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Please write an abstract with title: A Fully Automatic Calibration for Vision-Based Selective Compliance Assembly Robot Arm and Its Application to Intelligent Wafer Inspection Scheduling, and key words: Manipulators, Inspection, Calibration, Job shop scheduling, Robots, Service robots, Robot kinematics. Abstract: This study provides a complete Selective Compliance Assembly Robot Arm (SCARA) wafer inspection system. This system mainly includes two phases. In the first phase, a SCARA manipulator acts as an inspection application platform, and a depth camera is used to position the position vector of an inspection point and a cassette together with a single-axis visual frame so that SCARA can automatically perform calibration in the working area. In the second phase, the wafer ready for inspection is optimized for procedure sorting to perform all detection items in the shortest time when SCARA is in the process of inspection. This study has solved the problem of calibrating positions of a manipulator and a working area with consumption of manpower in a traditional wafer inspection field in such a way that the manipulator can complete a predetermined task with the economic benefits of the inspection center without colliding with the working area. In addition, optimized scheduling reduces the time for the manipulator to complete all inspection tasks to allow more wafers to be inspected per unit time. Finally, the relative positions of all inspection points are automatically calculated by the manipulator by placing SCARA in a field not calibrated by the inspection points. The predefined wafer inspection scheduling is sent to the system for optimization calculation, and the experimental results are presented by SCARA.
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1,101 |
Please write an abstract with title: Proceedings at the five hundred and twenty-ninth general meeting Held at Kelvin House, corner Marshall and Hollard Streets, Johannesburg, and key words: Films, Voting, Space vehicles, Saturn, Rockets, NASA, Motion pictures. Abstract: (President) was in the Chair and declared the meeting open at 8 p.m. There were present 240 members, visitors and the Secretary.
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1,102 |
Please write an abstract with title: Hardware acceleration for Processing Function Virtualization, and key words: Shape, Pipelines, Streaming media, Throughput, Data processing, Virtualization, Computer crime. Abstract: The 5G revolution will shape the telecommunication ecosystem providing high bandwidth and low latency. Moreover, the advent of Network Function Virtualizations (NFVs) will require higher network flexibility to move functions to the edge. Many NFVs are dedicated to data processing at the edge, thus they can be defined as Processing Function Virtualizations (PFVs) that may be accelerated exploiting programmable hardware. This paper proposes a Field Programmable Gate Array (FPGA) pipeline for multi-service chain, enabling dynamic deployment and hardware resources management. Results show the effectiveness of the approach since the pipeline latency remains constant with different input aggregated throughput.
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1,103 |
Please write an abstract with title: Wavelet leader based multifractal analysis, and key words: Wavelet analysis, Fractals, Discrete wavelet transforms, Wavelet coefficients, Chirp, Stochastic processes, Hydrodynamics, Data analysis, Mathematical model, Application software. Abstract: We introduce a new multifractal formalism based on wavelet leaders and study its properties. Comparing it against previously formulated wavelet coefficient based multifractal formalism, we show first that this wavelet leader based formalism allows the multifractal spectrum to be obtained over its entire range, and second that it does not cease to hold when applied to processes embodying unusual chirp-type (or oscillating) singularities (as opposed to the more common cusp-type ones). We illustrate these results and properties on four examples of multifractal deterministic functions or stochastic processes containing a graduation of the major difficulties. We show that this new multifractal formalism benefits from excellent theoretical and practical performance. Matlab routines implementing it are available upon request.
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1,104 |
Please write an abstract with title: Proceedings at two hundred and twenty-ninth monthly general meeting, and key words: Protective relaying, Business, Buildings, Presses, Micromechanical devices, Jacobian matrices, Gears. Abstract: The President: Gentlemen, the Minutes of the last monthly meeting have been circulated. Have I your permission to take them as read, and confirm them?— Agreed.
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1,105 |
Please write an abstract with title: A Fault-Tolerant Control System for Hexacopters with a Changeable Structure in Rotor Arrangement Angle, and key words: Fault tolerance, Mechatronics, Automation, Fault tolerant systems, Rotors, Control systems, Numerical simulation. Abstract: In this study, an airframe structure is proposed to be able to effectively utilize all remaining normal rotors even in the case of a single rotor failure by making the rotor arrangement angle of a hexacopter variable. Furthermore, position and attitude control is achieved by setting the control allocation problem under failure as a nonlinear optimization problem, while satisfying the rotor constraints such as a maximum thrust, etc. The effectiveness of the present method is demonstrated by using comparative numerical simulations with a normal hexacopter or a special structure possessing a tiltable rotor mechanism.
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1,106 |
Please write an abstract with title: Differential ring oscillators with multipath delay stages, and key words: Ring oscillators, Delay, Voltage-controlled oscillators, Fingers, Inverters, CMOS technology, Integrated circuit technology, Application specific integrated circuits, MOSFETs, Design methodology. Abstract: This work presents a differential ring oscillator architecture along with a design methodology that yields a compact, well-matched layout. A process independent attribute called the effective number of stages quantifies performance trade-offs in speed, jitter and power consumption. Design guidelines eliminate undesired modes of operation and guarantee robust differential oscillation. Theoretical predictions for four, five and six stage oscillators agree with measurements of CMOS 90nm and 0.13/spl mu/m implementations operating from 25 MHz to 6 GHz.
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1,107 |
Please write an abstract with title: Flexible Function Split Over Ethernet Enabling RAN Slicing, and key words: Radio frequency, IP networks, Automatic repeat request, Reliability, Ethernet, Throughput, Standards. Abstract: 5G network aims at providing an infrastructure that is flexible to support a wide range of services and applications and satisfy their communication needs. Several factors, such as very high data rate, ultra‐low latency, and high reliability, play a defining role in designing 5G infrastructure. Additionally, 5G network needs to be future proofing infrastructure, and hence it needs to be scalable to support new features over the next several years. In addition, it needs to beflexible to adapt to a wide range of different service requirements and needs to be open. Above all, 5G network needs to be cost‐effective for operators. In this context, Cloud‐radio access network (RAN) and RAN slicing are the key technology components for 5G by enabling isolation, cloudification, and softwarization of RAN functionalities. Cloud‐RAN is envisaged as a promising solution for wireless system to support the flexibility and high scalability of the network to keep up with traffic growth. Besides, RAN slicing has emerged as an efficient way to deploy diverse requirements for heterogeneous 5G services at the same time. RAN slicing aims at guaranteeing service experience requirements and maintaining performance. This could happen by slicing RAN and transport network resources.
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1,108 |
Please write an abstract with title: Design of a 6-bit 5.4-Gsamples/s CMOS D/A converter for DS-CDMA UWB transceivers, and key words: Multiaccess communication, Transceivers, Switches, Circuit topology, Low voltage, Clocks, CMOS technology, Dynamic range, Frequency conversion, Low pass filters. Abstract: This paper presents a design of a 6-bit 5.4-Gsamples/s D/A converter in IBM 0.13 /spl mu/m CMOS technology for DS-CDMA UWB transceivers. The high conversion rate and low supply voltage of 1.5 V make the design a challenge. To reduce the time constant of the circuit, we propose a two-stage current-steering topology, in which the distribution of the resistive and capacitive loads is balanced at the two stages. We also propose a folded-cascode current source cell that eliminates the need to control the crossing-points of the switch signals and minimizes the digital feedthrough. The current source cell does this without sacrificing headroom, so the circuit is suitable for a low supply voltage. Post-layout simulation has been performed to estimate performance. At the conversion rate of 5.4 Gsamples/s, the spurious free dynamic range (SFDR) is greater than 38 dB for three different signal frequencies. Both the integral nonlinearity (INL) and differential nonlinearity (DNL) stay within 0.3 LSB. The layout occupies a small active area of 110 /spl mu/m /spl times/ 90 /spl mu/m, and the D/A converter consumes only 20 mW of power.
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1,109 |
Please write an abstract with title: Exploiting Data Skew for Improved Query Performance, and key words: Indexes, Prefetching, Arrays, Hardware. Abstract: Analytic queries enable sophisticated large-scale data analysis within many commercial, scientific and medical domains today. Data skew is a ubiquitous feature of these real-world domains. In a retail database, some products are typically much more popular than others. In a text database, word frequencies follow a Zipf distribution with a small number of very common words, and a long tail of infrequent words. In a geographic database, some regions have much higher populations (and therefore data measurements) than others. Current systems do not make the most of caches for exploiting skew. In particular, a whole cache line may remain cache resident even though only a small part of the cache line corresponds to a popular data item. In this article, we propose a novel index structure for repositioning data items to concentrate popular items into the same cache lines. The net result is better spatial locality, and better utilization of limited cache resources. We develop a theoretical model for analyzing the cache utilization, and implement database operators that are efficient in the presence of skew. Our experimental evaluation on real and synthetic data shows that exploiting skew can significantly improve in-memory query performance. In some cases, our techniques can speed up queries by over an order of magnitude.
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1,110 |
Please write an abstract with title: Analytic model for a nonlaminated cylindrical magnetic actuator including eddy currents, and key words: Magnetic analysis, Actuators, Eddy currents, Magnetic flux, Performance analysis, Predictive models, Algorithm design and analysis, Analytical models, Frequency conversion, Solid modeling. Abstract: The eddy currents induced within a nonlaminated cylindrical magnetic actuator by a changing field have a fundamental influence on the actuator's performance. Understanding of these dynamics is essential in designing high-performance actuators and developing control algorithms for them. This paper presents an analytical approach to modeling the relationship between applied magnetomotive force and mechanical force. The approach is based on dividing the actuator into elements according to the flux distribution inside the actuator and finding the frequency-dependent reluctance of the flux paths of each element. An analytic model and its half-order simplification are derived, both of which are explicitly dependent on actuator material and geometric properties. Performance predictions from both analytic models are compared with finite-element analysis, demonstrating the accuracy of the models.
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1,111 |
Please write an abstract with title: Parallel optical interconnects over multimode waveguides, and key words: Optical waveguides, Optical interconnections, MIMO, Receiving antennas, Data communication, Transmitting antennas, Fading, Integrated circuit interconnections, Optical transmitters, Maximum likelihood detection. Abstract: This paper proposes a new multiple-input multiple-output (MIMO) modulation scheme applicable for optical interconnection systems. The method enables parallel transmission of multiple channels over a single multimode waveguide, thus avoiding cumbersome physical multichannel routing. In addition, the proposed method enables possible integration of the transmitter, transmission channel, and receiver using silicon technology, therefore facilitating direct interfacing with silicon circuitry.
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1,112 |
Please write an abstract with title: Simulation on the electromagnetic radiation of PCB, and key words: Electromagnetic radiation, Magnetic fields, Prototypes, Frequency, Switches, Electromagnetic compatibility, Design engineering, Educational institutions, Software prototyping, Magnetic analysis. Abstract: The article gives the electromagnetic radiation characteristics of the A/D converter. The A/D converter is a double integrating type. The PCB layout of the A/D converter is formed with the software layout plus in OrCAD. Two PCB arrangement prototypes of the A/D converter are studied. For each kind of device arrangement, the electromagnetic radiation characteristics are studied using special software Omega Plus for 4- or 2- layer PCB.
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1,113 |
Please write an abstract with title: RPL Authenticated Mode Evaluation: Authenticated Key Exchange and Network Behavioral, and key words: Authentication, Routing protocols, Software, Energy efficiency, Behavioral sciences, Internet of Things, Cryptography, Standards. Abstract: RPL (IPv6 Routing Protocol for Low-Power and Lossy Networks) is a standardized routing protocol that can organize thousands of resource constraint routers. Although it is an indispensable protocol with its energy-efficient, scalable, and autonomous structure, it is vulnerable to numerous attacks with its sensitive data and mechanisms. In this paper, we intensely analyzed the standard statements of the authenticated security mode of RPL and designed a comprehensive authenticated key establishment scheme extending the BKE (Bilateral Key Exchange). We formally verified our scheme using the Scyther tool. This study will help researchers contribute more to the authenticated security mode of RPL.
