Results 221 to 230 of about 267,471 (263)

Spatial Heterogeneity in Crime Analysis

CrimRxiv, 2012
Issues related to the modifiable areal unit problem are well-understood within geography. Though these issues are acknowledged in the spatial crime analysis literature, there is little research that assesses their impact. In fact, much of the cited spatial crime analysis literature that investigates the impact of modified areal units suggests that ...
Martin A. Andresen, Nick Malleson
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Quantifying the spatial heterogeneity of points

International Journal of Geographical Information Science, 2019
Variation in the spatial heterogeneity of points reflects the evolutionary process or mechanism of geographical events. The key to depicting this variation is quantifying spatial heterogeneity.
Hua Shu 0001, Tao Pei, Ci Song, Ting Ma 0002, Yunyan Du, Zide Fan, Sihui Guo   +6 more
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Temporal heterogeneity increases with spatial heterogeneity in ecological communities

Ecology, 2018
AbstractHeterogeneity is increasingly recognized as a foundational characteristic of ecological systems. Under global change, understanding temporal community heterogeneity is necessary for predicting the stability of ecosystem functions and services.
Scott L. Collins, Meghan L. Avolio, Corinna Gries, Lauren M. Hallett, Sally E. Koerner, Kimberly J. La Pierre, Andrew L. Rypel, Eric R. Sokol, Samuel B. Fey, Dan F. B. Flynn, Sydney K. Jones, Laura M. Ladwig, Julie Ripplinger, Matt B. Jones   +13 more
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Spatial heterogeneity and the persistence of populations

Oecologia, 1974
The hypothesis that dispersal in a heterogeneous environment can be an important factor in population stability is examined. It is shown that dispersal may increase the persistence time of a population by several orders of magnitude.
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Spatial sorting with heterogeneous firms and heterogeneous sectors

Regional Science and Urban Economics, 2014
The present paper focuses on spatial sorting as a mechanism behind the well-established fact that there is a central region productivity premium. Using a model of heterogeneous firms that can move between regions, Baldwin and Okubo (2006) show how more productive firms sort themselves to the large core region.
Rikard Forslid, Toshihiro Okubo
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Spatial heterogeneity of energy turnover in the heart

Pflügers Archiv, 2001
Local myocardial blood flow varies substantially in spite of a rather homogeneous morphology. To further elucidate this paradox, the spatial heterogeneity of tricarboxylic acid cycle turnover (J(TCA), micromol min(-1) g(-1)) and coronary flow was assessed at a high spatial resolution (6x6x6 mm3) in the open chest dog.
Decking, U. K., Skwirba, S., Zimmermann, M. F., Preckel, B., Thämer, V., Deussen, A., Schrader, J.   +6 more
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Heterogeneity and Spatial Hierarchies

1991
To apply the traditional scientific method, ecologists ordinarily focus on the mean or central tendency of a data set. For example, a typical hypothesis test would involve demonstrating that the mean is significantly different from a control measurement.
Robert V. O’Neill, Robert H. Gardner, Bruce T. Milne, Monica G. Turner, Barbara Jackson   +4 more
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Spatial Price Discrimination with Heterogeneous Products

The Review of Economic Studies, 1988
Summary: Product heterogeneity is introduced into the context of spatial price discrimination. Many of the strong properties of the standard homogeneous goods case (which are attained as a limit case here) are shown to be no longer valid. In particular, the social optimum is no longer sustainable as a market equilibrium unless products are either ...
Anderson, Simon P., de Palma, André
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Spatial Relocation with Heterogeneous Firms and Heterogeneous Sectors [PDF]

, 2010
The present paper focuses on sorting as a mechanism behind the well-established fact that there is a central region productivity premium. Using a model of heterogeneous firms that can move between regions, Baldwin and Okubo (2006) show how more productive firms sort themselves to the large core region.
Forslid, Rikard, Okubo, Toshihiro
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Spatial heterogeneity in molecular brightness

Nature Methods, 2020
Paolo Annibale, Martin J. Lohse
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