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The spatial structuring of “classical” central place systems is the primary concern of this research. Emphasizing the development of such systems from basic spatial relations between centers and hinterland locations (rather than as a result of an underlying geometry of regions), this paper takes an optimization approach to the siting of central places in a single-good system. The objective function is shown to be one that maximizes both market coverage of demand and market overlap. Access to this objective is given through the natural slack covering model.  相似文献   

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A method of “structural chains” is proposed for the analysis of regional urban systems. Each chain is made up of a sequence of numerical elements representing the average population of places at various levels of urban development, from small mining or forestry settlements to large polyfunctional cities of regional or national rank. The absence of a particular category in a region is marked in the chain by a zero. The structural chains of local urban systems can be grouped into tables reflecting the structure of a regional urban system and its local variations. The key characteristics of urban systems reflected by these chains are: the number of elements or levels of development; the number of zeros and their position in the chain, reflecting the degree of development of the urban hierarchy; and the height of the regional tables (number of horizontal rows), representing the number of local urban structures. The method is tested and illustrated by the urban systems of the Dnieper-Donets and Black Sea regions of the Ukraine, the Upper Volga region, and the urban system of the Tatar ASSR.  相似文献   

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Patent Places: Size Matters   总被引:5,自引:0,他引:5  
In this paper I investigate the United States urban system of technical advance by analysis of metropolitan patent data. Residents of metropolitan areas obtain most of the patents awarded to Americans and the largest areas predominate, signifying that urbanization externalities facilitate invention. The advantages of large areas arise from lopsided concentrations of technologically intensive manufacturing and an uneven distribution of well-educated people. Location with respect to the traditional manufacturing belt also plays a role. Metropolitan residents in the manufacturing belt remain the most industrious inventors. The contribution of leading educational and research institutions to technical advance is manifest in small urban centers and outside the traditional manufacturing belt.  相似文献   

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意大利访古     
<正>意大利是个多姿多彩、令人神往的国家。看欧洲地图,意大利的版图形状像一只女人的高筒高跟皮靴伸向地中海。人们对这个国度的兴趣会因各自的偏爱而不同:热衷体育的人欣赏意大利的足球——他们曾三次夺得大力神杯。国家队的21号皮尔洛是钢铁大亨的儿子,他踢球的工资全部捐给非洲难民基金会。这个国家,尤其到了大的赛季,各种色彩都不足以渲染人们的热情。艺术爱好者则推崇意大利的绘画、雕塑和建筑艺术,认为意大利的歌剧名扬四  相似文献   

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Personal construct theory was used to study potential tourists' appraisive images of the major Australian domestic tourist destinations. Seven main evaluative constructs (bipolar discriminations) were identified as being commonly used to appraise destinations. The second stage of the research involved the scoring of places on those seven constructs by potential tourists. Principal components analysis of the resultant matrices showed that construct space generally comprised one main dimension which was labelled favourable - unfavourable. An exception was that older women used two dimensions when appraising destinations. These dimensions were labelled frenetic - relaxing and dull -exciting. Respondents distinguished clearly between destinations and the distinctions made were remarkably consistent over different groups of respondents defined on the basis of age, sex, and location.  相似文献   

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This study provides a socioeconomic profile of the Cuban American population. As a means of reference, Cuban Americans are compared: (1) to the entire Hispanic population and (2) to the total population of the United States. In addition, Cubans living in Miami, Florida are compared to those living in Union City-West New York, New Jersey. Together, these two urban concentrations comprise approximately 75% of the entire Cuban American population. Although the latest wave of 130,000 immigrants from Mariel, Cuba are not included in the data used in this study, generalizations are made regarding their characteristics and probable impact on Miami, based on available preliminary information  相似文献   

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The development of Leningrad's suburban zone began mainly in the Soviet period with the growth of “dormitory” satellites of the central city. Many of the city's satellites perform the same industrial and cultural functions as Leningrad itself. The distribution of commuter areas is analyzed on the basis of winter commutation tickets. In addition to satellites, Leningrad has “associate” cities and towns that supply the central city with electric power and fuels but lack the commuting ties that differentiate true satellites. Further planning of the Leningrad suburban zone should take care not to saturate the suburbs with industry. It is more desirable to locate new plants in small and medium-size cities outside the suburban zone.  相似文献   

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Management of Australia's National Parks and Protected Areas originally developed according to the United State's ‘Yellowstone’ model. Aimed primarily at preserving ‘wilderness’ areas, this form of protected area management has excluded indigenous habitation and land management, effectively colonising these landscapes. Since the 1980s indigenous exclusion from protected area management has been contested in the public sphere. Indigenous peoples have become involved in protected area management in various ways, such as the joint management of national parks. However, greater indigenous control is necessary to truly decolonise protected area landscapes and fully recognise the importance of indigenous Australians in land management. This paper explores a new initiative in protected area management: the Indigenous Protected Area (IPA) program. IPAs are established through voluntary declaration of indigenous land with the aim of enhancing indigenous control of protected area landscapes. Nantawarrina, the first declared IPA, is considered as a case study. Although some manifestations of colonialism are still evident in the Nantawarrina IPA, the program has made some significant contributions to the decolonisation of protected area management in Australia.  相似文献   

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