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1,114 |
Please write an abstract with title: Multi-Modal Depth Estimation Using Convolutional Neural Networks, and key words: Estimation, Cameras, Radar, Radar imaging, Laser radar, Feature extraction, Task analysis. Abstract: This paper addresses the problem of dense depth predictions from sparse distance sensor data and a single camera image on challenging weather conditions. This work explores the significance of different sensor modalities such as camera, Radar, and Lidar for estimating depth by applying Deep Learning approaches. Although Lidar has higher depth-sensing abilities than Radar and has been integrated with camera images in lots of previous works, depth estimation using CNN's on the fusion of robust Radar distance data and camera images has not been explored much. In this work, a deep regression network is proposed utilizing a transfer learning approach consisting of an encoder where a high performing pre-trained model has been used to initialize it for extracting dense features and a decoder for upsampling and predicting desired depth. The results are demonstrated on Nuscenes, KITTI, and a Synthetic dataset which was created using the CARLA simulator. Also, top-view zoom-camera images captured from the crane on a construction site are evaluated to estimate the distance of the crane boom carrying heavy loads from the ground to show the usability in safety-critical applications.
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1,115 |
Please write an abstract with title: A Taxonomy for Distributed Ledger Analytics, and key words: Distributed ledger, Taxonomy, Smart contracts, Blockchains. Abstract: Over the past decade, blockchains and distributed ledger technologies have rapidly evolved. With increasing transaction volumes and the proliferation of decentralized applications based on smart contracts, a need for a deeper understanding arises. We structure the field that we term distributed ledger analytics.
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1,116 |
Please write an abstract with title: Smart Tool for Tracing Humidity and Temperature of Products During Transportation, and key words: Temperature distribution, Regulators, Supply chains, Transportation, Humidity, Production, Temperature control. Abstract: This article discusses the ability to trace products with humidity and temperature requirements to the end user. Sometimes the supply chain includes up to 7 sub-distributors, it is very important to track temperature and humidity from manufacturer to end client. In accordance with ISO 13485, traceability should be included to QMS. This application track geolocation and add sub distributors in process of transportation. Loggers including WIFI for transfer data in timely manner. Moreover, it is fully integrated with the system for dealing with nonconformance, which allows to automate the process of opening nonconformance and reduce the costs of damage products. If during transportation humidity or temperature range will be higher or lower that required, system automatically open nonconformance and assign to correct person. Smart Tool for tracing transportation of humidity and temperature control product can improve QMS logistic process.
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1,117 |
Please write an abstract with title: Recalling Direct 2D-3D Matches for Large-Scale Visual Localization, and key words: Location awareness, Visualization, Vocabulary, Solid modeling, Quantization (signal), Three-dimensional displays, Pipelines. Abstract: Estimating the 6-DoF camera pose of an image with respect to a 3D scene model, known as visual localization, is a fundamental problem in many computer vision and robotics tasks. Among various visual localization methods, the direct 2D-3D matching method has become the preferred method for many practical applications due to its computational efficiency. When using direct 2D-3D matching methods in large-scale scenes, a vocabulary tree can be used to accelerate the matching process, which will also induce the quantization artifacts leading to reduce the inlier ratio and decrease the localization accuracy. To this end, in this paper two simple and effective mechanisms, called visibility-based recalling and space-based recalling, are proposed to recover lost matches caused by the quantization artifacts, thus can largely improve the localization accuracy and success rate without increasing too much computational time. Experimental results on long-term visual localization benchmarks demonstrate the effectiveness of our method compared with state-of-the-arts.
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1,118 |
Please write an abstract with title: Tactics for the Precision Marketing on the Background of the Big Data, and key words: Customer services, Conferences, Buildings, Production, Big Data, Market research, Manufacturing. Abstract: The extensive application of the big data in the field of the business world has made a tremendous change in the marketing practice. All kinds of the marketing activities have been becoming more personified, diversified and precise. The precision marketing is a typical one. How does the enterprise make a full use of the precision marketing under the big data to serve its whole operational activity is worthy to be discussed. So, the paper first expounds the roles of the big data on the marketing by way of the document research. Then it analyzes the changing trend of the marketing under the big data and finally puts forward some tactics when the enterprise is engaged in the precision marketing under the big data such as building the platforms for the precision marketing, precise marketing positioning and setting up a perfect customer service system and so on.
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1,119 |
Please write an abstract with title: Sharingchain : A privacy protection scheme based on blockchain in the supply chain, and key words: Privacy, Protocols, Conferences, Supply chains, Blockchain, Permission, Data structures. Abstract: With the development of the supply chain, information-sharing has received great attention recently. At the same time, partners in the supply chain improve efficiency through information sharing, but private information needs to be protected. We propose a supply chain data sharing scheme based on Quorum blockchain, namely Sharingchain. Distribute keys through private transactions to achieve access control to private information. Access rights can be revoked or authorized through key management. In addition, a public transaction data structure is designed to transmit encrypted data. Security analysis and performance analysis show that the proposed scheme is suitable for the on-demand disclosure of private data in the supply chain. Compared with the Quorum scheme, our scheme greatly reduces the communication cost of data in the interactive protocol.
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1,120 |
Please write an abstract with title: Investigation of ultrawideband pulses in wideband helix traveling wave tubes, and key words: Ultra wideband technology, Voltage, Predictive models, Pulse shaping methods, Power generation, Electron tubes, Pulse amplifiers, Nonlinear distortion, Frequency domain analysis, Signal resolution. Abstract: The paper deals about the investigations of transient TWT excitation. The numerical simulations are largely based on a 1D time-domain model, as well as the frequency domain code LATTE. The time domain code models the particles, including space charge, using the particle-in-cell method. Fields are calculated using the pseudo-spectral time-domain method with a modification to incorporate helix waveguide dispersion effects and attenuation into a 1D model. Both models have been validated against experimental measurements on the XWING TWT.
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1,121 |
Please write an abstract with title: Low cost distributed computer control systems, and key words: Protocols, Real-time systems, Digital control, Hardware, Optical fiber cables, Topology, Software. Abstract: This paper discusses the need for low cost Distributed Computer Control Systems (DCCS) in small to moderately sized distributed control applications. Various factors are considered that mitigate in favour of simple, dedicated, control networks as opposed to the expensive, general purpose Local Area Networks that are starting to appear commercially. An example case study is described which shows how a simple DCCS can be effectively implemented.
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1,122 |
Please write an abstract with title: Mechanical Analysis of Human DBS Electrodes, and key words: Electrodes, Performance evaluation, Fabrication, Satellite broadcasting, Polyimides, Nickel, Finite element analysis. Abstract: Deep brain stimulation (DBS) electrodes have been proved to be effective in treating neural related diseases in rodents. These devices were successfully extended to the field of human neuro therapy. Many different electrodes exist. However, no quantitative ranking criterion is available to allow meaningful comparison of the various DBS electrodes to aid the designer. This paper presents a novel Figure of Merit (FOM) dedicated to DBS electrodes. The proposed optimization performance takes into account safety factors of mechanical analysis and the estimated fabrication cost of some materials. The FOM is used to rank several DBS electrode designs. Finite Element Models (FEM) analysis for several electrode layouts are conducted. FEM shows the effects of different design parameters on the electrode mechanical performance. These parameters include electrode dimensions, geometry, and materials. The electrodes mechanical analysis is evaluated from different points of view including: linear buckling analysis, stationary analysis with axial and shear loading. The safety factors are calculated for several designs with different materials (brittle and ductile materials). The results obtained from FEM mechanical analysis for the various electrodes prototypes are presented, which provide guidelines for different electrode designs and material choice. A proposed fabrication process along with an estimated fabrication cost is also introduced.
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1,123 |
Please write an abstract with title: Segmentation of extracellular microelectrode recordings with equal power, and key words: Extracellular, Microelectrodes, Neurosurgery, Parkinson's disease, Magnetic resonance imaging, Signal analysis, Surgery, Signal processing algorithms, Workstations, Image resolution. Abstract: We describe a segmentation algorithm for extracellular microelectrode recordings identifying segments with equal power. The observed temporal correlation of the microelectrode data was accounted for by estimating the variance of the autocovariance of the segments. The iterative method of comparing segments and determining abrupt changes in the power was validated on synthetic signals and microelectrode recording data acquired at different neuronal structures along the stereotactic trajectory in patients with Parkinson disease.
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1,124 |
Please write an abstract with title: Dynamic and static tomographic renal coincidence imaging with a gamma camera using Rb-82: a feasibility study, and key words: Optical imaging, Cameras, Positron emission tomography, Heart, Lungs, Biomedical imaging, Nuclear medicine, Image resolution, Imaging phantoms, In vivo. Abstract: Rb-82, a positron emitter, with a half-life of /spl sim/75 sec, is a promising radionuclide which can potentially turn the concept of sequential dynamic tomographic renal imaging into reality. The aim of this work was to study the feasibility of tomographic renal imaging using a hybrid SPECT/PET system. To realize this goal 1) resolution of Rb-82 was measured using the Deluxe ECT phantom with solid spheres (0.95 cm to 3.18 cm in diameter) and was compared with Tc-99m, 2) in vivo resolution was measured in the kidneys, 3) dynamic tomographic renal imaging was performed using a single 3 mCi Rb-82 bolus and limited angle tomography, and 4) static tomographic renal imaging was performed using multiple boluses in combination with either single or multiple step acquisitions, stopping the acquisition during the bolus injection. Renal acquisitions were done using New Zeeland White Rabbits weighting between 4 and 7 kg.
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1,125 |
Please write an abstract with title: Low-power implementation of polyphase filters in Quadratic Residue Number system, and key words: Filter bank, Dynamic range, Finite impulse response filter, Power dissipation, Satellite broadcasting, Timing, Frequency, Energy consumption, Digital video broadcasting, Channel bank filters. Abstract: The aim of this work is the reduction of the power dissipated in digital filters, while maintaining the timing unchanged. A polyphase filter bank in the Quadratic Residue Number System (QRNS) has been implemented and then compared, in terms of performance, area, and power dissipation to the implementation of a polyphase filter bank in the traditional two's complement system (TCS). The resulting implementations, designed to have the same clock rates, show that the QRNS filter is smaller and consumes less power than the TCS one.
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1,126 |
Please write an abstract with title: Priority assignment optimization for minimization of current surge in high performance power efficient clock-gated microprocessor, and key words: Surges, Clocks, Microprocessors, Power supplies, Noise reduction, Circuit noise, Voltage, Capacitance, Degradation, Frequency. Abstract: We propose an integrated archltectural/physicdplanning approach named priority assignment optimization to mioimize the current surge in high performance power eifkient clock-gated microprocessors. The proposed approach balances the current demands across the floorplan by assigning optimized priorities to the functional unlts (FUs). Two complementary methods - physical planning with soft modules and h o e pattern management - to enhance our proposed approach are also dlscussed for various applications. Experimental results show that the proposed approach reduces the peak noise by 11.75% and consequently, the decoupllng capacitance (Decap) requirement by 24.22% without any degradation in IPC (Instruction Per Cycle). We also show that our approach does not Increase the clock period for the 0.18pm technology and beyond.
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1,127 |
Please write an abstract with title: In-situ etched buried heterostructures for uncooled and extended reach modulated lasers, and key words: Inductors, Bit error rate, Diode lasers, Quantum well devices, MOCVD, Electrons, Dry etching, Power lasers, Temperature dependence, Extinction ratio. Abstract: We report on in-situ etched and regrown buried heterostructure devices. Excellent surface morphology and reduction in surface damage lead to a 20% decrease in threshold current and 50% reduced burn-in degradation rates compared with standard processed devices.
