2D Functional Nanomaterials Outlines the latest developments in 2D heterojunction nanomaterials with energy conversion applications In 2D Functional Nanomaterials: Synthesis, Characterization, and Applications, Dr. Ganesh S. Kamble presents an authoritative overview of the most recent progress in the rational design and synthesis of 2D nanomaterials and their applications in semiconducting catalysts, biosensors, electrolysis, batteries, and solar cells. This interdisciplinary volume is a valuable resource for materials scientists, electrical engineers, nanoscientists, and solid-state physicists looking for up-to-date information on 2D heterojunction nanomaterials. The text summarizes the scientific contributions of international experts in the fabrication and application of 2D nanomaterials while discussing the importance and impact of 2D nanomaterials on future economic growth, novel manufacturing processes, and innovative products. Provides thorough coverage of graphene chemical derivatives synthesis and applications, including state-of-the-art developments and perspectives Describes 2D/2D graphene oxide-layered double hydroxide nanocomposites for immobilization of different radionuclides Covers 2D nanomaterials for biomedical applications and novel 2D nanomaterials for next-generation photodetectors Discusses applications of 2D nanomaterials for cancer therapy and recent trends ingraphene-latex nanocomposites Perfect for materials scientists, inorganic chemists, and electronics engineers, 2D Functional Nanomaterials: Synthesis, Characterization, and Applications is also an essential resource for solid-state physicists seeking accurate information on recent progress in two-dimensional heterojunction materials with energy conversion applications.

Novel Electrochemical Energy Storage Devices Explore the latest developments in electrochemical energy storage device technology In Novel Electrochemical Energy Storage Devices, an accomplished team of authors delivers a thorough examination of the latest developments in the electrode and cell configurations of lithium-ion batteries and electrochemical capacitors. Several kinds of newly developed devices are introduced, with information about their theoretical bases, materials, fabrication technologies, design considerations, and implementation presented. You'll learn about the current challenges facing the industry, future research trends likely to capture the imaginations of researchers and professionals working in industry and academia, and still-available opportunities in this fast-moving area. You'll discover a wide range of new concepts, materials, and technologies that have been developed over the past few decades to advance the technologies of lithium-ion batteries, electrochemical capacitors, and intelligent devices. Finally, you'll find solutions to basic research challenges and the technologies applicable to energy storage industries. Readers will also benefit from the inclusion of: A thorough introduction to energy conversion and storage, and the history and classification of electrochemical energy storage An exploration of materials and fabrication of electrochemical energy storage devices, including categories, EDLCSs, pseudocapacitors, and hybrid capacitors A practical discussion of the theory and characterizations of flexible cells, including their mechanical properties and the limits of conventional architectures A concise treatment of the materials and fabrication technologies involved in the manufacture of flexible cells Perfect for materials scientists, electrochemists, and solid-state chemists, Novel Electrochemical Energy Storage Devices will also earn a place in the libraries of applied physicists, and engineers in power technology and the electrotechnical industry seeking a one-stop reference for portable and smart electrochemical energy storage devices.

As the selection of material for particular engineering properties becomes increasingly important in keeping costs down, methods for evaluating material properties also become more relevant. One such method examines the geometry of grain boundaries, which reveals much about the properties of the material. Studying material properties from their geometrical measurements, The Measurement of Grain Boundary Geometry provides a framework for a specialized application of electron microscopy for metals and alloys and, by extension, for ceramics, minerals, and semiconductors. The book presents an overview of the developments in the theory of grain boundary geometry and its practical applications in material engineering. It also covers the tunneling electron microscope (TEM), experimental aspects of data collection, data processing, and examples from actual investigations. Each step of the analysis process is clearly described, from data collection through processing, analysis, representation, and display to applications. The book also includes a glossary of terms. Exploring both the experimental and analytical aspects of the subject, this practical reference guide is essential for researchers and students involved in material properties, whether in physics, materials science, metallurgy, or physical chemistry.

