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   24200篇
  免费   532篇
  国内免费   1篇
财政金融   4655篇
工业经济   1725篇
计划管理   3582篇
经济学   5360篇
综合类   380篇
运输经济   176篇
旅游经济   435篇
贸易经济   3669篇
农业经济   1260篇
经济概况   3434篇
信息产业经济   1篇
邮电经济   56篇
  2021年   140篇
  2020年   250篇
  2019年   417篇
  2018年   500篇
  2017年   506篇
  2016年   526篇
  2015年   289篇
  2014年   541篇
  2013年   2479篇
  2012年   729篇
  2011年   811篇
  2010年   678篇
  2009年   759篇
  2008年   732篇
  2007年   636篇
  2006年   575篇
  2005年   486篇
  2004年   507篇
  2003年   454篇
  2002年   508篇
  2001年   443篇
  2000年   459篇
  1999年   443篇
  1998年   407篇
  1997年   417篇
  1996年   412篇
  1995年   359篇
  1994年   369篇
  1993年   400篇
  1992年   409篇
  1991年   403篇
  1990年   329篇
  1989年   301篇
  1988年   291篇
  1987年   302篇
  1986年   311篇
  1985年   469篇
  1984年   433篇
  1983年   400篇
  1982年   377篇
  1981年   345篇
  1980年   390篇
  1979年   318篇
  1978年   270篇
  1977年   256篇
  1976年   198篇
  1975年   242篇
  1974年   193篇
  1973年   188篇
  1972年   133篇
排序方式: 共有10000条查询结果,搜索用时 18 毫秒
991.
We examine the effects of thin trading on the specification of event study tests. Simulations of upper and lower tail tests are reported with and without variance increases on the event date across levels of trading volume. The traditional standardized test is misspecified for thinly traded samples. If return variance is unlikely to increase, then Corrado's rank test provides the best specification and power. With variance increases, the rank test is misspecified. The Boehmer et al. standardized cross-sectional test (Event-study methodology under conditions of event-induced variance, Journal of Financial Economics 30, pp. 253–272) is properly specified, but not powerful, for upper-tailed tests. Lower-tailed alternative hypotheses can best be evaluated using the generalized sign test.  相似文献   
992.
河北省外向型经济发展的战略构想   总被引:1,自引:0,他引:1  
目前河北省的外向型经济,无论对外开放方面,还是对内开放方面,都还比较落后,对全省经济发展的拉动力较弱,促进河北省外向型经济发展,应根据本省的实际情况大力发展劳动密集型产业,发挥外销产品的比较优势,加快高新技术产业的发展步伐,努力实现贸易方式、引资方式和引资结构的多元化;应根据我国和国际的经济战略调整,精心研究制定我省的外向型经济发展战略,并积极改善投资环境。  相似文献   
993.
Success Factors in Product Innovation: A Selective Review of the Literature   总被引:3,自引:0,他引:3  
In today's increasingly competitive climate, more and more managers are having to update themselves on the range of factors that determine product innovation success. Such successes can be measured at the project (product) level or at the program level. Axel Johne and Patricia Snelson have prepared a review of factors associated with achieving success in a high proportion of recently developed new products. The authors address practical questions, such as the following: To what extent can product innovation be planned? Should development tasks be scheduled sequentially or in parallel? What is the proper degree of formality in effective new product decision making? What are the optimal organizational arrangements? The article concentrates on recent writings, drawing chiefly from journal articles published after 1980, including a large number from the Journal of Product Innovation Management. Factors contributing to success are ordered according to the now well-known McKinsey 7 Ss framework popularized by Peters and Waterman in their book In Search of Excellence. Detailed development tasks are considered according to the schema advanced by Crawford in his book New Products Management.  相似文献   
994.
Workers' rewards and career perspectives often depend on how their supervisors perceive their performance. However, evaluating a worker's performance is often difficult. We develop a model in which a worker is uncertain about his own performance and about his supervisor's ability to assess him. The supervisor gives the worker a performance appraisal aiming to affect both the worker's self‐perception and his own credibility in assessing the performance. We examine how performance appraisals affect the worker's future performance. Our model's predictions are consistent with empirical findings. Supervisors give, on average, “too” positive appraisals, and both positive and negative feedback can (de)motivate workers.  相似文献   
995.
996.
