The Getme Mesh Smoothing Framework
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The Getme Mesh Smoothing Framework
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Author : Dimitris Vartziotis
language : en
Publisher: CRC Press
Release Date : 2018-12-07
The Getme Mesh Smoothing Framework written by Dimitris Vartziotis and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-12-07 with Computers categories.
High quality meshes play a key role in many applications based on digital modeling and simulation. The finite element method is a paragon for such an approach and it is well known that quality meshes can significantly improve computational efficiency and solution accuracy of this method. Therefore, a lot of effort has been put in methods for improving mesh quality. These range from simple geometric approaches, like Laplacian smoothing, with a high computational efficiency but possible low resulting mesh quality, to global optimization-based methods, resulting in an excellent mesh quality at the cost of an increased computational and implementational complexity. The geometric element transformation method (GETMe) aims to fill the gap between these two approaches. It is based on geometric mesh element transformations, which iteratively transform polygonal and polyhedral elements into their regular counterparts or into elements with a prescribed shape. GETMe combines a Laplacian smoothing-like computational efficiency with a global optimization-like effectiveness. The method is straightforward to implement and its variants can also be used to improve tangled and anisotropic meshes. This book describes the mathematical theory of geometric element transformations as foundation for mesh smoothing. It gives a thorough introduction to GETMe-based mesh smoothing and its algorithms providing a framework to focus on effectively improving key mesh quality aspects. It addresses the improvement of planar, surface, volumetric, mixed, isotropic, and anisotropic meshes and addresses aspects of combining mesh smoothing with topological mesh modification. The advantages of GETMe-based mesh smoothing are demonstrated by the example of various numerical tests. These include smoothing of real world meshes from engineering applications as well as smoothing of synthetic meshes for demonstrating key aspects of GETMe-based mesh improvement. Results are compared with those of other smoothing methods in terms of runtime behavior, mesh quality, and resulting finite element solution efficiency and accuracy. Features: • Helps to improve finite element mesh quality by applying geometry-driven mesh smoothing approaches. • Supports the reader in understanding and implementing GETMe-based mesh smoothing. • Discusses aspects and properties of GETMe smoothing variants and thus provides guidance for choosing the appropriate mesh improvement algorithm. • Addresses smoothing of various mesh types: planar, surface, volumetric, isotropic, anisotropic, non-mixed, and mixed. • Provides and analyzes geometric element transformations for polygonal and polyhedral elements with regular and non-regular limits. • Includes a broad range of numerical examples and compares results with those of other smoothing methods.
The Getme Mesh Smoothing Framework
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Author : Dimitris P. Vartziotis
language : en
Publisher: CRC Press
Release Date : 2018-12-07
The Getme Mesh Smoothing Framework written by Dimitris P. Vartziotis and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-12-07 with Computers categories.
High quality meshes play a key role in many applications based on digital modeling and simulation. The finite element method is a paragon for such an approach and it is well known that quality meshes can significantly improve computational efficiency and solution accuracy of this method. Therefore, a lot of effort has been put in methods for improving mesh quality. These range from simple geometric approaches, like Laplacian smoothing, with a high computational efficiency but possible low resulting mesh quality, to global optimization-based methods, resulting in an excellent mesh quality at the cost of an increased computational and implementational complexity. The geometric element transformation method (GETMe) aims to fill the gap between these two approaches. It is based on geometric mesh element transformations, which iteratively transform polygonal and polyhedral elements into their regular counterparts or into elements with a prescribed shape. GETMe combines a Laplacian smoothing-like computational efficiency with a global optimization-like effectiveness. The method is straightforward to implement and its variants can also be used to improve tangled and anisotropic meshes. This book describes the mathematical theory of geometric element transformations as foundation for mesh smoothing. It gives a thorough introduction to GETMe-based mesh smoothing and its algorithms providing a framework to focus on effectively improving key mesh quality aspects. It addresses the improvement of planar, surface, volumetric, mixed, isotropic, and anisotropic meshes and addresses aspects of combining mesh smoothing with topological mesh modification. The advantages of GETMe-based mesh smoothing are demonstrated by the example of various numerical tests. These include smoothing of real world meshes from engineering applications as well as smoothing of synthetic meshes for demonstrating key aspects of GETMe-based mesh improvement. Results are compared with those of other smoothing methods in terms of runtime behavior, mesh quality, and resulting finite element solution efficiency and accuracy. Features: • Helps to improve finite element mesh quality by applying geometry-driven mesh smoothing approaches. • Supports the reader in understanding and implementing GETMe-based mesh smoothing. • Discusses aspects and properties of GETMe smoothing variants and thus provides guidance for choosing the appropriate mesh improvement algorithm. • Addresses smoothing of various mesh types: planar, surface, volumetric, isotropic, anisotropic, non-mixed, and mixed. • Provides and analyzes geometric element transformations for polygonal and polyhedral elements with regular and non-regular limits. • Includes a broad range of numerical examples and compares results with those of other smoothing methods.
