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   371384篇
  免费   14263篇
  国内免费   2028篇
财政金融   53482篇
工业经济   23530篇
计划管理   72919篇
经济学   81271篇
综合类   30034篇
运输经济   4672篇
旅游经济   5932篇
贸易经济   58869篇
农业经济   22766篇
经济概况   33697篇
信息产业经济   72篇
邮电经济   431篇
  2023年   3290篇
  2022年   6396篇
  2021年   10857篇
  2020年   9471篇
  2019年   8665篇
  2018年   8648篇
  2017年   11067篇
  2016年   9354篇
  2015年   9813篇
  2014年   14745篇
  2013年   31875篇
  2012年   26118篇
  2011年   27733篇
  2010年   25981篇
  2009年   24243篇
  2008年   23087篇
  2007年   21799篇
  2006年   20217篇
  2005年   16650篇
  2004年   8973篇
  2003年   7524篇
  2002年   6345篇
  2001年   5817篇
  2000年   4708篇
  1999年   3885篇
  1998年   3249篇
  1997年   2924篇
  1996年   2649篇
  1995年   2178篇
  1994年   2041篇
  1993年   2010篇
  1992年   1893篇
  1991年   1706篇
  1990年   1537篇
  1989年   1330篇
  1988年   1235篇
  1987年   1232篇
  1986年   1205篇
  1985年   1552篇
  1984年   1505篇
  1983年   1348篇
  1982年   1123篇
  1981年   1147篇
  1980年   1022篇
  1979年   973篇
  1978年   816篇
  1977年   759篇
  1976年   584篇
  1975年   556篇
  1974年   506篇
排序方式: 共有10000条查询结果,搜索用时 500 毫秒
11.
Pham  Van  Woodland  Alan  Caselli  Mauro 《Review of World Economics》2021,157(2):221-269
Review of World Economics - This paper focuses on an unexamined area of trade—the behaviour of heterogeneous intermediate suppliers facing final producers of different ability and pursuing...  相似文献   
12.
依托已有的研究成果构建了家政服务人力资源供给质量评价指标体系,利用AHP-TOPSIS模型对京津冀家政服务人力资源供给质量进行了评价和排名,并使用障碍度模型分析了员工制、准员工制、培训学校、中介制四种类型家政机构人力资源供给质量的关键制约因素,在此基础上,给出了不同类型家政机构人力资源供给质量改善的针对性建议,为家政服务人力资源供给质量的改善提供参考依据。  相似文献   
13.
随着产业链与供应链的深入与完善,以品牌认同为引领的价值创造再一次引起关注,基于"生产商-经销商-终端商"三位一体的价值共创思维是重塑品牌形象强化品牌认同的关键.研究认为:经销商层面中人口基数、人均可支配收入、配送能力等是实现价值增值的因素,生产商层面中市场费用支持、分销政策支持、品牌战略提升是促进价值提升的关键,终端商层面中客情维护、货龄管理、品牌维护是保障价值实现的途径.  相似文献   
14.
Control groups can provide counterfactual evidence for assessing the impact of an event or policy change on a target variable. We argue that fitting a multivariate time series model offers potential gains over a direct comparison between the target and a weighted average of controls. More importantly, it highlights the assumptions underlying methods such as difference in differences and synthetic control, suggesting ways to test these assumptions. Gains from simple and transparent time series models are analysed using examples from the literature, including the California smoking law of 1989 and German reunification. We argue that selecting controls using a time series strategy is preferable to existing data‐driven regression methods.  相似文献   
15.
基于我国减税降费背景下消费税理应秉持的职能定位,本文对征收含糖饮料消费税可能产生的影响展开定量分析.结果表明:征收含糖饮料消费税能够为政府的消费税收入带来至少2%的增幅,同时可以降低居民的能量摄入和体重;尽管存在微弱的收入分配负效应,相对于含糖饮料过量摄入引起的健康负外部性导致的经济损失,征税带来的收益比较可观.本文建议将含糖饮料消费税作为引导居民健康饮食消费的一个切入点,通过逐步扩大税目的方式最终形成契合我国国情的不健康食品消费税.  相似文献   
16.
Portuguese Economic Journal - A set of RLS-type models with ARMA and ARFIMA dynamics is estimated and compared in a forecasting exercise with ARFIMA, GARCH and FIGARCH models. It is an extension of...  相似文献   
17.
当前抓紧加强和改进高校意识形态工作具有极端重要性和现实紧迫性.中医药文化之意蕴与高校意识形态教育目标、内容价值相通,更与高校意识形态工作理念、方法内在相契.通过将中医药文化有机融入意识形态工作,进一步加强宣传阵地、实践阵地建设,协同发力,有助于实现高等中医药院校意识形态工作创新发展.  相似文献   
18.
