Computational welding mechanics (CWM) provides an important technique for modelling welding processes. Welding simulations are a key tool in improving the design and control of welding processes and the performance of welded components or structures. CWM can be used to model phenomena such as heat generation, thermal stresses and large plastic deformations of components or structures. It also has a wider application in modelling thermomechanical and microstructural phenomena in metals. This important book reviews the principles, methods and applications of CWM.
The book begins by discussing the physics of welding before going on to review modelling methods and options as well as validation techniques. It also reviews applications in areas such as fatigue, buckling and deformation, improved service life of components and process optimisation. Some of the numerical methods described in the book are illustrated using software available from the author which allows readers to explore CWM in more depth.
Computational welding mechanics is a standard work for welding engineers and all those researching welding processes and wider thermomechanical and microstructural phenomena in metals.
Highlights the principles, methods and applications of CWMDiscusses the physics of weldingAssesses modelling methods and validation techniques

This book explores the theory and methods of systems analysis and computer modeling as applied to problems in ecology and natural resource management. It reflects the problems and conflicts between competing uses of limited space and the need for quantitative predictors of the outcome of various management strategies.

The Molecular Solid State Founding Editor: J. D. Dunitz ETH Zentrum, ZA1/4rich, Switzerland This new series reports on advances in the field of molecular solid state chemistry. Each volume focuses on selected areas and highlights methods and results in syntheses, properties and applications. Future volumes will provide a continuing forum for the discussion of chemical, physical, biological and crystallographic aspects of the molecular solid state. Theoretical Aspects and Computer Modeling of the Molecular Solid State Edited by Angelo Gavezzotti, University of Milan, Italy Focusing on crystal symmetry, intermolecular forces and the thermodynamics of solids and phase transitions, this first volume in the series provides the basic theoretical framework for understanding the molecular solid state. This compendium of reviews opens the way to the computer modeling of molecules and molecular crystals, enabling the reproduction and prediction of structural and energetic properties. This forms the basis for understanding the exciting developments in experimental techniques and the design and creation of novel materials. An appreciation of the underlying theories and uses of molecular modeling packages is essential for the solid state chemist. Angelo Gavezzotti is a professor of physical chemistry at the University of Milan and a renowned expert in the theoretical and computer modeling of organic solids. He provides an introductory chapter on crystal symmetry and molecular recognition, a topic that is essential in understanding how crystals grow and how crystal properties are related to the physical properties of solids. Theoretical Aspects and Computer Modeling of the Molecular Solid State isinvaluable to theoretical chemists in materials science, crystallography and solid state chemistry.

The second part of a yearly series on simulation technology, OBJECT-ORIENTED SIMULATION presents an outstanding variety of the very latest advances in simulation techniques. This leading-edge volume contains a cohesive selection of presentations written by the world-renowned experts in a broad range of topics. OBJECT-ORIENTED SIMULATION is a key resource for anyone involved in computer simulator research and design as well as developers, producers, scholars, and managers. It is an excellent tool for preparing proposals for simulation in commercial and military fields.

Environmental Behaviour of Agrochemicals deals with a major area of concern regarding the use of agrochemicals - the potential for contamination of soil, air and water. This ninth volume in the Progress in Pesticide Biochemistry and Toxicology series, provides an international outlook on the impact of the production and use of agrochemicals on the environment, In Environmental Behaviour of Agrochemicals emphasis is placed on the methods for assessing the movement of pesticides into ground water from a variety of perspectives, and run-off of agrochemicals from soil into surface water. In addition to detailed accounts of recommended analytical methodologies for environmental samples, an in-depth overview is given of recent developments in the use of computer simulation models for assessing environmental fate. Coverage also includes the current status of biosensors for in vitro measurements for environmental analysis, volatization of agrochemicals and estimation of physico-chemical properties. Environmental Behaviour of Agrochemicals brings together contributions from internationally renowned experts to discuss a developing topic which is of vital importance to both producers and users of agrochemicals.

Helps you ensure that your simulations are appropriate representations of real-world systems. The book concentrates on the differentiation between the assessment of a simulation tool and the verification and validation of general software products. It is a systematic, procedural, practical guide that you can use to enhance the credibility of your simulation models. In addition, it is a valuable reference book and a road map for software developers and quality assurance experts, or as a text for simulation methodology and software engineering courses.
This book details useful assessment procedures and phases, discusses ways to tailor the methodology for specific situations and objectives, and provides numerous assessment aids. The reader can use these aids to support ongoing assessments over the entire life cycle of the model.

