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   35715篇
  免费   957篇
  国内免费   684篇
财政金融   2324篇
工业经济   2388篇
计划管理   13107篇
经济学   3770篇
综合类   4226篇
运输经济   437篇
旅游经济   814篇
贸易经济   4399篇
农业经济   2885篇
经济概况   3005篇
信息产业经济   1篇
  2024年   60篇
  2023年   323篇
  2022年   407篇
  2021年   885篇
  2020年   900篇
  2019年   581篇
  2018年   547篇
  2017年   671篇
  2016年   700篇
  2015年   965篇
  2014年   2778篇
  2013年   3315篇
  2012年   3059篇
  2011年   3852篇
  2010年   2903篇
  2009年   2198篇
  2008年   2506篇
  2007年   2254篇
  2006年   2244篇
  2005年   1771篇
  2004年   1279篇
  2003年   950篇
  2002年   613篇
  2001年   518篇
  2000年   387篇
  1999年   200篇
  1998年   126篇
  1997年   89篇
  1996年   67篇
  1995年   39篇
  1994年   36篇
  1993年   28篇
  1992年   14篇
  1991年   15篇
  1990年   6篇
  1989年   6篇
  1988年   8篇
  1987年   6篇
  1986年   3篇
  1985年   13篇
  1984年   13篇
  1983年   7篇
  1982年   5篇
  1981年   2篇
  1980年   6篇
  1978年   1篇
排序方式: 共有10000条查询结果,搜索用时 515 毫秒
931.
Are common theories of outsourcing useful in predicting the extent of and performance gains from the outsourcing of procurement activities? Or does procurement׳s broad scope and boundary-spanning role confound successful analysis? This study applies a theoretical framework combining concepts from transaction-cost economics (TCE) and the resource-based view (RBV) to study the procurement outsourcing decisions of two hundred and eighty US-based electronics manufacturing firms. Findings suggest that TCE and RBV act in complementary ways on the procurement outsourcing decision. TCE, through fear of supplier opportunism, appears to be the primary driver of the extent to which procurement activities are outsourced. The RBV, through which the OEM׳s resource position in procurement vis-à-vis its outsourcing partner is determined, appears to be the primary determinant of the performance results of the outsourcing decision. Procurement activities are outsourced to a greater extent when fear of supplier opportunism is low, but such outsourcing is only “justified” (expected to yield performance benefits) when the OEM has a weak resource position vis-à-vis the outsourcing partner. An “enriched” TCE–RBV framework is presented and discussed as part of study results.  相似文献   
932.
新型城镇化实现的前提是“三农”问题的有效解决,而解决“三农”问题的关键在于农产品企业的发展壮大.本文从农产品生产和经营特点入手,剖析农产品企业在生产经营中遇到的各种问题,从实际案例出发,探讨信用保险在农产品企业经营中发挥的作用以及存在的问题,并提出相应的解决思路.  相似文献   
933.
934.
近年来,中央银行沟通成为一种新型的货币政策工具。基于中央银行沟通视角,分析西方国家在预期管理中的渠道、手段及效果,结论表明中央银行沟通有助于预期管理。借鉴西方国家沟通经验,提出中央银行的有效沟通,需要中央银行独立性及问责制作保障;重视沟通的规律性,强调沟通信息的清晰和准确;注重对宏观经济运行认识水平,提高公众的经济学素养。  相似文献   
935.
This paper investigates how vertical integration may influence inventory turnover and firm operating performance. A causal model is developed to investigate the effects of vertical integration on three types of inventory, namely raw materials inventory (RMI), work in progress inventory (WIPI) and finished goods inventory (FGI). The model tests the interactions between inventory types and the consequences of inventory turnover performance on various aspects of firm performance including costs and profitability. In particular, path analysis supports systematic differences with respect to how vertical integration affects RMI, WIPI and FGI. Vertical integration has a positive effect on RMI and FGI turnover but no significant effect on WIPI turnover. FGI contributes to a reduction in supporting processes costs which causes an improvement in return on sales (ROSs). Vertical integration impacts ROS directly.  相似文献   
936.