Research Summary: This study addresses a theoretical dilemma regarding how alliance network constraint (reflected by network cohesion) affects a firm’s alliance formation with new partners. Using a network pluralism approach, we separate a firm’s ego alliance network into two activity‐based networks—an exploratory network and an exploitative network—based on the primary value chain activity involved in each alliance. We argue that the cohesion of exploratory or exploitative networks has an inverted U‐shaped effect on the addition of new partners in the same activity‐based network, and a positive effect on the addition of new partners in the other network. Results based on data from the biotechnology industry largely support our predictions with one exception. Our study contributes to both scholarly understanding of network embeddedness and alliance practice. Managerial Summary: The structure of firms’ ongoing alliance networks may have paradoxical implications for their efforts to search for and form alliance with new partners. That is, when a firm’s alliance partners are tightly connected with each other, the cohesive network tends to both encourage and impede the focal firm to add new partners. We resolve this dilemma by showing that when a firm is deeply entrenched in a cohesive alliance network conducting a certain type of activities (e.g., R&D activities), it may not easily add new R&D alliance partners. However, it may still be able to escape from the cohesive R&D alliance network by seeking new partners conducting other activities (e.g., manufacturing activities).  相似文献   
997.
Suffering comes in many forms that significantly impact organizations’ operations and performance. As a result, recent research on compassion organizing seeks to explain how efforts to notice, feel, and respond to suffering create organizational (and societal) benefits. Widespread suffering can be generated by natural disasters, which in turn can trigger compassionate organizational responses. In this paper, we build on social capital theory to theorize about how compassionate ventures leverage network relationships to identify and mobilize resources. We also explore how differences in these approaches influence the magnitude, speed, and customization of the response, all of which are theorized indicators of the effectiveness of compassion organizing in alleviating suffering. We use structural equation modelling to test our model and find that compassionate ventures with stronger ties to the local community are more likely to bundle (i.e., stretch) resources, which facilitates a speedy, customized, and large magnitude response. In contrast, those with stronger ties outside the local community are more likely to pursue (i.e., chase) new resources, which results in a large magnitude response, but one that is not associated with speed or customization. We discuss the implications of our findings and make recommendations for future research.  相似文献   
998.
Even though many firms conduct most of their business domestically, international management research has remained remarkably silent on the role of a firm's domestic footprint in its internationalization strategy. We shed light on that role by exploring how the size of a firm's domestic footprint influences the cultural distance that the firm adds to its country portfolio when expanding internationally. Integrating resource dependence theory and the attention‐based view, we hypothesize that a firm's domestic footprint has a negative relationship with added cultural distance (ACD), and that domestic policy uncertainty strengthens this relationship whereas domestic demand uncertainty weakens it. We find robust support for our hypotheses in a sample of the world's largest retailers covering the period 2000–07, indicating that a firm's domestic footprint and domestic environmental uncertainties jointly shape cross‐cultural expansion strategies. Our findings suggest that ACDs reflect headquarters executives' desire to avoid ineffective foreign expansions, hinting at possible biases in studies of the performance effects of distance.  相似文献   
999.
This paper examines determinants of process innovation introductions across 115 (mostly) developing countries. Empirical research on process innovations lags behind product innovations. Accounting for firm characteristics, R&D, regulations and taxes, and corruption, results show that sole proprietors and R&D‐performing firms were more likely to introduce innovations, whereas greater prosperity made them less likely to do so. Corruption had a greasing effect, whereas firms in island nations were less likely to introduce, ceteris paribus. Effects of regulations and taxes and other firm characteristics were largely insignificant. Finally, some differences existed across manufacturing and service industries and across prevalence of innovation introductions.  相似文献   
1000.
This study explores how supervisor career mentoring contributes to contemporary organizational career development, which strives to foster employees' promotability while strengthening their intention to stay. Specifically, we focus on the implications of career mentoring in team contexts. Applying a multilevel framework, we distinguish between individual‐level differentiated mentoring (i.e., an employee's mentoring perceptions as compared to those of other team members) and group‐level career mentoring climate (i.e., the average perception across all group members). In a workplace setting, we collected data from vocational job starters (N ranged from 230 to 290) and their company supervisors (N ranged from 56 to 68). We find that career mentoring climate positively relates to promotability, more so than differentiated career mentoring. Both career mentoring climate and differentiated career mentoring are positively related to the intention to stay. At the individual level, this relationship is mediated by job satisfaction. We discuss theoretical and practical implications of differentiated and group‐level mentoring.  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