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1.
Address delivered at the 37th North American Meetings, Boston, November 1990.  相似文献   

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As society changes, so Regional Science must devise new methods to analyze these changes, for technical change affects not merely society but also the social sciences. This claim is illustrated by an analysis and a test of Simon's (1947) model of productivity, economic structure, and spatial distribution of activities.  相似文献   

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Pecuniary externalities in a two-region economy are examined from several aspects. The analysis includes fiscal externality, inefficiency of free migration, and inefficiency of autarky non-wage income sharing. Measures to restore the productive efficiency that is lacking in the multiregion economy with local public goods are discussed. Finally, a new aspect of the interregional allocation of residential activities is analyzed as the economics of multi-habitation.  相似文献   

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Fielding A  Halford S 《环境与规划A辑》1993,25(10):1,421-1,440
"First, a regional analysis of the social mobilities of men and women nonmigrants [in England and Wales] is carried out. Second, the way in which regional context structures the options open to men and women is discussed, and, third, the fortunes of male and female interregional migrants are traced."  相似文献   

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This article gives an overview of the positive and negative aspects of spatial concentration and segregation. We argue that much of the literature is biased; it emphasizes the drawbacks of spatial concentration and segregation of low-income groups in general and immigrants in particular. The opportunities offered by concentration and segregation, which almost always depend on the presence of local solidarity networks, are given less attention. These opportunities are mainly treated in the literature on ethnic entrepreneurs. Much of the literature on the effects of spatial concentration and segregation is based on research in the United States. Thus, we have to be very careful when we apply the results to West European countries. The overview concludes with some suggestions for further research. This paper was first presented at the COST-CIVITAS Conference on Social Fragmentation, Social Cohesion and Urban Governance in Oslo, 5–7 June 1997. Gideon Bolt is a PhD researcher at the Urban Research Centre Utrecht, Faculty of Geographical Sciences, Utrecht University. His work concerns the importance of the neighborhood with regard to the migration patterns of Turks. Jack Burgers is an associate professor of sociology at the Erasmus University of Rotterdam. Ronald van Kempen is an associate professor at the Urban Research Centre Utrecht, Faculty of Geographical Sciences, Utrecht University, the Netherlands.  相似文献   

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A simple hand method is developed for the determination of the fundamental buckling weight, the fundamental vibration period and the corresponding mode shapes of a frequent type of contemporary building structure, the weight axis of which does not coincide with its stiffness axis. Moreover, the plane of the lateral load is determined, which produces a deformation corresponding to the buckling and vibration mode shapes. Typical examples illustrate the practical application of the method.  相似文献   

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The aim of this paper is to examine the effects of crime on regional economic growth in Mexico. We estimate a growth model using a spatial panel data model and test for the presence and type of spatial interaction, as proposed by Elhorst. Our results suggest that a two‐way spatial Durbin model best fits the data, crime exerts a negative total effect on economic growth across Mexican states, particularly homicides and robbery, and significant spillover effects seem to reinforce the negative impact on regional growth.  相似文献   

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The regional distribution of Spanish unemployment: A spatial analysis   总被引:1,自引:0,他引:1  
In this article we propose a set of tools for analysing the regional distribution of unemployment. As we are interested in the characteristics of the distribution as a whole, results from a traditional regression analysis are complemented with those obtained by estimating its external shape before and after being conditioned to factors underlying regional unemployment. In addition, we specifically consider the spatial characteristics of the distribution, and the empirical model we develop to determine explanatory factors includes spatial effects. This framework is applied to the study of the provincial distribution of unemployment rates in Spain. Results point to increasing spatial dependence in the distribution of regional unemployment rates, and a change in the factors causing regional differentials over the last decade.  相似文献   

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The aim of this investigation is to analyze the effect of technological innovation on Mexico’s regional economic growth during 1995–2007. It is argued that the inclusion of the spatial dimension in empirical analysis is still a rare practice in Mexico and even in international studies. Such inclusion allows studying the pattern of spatial interaction, the possible effects of spatial diffusion and the estimation of robust parameters. We apply the spatial data analysis methodology that has three components: (a) exploratory analysis, (b) visualization and (c) spatial econometric modeling. The main result suggests that technological innovation has a positive effect on Mexico’s regional economic growth. The empirical evidence also suggests that there is a positive effect coming from cross-border diffusion effects of technological knowledge. It also implies that states with stronger innovation activity benefited from spatial technological externalities and hence faster economic growth.  相似文献   

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从建筑空间结构设计的特点入手,分析了建筑空间结构设计的优化问题,总结了建筑空间结构设计和优化的措施,以期通过对建筑空间结构进行优化,设计出更加美观、经济、安全、合理的建筑物。  相似文献   

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衡量大跨度空间结构优劣的五个指标   总被引:2,自引:0,他引:2  
王仕统 《空间结构》2003,9(1):60-64
对大跨度结构(l>60m)来说,材料用量多,不仅是一种浪费,对结构的竖向抗震也极为不利.优秀的大跨度结构必须采用空间结构.梁式结构体系(桁架是格构式梁)不宜在大跨度结构中采用.根据我国的技术经济政策,即技术先进、安全适用、经济合理、确保质量,本文提出衡量大跨度空间结构优劣的五个指标,可供建筑和结构设计人员参考.  相似文献   

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Charlotte Lemanski   《Cities》2007,24(6):448-461
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This paper reports on studies into the controllability of the regional income disparities arising from multi-regional economic growth. The necessary condition is that no significant band of regional income disparities should result at the end of the planning period. The regional disparities among nine regions in Japan are explored using the interregional input-output technique and regional production functions. Furthermore, some potentially interesting research probes into the controllability of regional income disparities using the reference adaptive control technique are discussed.  相似文献   

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大跨钢-混凝土空间组合结构的研究与应用   总被引:2,自引:0,他引:2  
近年来,钢-混凝土组合结构在大跨空间结构中得到了越来越多的应用,本文简要介绍了在传统结构基础上发展起来的几种新型大跨空间组合结构,包括单向、双向组合梁板结构以及组合转换结构,并对其研究情况进行了综述.通过四个大跨空间结构的工程实例,论述了组合结构在大跨空间结构中应用的优势.钢-混凝土组合结构由于其结构高度小、自重轻、承载力高、刚度大、施工快速方便、受力性能优越等特点,在大跨空间结构中具有广阔的应用前景.  相似文献   

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