CiteULike: andyt's library [21 articles]

How to Build an Economic Model in Your Spare Time

2008-08-20T10:02:12-00:00

Building a spatial microsimulation-based planning support system for local policy making

D Ballas — 2008-08-01T14:17:01-00:00

Environment and Planning A (2007)

ACR_MS_Thesis.pdf (application/pdf Object)

2008-05-02T10:56:40-00:00

Carr_CCmaps_Annals_04.pdf (application/pdf Object)

2008-05-02T10:53:21-00:00

Grid Enabling Empirical Economics: A Microdata Application

Simon Peters — 2008-05-02T09:29:12-00:00

Computational Economics, Vol. 30, No. 4. (2 November 2007), pp. 349-370.

Abstract This article discusses the use of Grid technology to integrate the data, computation and presentation elements of an empirical economic modelling process. We achieve this by using a form of statistical data fusion developed in the poverty mapping literature to address a substantive issue: determining United Kingdom ethnic minority welfare. Elements of this methodology appear to be well suited to such grid-enablement, and we present and illustrate our implementation using the context of this microdata application.

Roger Tomlinson - Thinking About GIS: Third Edition | Vector One

2008-02-12T16:29:57-00:00

The Size, Scale, and Shape of Cities

Michael Batty — 2008-02-08T13:16:38-00:00

Science, Vol. 319, No. 5864. (8 February 2008), pp. 769-771.

Despite a century of effort, our understanding of how cities evolve is still woefully inadequate. Recent research, however, suggests that cities are complex systems that mainly grow from the bottom up, their size and shape following well-defined scaling laws that result from intense competition for space. An integrated theory of how cities evolve, linking urban economics and transportation behavior to developments in network science, allometric growth, and fractal geometry, is being slowly developed. This science provides new insights into the resource limits facing cities in terms of the meaning of density, compactness, and sprawl, and related questions of sustainability. It has the potential to enrich current approaches to city planning and replace traditional top-down strategies with realistic city plans that benefit all city dwellers. 10.1126/science.1151419

Global Change and the Ecology of Cities

Nancy Grimm — 2008-02-08T13:09:57-00:00

Science, Vol. 319, No. 5864. (8 February 2008), pp. 756-760.

Urban areas are hot spots that drive environmental change at multiple scales. Material demands of production and human consumption alter land use and cover, biodiversity, and hydrosystems locally to regionally, and urban waste discharge affects local to global biogeochemical cycles and climate. For urbanites, however, global environmental changes are swamped by dramatic changes in the local environment. Urban ecology integrates natural and social sciences to study these radically altered local environments and their regional and global effects. Cities themselves present both the problems and solutions to sustainability challenges of an increasingly urbanized world. 10.1126/science.1150195

The 1918-1919 influenza pandemic in England and Wales: spatial patterns in transmissibility and mortality impact

Gerardo Chowell — 2008-01-10T17:02:36-00:00

Proceedings of the Royal Society B: Biological Sciences (2007)

Spatial variations in disease patterns of the 1918-1919 influenza pandemic remain poorly studied. We explored the association between influenza death rates, transmissibility and several geographical and demographic indicators for the autumn and winter waves of the 1918-1919 pandemic in cities, towns and rural areas of England and Wales. Average measures of transmissibility, estimated by the reproduction number, ranged between 1.3 and 1.9, depending on model assumptions and pandemic wave and showed little spatial variation. Death rates varied markedly with urbanization, with 30-40% higher rates in cities and towns compared with rural areas. In addition, death rates varied with population size across rural settings, where low population areas fared worse. By contrast, we found no association between transmissibility, death rates and indicators of population density and residential crowding. Further studies of the geographical mortality patterns associated with the 1918-1919 influenza pandemic may be useful for pandemic planning.

Designing Service Architectures for Distributed Geoprocessing: Challenges and Future Directions

Friis-Christensen — 2008-01-02T18:37:39-00:00

Transactions in GIS, Vol. 11, No. 6. (December 2007), pp. 799-818.

The two cultures: mashing up web 2.0 and the semantic web

Anupriya Ankolekar — 2007-06-02T19:05:28-00:00

(2007), pp. 825-834.

