This book approaches its subject matter in a way that provides Lyapunov function analysis and event-triggered design methods for switched dynamic systems in terms of sampled-data control, hysteresis switching control, and fault-tolerant control. This book presents several novel design methods on event-triggered control of switched linear systems, in which the events inclusively consist of not only switching itself but events occurring as the switched systems evolve. The features of our approaches lie in threefold: i) In the framework of sampled-data control, a bond between the sampling period and the average dwell time of the asynchronous switched linear neutral systems is revealed, with which stabilization conditions are derived for periodic sampling and event-triggered sampling mechanisms, respectively. ii) New event-triggered control strategies are proposed for switched linear systems and switched delay systems including switched neutral systems. The Zeno phenomenon can be excluded easily since the constant threshold can guarantee the existence of minimum positive lower bound between two continuous sampling intervals. iii). Two new fault-tolerant control methods are presented for switched cascade systems, with structural uncertainties existing in both system matrices and input matrices of the linear subsystems, by using the average dwell-time techniques. The proposed control design works on both the switched systems with actuator faults and its nominal systems (i.e., without actuator faults) without necessarily changing any structures and/or parameters of the proposed controllers. This book presents several systematical analysis and design methods for event-triggered control of switched systems in terms of the Lyapunov-based stability. It is of great significance to theoretical research and practical applications for switched systems. The book provides a unified framework of sampled-data control, including periodic sampled-data control and event-triggered control, and fault-tolerant control of switched systems. It serves as a useful book for researchers and graduate students who are interested in knowing the state of the art of analysis and synthesis of switched systems. In addition, it is also a useful source of up-to-date design methods for researchers who study switched dynamic systems and graduate students of control theory and control engineering.

This book presents several novel constructive methodologies for global stabilization and H-infinity control in switched dynamic systems by using the systems' structure information. The main features of these new approaches are twofold: i) Novel Lyapunov functions are constructed and new switching strategies are designed to guarantee global finite-time stabilization of the closed-loop switched dynamic systems,while ii) without posing any internal stability requirements on subsystems, the standard H-infinity control problem of the switched dynamic systems is solved by means of dwell-time switching techniques. Systematically presenting constructive methods for analyzing and synthesizing switched systems, the content is of great significance to theoretical research and practical applications involving switched systems alike. The book provides a unified framework for stability analysis, stabilization and H-infinity control of switched systems, making it a valuable resource for researchers and graduate students who want to learn about the state of the art in the analysis and synthesis of switched systems, as well as recent advances in switched linear systems. In addition, it offers a wealth of cutting-edge constructive methods and algorithm designs for researchers who work with switched dynamic systems and graduate students of control theory and control engineering.

This book examines how emerging forms of citizenship are shaped by young people in digital spaces as way of making sense of contemporary Chinese society, forming new identities, and negotiating social and political participation. By focusing on Chinese young adults' everyday online practices, the book offers a unique treatment of the topic of young people and the Chinese Internet that navigates between the dominant focus on censorship on the one hand and protest and politicized action on the other. The book brings the focus of research from highly visible or spectacular forms of collectivity, belonging, and identification exhibited in young people's online practices to young people's everyday social and cultural engagement through new media. It brings new insights by understanding the meanings of young people's mundane and everyday online engagement for their citizenship learning, identity performance, and their formation of political subjectivity. Readers will gain insights into citizenship in China, and young people and the Chinese Internet.

This book approaches its subject matter in a way that provides Lyapunov function analysis and event-triggered design methods for switched dynamic systems in terms of sampled-data control, hysteresis switching control, and fault-tolerant control. This book presents several novel design methods on event-triggered control of switched linear systems, in which the events inclusively consist of not only switching itself but events occurring as the switched systems evolve. The features of our approaches lie in threefold: i) In the framework of sampled-data control, a bond between the sampling period and the average dwell time of the asynchronous switched linear neutral systems is revealed, with which stabilization conditions are derived for periodic sampling and event-triggered sampling mechanisms, respectively. ii) New event-triggered control strategies are proposed for switched linear systems and switched delay systems including switched neutral systems. The Zeno phenomenon can be excluded easily since the constant threshold can guarantee the existence of minimum positive lower bound between two continuous sampling intervals. iii). Two new fault-tolerant control methods are presented for switched cascade systems, with structural uncertainties existing in both system matrices and input matrices of the linear subsystems, by using the average dwell-time techniques. The proposed control design works on both the switched systems with actuator faults and its nominal systems (i.e., without actuator faults) without necessarily changing any structures and/or parameters of the proposed controllers. This book presents several systematical analysis and design methods for event-triggered control of switched systems in terms of the Lyapunov-based stability. It is of great significance to theoretical research and practical applications for switched systems. The book provides a unified framework of sampled-data control, including periodic sampled-data control and event-triggered control, and fault-tolerant control of switched systems. It serves as a useful book for researchers and graduate students who are interested in knowing the state of the art of analysis and synthesis of switched systems. In addition, it is also a useful source of up-to-date design methods for researchers who study switched dynamic systems and graduate students of control theory and control engineering.

