1. L. K a r t t u n e n ( K a r t t u n e n 1970, 1971) demons t r a t ed t h a t i n E n g l i s h t h e r e e x i s t s i x c l a s s e s o f p r e d i c a t e s t h a t d i f f e r as f o r t h e r e l a t i o n s h i p s h o l d i n g be tween the p r e d i c a t e and i t s s e n t e n t i a l complement: f a c t i v e s , p o s i t i v e and n e g a t i v e two-way i m p l i o a t i v e s...

This paper presents the argument that the use of wikis in a learning environment involves a different way of thinking, learning and knowing than perhaps many practitioners are familiar with. In particular, wikis foster collaborative, egalitarian learning that is designed to foster group interaction instead of just individual performance. Moreover, wiki based learning involves community ideals a...

We consider two infinite games, played on a countable graph G given with an integer vertex labelling. One player seeks to construct a ray (a one-way infinite path) in G, so that the ray’s labels dominate or elude domination by an integer sequence being constructed by another player. For each game, we give a structural characterization of the graphs on which one player or the other can win, prov...

Energy efficient transmission has become increasingly important in future green communications. We focus on cooperative networks with multiple Amplify-and-Forward relays deployed in this paper. A joint relay selection and power allocation transmission scheme applicable to both one-way and two-way relay networks is proposed for minimizing the weighted energy consumed per bit transmitted. Close-f...

Internet provides an interactive mode for information retrieval. But its bandwidth is narrow. TV can provide broadband service. Usually, it is not interactive. In China, the CATV (CAble TeleVision) is very popular and is mainly running in one-way mode. It is expensive to rebuild the CATV from one-way to two-way. Using Prefetch System, we can achieve the virtual Internet and virtual two-way comm...

In the last decade, the main Brazilian research funding agencies, CNPq and CAPES, have introduced gender projects aimed to understand the situation of women in general and in science in particular. These projects have led to an increased awareness of the problem. There is still a long way to go in the quest for equal access to opportunities and resources. This paper compares the production and ...