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Liu Y Antenna Radar Cross Section Theory and Design 2025

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Name: Liu Y Antenna Radar Cross Section Theory and Design 2025
Format: pdf
Size: 26.95 MB

Book:

Title: Antenna Radar Cross Section: Theory and Design
Author: Ying Liu · Yongtao Jia · Shuxi Gong
Language: polski
Year: 2025
Subjects: Science & Technology, Engineering, Technology, Telecommunications, Telecommunications Technology, Telecommunication
Publisher: Springer-Verlag New York, LLC
ISBN: 9789819612260
Total pages: 263

Description:

This is the first book to focus specifically on antenna RCS reduction theory and design approaches. It covers both principles and engineering practice, and provides an in-depth study of a number of important topics, including fundamental theory, antenna and array analysis models, the rapid numerical computation method, and various low-RCS antenna design methods. The comprehensive and systematic discussion of practical issues in antenna RCS reduction makes it an ideal resource for readers interested in practical solutions to antenna stealth, particularly researchers, engineers and graduate students in the fields of microwave engineering, electrical and electronic engineering, and telecommunications engineering.

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Liu X Nonlinear Sound Waves in Solids 2025

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Name: Liu X Nonlinear Sound Waves in Solids 2025
Format: pdf
Size: 28.94 MB

Book:

Title: Nonlinear Sound Waves in Solids
Author: Xiaozhou Liu
Language: polski
Year: 2025
Subjects: Science & Technology, Engineering, Engineering Technology, Acoustics & Sound Technology
Publisher: Springer-Verlag New York, LLC
ISBN: 9789819652532
Total pages: 392

Description:

This book highlights the fundamental principles and analytical methods of nonlinear acoustics in solids, with a focus on the theories and applications of nonlinear acoustics in ultrasonic non-destructive testing and metamaterials. The text is designed to provide readers with a deep understanding of how nonlinear acoustic phenomena manifest in various material contexts, from crystalline structures to complex composites. Suitable for readers in the fields of acoustics, materials science, and engineering, this book can advance the development of nonlinear acoustics theory and promote its applications in non-destructive testing, materials sciences, and related areas.

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Liu X Guaranteed Computational Methods for Self-Adjoint Diff Eigenvalue 2024

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Name: Liu X Guaranteed Computational Methods for Self-Adjoint Diff Eigenvalue 2024
Format: pdf
Size: 3.9 MB

Book:

Title: Guaranteed Computational Methods for Self-Adjoint Differential Eigenvalue Problems
Author: Xuefeng Liu
Language: angielski
Year: 2024
Subjects: Science & Technology, Mathematics, Mathematical Analysis, Mathematical Analysis – General & Miscellaneous
Publisher: Springer-Verlag New York, LLC
ISBN: 9789819735778
Total pages: 139

Description:

This monograph presents a study of newly developed guaranteed computational methodologies for eigenvalue problems of self-adjoint differential operators. It focuses on deriving explicit lower and upper bounds for eigenvalues, as well as explicit estimations for eigenfunction approximations. Such explicit error estimations rely on the finite element method (FEM) along with a new theory of explicit quantitative error estimation, diverging from traditional studies that primarily focus on qualitative results.
To achieve quantitative error estimation, the monograph begins with an extensive analysis of the hypercircle method, that is, the Prager-Synge theorem. It introduces a novel a priori error estimation technique based on the hypercircle method. This facilitates the explicit estimation of Galerkin projection errors for equations such as Poisson’s and Stokes’, which are crucial for obtaining lower eigenvalue bounds via conforming FEMs.
A thorough exploration of the fundamental theory of projection-based explicit lower eigenvalue bounds under a general setting of eigenvalue problems is also offered. This theory is extensively detailed when applied to model eigenvalue problems associated with the Laplace, biharmonic, Stokes, and Steklov differential operators, which are solved by either conforming or non-conforming FEMs.
Moreover, there is a detailed discussion on the Lehmann-Goerisch theorem for the purpose of high-precision eigenvalue bounds, showing its relationship with previously established theorems, such as Lehmann-Maehly’s method and Kato’s bound. The implementation details of this theorem with FEMs, a topic rarely covered in existing literature, are also clarified.
Lastly, the monograph introduces three new algorithms to estimate eigenfunction approximation errors, revealing the potency of classical theorems. Algorithm I extends Birkhoff’s result that works for simple eigenvalues to handle clustered eigenvalues, while Algorithm II generalizes the Davis-Kahan theorem, initially designed for strongly formulated eigenvalue problems, to address weakly formulated eigenvalue problems. Algorithm III utilizes the explicit Galerkin projection error estimation to efficiently handle Galerkin projection-based approximations.

