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   635篇
  免费   19篇
财政金融   102篇
工业经济   50篇
计划管理   113篇
经济学   158篇
运输经济   6篇
旅游经济   9篇
贸易经济   101篇
农业经济   47篇
经济概况   68篇
  2023年   5篇
  2020年   4篇
  2018年   7篇
  2017年   16篇
  2016年   14篇
  2015年   10篇
  2014年   13篇
  2013年   78篇
  2012年   21篇
  2011年   22篇
  2010年   16篇
  2009年   25篇
  2008年   21篇
  2007年   20篇
  2006年   17篇
  2005年   9篇
  2004年   19篇
  2003年   18篇
  2002年   15篇
  2001年   15篇
  2000年   34篇
  1999年   15篇
  1998年   17篇
  1997年   11篇
  1996年   14篇
  1995年   13篇
  1994年   6篇
  1993年   6篇
  1992年   9篇
  1991年   9篇
  1990年   8篇
  1989年   10篇
  1988年   6篇
  1986年   6篇
  1985年   11篇
  1984年   9篇
  1983年   9篇
  1982年   5篇
  1981年   3篇
  1980年   7篇
  1979年   4篇
  1978年   4篇
  1977年   9篇
  1976年   11篇
  1975年   4篇
  1974年   4篇
  1973年   5篇
  1972年   4篇
  1946年   4篇
  1945年   4篇
排序方式: 共有654条查询结果,搜索用时 15 毫秒
101.
Performance feedback has significant potential to benefit employees in terms of individual and team performance. Moreover, effective performance feedback has the potential to enhance employee engagement, motivation, and job satisfaction. However, managers often are not comfortable giving performance feedback and such feedback, if improperly relayed, causes more harm than good. In this installment of HUMAN PERFORMANCE, we describe a shift from traditional weaknesses-based feedback (which relies on negative commentary focused on employees’ shortcomings) to the more constructive approach of strengths-based feedback (which relies on employee affirmation and encouragement). We explain why a strengths-based approach to performance feedback is superior to the weaknesses-centered approach, and offer nine research-based recommendations on how to deliver effective performance feedback employing a strengths-based method.  相似文献   
102.
EBCT measured coronary calcium is fast becoming a standard screening tool in asymptomatic patients with and without risk factors who apply for life insurance. Since atherosclerotic plaques become calcified as part of their natural history, the calcium score is an excellent measure of total atherosclerotic burden. Over the past 5 years, various clinical studies have confirmed the predictive value of the coronary calcium score for both soft (revascularization, MI) and hard (MI and sudden cardiac death) events incrementally and independently of traditional coronary risk factors identified by the Framingham Heart Study. Accurate assessment of cardiac mortality risk in asymptomatic applicants for life insurance should include both traditional risk factor assessments in combination with age and gender specific percentiles for coronary calcium. New data from both new and ongoing clinical trials will seek to further support the predictive value of coronary calcium scores as an independent and incremental predictor of hard cardiac events.  相似文献   
103.
This paper uses a unique policy change in Ontario, Canada, to provide direct evidence on how reducing the length of high school would impact student performance in university. After a five‐year educational program was eliminated from Ontario high schools and replaced with a four‐year program, two graduating cohorts with different amounts of high school education simultaneously entered university. The results demonstrate that students who receive one less year of high school education perform significantly worse than their counterparts in all subjects, even after the age difference between the cohorts is accounted for.  相似文献   
104.
Estimating the Dynamics of Mutual Fund Alphas and Betas   总被引:1,自引:0,他引:1  
This article develops a Kalman filter model to track dynamicmutual fund factor loadings. It then uses the estimates to analyzewhether managers with market-timing ability can be identifiedex ante. The primary findings are as follows: (i) Ordinary leastsquares (OLS) timing models produce false positives (nonzeroalphas) at too high a rate with either daily or monthly data.In contrast, the Kalman filter model produces them at approximatelythe correct rate with monthly data; (ii) In monthly data, thoughthe OLS models fail to detect any timing among fund managers,the Kalman filter does; (iii) The alpha and beta forecasts fromthe Kalman model are more accurate than those from the OLS timingmodels; (iv) The Kalman filter model tracks most fund alphasand betas better than OLS models that employ macroeconomic variablesin addition to fund returns.  相似文献   
105.
Rapid change is affecting the demography, technology and availability of resources (both financial and volunteer) on which charities draw. This paper presents four different scenarios that could describe the charity sector one generation from now as it responds to a different world. We highlight the dangers if any one scenario becomes dominant. While it is inevitable that change will occur, these drawbacks should be minimized and it is important that public funders and policy makers steer intelligently through this changing world. Also, charity leaders must prepare and plan for inevitable change in the sector.  相似文献   
106.
107.
This paper demonstrates how meta‐analysis can be combined with structural equation modeling (MASEM) to address new questions in strategic management research. We review this integration, describe its implementation, and compare findings from bivariate meta‐analyses, a direct‐effect structural equations model, and two mediating frameworks using data on the strategic leadership and performance relationship. Results drawn from 208 articles that collectively included data on 495,638 observations demonstrate the new insights available from MASEM while also suggesting a revision to conventional thinking on strategic leadership. Whereas some theories posit that boards of directors influence firm performance through monitoring and disciplining the top management team, MASEM provides more support for the view that boards mediate the top management teams' decisions. Implications for applying MASEM in strategic management are offered. Copyright © 2014 John Wiley & Sons, Ltd.  相似文献   
108.
The research reported here addressed two objectives. The first objective was to measure the overall impact of the Cattlemen’s Beef Board as well as eight-specific advertising, promotion and research activities on US beef demand. The second objective was to compute marginal benefit–cost ratios (BCRs) for the eight individual checkoff activities and for the overall programme. The results indicated that Cattlemen’s Beef Board’s Promotion activities increased total domestic beef demand by 15.7 billion pounds in total, or 2.1 billion pounds per year between 2006 and 2014. Collectively, the overall marginal BCR for all Cattlemen’s Beef Board activities was $11.20.  相似文献   
109.
This paper studies the behaviour of Dutch banks. We test the adjustment of banks' balance sheets in times of monetary policy changes during the period 1957–1991. As a reaction to a policy change, banks basically have two alternatives to adjust their net money creation: (1) sell securities in public capital markets, and/or issue long-term liabilities, and (2) change domestic loan supply. If banks opt for the latter a lending channel may be relevant, even in a small open economy with a fixed exchange rate and a high degree of international capital mobility. We test for the effectiveness of both indirect and direct instruments of monetary policy. It turns out that in case of changes in the official interest rate, the volume of bank loans is not affected and that banks display a kind of buffer-stock behaviour by diminishing their publicly traded assets. In situations with quantity restrictions on the growth of net money creation, however, the volume of loans is affected significantly when the quantity restriction is withdrawn thereby fulfilling a necessary condition for the bank lending channel to be effective.  相似文献   
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