Diffusive Geometries

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Diffusive Geometries

Author : Honghao Deng
Publisher : Honghao Deng
Page : 44 pages
File Size : 53,7 Mb
Release : 2018-05-30
Category : Computers
ISBN : 8210379456XXX

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Diffusive Geometries by Honghao Deng Pdf

Architecture primarily serves as a way to create and control the environment around us. Unlike natural weather, climate conditions in architecture are often static and binary, with no diffusion in between. As a result, sensory experiences that are directly accessible outdoors, like atmospheric quality, diffusiveness, and flow, are completely excluded from the indoors. The climate is discretized in space into strict self-contained, functional units, where wetness is kept in wet spaces yet other areas are completely dry. Many of these weather experiences have certain architectural qualities. This project uses vapor as a medium to create the experience of micro-climates and weather conditions from the outside, and bring them back inside architecture as tectonic elements that modulate visibility, create cooling gradients, and produce spatial patterns in a controlled manner. The three main elements are: point – vapor vertex ring, line – vapor tornado, plane – vapor wall. The focused and diffused conditions of vapor enable both localized and global conditions with soft boundaries. Imagine a future where architects not only sculpt their ideal space but also control the weather inside: one corner feels like the Saharan Desert, while the other behaves like the Amazon rainforest. In one corner, an early morning mist greets the contemplative mind, and in the center space, a focused tornado vapor attracts a gathering crowd. The interior space no longer acts like static and binary units—with clear boundaries like rain for shower, snow for fridge, or sun for light—but like dynamic, diffused, and phenomenal experiences.

Diffusive Geometries

Author : Honghao Deng
Publisher : Honghao Deng
Page : 44 pages
File Size : 55,8 Mb
Release : 2020-01-21
Category : Computers
ISBN : 9781714319510

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Diffusive Geometries by Honghao Deng Pdf

Architecture primarily serves as a way to create and control the environment around us. Unlike natural weather, climate conditions in architecture are often static and binary, with no diffusion in between. As a result, sensory experiences that are directly accessible outdoors, like atmospheric quality, diffusiveness, and flow, are completely excluded from the indoors. The climate is discretized in space into strict self-contained, functional units, where wetness is kept in wet spaces yet other areas are completely dry. Many of these weather experiences have certain architectural qualities. This project uses vapor as a medium to create the experience of micro-climates and weather conditions from the outside, and bring them back inside architecture as tectonic elements that modulate visibility, create cooling gradients, and produce spatial patterns in a controlled manner. The three main elements are: point – vapor vertex ring, line – vapor tornado, plane – vapor wall. The focused and diffused conditions of vapor enable both localized and global conditions with soft boundaries. Imagine a future where architects not only sculpt their ideal space but also control the weather inside: one corner feels like the Saharan Desert, while the other behaves like the Amazon rainforest. In one corner, an early morning mist greets the contemplative mind, and in the center space, a focused tornado vapor attracts a gathering crowd. The interior space no longer acts like static and binary units—with clear boundaries like rain for shower, snow for fridge, or sun for light—but like dynamic, diffused, and phenomenal experiences.

Diffusion in Minerals and Melts

Author : Youxue Zahng,Daniele J. Cherniak
Publisher : Walter de Gruyter GmbH & Co KG
Page : 1056 pages
File Size : 42,9 Mb
Release : 2018-12-17
Category : Science
ISBN : 9781501508394

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Diffusion in Minerals and Melts by Youxue Zahng,Daniele J. Cherniak Pdf

Volume 72 of Reviews in Mineralogy and Geochemistry represents an extensive compilation of the material presented by the invited speakers at a short course on Diffusion in Minerals and Melts held prior (December 11-12, 2010) to the Annual fall meeting of the American Geophysical Union in San Francisco, California. The short course was held at the Napa Valley Marriott Hotel and Spa in Napa, California and was sponsored by the Mineralogical Society of America and the Geochemical Society.

Diffusive Spreading in Nature, Technology and Society

Author : Armin Bunde,Jürgen Caro,Christian Chmelik,Jörg Kärger,Gero Vogl
Publisher : Springer Nature
Page : 520 pages
File Size : 45,8 Mb
Release : 2023-05-08
Category : Science
ISBN : 9783031059469

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Diffusive Spreading in Nature, Technology and Society by Armin Bunde,Jürgen Caro,Christian Chmelik,Jörg Kärger,Gero Vogl Pdf

What do the movements of molecules and the migration of humans have in common? How does the functionality of our brain tissue resemble the flow of traffic in New York City? How can understanding the spread of ideas, rumors, and languages help us tackle the spread a pandemic? This book provides an illuminating look into these seemingly disparate topics by exploring and expertly communicating the fundamental laws that govern the spreading and diffusion of objects. A collection of leading scientists in disciplines as diverse as epidemiology, linguistics, mathematics, and physics discuss various spreading phenomena relevant to their own fields, revealing astonishing similarities and correlations between the objects of study—be they people, particles, or pandemics. This updated and expanded second edition of an award-winning book introduces timely coverage of a subject with the greatest societal impact in recent memory—the global fight against COVID-19. Winner of the 2019 Literature Prize of the German Chemical Industry Fund and brainchild of the international and long-running Diffusion Fundamentals conference series, this book targets an interdisciplinary readership, featuring an introductory chapter that sets the stage for the topics discussed throughout. Each chapter provides ample opportunity to whet the appetite of those readers seeking a more in-depth treatment, making the book also useful as supplementary reading in appropriate courses dealing with complex systems, mass transfer, and network theory.

