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   6447篇
  免费   293篇
  国内免费   54篇
财政金融   258篇
工业经济   283篇
计划管理   1789篇
经济学   890篇
综合类   854篇
运输经济   191篇
旅游经济   339篇
贸易经济   573篇
农业经济   1040篇
经济概况   577篇
  2024年   24篇
  2023年   74篇
  2022年   110篇
  2021年   149篇
  2020年   258篇
  2019年   145篇
  2018年   107篇
  2017年   169篇
  2016年   179篇
  2015年   192篇
  2014年   412篇
  2013年   601篇
  2012年   538篇
  2011年   634篇
  2010年   521篇
  2009年   371篇
  2008年   413篇
  2007年   369篇
  2006年   390篇
  2005年   286篇
  2004年   221篇
  2003年   165篇
  2002年   111篇
  2001年   96篇
  2000年   52篇
  1999年   36篇
  1998年   17篇
  1997年   32篇
  1996年   17篇
  1995年   5篇
  1994年   1篇
  1993年   13篇
  1992年   8篇
  1991年   7篇
  1990年   2篇
  1988年   2篇
  1987年   3篇
  1986年   5篇
  1985年   10篇
  1984年   14篇
  1983年   5篇
  1982年   17篇
  1981年   1篇
  1980年   7篇
  1979年   4篇
  1978年   1篇
排序方式: 共有6794条查询结果,搜索用时 354 毫秒
131.
李文杰 《价值工程》2014,(28):292-293
本文通过对近期热播的体育节目《城市之间》与《智勇大冲关》的分析,探讨体育电视节目对大众体育的影响,及其所反映出的新时期内我国大众参与体育活动的新特点。  相似文献   
132.
The amount of customisation to an enterprise resource planning (ERP) system has always been a major concern in the context of the implementation. This article focuses on the phase of maintenance and presents an empirical study about the relationship between the amount of customising and the resulting support effort. We establish a structural equation modelling model that explains support effort using customisation effort, organisational characteristics and scope of implementation. The findings using data from an ERP provider show that there is a statistically significant effect: with an increasing amount of customisation, the quantity of telephone calls to support increases, as well as the duration of each call.  相似文献   
133.
岭南钦州的宁氏兴起于南朝末,活跃于隋唐,与高州冯氏、冼氏并称,是岭南地区的少数民族首领,在隋唐文献中被称为越人。许多学者仅仅根据清代民国出土的两方隋唐宁氏家族墓志,就得出宁氏为“汉族移民后裔”的观点。而将有关宁氏家族的文献记载与出土墓志进行对照分析,可以发现岭南宁氏的真实身份为当地土著,宁氏将自身族属建构为“汉族移民后裔”,实际上反映了王朝制度在岭南民族地区的渗透与岭南边疆的内地化进程。  相似文献   
134.
Shortfalls in global food production, coupled with the growing visibility of climate change's disruptive effects, have underlined for many observers the importance of devoting rural lands to their ‘optimal’ use, where they can make maximal contributions to the global imperatives of feeding the human population and maintaining vital environmental services. In this context observers have endorsed rural land use planning as a way to insure that, at least in theory, lands get devoted to their best uses. In practice, land use planning in the developing world has resembled ‘organized anarchy’. Small landholders with insecure land tenure, overseas investors seeking large land deals, NGOs representing indigenous peoples, government officials, and staff from international environmental NGOs and multilateral organizations have come together in strategic action fields to struggle over and sometimes negotiate land use plans for contested landscapes. These plans represent a strategic, spatially explicit response to the climate change–biodiversity–food security crisis.  相似文献   
135.
The conservation and management of protected areas in urban settings has become increasingly challenging with dynamics over land use change in adjacent urban areas being highly relevant to, but at times conflicting with, the protected area. This study seeks to better understand the implications of land use change processes to urban protected area management through the case study of the Las Piñas – Parañaque Critical Habitat and Ecotourism Area (LPPCHEA) in Metro Manila, Philippines. Factors and processes influencing land use change and protected area management and the impact of stakeholders’ perceptions on protected area were analyzed. The urban protected area in itself has limited influence on its surrounding urban areas, as land use change in these areas is shaped more by social, economic and policy/institutional factors occurring within the context of urban-regional development. The study also found that land use conflict is evident in an urban protected area due to the competing ecosystem services derived by various stakeholders. This discord is deepened by the lack of coordination between land use planning and protected area management. Integrating protected area management with land use planning through legally binding instruments, specific timeframes and clear internal procedures can help resolve land use conflict for an urban protected area at the strategic or policy level.  相似文献   
136.
We quantify the impact of jointly optimizing strategic network design and tactical inventory planning on the cost and CO2 emissions of multi-echelon logistics networks. The obtained insights indicate that longer optimized replenishment cycles reduce a node’s transportation cost and CO2 emissions but increase its inventory costs. Moreover, under a fixed replenishment cycle, a node’s service level increases when supplied by a satellite warehouse. Finally: (i) the costs of implementing optimal green network design decisions could be misleading if inventory planning is neglected, (ii) greening of supply chains could become expensive, (iii) current legislative CO2 ton prices hardly influence logistics networks.  相似文献   
137.
The concept of managerial discretion provides a theoretical fulcrum for resolving the debate about whether chief executive officers (CEOs) have much influence over company outcomes. In this paper, we operationalize and further develop the construct of managerial discretion at the national level. In an empirical examination of 15 countries, we find that certain informal and formal national institutions—individualism, tolerance of uncertainty, cultural looseness, dispersed firm ownership, a common‐law legal origin, and employer flexibility—are associated with the degree of managerial discretion available to CEOs of public firms in a country. In turn, we show that country‐level managerial discretion is associated with how much impact CEOs have on the performance of their firms. We also find that discretion mediates the relationship between national institutions and CEO effects on firm performance. Finally, we discuss two inductively derived institutional themes: autonomy orientation and risk orientation. Copyright © 2011 John Wiley & Sons, Ltd.  相似文献   
138.
In the standard Keynesian framework, government spending on useless public works has a larger multiplier effect than spending on government transfer payments does. In other words, spending on useless public works increases national income by more than an equivalent increase in government transfer payments would. Nevertheless, their effects on national benefit are identical. For both, the national benefit equals the direct benefit created by the spending. If there are two income classes, some transfers reduce both the national income and the national benefit. Some government purchases completely crowd out private consumption and reduce the national benefit.  相似文献   
139.
3S技术是测量技术发展史的一次重大突破,给测量领域带来了新的生命力,并已推广应用在国家基础建设的各个方面。本文以京沪高铁天津段这样的国家重点建设工程项目为例,介绍了3S技术在该项目从土地规划到建设运营方面的应用。  相似文献   
140.
Scenario planning in the public sector has significant differences from scenario planning in the corporate world. Scenario planning in the government not only tends to be focused on issues of higher complexity and significance to public policy, but also in comparison to people in the private business, public officials have fundamental psychological and institutional constraints in their scenario thinking. These constraints make it difficult for them to contemplate multiple ‘untidy’ futures and imagine the possibility of policy failure: skills which are essential for successful scenario projects. Based on specific characteristics of scenario planning in the Japanese government, this paper contributes on better understanding the challenges and strategic solutions in providing more successful scenario planning in the public sector. Specifically, this paper argues that possible solutions in overcoming these constraints may be to shake public bureaucrats out of their thinking by providing free and open venues of conversation and more importantly through ‘derailment’ exercises.  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