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   14752篇
  免费   552篇
  国内免费   292篇
财政金融   1191篇
工业经济   741篇
计划管理   3211篇
经济学   2664篇
综合类   2745篇
运输经济   186篇
旅游经济   161篇
贸易经济   1964篇
农业经济   1095篇
经济概况   1621篇
信息产业经济   4篇
邮电经济   13篇
  2024年   17篇
  2023年   86篇
  2022年   308篇
  2021年   557篇
  2020年   342篇
  2019年   197篇
  2018年   158篇
  2017年   275篇
  2016年   233篇
  2015年   519篇
  2014年   785篇
  2013年   903篇
  2012年   1180篇
  2011年   1436篇
  2010年   1368篇
  2009年   1214篇
  2008年   1144篇
  2007年   1221篇
  2006年   1199篇
  2005年   1001篇
  2004年   415篇
  2003年   302篇
  2002年   236篇
  2001年   251篇
  2000年   147篇
  1999年   44篇
  1998年   11篇
  1997年   11篇
  1996年   8篇
  1995年   3篇
  1994年   2篇
  1993年   5篇
  1992年   4篇
  1991年   2篇
  1989年   4篇
  1988年   1篇
  1984年   7篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
在学生党支部建设的过程中,通过建立"学习型"体系框架、推进"服务型"一体化建设、完善"创新型"机制等措施,逐步形成"三型"协作、优势互补的新格局。高校学生党支部以"三型"体系建设为着力点,引领学生党员在"学习"中筑牢思想根基,在"服务"中巩固群众基础,在"创新"中提升能力水平,全面有效提升高校学生党支部的组织力。  相似文献   
2.
Previous research has shown that virtuous leader behavior in the form of benevolent leadership has considerable impact on employee creativity. However, little is known as to how and under what conditions these constructs are linked. In the current research, we proposed and tested a moderated mediation model positing leader–member exchange (LMX) as a mediator, and employee power-distance orientation as a moderator of this relationship. Two studies were conducted to test our hypothesized model. In Study 1, repeated measured data collected from 284 Chinese employees in an information technology company demonstrated that benevolent leadership had a lagged effect on LMX. In Study 2, analyses of multisource and lagged data from 391 Chinese employees in 42 research and development teams, and their direct supervisors indicated that benevolent leadership was positively related to supervisor-rated employee creativity via LMX. In addition, the relationship between benevolent leadership and LMX was stronger for employees high in power-distance orientation. Theoretical implications of benevolent leadership’s research and practical contributions concerning promoting creativity in organizations where benevolent leaders prevail are also discussed.  相似文献   
3.
Objective: In Japan, the National Immunization Program (NIP) includes PPV23 as the primary vaccination for adults and catch-up cohorts. The Japanese Association for Infectious Diseases recommends revaccination for older adults who received primary vaccination ≥5 years earlier. The cost-effectiveness of adding revaccination and/or continuing catch-up vaccination in the NIP was evaluated from the public payer perspective in Japan.

Methods: The Markov model included five health states: no pneumococcal disease, invasive pneumococcal diseases (IPD), non-bacteremic pneumococcal pneumonia (NBPP), post-meningitis sequelae, and death. Cohorts of adults aged 65–95 were followed until age 100 or death: 2014 cohort (aged 65–95, vaccinated: 2014); 2019 cohort (aged 65: 2019); and 2019 catch-up cohort (aged 70–100: 2019, unvaccinated: 2014). Strategies included: (1) vaccinate 2014 and 2019 cohorts; (2) vaccinate 2014 and 2019 cohorts and revaccinate both; (3) strategy 1 and vaccinate 2019 catch-up cohort; (4) strategy 2 and vaccinate 2019 catch-up cohort; and (5) strategy 4 and revaccinate 2019 catch-up cohort. Parameters were retrieved from global and Japanese sources, costs and QALYs discounted at 2%, and incremental cost-effectiveness ratios (ICERs) estimated.

Results: Strategy 1 had the highest number of IPD and NBPP cases, and strategy 5 the lowest. Strategies 3–5 dominated strategy 1 and strategy 2 was cost-effective compared to strategy 1 (ICER: ¥1,622,153 per QALY gained). At a willingness-to-pay threshold of ¥5 million per QALY gained, strategy 2 was cost-effective and strategies 3–5 were cost-saving compared to strategy 1.