Geometry-Driven Diffusion in Computer Vision

Author : Bart M. Haar Romeny
Publisher : Springer Science & Business Media
Page : 461 pages
File Size : 49,6 Mb
Release : 2013-03-14
Category : Computers
ISBN : 9789401716994

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Geometry-Driven Diffusion in Computer Vision by Bart M. Haar Romeny Pdf

Scale is a concept the antiquity of which can hardly be traced. Certainly the familiar phenomena that accompany sc ale changes in optical patterns are mentioned in the earliest written records. The most obvious topological changes such as the creation or annihilation of details have been a topic to philosophers, artists and later scientists. This appears to of fascination be the case for all cultures from which extensive written records exist. For th instance, chinese 17 c artist manuals remark that "distant faces have no eyes" . The merging of details is also obvious to many authors, e. g. , Lucretius mentions the fact that distant islands look like a single one. The one topo logical event that is (to the best of my knowledge) mentioned only late (by th John Ruskin in his "Elements of drawing" of the mid 19 c) is the splitting of a blob on blurring. The change of images on a gradual increase of resolu tion has been a recurring theme in the arts (e. g. , the poetic description of the distant armada in Calderon's The Constant Prince) and this "mystery" (as Ruskin calls it) is constantly exploited by painters.

Diffusion Tensor for Slab Geometry

Author : Joe R. Beeler (Jr.)
Publisher : Unknown
Page : 16 pages
File Size : 54,8 Mb
Release : 1959
Category : Diffusion
ISBN : UOM:39015086422808

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Diffusion Tensor for Slab Geometry by Joe R. Beeler (Jr.) Pdf

Analysis and Geometry of Markov Diffusion Operators

Author : Dominique Bakry,Ivan Gentil,Michel Ledoux
Publisher : Springer Science & Business Media
Page : 555 pages
File Size : 43,7 Mb
Release : 2013-11-18
Category : Mathematics
ISBN : 9783319002279

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Analysis and Geometry of Markov Diffusion Operators by Dominique Bakry,Ivan Gentil,Michel Ledoux Pdf

The present volume is an extensive monograph on the analytic and geometric aspects of Markov diffusion operators. It focuses on the geometric curvature properties of the underlying structure in order to study convergence to equilibrium, spectral bounds, functional inequalities such as Poincaré, Sobolev or logarithmic Sobolev inequalities, and various bounds on solutions of evolution equations. At the same time, it covers a large class of evolution and partial differential equations. The book is intended to serve as an introduction to the subject and to be accessible for beginning and advanced scientists and non-specialists. Simultaneously, it covers a wide range of results and techniques from the early developments in the mid-eighties to the latest achievements. As such, students and researchers interested in the modern aspects of Markov diffusion operators and semigroups and their connections to analytic functional inequalities, probabilistic convergence to equilibrium and geometric curvature will find it especially useful. Selected chapters can also be used for advanced courses on the topic.

Diffusion Models of Environmental Transport

Author : Bruce Choy,Danny D. Reible
Publisher : CRC Press
Page : 202 pages
File Size : 48,5 Mb
Release : 2017-12-14
Category : Science
ISBN : 9781351455060

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Diffusion Models of Environmental Transport by Bruce Choy,Danny D. Reible Pdf

Fate and transport models are critical components in the determination of the exposure to and risk from hazardous contaminants. Analytical models are preferable because they are generally more accessible, more reliable, and require fewer computational resources. Surprisingly, until today, only a limited number of analytical models have been accessible in the literature. Now, there is Diffusion Models of Environmental Transport, which provides more than 40 analytical models of diffusion and advective-diffusion in one, two, and three layer systems, subject to a wide range of boundary and initial conditions. This text illustrates applications to contaminant transport in sediments and soils, including porewater and vapor transport, and also provides Mathcad spreadsheets to aid in the use of these models. The authors supply complete details of the solutions to the models for those who wish for a deeper understanding. For others, who do not have the time or the need, the solutions themselves are ready to be picked up and used. Reible and Choy use their 20-plus years of cumulative experience to create a thorough exploration of fate and transport models. This comprehensive text furnishes an invaluable reference for students and environmental professionals.

