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 (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 · · · .

J osé Almirall started his career 31 years ago in the forensic science laboratory of the Miami-Dade police department. Now a professor at Florida International University, he develops analytical tools for forensic investigators, including matching broken glass shards to their source using trace-element analysis and detecting crime-related volatiles, such as those found in drugs or gunshot resid...

We propose to study how to provide, on a large scale, the professional development and continuing support teachers need to improve student achievement in mathematics. Over five years of a longitudinal study, we will examine how the use of specific research-based instructional strategies in the classroom— supported by professional development and highly rated curriculum materials—relate to lasti...