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   378篇
  免费   24篇
财政金融   47篇
工业经济   14篇
计划管理   81篇
经济学   84篇
运输经济   8篇
旅游经济   24篇
贸易经济   112篇
农业经济   14篇
经济概况   16篇
邮电经济   2篇
  2023年   4篇
  2021年   9篇
  2020年   14篇
  2019年   18篇
  2018年   21篇
  2017年   29篇
  2016年   20篇
  2015年   19篇
  2014年   18篇
  2013年   56篇
  2012年   17篇
  2011年   25篇
  2010年   14篇
  2009年   15篇
  2008年   12篇
  2007年   7篇
  2006年   9篇
  2005年   4篇
  2004年   2篇
  2003年   6篇
  2002年   4篇
  2001年   5篇
  2000年   4篇
  1999年   2篇
  1998年   4篇
  1997年   3篇
  1996年   4篇
  1995年   3篇
  1991年   2篇
  1989年   1篇
  1988年   1篇
  1987年   1篇
  1986年   1篇
  1985年   2篇
  1984年   2篇
  1983年   1篇
  1982年   2篇
  1981年   2篇
  1980年   4篇
  1979年   2篇
  1978年   2篇
  1976年   7篇
  1975年   2篇
  1974年   3篇
  1973年   4篇
  1972年   3篇
  1971年   2篇
  1970年   4篇
  1969年   1篇
  1965年   1篇
排序方式: 共有402条查询结果,搜索用时 14 毫秒
101.
The concept of sustainability is one of the forefront issues in discussions of the challenges facing global agriculture, given the mounting pressure to increase food production in both socially responsible and environmentally friendly ways. From the perspective of Irish agriculture, sustainable intensification is of particular relevance, given ambitious targets to increase milk production in the context of European Union (EU) milk quota removal in 2015. A series of farm-level sustainability indicators are developed here using the Teagasc National Farm Survey FADN (Farm Accountancy Data Network) data for Ireland from 2012. Three dimensions, reflecting the multifaceted nature of sustainability (environmental, economic and social) are considered. Given the environmental challenges inherent in the sustainable intensification of agriculture, it is encouraging to observe that the more intensive, top performing farms (in an economic sense) emit relatively less greenhouse gases when compared to their less intensive counterparts. Conversely, the better performing farms in economic terms tend to have a higher nitrogen surplus per hectare on average. This is consistent with their higher rates of production intensity, but poses a challenge in terms of sustainable intensification and expansion. That said this analysis demonstrates that the nitrogen use efficiency of milk production is positively correlated with economic performance, with more intensive farms producing relatively more milk per kilogram of nitrogen surplus. From the perspective of social sustainability, demographic traits also tend to be positively correlated with economic performance. Given a growing recognition of the need for interconnected policy in the area of sustainability, this research should help inform policy debates and provides a guide for the undertaking of similar assessments elsewhere.  相似文献   
102.
We investigate the efficacy of a multisectoral road safety campaign initiated at Luang Namtha Provincial Hospital (LNPH), North-Laos. Road safety days (RSD) with helmet promotion were organised prior to the Lao and International New Year 2007. Motorbike helmet protectiveness was demonstrated by dropping peeled versus unpeeled coconuts from 6-m high sticks simulating city speed-limit (40?km/h). The primary outcome was the number of road traffic injuries (RTI) needing admission (severe RTI) before and after the first RSD. Secondary outcomes were helmet usage, total RTI, hospital staff's behavioural changes and law enforcement. Neighbouring Bokeo Provincial Hospital (BPH) had no intervention. Severe RTI dropped by 34.7% within 12 months (from 449 to 293, p?≤?0.0001, BPH +123% [from 88 to 196]). Total RTI increased by 10.8% (from 772 to 855, p?=?0.0396, BPH +260.8% [from 186 to 671]). Police started the law enforcement right after the RSD. Helmet use increased from 11.2 to 42.5% (p?相似文献   
103.
