Associative rings that possess Morita dualities or self- dualities form the object of this book. They are assumed to have an identity and modules are assumed unitary. The book sets out to give an extensive introduction to thisclass of rings, covering artinian rings, ring extensions, Azuma- ya's exact rings, and more. Among the interesting results presented are a characterization of duality via linear com- pactness, ring extensions with dualities, and exact rings. Some basic knowledge of rings and modules is expected of the reader.
Associative rings that possess Morita dualities or self- dualities form the object of this book. They are assumed to have an identity and modules are assumed unitary. The book sets out to give an extensive introduction to thisclass of rings, covering artinian rings, ring extensions, Azuma- ya's exact rings, and more. Among the interesting results presented are a characterization of duality via linear com- pactness, ring extensions with dualities, and exact rings. Some basic knowledge of rings and modules is expected of the reader.
This book presents a hybrid static-dynamic approach for efficient performance analysis of parallel applications on HPC systems. Performance analysis is essential to finding performance bottlenecks and understanding the performance behaviors of parallel applications on HPC systems. However, current performance analysis techniques usually incur significant overhead. Our book introduces a series of approaches for lightweight performance analysis. We combine static and dynamic analysis to reduce the overhead of performance analysis. Based on this hybrid static-dynamic approach, we then propose several innovative techniques for various performance analysis scenarios, including communication analysis, memory analysis, noise analysis, computation analysis, and scalability analysis. Through these specific performance analysis techniques, we convey to readers the idea of using static analysis to support dynamic analysis. To gain the most from the book, readers should have a basic grasp of parallel computing, computer architecture, and compilation techniques.
This book focuses on 3D printing and molding/ copying technologies and approaches, which innovatively proposes the concept of polymer 3D copying technology. It introduces the two technologies of polymer 3D printing and 3D copying by analogy and elaborates the core principles and processes of polymer 3D copying technology, the composition, basic parameters and structure design of polymer 3D copying machines, precision control methods, defect generation mechanism and solutions of polymer 3D copying products, and also discussed the future development of polymer 3D copying technology. The novel concept of 3D copying is one of the major features of the book, which is particularly suited for readers who are interested in rapid prototyping and molding. The book is based on both traditional and new knowledges, with novel content and concept, focusing on both principles and engineering practice. It systematically reflects the content and application of polymer 3D printing and 3D copying technology, which can benefit researchers, engineers, and students of related majors engaged in the fields of polymer processing, rapid prototyping, 3D printing and molding/ copying, etc.
A state-of-the-art discussion of modern grid inverters In Control and Filter Design of Single Phase Grid-Connected Converters, a team of distinguished researchers delivers a robust and authoritative treatment of critical distributed power generation technologies, grid-connected inverter designs, and renewable energy utilization. The book includes detailed explanations of the system structure of distributed generation (DG)-grid interface converters and the methods of controlling DG-grid interface voltage source converters (VSCs) with high-order filters. The authors also explore the challenges and obstacles associated with modern power electronic grid-connected inverter control technology and introduce some designed systems that meet these challenges, like the grid impedance canceller. Readers will discover demonstrations of basic principles, guidelines, examples, and design and simulation programs for grid-connected inverters based on LCL/LLCL technology. They will also find: A thorough introduction to the architectures of DG-grid interfacing converters, including the challenges of controlling DG-grid interfacing VSCs with high-order filters Comprehensive explorations of the control structure and modulation techniques of single-phase grid-tied inverters Practical discussions of an LLCL power filter for single-phase grid-tied inverters Fulsome treatments of design methods of passive damping for LCL/LLCL-filtered grid-tied inverters Perfect for researchers, postgraduate students, and senior level undergraduate students of electrical engineering, Control and Filter Design of Single Phase Grid-Connected Converters will also benefit research & development engineers involved with the design and manufacture of power electronic inverters.
Índice: Function spaces and their properties; Introduction to finite difference and finite element approximations; Variational inequalities; Constitutive relations in solid mechanics; Background on variational and numerical analysis in contact mechanics; Contact problems in elasticity; Bilateral contact with slip dependent friction; Frictional contact with normal compliance; Frictional contact with normal damped response; Other viscoelastic contact problems; Frictionless contact with dissipative potential; Frictionless contact between two viscoplastic bodies; Bilateral contact with Tresca's friction law; Other viscoelastic contact problems; Bibliography; Index.
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