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Our main, novel, result is that a certain non-central chi-squared mixture of distributions itself scaled distribution. From this and link to known on representation for central distribution, numerous further results, both old new, ensue. These include results F, F Libby–Novick distributions. The main involves all with the same degrees freedom; it also extended case where mixing distribution has...

The purpose of this study is to investigate students’ responses to learning through an on-line agricultural simulation game. Four hundred and fifty agricultural engineering students, studying at three different universities with four grades in Turkey, participated in the study. The data collected from the questionnaires were analysed by calculating frequencies of responses for the demographics ...

s of CHI, Conf. Human Factors in Computing Systems, 2001; www.edgelab.sfu.ca/publica-

s of the ACM Conference on Human Factors in Computing Systems (CHI ‘03), 5 – 10 April 2003 (New York: ACM Press), pp. 942 –