The aim of this article is to analyse the internal mechanisms of corporate governance (board of directors and ownership structure), which influence voluntary disclosure of intangibles. The results appear to corroborate the view that an increase in institutional investor shareholding has a negative effect on voluntary disclosure, supporting the hypothesis of entrenchment, whereas an excessive ownership by institutional investors may have adverse effects on strategic disclosure decisions. The results also indicate that an increase in the number of members of the board to up to 15 has a beneficial effect on the disclosure of intangibles. However, as this number increases, the effect inverts and becomes adverse to improving the capacity for supervision and control in the decision-making process regarding the voluntary disclosure of intangibles. The findings endorse the recommendation of the most of the Corporate Governance Codes regarding an advisable maximum of 15 members on a board to ensure its effectiveness and internal cohesion.  相似文献   
104.
We consider an atomless economy in which the continuum of agents is represented by a real interval. By dividing the interval and associating to every agent in each subinterval the same initial endowments and preferences, we define sequences of discrete economies as approximations to the initial continuum economy. We obtain convergence results for the core (or, alternatively, for the set of Walrasian allocations) of the continuum economy in terms of the cores of the approximating discrete economies. Finally, we state some counterexamples which provide a boundary for more general results in this framework. Received: 29 December 2000 / Accepted: 28 April 2002 C. Hervés and E. Moreno acknowledge support by Research Grant BEC2000-1388-C04-01 from the Dirección General de Investigación Científica y Técnica (DGICYT), Spanish Ministry of Education.?E. Moreno acknowledges support from the Spanish Ministry of Education through a post-doctoral fellowship in 1997 and from a Training and Mobility of Researchers (E.C.) fellowship in 1998 while visiting Universidade Nova de Lisboa.  相似文献   
105.
Abstract

Hostile environments pose a distinct threat to international organizations and their staff and yet they are under researched within the literature on IHRM. Localization of staff may present a means to manage some of the risks and also to provide the resources needed to achieve competitive advantage. Drawing on the resource-based view and institutional theory, we explored resource- and capability-based and institutional influences in relation to the decision of whether to localize professional staff in a hostile environment (Afghanistan). Using in-depth semi-structured interviews with representatives from four organizations in Afghanistan, our investigation identified new influences on localization at the societal and organizational level. These include ongoing security issues as well as influences on localization such as corruption, impartiality and the need for outside experiences as well as perspectives not identified in previous work. In addition, we emphasize the importance of both picking appropriate valuable local human resources and using appropriate internal capabilities to develop and deploy them in such a way to build firm-specific assets which are also rare, inimitable and non-substitutable, thus leading to sustainable competitive advantage.  相似文献   
106.
Spatial Price Adjustment with and without Trade*   总被引:1,自引:0,他引:1  
We investigate the possibility that price transmission between spatially distinct markets might vary during periods with and without physical trade flows. We test for differences between trade and non‐trade regimes by using generalized reduced rank regression (GRRR) techniques suggested by Hansen (2003) . We apply these techniques to semi‐weekly price and trade flow data for tomato markets in Zimbabwe and find that intermarket price adjustment occurs in both trade and non‐trade periods. Indeed, the adjustments are generally larger and more rapid in periods without physical trade flows. This finding underscores the importance of information flow for market performance.  相似文献   
107.
108.
This article examines how analysts respond to specific ownership structure characteristics by studying the accuracy of their forecasts after the release of the first Spanish corporate governance code and before IFRS were adopted. Specifically, we analyse the influence of ownership concentration, bank ownership and insider ownership on analyst forecast errors. Overall the results show a positive and significant influence of bank ownership on analyst forecast accuracy, which suggests that bank ownership leads to closer monitoring of management and a reduction in analyst forecast errors. However, the presence of large shareholders and insiders in the ownership structure of the firm does not significantly affect the accuracy of financial analysts. This research provides investors with a more refined sense of how analyst forecasts might be affected through the composition of the ownership structure in a context of high concentration of ownership, relevant presence of banks in firms as creditors and shareholders, and local GAAP.  相似文献   
109.
110.
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