首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   2228篇
  免费   109篇
  2024年   9篇
  2023年   50篇
  2022年   42篇
  2021年   41篇
  2020年   111篇
  2019年   130篇
  2018年   139篇
  2017年   134篇
  2016年   131篇
  2015年   89篇
  2014年   92篇
  2013年   250篇
  2012年   156篇
  2011年   109篇
  2010年   117篇
  2009年   100篇
  2008年   111篇
  2007年   102篇
  2006年   76篇
  2005年   57篇
  2004年   40篇
  2003年   42篇
  2002年   34篇
  2001年   21篇
  2000年   29篇
  1999年   17篇
  1998年   11篇
  1997年   12篇
  1996年   9篇
  1995年   5篇
  1994年   4篇
  1993年   7篇
  1992年   5篇
  1991年   1篇
  1990年   1篇
  1988年   1篇
  1987年   2篇
  1985年   7篇
  1984年   6篇
  1983年   8篇
  1982年   7篇
  1981年   5篇
  1980年   5篇
  1979年   9篇
  1978年   3篇
排序方式: 共有2337条查询结果,搜索用时 15 毫秒
31.
ABSTRACT

Geographers interested in how entrepreneurs perceive locational environments have studied their mental maps in several European countries, within the theoretical framework provided by behavioral approach. Such studies have typically employed quantitative techniques, but qualitative studies are relatively new to this line of research. In this article, I examine the mental maps of entrepreneurs in Italy by using a mixture of qualitative and quantitative methods. I present and discuss the qualitative outcomes of this research, focusing in particular on the explanatory location factors and the key influences on the mental maps of entrepreneurs. What emerges is the realization that entrepreneurs are far from being fully rational economic actors, who exploit optimally all information and who are driven only by objective considerations. Rather, their views are also affected by subjective factors, individual’s own insights, commonplaces, stereotypes, and prejudices, particularly with reference to the southern regions of Italy (Mezzogiorno), and of other peripheral areas.  相似文献   
32.
This contribution searches for a regional planning conception that allows for a mutual recognition and practical translation between strategies for urban regions and peripheries beyond separate urban and rural categories; taking the Austrian strategic spatial planning context as the example. For this, various notions of polycentricity are discussed and assessed with regard to periphery. The Austrian strategic spatial development concept ÖREK sets out a focused work programme with changing responsibilities and participation of actors. The objectives are targeted and the processes are implementation oriented. Amongst other topics, urban regional issues and peripheral, declining regions are worked on separately. A conceptually integrative, plan-like strategic instrument across the topics and for the whole of Austria is lacking. The ESPON notion of ‘inner peripheries’ is proposed as a complementary concept to the ESDP notion of polycentricity, helping to create a bridge between urban regional and periphery strategies. This has the potential to guide strategic planning practice efforts in Austria towards a yet missing strategic spatial plan for the whole of the country beyond urban and rural categories. Practice relevant conclusions related to the case of Austrian strategic spatial planning are drawn and a need for further, comparative research in a European context is identified.  相似文献   
33.
This paper aims at a greater comprehension of the distribution of differentiated knowledge bases and their association with innovation performance. Drawing on evolutionary economic geography, we applied a combinatorial and dynamic view on knowledge bases. The main contribution is the examination of changes and transformations of knowledge bases over time in particular group of regions in Europe and links with innovation performance. Our study revealed systematic regularities between regions with different innovation performance and their knowledge bases. With decreasing regional innovation performance the volatility of knowledge bases over time increases. Innovation leaders evinced stability over time and the most balanced composition of knowledge bases (compared with Central and Eastern Europe regions). Western European countries and regions exhibit the most balanced structure of knowledge bases. An important complementarity and synergy has been identified in the close relatedness of the symbolic knowledge base to the analytical knowledge base. The highest intensity of SME cooperation takes place in regions with a strong analytical base and in regions with the most balanced mix among all three bases (particularly in the UK, the Netherlands and Belgium. Underperforming in innovation show a balanced mix of synthetic and symbolic knowledge bases.  相似文献   
34.
Whilst the advantages of the application of Land Readjustment (LR) are well known, there are nevertheless numerous countries in which application of LR is difficult or has not been successful. In its analysis of land readjustment constraints, conditions and the international practice, this paper contributes to improving the implementation of an LR system, particularly with respect to the management process. At the international level, management models in seven countries were studied: Australia, France, Germany, Japan, South Korea, Spain and Sweden. In Portugal, three case studies in the municipalities of Almada, Coimbra and Lisbon were selected, with semi-structured interviews being conducted with the respective managing entities. The management models are distinguished by the type of initiative and leadership processes, relations among stakeholders, managing entities and operating rules. It can be concluded that the role of the public authority as the process facilitator from the very initial stages, the existence of a managing entity and a board of specialists, and the legal conditions governing expropriation are key factors for the improvement of land readjustment management.  相似文献   
35.
