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1.
《Urban geography》2013,34(3):258-278
An information theoretic model is used to compare the evolution of the spatial distribution of corporate headquarters in the United States during the period 1957- 1979 with an ideal time-space model. Dispersion of headquarters across the regions of the U.S. has been the dominant trend for most subsectors of the economy since the mid-1960s. Corporate concentration has been a compensatory trend that has left the overall system dispersion of headquarter location at a stable and unchanging level for the country as a whole.  相似文献   

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THE TIMES OF P, S AND SKS, AND THE VELOCITIES OF P AND S   总被引:3,自引:0,他引:3  
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ABSTRACT. Geography, experience, and imagination are all crucial to how we take measure of islands. Prime foci of legend and invention, islands have haunted humanity since the dawn of history. Why are they so intensely loved and loathed, desired and rejected, minutely scrutinized yet often perilously misjudged? On islands we feel alternately landed and adrift, magnified and reduced, fulfilled and voided, at home and in exile. These and other polarities are reviewed here with examples from Caribbean, Atlantic, Mediterranean, antipodean, and imaginary islands fancied by the creator.  相似文献   

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Three samples of twenty drainage basins were analyzed to test the hypothesis that the generic terms “creeks,'’“runs,'’and “hollows'’connote streams of different size and velocity. Analysis of variance and Scheffé's test indicate the validity of a perceptual hierarchy among generics. It is suggested that other hierarchies may exist among geographically named features.  相似文献   

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MAPS,GEOGRAPHY, AND GEOGRAPHERS   总被引:1,自引:1,他引:0  
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ABSTRACT. The search for a perfected place on earth is rarely easy or forgiving. Utopias and dystopias demonstrate the practical frailties of attempts to build better human associations, whether as literary efforts or in actual, on‐the‐ground experiments. With a proprietary interest in evaluating the dimensions of place making, geographers can lay claim to be frontline critics of efforts that attempt to craft a better world. The catalog of personality cultists, charismatically murderous leaders, and apocalyptic mass death is long. The Church Universal and Triumphant, currently of Paradise Valley, Montana, is examined as the home for twenty‐five years of an ongoing effort to “improve” lives. If its dilemmas and apparent failures are in keeping with the history of past utopian ventures, geographical lessons remain to be learned about the costs of planning for perfection.  相似文献   

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湘桂黔滇藏一线覆盖型岩溶地貌特征与岩溶(双层)夷平面   总被引:19,自引:3,他引:16  
根据岩溶风化壳的发育条件及研究覆盖型岩溶特征,提出岩溶(双层)夷平面概念,认为研究区覆盖型岩溶是一个统一的岩溶(双层)夷平面的组成部分。其现阶段的存在形式如石林、岩墙等为后期不同程序风化-刻蚀作用的结果;其地貌形态多为土下成因,并随剥蚀程度、裸露时间环境的差异而叠加各种后期气下改造特征。  相似文献   

10.
In this article I set nationalism and cosmopolitanism into sharp contrast with one another as inherently incompatible geographical imaginations. I begin by briefly denaturalizing nationalism and the nation‐state. I then turn to the philosophy and political agenda of cosmopolitanism, an ideology simultaneously very old and new, which offers a more inclusive and empathetic alternative to nationalist xenophobia. In the third section I argue that contemporary globalization has laid the ontological foundations of a cosmopolitan world order. Next, I explicate nationalism's and cosmopolitanism's competing visions of the definition and meaning of “community.” I summarize major objections to cosmopolitanism and offer a defense of it. In the following section I focus on the implications of cosmopolitanism for contemporary geography, including relational spatialities of empathy and caring. Finally, I suggest that contemporary globalization is gradually putting into place the legal and institutional apparatus for cosmopolitan global governance and democracy.  相似文献   

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ABSTRACT. “Midtown” is an important but understudied component of the morphology and historical evolution of North American and, to a lesser extent, European cities, and landmark buildings have played a notable role in giving midtowns identity and prestige. Especially significant are the recent diffusion and expansion of the twinned “midtown-skyscraper” concept to the major cities of East and Southeast Asia. For a variety of reasons, it is likely that massive midtowns anchored by famous buildings will become most evident on the western fringe of the Pacific Rim. Western architectural, engineering, and planning firms are playing major roles in this diffusion and illustrate nicely the importance of exporting the service component of the global economy. Buildings and midtowns provide (reinforced) concrete examples of the impact of the new global economy on the landscapes of major cities.  相似文献   

16.
ABSTRACT. “Community” is a good warm word frequently invoked by citizens, social workers, and politicians. “Society,” by contrast, is more ambivalent, invoking something elitist and exclusive, as in the expression “high society.” The word “individual,” or “individualism,” often connoting selfishness and bracketed with society, is even more suspect in our time. I plead for a restoration of balance and esteem among the three terms as a necessary step toward acquiring a fuller understanding of the human condition and potential.  相似文献   

17.
磁化率与粒度,矿物的关系及其古环境意义   总被引:80,自引:1,他引:80  
王建  董龄祥 《地理学报》1996,51(2):155-163
根据实测数据,对磁化率与粒度、矿物之间的关系进行了探讨。结果表明,沉积物粒度与磁化率的关系,与物源及沉积动力密切相关。因此,在一定条件下,可利用两者关系来反映物源或沉积动力。碎屑沉积物的磁化率主要取决于磁铁矿的含量,并由此建立了磁化率(S,10^-7m^3kg^-1)与磁铁矿的百分含量(Pm)之间的回归方程S=49.18Pm+49.5。由于磁铁矿为重矿物,在沉积物中常常与钛铁矿、磷钇矿、独居石、锆  相似文献   

18.
The idea of a cognitive or mental map has been a source of confusion in the geographical literature for some time. Downs suggests that the confusion can be removed if we give consideration to the role of maps in metaphors and analogies. This raises important questions, but treating the map as a double metaphor does nothing to clarify these issues. Cartographic skills are not the result of introspection and hypothesizing such maps-in-the-head can only impede our understanding of spatial behavior.  相似文献   

19.

The idea of a cognitive or mental map has been a source of confusion in the geographical literature for some time. Downs suggests that the confusion can be removed if we give consideration to the role of maps in metaphors and analogies. This raises important questions, but treating the map as a double metaphor does nothing to clarify these issues. Cartographic skills are not the result of introspection and hypothesizing such maps-in-the-head can only impede our understanding of spatial behavior.  相似文献   

20.
ABSTRACT. Wilhelm Richard Wagner fused fantasy based on epic and lore with seamless scores, using landscapes and urban images to forge spatial order on stage. As a footloose composer-conductor, Wagner was considered a globetrotter for his time, and from trans-European tours he drew inspiration for numerous stagings. Nine of his operas have rustic pastoral settings, with actors silhouetted against geological formations, forests, vistas of undulating terrain for pilgrimages, or raging seas, all visually believable scenery. Rienzi and Die Meistersinger von Nürnberg are urban in setting, whereas Die Feen and Das Liebesverbot are set in a castle-like format.  相似文献   

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