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   12907篇
  免费   314篇
  国内免费   1篇
财政金融   2195篇
工业经济   922篇
计划管理   2252篇
经济学   2797篇
综合类   235篇
运输经济   64篇
旅游经济   167篇
贸易经济   2575篇
农业经济   447篇
经济概况   1321篇
信息产业经济   1篇
邮电经济   246篇
  2021年   92篇
  2020年   164篇
  2019年   202篇
  2018年   347篇
  2017年   379篇
  2016年   357篇
  2015年   244篇
  2014年   341篇
  2013年   1303篇
  2012年   403篇
  2011年   423篇
  2010年   426篇
  2009年   450篇
  2008年   410篇
  2007年   356篇
  2006年   275篇
  2005年   253篇
  2004年   244篇
  2003年   264篇
  2002年   226篇
  2001年   251篇
  2000年   270篇
  1999年   203篇
  1998年   204篇
  1997年   222篇
  1996年   204篇
  1995年   200篇
  1994年   191篇
  1993年   192篇
  1992年   213篇
  1991年   210篇
  1990年   172篇
  1989年   169篇
  1988年   137篇
  1987年   133篇
  1986年   140篇
  1985年   199篇
  1984年   174篇
  1983年   197篇
  1982年   160篇
  1981年   185篇
  1980年   162篇
  1979年   185篇
  1978年   150篇
  1977年   133篇
  1976年   146篇
  1975年   126篇
  1974年   120篇
  1973年   96篇
  1972年   74篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
In this conceptual article, the authors propose a framework for how progressive human rights outcomes may be obtained in the context of bidding, planning and implementing major sport events (MSEs) through the implementation of four pathways, including good governance, the democratic participation of stakeholders, the formalisation of human rights agendas and the deployment of sensitive urban development. The authors argue that there is a need for adherence to internationally recognised standards, such as the Universal Declaration of Human Rights and the United Nations Guiding Principles on Business and Human Rights if rhetorical statements from MSE awarding bodies and host organisers are to be accountable to a wider set of actors. If researchers and practitioners want to address some of the critical issues related to human rights and MSEs, it is imperative that key actors working in the rights sphere are involved in shaping the research agenda and monitoring its implementation. Academics need to take a proactive approach aimed at achieving both theoretically grounded and practically relevant solutions, with engagement occurring over an extended period of time. This approach, avowedly political and concerned with genuine action, is a key way in which MSE stakeholders can be held to account for their actions in regard to human rights.  相似文献   
992.
Hong Kong's retrocession to Chinese sovereignty in 1997 initiated intense interest in cultural heritage on the part of divergently positioned actors, including activists, the state, and entrepreneurs. Heritage walking tours have proliferated, providing a wide range of examples suitable for comparison. This article develops a typology of heritage trails and tours in order to consider how they are situated in relation to the tourist economy and local context. Theoretically it builds on insights in new walking studies and debates in tourism and heritage studies on the ‘tourist-local divide.’ The article relies on qualitative research conducted in Hong Kong, including participant observation and interviews, and a review of various secondary sources. The typology distinguishes between government-generated, market-oriented, and community-based heritage walks. Three key issues are discussed: the ways that tours and trails develop, how they engage with official and unofficial heritage places, and how they reference urban issues including state-led urban renewal and redevelopment. The article argues that, while walking in general is a format that is suited to both tourist and local visitor engagement, some trails and tours reinforce dominant narratives of heritage and urban space, while others challenge them.  相似文献   
993.
The purpose of this study was to explore the relationship between mandatory food safety training and certification and inspection results of chain restaurants and independent restaurants, using current food safety inspection results of food service establishments in Central Florida. More specifically, this study examines whether there is any statistically significant difference in the violation frequency among chain and independent restaurants. Reducing the risk of any foodborne illness is a critical strategy that industry stakeholders should pursue in an area dominated by tourism such as Orlando, Florida. A one-way ANOVA was used to determine the differences between the two types of restaurants. Findings indicate that there is significant difference between chain and independent restaurants for critical violations. No difference was found when comparing chain verses independent restaurants for non-critical violations.  相似文献   
994.
This paper positions sustainable mass tourism (SMT) as the desired and impending outcome for most destinations. Natural resource scarcity, development of green technology, climate change awareness, the global financial crisis, institutionalised environmentalism and Internet technology all facilitate the emergence of sustainability as a societal norm that is combining with the longer established norm of growth desirability. SMT convergence is occurring along three distinctive paths in an evolutionary manner that reflects environmental pragmatism. The market-driven ‘organic’ path describes the conventional tourism area life cycle model of Butler, whilst the regulation-driven ‘incremental’ path entails deliberate alternative tourism (DAT) in which carrying capacities are gradually increased to accommodate higher visitation levels. The hybrid ‘induced’ path describes planned mega-resorts conceived as growth poles. Each model is invested with its own specific planning and management implications.  相似文献   
995.
996.
Federal lab commercialization is explored: (1) by analyzing US government patents and (2) in a qualitative analysis of one NASA lab's patents. Tests apply to three distinct sets of patents, 1963–94: NASA, all other US government, and a random sample of all US inventors' patents. The federal patenting rate plummeted in the 1970s. Consistent with increasing commercialization, both NASA's and other federal agencies' rates recovered in the 1980s. The case study finds citations to be a valid but noisy measure of technology spillovers. Excluding 'spurious' cites, two-thirds of cites to patents of NASA-Lewis' Electro-Physics Branch were evaluated as involving spillovers.  相似文献   
997.
998.
999.
Competing insurance intermediaries provide heterogeneous services that are difficult for incompletely informed consumers to assess. Transaction cost economics, search theory, and principal‐agent theory provide arguments on product quality differences between exclusive agents and independent intermediaries. This article uses a sample of 927 insurance intermediaries in Germany. By performing OLS estimations, we test the impact of the different distribution channels and other factors on intermediaries’ service quality. Depending on the proxies used for service quality, we find mixed evidence for the product quality hypothesis. Service quality depends to a large extent on the information‐gathering and processing activities of the individual intermediaries, independent of the respective distribution channel.  相似文献   
1000.
ABSTRACT

This paper accounts for the development of the academic endeavour to determine the firm-level relationship between investments in R&D and productivity. The impact of 28 highly cited publications within this line of study is investigated using a combination of bibliometric techniques and citation function analysis. We show how the attention paid to this line of research broadens and deepens in parallel to the diffusion of innovation as a research theme during 2000s. Our findings also suggest that the attraction of scholarly attention is driven by combination of broadening interest in the central research question under study and boundary-pushing methodological contributions made in the key contributions.  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