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   22731篇
  免费   441篇
  国内免费   23篇
财政金融   3509篇
工业经济   1013篇
计划管理   3756篇
经济学   5640篇
综合类   511篇
运输经济   152篇
旅游经济   129篇
贸易经济   5856篇
农业经济   217篇
经济概况   1791篇
信息产业经济   44篇
邮电经济   577篇
  2024年   7篇
  2023年   138篇
  2022年   87篇
  2021年   134篇
  2020年   249篇
  2019年   269篇
  2018年   2623篇
  2017年   2485篇
  2016年   1588篇
  2015年   353篇
  2014年   424篇
  2013年   1404篇
  2012年   803篇
  2011年   2177篇
  2010年   2083篇
  2009年   1748篇
  2008年   1665篇
  2007年   1951篇
  2006年   217篇
  2005年   523篇
  2004年   552篇
  2003年   642篇
  2002年   327篇
  2001年   137篇
  2000年   105篇
  1999年   47篇
  1998年   52篇
  1997年   31篇
  1996年   40篇
  1995年   22篇
  1994年   27篇
  1993年   19篇
  1992年   18篇
  1991年   13篇
  1990年   10篇
  1989年   14篇
  1986年   18篇
  1985年   20篇
  1984年   21篇
  1983年   12篇
  1982年   16篇
  1981年   11篇
  1980年   6篇
  1978年   5篇
  1976年   8篇
  1975年   4篇
  1974年   8篇
  1973年   4篇
  1969年   4篇
  1889年   4篇
排序方式: 共有10000条查询结果,搜索用时 78 毫秒
11.
12.
Quality & Quantity - Within-subject designs (WSDs) remain unpopular in psychology. Social psychologists have argued that they create “demand” and “order” effects....  相似文献   
13.
Without guaranteed compensation, granted by the German Renewable Energy Sources Act (Erneuerbare Energien Gesetz/EEG), biogas plants compete with all other plant types on the market for electrical energy. However, exchange-based electricity products do not currently permit an economically viable operation of biogas plants owing to their cost situation.  相似文献   
14.
15.
Do local partners' network attributes affect the survival of high-tech international joint ventures (IJV)? How does the effect of network attributes vary in different subnational institutional environments? While the classic economic explanation for IJV formation and subsequent performance draws from the resource-based view (RBV), we add the relational dimension to explain that IJV survival may be affected by local partners’ relation-specific assets within the local network. We test the effect of the local partners’ network attributes as calculated by UCINET (centrality, network status, and structural hole position) on IJV survival. We additionally assert that this relationship is moderated by subnational institutional heterogeneity. Using our sample of 125 IJV dyadic pairs of US multinational enterprises (MNEs) operating in high-tech industries and their local partners in China, we find partial support for our claims.  相似文献   
16.
We explore the innovation performance benefits of alliances for spin-off firms, in particular spin-offs either from other firms or from public research organizations. During the early years of the emerging combinatorial chemistry industry, the industry on which our empirical analysis focuses, spin-offs engaged in alliances with large and established partners, partners of similar type and size, and with public research organizations, often for different reasons. We seek to understand to what extent alliances of spin-offs with other firms (either large- or small- and medium-sized firms) affected their innovation performance and also how this performance may have been affected by their corporate or public research background. We find evidence that in general alliances of spin-offs with other firms, in particular alliances with large firms, increased their innovation performance. Corporate spin-offs that formed alliances with other firms outperformed public research spin-offs with such alliances. This suggests that, in terms of their innovation performance, corporate spin-offs that engaged in alliances with other firms seemed to have benefitted from their prior corporate background. Interestingly, it turns out that the negative impact of alliances on the innovation performance of public research spin-offs was largely affected by their alliances with small- and medium-sized firms.  相似文献   
17.
18.
While many studies on the Fourth Industrial Revolution (FIR) focus on efficiency, productivity and economic progress, only a few have considered its ethical aspects. This article tries to contribute to filling this vacuum by providing a comprehensive approach to ethical risks at the workplace. Drawing upon Catholic social teaching (CST)—addressed to all people of good will—it analyzes ethical aspects at the workplace posited by the FIR, and more particularly by Industry 4.0, which is at the core of this revolution. CST emphasizes the dignity of the worker and the necessity to flourish at the workplace. While robots, artificial intelligence, and interconnected technologies are only instrumental, the real subject of work is the worker. This casts specific light on the ethical issues analyzed, including effects on employment, wages and inequality, human quality treatment, relational aspects, safety and health, surveillance on employees, and meaningful work.  相似文献   
19.
Studies on dynamic managerial capabilities still have a rather theoretical nature, and there is great difficulty in finding a valid, reliable instrument to measure this construct. The present study contributes to solving this problem: It aims to develop and validate a scale to measure dynamic managerial capabilities. In this investigation, we develop a scale for three factors related to dynamic managerial capabilities: human capital, managerial cognition (already described in the literature), and relationship networks. The prominent finding in this research is the factor that is referred to here as relationship networks.  相似文献   
20.
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