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   21073篇
  免费   531篇
财政金融   3970篇
工业经济   1524篇
计划管理   3512篇
经济学   4754篇
综合类   247篇
运输经济   162篇
旅游经济   327篇
贸易经济   3679篇
农业经济   886篇
经济概况   2525篇
信息产业经济   2篇
邮电经济   16篇
  2023年   150篇
  2021年   185篇
  2020年   304篇
  2019年   387篇
  2018年   578篇
  2017年   656篇
  2016年   615篇
  2015年   345篇
  2014年   528篇
  2013年   2519篇
  2012年   694篇
  2011年   738篇
  2010年   664篇
  2009年   683篇
  2008年   590篇
  2007年   527篇
  2006年   465篇
  2005年   461篇
  2004年   390篇
  2003年   409篇
  2002年   375篇
  2001年   389篇
  2000年   366篇
  1999年   340篇
  1998年   338篇
  1997年   323篇
  1996年   308篇
  1995年   258篇
  1994年   265篇
  1993年   285篇
  1992年   312篇
  1991年   287篇
  1990年   250篇
  1989年   240篇
  1988年   237篇
  1987年   230篇
  1986年   247篇
  1985年   322篇
  1984年   293篇
  1983年   304篇
  1982年   306篇
  1981年   267篇
  1980年   288篇
  1979年   242篇
  1978年   235篇
  1977年   208篇
  1976年   198篇
  1975年   190篇
  1974年   165篇
  1973年   146篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
中国股市从不久前的辉煌之巅急转直下,而与此同时,这个全球第一人口大国的投资者们又将获得新的渠道进军包括美国在内的海外股市。  相似文献   
62.
Many studies examine firm private knowledge, but purport to be generalizable to the totality of firm knowledge, both public and private. This study demonstrates that public and private firm knowledge are empirically separable constructs that have significant and yet different influences on innovative outcomes. The example of product development effectiveness within this study shows that both public and private knowledge are significantly related to product development quality; however, public knowledge is negatively related to quality lapses while private knowledge is positively related to quality lapses. Copyright © 2002 John Wiley & Sons, Ltd.  相似文献   
63.
We extend the concept of piecewise linear histogram introduced recently by Beirlant, Berlinet and Györfi. The disadvantage of that histogram is that in many models it takes on negative values with probability close to 1. We show that for a wide set of models, the extended class of estimates contains a bona fide density with probability tending to 1 as the sample size n increases to infinity. The mean integrated absolute error in the extended class of estimators decreases with the same rate n–2/5 as in the original narrower class.  相似文献   
64.
This study investigated (1) whether potential future purchasing agents were predisposed to accept gratuities or whether the practice of gratuity acceptance is a manifestation of the job itself, (2) whether the existence of a code of ethics forbidding gratuity acceptance curtails the occurrence, and (3) whether disparities in ethics policies between the sales and purchasing functions affect gratuity acceptance. Hypotheses based upon the concepts of organizational concern and institutionalized ethics are developed and empirically tested. Results suggest that future purchasing agents are predisposed to accept gratuities and that formal written ethics policies decrease the acceptance of gratuities. Disparities in ethics policies between the sales and purchasing functions concerning gratuities failed to affect gratuity acceptance significantly.Gregory B. Turner is assistant professor of marketing at Livingston University. He has published inThe International Journal of Logistics Management and theTransportation Journal.G. Stephen Taylor is Associate Professor of management at Mississippi State University. His research interests include ethics in computer usage, performance appraisal, and turnover control.Mark F. Hartley is Assistant Professor and National Association of Purchasing Management/Carolinas-Virginia chair of Purchasing at the College of Charleston. His research interests include ethics and professionalization of the purchasing function.  相似文献   
65.
This paper develops a conceptual framework and applies it to analyze the dynamics of national interests in prenegotiation. The study's goals are to develop a systematic approach for analyzing prenegotiation processes and provide results that will have practical utility for negotiators. Specifically, the approach is applied to the prenegotiation process of the 1992 United Nations Conference on Environment and Development (UNCED), examining the financial resources issue, in particular. Decision analytic models were built to account for three key negotiation actors, and sensitivity analyses were performed to evaluate the incremental modifications to issue preferences required to achieve mutually acceptable compromises. Conclusions are drawn that indicate the extent of flexibility required of key negotiation actors to take advantage of the opportunities for agreement in the financial resources issue area. The conceptual framework and methodological approach explored in this paper can provide practical assistance as a planning tool for negotiators, helping them to diagnose the situation and plan strategies for future environmental and other multilateral negotiations. The approach can suggest specific opportunities for compromise and the degree and type of flexibility needed to achieve a convergence of interests on the issue.  相似文献   
66.
A multivariate model of the process by which managers decide to release public forecasts of their firms' earnings is developed, based on factors that are hypothesized to affect the demand for and the willingness to supply such forecasts. We test the model on data from a comprehensive sample of earnings forecasts, and find support for our hypotheses about the likely joint influence of those factors. Larger firm size, greater leverage, higher and more stable earnings rates and less rapid growth rates are found to be associated with an increased propensity for management to provide earnings forecasts for their firms.  相似文献   
67.
An Internet presence is a critical early component in the process of building towards a fully operational and unified e‐commerce strategy. E‐commerce has significantly impacted logistics/supply chain strategies and the development and implementation of a website have become key issues for many firms within the transportation industry. This study provides an overview of website content within the motor carrier industry. Content analysis was used to assess the site design, informational content, and the interactive content of 152 motor carrier websites, and to compare the features offered on the Top 100 motor carrier firm websites with those offered on the sites of smaller carrier firms.  相似文献   
68.
The primary purpose of this research was to investigate the effect of investment in information technology in a supply chain. The results of that investigation are presented by focusing on an empirically tested supply chain relationship model containing both behavioral and operational constructs. The four behavioral constructs represented in the model are relationship trust, relationship commitment, relationship dependence, and long‐term relationship orientation. The four operational constructs represented in the model are retailer investment in interorganizational information technology, perceived supplier investment in interorganizational information technology, logistics efficiency, and logistics effectiveness. Among other findings, the results of the investigation found that perceived supplier investment in interorganizational information technology has a significant and positive effect on logistics efficiency.  相似文献   
69.
Close relationships between and among supply chain members are becoming more prevalent. However, there is lack of agreement in the literature and in practice concerning the characteristics of different interorganizational relationships. The resultant confusion is an obstacle to the progression of research and could cause problems among firms in a supply chain. Based on previous research and an exploratory study conducted with company executives responsible for supply chain management activities, this article seeks to introduce the concept of relationship magnitude (i.e., the extent or degree of closeness or strength of the relationship) and differentiate it from relationship type (i.e., classes of relationships that share common traits). Implications for managers and opportunities for future research are provided.  相似文献   
70.
The economic impact of adopting herd health programs for mastitis and reproduction by small-scale dairy producers of Central Thailand was assessed using a policy analysis matrix (PAM). Following a reduction in the incidence of bovine disease on adopter farms, an increase in private net profits is observed. More importantly the social costs of supporting dairy farmers is reduced; the PAM effective protection coefficient was reduced by 35% for mastitis program adopters and by 44% for reproductive program adopters, indicating improved social efficiency of dairy policy. Other indicators of efficiency and policy implications are discussed.  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