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Modified mass-spring system for physically based deformation modeling

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Book Series: Karlsruhe transactions on biomedical engineering / Ed.: Karlsruhe Institute of Technology / Institute of Biomedical Engineering ISSN: 18645933 ISBN: 9783866447424 Year: Volume: 14 Pages: VII, 222 p. DOI: 10.5445/KSP/1000024308 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-30 20:02:00
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Mass-spring systems are considered the simplest and most intuitive of all deformable models. They are computationally efficient, and can handle large deformations with ease. But they suffer several intrinsic limitations. In this book a modified mass-spring system for physically based deformation modeling that addresses the limitations and solves them elegantly is presented. Several implementations in modeling breast mechanics, heart mechanics and for elastic images registration are presented.

The impact of inter-vehicle communication on vehicular traffic

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ISBN: 9783866444454 Year: Pages: XVI, 160 p. DOI: 10.5445/KSP/1000013827 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Computer Science
Added to DOAB on : 2019-07-30 20:01:58
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The work addresses communication networks established over radio equipped vehicles in our everyday road traffic, so called Vehicular Ad Hoc Networks (VANETs), and discusses their impact on two major goals, namely traffic safety and traffic efficiency. For both objectives, the thesis proposes an appropriate modeling of the essential building blocks Traffic, Communication and Application and enables impact assessment studies by means of implemented simulation tools.

Remote Sensed Data and Processing Methodologies for 3D Virtual Reconstruction and Visualization of Complex Architectures

ISBN: 9783038422372 9783038422389 Year: Pages: XVIII, 584 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Environmental Engineering
Added to DOAB on : 2016-08-26 13:37:10
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In recent years, the topic of 3D reconstruction and modeling of complex architectures from remotely acquired multiple data sources has been of growing interest. This “democratization” of 3D modeling processes and the large availability of data is, however, not always followed by reliable, affordable and powerful tools for realizing photo-realistic, metric, re-usable and semantic-aware 3D products. This should be a motivation to research, design, develop and validate novel easy-to-use, ease-to-learn and a low-cost framework for 3D modeling and further understanding of virtual environments using multiple data sources, so that the whole 3D modeling community has access to an affordable, transferable, functional and usable framework of methods and tools. This challenge causes several problems that should be addressed: from improving and testing the technical capabilities of new capturing devices, to the solution of problems resultant from large image blocks, from delivering Building Information Modeling (BIM) standards in order to provide new management approaches to replacing existing visualization tools with new working experiences such as Virtual and Augmented Reality or game-engine technology.

Semantic Business Process Modeling

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ISBN: 9783866445574 Year: Pages: XIV, 206 p. DOI: 10.5445/KSP/1000019630 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Business and Management
Added to DOAB on : 2019-07-30 20:02:02
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This book presents a process-oriented business modeling framework based on semantic technologies. The framework consists of modeling languages, methods, and tools that allow for semantic modeling of business motivation, business policies and rules, and business processes. Quality of the proposed modeling framework is evaluated based on the modeling content of SAP Solution Composer and several real-world business scenarios.

Scaling of Differential Equations

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Book Series: Simula SpringerBriefs on Computing ISBN: 9783319327259 9783319327266 Year: Pages: 138 DOI: 10.1007/978-3-319-32726-6 Language: English
Publisher: Springer
Subject: Mathematics
Added to DOAB on : 2017-01-24 17:59:55
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The book serves both as a reference for various scaled models with corresponding dimensionless numbers, and as a resource for learning the art of scaling. A special feature of the book is the emphasis on how to create software for scaled models, based on existing software for unscaled models.Scaling (or non-dimensionalization) is a mathematical technique that greatly simplifies the setting of input parameters in numerical simulations. Moreover, scaling enhances the understanding of how different physical processes interact in a differential equation model. Compared to the existing literature, where the topic of scaling is frequently encountered, but very often in only a brief and shallow setting, the present book gives much more thorough explanations of how to reason about finding the right scales. This process is highly problem dependent, and therefore the book features a lot of worked examples, from very simple ODEs to systems of PDEs, especially from fluid mechanics.The text is easily accessible and example-driven. The first part on ODEs fits even a lower undergraduate level, while the most advanced multiphysics fluid mechanics examples target the graduate level. The scientific literature is full of scaled models, but in most of the cases, the scales are just stated without thorough mathematical reasoning. This book explains how the scales are found mathematically.This book will be a valuable read for anyone doing numerical simulations based on ordinary or partial differential equations.

