This book constitutes the refereed proceedings of the 12 European Conference on Wireless Sensor Networks, EWSN 2015, held in Porto, Portugal, in February 2015. The 14 full papers and 9 short papers presented were carefully reviewed and selected from 85 submissions. They cover a wide range of topics grouped into five sessions: services and applications, mobility and delay-tolerance, routing and data dissemination, and human-centric sensing.

This book outlines the most important characteristics of IEEE 802.15.4 and ZigBee and how they can be used to engineer Wireless Sensor Network (WSN) systems and applications, with a particular focus on Quality-of-Service (QoS) aspects. It starts by providing a snapshot of the most relevant features of these two protocols, identifying some gaps in the standard specifications. Then it describes several state-of-the-art open-source implementations, models and tools that have been designed by the authors and have been widely used by the international community. The book also outlines the fundamental performance limits of IEEE 802.15.4/ZigBee networks, based on well-sustained analytical, simulation and experimental models, including how to dimension such networks to optimize delay/energy trade-offs.

This book focuses on the design of a 3rd Order CT- M where the integrator stages of the filter are implemented with Bipolar-Junction Transistors (BJT) differential pairs. These circuits are fully analyzed and the design method is carefully explained. The design method is validated through experimental measurements of several prototype circuits.

The profound changes that we are experiencing at the political, environmental, economic, social, and cultural levels of our "postmodern" society pose immense challenges to education. In order to empower students to analyse, reflect, and take action for a sustainable world, the learning and educational process must be experienced in the context of citizenship; that is, it must be designed, planned, and implemented having global sustainability as a framework, thus developing societal awareness, values, and principles. Teaching and Learning Practices That Promote Sustainable Development and Active Citizenship is an essential research book that provides comprehensive research on education as a fundamental factor in empowering citizens to understand and act on the multiple risks and challenges to the sustainability of our society and world. Highlighting a range of critical learning strategies such as global and critical education, development education, and transformational education, among others, this book is ideal for academicians, education professionals, researchers, policymakers, and students.

The profound changes that we are experiencing at the political, environmental, economic, social, and cultural levels of our "postmodern" society pose immense challenges to education. In order to empower students to analyse, reflect, and take action for a sustainable world, the learning and educational process must be experienced in the context of citizenship; that is, it must be designed, planned, and implemented having global sustainability as a framework, thus developing societal awareness, values, and principles. Teaching and Learning Practices That Promote Sustainable Development and Active Citizenship is an essential research book that provides comprehensive research on education as a fundamental factor in empowering citizens to understand and act on the multiple risks and challenges to the sustainability of our society and world. Highlighting a range of critical learning strategies such as global and critical education, development education, and transformational education, among others, this book is ideal for academicians, education professionals, researchers, policymakers, and students.