Alan Turing was one of the most important and influential thinkers of the 20th century. This volume makes his key writings available to a non-specialist readership for the first time. They make fascinating reading both in their own right and for their historic significance: contemporary computational theory, cognitive science, and artificial intelligence life all spring from this ground-breaking work.

Everything you need to know about developing hardware-accelerated 3D graphics with WebGL

As the newest technology for creating 3D graphics on the web, in both games, applications, and on regular websites, WebGL gives web developers the capability to produce eye-popping graphics. This book teaches you how to use WebGL to create stunning cross-platform apps. The book features several detailed examples that show you how to develop 3D graphics with WebGL, including explanations of code snippets that help you understand the why behind the how.

You will also develop a stronger understanding of WebGL development from coverage that:

-Provides a comprehensive overview of WebGL and shows how it relates to other graphics-related technologies-Addresses important topics such as the WebGL graphics pipeline, 3D transformations, texturing and lighting -Teaches you how to write vertex shaders and fragment shaders for WebGL -Includes a lot of useful guidelines, tips, and tricks for WebGL performance optimizations

Professional WebGL Programming is the first book on the market to delve into this fascinating topic and it puts you on your way to mastering the possibilities that exist with WebGL.

The science of materials (metallurgy) tells us that every material contains microscopic features that vary at different length scales. This underlying microstructure determines the mechanical properties of the material. This book presents the particularly dramatic and compelling case of shape-memory alloys, technologically important materials, beautifully explaining the link between microstructure and macroscopic properties. A sample wire of shape memory material is included with the book.

The Finite Element Method (FEM) has become an indispensable technology for the modelling and simulation of engineering systems. Written for engineers and students alike, the aim of the book is to provide the necessary theories and techniques of the FEM for readers to be able to use a commercial FEM package to solve primarily linear problems in mechanical and civil engineering with the main focus on structural mechanics and heat transfer.
Fundamental theories are introduced in a straightforward way, and state-of-the-art techniques for designing and analyzing engineering systems, including microstructural systems are explained in detail. Case studies are used to demonstrate these theories, methods, techniques and practical applications, and numerous diagrams and tables are used throughout.
The case studies and examples use the commercial software package ABAQUS, but the techniques explained are equally applicable for readers using other applications including NASTRAN, ANSYS, MARC, etc.
Full sets of PowerPoint slides developed by the authors for their course on FEM are available as a free download from a companion website.
* A practical and accessible guide to this complex, yet important subject
* Covers modeling techniques that predict how components will operate and tolerate loads, stresses and strains in reality
* Full set of PowerPoint presentation slides which illustrate and support the book are available on a companion website.

The 3D printing revolution is well upon us, with new machines appearing at an amazing rate. With the abundance of information and options out there, how are makers to choose the 3D printer that's right for them? MAKE is here to help, with our Ultimate Guide to 3D Printing. With articles about techniques, freely available CAD packages, and comparisons of printers that are on the market, this book makes it easy to understand this complex and constantly-shifting topic. Based on articles and projects from MAKE's print and online publications, this book arms you with everything you need to know to understand the exciting but sometimes confusing world of 3D Printing.

The objective of this publication is to comprehensively discuss the possibilities of producing steels with pre-determined attributes, demanded by the customer to fit exacting specifications. The information presented in the book has been designed to indicate the reasons for the expenses and to aid in the process of overcoming the difficulties and reducing the costs.

