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Since the earliest days of the Internet, people have joined online discussion groups to find and interact with others who shared their interests. From this interplay, different kinds of virtual communities emerged, from fan clubs to communities of practice. These Internet communities can develop rich cultures and achieve sophisticated problem-solving in numerous disciplines. This book tests a method for detecting and evaluating stable and strongly cohesive subgroups within larger discussion groups. The study targeted Usenet newsgroups, but the method generalizes to other platforms. Using 30...

Communities of Practice (CoPs) are informal groups people form around shared problems or disciplines. As natural drivers of knowledge-sharing and innovation, they are the cornerstone of Knowledge Management programs, and are viewed by organizational scholars as a key element of the knowledge-based view of the firm. Nowadays, employees and organizations face considerable turmoil from phenomena such as globalization, rapid technological change, and the increasingly mobile workforce. This hinders employees from regular engagement in face-to-face CoPs, thus increasing the need for virtual CoPs...

A volume in Education Policy in Practice: Critical Cultural Studies Series Editors Edmund T. Hamann, University of Nebraska-Lincoln and Rodney Hopson, George Mason University For most of US history, most of America's Latino population has lived in nine states-California, Arizona, New Mexico, Colorado, Texas, Illinois, Florida, New Jersey, and New York. It follows that most education research that considered the experiences of Latino families with US schools came from these same states. But in the last 30 years Latinos have been resettling across the US, attending schools, and creating new...