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Liu P Advanced Numerical Models For Simulating Tsunami Waves And Runup 2008

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Name: Liu P Advanced Numerical Models For Simulating Tsunami Waves And Runup 2008
Format: pdf
Size: 19.61 MB

Book:

Title: Advanced Numerical Models For Simulating Tsunami Waves and Runup Volume-10 (340 Pages)
Author: Philip L.-F. Liu, Harry Yeh and Costas Synolakis
Language: polski
Year: 2005
Subjects: N/A
Publisher: Wydawnictwo: Wydawnictwo WNT
ISBN: 8320431441
Total pages: 341

Description:

W książce omówiono zagadnienia związane z analizą wytrzymałościową materiałów ceramicznych na przykładzie ceramiki A1203 i kompozytu A1203 – Zr02. Analizy wykonano za pomocą numerycznej metody elementów skończonych, zastosowanej do mikrostruktury rozważanego materiału. W przystępny sposób opisano zasady tworzenia modeli numerycznych, uwzględniających ziarnistą budowę mikrostruktury. Podano również sposób oceny wiarygodności modeli za pomocą badań eksperymentalnych, a także metody analizy i interpretacji otrzymanych wyników. Przedstawiona w książce metodyka ma charakter ogólny. Może być stosowana w badaniach zagadnień wytrzymałościowych mikrostruktury materiałów, w których występują podobne zjawiska fizyczne jak w przypadku badanych ceramik.

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Liu H Embodied Multi-agent Systems Perception, Action and Learning 2025

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Name: Liu H Embodied Multi-agent Systems Perception, Action and Learning 2025
Format: pdf
Size: 19.72 MB

Book:

Title: Embodied Multi-Agent Systems
Author: Huaping Liu, Xinzhu Liu, Kangyao Huang, Di Guo
Language: angielski
Year: 2025
Subjects: Computers, Science & Technology, Engineering, Technology, Artificial Intelligence (AI), Robotics & Artificial Intelligence, Artificial Intelligence – General
Publisher: Springer-Verlag New York, LLC
ISBN: 9789819658718
Total pages: 246

Description:

In recent years, embodied multi-agent systems, including multi-robots, have emerged as essential solution for demanding tasks such as search and rescue, environmental monitoring, and space exploration. Effective collaboration among these agents is crucial but presents significant challenges due to differences in morphology and capabilities, especially in heterogenous systems. While existing books address collaboration control, perception, and learning, there is a gap in focusing on active perception and interactive learning for embodied multi-agent systems.
This book aims to bridge this gap by establishing a unified framework for perception and learning in embodied multi-agent systems. It presents and discusses the perception-action-learning loop, offering systematic solutions for various types of agents-homogeneous, heterogeneous, and ad hoc. Beyond the popular reinforcement learning techniques, the book provides insights into using fundamental models to tackle complex collaboration problems.
By interchangeably utilizing constrained optimization, reinforcement learning, and fundamental models, this book offers a comprehensive toolkit for solving different types of embodied multi-agent problems. Readers will gain an understanding of the advantages and disadvantages of each method for various tasks. This book will be particularly valuable to graduate students and professional researchers in robotics and machine learning. It provides a robust learning framework for addressing practical challenges in embodied multi-agent systems and demonstrates the promising potential of fundamental models for scenario generation, policy learning, and planning in complex collaboration problems.

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Liu H Distributed Secondary Control of Microgrid Systems 2025

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Name: Liu H Distributed Secondary Control of Microgrid Systems 2025
Format: pdf
Size: 40.36 MB

Book:

Title: Distributed Secondary Control of Microgrid System
Author: Haoming Liu
Language: angielski
Year: 2025
Subjects: Science & Technology, Engineering, Electrical & Electronic Engineering, Electronics – General & Miscellaneous
Publisher: CRC Press
ISBN: 9781040315422
Total pages: 265

Description:

This book presents a detailed description of the transition from the traditional power system to the microgrid (MG) system.
The authors introduce the basic concepts of an MG system along with its different operating modes and classifications. The various benefits, challenges, and technical aspects of an MG are highlighted. They demonstrate different control strategies that are applied at different levels of the control hierarchy, particularly the distributed secondary control architecture. Furthermore, the adaptive techniques-based distributed schemes, a distributed architecture-based synchronization controller, and a delay-independent buffer-free distributed controller are proposed for the MG system.
This book can be useful for senior undergraduate students, postgraduate students, and researchers of electrical power engineering and system control.