In nine detailed chapters, the authors cover topics including: steel as a major contributor to the economic wealth of a country in terms of its capabilities and production current concerns of major steel producers phenomena contributing to the quality of the product information concerning the boundary conditions of the rolling process and initial conditions, put to use by mathematical models the solid state incremental approach and flow formulation parameters and variables - most of which make use of the exponential nature of phenomena that are activated by thermal energy the application of three dimensional analysis to shape rolling the evaluation of parameters by a form of inverse analysis to the flat rolling process knowledge based modeling, using artificial intelligence, expert systems and neural networks

They conclude that when either mathematical or physical modeling of the rolling process is considered and the aim is to satisfy the demands for customers, it is possible to produce what the customer wants, exactly.
"

"Global Change Scenarios of the 21st Century" informs readers of conceivable environmental changes in the next hundred years. Integrated scenarios are used to communicate large amounts of information about different aspects of the global environmental system, together with society's role within this system. Uniquely, the scenarios are generated by an integrated computer model, IMAGE 2.1, which enhances consistency and provides a framework for linking environmental and social aspects of global change.
The book is divided into four parts, the volume begins by describing the model used to generate these scenarios, explaining its current features. This is followed by scenarios of changing climate, energy and food use, land cover, acidification, sea level and many other indicators of global change up to 2100. The long term consequences of actions to reduce greenhouse gas emissions are then explored in a section which uses the concepts of 'safe landing' and 'safe emission corridors' to address the connection between the long-term climate protection and short-term emission reductions. The final sections examines how the complicated and crucial issue of how complex global scenario information can be communicated to policy makers.

Process Modelling and simulation have proved to be extremely successful engineering tools for the design and optimisation of physical, chemical and biochemical processes. The use of simulation has expanded rapidly over the last two decades because of the availability of large high-speed computers and indeed has become even more widespread with the rise of the desk-top PC resources now available to nearly every engineer and student.
In the chemical industry large, realistic non-linear problems are routinely solved with the aid of computer simulation. This has a number of benefits, including easy assessment of the economic desirability of a project, convenient investigation of the effects of changes to system variables, and finally the introduction of mathematical rigour into the design process and inherent assumptions that may not have been there before.
'Computational Methods for Process Simulation' develops the methods needed for the simulation of real processes to be found in the process industries. It also stresses the engineering fundamentals used in developing process models. Steady state and dynamic systems are considered, for both spatially lumped and spatially distributed problems. It develops analytical and numerical computational techniques for algebraic, ordinary and partial differential equations, and makes use of computer software routines that are widely available. Dedicated software examples are available via the internet.
Written for a compulsory course element in the US
Includes examples using software used in academia and industry
Software available via the Internet

Computer simulation techniques are now having a major impact on almost all areas of the physical and biological sciences. This book concentrates on the application of these methods to inorganic materials, including topical and industrially relevant systems including zeolites and high Tc superconductors.
The central theme of the book is the use of modern simulation techniques as a structural tool in solid state science. Computer Modelling in Inorganic Crystallography describes the current range of techniques used in modeling crystal structures, and strong emphasis is given to the use of modeling in predicting new crystal structures and refining partially known structures. It also reviews new opportunities being opened up by electronic structure calculation and explains the ways in which these techniques are illuminating our knowledge of bonding in solids.
Key Features
* Includes a thorough review of the technical basis of relevant contemporary methodologies including minimization, Monte-Carlo, molecular dynamics, simulated annealing methods, and electronic structure methods
* Highlights applications to amorphous and crystalline solids
* Surveys simulations of surface and defect properties of solids
* Discusses applications to molecular and inorganic solids

Assuming only background knowledge of algebra and elementary calculus, and access to a modern personal computer, Nonlinear Computer Modeling of Chemical and Biochemical Data presents the fundamental basis and procedures of data modeling by computer using nonlinear regression analysis. Bypassing the need for intermediary analytical stages, this method allows for rapid analysis of highly complex processes, thereby enabling reliable information to be extracted from raw experimental data.
By far the greater part of the book is devoted to selected applications of computer modeling to various experiments used in chemical and biochemical research. The discussions include a short review of principles and models for each technique, examples of computer modeling for real and theoretical data sets, and examples from the literature specific to each instrumental technique.
The book also offers detailed tutorial on how to construct suitable models and a score list of appropriate mathematics software packages.

Model based predictive control (MBPC) is arguably the most important approach to the advance control of complex interacting industrial processes. Unique among modern theories, MBPC can handle real-time state and actuator constraints in a natural way, enabling plants to maximize their profits. In addition, the wide range of model structures, prediction horizons, and optimization criteria allows for tailor-made MBPC applications--whether they be for high-speed machine tools or large-scale industrial processes. This timely edited volume, based on a conference held at Oxford University and devoted exclusively to MBPC, brings the field up to date with the latest theoretical and practical advances. Topics include how MBPC is expanding to include variants in the basic themes (such as new prediction and optimization approaches, nonlinear models, and two-dimensional problems), general stabilization ideas for constrained plant, and unsolved problems in MBPC. This excellent volume is the introduction to the theory, current applications, and hot research areas in MBPC that students and professionals in control systems have been waiting for.