Proceedings Of The 22nd International Meshing Roundtable
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Author : Josep Sarrate
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-09-03
Proceedings Of The 22nd International Meshing Roundtable written by Josep Sarrate and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-09-03 with Technology & Engineering categories.
This volume contains the articles presented at the 22nd International Meshing Roundtable (IMR) organized, in part, by Sandia National Laboratories and was held on Oct 13-16, 2013 in Orlando, Florida, USA. The first IMR was held in 1992, and the conference series has been held annually since. Each year the IMR brings together researchers, developers, and application experts in a variety of disciplines, from all over the world, to present and discuss ideas on mesh generation and related topics. The technical papers in this volume present theoretical and novel ideas and algorithms with practical potential, as well as technical applications in science and engineering, geometric modeling, computer graphics and visualization.
Mesh Generation
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Author : Pascal Jean Frey
language : en
Publisher: Hermes Science Publications
Release Date : 2000
Mesh Generation written by Pascal Jean Frey and has been published by Hermes Science Publications this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Mathematics categories.
The numerical simulation of physical problems expressed in terms of partial differential equations (so-called PDE's) using a finite element, finite volume, boundary element, or any other numerical method requires the discretization of the domain of interest into a set of elements, i.e. a mesh. The differential equations are approximated by a set of algebraic equations on this mesh, this set being then solved to provide the approximate solution of the partial differential system over the field. The discretization requires certain properties for the solution to be exploitable and must at least conform to all domain boundaries in order to accurately represent boundary conditions. Consequently, the mesh generation stage, as an essential pre-requisite, is of utmost importance in the computational schemes, as it is related to the convergence of the computational scheme as well as to the accuracy of the numerical solutions. There is indeed a variety of algorithms suitable to produce such meshes. Some of these methods are designed to handle specific geometric situations while others can be used in a more general context. User-driven, semi-automatic as well as fully automatic methods exist leading to structured, unstructured or mixed meshes. The mesh generation problems are mainly related to the boundary meshing (line, curve and surface meshing) and domain meshing issues (planar domain or volumetric domain). Numerous computational issues must be carefully addressed for designing reliable and robust meshing algorithms. These issues concern computer-related data structures and algorithms (low-level routines) as well as advanced data structures and computational schemes (high-level routines). In this regard, basic computational tools, geometric and discrete geometric notions, computational and mesh data structures, element and mesh definitions are of significant importance. The aim of this book is to provide a comprehensive survey of the different algorithms and data structures useful for triangulation and meshing construction. In addition, several aspects will also be described, for instance mesh modification tools, mesh evaluation criteria, mesh optimization, including even adaptive mesh construction as well as parallel meshing techniques.
Less Is More
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Author : Jason Hickel
language : en
Publisher: Random House
Release Date : 2020-08-13
Less Is More written by Jason Hickel and has been published by Random House this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-08-13 with Business & Economics categories.
'A powerfully disruptive book for disrupted times ... If you're looking for transformative ideas, this book is for you.' KATE RAWORTH, economist and author of Doughnut Economics A Financial Times Book of the Year ______________________________________ Our planet is in trouble. But how can we reverse the current crisis and create a sustainable future? The answer is: DEGROWTH. Less is More is the wake-up call we need. By shining a light on ecological breakdown and the system that's causing it, Hickel shows how we can bring our economy back into balance with the living world and build a thriving society for all. This is our chance to change course, but we must act now. ______________________________________ 'A masterpiece... Less is More covers centuries and continents, spans academic disciplines, and connects contemporary and ancient events in a way which cannot be put down until it's finished.' DANNY DORLING, Professor of Geography, University of Oxford 'Jason is able to personalise the global and swarm the mind in the way that insects used to in abundance but soon shan't unless we are able to heed his beautifully rendered warning.' RUSSELL BRAND 'Jason Hickel shows that recovering the commons and decolonizing nature, cultures, and humanity are necessary conditions for hope of a common future in our common home.' VANDANA SHIVA, author of Making Peace With the Earth 'This is a book we have all been waiting for. Jason Hickel dispels ecomodernist fantasies of "green growth". Only degrowth can avoid climate breakdown. The facts are indisputable and they are in this book.' GIORGIS KALLIS, author of Degrowth 'Capitalism has robbed us of our ability to even imagine something different; Less is More gives us the ability to not only dream of another world, but also the tools by which we can make that vision real.' ASAD REHMAN, director of War on Want 'One of the most important books I have read ... does something extremely rare: it outlines a clear path to a sustainable future for all.' RAOUL MARTINEZ, author of Creating Freedom 'Jason Hickel takes us on a profound journey through the last 500 years of capitalism and into the current crisis of ecological collapse. Less is More is required reading for anyone interested in what it means to live in the Anthropocene, and what we can do about it.' ALNOOR LADHA, co-founder of The Rules 'Excellent analysis...This book explores not only the systemic flaws but the deeply cultural beliefs that need to be uprooted and replaced.' ADELE WALTON
Cracking The Pm Career
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Author : Jackie Bavaro
language : en
Publisher: Careercup
Release Date : 2021-01-26
Cracking The Pm Career written by Jackie Bavaro and has been published by Careercup this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-01-26 with Business & Economics categories.
