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Digital systems, such as phones, computers and PDAs, place continuous demands on our cognitive and perceptual systems. They offer information and interaction opportunities well above our processing abilities, and often interrupt our activity. Appropriate allocation of attention is one of the key factors determining the success of creative activities, learning, collaboration, and many other human pursuits. This book presents research related to human attention in digital environments. Original contributions by leading researchers cover the conceptual framework of research aimed at modelling and supporting human attentional processes, the theoretical and software tools currently available, and various application areas. The authors explore the idea tha...

This book is a practical tool for Java^TM programmers. It provides the necessary information for finding, evaluating and selecting an application framework for programming needs. It explains in plain language the benefits of frameworks and component technologies, specifically in relation to web application development. The book is unique: it does not focus on any specific technology, and uses examples from several different frameworks to explain the underlying principles. As the market for web applications begins its second wave, this volume provides the critical information for developers to make the transition into componentized framework-based development, keeping them ahead in an increasingly competitive market....

There are many algorithm texts that provide lots of well-polished code and proofs of correctness. This book is not one of them. Instead, this book presents insights, notations, and analogies to help the novice describe and think about algorithms like an expert. By looking at both the big picture and easy step-by-step methods for developing algorithms, the author helps students avoid the common pitfalls. He stresses paradigms such as loop invariants and recursion to unify a huge range of algorithms into a few meta-algorithms. Part of the goal is to teach the students to think abstractly. Without getting bogged with formal proofs, the book fosters a deeper understanding of how and why each algorithm works. These insights are presented in a slow and cle...