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1,128 |
Please write an abstract with title: <tex>$H\infty$</tex> Delay-independent stabilization for Takagi Sugeno fuzzy system based on Saturated Output Control, and key words: Fuzzy systems, Actuators, Symmetric matrices, Closed loop systems, Redundancy, Delay effects, PD control. Abstract: This paper is focused on non-quadratic SOF control for delayed Takagi Sugeno (T-S) models with input saturation and external disturbances. A polytopic representation is first used to describe the input nonlinearity. By using a descriptor redundancy approach, an augmented form of the closed-loop system is established. Then, in order to reduce the conservatism of the quadratic approach, a poly-quadratic function and a Lyapunov-Krasovskii function (LKF) are used to derive H∞ stabilization conditions. The design conditions are formulated and resolved in LMIs terms. A simulation example is made to show the successful of the proposed method.
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1,129 |
Please write an abstract with title: A Deep Convolutional Neural Network for Classification of <i>Aedes Albopictus</i> Mosquitoes, and key words: Diseases, Tools, Visualization, Task analysis, Deep learning, Convolutional neural networks, Smart phones. Abstract: Monitoring the spread of disease-carrying mosquitoes is a first and necessary step to control severe diseases such as dengue, chikungunya, Zika or yellow fever. Previous citizen science projects have been able to obtain large image datasets with linked geo-tracking information. As the number of international collaborators grows, the manual annotation by expert entomologists of the large amount of data gathered by these users becomes too time demanding and unscalable, posing a strong need for automated classification of mosquito species from images. We introduce the application of two Deep Convolutional Neural Networks in a comparative study to automate this classification task. We use the transfer learning principle to train two state-of-the-art architectures on the data provided by the Mosquito Alert project, obtaining testing accuracy of 94%. In addition, we applied explainable models based on the Grad-CAM algorithm to visualise the most discriminant regions of the classified images, which coincide with the white band stripes located at the legs, abdomen, and thorax of mosquitoes of the Aedes albopictus species. The model allows us to further analyse the classification errors. Visual Grad-CAM models show that they are linked to poor acquisition conditions and strong image occlusions.
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1,130 |
Please write an abstract with title: Wide bandwidth printed circuit imaging antenna arrays, and key words: Bandwidth, Printed circuits, Antenna arrays, Dipole antennas, Radio frequency, Millimeter wave circuits, Plasma applications, Coupling circuits, Impedance matching, Schottky diodes. Abstract: Wide RF bandwidth millimeter-wave antenna arrays are under development for plasma imaging applications. These quasi-optically coupled pumped arrays employ dual dipole antennas and wide IF bandwidth (1-10 GHz) baluns fabricated on low loss printed circuit boards, with biased surface mount Schottky diodes arranged in fundamental and subharmonic mixer form.
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1,131 |
Please write an abstract with title: Development of Implicit Representation Method for Freehand 3D Ultrasound Image Reconstruction of Carotid Vessel, and key words: Image segmentation, Surface reconstruction, Three-dimensional displays, Ultrasonic imaging, Semantics, Lumen, Reconstruction algorithms. Abstract: The objective of this study is to develop a novel 3D ultrasound reconstruction algorithm based on deep learning method, which can reduce the artifacts of 3D volume of carotid artery. The method implicitly inferred and represented the intensity and semantic probability of the voxel in the image volume using a multi-layer perceptron (MLP) network. Fifteen datasets were collected on the carotid atherosclerosis (CA) and healthy subjects in clinic and reconstructed to 3D volume after vessel segmentation. The discontinuity and distortion were defined to evaluate the artifact of the images volume, and the variation of overall curvature was calculated to evaluate the smoothness of the reconstructed vessel wall. The results showed our method outperformed traditional methods by reducing 34.79% distortion and 61.61 % discontinuity and yielding more than 60% improved cases. It demonstrated that our method has the potential of providing smoother and more continuous image volume comparing with the conventional reconstruction method.
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1,132 |
Please write an abstract with title: Pricing of Learning Objects in a Workflow-Based E-Learning Scenario, and key words: Pricing, Electronic learning, Informatics, XML, Videos, Packaging, Data models, Information systems, Standards development, Assembly systems. Abstract: Standards in e-learning have been developed to support authoring, assembly, and execution of learning objects. Nevertheless, pricing of learning objects still plays a minor role in current e-learning research. So far, standards for learning objects lack concepts for the integration of prices. In this paper, we present an approach to support pricing of e-learning objects on different abstraction levels. The approach is based on combining price models and learning objects by extending the learning objects' XML metadata on the one hand and on the representation of processes as exchanges and manipulations of XML documents on the other hand. Consideration of price models in a workflow-based learning-object management system thus allows for explicitly modeling processes for pricing such as price negotiations between learners and learning object providers or mediators. Moreover, pricing processes can be integrated into learning, teaching, and administration processes and thereby enhance the cooperation of all participating actors.
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1,133 |
Please write an abstract with title: DNA Diagnosis in Case Series of Hereditary Retinal Dystrophy, and key words: Bioinformatics, Genomics, Diseases, Proteins, Filtering algorithms, Lead, Medical diagnostic imaging. Abstract: Retinal dystrophy is highly heterogeneous, "frequent among rare" inherited eye pathology which results in blindness. Though some common forms of retinal dystrophy are associated with well-known and years ago established genes, hundreds of others are found and kept being revealed to be involved in its pathogenesis. In this study for genetic testing, a whole-exome sequencing by next-generation sequencing (NGS) was implied, which included bioinformatic analysis using open algorithms and recommendations on filtering. We reported 6 solved using NGS cases of hereditary retinitis pigmentosa associated with pathogenic variants in the genes PRPF31, IFT140, RGS9, RPGR, RP1.
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1,134 |
Please write an abstract with title: Gait Planning of Quadruped Walking and Climbing Robot for Locomotion in 3D Environment, and key words: Legged locomotion, Climbing robots, Foot, Service robots, Chemical industry, Shape, Robotics and automation, Leg, Lab-on-a-chip, Mechanical engineering. Abstract: One of the traditional problems in the walking and climbing robot moving in the 3D environment is how to negotiate the boundary of two plain surfaces such as corners, which may be convex or concave. In this paper a practical gait planning algorithm in the transition region of the boundary is proposed in terms of a geometrical view. The trajectory of the body is derived from the geometrical analysis of the relationship between the robot and the environment. And the position of each foot is determined by using parameters associated with the hip and the ankle of the robot. In each case of concave or convex boundaries, the trajectory that the robot moves along is determined in advance and the foot positions of the robot associated with the trajectory are computed, accordingly. The usefulness of the proposed method is confirmed through simulations and demonstrations with a walking and climbing robot.
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1,135 |
Please write an abstract with title: Demand-Side Management of Self-Sustained Droop Based Standalone Microgrid Using Conservation Voltage Reduction Strategy, and key words: Voltage control, Voltage, Load shedding, Inverters, Reactive power, Tap changers, Reliability. Abstract: Self-sustained microgrid (MG) carries the potential to replicate a conventional grid network with a smooth and robust control scheme to generate and disseminate power with the integration of diverse renewable sources by employing the voltage source inverter (VSI). The power generation capability is the primary function of VSI in an inverter-based distributed generation (DG). In addition, it is also operated to perform the task of demand-side management with the utilization of the conservation voltage reduction (CVR) strategy. In a conventional distribution network, the CVR strategy is exploited by voltage deduction within permissible range with the support of open-loop schemes, such as tap changers, capacitors, or close-loop schemes, such as supervisory control and data acquisition system. However, the CVR's applicability in a standalone MG is still a viable approach to be delved into and hence, this article intends to employ CVR by utilizing the conventional P-f droop and V-I droop principle in inverter-based DG. The proposed strategy produces voltage compensation according to the degree of voltage or frequency variation and therefore, the degree of voltage reduction is not fixed but it varies with the disturbance. The proposed control mechanism relies on the deviation of the voltage generated by the V-I droop and frequency output provided by the P-f droop during the overloading and peak demand condition. In addition to it, a control methodology is devised to check the coordination between CVR and load shedding strategy to shed load during overloading conditions. The performance testing of the proposed control methodology is being validated through real-time Opal-RT device.
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1,136 |
Please write an abstract with title: Depth-CUPRL: Depth-Imaged Contrastive Unsupervised Prioritized Representations in Reinforcement Learning for Mapless Navigation of Unmanned Aerial Vehicles, and key words: Video games, Laser theory, Navigation, Measurement by laser beam, Imaging, Reinforcement learning, Autonomous aerial vehicles. Abstract: Reinforcement Learning (RL) has presented an impressive performance in video games through raw pixel imaging and continuous control tasks. However, RL performs poorly with high-dimensional observations such as raw pixel images. It is generally accepted that physical state-based RL policies such as laser sensor measurements give a more sample-efficient result than learning by pixels. This work presents a new approach that extracts information from a depth map estimation to teach an RL agent to perform the mapless navigation of Unmanned Aerial Vehicle (UAV). We propose the Depth-Imaged Contrastive Unsupervised Prioritized Representations in Reinforcement Learning (Depth-CUPRL) that estimates the depth of images with a prioritized replay memory. We used a combination of RL and Contrastive Learning to lead with the problem of RL based on images. From the analysis of the results with Unmanned Aerial Vehicles (UAVs), it is possible to conclude that our Depth-CUPRL approach is effective for the decision-making and outperforms state-of-the-art pixel-based approaches in the mapless navigation capability.
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1,137 |
Please write an abstract with title: Mooring Lightweight Wave Buoys – A Flexible Design Approach for a Wide Range of Coastal Conditions, and key words: Sea surface, Surface waves, Sensitivity analysis, Sea measurements, Buoyancy, Minimization, Size measurement. Abstract: In recent years, a second generation of wave buoys have been developed that are lightweight, cost-effective and hand deployable, such as the SOFAR Spotter Buoy and the Datawell Directional Waverider DWR-G4. Originally designed as drifting buoys, their size and price compared to traditional wave measurement buoys has led both academic researchers and commercial operators to investigate using them in a moored configuration. This presents many challenges to the mooring engineer as the typical mooring designs used in coastal applications, such as chain catenary moorings or elastomeric taut moorings, are unsuitable for buoys with limited reserve buoyancy such as these.This work aimed to derive a scalable mooring configuration that would allow non-skilled operators to simply and effectively configure a mooring for the SOFAR Spotter Wave Buoy that was simple to build and deploy.Several S-tether mooring configurations were evaluated for dynamic stability, minimization of load deviation on the wave buoy and minimization of anchor load for design environmental conditions, using dynamic analysis in WHOI Cable. These configurations were then tested for robustness and ability to be utilized for a wide array of environmental conditions.A parametric design solution for an S-tether mooring with subsurface flotation was subsequently developed for the SOFAR Spotter Wave Buoy. The S-tether design reduces entanglement risks seen in other proposed mooring configurations.A simple and effective mooring configuration is considered essential for mooring lightweight, cost-effective wave buoys easily and reliably. The design approach was validated through sensitivity analyses and is recommended for similar low-buoyancy surface expressions in shallow waters. This flexible design configuration will enable a larger take up of these wave buoys and provide end users with increased data coverage.
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1,138 |
Please write an abstract with title: Nearly ideal Stoner-Wohlfarth behaviour of coprecipitated barium ferrite powder with reduced packing density, and key words: Barium, Ferrites, Powders, Magnetic hysteresis, Magnetic resonance, Electromagnetic wave absorption, Coercive force, Assembly, Resonant frequency, Density measurement. Abstract: The influence of magnetic interaction on the hysteresis of random assemblies of coprecipitated barium ferrite powders is investigated. For this purpose magnetically diluted samples are prepared by a new preparation method by which particle agglomerations are largely avoided. The static hysteresis properties and the hysteresis of microwave absorption below the natural ferromagnetic resonance frequency are measured as a function of the volumetric packing density p. A substantial increase of the coercivity up to values just below the theoretical coercivity predicted by the Stoner-Wohlfarth model is observed with decreasing ferrite fraction. The hysteresis of microwave absorption shows a significant dependence on p, too. A comparison between measured and calculated absorption curves indicates that the magnetization process of coprecipitated barium ferrite powder corresponds nearly perfectly with the Stoner-Wohl-farth model.