The Multi-Agent Transport Simulation MATSim

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ISBN: 9781909188754 9781909188761 9781909188778 9781909188785 Year: Pages: 618 DOI: 10.5334/baw Language: English
Publisher: Ubiquity Press Grant: FP7 Ideas: European Research Council - 249393
Subject: Computer Science --- Geology --- Earth Sciences --- Economics --- Science (General)
Added to DOAB on : 2016-08-19 11:01:19
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"The MATSim (Multi-Agent Transport Simulation) software project was started around 2006 with the goal of generating traffic and congestion patterns by following individual synthetic travelers through their daily or weekly activity programme. It has since then evolved from a collection of stand-alone C++ programs to an integrated Java-based framework which is publicly hosted, open-source available, automatically regression tested. It is currently used by about 40 groups throughout the world. This book takes stock of the current status. The first part of the book gives an introduction to the most important concepts, with the intention of enabling a potential user to set up and run basic simulations.The second part of the book describes how the basic functionality can be extended, for example by adding schedule-based public transit, electric or autonomous cars, paratransit, or within-day replanning. For each extension, the text provides pointers to the additional documentation and to the code base. It is also discussed how people with appropriate Java programming skills can write their own extensions, and plug them into the MATSim core.&#xD;The project has started from the basic idea that traffic is a consequence of human behavior, and thus humans and their behavior should be the starting point of all modelling, and with the intuition that when simulations with 100 million particles are possible in computational physics, then behavior-oriented simulations with 10 million travelers should be possible in travel behavior research. The initial implementations thus combined concepts from computational physics and complex adaptive systems with concepts from travel behavior research. The third part of the book looks at theoretical concepts that are able to describe important aspects of the simulation system; for example, under certain conditions the code becomes a Monte Carlo engine sampling from a discrete choice model. Another important aspect is the interpretation of the MATSim score as utility in the microeconomic sense, opening up a connection to benefit cost analysis.&#xD;Finally, the book collects use cases as they have been undertaken with MATSim. All current users of MATSim were invited to submit their work, and many followed with sometimes crisp and short and sometimes longer contributions, always with pointers to additional references.&#xD;We hope that the book will become an invitation to explore, to build and to extend agent-based modeling of travel behavior from the stable and well tested core of MATSim documented here."

Selected Papers from the 14th Estuarine and Coastal Modeling Conference

ISBN: 9783038423621 9783038423638 Year: Pages: VIII, 412 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Hydraulic Engineering
Added to DOAB on : 2017-04-18 12:12:22
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The 14th Estuarine and Coastal Modeling Conference provided a venue for commercial, academic, and government scientists and engineers from around the world to present and discuss the latest results and techniques in applied estuarine and coastal modeling. Prospective authors were invited to submit papers on a wide range of topic areas, including:Coastal ResiliencyPollutant Transport and Water Quality PredictionModeling Techniques and Sensitivity StudiesModel AssessmentModeling Specific Estuarine and Coastal SystemsModel Output Visualization and Analysis TechniquesWave and Sediment Transport ModelingModeling of Chemicals and FloatablesOil Spill Transport and Fate ModelingInverse MethodsFacility Siting and CSO StudiesData Assimilation TechniquesNowcast/Forecast Modeling SystemsCoupled Models of Terrestrial, Atmospheric, Coastal SystemsModeling Systems with Strong Buoyancy ForcingRisk AnalysisThis Special Issue presents a selection of papers from the conference; the papers give insight, both into current research and commercial developments, and highlight areas where further research or engineering studies are required.

