Specifications

APPENDIX A. UTILIZED FREE AND OPEN SOURCE SOFTWARE 71
A.3 Statistical Calculations
Both the survey (Appendix B) and the latency measurements (Chapter 6, §6.2) have been
evaluated using Gnumeric. Gnumeric is a powerful spreadsheet software and offers the pos-
sibility to generate graphs. Generated graphs can be exported to SVG. Gnumeric is released
under the terms of the GPL and is available from http://www.gnome.org/projects/.
A.4 Survey
The implementation of the survey (Appendix B) was realized with the Unit Command Climate
Assessment and Survey System (UCCASS), a PHP and MySQL based survey system. It is
highly customizable and easy to set up. Gathered data of surveys can be exported to comma
separated values (CSV) format and HTML tables. UCCASS is released under the terms
of the Affero General Public License (AGPL) [Aff02]. Compared to the GPL, the AGPL
has an additional section which covers the use of software over a computer network. The
UCCASS source code is available from the project site located at http://www.bigredspark.
com/survey.html.