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1,139 |
Please write an abstract with title: WRHMCC: a new congestion control mechanism for multicast applications, and key words: Telecommunication congestion control, Telecommunication control, Scalability, Feeds, Throughput, Analytical models, Laboratories, Telecommunication computing, Internet, Research and development. Abstract: Congestion control for large multicast groups has been a challenging issue for widespread deployment of multicast services. Single-rate multicast congestion control schemes address both TCP-friendly and scalability issues with low complexity. However, they do not solve the well-known "drop-to-zero" problem, i.e., to prevent a slow receiver from slowing down faster receivers in the same multicast group. For this purpose, we propose a new single-rate multicast congestion control mechanism for heterogeneous receivers which helps each multicast receiver to receive at its desired rate. The basic idea is as follows. Each multicast receiver maintains and adjusts a window at itself just like what TCP source does. They calculate a desirable receive rate with this window and the RTT to the source and feed back this rate to the source and intermediate routers. The sender tunes its rate according to the fastest receiver in the group. Each multicast router does not copy each incoming multicast packet to all egress links in the multicast tree unconditionally but copy packet to egress links according to the rate information obtained from the downstream receivers. 'Good' egress links receive more packets while 'bad' egress links receive less packets. The proposed strategy is shown to be still TCP-friendly and scalable while eliminating the "drop-to-zero" problem.
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1,140 |
Please write an abstract with title: Photo-nanoimprinting using SOFT (sample on flexible thruster) stage, and key words: Polymer films, Hydraulic actuators, Apertures, Pressure control, Force control, Thickness measurement, Equalizers, Position measurement. Abstract: In the photo-nanoimprinting, the base layer thickness decreases with imprint pressure and imprint time; however, the decreasing speed becomes very slow when the polymer thickness is below several hundred nm. The simple idea for resulting in thin base layer is supplying enough small amount of polymer (i.e., small droplet(s) or thin film). In the droplets system, a mold is soaked with the polymer by capillary action. The soaking action results air evacuation and the soaking time limits the process speed as presented in Chen et al. (2004). In the thin film system, no soaking time is required but it is quite difficult to bring a mold in full contact with the polymer so as not to catch air since the surfaces of the mold and the polymer are uneven. To solve the problem, we developed a novel sample stage, which equips wafer warp function, compatible to such a thin initial polymer thickness.
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1,141 |
Please write an abstract with title: Fast discrete chirp Fourier transforms for radar signal detection systems using cluster computer implementations, and key words: Fourier transforms, Signal detection, Signal processing, Time frequency analysis, Radar imaging, Radar signal processing, Radar applications, Frequency estimation, Chirp modulation, Computer applications. Abstract: A useful processing tool for time-frequency signals known as the discrete chirp Fourier transform (DCFT) and its implementation using cluster computers for application to radar signal analysis. a time-frequency signal is defined as a signal whose spectral distribution changes with time. chirp signals, as time-frequency signals which are linearly frequency modulated, are widely used in many detection, estimation, and imaging radar applications. DCFT implementations for radar systems provide important information about the nature of radar signals and allow to determine certain spectral characteristics used in signal detection and estimation processes.
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1,142 |
Please write an abstract with title: Smart Agri-Farming on Satellite Imageries using Machine Learning, and key words: Earth, Training, Satellites, Soil, Sensors, Springs, Random forests. Abstract: This study aims to help farmers by using open source software that employs machine learning and hyperspectral images to analyze farm characteristics, which include crops, soil, and climate. This study makes use of two datasets, i.e., 270100 images from LANDSAT 8 and classified images from MODIS dataset provided by Google Earth Engine to classify land type, which helps in detecting farms in the future. Random forest algorithm was used as a classifier for multiclass hyperspectral data. Training the model acquired an overall accuracy of 0.997 that helped to determine the type of land in a geographical area. This paper conveys the first model built by us from various other models that are planned to develop. The data from our research work is conveyed to a farmer by means of a web application, which is built using a Spring framework, Grafana, JvaScript, and several other web technologies.
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1,143 |
Please write an abstract with title: A 13.3Mb/s 0.35/spl mu/m CMOS analog turbo decoder IC with a configurable interleaver, and key words: Analog integrated circuits, CMOS analog integrated circuits, CMOS integrated circuits, Iterative decoding, Digital video broadcasting, Energy consumption, Transconductors, Voltage, Capacitors, Feedback loop. Abstract: A 0.35/spl mu/m CMOS analog decoder for a 4-state, rate 1/3, block length 16 turbo code operates at 13.3Mb/s and latency of 1.2/spl mu/s and consumes 13.9nJ per decoded bit with a 3.3V supply. The 1.42mm/sup 2/ core IC implements two logarithmic domain MAP decoders and a fully programmable analog interleaver that is configured at power-up.
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1,144 |
Please write an abstract with title: Intelligent control of pneumatic actuator using LVQNN, and key words: Intelligent control, Pneumatic actuators, Pulse width modulation, Valves, State feedback, Space vector pulse width modulation, Solenoids, Servomechanisms, Velocity control, Acceleration. Abstract: The development of a fast, accurate, and inexpensive position-controlled pneumatic actuator that may be applied to a variety of practical positioning applications with various external loads is described in this paper. A novel modified pulse width modulation (PWM) valve pulsing algorithm allows on/off solenoid valves to be used in place of costly servo valves. A state feedback controller with position, velocity and acceleration feedback is successfully implemented. Switching algorithm of control parameter using learning vector quantization neural network (LVQNN) is newly proposed, which estimates the external loads of the pneumatic actuator. The effectiveness of the proposed control algorithms are demonstrated through experiments with various loads.
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1,145 |
Please write an abstract with title: QoS characteristics of video stream delivery and assure, and key words: Streaming media, Bandwidth, Decoding, Video compression, Control systems, Electronic mail, Encoding, Research and development, Internet, IP networks. Abstract: Quality assurance of delivery information on the network can be divided into spatial quality and temporal quality. In this paper, we discuss QoS characteristics of video stream delivery, and analyze the effects for the video quality about spatial quality and temporal quality, in order to provide a reference for QoS policies of network to delivery video stream.
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1,146 |
Please write an abstract with title: Adoption of Mobile Technology in Teaching Moral Values to Children: A Study in Malaysia, and key words: Ethics, Electric potential, Engineering profession, Education, Computer bugs, Buildings, Aging. Abstract: In today's modern society, many parents are busy building a successful career and it is very common that there are many young families with both parents working. Hence, the young children of such families will be placed in day-care centres or they are looked after by their grandparents and maids. Working parents would not be spending much quality time with their children and providing them with moral guidance. This group of children, if not given adequate and proper guidance, would not know much about good moral values. There are also children who grow up around people who do not practise good moral values and commit all types of wrongdoings such as cheating, stealing, bullying, being selfish, greedy, uncaring and ill-treating animals. It is easy for children to be influenced by such actions and behaviours. Therefore, this research plans to assist in imparting moral values to children by using the concept of “edutainment” with the use of a mobile application. Based on the results collected in this research, the application is fully functional without any bugs because all the respondents who took part in the testing of the application were able to launch the application on their mobile phones successfully. The results also show that the mobile application is well received by both parents and the children and it has been effective in helping children aged 4 to 9 to have a better understanding of moral values.
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1,147 |
Please write an abstract with title: Visual control of a robotic hand, and key words: Robot control, Humans, Control systems, Deformable models, Robot kinematics, Robustness, Anthropomorphism, Image edge detection, Feedback, System testing. Abstract: The paper deals with the design and implementation of a visual control of a robotic system composed of a dexterous hand and stereo cameras. The aim of the proposed system is to reproduce the movements of a human hand in order to learn complex manipulation tasks. A novelty algorithm for a robust and fast fingertips localization and tracking is presented. Moreover, a simulator is integrated in the system to give useful feedbacks to the users during operations, and provide robust testing framework for real experiments.
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1,148 |
Please write an abstract with title: Linear structures following by an airship using vanishing point and horizon line in a visual servoing scheme, and key words: Visual servoing, Roads, Vehicle dynamics, Robot kinematics, Cameras, Motion control, Earth, Layout, Optimal control, Helicopters. Abstract: In the present paper, an image-based visual servoing scheme is presented for a road following task with an autonomous airship. A new set of visual signals is introduced, namely with the vanishing point coordinates and the vanishing line parameters, which have the advantage of decoupling the rotation DOF and respecting the natural characteristics of the vehicle dynamics. An optimal control design is used for a first implementation of the approach with the simulation platform of the AURORA airship. Simulation results are presented and discussed demonstrating a fair performance even in realistic wind conditions.
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1,149 |
Please write an abstract with title: Classifying Quality Grading and Size of Allium Cepa Using Digital Image Processing Algorithms, and key words: Conferences, Manuals, Handheld computers, Standards, Software, Signal processing, Measurement. Abstract: This study introduced the system that can classify the size, color, and texture of the onion based on Philippine National Standard (PNS) using image processing methods such as Gaussian Blur, Canny Edge, Erosion, Dilation, Contouring, Color Masking, Pixel per metric ratio, RGB, and Blob. The Blob algorithm can detect the texture of the onion according to its grade; Grade A(Grade 1), Grade B (Grade 2), Grade C (Combination of Grade 1 and Grade 2), and Reject. The researcher conducted series of experimental testing to compare the quality grading using manual and automatic classification of bulb onion. The statistical method used for this study is T-test to compare the manual sorting and automated sorting. The t-values for red onion based on local standards is 0.1284, while the yellow onion is 0.0178. The results are less than the critical value of 2.01. It means that the null hypothesis is accepted. Over all, the system can determine the size, color, and texture bulbs of onion using image algorithms.
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1,150 |
Please write an abstract with title: Stiffness-Optimized Ankle-Foot Orthoses Improve Walking Energy Cost Compared to Conventional Orthoses in Neuromuscular Disorders: A Prospective Uncontrolled Intervention Study, and key words: Legged locomotion, Biomechanics, Electronic mail, Neuromuscular, Atmospheric measurements, Particle measurements. Abstract: In persons with calf muscle weakness, walking energy cost is commonly increased due to persistent knee flexion and a diminished push-off. Provided ankle-foot orthoses (AFOs) usually lower walking energy cost. To maximize the reduction in energy cost, AFO bending stiffness should be individually optimized, but this is not common practice. Therefore, we aimed to evaluate whether individually stiffness-optimized AFOs reduce walking energy cost compared to conventional AFOs in persons with non-spastic calf muscle weakness and, secondarily, whether stiffness-optimized AFOs improve walking speed and gait biomechanics. Thirty-seven persons with non-spastic calf muscle weakness using a conventional AFO were included. Participants were provided a new, individually stiffness-optimized AFO. Walking energy cost, speed and gait biomechanics were assessed, at delivery and 3-months follow-up. Stiffness-optimized AFOs reduced walking energy cost with 9.2% (-0.42J/kg/m, 95%CI: 0.26 to 0.57) compared to the conventional AFOs while walking speed increased with 5.2% (+0.05m/s, 95%CI: 0.03 to 0.08). In bilateral affected persons the effects were larger compared to unilateral affected persons (difference effect energy cost: 0.31J/kg/m, speed: +0.09m/s). Although individually gait biomechanics changed considerably, no significant group differences were found (p > 0.118). We demonstrated that individually stiffness-optimized AFOs considerably and meaningfully reduced walking energy cost compared to conventional AFOs, which was accompanied by an increase in walking speed. Especially in bilateral affected persons large effects of stiffness-optimization were found. The individual differences in gait changes substantiate the recommendation that the AFO bending stiffness should be individually tuned to minimize walking energy cost.
