2 edition of Spatial Diffusion (Ccg Resource Papers Series, No 4) found in the catalog.
Spatial Diffusion (Ccg Resource Papers Series, No 4)
P. R. Gould
by Assn of Amer Geographers
Written in English
|The Physical Object|
A rational treatment for the spatial diffusion of a biological population can be found in [2J, where the basic equations are derived by applying the usual arguments of rational continuum mechanics. In (2), models are proposed for the spatial diffusion of biological species which migrate following laws other than random by: 4. Diffusion is a process of passive transport in which molecules move from an area of higher concentration to one of lower concentration. Describe diffusion and the factors that affect how materials move across the cell membrane. Substances diffuse according to their concentration gradient; within a system, different substances in the medium will.
In the jargon of economics, the topic is the spatial diffusion of Pharmaceuticals. The purpose is to identify the major factors influencing the time taken for drugs to spread around the world. Delay in the arrival of pharmaceuticals, especially those involving major therapeutic advance, is a cause for concern. Innovation Difusim as a Spatial Process, by TORSTEN HAGERSTRAND. Postscript and translation by A. Pred. Chicago and London: Uni- versity of Chicago Press, pp., figs., maps, tables.$ Hagerstrand’s work on the diffusion of innovation is of major.
Book: Innovation diffusion as a spatial process. pp pp. Abstract: The spread of innovations innovations Subject Category: Miscellaneous see more details is measured by mapping their distribution at successive periods, a technique with considerable methodological significance for various areas of social science by: “Spatial diffusion. Diffusion is defined as the geographic spread of protest activity and is measured as the number of cities involved in protest activity in a given week.” —CONCESSIONS, REPRESSION, AND POLITICAL PROTEST IN THE IRANIAN REVOLUTION*.
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In this concise, clear introduction, the authors describe the theory of spatial diffusion, its method of measurement and many of its applications. The seminal work of Torsten Hagerstrand, who introduced the original spatial model of diffusion, is : Spatial Diffusion (Scientific Geography Series) by Richard Morrill (Author), Gary L.
Gaile (Author), Grant Ian Thrall (Author)Authors: Grant Ian Thrall, Spatial Diffusion book Morrill, Gary L. Gaile. This book addresses the problem of modelling spatial effects in ecology and population dynamics using reaction-diffusion models.
* Rapidly expanding area of research for biologists and applied mathematicians * Provides a unified and coherent account of methods developed to study spatial ecology via reaction-diffusion modelsCited by: Spatial diffusion. In this concise, clear introduction, the authors describe the theory of spatial diffusion, its method of measurement and many of its applications.
The seminal work of Torsten. In this concise, clear introduction, the authors describe the theory of spatial diffusion, its method of measurement and many of its applications.
The seminal work of Torsten Hagerstrand, who introduced the original spatial model of diffusion, is outlined. Spatial Diffusion: An Historical Geography of Epidemics in an Island Community. An exploration of the geography by which measles has repeatedly passed through a series of communities in Iceland.
"Innovation Diffusion as Spatial Process (): Törsten Hägerstrand." In Key Texts in Human Geography, edited by Phil HubbardRob Kitchin and Gill Valentine, London: SAGE Publications Ltd, doi: /n1.
SIMULATION RESULTS 0 0 0 0 0 Size Mean Medn Stdev %. Spatial Analysis of Lung Cancer Mortality in the American West to Improve If the OLS diagnostics indicate the presence of a diffusion process, the researcher will wish to estimate a spatial lag model via maximum likelihood (ML) estimation or an instrumental variables specification incorporating instruments for the spatially lagged dependent Cited by: 1.
Spatial diffusion is the process by which an idea or innovation is transmitted between individuals and groups across space. It enables dispersion of concepts or things from a central point of origin to other locations that may or may not be directly connected. Additional Physical Format: Online version: Gould, Peter, Spatial diffusion.
[Washington, Association of American Geographers, ] (OCoLC) Many ecological phenomena may be modelled using apparently random processes involving space (and possibly time). Such phenomena are classified as spatial in their nature and include all aspects of pollution.
This book addresses the problem of modelling spatial effects in ecology and population dynamics using reaction-diffusion models. Theory of spatial diffusion in the location of the region's productive forces In geographical works, the concept of diffusion has two different meanings.
Expansion diffusion is the process by which information, tangible objects, and so on. spread from one area to another. The spatial diffusion of new knowledge and the migration of scholars and highly skilled professionals are key issues in geography of knowledge.
However, the spatial dissemination of knowledge is much more complex and more place-dependent than the simple sender–receiver model of. Drawing on census data, we use an innovative spatial analytic approach to examine the spread or diffusion of diversity across counties in the 48 contiguous states.
Three perspectives—locational persistence, spatial assimilation, and institutional hub—offer different expectations about the nature of the diffusion by: 4. Part of the Lecture Notes in Biomathematics book series (LNBM, volume 91) Abstract The calculation of the translational diffusion coefficient D T of proteins and other ligands in the intercellular fluid forms the subject of a vast literature; some of the classical papers are those by Chandrasekhar  and Einstein .
Barriers to diffusion may be physical or cultural, such as differences in languages or levels of technology. Since spatial diffusion takes place on many different scales, chapter three focuses on the various models of individual or micro-level diffusion, urban diffusion, regional diffusion, and macro-level (or national and international) diffusion.
Spatial Diffusion and Spatial Statistics: Revisting Hägerstrand's Study of Innovation Diffusion Article (PDF Available) December with 1, Reads How we measure 'reads'Author: Roger Bivand.
Haggett is the author of Geography ( avg rating, 0 ratings, 0 reviews), Spatial Diffusion ( avg rating, 2 ratings, 0 reviews, published ), /5(2). The spatial diffusion of Islam outward from Mecca was significant and predictable. There are two main types of spatial diffusion: expansion diffusion A phenomenon that starts at one point and propagates outward from person to person; includes both contagious diffusion and hierarchical diffusion.
and relocation diffusion A phenomenon that starts. In geography, the term diffusion refers to the spread of people, things, ideas, cultural practices, disease, technology, weather, and other factors from place to place.
This kind of proliferation is known as spatial diffusion. The three main types of this phenomenon are expansion diffusion, stimulus diffusion, and relocation : Matt Rosenberg.A recent review paper  emphasized the significance of integrating spatial memory into the modeling of animal movements, and the memory-based diffusion is extremely complicated and poorly.spatial diffusion is the way in which people, things,and technology are distributed over the space in the earth's surfaces.
examples people can migrates from his/her home original to another areas.