A large number of interesting organocatalytic enantioselective protocols have been explored and successfully applied in the last decade. Among them, the Henry (nitroaldol) reaction represents a powerful carbon-carbon bond-forming procedure for the preparation of valuable synthetic intermediates, such as enantioenriched nitro alcohols, which can be further transformed in a number of important ni...

The personality construct of geekism is introduced as the tendency to act out one’s need for cognition in the domain of computing technology. Achievement goal theory is introduced, and we ask, what drives geeks in terms of achievement. In a questionnaire study, it is shown that geekism is related to achievement motivation in imagined situations with technology. Need for cognition showed strong ...

The (re)founding conference of the European chapter of the World Association of Community Broadcasters (AMARC) took place in Bucharest, Romania, in December 2008 (http:// www.amarc.org/conference_europe/index.html). About 60 community media practitioners from 18 countries in Eastern, Central and Western Europe, took part in the four-day meeting. Items on the agenda included the debate on curren...

How do you think the June 4th movement of 1989 will be remembered----as another May 4th 1919, the threshold of a period of general political awakening and turbulence, or instead as a Chinese version of 1848 or 1968 in Europe: a last spontaneous explosion of idealistic revolt, followed by a headlong pursuit of material consumption, and complacent institutional stabilization----the very opposite ...

This paper presents an extensive data-based analysis of the non-profit democratic hospitality exchange service bewelcome.org. We hereby pursuit the goal of determining the factors influencing its growth. It also provides general insights on internet-based hospitality exchange services. The other investigated services are hospitalityclub.org and couchsurfing.org. Communities using the three serv...

We prove that the robber can evade (that is, stay at least unit distance from) at least bn/5.889c cops patroling an n × n continuous square region, that a robber can always evade a single cop patroling a square with side length 4 or larger, and that a single cop on patrol can always capture the robber in a square with side length smaller than 2.189 · · · .

Algebra is a branch of mathematics that deals with symbols and also the rules for manipulating those symbols, which are used to represent numbers and quantities in mathematical formulae and equations. It is needed and used in our everyday lives. The purpose of this study was to examine students’ performance in algebra related to gender and types of schools.The research sample consisted of 317 s...