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1,151 |
Please write an abstract with title: Architecture for Garbage Monitoring System using Integrated Technologies with Short Literature Survey, and key words: Radiofrequency identification, Cameras, Ground penetrating radar, Real-time systems, Waste management, Databases, Servers. Abstract: The innovations given by rapid development of science and technology may bless the society in handling environmental issues efficiently. The main driving force behind environmental issues is population growth. As the population is increasing, the management of waste is becoming a difficult and challenging task for the concerned authorities. The utilization and deployment of advanced technologies namely Internet of Things, Cloud Computing and Image processing may aid the authorities to timely manage the garbage and keep the environment clean. In time management of waste will help the society to meet the alarming situations like inhaling of toxic gases and various health diseases. This paper discusses the state-of-art technologies that have been employed in literature for waste management. Also, the authors proposed a novel architecture for waste management that utilizes the concept of IoT and image processing. The proposed architecture acts as a surveillance system to monitor the overflow of the garbage and delivers a message to the concerned authorities to take the necessary and immediate action.
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1,152 |
Please write an abstract with title: A 4 GS/s 3-bit Highly Linear Time-Based Analog- to-Digital Converter for Massive MIMO Systems, and key words: Wireless communication, Power demand, Quantization (signal), Linearity, Voltage, Receivers, Massive MIMO. Abstract: Recent studies on modern wireless communication systems are focusing on Massive Multiple- Input Multiple-Output (MIMO) technology for its high potential. MIMO systems require high resolution Analog-to- Digital Converters (ADCs) in the Base Stations (BS) to reduce quantization noise. However, using high resolution ADCs causes higher power consumption at the BS and the hardware costs increase. Reducing the resolution of the ADCs at the BS causes severe non-linearity errors due to additional quantization noise. In other words, MIMO systems cannot achieve high performance without highly linear and low resolution ADCs. In this paper, a 3-bit highly linear Time- based ADC (T-ADC) is presented. The proposed circuit exhibits high linearity, simple design and low power which make it the best solution for the problems that limit the performance of the MIMO systems. The proposed ADC exhibits a linearity error of 0.56 % with a dynamic range equals to 800 mV and at small power consumption of 2.2 mW. The supply voltage used equals to 1.2 V using industrial 65 nm TSMC CMOS technology. The clock frequency equals to 4 GHz at a maximum input frequency of 2 GHz.
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1,153 |
Please write an abstract with title: SGBS: A novel smart garbage bin system for understanding household garbage disposal behaviour, and key words: Temperature sensors, Temperature measurement, Smart cities, Predictive models, Time measurement, Sensor systems, Servers. Abstract: Recently, there is a growing use of smart garbage management systems. Previous work on IoT garbage management systems presents an opportunity to provide a dynamic garbage collection and estimate future garbage growth. However, little attention has been given to understanding users’ garbage disposal behaviour and the type of garbage contents produced and disposed by the households. To examine, we designed and developed a smart garbage bin system “SGBS”, capable of tracking garbage amounts and identifying the contents of garbage disposed. The smart garbage bin was fastened with a ToF (time of flight), DHT22 (temperature and humidity), load cell and air quality sensors for measuring the amount of garbage. Households users used smartphones installed with a garbage annotation application to input the type of garbage contents they disposed. A sigfox antenna module was used as a gateway to send data into a cloud server. The developed system uses energy-saving algorithms with sleep and wake-up cycles to reduce energy usage and increase the lifetime of sensor devices on daily use. To evaluate our approach, we conducted an initial experiment on the smart garbage bin system in three households. Our findings show that households’ garbage disposal behaviour depends on the amount and contents of garbage as well as the routine of disposing such garbage content. We discuss the potential of our system to be scaled in a smart city to influence behaviour change, provide healthier life, and improve garbage management operational efficiency.
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1,154 |
Please write an abstract with title: Fast and Safe Path Planning Method for an Autonomous Smart Walker, and key words: Probabilistic logic, Robots, Legged locomotion, Safety, Path planning, Computational modeling, Surface treatment. Abstract: Autonomous Smart walkers are assistive devices that promote locomotion assistance and social interaction for people with lower limb impairments and provide a safe navigation. The Probabilistic Foam method (PFM) is a sampling-based path planner that uses structures called bubbles to compute obstacle-free paths with high clearance. These bubbles propagate through the free space and ensure safe regions, meeting the safety requirements in maneuvering. The Goal-biased Probabilistic Foam (GBPF) is a variant of the PFM that improves the propagation strategy to obtain shorter paths in reduced time. In this paper, we propose a new variant of the GBPF, called Improved Goal-biased probabilistic Foam (IGBPF), to improve the planning execution time. In addition, we present the modelling of a new bubble for a smart walker, using information from the workspace. Some simulated experiments were performed using PFM, GBPF, and IGBPF to plan safe paths for the smart walker robot considering two different maps, where our approach achieved satisfactory results related to safety, execution time and path length.
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1,155 |
Please write an abstract with title: Optimal Mapping of DG Units in Island Partitioning Mode under Fault Condition Using BPSO: A Case Study of Thadi Feeder of Nepal, and key words: Power supplies, Transportation, Voltage, Load shedding, Distribution networks, Power system reliability, Distributed power generation. Abstract: The distribution system is one of the most crucial parts of a power system. In case of any emergency fault condition in the network, the islanding operation with available Distributed Generation (DG) will maintain the availability/ reliability of the system within acceptable limit. The available DGs must be allocated optimally such that maximum load will be restored in the system. The purpose of this study is to determine the best approach for restoring the post-fault distribution system. It utilizes the graphical algorithm to assign the load to the DGs and perform the load shedding problem using Binary Particle Swarm Optimization (BPSO), if there is any shortage of the power supply in the system. Also, the load flow analysis is also performed to check the feasibility of the obtained optimal mapping of DGs. This paper properly takes into account the load priorities factors, voltage limit, power imbalance issues and the line capacity requirements for the optimal operation of system. The methodology is applied to rural radial distribution network of Nepal Electricity Authority (NEA), Thadi feeder, Nepal. and the results reflects the optimal maximum restoration of the load during post fault conditions.
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1,156 |
Please write an abstract with title: A Code for Unscented Kalman Filtering on Manifolds (UKF-M), and key words: Manifolds, Kalman filters, Two dimensional displays, Dispersion, Robots, Covariance matrices. Abstract: The present paper introduces a novel methodology for Unscented Kalman Filtering (UKF) on manifolds that extends previous work by the authors on UKF on Lie groups. Beyond filtering performance, the main interests of the approach are its versatility, as the method applies to numerous state estimation problems, and its simplicity of implementation for practitioners not being necessarily familiar with manifolds and Lie groups. We have developed the method on two independent open-source Python and Matlab frameworks we call UKF-M, for quickly implementing and testing the approach. The online repositories contain tutorials, documentation, and various relevant robotics examples that the user can readily reproduce and then adapt, for fast prototyping and benchmarking. The code is available at https://github.com/CAOR-MINES-ParisTech/ukfm.
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1,157 |
Please write an abstract with title: Aging and polarization phenomena in PE under high electric fields, and key words: Aging, Polarization, Morphology, Capacitance measurement, Space charge, Polyethylene, Infrared spectra, Positrons, Spectroscopy, Polymers. Abstract: The influence of high electrical DC fields (>20 kV/mm) on aging, polarization and on the morphology of polyethylene (PE) is discussed. Infrared and positron annihilation spectroscopy measurements as well as capacitance measurements tend to suggest that the polymer morphology is modified by high fields. The author shows that the accelerated electrical aging characteristics of PE are linked directly to the morphology changes induced by the field. Below a so-called critical field, the activation volume of the aging process is dependent on the field-induced strain. Above the critical field, the amorphous phase is deformed significantly, and weak van der Waals bonds are broken, leading to another, faster, aging regime. There is an excellent agreement between the proposed model and experimental data obtained with various PE samples. The possible relation between the submicrocavity formation proposed in his aging model and various polarization measurements is discussed. It is his contention that strong charge injection occurs only after submicrocavity formation, i.e. after weak bond breakage. As is well known, the polarization currents obtained under high fields are controlled by space charges. It seems that the wave packets and the negative resistance observed at >100 kV/mm in PE are associated with a steady state in field-induced defect formation. This suggests that space charges are related to the formation of submicrocavities and, therefore, are a consequence, not a cause, of high field aging.
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1,158 |
Please write an abstract with title: Dielectric Passivation and Edge Effects in Planar GaN Schottky Barrier Diodes, and key words: Capacitance, Dielectrics, Schottky diodes, Passivation, Schottky barriers, Geometry, Electric potential. Abstract: The influence of passivation on the edge effects (EEs) present in the capacitance-voltage ( C- V) characteristics of GaN Schottky barrier diodes (SBDs) with realistic geometry is analyzed by means of Monte Carlo simulations. The enhancement of the performance of SBDs as frequency multipliers is based on the optimization of the nonlinearity of the C- V curve, where EEs, strongly influenced by the dielectric passivation of the diode, play a significant role and must be carefully considered. The extra capacitance associated with EEs is affected by the presence of surface charges at the semiconductor/dielectric interface, which is considered by means of a self-consistent model in which the local value of the surface charge is updated according to the surrounding electron density. Our results indicate that, in realistic SBD geometries, a higher dielectric constant of the passivation material leads to more pronounced EEs. The thickness of the dielectric and the lateral extension of the epilayer are also important parameters to be taken into account when dealing with EEs.
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1,159 |
Please write an abstract with title: Load Frequency Control of Multi-Area Power System with Integration of SMES and Plug-In Electric Vehicles, and key words: Plug-in electric vehicles, Regulators, Simulation, Power system stability, Stability analysis, IP networks, Superconducting magnetic energy storage. Abstract: In this paper, fractional order PID (FOPID) optimized with seagull optimization algorithm (SOA) is designed as a secondary regulator for load frequency control (LFC) of the interconnected power system (IPS). However, the efficacy of FOPID is showcased with other integral order type classical controllers. IPS deliberated in this work is a widely used model of dual area hydro-thermal (DAHT) upon laying 10% perturbation of step load on area-1 (10%SLP) for investigation. Further, plug-in-electric vehicles (PEVs) are integrated into area-1 of DAHT for analysis purposes. DAHT responses are enhanced with the integration of PEVs. Later, the control areas of DAHT are incorporated with superconducting magnetic energy storage (SMES) devices to get further enhancement in system stability. Finally, simulation results reveal the superiority of implementing PEVs and SMES coordinated strategies for improvement in frequency regulation.
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1,160 |
Please write an abstract with title: Resource Provisioning to Spatio‐Temporal Urban Services, and key words: Resource management, Random variables, Real-time systems, Probability density function, Optimization, Mission critical systems, Internet of Things. Abstract: Efficient allocation of finite resources is a crucial problem in a wide variety of on‐demand smart city applications. Service requests often appear randomly over time and space with varying magnitude. Resource provisioning decisions need to be made strategically in real‐time, particularly when there is incomplete information about the time, location, and magnitude of future requests. In this chapter, we develop a systematic approach to the dynamic resource provisioning problem at a centralized source node to spatio‐temporal service requests. The spatial statistics are combined with dynamically optimal decision‐making to derive recursive threshold based allocation policies. The developed results are easy to compute and implement in real‐time applications. For illustrative purposes, we present examples of commonly used utility functions, based on the power law decay and exponential decay coupled with exponentially, and uniformly distributed magnitude of stochastic arrivals to demonstrate the efficacy of the developed framework. Semi‐closed form expressions along with recursive computational procedure have been provided. Simulation results demonstrate the effectiveness of the proposed policies in comparison with less strategic methodologies.
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1,161 |
Please write an abstract with title: Fundamental concepts of modeling, and key words: Employment, Analytical models, Concrete, Artificial intelligence, Certification, Evolution (biology), Biological system modeling, Physics, Chemistry, Biochemistry. Abstract: The fundamental conceptual-intellectual basis of modeling consists of a few elements, none if which is unique to modeling, but which together discriminate modeling from all other technical-academic disciplines. These core concepts include the following: existence, intention, representation, causality and determinism, and logical inference. These and similar concepts can provide the basis for a much needed specification of the body-of-knowledge of modeling and simulation.
