diff --git a/chap6/discussion.tex b/chap6/discussion.tex index 9a578f5..ecf0d6a 100644 --- a/chap6/discussion.tex +++ b/chap6/discussion.tex @@ -231,7 +231,8 @@ on muscle activity, we could not identify significant differences in terms of \% of \glsfirst{MVC} for any of our \gls{EMG} measurements. Only a slight trend, that \textit{Nyx (35 g)} produced the highest flexor \%\gls{MVC} for only 14\% of participants, could be interpreted as anecdotal evidence towards our -hypothesis, that actuation force has an impact on muscle activity. +hypothesis, that actuation force has an impact on muscle activity. Therefore we +have to reject our hypothesis. \begin{phga_hyp*}[4 $\rightarrow$ \xmark] Differences in actuation force influence muscle activity while typing. @@ -262,9 +263,49 @@ other keyboards. \textit{I3Z4XI7H} also reported in the post-experiment interview, that \textit{Hera} was surprisingly pleasant to use and that pain was significantly lower than with all other keyboards including \textit{Own}. However, because of the nearly identical scores to -\textit{Aphrodite} we have to reject our hypothesis, that an adjusted keyboard -is more satisfactory to use than standard keyboards. +\textit{Aphrodite} in almost all categories, we have to reject our hypothesis, +that an adjusted keyboard is more satisfactory to use than standard keyboards. \begin{phga_hyp*}[7 $\rightarrow$ \xmark] - An adjusted keyboard is perceived as more satisfactory to type with compared to standard keyboards. + An adjusted keyboard is perceived as more satisfactory to type with compared + to standard keyboards. \end{phga_hyp*} + +Similarly, the resulting error rates measured for \textit{Hera (35 - 60 g)} were +close to equal to the results of \textit{Aphrodite (50 g)} and for speed related +metrics between those two keyboards only slight improvements while using +\textit{Hera} in \gls{WPM} (0.8\%), \gls{AdjWPM} (0.6\%) and \gls{KSPS} (1\%)― +that were not statistically significant―were recorded during our experiment. It +was still interesting to see, that \textit{Hera} was the fastest, out of all +four test keyboards, for eleven (45\%) out of the twenty-four subjects and that +albeit the usage of 30\% keyswitches\footnote{That were actually pressed during + our typing tests} that required 35 - 40 g actuation force, which is similar to +the actuation force of \textit{Nyx (35 g)}, we did not see comparably high error +rates. Because of the lacking evidence, that an adjusted keyboard produces less +errors or supports the typist in achieving higher typing speeds, we have to +reject our two hypotheses regarding those improvements. + +\begin{phga_hyp*}[5 $\rightarrow$ \xmark] + An adjusted keyboard improves typing speed compared to standard keyboards + (efficiency - speed). +\end{phga_hyp*} + +\begin{phga_hyp*}[6 $\rightarrow$ \xmark] + An adjusted keyboard is perceived as more satisfactory to type with compared + to standard keyboards. +\end{phga_hyp*} + +Our experiment basically revealed, that keyboards which utilized keyswitches +with actuation forces that were neither to light (35 g) nor to heavy (80 g), +generally outperformed keyboards which featured those extreme actuation +forces. In the following section, we elaborate on possible limitations of our +experimental design and future research that could be reasonable to further +investigate advantages and disadvantages of adjusted keyboard designs. + + + + + + + +% --- diff --git a/chap6/recommendations.tex b/chap6/recommendations.tex deleted file mode 100644 index fd75cf9..0000000 --- a/chap6/recommendations.tex +++ /dev/null @@ -1,2 +0,0 @@ -\section{Recommendations} -\label{sec:label} diff --git a/chap7/conclusion.tex b/chap7/conclusion.tex index 310e60c..e1a72fc 100644 --- a/chap7/conclusion.tex +++ b/chap7/conclusion.tex @@ -1,5 +1,13 @@ \section{Conclusion} \label{sec:label} +Since keyboards are still the main data input device while using a computer and +are also found to be related to discomfort or even \glsfirst{WRUED} +\cite{pascarelli_wrued}, we tried to evaluate a possible modification to the +existing keyboard design, that does not require the consumers to extensively +adapt their typing behaviour, nor the producers to massively deviate from +existing manufacturing processes. Therefore, we created a keyboard that used +keyswitches with actuation forces, related to the specific finger the keyswitch +is operated with. \subsection{Future work} \label{sec:label} diff --git a/mainpart.tex b/mainpart.tex index 2f260ed..aff6d1d 100644 --- a/mainpart.tex +++ b/mainpart.tex @@ -26,7 +26,6 @@ %\thispagestyle{myPageStyle} \input{chap6/discussion} -\input{chap6/recommendations} % 8. Discussion, Deriving concrete action recommendations \newpage %\thispagestyle{myPageStyle}