This themed section brings together five articles focusing on distinct urban sites: Berlin/Munich, Oslo/Bergen, Belfast, Bologna and Barcelona. While there has been extensive research on Polish migrants in cities such as London, this themed issue presents a unique opportunity to explore the experiences of Polish women and men across a range of different cities. In so doing, these articles address key questions concerning implications of the specific structures and opportunities of localities where Polish migrants settle for their gendered everyday life experiences. In providing a short introduction to the themed sections, we begin by introducing some of these questions and consider the ways in which the section can contribute to on-going debates about how migrants experience and navigate place in gendered ways. We argue that gender relations and dynamics are significant to processes of migrant adaptation within particular cities. The ways in which migrants navigate their new locations are shaped not only by institutional structures but also by gendered, classed and racialised power dynamics enacted in and through those spaces. By examining the experiences of Polish migrants across various city spaces in different national contexts, we consider how migrants may adopt particular strategies to negotiate these specific ‘spaces of encounter’.  相似文献   
36.
37.
ABSTRACT

A remote archipelago, Hawai'i, offers a plethora of sought after coastal and marine tourism experiences. The same unique marine fauna that draws tourists also makes Hawai'i a major player in the international ornamental aquarium trade. For many residents of Hawai'i, the marine realm is part of their island home and interactions with tourists and tourism activities are a part of everyday life. For many residents, the ocean is an important resource and for some a staple source of livelihood, be it through tourism, fisheries, or the aquarium trade. This variance between extractive and non-extractive marine resource use creates conflicts between stakeholder groups in Hawai'i. This study thematically analyzes public testimony records, which included 1652 individual testimonies, from proposed legislation aimed to establish ‘an aquatic life conservation program in the Division of Aquatic Resources to implement conservation measures, including limited entry areas and certification requirements, to regulate the collection of fish and other aquatic life for aquarium purposes. Public opinions evident in individual testimonies are representative of the disagreement in the literature regarding the stability and health of reef fishes populations in Hawai'i and broader resource-user conflicts. This study aims to better describe the user conflict between stakeholder groups in the marine resources of Hawai'i by exposing themes concerning change in natural environments.  相似文献   
38.
Alongside the institutionally constructed European identity, research shows that insights into citizens’ sense of belonging are valuable as well in assessing questions of identity. The tendency to conflate European identity with EU identity has spurred debates about the components that underlie European identification. The online subsidiarity adopted by the EU through e-platforms has allowed for a new form of citizenship where e-citizens (de)legitimate the issues under debate. This article examines the contents of European and national identities in the e-debaters’ comments posted on the Debating Europe platform. Drawing on narrative and discursive approaches, we propose a framework to operationalize the (de)legitimation and identification categories used by e-debaters within their discursive construction of European identity. The qualitative empirical research shows three main (de)legitimation clusters: the “EU as a loss,” “inclusive gain,” and “exclusive gain.” We discuss these findings within the broader context of Europeanization, identity multiplicity, and the conditions of the EU enlargement policy.  相似文献   
39.
This article examines how role theory can enhance the middle-power literature in understanding the role preferences of middle powers. Rather than treating it as merely a function of material capability or good international citizenship, this article resituates middle power as a concept of international status that states aim to pursue through the enactment of role conceptions. Thus, it reinstates a conceptual distinction between ‘middle-power status’ and ‘middle-power roles’. The article suggests that the notion of role conceptions can analytically connect the status-seeking behaviour of middle powers with their foreign policy agenda. In so doing, it provides a more nuanced explanation of middle-power behaviour, which might differ between one middle power and another. Using Indonesia and South Korea as case studies of middle power, this article contends that foreign policymakers have strategically conceptualised and enacted several main roles that aim to capture historical experience, as well as ego and alter expectations, in order to pursue middle-power status. These role conceptions determine the foreign policy agenda of states in articulating their middle-power status.  相似文献   
40.
This article introduces the dossier ‘Spatializing Transnational History: European spaces and territories’. It examines the intersections between transnational history and the so-called ‘spatial turn’ in social sciences, and points at future directions in historical research. It reviews two main different methodological approaches to the problem of space in transnational, comparative and global history and examines recent contributions on the history of territory. Finally, it introduces the contributions to this dossier, which approach the history of modern Europe from a number of transnational and spatial perspectives. The dossier argues that incorporating a combination of spatial approaches, ranging from the examination of transnational spaces, to the interplay between different scales of analysis, and to the historicization of territoriality, into the practice of transnational, comparative and global history may contribute to a deeper, wider and more complex understanding of ‘Europe’.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号