A comprehensive introduction to 3D modeling, from the fundamental ideas of topology to in-depth examples that will help you take your projects to the next level Key Features Overcome complex topology problems while working through projects Learn to topologize quad-based and non-quad-based meshes with step-by-step examples Optimize your models by reducing the triangle count to improve performance Book DescriptionThis book is an introduction to modeling and an in-depth look at topology in Blender, written by a Blender topology specialist with years of experience with the software. As you progress through its chapters, you'll conquer the basics of quad-based topology using triangles and Ngons, and learn best practices and things to avoid while modeling and retopologizing. The pages are full of illustrations and examples with in-depth explanations that showcase each step in an easy-to-follow format. Squeaky Clean Topology in Blender starts by introducing you to the user interface and navigation. It then goes through an overview of the modeling techniques and hotkeys that will be necessary to understand the examples. With the modeling basics out of the way, the next stop on our journey is topology. Working through projects like a character and a sci-fi blaster, the book will illustrate and work through complex topology problems, and present solutions to those problems. These examples focus on deforming character models, non-deforming hard surface models, and optimizing these models by reducing the triangle count. By the end of this book, you will be able to identify the general flow of a shape's topology, identify and solve issues in your topology, and come out with a model ready for UV unwrapping, materials, and rigging. What you will learn Identify the general flow of a model's topology, and what might cause issues Understand the topology of a character, and the joints that they make up Handle non-quad based topology Lay out your meshes for UV seams Explore and use hotkeys to get things done faster Optimize models for a reduced triangle count Who this book is forThis book is for character modelers, sculptors, poly modelers, and hard surface modelers. Whether you're looking for an introduction to modeling, optimizing high poly or sculpted models, or just a deeper dive into the subject of topology, this book will walk you through the topology workflow from beginning to end.

Phase diagrams are used in materials research and engineering to understand the interrelationship between composition, microstructure and process conditions. In complex systems, computational methods such as CALPHAD are employed to model thermodynamic properties for each phase and simulate multicomponent phase behavior. Written by recognized experts in the field, this is the first introductory guide to the CALPHAD method, providing a theoretical and practical approach. Building on core thermodynamic principles, this book applies crystallography, first principles methods and experimental data to computational phase behavior modeling using the CALPHAD method. With a chapter dedicated to creating thermodynamic databases, the reader will be confident in assessing, optimizing and validating complex thermodynamic systems alongside database construction and manipulation. Several case studies put the methods into a practical context, making this suitable for use on advanced materials design and engineering courses and an invaluable reference to those using thermodynamic data in their research or simulations.

Blender is a vast and customizable 3D-modeling application used by many artists across creative industries, from television to games. This newest book, in Alan Thorn's How to Cheat series, offers insightful and bite-sized power-tips to help you develop Blender mastery. More than five hundred figures illustrate interesting shortcuts and clever ways to improve your Blender workflow. A companion website at http://www.alanthorn.net provides bonus content, including videos and resources to help sharpen your skills further. How to Cheat in Blender 2.7x is for Blender users of all levels, offering time-saving tips and powerful techniques to increase your productivity. Key Features Bite-sized tips and tricks that can be read in any order Illustrated examples and step-by-step guides for improving your workflow Explores practical applications and real-world contexts Demonstrates "lesser-known" and unconventional tips Improves your efficiency and workflow

Master the numerical simulation process required to design, test and support mobile and parallel computing systems. An accompanying ftp site contains all the Visual C++ based programs discussed in the text to help readers create their own programs. With its focus on problems and solutions, this is an excellent text for upper-level undergraduate and graduate students, and a must-have reference for researchers and professionals in the field of simulations.
More information about Visual C++ based programs can be found at: ftp: //ftp.wiley.com/public/sci_tech_med/numerical_simulations/

State-of-the-art coverage of modern computational methods for the analysis and design of beams

Analysis and Design of Elastic Beams presents computer models and applications related to thin-walled beams such as those used in mechanical and aerospace designs, where thin, lightweight structures with high strength are needed. This book will enable readers to compute the cross-sectional properties of individual beams with arbitrary cross-sectional shapes, to apply a general-purpose computer analysis of a complete structure to determine the forces and moments in the individual members, and to use a unified approach for calculating the normal and shear stresses, as well as deflections, for those members’ cross sections.