The revised and updated new edition of the popular optimization book for engineers The thoroughly revised and updated fifth edition of Engineering Optimization: Theory and Practice offers engineers a guide to the important optimization methods that are commonly used in a wide range of industries. The author-a noted expert on the topic-presents both the classical and most recent optimizations approaches. The book introduces the basic methods and includes information on more advanced principles and applications. The fifth edition presents four new chapters: Solution of Optimization Problems Using MATLAB; Metaheuristic Optimization Methods; Multi-Objective Optimization Methods; and Practical Implementation of Optimization. All of the book's topics are designed to be self-contained units with the concepts described in detail with derivations presented. The author puts the emphasis on computational aspects of optimization and includes design examples and problems representing different areas of engineering. Comprehensive in scope, the book contains solved examples, review questions and problems. This important book: Offers an updated edition of the classic work on optimization Includes approaches that are appropriate for all branches of engineering Contains numerous practical design and engineering examples Offers more than 140 illustrative examples, 500 plus references in the literature of engineering optimization, and more than 500 review questions and answers Demonstrates the use of MATLAB for solving different types of optimization problems using different techniques Written for students across all engineering disciplines, the revised edition of Engineering Optimization: Theory and Practice is the comprehensive book that covers the new and recent methods of optimization and reviews the principles and applications.

From the basic theory of biomedical photonics to its application in the field of biomedical photonics, this book summarizes the current research hotspots, research ideas, applied technologies and methods, as well as the future development trend of biomedical photonics.

Das Fachbuch umfasst 18 Kapitel, die in drei Abschnitte unterteilt sind: Grundlage der Eisbildung und Eigenschaften von Eis, Eishaftung und deren Messung, Methoden zur Abschwachung von Eishaftung. Die behandelten Themen: Faktoren, die die Bildung, Haftung und Reibung von Eis beeinflussen, Eisnukleation auf festen Oberflachen, Physik der Eisnukleation und Wachstum auf Oberflachen, Kondensation und Gefrieren, Abtaueigenschaften von strukturierten Oberflachen, Zusammenhang zwischen oberflachenfreier Energie und Eishaftung auf Oberflachen, Meteorologie der Eishaftung, Testverfahren zur Quantifizierung der Starke von Eishaftung auf Oberflachen, Ringstudien zur Starke von Eishaftung, Mechanismen der Technologien der Oberflachenvereisung und -enteisung, Vereisungsschutz mittels mikrostrukturierter Oberflachen, Festigkeitsprufung von eisphoben Beschichtungen, bioinspirierte eis-phobe Beschichtungen, Herausforderungen bei der rationellen Fertigung eis-phober Oberflachen, Schutz vor Eisansatz bei Flugzeugen, numerische Modellierung und deren Anwendung bei Vereisung wahrend eines Fluges.

This volume contains a selection of papers whose content have been presented at the International conferences CIPHI on Cultural Heritage and History of Engineering at University of Las Palmas de Gran Canaria in the Canary Islands, Spain, in recent years. The conference series is aimed at bringing together researchers, scholars and students from a broad range of disciplines referring to the History of Engineering and Cultural Heritage, in a unique multidisciplinary forum to stimulate collaboration among historians, architects, restaurateurs, and engineers.

These papers illustrate, by treating specific emblematic topics and problems, technical developments in the historical evolution of engineering concerning cultural heritage. Thus, emphasis is given to a discussion of matters of cultural heritage with engineering history by reporting authors' experiences and views. Topics treated include: reutilization of industrial heritage: the unique example of the Royal Segovia Mint in Spain; the image of factories; Pedro Juan De Lastanosa and "the twenty-one books of devices and machines of Juanelo"; the historical development of paper-mills and their machines in South Latium during 19th century; a virtual reconstruction of a wave-powered flour mill from 1801; 3D modelling and animation study of the industrial heritage wonders; a new model of the hydraulic machine known as "el artificio de Juanelo"; and the mystery of one Havana portrait, on the first steam machine in Cuba. This work has been made possible thanks to the invited authors who have enthusiastically shared this initiative and who have spent time and effort in preparing the papers in much more detail that in the conference presentations."

Known for its accuracy, clarity, and dependability, Meriam, Kraige, and Bolton's Engineering Mechanics: Statics, 9th Edition has provided a solid foundation of mechanics principles for more than 60 years. This text continues to help students develop their problem-solving skills with an extensive variety of engaging problems related to engineering design. In addition to new homework problems, the text includes a number of helpful sample problems. To help students build necessary visualization and problem-solving skills, the text strongly emphasizes drawing free-body diagrams, one of the most important skills needed to solve mechanics problems.

A lot of recent developments have been made about adhesively bonded joints modeling using various methods of analysis. The increasing application of adhesives in industry is partly due to the increased sophistication and reliability of adhesive joints modeling. The book proposed intends to provide the designer with the most advanced stress analyses techniques in adhesive joints to reinforce the use of this promising bonding technique.

