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   334篇
  免费   1篇
财政金融   68篇
工业经济   28篇
计划管理   55篇
经济学   37篇
综合类   11篇
运输经济   1篇
旅游经济   19篇
贸易经济   83篇
农业经济   14篇
经济概况   19篇
  2023年   4篇
  2021年   2篇
  2020年   9篇
  2019年   10篇
  2018年   2篇
  2017年   9篇
  2016年   7篇
  2015年   6篇
  2014年   9篇
  2013年   48篇
  2012年   12篇
  2011年   5篇
  2010年   12篇
  2009年   14篇
  2008年   10篇
  2007年   13篇
  2006年   17篇
  2005年   5篇
  2004年   6篇
  2003年   9篇
  2002年   9篇
  2001年   5篇
  2000年   5篇
  1999年   7篇
  1998年   8篇
  1997年   4篇
  1996年   6篇
  1995年   7篇
  1994年   5篇
  1993年   6篇
  1992年   5篇
  1991年   7篇
  1990年   3篇
  1989年   4篇
  1988年   4篇
  1987年   2篇
  1986年   4篇
  1985年   11篇
  1984年   6篇
  1983年   4篇
  1982年   3篇
  1981年   3篇
  1980年   1篇
  1978年   3篇
  1973年   1篇
  1970年   1篇
  1967年   1篇
  1963年   1篇
排序方式: 共有335条查询结果,搜索用时 0 毫秒
71.
The Reagan administration has been accused of setting back civil rights enforcement.This article reviews available data on the administration’s enforcement efforts and discusses changes in emphasis, tone, and types of cases pursued.An emphasis on identifiable victims and a movement away from more punitive measures is apparent.Moreover, the large budget cuts and the administration’s antipathy to goals and timetables raise questions concerning the “quality” of enforcement.  相似文献   
72.
    
  相似文献   
73.
This study explores and compares the separate contributions of masculinity, femininity, and androgyny in explaining women's response to modern and traditional sex-role portrayals in print advertisements. It also considers whether sex-role identity captures unique predictive information above and beyond specific demographic variables. This study consisted of a field experiment among 200 adult women; each respondent was exposed to several carefully prepared print ads. The findings suggest that sex-role identity is a useful predictor of women's response to advertisements. Moreover, masculinity is the driving force in explaining women's response to the tested ads. Androgyny, however, adds no incremental predictive ability. The findings indicate that sex-role identity does capture new information, unexplained by specific demographic variables. © 1994 John Wiley & Sons, Inc.  相似文献   
74.
Two methods of measuring consumer values, the List of Values and the Rokeach Value Survey, are compared. Both involve some social desirability responding but both have convergent, discriminant, and empirical validity for consumer research. The List of Values may be preferable for some types of research because it detects more daily influence in people's lives and because it is simpler to administer.  相似文献   
75.
76.
The producer controlled relative mediocrity of schooling in the West makes a stark contrast with the high standards of education in Japan where the consumer is supreme. Professor Richard Lynn, of the University of Ulster, calls for the fillip of competition to improve standards by extending parental choice.  相似文献   
77.
78.
    
Objective:

The study aimed to (1) develop a cost model for colonoscopy preparation among patients referred for colonoscopy using split-dose reduced-volume oral sulfate solution (OSS) and generic polyethylene glycol with electrolytes solution (PEG-ELS), (2) examine cost savings associated with OSS vs PEG-ELS, and (3) assess the robustness of the cost model.

Methods:

Efficacy of each agent was based on the results of a 541-patient clinical trial comparing OSS to PEG-ELS. Cleansing agent and colonoscopy procedure costs were calculated from OptumHealth Reporting & Insights claims data for 2010–Q12013. In the model, patients’ colonoscopies were tracked over a 25 or 35 year time period until the patients reached age 75. The difference per patient per year (PPPY) in total cleansing agent and colonoscopy procedure costs over the time horizon between the OSS and PEG-ELS cohort was calculated. One-way sensitivity analyses were conducted to test the robustness of the cost model.

Results:

The model showed lower cost for OSS patients over the time horizon. Total PPPY costs were $280.34 for the OSS cohort and $296.36 for the PEG-ELS cohort, resulting in a cost saving of $16.01 PPPY for the OSS cohort. This was due primarily to OSS patients having fewer colonoscopies (OSS: 0.158 vs PEG-ELS: 0.170 PPPY). Over the time horizon, cost savings of $4 763 335 were observed among 10, 000 OSS patients. Cost savings switched from OSS to PEG-ELS cohort in four cases: (1) base-case cost of a completed colonoscopy decreased by 75%, (2) base-case cost of OSS increased to over $143 per usage, (3) all non-completers were lost to follow-up, and (4) OSS bowel preparation quality dropped below PEG-ELS to 70%.

Conclusions:

From a payer’s perspective, the model showed that the use of OSS as the cleansing agent resulted in potential cost savings compared with PEG-ELS. Cost savings under OSS remained under various sensitivity analyses.  相似文献   
79.
    
This paper empirically examines market making in the third market for common stocks that are listed on the NYSE. Although the same non-NYSE members make a market on both types of stocks, bid-ask spreads are wider on Rule 19c-3 stocks than on Rule 390 stocks. Market-making by NYSE members is minimal and spreads posted by NYSE members are wider than those posted on identical stocks by non-NYSE members. This suggests that NYSE members do not compete on the basis of spread but use methods such as price matching and the internalization of orders to attract order flow to the third market.  相似文献   
80.
This paper examines whether two qualitative attributes of financial analysts’ reports, detail and tone, are significant in explaining how the market responds to analysts’ reports, after controlling for the information contained in the reports’ quantitative summary measures. Report detail is hypothesized to reflect the level of effort expended by the analyst in preparing the report, and therefore the usefulness of their intrinsic firm value estimates. Report tone is predicted to signal the analyst’s underlying sentiment regarding the firm and may be used to assess the extent to which analysts’ conflicts of interest interfere with the mapping of firm value estimates into stock recommendations. Consistent with these hypotheses, we find that the tone of financial analyst reports contain significant information content incremental to the reports’ earnings forecasts and recommendations, and report complexity (one component of report detail) helps explain cross-sectional variation in the market’s response to the reports’ recommendations.  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