Jie Wang

Comprehensive resource on the fundamentals, recent research developments, and applications of triboelectric nanogenerators (TENGs) Triboelectric Nanogenerators delivers a comprehensive overview of a lightweight, low cost, and high-efficiency sustainable mechanical energy harvesting technique that draws from the ambient environment and has high output and extremely flexible structural designs. The book starts with an introduction on triboelectric nanogenerator technology, then continues to discuss the latest fundamental studies about TENGs, including models of triboelectric effect, the discharge effect, and standardized evaluation. The next part explains new output performance promotion of TENGs for power generation applications, including output promotion through multiple methods, as well as power management and effective energy storage. The last part explores new concepts inspired by the field of TENGs, including applications in sensing, actuation, data science, artificial intelligence (AI), the Internet of Things (IoT), and smart cities. Written by a team of highly qualified academics with significant research experience in the field, Triboelectric Nanogenerators includes information on: Triboelectric charge generation and discharge, highlighting how electrostatic energy is often wastedEnergy potential of TENGs in comparison to other sources such as lithium-ion batteries and other types of batteriesMethods to promote and configure output performance, such as through gas environments, liquid-solid interfaces, and electromechanical structuresHigh-voltage output from TENGs and its potential for new applications in areas such as breakdown charge triggering, electrospraying, field emissions, and others Triboelectric Nanogenerators is an essential reference for scientists, engineers, students, and professionals in related fields seeking to understand this exciting energy harvesting technique and gain all of the knowledge needed to help further progress in the field.

This book highlights stories of the most important 13 ground-based observatories and 14 space probes in human history, leading readers through each significant step of human’s astronomical observation journey. From the earliest Hooker Telescope and the Mount Wilson Observatory, to the latest FAST, JWST and DAMPE, the targets of observation range from large systems such as the solar system, the milky way, and the universe, to individual planets such as Jupiter, Saturn, Mars, and the remote stars, and to the matters that reveal the origin of the universe, such as dark matter and cosmic background radiation. The book presents the mysteries of the sky in an easily readable manner suitable for audiences of all ages who are curious about the universe and thirsty to know all the important discoveries in the past century, especially the last decade. With carefully-selected contents, the book weaves together a series of tales to make the convoluted history of astronomical observation full offun and excitement, ensuring that readers never lose interest during reading.

This book offers a systematic view of data services in heterogeneous wireless networks, from the perspectives of cause, governing rules, and impact of data’s mobility on such networks. Specifically, it covers application requirements break-down, network modeling, performance analysis and evaluation by examining mobile data dynamics that are particularly important to data service provisioning. Additionally, application prospects such as information dissemination, fog computing, Internet-of-Things and dynamic spectrum access are discussed on the basis of these dynamics. Theoretic analysis, example illustrations, and algorithms are also presented to provide a concise coverage of this important area of networking. Mobile data dynamics refers to the stochastic processes of information, geographical coverage and spectrum, which accompanies the movements of data across wireless networks. Owing to the challenge raised by a high level of network heterogeneity, and the innate requirement on scalability, knowledge on the evolution of mobile data dynamics is essential to the design and deployment of emerging data services and applications, such as Internet-of-Things, data/task offloading and edge-based machine learning/inference. This book is designed for researchers and advanced-level students in the field of wireless networking and edge computing, who seek to understand the models and evolutions of mobile data dynamics for future edge applications. Practitioners, who specialize in the design, operation and maintenance of edge computing systems will also want to purchase this book as a reference.

Many applications, including computer vision, computer arithmetic, deep learning, entanglement in quantum information, graph theory and energy networks, can be successfully tackled within the framework of polynomial optimization, an emerging field with growing research efforts in the last two decades. One key advantage of these techniques is their ability to model a wide range of problems using optimization formulations. Polynomial optimization heavily relies on the moment-sums of squares (moment-SOS) approach proposed by Lasserre, which provides certificates for positive polynomials. On the practical side, however, there is 'no free lunch' and such optimization methods usually encompass severe scalability issues. Fortunately, for many applications, including the ones formerly mentioned, we can look at the problem in the eyes and exploit the inherent data structure arising from the cost and constraints describing the problem. This book presents several research efforts to resolve this scientific challenge with important computational implications. It provides the development of alternative optimization schemes that scale well in terms of computational complexity, at least in some identified class of problems. It also features a unified modeling framework to handle a wide range of applications involving both commutative and noncommutative variables, and to solve concretely large-scale instances. Readers will find a practical section dedicated to the use of available open-source software libraries. This interdisciplinary monograph is essential reading for students, researchers and professionals interested in solving optimization problems with polynomial input data.

This book presents the dynamic modeling and attitude control of flexible spacecraft with time-varying parameters. The dynamic characteristics, vibration control methods and attitude stabilization methods for spacecraft are systematically studied in respects of the theoretical modeling, numerical simulation and the ground experiment. Three active control theories in complex mode space are presented for flexible space structures. Optimal slew strategies based on variable amplitudes input shaping methods and coupling control methods are proposed for stabilization of flexible spacecraft. The research provides an important way to solve the problem of high-precision attitude control of flexible spacecraft with time-varying parameters. This book is appropriate for the researchers who focus on the multi-body dynamics, attitude and vibration control of flexible spacecraft.

This book presents the dynamic modeling and attitude control of flexible spacecraft with time-varying parameters. The dynamic characteristics, vibration control methods and attitude stabilization methods for spacecraft are systematically studied in respects of the theoretical modeling, numerical simulation and the ground experiment. Three active control theories in complex mode space are presented for flexible space structures. Optimal slew strategies based on variable amplitudes input shaping methods and coupling control methods are proposed for stabilization of flexible spacecraft. The research provides an important way to solve the problem of high-precision attitude control of flexible spacecraft with time-varying parameters. This book is appropriate for the researchers who focus on the multi-body dynamics, attitude and vibration control of flexible spacecraft.

This book employs a comparative approach to comprehensively discuss hosting ISPs’ (Internet Service Providers') responsibilities for copyright infringement in the US, EU and China. In particular, it details how the current responsibility rules should be interpreted or revised so as to provide hosting ISPs maximum freedom to operate in these jurisdictions. In addition to examining relevant state regulations, the book assesses self-regulation norms agreed upon between copyright owners and hosting ISPs, and concludes that self-regulation is better suited to preserving hosting ISPs’ freedom to operate. The results of this study will be interesting for a broad readership, including academics and practitioners whose work involves hosting ISPs’ copyright responsibilities.

This book employs a comparative approach to comprehensively discuss hosting ISPs’ (Internet Service Providers') responsibilities for copyright infringement in the US, EU and China. In particular, it details how the current responsibility rules should be interpreted or revised so as to provide hosting ISPs maximum freedom to operate in these jurisdictions. In addition to examining relevant state regulations, the book assesses self-regulation norms agreed upon between copyright owners and hosting ISPs, and concludes that self-regulation is better suited to preserving hosting ISPs’ freedom to operate. The results of this study will be interesting for a broad readership, including academics and practitioners whose work involves hosting ISPs’ copyright responsibilities.

Introductory textbook in the important area of network security for undergraduate and graduate students Comprehensively covers fundamental concepts with newer topics such as electronic cash, bit-coin, P2P, SHA-3, E-voting, and Zigbee securityFully updated to reflect new developments in network securityIntroduces a chapter on Cloud security, a very popular and essential topicUses everyday examples that most computer users experience to illustrate important principles and mechanismsFeatures a companion website with Powerpoint slides for lectures and solution manuals to selected exercise problems, available at http://www.cs.uml.edu/~wang/NetSec