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1,162 |
Please write an abstract with title: Modeling and design analysis of the Tesla Model S induction motor, and key words: Induction motors, Stator windings, Data models, Stators, Rotors, Finite element analysis, Windings. Abstract: In a few years, Tesla Motors Inc. has succeeded in establishing itself as one of the market leaders in the electric car market. The Tesla Model S, its first flagship vehicle, still arouses the interest and curiosity of engineers around the world, thanks to the manufacturer's technological secrets and bold choices, in particular about the unusual use of an induction machine in a mass-produced car. Thus, this article aims to present an accurate 2D finite element model of the Tesla Model S 60 induction motor. For this purpose, all the needed data are gathered and completed. Then, a model of the machine is made with Altair Flux2D™ software and several operating points are simulated in order to validate the created model, according to data available in literature. Finally, an analysis of the machine design or operating conditions is made in order to propose possible justifications to some of the technical choices made by Tesla engineers.
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1,163 |
Please write an abstract with title: Design and Realization of Replaying Record Data Software of Central Ship System of Survey Ship, and key words: Operating systems, Linux, Conferences, Software, Power electronics, Reliability, Marine vehicles. Abstract: This article aims at the situation that the verification methods of survey ship's central computer software are limited, and there are many cooperation positions required, the center computer system recording data replay software is developed under the Linux operating system. The replay software can distribute all kinds of data to the corresponding group address as required for the central computer software to read, process and display, it has enriched software verification and troubleshooting methods, and it does not require the cooperation of other positions, which greatly improves the efficiency of software verification.
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1,164 |
Please write an abstract with title: Ant colony optimization for FOP shop scheduling: a case study on different pheromone representations, and key words: Ant colony optimization, Job shop scheduling, Computer aided software engineering, Scheduling algorithm, Humans, NP-hard problem. Abstract: In this work we deal with the FOP shop scheduling problem which is a general scheduling problem including job shop scheduling, open shop scheduling and mixed shop scheduling as special cases. The aim of this paper is to compare different pheromone representations taken from the literature with our new approach. The pheromone representations are used by an ant colony optimization algorithm to construct solutions to the FOP shop scheduling problem.
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1,165 |
Please write an abstract with title: Combined run-time area allocation and long line re-routing for reconfigurable computing, and key words: Runtime, Field programmable gate arrays, Routing, Resource management, Time measurement, Reconfigurable logic, Programmable logic arrays, Programmable logic devices, Delay, Area measurement. Abstract: On-line (run time) algorithms for allocation of area and routing resources are a requirement if field programmable logic applications are to be loaded to the FPGA at the arbitrary request of users. Long lines are the preferred interconnect for such applications on dense FPGAs as they provide low delay channels. In this paper we investigate the combination of an area allocation algorithm based on the Minkowski sum with run time routing based on line probing for applications that are linked only by long lines. We show by construction that allocation and routing are feasible at run time using these algorithms. The paper then introduces a new metric to measure the performance of dynamic run time resource allocation on FPGAs. The new metric measures fragmentation of resources in an environment where applications selected from statistical distributions of area and execution time are continuously queued for placement on the FPGA. It is argued that this metric is more realistic compared to other measures which are based on static model of allocation. A simulation of this dynamic FPGA environment has revealed new behaviours related to run time reconfiguration. Firstly, to maintain full utilisation of the area resources of the FPGA, it will be necessary to queue tasks prior to execution. The queuing time of these tasks is an added overhead not previously reported. Secondly, small area applications may block other applications due to the exhaustion of long line routing resources. This adds to the other already observed blocking behaviour where large area cores may so dominate the FPGA area that further allocation is prevented. A new operation for the aggregation of small cores is proposed in this paper to overcome blocking associated with routing.
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1,166 |
Please write an abstract with title: Intelligent Statistical Modeling and Approaches of Financial Literacy, and key words: Communication systems, Computational modeling, Banking, IEEE Constitution, Financial services, Investment. Abstract: Financial Literacy helps in understanding how to use savings, Credit, Investments, Borrowings, Investments and expenditure. This paper analyses awareness about microfinance among rural women in Thrissur District. The financial literacy awareness is measured using four attributes which SHG Constitution, Accounts and Book Keeping, Managerial and Banking Aspects. The responses are collected using primary data from a sample size of 450 rural women at Thrissur District. Microfinance is interrelated to financial literacy and financial inclusion and financially literate women is well aware of the financial services available in banks and banks are ready to serve the financial literate people and microfinance and SHGs. It concludes that there is high and complete awareness about microfinance among the women in Thrissur District and they are financially literate. Making women financially literate is necessary not only to make them smart in money management but also for maintaining a healthy financial discipline.
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1,167 |
Please write an abstract with title: Electrooptic measurement of 500-kV pulsed voltages, and key words: Pulse measurements, Voltage, Probes, Electromagnetic measurements, Current measurement, Electromagnetic transients, Circuit testing, Electric variables measurement, Digital modulation, Optical modulation. Abstract: This paper describes a voltage probe in which the electrooptic Pockels effect is used in the measurement of ultrafast 500 kV pulses. Electrical isolation is provided between the high-voltage and the measurement circuits, and the probe is suitable for use in many applications where more conventional techniques are inapplicable. A special-purpose capacitive voltage divider attenuates the 500 kV to a level acceptable by the crystal of a Pockels cell. The attenuated voltage then modulates light from a laser system passing through the crystal, with the emerging signal being converted into electrical form and fed to a digital storage oscilloscope to provide a very accurate recording proportional to the divider input voltage. Experimental results confirm both the very fast response of the probe and its high-voltage capability.
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1,168 |
Please write an abstract with title: Cavity Alignment Using Beam Induced Higher Order Modes Signals in the TTF Linac, and key words: Linear particle accelerator, Couplers, Extraterrestrial measurements, Signal resolution, Superconducting device noise, Low pass filters, Computer hacking, US Department of Transportation, Life estimation, Test facilities. Abstract: Each nine cell superconducting (SC) accelerator cavity in the TESLA Test Facility (TTF) at DESY [1] has two higher order mode (HOM) couplers that efficiently remove the HOM power [2]. They can also provide useful diagnostic signals. The most interesting modes are in the first 2 cavity dipole passbands. They are easy to identify and their amplitude depends linearly on the beam offset from the cavity axis making them excellent beam position monitors (BPM). By steering the beam through an eight-cavity cryomodule, we can use the HOM signals to estimate internal residual alignment errors and minimize wakefield related beam emittance growth. We built and tested a time-domain based waveform recorder system that captures information from each mode in these two bands on each beam pulse. In this paper we present a preliminary experimental study of the single-bunch generated HOM signals at the TTF linac including estimates of cavity alignment precision and HOM BPM resolution.
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1,169 |
Please write an abstract with title: Optically transparent 10 gigabit Ethernet networks for fiber-to-the-desk application, and key words: Optical fiber networks, Ethernet networks, Costs, Optical fibers, Optical receivers, Bandwidth, Optical devices, Fiber lasers, Access protocols, Telecommunication network reliability. Abstract: Two novel architectures for optically transparent local area/access networks are presented. The networks are based on multimode optical fibers and passive multimode optical components, short wavelength lasers and detectors and they support both gigabit Ethernet and 10 gigabit Ethernet protocols. The novelty of the networks is in the fact that, for the first time, it is shown how a passive star-shaped network can accommodate gigabit Ethernet protocols. We expect that the implementation costs of the presented networks will be minimized in fiber-to-the-desk applications.
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1,170 |
Please write an abstract with title: Credit Card Fraud Detection using Logistic Regression, and key words: Support vector machines, Analytical models, Costs, Law enforcement, Credit cards, Feature extraction, Data models. Abstract: Credit card fraud detection targets to find out credit card fraud by analyzing the features of transaction data, which can prevent huge financial losses and reduce the pressure on police. There are three challenges in credit card fraud detection, i.e., unbalanced data, excessive invisible features, and the choice of suitable threshold to make the models more reasonable. To overcome the above challenges, this paper uses a modified Logistic Regression (LR) model to identify credit card frauds. Firstly, we balance the data by adopting the SMOTE method. We also figure out features’ importance and remove unimportant features. Secondly, we train the Logistic Regression model, and find out the best parameters for the model by Grid CV Search and compare their performance. Finally, we select the best threshold of the model by comparing confusion matrixes. To verify the effectiveness of LR, we compare LR with Support Vector Machines (SVM), K-Nearest Neighbour (KNN) and Decision Tree Classifier (DT) with the model score and Area Under ROC Curve (AUC). The experimental results show that LR achieves a 0.94 accuracy score, while KNN, SVM and DT achieve 0.93, 0.93 and 0.91 with default parameters, respectively. LR gets the highest classifier score 0.9824 at the AUC score, which demonstrates LR’s effectiveness in credit card fraud prediction.
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1,171 |
Please write an abstract with title: Identifying Demand Forecasting using Machine Learning for Business Intelligence, and key words: Demand forecasting, Globalization, Machine learning, Predictive models, Real-time systems, Business intelligence, Organizational aspects. Abstract: Making precise and valid sales prediction plays a vital role in any business organization. Modern methods that are used for sales prediction are often based on the historical income of a product. Further in these models, the corresponding timelines, adjustment of timelines, obtaining the comparative behavior of the product aids them for efficient demand forecasting. Since the product segmentation section on the E-trade platform consists of large numbers of related products, where the sales expert may meet, and attempts to include these series chain records into an integrated model. In this proposed model, on demand and off-demand relationship that is available on all products from the managers are considered. In addition to the forecast framework, a pre-scientific framework is also proposed to overcome the challenges of the E-trading business organizations. Comparing the predictive framework in the real-time global market is also achieved. Our approach accomplishes efficient outcomes when compared with the existing models.
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1,172 |
Please write an abstract with title: A Variable-Parameter Noise-Tolerant Zeroing Neural Network for Time-Variant Matrix Inversion With Guaranteed Robustness, and key words: Neural networks, Computational modeling, Numerical models, Convergence, Interference, Robustness, Mathematical model. Abstract: Matrix inversion frequently occurs in the fields of science, engineering, and related fields. Numerous matrix inversion schemes are often based on the premise that the solution procedure is ideal and noise-free. However, external interference is generally ubiquitous and unavoidable in practice. Therefore, an integrated-enhanced zeroing neural network (IEZNN) model has been proposed to handle the time-variant matrix inversion issue interfered with by noise. However, the IEZNN model can only deal with small time-variant noise interference. With slightly larger noise interference, the IEZNN model may not converge to the theoretical solution exactly. Therefore, a variable-parameter noise-tolerant zeroing neural network (VPNTZNN) model is proposed to overcome shortcomings and improve the inadequacy. Moreover, the excellent convergence and robustness of the VPNTZNN model are rigorously analyzed and proven. Finally, compared with the original zeroing neural network (OZNN) model and the IEZNN model for matrix inversion, numerical simulations and a practical application reveal that the proposed VPNTZNN model has the best robust property under the same external noise interference.
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1,173 |
Please write an abstract with title: Silica surface modification with liquid rubbers & functional groups for new polyolefin-based dielectric nano-composites, and key words: Silicon compounds, Liquids, Nanocomposites, Dielectrics, Rubber, Polymers, Surface treatment. Abstract: A novel hybrid approach for surface modification of nano-silica for polyolefin-based dielectric composites is presented. A fumed nano-silica was modified with long oligomeric chains of a liquid rubber, connected via urethane bonds to the silica surface increasing the compatibility with the matrix. Additionally, a secondary amino-silane was grafted in order to alter the charge trapping properties of the silica. The long oligomeric chains provide good dispersibility of the nanosilica in polypropylene/poly(ethylene-co-octene) (PP/POE) blends, while the functional urethane group along with a secondary amino-silane affected the charge trapping properties of the nano-composites by reducing the charge traps density and simultaneously increasing their depth. Scanning Electron Microscopy along with Differential Scanning Calorimetry revealed that the silica is preferably located in the PP phase, most likely due to its lower viscosity in comparison to POE. The silica particles exhibit a nucleating effect visible in a noticeable increase of the crystallization temperature of the PP phase, especially when the silica surface treatment is performed.