Product management is a big role, and this a big book.From the authors of the best-selling Cracking the PM Interview comes the comprehensive guide to the skills, frameworks, and practices to become a great product manager. It will help you level-up your skills and career from your first product management role through product leadership.You'll learn how to:* Design high-quality products that delight users and solve people's needs.* Run and deliver your projects quickly, smoothly, and effectively.* Create product visions and strategies to set direction and optimize for long-term impact.* Lead people and influence without authority.* Manage people, develop great PMs, build great teams, and create great product organizations.* Manage your career so you can translate your efforts into the recognition you deserve.This book will teach you the reliable frameworks and best practices that improve your chances of shipping a successful product. The frameworks won't transform you into a great product manager overnight or guarantee that your products never fail, but they'll help you avoid the most common problems and give you the structure to start experimenting, reflecting, and improving.Topics include:* Getting Started: the product life cycle; the first 90 days* Product Skills: user research; A/B tests; problem solving frameworks; systems thinking; product discovery; design sprints; ethical product design; technical terms and concepts; product documentation (specs and PRDs)* Execution Skills: agile project management; minimum viable products (MVPs); incremental development; product launches; time management; overcoming obstacles* Strategic Skills: product vision; strategy; roadmaps; goals and OKRs* Leadership Skills: growth mindset; ownership mentality; influencing without authority; stakeholder management; collaboration; communication; inspiring a team; mentoring; working with designers, engineers, and executives* People Management Skills: becoming a people manager; being a member of the leadership team; reviewing work; holding people accountable; coaching and development; recruiting and interviewing; product processes; organizational structures* Careers: career ladders; career goals; partnering with your manager; picking the right team; negotiations; networking; handling bad situations; career options beyond PM
Fishing For Fairness
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Author : Michael Fabinyi
language : en
Publisher:
Release Date : 2012
Fishing For Fairness written by Michael Fabinyi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
Fishing for Fairness develops an explicitly cultural perspective on environmental politics in the Philippines by analysing the responses of fishers to marine resource regulations. In the resource frontier of the Calamianes Islands, fishing, conservation and tourism provide the context where competing visions of how to engage with marine resources are played out. The book draws on data from ethnographic fieldwork with fishers, government and NGO officials, fish traders and tourism operators to show how the strategic responses of fishers to management initiatives are couched within particular cultural idioms. Tapping into broader notions of morality in the Philippines, fishers express a discourse that emphasises their poverty and the obligations of the wealthy to treat them with fairness. By deploying this discourse, fishers are able to reframe what are-on the surface-questions of environmental management into issues about poverty within particular social relationships. By using a cultural political ecology framework to analyse fishers' responses to regulation, the book emphasises the distinctive ways in which marginalised people in the Philippines resist and reframe resource management initiatives. Fishing for Fairness will appeal to both academics and policy makers interested in marine resource management, political ecology, anthropology and development studies particularly throughout the Asia-Pacific.
Fencing In Aids
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Author : Holly Wardlow
language : en
Publisher: Univ of California Press
Release Date : 2020-09-21
Fencing In Aids written by Holly Wardlow and has been published by Univ of California Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-09-21 with Social Science categories.
A free open access ebook is available upon publication. Learn more at www.luminosoa.org. In this vitally important book, medical anthropologist Holly Wardlow takes readers through a ten-year history of the AIDS epidemic in Tari, Papua New Guinea, focusing on the political and economic factors that make women vulnerable to HIV and on their experiences with antiretroviral therapy. Alive with the women’s stories about being trafficked to gold mines, resisting polygynous marriages, and struggling to be perceived as morally upright, Fencing in AIDS demonstrates that being female shapes every aspect of the AIDS epidemic. Offering crucial insights into the anthropologies of mining, ethics, and gender, this is essential reading for scholars and professionals addressing the global AIDS crisis today.
Robust Monte Carlo Methods For Light Transport Simulation
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Author : Eric Veach
language : en
Publisher:
Release Date : 1998
Robust Monte Carlo Methods For Light Transport Simulation written by Eric Veach and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Computer algorithms categories.
The Improv Handbook
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Author : Tom Salinsky
language : en
Publisher: Bloomsbury Publishing
Release Date : 2017-10-19
The Improv Handbook written by Tom Salinsky and has been published by Bloomsbury Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-10-19 with Performing Arts categories.
The Improv Handbook is the most comprehensive, smart, helpful and inspiring guide to improv available today. Applicable to comedians, actors, public speakers and anyone who needs to think on their toes, it features a range of games, interviews, descriptions and exercises that illuminate and illustrate the exciting world of improvised performance. First published in 2008, this second edition features a new foreword by comedian Mike McShane, as well as new exercises on endings, managing blind offers and master-servant games, plus new and expanded interviews with Keith Johnstone, Neil Mullarkey, Jeffrey Sweet and Paul Rogan. The Improv Handbook is a one-stop guide to the exciting world of improvisation. Whether you're a beginner, an expert, or would just love to try it if you weren't too scared, The Improv Handbook will guide you every step of the way.