In addition, this book augments a solid foundation in the basic structural design theory of beams by:

• Providing coverage of thin-wall structure analysis and optimization techniques
• Applying computer numerical methods to classical design methods
• Developing computational solutions for cross-sectional properties and stresses using finite element analyses

Including access to an associated Web site with software for the analysis and design of any cross-sectional shape, Analysis and Design of Elastic Beams: Computational Methods is an essential reference for mechanical, aerospace, and civil engineers and designers working in the automotive, ship, and aerospace industries in product and process design, machine design, structural design, and design optimization, as well as students and researchers in these areas.

* Based on the new idea of gathering state of the art topics in Geometric Modeling together with techniques, applications, systems and tools
* The first book of its kind in that it incorporates several topics providing a class of practical solutions to problems in mathematical, engineering, and physical sciences
* Provides a valuable resource, focusing on interdisciplinary methods and affiliate research in the area

Theoretical molecular spectroscopy has been the subject of intense activity in the last decade as a result of the increasing availability of powerful computers. Computational Molecular Spectroscopy is the first book ever to provide a comprehensive treatment of modern compuational techniques for predicting/interpreting molecular spectra.
Comprised essentially of four main parts, the book is a must for research workers in high resolution molecular spectroscopy and in quantum chemistry. It is also highly useful to undergraduate and postgraduate students of physics and chemistry, who are just starting out in the field.
The four main areas covered include:

• Ab initio calculation of potential energy surfaces and other electronic properties of molecules
• Perturbation-theory-based and variational approaches to the calculation of spectroscopic data
• Theory of calculating rovibronic energies, including the Renner and Jahn-Teller effects
• Special topics of high current interest: highly excited states and local modes, semi-classical approaches, time-dependent phenomena, and the Carr-Parrinello approach.

While some rigging books focus too much on the theory of rigging and provide little instruction, others do the exact opposite and offer no reasoning behind the button-pushing. An Essential Introduction to Maya Character Rigging, 2nd Edition, however, offers a perfect balance. Cheryl Briggs' text is built for the classroom, with step-by-step tutorials that guide the reader through the rigging process. With vibrant screenshots and a plethora of helpful tips, this book provides a strong foundation in character rigging for anyone who wants to pursue 3D animation or more advanced rigging topics. Features Provides readers with fundamental techniques to give them a firm grasp on Maya character rigging. Thorough step-by-step tutorials, which provides instruction on how to create biped, quadruped, and prop rigs. Continuous updates and further support can be located at www.cherylcreates.com Cheryl Briggs (formerly Cabrera) is an award-winning animated short film director. She has advised and guided aspiring animators, game artists, and visual effects artists for 20 years. Since 2009, Cheryl has taught all aspects of production in the Character Animation specialization in the School of Visual Arts and Design at the University of Central Florida. She also taught as Professor of Animation at the Savannah College of Art and Design from 2001 to 2009. Cheryl is currently on the Board of Directors for the Animation Hall of Fame. She also is a member of the Special Interest Group on Computer Graphics and Interactive Techniques (SIGGRAPH), the International Animated Film Society (ASIFA-Hollywood), Women in Animation, Women in Film and Television, and the Society for Animation Studies. Cheryl is also an Autodesk Certified Professional and an Autodesk Certified Instructor in Maya. She is the author of An Essential Introduction to Maya Character Rigging (Focal Press, 2008), Reel Success: Creating Demo Reels and Animation Portfolios (Focal Press, 2013), and Animating Short Stories: Narrative Techniques and Visual Design (Bloomsbury Academic, 2019). Cheryl holds a B.A. and M.Ed. in Education and an M.F.A. in Computer Art with a specialization in 3D Animation. She is a digital artist and animator that blends the lines between digital imagery and the traditional painting medium. She has participated is numerous group and solo exhibitions in the United States and her work is featured in several private collections. Her award-winning students have been featured in animation festivals worldwide, and many have gone on to work within the entertainment industry.