Family firms bear two types of agency costs, including type I and type II agency problems, in corporate environmental practices: (1) Outside executives at family firms hesitate to engage in environmental strategies, which can lead to drops in profits; (2) Controlling families employ opportunistically environmental management to achieve their interests. We argue that a primary cause for the agency problems lies on ineffective internal corporate governance at family firms, which can cause loss of managerial (or power) balance between outside executives and family executives. Our findings show that family firms with ownership and strategic control (FSC), which family executives and outside executives monitor and constrain each other, can achieve the highest environmental performance. Moreover, external controls, including product market competition and provincial environmental regulations, substitute effective internal control of FSC. The environmental performance premium of FSC is more prevalent when the production market competition is lower. Family firms with ownership, operational, and strategic control (FOSC) can achieve higher environmental performance within a province with more stringent environmental regulations.  相似文献   
19.
梁虎  张珩 《当代财经》2021,(2):63-74
国务院"43号文"的实施,为研究地方债务的治理效果提供了一个准自然实验场景.研究发现:地方债务治理对银行金融资产没有产生影响,但会显著增加银行总贷款、个人贷款和企业贷款,有助于银行信贷资金的"脱虚向实";地方债务治理能显著增加银行实体行业贷款,但不能显著增加银行非实体行业贷款和建筑业贷款.机制检验发现,地方债务治理可以通过降低借款人和借款企业的融资成本,间接性地影响银行信贷资金配置.进一步研究发现,国务院"43号文"实施后,资产质量高的银行倾向于增加企业贷款和实体行业贷款,资产质量低的银行倾向于增加个人贷款;银行规模可以强化地方债务治理对银行贷款增长的促进作用.因此,为促进银行信贷资金的"脱虚向实",应提高地方债务治理水平,强化对银行业务的监管与引导,加强风险管理,保障银行资产质量.  相似文献   
20.
Aims: Depression is the most frequent comorbidity reported among patients with rheumatoid arthritis (RA). Comorbid depression negatively impacts RA patients’ health-related quality-of-life, physical function, mental function, mortality, and experience of pain and symptom severity. The objective of this study was to assess healthcare utilization, expenditures, and work productivity among patients with RA with or without depression.

Materials and methods: Data from adult patients who had at least two visits each related to RA and depression over a 1-year period were extracted from the Truven Health MarketScan research databases. Outcomes comprised healthcare resource utilization, work productivity loss, and direct healthcare costs comparing patients with RA with depression (n?=?3,478) vs patients with RA without depression (n?=?43,222).

Results: Patients with RA and depression had a significantly greater relative risk of hospitalization and number of all-cause and RA-related hospitalizations, utilization of emergency services, days spent in the hospital, physician visits, and RA-related surgeries compared with RA patients without depression. Patients with RA and depression had a higher risk of and experienced more events and days of short-term disability compared with patients without depression. The incremental adjusted annual all-cause and RA-related direct costs were $8,488 (95% CI = $6,793–$10,223) and $578 (95% CI = –$98–$1,243), respectively, when comparing patients with RA and depression vs RA only.

Limitations: The current analysis is subject to the known limitations of retrospective studies based on administrative claims data.

Conclusions: This study suggested increased healthcare utilization, work productivity loss, and economic burden among RA patients due to comorbid depression. These findings emphasize the importance of managing depression and including depression as a factor when devising treatment algorithms for patients with RA.  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