This book presents several novel constructive methodologies for global stabilization and H-infinity control in switched dynamic systems by using the systems' structure information. The main features of these new approaches are twofold: i) Novel Lyapunov functions are constructed and new switching strategies are designed to guarantee global finite-time stabilization of the closed-loop switched dynamic systems,while ii) without posing any internal stability requirements on subsystems, the standard H-infinity control problem of the switched dynamic systems is solved by means of dwell-time switching techniques. Systematically presenting constructive methods for analyzing and synthesizing switched systems, the content is of great significance to theoretical research and practical applications involving switched systems alike. The book provides a unified framework for stability analysis, stabilization and H-infinity control of switched systems, making it a valuable resource for researchers and graduate students who want to learn about the state of the art in the analysis and synthesis of switched systems, as well as recent advances in switched linear systems. In addition, it offers a wealth of cutting-edge constructive methods and algorithm designs for researchers who work with switched dynamic systems and graduate students of control theory and control engineering.

This book provides a series of systematic theoretical results and numerical solution algorithms for dynamic optimization problems of switched systems within infinite-dimensional inequality path constraints. Dynamic optimization of path-constrained switched systems is a challenging task due to the complexity from seeking the best combinatorial optimization among the system input, switch times and switching sequences. Meanwhile, to ensure safety and guarantee product quality, path constraints are required to be rigorously satisfied (i.e., at an infinite number of time points) within a finite number of iterations. Several novel methodologies are presented by using dynamic optimization and semi-infinite programming techniques. The core advantages of our new approaches lie in two folds: i) The system input, switch times and the switching sequence can be optimized simultaneously. ii) The proposed algorithms terminate within finite iterations while coming with a certification of feasibility for the path constraints. In this book, first, we provide brief surveys on dynamic optimization of path-constrained systems and switched systems. For switched systems with a fixed switching sequence, we propose a bi-level algorithm, in which the input is optimized at the inner level, and the switch times are updated at the outer level by using the gradient information of the optimal value function calculated at the optimal input. We then propose an efficient single-level algorithm by optimizing the input and switch times simultaneously, which greatly reduces the number of nonlinear programs and the computational burden. For switched systems with free switching sequences, we propose a solution framework for dynamic optimization of path-constrained switched systems by employing the variant 2 of generalized Benders decomposition technique. In this framework, we adopt two different system formulations in the primal and master problem construction and explicitly characterize the switching sequences by introducing a binary variable. Finally, we propose a multi-objective dynamic optimization algorithm for locating approximated local Pareto solutions and quantitatively analyze the approximation optimality of the obtained solutions. This book provides a unified framework of dynamic optimization of path-constrained switched systems. It can therefore serve as a useful book for researchers and graduate students who are interested in knowing the state of the art of dynamic optimization of switched systems, as well as recent advances in path-constrained optimization problems. It is a useful source of up-to-date optimization methods and algorithms for researchers who study switched systems and graduate students of control theory and control engineering. In addition, it is also a useful source for engineers who work in the control and optimization fields such as robotics, chemical engineering and industrial processes.

Climate change is a huge challenge to humanity in the 21th century. In view of China's recent pledge to the international community to peak carbon emissions before 2030 and achieve carbon neutrality by 2060, this book examines climate mitigation and adaptation efforts in China through the prism of the steel sector, and it does so from three interrelated perspectives, i.e., policy, technology, and market. The book argues that in developing the country's strategy towards green growth, over the years there has been a positive and interactive relationship between China's international commitments and domestic agenda setting in mitigation and adaptation to the impact of climate change. To illustrate China's efforts, two special areas, i.e., carbon capture, utilization and storage (CCUS) and emissions-trading system (ETS), have received focused examination. Along the spectrum of low-carbon, zero-carbon, and negative-carbon strategies, this study ends with a simulation model which outlines different policy scenarios, challenges, and uncertainties, as China moves further on, trying to achieve carbon neutrality in 2060. The book will be of interest to scholars, policy-makers, and business executives who want to understand China's growing role in the world.

This book examines how emerging forms of citizenship are shaped by young people in digital spaces as way of making sense of contemporary Chinese society, forming new identities, and negotiating social and political participation. By focusing on Chinese young adults' everyday online practices, the book offers a unique treatment of the topic of young people and the Chinese Internet that navigates between the dominant focus on censorship on the one hand and protest and politicized action on the other. The book brings the focus of research from highly visible or spectacular forms of collectivity, belonging, and identification exhibited in young people's online practices to young people's everyday social and cultural engagement through new media. It brings new insights by understanding the meanings of young people's mundane and everyday online engagement for their citizenship learning, identity performance, and their formation of political subjectivity. Readers will gain insights into citizenship in China, and young people and the Chinese Internet.

Climate change is a huge challenge to humanity in the 21th century. In view of China's recent pledge to the international community to peak carbon emissions before 2030 and achieve carbon neutrality by 2060, this book examines climate mitigation and adaptation efforts in China through the prism of the steel sector, and it does so from three interrelated perspectives, i.e., policy, technology, and market. The book argues that in developing the country's strategy towards green growth, over the years there has been a positive and interactive relationship between China's international commitments and domestic agenda setting in mitigation and adaptation to the impact of climate change. To illustrate China's efforts, two special areas, i.e., carbon capture, utilization and storage (CCUS) and emissions-trading system (ETS), have received focused examination. Along the spectrum of low-carbon, zero-carbon, and negative-carbon strategies, this study ends with a simulation model which outlines different policy scenarios, challenges, and uncertainties, as China moves further on, trying to achieve carbon neutrality in 2060. The book will be of interest to scholars, policy-makers, and business executives who want to understand China's growing role in the world.