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   15256篇
  免费   300篇
  国内免费   2篇
财政金融   2701篇
工业经济   1024篇
计划管理   2639篇
经济学   3096篇
综合类   120篇
运输经济   78篇
旅游经济   222篇
贸易经济   2791篇
农业经济   622篇
经济概况   2099篇
邮电经济   166篇
  2020年   152篇
  2019年   213篇
  2018年   349篇
  2017年   361篇
  2016年   367篇
  2015年   258篇
  2014年   364篇
  2013年   1437篇
  2012年   536篇
  2011年   480篇
  2010年   439篇
  2009年   427篇
  2008年   467篇
  2007年   374篇
  2006年   371篇
  2005年   348篇
  2004年   255篇
  2003年   284篇
  2002年   291篇
  2001年   277篇
  2000年   257篇
  1999年   272篇
  1998年   241篇
  1997年   226篇
  1996年   229篇
  1995年   203篇
  1994年   196篇
  1993年   241篇
  1992年   211篇
  1991年   203篇
  1990年   179篇
  1989年   191篇
  1988年   165篇
  1987年   163篇
  1986年   153篇
  1985年   278篇
  1984年   262篇
  1983年   239篇
  1982年   221篇
  1981年   213篇
  1980年   222篇
  1979年   209篇
  1978年   178篇
  1977年   194篇
  1976年   161篇
  1975年   152篇
  1974年   141篇
  1973年   142篇
  1971年   114篇
  1970年   112篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
121.
We investigated U.S. and Canadian reactions to workplace drug and alcohol testing programs. Canadian truck drivers (n = 183) deemed drug and alcohol testing policies less fair, and were less accepting of these policies, than their American counterparts (n = 153). We also compared the perspectives of recipients versus third-party observers with regard to their reactions to a drug testing program. Unlike the pattern observed among American observers, the responses by Canadian observers were highly similar to those of the recipients. Canadian observers were more inclined to file a formal protest regarding the implementation of a drug and alcohol testing program than were U.S. observers. The results also showed that procedural and interactional justice principles contributed to the program's fairness, acceptance, and lower levels of protest intentions in both Canada and the United States. We propose that scholars and practitioners can gain a better understanding of multinational reactions to drug and alcohol testing by considering not only cultural but also historical, social, political, and other environmental factors that can shape reactions to personnel practices.  相似文献   
122.
In this paper we present an effective algorithm for the construction and the identification of two-level nonisomorphic orthogonal arrays. Using this algorithm, we identify and list a full catalogue of nonisomorphic orthogonal arrays with parameters OA(24,7,2,t), OA(28,6,2,t) and OA(32,6,2,t), t ≥ 2. Some statistical properties of these designs are also considered.  相似文献   
123.
This paper presents an analytical approach to the tactical question: ‘What level of enforcement over time allows one to eliminate a street market for illicit drugs while expanding the least possible total effort?’ The analysis is done in the context of Caulkins' model [6] which predicts the rate of change of dealers as a function of enforcement level and several market parameters. Our analysis suggests that the simple strategy of using the maximum available enforcement intensity until the market has been eliminated minimizes the total enforcement effort required.  相似文献   
124.
Selecting Sites for New Facilities Using Data Envelopment Analysis   总被引:3,自引:0,他引:3  
This paper develops a mathematical programming model for obtaining a best set of sites for planned facilities. The model is concerned with those situations where resource constraints are present. The specific setting for the paper involves the selection of sites for a set of retail outlets, wherein the ratio of aggregate outputs to inputs for the selected set is maximal among all possible sets that could be chosen. At the same time, the model guarantees that the only sets of stores allowable are those for which the available resources are used to the maximum extent possible.  相似文献   
125.
The purpose of this paper is to examine the role of euphemism and rhetoric in influencing organizational members' constructions of reality and sense-making abilities. The discussion opens with a return to the role of the sociology of knowledge, before exploring the purpose and outcomes of euphemism and rhetoric. Heideggerian phenomenology was used to collect this particularly poignant story from Adrian (a pseudonym), who was made redundant from his workplace after heart bypass surgery. Weick's theoretical exposition of sense-making in organizations is used to examine Adrian's story, with the purpose of demonstrating that sense-making is highly influenced by the use of rhetoric and euphemism (K. E. Weick, 1995, Sense-making in Organizations. Thousand Oaks, CA: Sage). When the truth finally comes out, the outcome is seen to be serious—even life threatening.  相似文献   
126.
Economic theory suggests that an increase in the expected length of stay in a dwelling increases the probability of a household choosing to own a house rather than rent. This hypothesis is derived from recognition that there are substantial transaction costs associated with homeownership and increased expected time in the home reduces the annualized transaction cost. Using a military data set, we confirm that expected length of stay in a dwelling and the transaction costs of selling are very important to the ownership decision. Our best estimate of the transaction costs of selling a home are the sum of 3% of house value and 4% of household earnings.  相似文献   
127.
The simulation problem is one of the most commonly used formats in computer-assisted instruction (CAI). In medical education, a patient simulation problem is known as a patient management problem (PMP). A number of computerized PMP systems are currently available. However, to date, there is no record of PMP systems having been developed using artificial intelligence. This is noteworthy since artificial intelligence techniques could help in the generation of more effective and intelligent instructional systems.

This paper analyzes and evaluates existing instructional simulation software in clinical medicine in terms of effective educational design attributes. Components of effective PMP systems thus identified are incorporated into a computerized instructional system which uses artificial intelligence techniques for teaching problem-solving and diagnostic skills to undergraduate medical students.  相似文献   

128.
A strategic human resource perspective of firm competitive behavior   总被引:1,自引:0,他引:1  
Embedded within firms are unique stores of intangible human assets that likely influence the way firms compete. We argue that the human and social capital of a firm, particularly at the upper echelon and board of director (BOD) levels, contribute to the firm's awareness of the competitive environment and its motivation and ability to undertake numerous, complex, and forceful competitive actions. We also suggest that the firm's executive compensation systems moderate the effects of these intangible human assets on firm competitive behavior. By examining how human capital, intra-firm social capital, and executive compensation influence firm competitive behavior, we advance a strategic HRM perspective of firm competitive behavior and outline several implications for future research.  相似文献   
129.
Using a sample of S & P 500 firms, we find that golden parachutes are associated with concentrated external ownership, less concentrated internal ownership, and non-Delaware incorporation. We find little support that concentrated external owners use golden parachutes as credible commitment devices. The general multivariate results support the incentive alignment hypothesis, and reaffirm the view that golden parachutes are a mechanism used to align managerial and shareholder interests when there is a separation between ownership and control. (JEL G32)  相似文献   
130.
This paper reports on a study to compare self-reports during an interview with staff who attended a University health centre in Turkey, with the records of visits to the same health centre over the previous 12 months. Design of the study reflects the effects of importance of the event, duration since the event, frequency of the occurrence of the event, measurement scale of the event, and bounded and unbounded recalling. In order to assess the extent of recall error, responses to retrospective questions on health centre visits are compared with administrative records. Statistical models are proposed for short and long term human memory recall error effects on responses.  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