Metal cutting is an essential process throughout engineering design and manufacturing industries. To increase efficiency and reduce costs, it is necessary to improve understanding of the metal cutting process. This book presents a comprehensive treatment of the subject that focuses on the features of the behavior of tool and work materials that influence the efficiency of metal cutting operations.
The fourth edition of this acclaimed book has been expanded and revised to include significant changes and additions to metal cutting theory, and to cover developments in tool materials and industrial practice. In particular, improvements in the understanding of the generation of heat and distribution of temperature in the cutting tool are described; a discussion of the structure, properties, and performance of newly developed ceramic tool materials and tool coatings is presented; new information of the machinability of alloys is given; and the introduction of calcium deoxidized steels and their improved machinability are assessed. Additionally, a material selection and design-based approach is expanded upon to improve industrial relevance.
Metal Cutting provides invaluable information for those engaged in machining, toolmaking, and related engineering activities, and it serves as a useful introduction to the subject for students of metallurgy and engineering.

Presents a comprehensive treatment of the subject
Includes information on significant changes and additions to metal cutting theory
Offers industrial relevance through a materials selection and and design-based approach

This book provides a comprehensive introduction to the mathematical theory of compressible flow, describing both inviscid and viscous compressible flow, which are governed by the Euler and the Navier-Stokes equations respectively. The method of presentation allows readers with different backgrounds to focus on various modules of the material, either in part or more fully. Chapters include detailed heuristic arguments providing motivation for technical aspects that are rigorously presented later on in the text; for instance, the existence theory for steady and unsteady Navier-Stokes equations of isentropic compressible flow, and two-by-two systems of Euler equations in one space dimension. These parts are presented in a textbook style with auxiliary material in supporting sections and appendices. The book includes a rich index and extensive bibliography, thus allowing for quick orientation among the vast collection of literature on the mathematical theory of compressible flow, as well as in the book itself.

Expert guidance for fiscally responsible engineering and technology managers

Written for practicing project engineers, students, and technical managers with no previous background in accounting or finance, Financial and Economic Analysis for Engineering and Technology Management, Second Edition provides a thorough grounding in accounting and introductory finance to help make better financial decisions in the workplace.

This thoroughly updated Second Edition is an accessible self-study guide and text that helps engineers extract important meaning from financial statements and accounting records, ask insightful questions, engage in thoughtful debate about accounting and financial issues, and make informed decisions that benefit their companies. Offering a rigorous background in accounting-including balance sheets, income statements, and cash flow statements-this valuable guide builds on this foundation to address financial markets and corporate finance, including capital investment analysis, and managerial and cost accounting.

Financial and Economic Analysis for Engineering and Technology Management, Second Edition features:

• New material on NPV, IRR, and the link between financial accounting and financial management
• Key accounting procedures and analytical techniques explained in jargon-free language
• Dozens of discussion questions and practice problems
• Real-life case studies with an available solutions manual

Broad coverage of digital product creation, from design to manufacture and process optimization This book addresses the need to provide up-to-date coverage of current CAD/CAM usage and implementation. It covers, in one source, the entire design-to-manufacture process, reflecting the industry trend to further integrate CAD and CAM into a single, unified process. It also updates the computer aided design theory and methods in modern manufacturing systems and examines the most advanced computer-aided tools used in digital manufacturing. Computer Aided Design and Manufacturing consists of three parts. The first part on Computer Aided Design (CAD) offers the chapters on Geometric Modelling; Knowledge Based Engineering; Platforming Technology; Reverse Engineering; and Motion Simulation. The second part on Computer Aided Manufacturing (CAM) covers Group Technology and Cellular Manufacturing; Computer Aided Fixture Design; Computer Aided Manufacturing; Simulation of Manufacturing Processes; and Computer Aided Design of Tools, Dies and Molds (TDM). The final part includes the chapters on Digital Manufacturing; Additive Manufacturing; and Design for Sustainability. The book is also featured for being uniquely structured to classify and align engineering disciplines and computer aided technologies from the perspective of the design needs in whole product life cycles, utilizing a comprehensive Solidworks package (add-ins, toolbox, and library) to showcase the most critical functionalities of modern computer aided tools, and presenting real-world design projects and case studies so that readers can gain CAD and CAM problem-solving skills upon the CAD/CAM theory. Computer Aided Design and Manufacturing is an ideal textbook for undergraduate and graduate students in mechanical engineering, manufacturing engineering, and industrial engineering. It can also be used as a technical reference for researchers and engineers in mechanical and manufacturing engineering or computer-aided technologies.

