Examinando por Autor "Duque, J.C."
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Ítem A stepwise procedure to determinate a suitable scale for the spatial delimitation of urban slums(Springer Nature, 2012-01-01) Duque, J.C.; Royuela, V.; Noreña, M.The globalisation era in which we live has made the world an interconnected space with several global trends. We find developing countries with very high growth rates, what helps to find world economic convergence. As a complement to this trend, within those countries there is a dramatic growth pattern of cities into megacities, as economic activity concentrates in space to exploit agglomeration economies. According to UN-Habitat, in the next two decades the global population living in urban areas will move from 50 % to 70 %. © Springer-Verlag Berlin Heidelberg 2012.Ítem Identificação de clusters industriais na Colômbia baseados na teoria de grafos(Elsevier, 2009-01-01) Duque, J.C.; Rey, S.J.; Gómez, D.A.; Universidad EAFIT. Departamento de Economía y Finanzas; Research in Spatial Economics (RISE)This paper presents a new way to identify and understand the industry clusters in the Colombian economy. The analysis relies on a recent methodology proposed by Duque and Rey (2008) where intricate input-output linkages between industries are simplified using network analysis. In addition to other techniques for cluster identification available in the literature, this novel methodology allows us not only to classify each industry in a given cluster, but also to understand how industries are related to each other within their clusters. This methodology offers a conciliatory approach to two radically different views about the economic unit from which policy makers should design their strategies for resource allocation: Porter's cluster strategy versus Hausmann's industrial targeting.Ítem Identifying industry clusters in Colombia based on graph theory(Elsevier, 2009-01-01) Duque, J.C.; Rey, S.J.; Gómez, D.A.; Universidad EAFIT. Departamento de Economía y Finanzas; Research in Spatial Economics (RISE)This paper presents a new way to identify and understand the industry clusters in the Colombian economy. The analysis relies on a recent methodology proposed by Duque and Rey (2008) where intricate input-output linkages between industries are simplified using network analysis. In addition to other techniques for cluster identification available in the literature, this novel methodology allows us not only to classify each industry in a given cluster, but also to understand how industries are related to each other within their clusters. This methodology offers a conciliatory approach to two radically different views about the economic unit from which policy makers should design their strategies for resource allocation: Porter's cluster strategy versus Hausmann's industrial targeting.Ítem The max-p-regions problem(WILEY-BLACKWELL PUBLISHING INC, 2012-01-01) Duque, J.C.; Anselin, L.; Rey, S.J.; Universidad EAFIT. Departamento de Economía y Finanzas; Research in Spatial Economics (RISE)In this paper, we introduce a new spatially constrained clustering problem called the max-p-regions problem. It involves the clustering of a set of geographic areas into the maximum number of homogeneous regions such that the value of a spatially extensive regional attribute is above a predefined threshold value. We formulate the max-p-regions problem as a mixed integer programming (MIP) problem, and propose a heuristic solution. © 2011, Wiley Periodicals, Inc..Ítem The Network-Max-P-Regions model(TAYLOR & FRANCIS LTD, 2017-05-04) She, B.; Duque, J.C.; Ye, X.; Universidad EAFIT. Departamento de Economía y Finanzas; Research in Spatial Economics (RISE)This paper introduces a new p-regions model called the Network-Max-P-Regions (NMPR) model. The NMPR is a regionalization model that aims to aggregate n areas into the maximum number of regions (max-p) that satisfy a threshold constraint and to minimize the heterogeneity while taking into account the influence of a street network. The exact formulation of the NMPR is presented, and a heuristic solution is proposed to effectively compute the near-optimized partitions in several simulation datasets and a case study in Wuhan, China. © 2016 Informa UK Limited, trading as Taylor & Francis Group.Ítem Propuesta metodológica para la desagregación espacio-temporal de los indicadores de demografía empresarial(Asociacion Espanola de Ciencia Regional, 2012-01-01) Duque, J.C.; García, J.R.; Suriñach, J.; Universidad EAFIT. Departamento de Economía y Finanzas; Research in Spatial Economics (RISE)This article presents a methodology to calculate, for the whole of the Autonomous Communities in Spain, firm demography indicators at the sector level, disaggregating in terms of both business size and the legal status of companies. We provide empirical evidence using quarterly accounts of Social Security for Catalonia. As firm demography indicators are usually obtained annually, we propose new formulations that allow their calculation on quarterly bases, using information from the Social Security records, so that the results are consistent with the official information. © Investigaciones Regionales.Ítem Shocks and Spatial Regime Fades in Spain's International Migration Distribution(Blackwell Publishing Ltd, 2016-12-01) Duque, J.C.; Hierro, M.; Universidad EAFIT. Departamento de Economía y Finanzas; Research in Spatial Economics (RISE)Using an exploratory space-time analysis called spMorph, this article explores how the spatial distribution of international migration across the Spanish provinces has evolved over the period 1998-2010. The chief advantage of this approach is that it permits the unambiguous identification of two key components in a spatial redistribution process, namely the shocks to the spatial distribution and the duration of regime fades. The results of the analysis show that administrative regions do not provide a reliable picture of the real dynamics in Spain's international migration distribution. In addition, the identification of two spatial shocks reveals the existence of three spatial regimes that consistently characterize the various phases that international migration has been through since the late 1990s.Ítem SpMorph: An exploratory space-time analysis tool for describing processes of spatial redistribution(Blackwell Publishing Ltd, 2015-08-01) Duque, J.C.; Ye, X.; Folch, D.C.; Universidad EAFIT. Departamento de Economía y Finanzas; Research in Spatial Economics (RISE)This paper introduces an exploratory space-time analysis tool for determining the two components of a spatial redistribution process: (i) the shock, which is the moment that triggers a spatial redistribution process; for example, a new policy, a war, an earthquake, etc.; and (ii) the duration of the regime fade, which is the time between the shock and the moment in which a new regime emerges as a better representation of the spatial distribution of the attribute. Two examples are provided: the first uses China's provincial per capitaGDP between 1978 and 2008, and the second uses state level housing price and unemployment rate data for the US between 2002 and 2012. Resumen: Este artículo presenta una herramienta preliminar de análisis espacio-temporal para determinar los dos componentes de un proceso de redistribución espacial: (i) la perturbación, que es el momento que desencadena un proceso de redistribución espacial; por ejemplo, una nueva política, una guerra, un terremoto, etc.; y (ii) la duración del desvanecimiento del régimen, que es el tiempo entre la perturbación y el momento en que emerge un nuevo régimen, como una mejor representación de la distribución espacial del atributo. Se ofrecen dos ejemplos: el primero utiliza el PIB per cápita provincial de China entre 1978 y 2008, y el segundo utiliza precios de la vivienda a nivel estatal y datos de la tasa de desempleo de los EE.UU. entre 2002 y 2012. © 2015 The Author(s). Papers in Regional Science © 2015 RSAI.