Conclusions: Strategies including revaccination, catch-up, or both were cost-effective or cost-saving in comparison to no revaccination and no catch-up. Results can inform future vaccine policies and programs in Japan.  相似文献   
4.
We study investor communication and stock comovement using a novel data set from an active online stock forum in China. We find substantial comovement among the returns of a stock and its “related stocks,” which are frequently discussed in the subforum dedicated to the given stock. Comovement is greater when the discussion of related stocks is more intensive. Further, the effect of communication on comovement is stronger for stocks associated with higher information uncertainty. Codiscussed stocks are more actively traded and experience more correlated trading. A trading strategy that exploits communication‐driven comovement generates abnormal returns. Our findings highlight the impact of investor communication on asset comovement.  相似文献   
5.
Most studies on the predictability of moving average (MA) technical analysis use the discrete (buy/sell) trading recommendations. However, it is possibly incomplete or unreliable to explore the predictability of MA by only employing its generated trading signals. To further explore the forecastability of MA, we study its measurable impact on the stock market returns by using a conventional predictive regression framework. Our empirical study on the US stock market with respect to more detailed price information finds, (i) that the proposed predictor, MADP (MA based on daily prices) shows significant predictability in‐ and out‐of‐sample, and significantly outperforms the historical average (HA) benchmark as well as the MA based on monthly prices, (ii) that the predictability of MADP centers on the short‐term lags (within the most recent 10 days) and disappears when lags are beyond 20 days, and (iii) that the economic evaluation of the portfolios based on trading strategies confirms the superior performance of MADP with short‐term lags against the benchmark even though considering transaction costs.  相似文献   
6.
沈永建  徐巍  蒋德权 《金融研究》2018,457(7):49-68
本文将视角聚焦于利率市场化改革之前,重点研究金融抑制对银企信贷契约的异化。研究发现,在金融抑制背景下银企之间存在以留存贷款为表现的隐性契约,用以帮助银行在满足管制要求的同时追求利润最大化。本文对这一现象进行了理论分析与实证检验,发现隐性契约的发生与否会随着货币政策、企业特征等因素的改变而有所差异,这在一定程度上起到了利率变相市场化的作用。进一步研究则发现,这一隐性契约对企业价值产生了负向影响。  相似文献   
7.
"开放式住区"意味着住区街道、公共空间等面向城市开放,与封闭式住区相比,其内部公共产品的空间属性产生了变化,这也引起居民在物权方面的担忧。从空间权益的角度解读开放式住区的实践途径具有现实意义。"大院"和"小区"是最典型的中国居住区模式,分析认为,它们是政府对城市基层单位的空间发展权让渡,形成了空间权益的内化现象。开放式住区则意味着地方政府对基层空间主导权的回收。在实践途径上,比较了财产权模式与中国模式的区别,提出加强政府对城市空间发展权的主张;并分别针对"新建住区"和"改造住区"讨论了实践中的主要问题和可行方法。  相似文献   
8.
课程教学质量是高等学校的生命线,学分制模式下,工商管理类专业课程因其本身固有的特性,课程教学质量的提升在较大程度上依托于一个完善的质量监控体系的有效运作,为此高校要采取措施,在内部构建起课程教学质量的监控体系来确保人才培养质量,从而提高办学水平。  相似文献   
9.
自由主义是西方资本主义的代名词,但在德国,有着追求大民族理想的历史传统,自由主义在与浪漫主义的冲突和民族主义的强大势力的威慑下缓慢发展,结果走向了法西斯主义。反思历史可以警惕极端民族主义思潮;同时在全球化的背景下也应避免走向削弱民族意识乃至丧失民族意识的极端思潮。  相似文献   
10.
目前理论界对金融监管存在着几个需要澄清的理论误区.中国金融监管存在着体制缺陷和信息黑洞,制约着监管效率的提高.因此,中国金融监管效率的提高,关键在于改革中国金融监管体制,在于形成金融监管当局提供有效监管的激励及其相应的制度安排.  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