Sustainable Manufacturing Systems Learn more about energy efficiency in traditional and advanced manufacturing settings with this leading and authoritative resource Sustainable Manufacturing Systems: An Energy Perspective delivers a comprehensive analysis of energy efficiency in sustainable manufacturing. The book presents manufacturing modeling methods and energy efficiency evaluation and improvement methods for different manufacturing systems. It allows industry professionals to understand the methodologies and techniques being embraced around the world that lead to advanced energy management. The book offers readers a comprehensive and systematic theoretical foundation for novel manufacturing system modeling, analysis, and control. It concludes with a summary of the insights and applications contained within and a discussion of future research issues that have yet to be grappled with. Sustainable Manufacturing Systems answers the questions that energy customers, managers, decision makers, and researchers have been asking about sustainable manufacturing. The book's release coincides with recent and profound advances in smart grid applications and will serve as a practical tool to assist industrial engineers in furthering the green revolution. Readers will also benefit from: A thorough introduction to energy efficiency in manufacturing systems, including the current state of research and research methodologies An exploration of the development of manufacturing methodologies, including mathematical modeling for manufacturing systems and energy efficiency characterization in manufacturing systems An analysis of the applications of various methodologies, including electricity demand response for manufacturing systems and energy control and optimization for manufacturing systems utilizing combined heat and power systems A discussion of energy efficiency in advanced manufacturing systems, like stereolithography additive manufacturing and cellulosic biofuel manufacturing systems Perfect for researchers, undergraduate students, and graduate students in engineering disciplines, especially for those majoring in industrial, mechanical, electrical, and environmental engineering, Sustainable Manufacturing Systems will also earn a place in the libraries of management and business students interested in manufacturing system cost performance and energy management.

Many students, engineers, scientists and researchers have benefited from the practical, programming-oriented style of the previous editions of Programming the Finite Element Method, learning how to develop computer programs to solve specific engineering problems using the finite element method. This new fifth edition offers timely revisions that include programs and subroutine libraries fully updated to Fortran 2003, which are freely available online, and provides updated material on advances in parallel computing, thermal stress analysis, plasticity return algorithms, convection boundary conditions, and interfaces to third party tools such as ParaView, METIS and ARPACK. As in the previous editions, a wide variety of problem solving capabilities are presented including structural analysis, elasticity and plasticity, construction processes in geomechanics, uncoupled and coupled steady and transient fluid flow and linear and nonlinear solid dynamics. Key features: Updated to take into account advances in parallel computing as well as new material on thermal stress analysis Programs use an updated version of Fortran 2003 Includes exercises for students Accompanied by website hosting software Programming the Finite Element Method , Fifth Edition is an ideal textbook for undergraduate and postgraduate students in civil and mechanical engineering, applied mathematics and numerical analysis, and is also a comprehensive reference for researchers and practitioners . Further information and source codes described in this text can be accessed at the following web sites: www.inside.mines.edu/~vgriffit /PFEM5 for the serial programs from Chapters 4-11 www.parafem.org.uk for the parallel programs from Chapter 12

The first edition of the combined monograph and textbook Probabilistic Methods in the Theory of Structures was published by Wiley-Interscience in 1983. 1n 1999, Dover Publications, Inc. published its second edition under shorter title Probabilistic Theory of Structures. Now, World Scientific has expanded into a 3rd edition to include Problems with Complete Worked-Through Solutions. This compendium of solutions was written in response to requests by numerous university educators around the world, since it has been adopted as a textbook or an additional reading for both undergraduate and graduate courses.The author hopes that the availability of such solutions manual will further help to establish the courses dealing with probabilistic strength of materials, design, random buckling, and random vibration. The material itself was developed by author for various undergraduate and graduate courses, during years 1972-1989 at the Technion - Israel Institute of Technology, in Haifa, Israel, at the Delft University of Technology in the Netherlands, year 1979/80 at the University of Notre Dame, Indiana, USA and at the Florida Atlantic University, USA since 1994.Already since mid-eighties, the author was informed that the book was adopted in numerous universities worldwide. Besides complete solutions to more than one hundred problems, additional material and remarks are included as Chapter 12, bringing some ideas down to the 'number' level.It is strongly hoped that this manual will promote much wider dissemination of probabilistic methods' courses at universities, and ultimately, in engineering practice worldwide.The 3rd Edition of the textbook, , is available separately.