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1,174 |
Please write an abstract with title: Performance/Cost Comparison between Single-Stage and Conventional High Power Factor Correction Rectifiers, and key words: Costs, Power factor correction, Rectifiers, Topology, Equations, Motion measurement, Performance evaluation, Prototypes, Displays, Voltage. Abstract: A cost review and performance comparison between Single-Stage and Conventional High Power Factor Correction Rectifiers is presented in this paper. A new family of converters is often presented detailing electrical performance, yet discounting a cost evaluation of the topology; this paper attempts to address this issue. Detailed is an overview of two such topologies based upon a Boost Converter, for Input Current Shaping, ICS, and a Forward Converter for output regulation. The paper outlines essential design equations for the Single-Stage approach, discussing issues of importance and predicted behavior of such a design. The focus then moves onto measured operational performances of two 170W prototype PFC rectifiers, a Two-Stage and a Single-Stage respectively. Results obtained display comparable electrical performance, both in their abilities to limit input current harmonics and regulate the output voltage. However, a cost analysis that was performed indicated that monetary savings with the Single-Stage variants are not as significant as one would first expect. The unexpectedly small savings are a combination of the requirement for components with ratings that can withstand the stresses applied to them, and current market trends.
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1,175 |
Please write an abstract with title: Joint Synchronization and Compressive Channel Estimation for Frequency-Selective Hybrid mmWave MIMO Systems, and key words: Channel estimation, Synchronization, MIMO communication, Training, Signal to noise ratio, Radio frequency, Approximation algorithms. Abstract: Synchronization is a fundamental procedure in cellular systems whereby user equipment (UE) acquires the time and frequency information required to decode the data transmitted by a base station (BS). Due to the small antenna aperture at millimeter wave (mmWave), large antenna arrays are used to compensate for the low signal-to-noise ratio (SNR) at the receiver. For this reason, synchronization is often performed jointly with beam training as in 5G New Radio (NR) to boost the receive SNR. However, if the mmWave multiple-input multiple-output (MIMO) channel is to be estimated, then synchronization must be performed in the low SNR regime owing to the lack of directional beamforming during compressive channel estimation. Current mmWave channel estimation algorithms implicitly take synchronization for granted, which is a not practical assumption in the low SNR regime. To solve this problem, this work proposes the first synchronization framework for hybrid mmWave MIMO that is robust to carrier frequency offset (CFO) and phase noise (PHN) synchronization errors. We propose two novel multi-stage algorithms to jointly estimate the various unknown parameters, based on the expectation-maximization (EM) algorithm. By using the QuaDRiGa 5G NR channel simulator, we show that compressive channel estimation without prior synchronization is possible, and the proposed approaches outperform current solutions for joint beam training and synchronization currently considered in 5G NR.
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1,176 |
Please write an abstract with title: Research on Video Keyframe Extraction Method Based on Action Analysis, and key words: Image coding, Biological system modeling, Semantics, Redundancy, Predictive models, Feature extraction, Reliability engineering. Abstract: In the field of behavioral analysis, dividing keyframes based on video images to extract the motion information is one of the more common preprocessing methods, which can preserve as much semantic information as possible while compressing the data. In this paper, we propose a method for dividing video keyframes based on the analysis of human motion in video, which designs feature vectors based on human motion characteristics and gives suggestions for keyframe division by analyzing the change of quantitative values. It is experimentally confirmed that the method is less data-dependent, less time-consuming to engineer, more lightweight in the design of feature vectors and closer to the expected division results while ensuring relatively stable and reliable recognition results for downstream tasks, which provides more reliable antecedent support for the content analysis work of human motion videos.
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1,177 |
Please write an abstract with title: Research and Application of Dance Network Resources Storage based on Cloud Computing, and key words: Cloud computing, Humanities, Memory, Microcomputers, Load management, Information age, Mathematical models. Abstract: In the era of cloud computing, the way of data computing has changed, and the data storage mode has also undergone tremendous changes. The functions of personal computers have changed, and complex data computing and storage operations are not required. The key technology of cloud storage applications is to combine software and storage devices, use application software to convert storage devices into storage services. Use cloud computing technology to build a storage, sharing and service platform for teaching resources, solve the problem of repeated construction of teaching resources, and provide a full range of services for teaching. This paper constructs the load balancing optimization scheduler process and mathematical model, designs the Hadoop-based cloud storage model and the core functions of the network resource storage system to meet the needs of online teaching in the mobile information age.
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1,178 |
Please write an abstract with title: The Extraction Kicker System of the RCS in J-PARC, and key words: Magnets, Coaxial cables, Thyratrons, Impedance, Apertures, Magnetic fields, Voltage, Particle beams, Conductors, Power supplies. Abstract: The kicker magnets are installed in the vacuum chamber at the extraction section of the RCS (Rapid Cycling Synchrotron) in J-PARC (Japan Proton Accelerator Research Complex) facility. They kick the 3GeV proton beam to the extraction septum magnets followed by a downstream beam transport line. The RCS is designed to achieve the 1MW beam power with minimum loss. Therefore, the kicker is required to have a wide aperture, UHV (ultra-high vacuum) in its chamber, and uniformity of magnetic field. The wide aperture requires large exciting current and the use environment of the thyratron is very tough. Therefore aging run was found out to be needed. And the uniformity of the magnetic field was improved by changing length of the conductors. In order to achieve the UHV, we succeeded in reducing outgas from components of the magnet. In this paper, we will introduce the specification of the extraction kicker system in the RCS, and report countermeasure against the technical challenge described above.
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1,179 |
Please write an abstract with title: A new certificate updated method for smart IoT power meter, and key words: Meters, Switches, Encryption, Reliability. Abstract: This paper analyzes the shortcomings of the traditional certificate updated method for the power meter, and then proposes a new certificate updated method. In this method, a security chip is embedded in the smart IoT power meter, the root certificate is prefabricated in advance, and the root certificate cannot be updated after switching the lifecycle. On the premise of ensuring the authenticity of the source of the root certificate, the service certificate is signed with the corresponding private key of the root certificate, and then the signed certificate is updated through the negotiated session key. The smart IoT power meter successfully decrypts the signed certificate, and the service certificate can be updated only after the signature being successfully verified.
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1,180 |
Please write an abstract with title: RARE: Rare Action Rule Exploration, and key words: Conferences, Big Data, Data mining. Abstract: Action rule mining seeks to generate rules that indicate what changes can be made to move an object from one class (state) to another class. An action rule is composed of the changes, known as actions, that correlate with the change in the class value. The current work in action rule mining focuses on frequent, or highly occurring, action rules. The working assumption is that the end user is interested in class transitions that move a large number of objects from the initial class to the new (final) class with a high degree of confidence. Currently, very little work focuses on rare action rules; that is, classes which occur infrequently. In this paper, we provide a definition for a rare action rule and then propose a consequent-constraint based algorithm for generating these rare action rules.
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1,181 |
Please write an abstract with title: Particle swarm optimization of miniaturized quadrature reflection phase structure for low-profile antenna applications, and key words: Particle swarm optimization, Reflection, Reflector antennas, Finite difference methods, Time domain analysis, Terminology, Circuit topology, Surface waves, Periodic structures, Metamaterials. Abstract: A new terminology, quadrature reflection phase structure (QRPS), is defined. Without applying traditional methods, such as effective circuit modeling, a parallel PSO/FDTD (particle swarm optimization/finite difference time-domain) algorithm is utilized to determine a QRPS topology based on its reflection phase characteristics. The optimized QRPS has miniaturized dimensions and provides good performance in a surface wave antenna application. The parallel PSO/FDTD algorithm has the potential to be promising in more complicated QRPS/EBG designs, by exploiting the robustness of the PSO kernel, the accuracy of a full-wave simulator and faster computation due to its parallel implementation.
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1,182 |
Please write an abstract with title: Networked SSD: Flash Memory Interconnection Network for High-Bandwidth SSD, and key words: Microarchitecture, Network topology, Multiprocessor interconnection, Systems architecture, Bandwidth, Organizations, Interference. Abstract: As the flash memory performance increases with more bandwidth, the flash memory channel or the interconnect is becoming a bigger bottleneck to enable high performance SSD system. However, the bandwidth of the flash memory interconnect is not increasing at the same rate as the flash memory. In addition, current flash memory bus is based on dedicated signaling where separate control signals are used for communication between the flash channel controller and the flash memory chip. In this work, we propose to exploit packetized communication to improve the effective flash memory interconnect bandwidth and propose packetized SSD (pSSD) system architecture. We first show how packetized communication can be exploited and the microarchitectural changes required. We then propose the Omnibus topology for flash memory interconnect to enable a packetized network SSD (pnSSD) among the flash memory – a 2D bus-based organization that maintains a “bus” organization for the interconnect while enabling direct communication between the flash memory chips. The pnSSD architecture enables a new type of garbage collection that we refer to as spatial garbage collection that significantly reduces the interference between I/O requests and garbage collection. Our detailed evaluation of pnSSD shows 82% improvement in I/O latency with no garbage collection (GC) while improving I/O latency by 9.71× when GC occurs in parallel with I/O operation, through spatial garbage collection.
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1,183 |
Please write an abstract with title: Productos interactivos gamificados para promover la lectura de autores independientes, and key words: Visualization, Tutorials, Media, Instruments, Games, Entertainment industry, Education. Abstract: Actualmente el mundo experimenta una crisis de interés por los temas serios, como pueden ser la educación o el trabajo. Una de las posibilidades para contrarrestar esto ha sido la aplicación de la gamificación. En este artículo presentamos una experiencia gamificada para los alumnos aprendiendo sobre el desarrollo de productos interactivos mediante la cual desarrollaron un producto para la promoción de la lectura.
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1,184 |
Please write an abstract with title: The Comparison Between Synthetic Aperture Radar Imageries and Surface Truth of Ocean Waves, and key words: Synthetic aperture radar, Surface waves, Sea surface, Ocean waves, Extraterrestrial measurements, Sea measurements, Frequency, Pressure measurement, Pressure gauges, Propulsion. Abstract: Ocean waves measured offshore of Marineland, Florida, by the synthetic aperture radar (SAR) are compared with the surface truth data. The Fourier transform of SAR imageries are taken and the corrections of the wave directions and wave lengths due to the relative velocities between SAR and waves are considered. Favorable comparisons are obtained for the peak frequencies, wave directions, and directional distributions. However, the one-dimensional SAR spectra are quite different from the surface truth wave height spectra.
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1,185 |
Please write an abstract with title: Permutation-based RNA secondary structure prediction via a genetic algorithm, and key words: RNA, Genetic algorithms, Genetic programming, Nuclear magnetic resonance, Encoding, Cities and towns, Road transportation, Prediction algorithms, Hydrogen, Testing. Abstract: This paper presents new results with a permutation-based genetic algorithm (GA) to predict the secondary structure of RNA molecules. More specifically, the proposed algorithm predicts which canonical base pairs forms hydrogen bonds and builds helices, also known as stems. We discuss a GA where a permutation is used to encode the secondary structure of RNA molecules. We have tested RNA sequences of lengths 76, 210, 681, and 785 nucleotides over a wide variety of operators and parameter settings and focus on discussing in depth the results with two crossover operators asymmetric edge recombinations (ASERC) and symmetric edge recombination (SYMERC) that have not been analyzed in this domain previously. We demonstrate that the keep-best reproduction (KBR) operator has similar benefits as in the travelling salesman problem (TSP) domain. We also compare the results of the permutation-based GA with a binary GA, demonstrating the benefits of the newly proposed representation.