On the Geometry of Diffusion Operators and Stochastic Flows

Author : K.D. Elworthy,Y. Le Jan,Xue-Mei Li
Publisher : Springer
Page : 121 pages
File Size : 45,9 Mb
Release : 2007-01-05
Category : Mathematics
ISBN : 9783540470229

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On the Geometry of Diffusion Operators and Stochastic Flows by K.D. Elworthy,Y. Le Jan,Xue-Mei Li Pdf

Stochastic differential equations, and Hoermander form representations of diffusion operators, can determine a linear connection associated to the underlying (sub)-Riemannian structure. This is systematically described, together with its invariants, and then exploited to discuss qualitative properties of stochastic flows, and analysis on path spaces of compact manifolds with diffusion measures. This should be useful to stochastic analysts, especially those with interests in stochastic flows, infinite dimensional analysis, or geometric analysis, and also to researchers in sub-Riemannian geometry. A basic background in differential geometry is assumed, but the construction of the connections is very direct and itself gives an intuitive and concrete introduction. Knowledge of stochastic analysis is also assumed for later chapters.

Diffusion in Natural Porous Media

Author : Peter Grathwohl
Publisher : Springer Science & Business Media
Page : 198 pages
File Size : 54,9 Mb
Release : 2012-12-06
Category : Science
ISBN : 9781461556831

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Diffusion in Natural Porous Media by Peter Grathwohl Pdf

Diffusion in Natural Porous Media: Contaminant Transport, Sorption/Desorption and Dissolution Kinetics introduces the general principles of diffusion in the subsurface environment and discusses the implications for the fate and transport of contaminants in soils and groundwater. Emphasis is placed on sorption/desorption and the dissolution kinetics of organic contaminants, both of which are limited by the slow speed of molecular diffusion. Diffusion in Natural Porous Media: Contaminant Transport, Sorption/Desorption and Dissolution Kinetics compiles methods for calculating the diffusion coefficients of organic compounds (in aqueous solution or vapor phase) in natural porous media. The author uses analytical solutions of Fick's 2nd law and some simple numerical models to model diffusive transport under various initial and boundary conditions. A number of these models may be solved using spreadsheets. The book examines sorption/desorption rates of organic compounds in various soils and aquifer materials, and also examines the dissolution kinetics of nonaqueous phase liquids in aquifers, in both the trapped residual phase and in pools. Diffusion in Natural Porous Media: Contaminant Transport, Sorption/Desorption and Dissolution Kinetics concludes with a discussion of the impact of slow diffusion processes on soil and groundwater decontamination and the implications of these processes for groundwater risk assessment.

The Roll-diffusion Bonding of Structural Shapes and Panels

Author : J. A. Houck,E. S. Bartlett
Publisher : Unknown
Page : 48 pages
File Size : 45,5 Mb
Release : 1967
Category : Diffusion bonding (Metals)
ISBN : UOM:39015095158468

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The Roll-diffusion Bonding of Structural Shapes and Panels by J. A. Houck,E. S. Bartlett Pdf

The report summarizes the progress in recent and current research and development programs to advance the state of the art of the roll-diffusion-bonding process as applied to the manufacture of structural panels and shapes. At the present time, there are seven such NASA and DOD programs in progress. These are reviewed in the report. (Author).

Parametric Studies with an Atmospheric Diffusion Model that Assesses Topic Fuel Hazards Due to the Ground Clouds Generated by Rocket Launches

Author : Roger Bell Stewart,William L. Grose
Publisher : Unknown
Page : 72 pages
File Size : 53,6 Mb
Release : 1975
Category : Air
ISBN : UIUC:30112106633016

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Parametric Studies with an Atmospheric Diffusion Model that Assesses Topic Fuel Hazards Due to the Ground Clouds Generated by Rocket Launches by Roger Bell Stewart,William L. Grose Pdf

Diffusion-Wave Fields

Author : Andreas Mandelis
Publisher : Springer Science & Business Media
Page : 758 pages
File Size : 41,9 Mb
Release : 2001-06-27
Category : Science
ISBN : 0387951490

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Diffusion-Wave Fields by Andreas Mandelis Pdf

Develops a unified mathematical framework for treating a wide variety of diffusion-related periodic phenomena in such areas as heat transfer, electrical conduction, and light scattering. Deriving and using Green functions in one and higher dimensions to provide a unified approach, the author develops the properties of diffusion-wave fields first for the well-studied case of thermal-wave fields and then applies the methods to nonthermal fields.

Multicomponent Diffusion

Author : E. L. Cussler
Publisher : Elsevier
Page : 187 pages
File Size : 49,7 Mb
Release : 2013-10-22
Category : Science
ISBN : 9781483102009

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Multicomponent Diffusion by E. L. Cussler Pdf

Multicomponent Diffusion discusses the multicomponent diffusion of the three phases of matter. The book is comprised of nine chapters that cover studies of multicomponent diffusion and mass transfer with an emphasis on the chemical characteristics responsible for multicomponent diffusion. Chapter 1 provides an introductory discourse about multicomponent diffusion. Chapter 2 discusses binary diffusion, while Chapter 3 covers multicomponent flux equation. The measurement of ternary diffusion and the estimation of ternary diffusion coefficients are also explained in the book. A chapter then covers the interacting systems, and the subsequent chapter talks about membranes without mobile carriers. The text also discusses carrier-containing membranes and the multicomponent mass transfer. The book will be of great use to researchers and professionals whose work requires a good understanding of multicomponent diffusion.