This book is the first to deal with the important topic of the fire behaviour of fibre reinforced polymer composite materials. The book covers all of the key issues on the behaviour of composites in a fire. Also covered are fire protection materials for composites, fire properties of nanocomposites, fire safety regulations and standards, fire test methods, and health hazards from burning composites.

The first edition of the combined monograph and textbook Probabilistic Methods in the Theory of Structures was published by Wiley-Interscience in 1983. 1n 1999, Dover Publications, Inc. published its second edition under shorter title Probabilistic Theory of Structures. Now, World Scientific has expanded into a 3rd edition to include Problems with Complete Worked-Through Solutions. This compendium of solutions was written in response to requests by numerous university educators around the world, since it has been adopted as a textbook or an additional reading for both undergraduate and graduate courses.The author hopes that the availability of such solutions manual will further help to establish the courses dealing with probabilistic strength of materials, design, random buckling, and random vibration. The material itself was developed by author for various undergraduate and graduate courses, during years 1972-1989 at the Technion - Israel Institute of Technology, in Haifa, Israel, at the Delft University of Technology in the Netherlands, year 1979/80 at the University of Notre Dame, Indiana, USA and at the Florida Atlantic University, USA since 1994.Already since mid-eighties, the author was informed that the book was adopted in numerous universities worldwide. Besides complete solutions to more than one hundred problems, additional material and remarks are included as Chapter 12, bringing some ideas down to the 'number' level.It is strongly hoped that this manual will promote much wider dissemination of probabilistic methods' courses at universities, and ultimately, in engineering practice worldwide.The 3rd Edition of the textbook, , is available separately.

Interface Engineering in Organic Field-Effect Transistors Systematic summary of advances in developing effective methodologies of interface engineering in organic field-effect transistors, from models to experimental techniques Interface Engineering in Organic Field-Effect Transistors covers the state of the art in organic field-effect transistors and reviews charge transport at the interfaces, device design concepts, and device fabrication processes, and gives an outlook on the development of future optoelectronic devices. This book starts with an overview of the commonly adopted methods to obtain various semiconductor/semiconductor interfaces and charge transport mechanisms at these heterogeneous interfaces. Then, it covers the modification at the semiconductor/electrode interfaces, through which to tune the work function of electrodes as well as reveal charge injection mechanisms at the interfaces. Charge transport physics at the semiconductor/dielectric interface is discussed in detail. The book describes the remarkable effect of SAM modification on the semiconductor film morphology and thus the electrical performance. In particular, valuable analyses of charge trapping/detrapping engineering at the interface to realize new functions are summarized. Finally, the sensing mechanisms that occur at the semiconductor/environment interfaces of OFETs and the unique detection methods capable of interfacing organic electronics with biology are discussed. Specific sample topics covered in Interface Engineering in Organic Field-Effect Transistors include: Noncovalent modification methods, charge insertion layer at the electrode surface, dielectric surface passivation methods, and covalent modification methods Charge transport mechanism in bulk semiconductors, influence of additives on materials’ nucleation and morphology, solvent additives, and nucleation agents Nanoconfinement effect, enhancing the performance through semiconductor heterojunctions, planar bilayer heterostructure, ambipolar charge-transfer complex, and supramolecular arrangement of heterojunctions Dielectric effect in OFETs, dielectric modification to tune semiconductor morphology, surface energy control, microstructure design, solution shearing, eliminating interfacial traps, and SAM/SiO2 dielectrics A timely resource providing the latest developments in the field and emphasizing new insights for building reliable organic electronic devices, Interface Engineering in Organic Field-Effect Transistors is essential for researchers, scientists, and other interface-related professionals in the fields of organic electronics, nanoelectronics, surface science, solar cells, and sensors.

Held in Wuhan of China from August 20-21, 2016, the 2016 International Conference on Mechatronics and Manufacturing Technologies (MMT2016) provides an excellent international academic forum for all the researchers and practitioners to share resources, exchange opinions and inspire studying.The conference enjoys a wide spread participation among all over the universities and research institutes. It provides a broad overview of the latest research results on related fields and also a significant platform for academic connection and exchange.MMT2016 proceedings collects together 96 articles, after peer-review, to report on state-of-art developments of mechanical engineering based on originality, significance and clarity for the purpose of the Conference.