Trade is an integral part of the Canadian economy. The main institutional drivers governing trade are bilateral and multilateral agreements outlining permissible trade distorting measures. Since its inception in 1972, Canada's supply management system has remained protected throughout trade negotiations. The system appears, by any economic measure, to be having an increasingly disproportional influence in recent trade negotiations. However, trade agreements serve not only to maximize social surplus, but also to maximize some measure of political welfare. Canada has recently negotiated three prominent trade agreements: the Canada-European Union Comprehensive Economic and Trade Agreement (CETA) came into effect in the latter part of 2017; the Comprehensive and Progressive Agreement for Trans-Pacific Partnership (CPTPP) came into effect at the end of 2018; and the Canada-United States-Mexico Agreement (CUSMA) could come into effect in 2020. Collectively, these agreements have guaranteed increased market access for fresh and processed dairy products. We build a spatial partial equilibrium model of the Canadian dairy industry consisting of three regions and 10 commodities to assess the individual and cumulative effect of these trade agreements. We pay particular attention to the institutional drivers within today's dairy sector: milk protein isolates; component pricing, including Class 7; and differential demand growth. We find that the aggregate impacts are: (a) a 1.4% decrease in the marginal retail price; (b) a 4.8% decrease in the blended producer price; and (c) an overall increase in social welfare of 7.8%. Worth noting, the decrease in producer surplus varies from 0.7% in the western region to 1.5% in Ontario. Our results may be relevant to future negotiations as well as the publicly promised compensation package for dairy producers.  相似文献   
937.
The increasing magnitude and frequency of landslide-related disasters exposes weaknesses in disaster risk reduction (DRR) policy. One of the underlying reasons is that DRR policies tend to focus only on the physical aspects of the problem (i.e. mass movement processes) while neglecting the level of vulnerability of exposed populations to landslide threats, which affects the types and magnitude of adverse consequences. This neglect is a typical symptom of the remoteness that can exist between public administrators and local communities and undermines the implementation of participatory risk management. Certain dimensions of vulnerability depend on how communities relate to the issue of disasters based on their intuitive or rational judgment, i.e. their perception of risk. This paper seeks to shed light on the need for an understanding of risk perception based on the findings from a survey of residents in the city of Angra dos Reis, Rio de Janeiro, Brazil, to be taken into account in aiming at a more efficient landslide risk management policy. The survey was carried out through semi-structured face-to-face interviews with residents of three typical hillside communities in this municipality. In general, the study found that residents will often weigh landslide risks against other threats and opportunities existing where they live. It also found that community members find it difficult to see themselves as agents of change in the environment where they live and in mitigating landslide risks, and that better communication is needed between the government agencies involved in risk management and local residents.  相似文献   
938.
2017年5月26日,中国外汇交易中心人民币兑美元中间价报价机制中引入逆周期因子。本文利用引入新因子以来外汇市场交易数据,通过新的人民币汇率中间价定价机制,测算了逆周期因子数值。在此基础上,本文通过构建VAR模型和EGARCH模型研究了逆周期因子对人民币汇率走势和人民币汇率波动性的影响。研究表明,引入逆周期因子降低了人民币汇率波动性,但对人民币汇率的走势没有显著影响。逆周期因子修正了投资者对汇率变动顺周期性的过度反应,有利于引导市场预期,完善人民币汇率宏观审慎管理。  相似文献   
939.
通过实地调查研究,借鉴已发布的国际、国家、地区、经营单位层面森林可持续经营标准和指标,以森林可持续经营为主要内容,对亚热带地区国有林场森林经营、人力资源、社会资源等方面进行研究,构建出亚热带地区国有林场可持续经营指标体系,为亚热带地区国有林场可持续经营提供理论借鉴,期盼为制定亚热带地区森林可持续经营指标提供借鉴。  相似文献   
940.
Reed Olsen 《Applied economics》2016,48(60):5931-5940
This study utilizes state-level data from 2001 to 2009 to estimate the impact of the 2007 financial crisis upon health care expenditures. Higher death rates are consistently found to have a positive and statistically significant impact on health expenditures. While mental health and COPD are not generally found to impact expenditures, increases in the percentage of the population diagnosed with cholesterol and obesity tend to increase health expenditures. Increases in health expenditures slowed considerably after the financial crisis. Even though recessions (high unemployment rates) are generally found to have a positive impact on health expenditures, the post-financial crisis time period is estimated to have much lower health expenditures than in other time periods. Our results can be used to give insight into the conditions under which the slower rate of increase in health expenditures can be expected to increase. More research will be needed to be able to more completely explore not only the reasons for these changes in health expenditures but also whether they are likely to continue into the future.  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