Wei Ren – författare

Distributed Coordination of Multi-agent Networks introduces problems, models, and issues such as collective periodic motion coordination, collective tracking with a dynamic leader, and containment control with multiple leaders, and explores ideas for their solution. Solving these problems extends the existing application domains of multi-agent networks; for example, collective periodic motion coordination is appropriate for applications involving repetitive movements, collective tracking guarantees tracking of a dynamic leader by multiple followers in the presence of reduced interaction and partial measurements, and containment control enables maneuvering of multiple followers by multiple leaders.

This Element introduces the areas that second language (L2) pragmatics research has investigated. It begins with a theme-based review of the field with respect to L2 pragmatics learning, teaching, and assessing. The section on pragmatics learning examines studies on learners' pragmatic production and perception, and analyzes research modalities in this field. The section on pragmatics teaching examines the effects of and different approaches to L2 pragmatics instruction; and the section on pragmatics assessing examines the aspects involved in testing learners' pragmatic competence, and studies on issues related to validity and rating in pragmatics assessing. The Element then analyzes studies exploring learners' cognitive processes during pragmatic performance, and case studies are provided to showcase two ongoing projects, one investigating advanced learners' self-praise on social media and the other investigating lingua franca pragmatics among children. Finally, the Element offers some topics and questions for future research in L2 pragmatics.

Distributed Coordination of Multi-agent Networks introduces problems, models, and issues such as collective periodic motion coordination, collective tracking with a dynamic leader, and containment control with multiple leaders, and explores ideas for their solution. Solving these problems extends the existing application domains of multi-agent networks; for example, collective periodic motion coordination is appropriate for applications involving repetitive movements, collective tracking guarantees tracking of a dynamic leader by multiple followers in the presence of reduced interaction and partial measurements, and containment control enables maneuvering of multiple followers by multiple leaders.

As big data becomes increasingly pervasive and cloud computing utilization becomes the norm, the security and privacy of our systems and data becomes more critical with emerging security and privacy threats and challenges. This book presents a comprehensive view on how to advance security and privacy in big data, cloud computing, and their applications. Topics include cryptographic tools, SDN security, big data security in IoT, privacy preserving in big data, security architecture based on cyber kill chain, privacy-aware digital forensics, trustworthy computing, privacy verification based on machine learning, and chaos-based communication systems. This book is an essential reading for networking, computing, and communications professionals, researchers, students and engineers, working with big data and cloud computing.

Information consensus guarantees that robot vehicles sharing information over a network topology have a consistent view of information critical to the coordination task. Assuming only neighbor-neighbor interaction between vehicles, this monograph develops distributed consensus strategies designed to ensure that the information states of all vehicles in a network converge to a common value. This approach strengthens the team, minimizing power consumption and the effects of range and other restrictions.The monograph covers introductory, theoretical and experimental material, featuring - an overview of the use of consensus algorithms in cooperative control; - consensus algorithms in single- and double-integrator, and rigid-body-attitude dynamics; - rendezvous and axial alignment, formation control, deep-space formation flying, fire monitoring and surveillance.Six appendices cover material drawn from graph, matrix, linear and nonlinear systems theories.

Information consensus guarantees that robot vehicles sharing information over a network topology have a consistent view of information critical to the coordination task. Assuming only neighbor-neighbor interaction between vehicles, this monograph develops distributed consensus strategies designed to ensure that the information states of all vehicles in a network converge to a common value. This approach strengthens the team, minimizing power consumption and the effects of range and other restrictions.The monograph covers introductory, theoretical and experimental material, featuring - an overview of the use of consensus algorithms in cooperative control; - consensus algorithms in single- and double-integrator, and rigid-body-attitude dynamics; - rendezvous and axial alignment, formation control, deep-space formation flying, fire monitoring and surveillance.Six appendices cover material drawn from graph, matrix, linear and nonlinear systems theories.

The book assists the implementation of such applications by promoting the ability of multi-agent systems to track — using local communication only — the mean value of signals of interest, even when these change rapidly with time and when no individual agent has direct access to the average signal across the whole team;

The book assists the implementation of such applications by promoting the ability of multi-agent systems to track — using local communication only — the mean value of signals of interest, even when these change rapidly with time and when no individual agent has direct access to the average signal across the whole team;

Pragmatic competence plays a key role in intercultural communication, particularly for students studying in a target community. This book investigates the effect of study abroad on second language learners’ productive and receptive pragmatic competences, as well as their cognitive processes during speech act production. It employs a variety of research instruments, both quantitative and qualitative, to explore learners’ pragmatic development over one year. The inclusion of a control group is a methodological strength of the longitudinal study, many such studies often not including a control group. In addition, the study longitudinally examines learners’ cognitive processes during study abroad with innovative and insightful analyses. The book makes an important contribution to second language pragmatics with regard to developmental changes in both speech act production and perception during such processes.

This book tells the story of the Mount Songshan area architecture in simple terms, while also providing detailed information on the history of Buddhist architecture.