This book introduces a new framework for non-linear analysis and control of intelligent machines such as robot arms, mechanical hands, and other advanced mechatronic systems. It clarifies the physical and mathematical prinicples underlying the complicated dynamics of non-linear mechanical systems and deals with the design of controllers that enable sophisticated tasks to be executed. A new concept called `non-linear position-dependent circuits' plays a crucial role, together with passivity analysis as a generalization of the impedance concept. Adaptability and learnability of robot arms and hands as intelligent machines are aLso analysed through visible expressions of their dynamics via corresponding non-linear circuits and generalized impedance concepts. This approach may mark a milestone not only in development of a control theory for advanced mechatronics systems but also in the long path toward understanding the mysteries of motor control in the human central nervous system.

Comprehensive reference on the field of inverse heat conduction problems (IHCPs), now including advanced topics, numerous practical examples, and downloadable MATLAB codes. The 1st Edition of the classic book Inverse Heat Conduction: Ill-posed Problems, published in 1985, has been used as one of the primary references for researchers and professionals working on IHCPs due to its comprehensive scope and dedication to the topic. The 2nd Edition of the book is a largely revised version of the 1st Edition with several all-new chapters and significant enhancement of the previous materials. Over the past 30 years, the authors of this 2nd Edition have collaborated on research projects that form the basis for this book. The book can serve as an effective textbook for graduate students and as a reliable reference book for professionals. Examples and problems throughout the text reinforce concepts presented and the book is accompanied by downloadable MATLAB codes covering solutions for every example in the book. The 2nd Edition also comes with additional materials including course slides, additional problems and suggested course syllabus that are available on an instructor companion website. The 2nd Edition continues emphasis from the 1st Edition on linear heat conduction problems with revised presentation of Stolz, Function Specification and Tikhonov Regularization methods and expands coverage to include Conjugate Gradient Methods and the Singular Value Decomposition method. The Filter Matrix concept is explained and embraced throughout the presentation and allows any of these solution techniques to be represented in a simple explicit linear form. Two direct approaches suitable for non-linear problems, the Adjoint Method and Kalman Filtering, are presented, as well as an adaptation of the Filter Matrix approach applicable to non-linear heat conduction problems. In the 2nd Edition of Inverse Heat Conduction: Ill-posed Problems, readers will find detailed discussions on: A comprehensive literature review of IHCP applications in various fields of engineering. Exact solutions to several fundamental problems for direct heat conduction problems, the concept of the computational analytical solution, and approximate solution methods for discrete time steps using superposition of exact solutions which form the basis for the IHCP solutions in the text. IHCP solution methods and comparison of many of these approaches through a common suite of test problems. Filter matrix form of IHCP solution methods and discussion of using filter-form Tikhonov regularization for solving complex IHCPs in multi-layer domain with temperature-dependent material properties. Methods and criteria for selection of the optimal degree of regularization in solution of IHCPs. Application of the filter concept for solving two-dimensional transient IHCP problems with multiple unknown heat fluxes. Estimating the heat transfer coefficient, h, for lumped capacitance body and bodies with temperature gradients. Bias in temperature measurements in the IHCP and correcting for temperature measurement bias. Inverse Heat Conduction is a must-have resource on the topic for mechanical, aerospace, chemical, biomedical or metallurgical engineers who are active in the design and analysis of thermal systems within the fields of manufacturing, aerospace, medical, defense, and instrumentation, as well as researchers in the areas of thermal science and computational heat transfer.

The subject discussed in this book is the stability of thin-walled elastic systems under static loads. The presentation of these problems is based on modern approaches to elastic-stability theory. Special attention is paid to the formulation of elastic-stability criteria, to the statement of column, plate and shell stability problems, to the derivation of basic relationships, and to a discussion of the boundaries of the application of analytic relationships. The author has tried to avoid arcane, nonstandard problems and elaborate and unexpected solutions, which bring real pleasure to connoisseurs, but confuse students and cause bewilderment to some practical engineers. The author has an apprehension that problems which, though interesting, are limited in application can divert the reader's attention from the more prosaic but no less sophisticated general problems of stability theory.