Morphological Plant Modeling: Unleashing Geometric and Topological Potential within the Plant Sciences

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889452972 Year: Pages: 296 DOI: 10.3389/978-2-88945-297-2 Language: English
Publisher: Frontiers Media SA
Subject: Science (General) --- Botany
Added to DOAB on : 2018-02-27 16:16:44
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An increasing population faces the growing demand for agricultural products and accurate global climate models that account for individual plant morphologies to predict favorable human habitat. Both demands are rooted in an improved understanding of the mechanistic origins of plant development. Such understanding requires geometric and topological descriptors to characterize the phenotype of plants and its link to genotypes. However, the current plant phenotyping framework relies on simple length and diameter measurements, which fail to capture the exquisite architecture of plants. The Research Topic “Morphological Plant Modeling: Unleashing Geometric and Topological Potential within the Plant Sciences” is the result of a workshop held at National Institute for Mathematical and Biological Synthesis (NIMBioS) in Knoxville, Tennessee. From 2.-4. September 2015 over 40 scientists from mathematics, computer science, engineering, physics and biology came together to set new frontiers in combining plant phenotyping with recent results from shape theory at the interface of geometry and topology. In doing so, the Research Topic synthesizes the views from multiple disciplines to reveal the potential of new mathematical concepts to analyze and quantify the relationship between morphological plant features. As such, the Research Topic bundles examples of new mathematical techniques including persistent homology, graph-theory, and shape statistics to tackle questions in crop breeding, developmental biology, and vegetation modeling. The challenge to model plant morphology under field conditions is a central theme of the included papers to address the problems of climate change and food security, that require the integration of plant biology and mathematics from geometry and topology research applied to imaging and simulation techniques. The introductory white paper written by the workshop participants identifies future directions in research, education and policy making to integrate biological and mathematical approaches and to strengthen research at the interface of both disciplines.

Feature Papers for Celebrating the Fifth Anniversary of the Founding of Processes

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ISBN: 9783038975250 / 9783038975267 Year: Pages: 372 DOI: 10.3390/books978-3-03897-526-7 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Chemical Engineering --- General and Civil Engineering
Added to DOAB on : 2019-01-24 12:02:18
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Processes” is a commonly used term to describe engineered systems such as oil refineries, polymer production plants, and pharmaceutical manufacturing processes that serve a commercial and societal purpose. However, the term can also capture the underlying processes that drive the behavior of complex natural systems such as communities of different organisms in the environment and networked collections of neurons in the human brain. This book provides a representative overview of current challenges and recent advances in the broadly-defined “processes” field. Contributions from leading researchers in the field are conveniently ordered according to five applications domains: chemical systems, biological systems, materials processes, computational methods, and other related topics. The 19 contributions demonstrate the broad range of application domains within the process field, including fluid flow systems, fuel gases, chemical production, polymer manufacturing, food processing, protein synthesis and separation, pharmaceutical production, and water systems. This collection shows that “processes” remain a vibrant area of research, and continued advances in the field can be expected to have a positive impact on our economy, environment, and quality of life.

Modeling of Helium Bubble Nucleation and Growth in Neutron Irradiated RAFM Steels

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Book Series: Schriftenreihe des Instituts für Angewandte Materialien, Karlsruher Institut für Technologie ISSN: 21929963 ISBN: 9783866449015 Year: Volume: 6 Pages: XXII, 159 p. DOI: 10.5445/KSP/1000029282 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-30 20:01:59
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Reduced Activation Ferritic/Martensitic (RAFM) steels are first candidate structural materials in future fusion technology. In this work a physically based model using Rate Theory is developed to describe nucleation and growth of helium bubbles in neutron irradiated RAFM steels. Several modifications of the basic diffusion limited model are presented allowing a comprehensive view of clustering effects and their influence on expected helium bubble size distributions.

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