Increasing numbers of ISPs have begun implementing multicast infrastructure. Soon the Internet will provide multicast connectivity between any two points on the Internet the way it provides for unicast traffic today. Long-evolving protocols are reaching maturity, and enterprise networks and ISPs around the world are ramping up their multicast infrastructure. Now, more than ever, network engineers must be ready to deal with new applications that capitalize on the simultaneous, efficient delivery of data and imagery to multiple recipients.

Over the past two centuries, many aspects of criminal behavior have been investigated. Finding this information and making sense of it all is difficult when many studies would appear to offer contradictory findings. The Handbook of Crime Correlates collects in one source the summary analysis of crime research worldwide. It provides over 400 tables that divide crime research into nine broad categories: Pervasiveness and intra-offending relationships Demographic factors Ecological and macroeconomic factors Family and peer factors Institutional factors Behavioral and personality factors Cognitive factors Biological factors Crime victimization and fear of crime Within these broad categories, tables identify regions of the world and how separate variables are or are not positively or negatively associated with criminal behavior. Criminal behavior is broken down into separate offending categories of violent crime, property crime, drug offenses, sex offenses, delinquency, general and adult offenses, and recidivism. Accompanying each table is a description of what each table indicates in terms of the positive or negative association of specific variables with specific types of crime by region. This book should serve as a valuable resource for criminal justice personnel and academics in the social and life sciences interested in criminal behavior.

From Idiocy to Mental Deficiency is the first book devoted to the social history of people with learning disabilities in Britain. Approaches to learning disabilities have changed dramatically in recent years. The implementation of 'Care in the Community', the campaign for disabled rights and the debate over the education of children with special needs have combined to make this one of the most controversial areas in social policy today. The nine original research essays collected here cover the social history of learning disability from the Middle Ages through the establishment of the National Health Service. They will not only contribute to a neglected field of social and medical history but also illuminate and inform current debates. The information presented here will have a profound impact on how professionals in mental health, psychiatric nursing, social work and disabled rights understand learning disability and society's responses to it over the course of history.