Search results for: dynamic-spatial-models

A dynamic spatial model of agricultural price transmission

Author : Goundan, Anatole
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Spatial interactions are essential drivers of price transmission mechanisms and may significantly affect any food’s policy outcomes. However, spatial aspects seem to be generally overlooked when analyzing price transmission. This paper attempts to fill this gap by highlighting the usefulness of spatial interaction and models for market integration analysis. A spatial dynamic panel datamodel is presented and applied to Niger’s millet market. Empirical results show that (1) the millet market is partly integrated, (2) locally traded commodities (millet and sorghum) are linked by a cross-commodity price transmission, (3) most imported cereals prices, which for Niger is maize and rice, did not affect the millet market, and (4) no cross-regions price transmissionoccurred for the millet market.

Toward a Dynamic Spatial Model of Zebra Mussel Dreissena Polymorpha Spread Among Inland Waters of Wisconsin

Author : Michael A. Koutnik
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Dynamic spatial models

Author : Ross D. Mackinnon
File Size : 39.22 MB
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Dynamic Spatial Models

Author : Daniel A. Griffith
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Proceedings of the NATO Advanced Study Institute, Bonas, France, July 6-19, 1980

Spatial Simulation

Author : David O'Sullivan
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A ground-up approach to explaining dynamic spatialmodelling for an interdisciplinary audience. Across broad areas of the environmental and social sciences,simulation models are an important way to study systemsinaccessible to scientific experimental and observational methods,and also an essential complement to those more conventionalapproaches. The contemporary research literature is teemingwith abstract simulation models whose presentation ismathematically demanding and requires a high level of knowledge ofquantitative and computational methods and approaches. Furthermore, simulation models designed to represent specificsystems and phenomena are often complicated, and, as a result,difficult to reconstruct from their descriptions in theliterature. This book aims to provide a practical andaccessible account of dynamic spatial modelling, while alsoequipping readers with a sound conceptual foundation in thesubject, and a useful introduction to the wide-rangingliterature. Spatial Simulation: Exploring Pattern and Process isorganised around the idea that a small number of spatial processesunderlie the wide variety of dynamic spatial models. Its centralfocus on three ‘building-blocks’ of dynamic spatialmodels – forces of attraction and segregation, individualmobile entities, and processes of spread – guides the readerto an understanding of the basis of many of the complicated modelsfound in the research literature. The three building block modelsare presented in their simplest form and are progressivelyelaborated and related to real world process that can berepresented using them. Introductory chapters cover essentialbackground topics, particularly the relationships between pattern,process and spatiotemporal scale. Additional chaptersconsider how time and space can be represented in more complicatedmodels, and methods for the analysis and evaluation of models.Finally, the three building block models are woven together in amore elaborate example to show how a complicated model can beassembled from relatively simple components. To aid understanding, more than 50 specific models described inthe book are available online at patternandprocess.org forexploration in the freely available Netlogo platform. Thisbook encourages readers to develop intuition for the abstract typesof model that are likely to be appropriate for application in anyspecific context. Spatial Simulation: Exploring Patternand Process will be of interest to undergraduate and graduatestudents taking courses in environmental, social, ecological andgeographical disciplines. Researchers and professionals whorequire a non-specialist introduction will also find this book aninvaluable guide to dynamic spatial simulation.

Dynamic Spatial Models of Urban and Regional Systems

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A Conceptual Approach to Dynamic Spatial Modeling Using System Dynamics

Author : Steven L. Allenstein
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Dynamic Spatial Models

Author : Daniel A. Griffith
File Size : 77.17 MB
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Modeling Dynamic Economic Systems

Author : Matthias Ruth
File Size : 26.84 MB
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This book explores the dynamic processes in economic systems, concentrating on the extraction and use of the natural resources required to meet economic needs. Sections cover methods for dynamic modeling in economics, microeconomic models of firms, modeling optimal use of both nonrenewable and renewable resources, and chaos in economic models. This book does not require a substantial background in mathematics or computer science.

Spatial Models and GIS

Author : Stewart Fotheringham
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Spatial models have been in existence in the environmental and social sciences for a long time. More recently, specialised software for the capture, manipulation and presentation of spatial data, which can be referred to as `Geographical Information Systems' (GIS), have vastly increased the range of possibilities of organising spatial data by new and efficient ways of spatial integration and spatial interpolation. Coupled with the improvements in data availability and increases in computer memory and speed, these novel techniques give rise to new types of spatial models which exploit the technological potential now available, make better use of existing data, stimulate the collection of new data and open up new ways of working with geographic information. This book explores the potential and impact of GIS on spatial modelling.