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1,186 |
Please write an abstract with title: High-Power Microwave Rejection Filters Using Higher-Order Modes, and key words: Microwave filters, Insertion loss, Propagation losses, Filtering, Frequency, Waveguide discontinuities, Power transmission lines, Tuning, Radar antennas, Microwave theory and techniques. Abstract: In order to obtain filters capable of handling very high power, the use of radial lines and uniform line discontinuities was investigated. Forty-five-degree tapers and uniform lines were used to design a high-power microwave filter capable of handling 700 kw at 15 pounds pressure in a 0.900 by 0.400 ID waveguide. In addition to the filtering which results from the discontinuities in the TE/sub 10/ mode in the waveguide, high insertion loss elements are effected when the enlarged uniform line section is larger than the TE/sub 10/ mode waveguide wavelength and when the length of the enlarged section is approximately (2n -1)lambda/sub g//4. Extremely large insertion losses are possible by the cascading of these elements. Tuning, in the standard-size waveguide, has no effect on the insertion loss of the higher-mode enlarged waveguide at its resonant frequency. Empirical design formulas are evolved and the design procedure for band-rejection filters is given, using these high insertion loss elements.
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1,187 |
Please write an abstract with title: Erratum to “Polyphase Waveform Design for MIMO Radar Space Time Adaptive Processing” [Mar 20 2143-2154], and key words: MIMO radar, Airborne radar, Object detection. Abstract: Presents corrections to page number information in the above mentioned paper.
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1,188 |
Please write an abstract with title: Computational Modeling Framework for the Study of Infectious Disease Spread through Commercial Air-Travel, and key words: Airplanes, Analytical models, Infectious diseases, Atmospheric modeling, Computational modeling, Windings, Stochastic processes. Abstract: This paper presents an integrated computational modelling framework combining pedestrian dynamics and infection spread models, to analyse the infectious disease spread during the different stages of air-travel. While, commercial air travel is central to the global mobility of goods and people, it has also been identified as a leading factor in the spread of several epidemic diseases including influenza, SARS and Ebola. The mixing of susceptible and infectious individuals in these high people density locations like airports involves pedestrian movement which needs to be taken into account in the modelling studies of disease dynamics. We develop a Molecular Dynamics based social force modeling approach for pedestrian dynamics and combine it with a stochastic infection dynamics model to evaluate the spread of viral infectious diseases in airplanes and airports. We apply the multiscale model for various key components of air travel and suggest strategies to reduce the number of contacts and the spread of infectious diseases. We simulate pedestrian movement during boarding and deplaning of some typical commercial airplane models and movement of people through security check areas. We found specific boarding strategies that reduce the number of contacts. Further, we find that smaller airplanes are more effective in reducing the number of contacts compared to larger airplanes. We propose certain queue configuration that reduces contacts between people and mitigate disease spread.
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1,189 |
Please write an abstract with title: A Survey on Fault Detection and Diagnosis Methods, and key words: Fault diagnosis, Fault detection, Process control, Estimation, Fault tolerant control, Maintenance engineering, Sensors. Abstract: Fault detection and diagnosis in modern control systems have been of constant interest in recent publications. Its progress is a consequence of the requirements imposed by the development of other technologies through demands on security operations, guarantee of the required functions execution, reduction of costs, and optimization of maintenance tasks. In order to provide the survey in this area, the article discriminates the main fault detection and diagnosis techniques, allowing the reader to acquire, in different practice scenarios, an ability to discern the possibilities of applying the methods in focus. The text is divided in signal analysis-based methods, model-based methods, data-driven methods, and hybrids methods. The conclusion exposes the main global limitations in the area as possible subjects for future works.
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1,190 |
Please write an abstract with title: The Computing Architectures Donnybrook, and key words: Computer architecture. Abstract: The concept of computer architecture has expanded well beyond its historical boundaries. This article sets forth a more comprehensive framework for the direction of the “Computing Architectures” column.
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1,191 |
Please write an abstract with title: Efficiency improvement of a thermal photovoltaic hybrid system optimized by using an artificial neural network, and key words: Photovoltaic systems, Optimization, Artificial neural networks, Training, Tin, Neurons. Abstract: During the photovoltaic conversion of the solar collector, heat is generated, which increases the temperature of PV cell and decreases its efficiency. This phenomenon is exploited by combining between the PV system and the thermal system to form the photovoltaic thermal hybrid solar collectors (PVT), which generates electricity and heat at the same time. This paper presents efficiency improvement of a thermal photovoltaic hybrid system by using an artificial neural network (ANN) to ensure the operation of a generator at its maximum power point (MPPT) and reduce the error between the operating power and the maximum reference power which is variable depending on the load and climatic conditions. The results show that the ANN system correct decisions and avoid cases of indecision, with their ability to adapt to unknown situations.
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1,192 |
Please write an abstract with title: Efficient Mid-Infrared Dispersive Wave Emission in LiNbO<inf>з</inf> Waveguides Using a Weak CW Trigger, and key words: Spectroscopy, Asia, Modulation, Bandwidth, Dispersion, Photonics. Abstract: We numerically propose a low-consumption scheme to enhance the mid-infrared dispersive wave by adding a weak CW trigger, and the optimal CW-triggering wavelength is ascertained to be half modulation instability gain bandwidth.
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1,193 |
Please write an abstract with title: Dynamic Modeling and Motion Stability Analysis of Tethered UAV, and key words: Automation, Propellers, Simulation, Dynamics, Prototypes, Interference, Stability analysis. Abstract: Tethered unmanned aerial vehicle (TUAV) is unstable due to some uncertain factors such as wind interference and tension of the tether. For solving above issues, a stability analysis method based on Lyapunov exponents is introduced. Firstly, the catenary theory and the Euler-Lagrange method are formed to establish the model of the tether and UAV respectively, combining two models to obtain the dynamical model of TUAV. Then Lyapunov exponents method is used to construct the quantitative relationship. Finally, the stability is verified by the flight test of the physical prototype. Results show that: 1) in a certain range, the larger the propeller radius is, the better the flight stability of the system is; 2) in the landing phase, the higher the initial speed of the landing motor is, the better the stability of the tethered unmanned aerial vehicle is.
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1,194 |
Please write an abstract with title: Test structures for quantum efficiency characterization for silicon image sensors, and key words: Testing, Silicon, Image sensors, Electrons, Diodes, Optical sensors, Pixel, Power measurement, Photodiodes, Current measurement. Abstract: To study the spectral response, test structures are specially designed. This paper presents quantum efficiency results for different kind of N-well/P-epi diodes. A comparison is made between a diode under active and under STI with or without salicidation. The impact of the design (different N-well geometries) and two reading nodes (CMOS and NMOS) are also studied. These measurements are then compared with the ISE simulation using a 2D simulation program DIOS.
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1,195 |
Please write an abstract with title: Optimal Siting and Sizing of Wireless EV Charging Infrastructures Considering Traffic Network and Power Distribution System, and key words: Costs, Batteries, Inductive charging, Vehicle dynamics, Transportation, Routing, Electric vehicle charging, Electric vehicles, Wireless power transfer, Energy management. Abstract: The main challenges in the widespread deployment of electric vehicles (EVs) are limited driving range, long charging downtime, lack of charging stations in some areas, and high battery cost. Dynamic wireless charging (DWC) technology can overcome some of these obstacles by recharging EV batteries remotely while vehicles move over the charging infrastructures. However, most studies have limited this technology to public EVs working in specific routes like electric buses and taxis routes. This paper presents a long-term stochastic scenario-based mathematical model for allocating and sizing DWC infrastructures considering Ev’s location-routing, power distribution system (PDS) losses, and transportation network traffic. The proposed long-term model allows all types of EVs to take advantage of the installed DWC infrastructures and facilitate EVs’ widespread use by overcoming conventional charging technologies problems. The optimization problem is structured in the form of a Mixed Integer Non-Linear Programming (MINLP) model. Simulation results with detailed analyzes are furnished to illustrate the characteristics and performance of the model in a coupled network combining transportation and power networks. The numerical analysis provides meaningful insight into the transportation system design based on DWC technology and the effect of EV routing on the charging infrastructure allocation. Simulation results show that using Location-Routing Problem (LRP) can save up to 45% of the total cost of the DWC system. In addition, the proposed model, along with the simulations performed, demonstrates the advantage of DWC technology in reducing the size of vehicle batteries.
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1,196 |
Please write an abstract with title: Extended temperature operation of one megabit bubble memory devices, and key words: Temperature distribution, Coils, Magnets, Production, Temperature dependence, Conducting materials, Packaging, Impedance, Circuit testing, Circuit synthesis. Abstract: We have demonstrated that the operating temperature range of MBM2011A commercial (0-70°C) one megabit bubble memory devices may be significantly extended by application of temperature compensation to the chip biasing field and function currents. Compensation of biasing field is achieved using the internal z-bias coil of the device. Full functionality and non-volatility of devices over a -55°C to +85°C case temperature range have been achieved using predominantly linear tracking rules. This greatly increased operating temperature range significantly extends the application range of bubble technology.
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1,197 |
Please write an abstract with title: Simpler Than FRESH Filter: A Parametric Approach for Cyclostationary Noise Generation in NB-PLC, and key words: OFDM, Noise measurement, Gaussian distribution, Probability density function, Standards, Narrowband, Gaussian noise. Abstract: A key challenge in narrowband power line communications (NB-PLC) is the mitigation of impairments introduced by the correlated cyclostationary noise. The frequency-shift (FRESH) filtering approach has been recently proposed to reproduce a cyclostationary NB-PLC noise with characteristics similar to those obtained from field measurements. In this letter, we use a classification of the noise generated by the FRESH filter into three classes to propose a simple method to produce noise samples with statistics similar to those obtained at its output. The approach consists of parametrized spectral and temporal shapings applied to a white Gaussian noise sequence. We validate our proposed method by comparing its generated noise samples with those obtained using the FRESH filter and using measurements in terms of: i) normalized mean-squared error between the cyclic auto-correlations; ii) bit error rate.
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1,198 |
Please write an abstract with title: Fast decentralized learning of a Gaussian mixture model for large-scale multimedia retrieval, and key words: Large-scale systems, Peer to peer computing, Pattern recognition, Supervised learning, Speaker recognition, Training data, Web pages, Distributed computing, Multimedia systems, Indexing. Abstract: We address herein the distributed computation of a probability density estimate. Class-conditional probability density estimation is a central need in multimedia pattern recognition, but has classically be conducted in a centralized fashion. In contrast, the present work is motivated by the perspective of a multimedia indexing and retrieval peer-to-peer system over the Internet. In a decentralized fashion, algorithms and data from various contributors would cooperate towards a collective statistical learning. A typical need is aggregation of probabilistic Gaussian mixture models describing the same class, but estimated on several nodes on different data sets. We tackle this goal through an approach requiring only moderate computation at each node and little data to transit between nodes. Both properties are obtained by fusion models via their (few) parameters, rather than via multimedia data itself. Estimation of the aggregated model is provided by an iterative scheme, derived from a modification on Kullback divergence. We provide experimental results on a speaker recognition task with real data, in a gossip propagation setting.
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1,199 |
Please write an abstract with title: Fusion of Camera-based Vessel Detection and AIS for Maritime Surveillance, and key words: Deep learning, Visualization, Automation, Azimuth, Surveillance, Estimation, Cameras. Abstract: Camera-based vessel identification is one of the essential maritime surveillance measures. The existing deep learning (DL)-based vessel classification methods have challenges in achieving the detailed vessel information (e.g., vessel identity) under poor visual conditions. In some applications, they cannot meet the safe scheduling and abnormal activity identification purposes in the camera surveillance system. This paper proposed a fusion framework, which takes the visual detection and the automatic identification system (AIS) as inputs to obtain accurate and robust vessel identification to address these challenges. Visual detection uses an innovative method to estimate the distance of the identified vessel target from the camera and the azimuth angle relative to the camera based on the images from the monocular camera. The distance and azimuth angle were further fused with AIS data to obtain the fused output. The test results based on 3976 images show that the mean absolute error of the visual-based distance estimation method is 0.72km. The success rate of visual detection and AIS data association is 75.7%.
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