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Liu H Circuit-Technology Co-Optimization of SRAM Design in Adv CMOS Nodes 2024

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Name: Liu H Circuit-Technology Co-Optimization of SRAM Design in Adv CMOS Nodes 2024
Format: pdf
Size: 7.94 MB

Book:

Title: Circuit-Technology Co-Optimization of SRAM Design in Advanced CMOS Nodes
Author: Hsiao-Hsuan Liu, Francky Catthoor
Language: polski
Year: 2024
Subjects: Computers, Computer Hardware, Computer Hardware – General
Publisher: Springer-Verlag New York, LLC
ISBN: 9783031761096
Total pages: 293

Description:

Modern computing engines-CPUs, GPUs, and NPUs-require extensive SRAM for cache designs, driven by the increasing demand for higher density, performance, and energy efficiency. This book delves into two primary areas within ultra-scaled technology nodes: (1) advancing SRAM bitcell scaling and (2) exploring innovative subarray designs to enhance power-performance-area (PPA) metrics across technology nodes.
The first part of the book utilizes a bottom-up design-technology co-optimization (DTCO) approach, employing a dedicated PPA simulation framework to evaluate and identify the most promising strategies for SRAM bitcell scaling. It offers a comprehensive examination of SRAM bitcell scaling beyond 1 nm node, outlining a structured research cycle that includes identifying scaling bottlenecks, developing cutting-edge architectures with complementary field-effect transistor (CFET) technology, and addressing challenges such as process integration and routing complexities. Additionally, this book introduces a novel write margin methodology to better address the risks of write failures in resistance-dominated nodes. This methodology accounts for time-dependent parasitic bitline effects and incorporates timing setup of write-assist techniques to prevent underestimating the yield loss.
In the second part, the focus shifts to a top-down DTCO approach due to the diminishing returns of bitcell scaling beyond 5 Å node at the macro level. As technology scales, increasing resistance and capacitance (RC) lead designers to adopt smaller subarray sizes to reduce effective RC and enhance subarray-level PPA. However, this approach can result in increased inter-subarray interconnect overhead, potentially offsetting macro-level improvements. This book examines the effects of various subarray sizes on macro-level PPA and finds that larger subarrays can significantly reduce interconnect overhead and improve the energy-delay-area product (EDAP) of SRAM macro. The introduction of the active interconnect (AIC) concept enables the use of larger subarray sizes, while integrating carbon nanotube FET as back-end-of-line compatible devices results in macro-level EDAP improvements of up to 65% when transitioning from standard subarrays to AIC divided subarrays. These findings highlight the future trajectory of SRAM subarray design in deeply scaled nodes.

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Liu G Numbers and Functions Theory, Formulation, and Python Codes 2024

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Name: Liu G Numbers and Functions Theory, Formulation, and Python Codes 2024
Format: pdf
Size: 43.95 MB

Book:

Title: Numbers and Functions : Theory, Formulation, and Python Codes (225 Pages)
Author: G. R. Liu
Language: polski
Year: 2024
Subjects: Science & Technology, Mathematics, Numerical Analysis & Solutions
Publisher: WSPC
ISBN: 9789811287640
Total pages: 226

Description:

This unique volume covers two fundamental elements of computational methods – numbers and functions. It provides an in-depth discussion of the behaviors of numbers, including both real and complex numbers. The discussion leads to the important closure properties of numbers, ensuring solution consistence and existence, and also possible failure in numerical computations in science and engineering.
This text then introduces types of functions that take numbers as independent variables and produce a single number. Approaches for constructing inverse functions are also provided. Frequently used basis functions are introduced, with detailed studies on their properties and behaviors. Techniques are presented for constructing basis functions and their use in function approximation in computational methods.
Contents:

• Introduction
• Real Numbers
• Complex Numbers
• Elementary Functions
• Basis Functions
• Function Approximation

Readership: Researchers, professionals, academics and graduate students in numerical analysis and mathematical computation.

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