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How do parents and children care for each other when they are separated because of migration? The way in which transnational families maintain long-distance relationships has been revolutionised by the emergence of new media such as email, instant messaging, social networking sites, webcam and texting. A migrant mother can now call and text her left-behind children several times a day, peruse social networking sites and leave the webcam for 12 hours achieving a sense of co-presence. Drawing on a long-term ethnographic study of prolonged separation between migrant mothers and their children who remain in the Philippines, this book develops groundbreaking theory for understanding both new media and the nature of mediated relationships. It brings together the perspectives of both the mothers and children and shows how the very nature of family relationships is changing. New media, understood as an emerging environment of polymedia, have become integral to the way family relationships are enacted and experienced. The theory of polymedia extends beyond the poignant case study and is developed as a major contribution for understanding the interconnections between digital media and interpersonal relationships.

This practical book provides everything you need to know about the Extensible Messaging and Presence Protocol (Xmpp). This open technology for real-time communication is used in many diverse applications such as instant messaging, Voice over Ip, real-time collaboration, social networking, microblogging, lightweight middleware, cloud computing, and more. Xmpp: The Definitive Guide walks you through the thought processes and design decisions involved in building a complete Xmpp-enabled application, and adding real-time interfaces to existing applications. You'll not only learn simple yet powerful Xmpp tools, but you'll also discover, through real-world developer stories, how common Xmpp "building blocks" can help solve particular classes of problems. With this book, you will: Learn the basics of Xmpp technologies, including architectural issues, addressing, and communication primitives Understand the terminology of Xmpp and learn about the wealth of Xmpp servers, clients, and code libraries Become familiar with the Xmpp concepts and services you need to solve common problems Construct a complete business application or real-time service with Xmpp Every day, more software developers and service providers are using Xmpp for real-time applications, and with the help of Xmpp: The Definitive Guide, you can, too.