Enabling an accessible web 2.0

Becky Gibson — 2007-09-14T23:13:29-00:00

(2007), pp. 1-6.

A visualization system for space-time and multivariate patterns (VIS-STAMP).

D Guo — 2007-12-11T17:17:47-00:00

IEEE Trans Vis Comput Graph, Vol. 12, No. 6. (c 2006), pp. 1461-1474.

The research reported here integrates computational, visual, and cartographic methods to develop a geovisual analytic approach for exploring and understanding spatio-temporal and multivariate patterns. The developed methodology and tools can help analysts investigate complex patterns across multivariate, spatial, and temporal dimensions via clustering, sorting, and visualization. Specifically, the approach involves a self-organizing map, a parallel coordinate plot, several forms of reorderable matrices (including several ordering methods), a geographic small multiple display, and a 2-dimensional cartographic color design method. The coupling among these methods leverages their independent strengths and facilitates a visual exploration of patterns that are difficult to discover otherwise. The visualization system we developed supports overview of complex patterns and, through a variety of interactions, enables users to focus on specific patterns and examine detailed views. We demonstrate the system with an application to the IEEE InfoVis 2005 Contest data set, which contains time-varying, geographically referenced, and multivariate data for technology companies in the US.

Ontologies Are Us: A unified model of social networks and semantics

Peter Mika — 2006-12-31T07:27:47-00:00

Vol. 3729 (November 2005), pp. 522-536.

In our work we extend the traditional bipartite model of ontologies with the social dimension, leading to a tripartite model of actors, concepts and instances. We demonstrate the application of this representation by showing how community-based semantics emerges from this model through a process of graph transformation. We illustrate ontology emergence by two case studies, an analysis of a large scale folksonomy system and a novel method for the extraction of community-based ontologies...

Wikipedia and the Semantic Web - The Missing Links

M Krotzsch — 2007-08-05T14:31:10-00:00

(2005)

Wikipedia is the biggest collaboratively created source of encyclopaedic knowledge. Growing beyond the borders of any traditional encyclopaedia, it is facing new problems of knowledge management: The current excessive usage of article lists and categories witnesses the fact that 19th century content organization technologies like inter-article references and indices are no longer su#cient for today's needs.

Simulation, Noir

Andrew Evans — 2007-12-05T12:06:32-00:00

Digital Urban

2007-12-05T11:56:36-00:00

Web 2.0: hypertext by any other name?

David Millard — 2006-11-05T16:34:49-00:00

(2006), pp. 27-30.

Interactive Tag Maps and Tag Clouds for the Multiscale Exploration of Large Spatio-temporal Datasets

Aidan Slingsby — 2007-12-01T22:34:26-00:00

(2007), pp. 497-504.

‘Tag clouds’ and ‘tag maps’ are introduced to represent geographically referenced text. In combination, these aspatial and spatial views are used to explore a large structured spatio-temporal data set by providing overviews and filtering by text and geography. Prototypes are implemented using freely available technologies including Google Earth and Yahoo!’s Tag Map applet. The interactive tag map and tag cloud techniques and the rapid prototyping method used are informally evaluated through successes and limitations encountered. Preliminary evaluation suggests that the techniques may be useful for generating insights when visualizing large data sets containing geo-referenced text strings. The rapid prototyping approach enabled the technique to be developed and evaluated, leading to geovisualization through which a number of ideas were generated. Limitations of this approach are reflected upon. Tag placement, generalisation and prominence at different scales are issues which have come to light in this study that warrant further work.

Effect of spatial resolution on cluster detection: a simulation study

Al Ozonoff — 2007-11-27T22:33:18-00:00

International Journal of Health Geographics, Vol. 6 (27 November 2007), 52.

Developing Automated and Smart Spatial Pattern Exploration Tools for Geographical Information Systems Applications

Stan Openshaw — 2006-05-11T21:09:30-00:00

The paper examines some of the problems that users of geographical information systems (GISs) face in attempting to perform spatial analysis. A case is made for the development of new types of smart exploratory analysis tools able to explore spatial data effectively while also coping with the problems associated with the data and the skill levels of the end-users. Some suggestions are made about how artificial intelligence methods borrowed from artificial life can be used to create spatial pattern hunting creatures that may provide the basis for more effective spatial analysis procedures for the use with GISs.