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Frank P. van den Heuvel Peter W. de Langen Karel H. van Donselaar Jan C. Fransoo 《European Planning Studies》2014,22(1):204-226
This article presents a method to identify “Absolute and Relative Employment Concentration (AREC) areas” for a particular industry. Two novel characteristics of the method are that it simultaneously analyses AREC, and that it combines spatial concentration per area with the spatial concentration in neighbouring areas. The method is easy to understand and apply. It is developed to assist regional policy makers and corporate decision-makers with their investment decisions related to new infrastructure or plants. The identification of concentration areas also allows for analysing the performance of these areas in relation to characteristics such as infrastructure availability and the housing and labour market. This can yield new academic insights that are relevant for regional planners. An application of the newly developed method to five industries in a Dutch province subdivided into 502 areas illustrates the value of the method in comparison to other methods. 相似文献
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Alan S. Kahan 《History and theory》2006,45(3):424-435
Tocqueville Unveiled : The Historian and His Sources for The Old Regime and the Revolution . By Robert T. Gannett Jr. 相似文献
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Peter A. Rogerson Eric Delmelle Rajan Batta Mohan Akella Alan Blatt Glenn Wilson 《Geographical analysis》2004,36(2):177-194
It is often desirable to sample in those locations where uncertainty associated with a variable is highest. However, the importance of knowing the variable's value may vary across space. We are interested in the spatial distribution of Received Signal Strength Indicator (RSSI), a measure of the signal strength from a cell tower received at a particular location. It is crucial to estimate RSSI values accurately in order to evaluate the effectiveness of mayday systems designed for rapid emergency notification following vehicle crashes. RSSI estimation is less important for locations where the probability of a crash is low and where the likelihood of call completion is either close to zero or one. We develop a method for augmenting an initial spatial sample of RSSI values to achieve a high‐precision estimate of the probability of call completion following a crash. We illustrate the approach using data on RSSI and vehicle crashes in Erie County, NY. 相似文献
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Alan Mcpherson 《外交史》2004,28(1):83-112
In January 1964, riots broke out along the so-called border between Panamanian cities and the U.S.-run Canal Zone, resulting in loss of life among Panamanians and U.S. citizens and serious economic and political damage on both sides. While historians have mainly focused on the causes of the riots and the U.S.-Panama diplomacy that followed, a close look at the lesser-known international investigations of the violence adds texture and detail to the riots themselves as it also uncovers broader cultural and political dynamics surrounding the episode. This essay, informed partly by interviews with Panamanian participants and by documents from the Panamanian government, argues that Panamanians expressed a potent anticolonial discourse during the investigations, one that allowed them to conceal their government's substantial irresponsibility during the riots and help convince the U.S. government to negotiate the devolution of the canal into Panamanian hands. 相似文献
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Differing interpretations regarding the organization of past intensive farming are often distinguished as “top-down” or “bottom-up” perspectives. The development of intensive farming and its social organization are attributed to either nascent states and centralized governments or the incremental work of local communities or kin-based groups. We address the social organization of raised field farming in one region of the Lake Titicaca Basin of the Andean altiplano, Bolivia. We evaluate past research in the Katari Valley, including our own, based on recent settlement survey, excavation, and a variety of analyses. Taking a long-term perspective covering 2500 years, we find that relations of production and rural organization changed greatly over time in relation to changing sociopolitical conditions. Local communities played dynamic roles in the development and organization of raised field farming, yet its intensification and ultimate recession were keyed to the consolidation and decline of the Tiwanaku state. We conclude that the top-down/bottom-up dichotomy is overdrawn. Local communities and their productive practices never operated in a political or economic vacuum but both shaped and were transfigured by regional processes of state formation, consolidation, and fragmentation. 相似文献