Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Modernized Latvian Ergonomic Keyboard   Increasingly more people use computers and create content using keyboards
(even with leading edge touch-screen technology). As in the most part of the
world, in Latvia also conventional "Qwerty" keyboard is used. Though for
Latvian it is much worse than for English, especially due to enormous load to
little fingers. It causes repetitive strain injuries and affects productivity
of workers with extensive keyboard usage, especially for data input operators,
call centers, inquiry office workers, etc. Improving computer keyboard layout
decrease stress to hands and fingers thus minimizing exhaustion and injuries.
With analysis of English and Latvian public domain novels and modern texts,
letter appearance an sequence distribution for Latvian language was found.
Qualities of alternative layouts for English (Dvorak, Colemak, Hallinstad) were
investigated and open source carpalx simulation tool was adjusted according to
the findings. Then carpalx was used to check more than 25 million keyboard
layouts, measuring finger/hand effort, stroke typing convenience etc., to find
the best one. It was proved that existing "\v{S}usildatec" (classic Latvian
Ergonomic standard) keyboard is only slightly better than "Qwerty" for Latvian,
though it is much worse for English. After computer simulation, several best
layouts were tried practically for more than 6 months and most convenient one
was promoted as a new "Latvian Modern" keyboard. Its typing effort is less than
for "\v{S}usildatec", load is distributed according to finger strength, and
typing strokes are alternating better between hands and fingers. Comparing to
"Qwerty" keyboard new layout is better not only for Latvian but for English
also. Keyboard drivers are developed for Microsoft Windows and Linux operating
systems and are freely available in the web under permissive license.

37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
2
The categories of this paper are: math
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
17
The categories of this paper are: q-fin
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an