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   10975篇
  免费   167篇
财政金融   1650篇
工业经济   612篇
计划管理   1638篇
经济学   2569篇
综合类   397篇
运输经济   31篇
旅游经济   51篇
贸易经济   2222篇
农业经济   334篇
经济概况   1606篇
信息产业经济   3篇
邮电经济   29篇
  2023年   32篇
  2021年   40篇
  2020年   78篇
  2019年   101篇
  2018年   848篇
  2017年   848篇
  2016年   512篇
  2015年   102篇
  2014年   206篇
  2013年   641篇
  2012年   335篇
  2011年   832篇
  2010年   760篇
  2009年   715篇
  2008年   677篇
  2007年   805篇
  2006年   169篇
  2005年   213篇
  2004年   274篇
  2003年   295篇
  2002年   170篇
  2001年   85篇
  2000年   116篇
  1999年   78篇
  1998年   98篇
  1997年   63篇
  1996年   96篇
  1995年   58篇
  1994年   77篇
  1993年   78篇
  1992年   93篇
  1991年   81篇
  1990年   88篇
  1989年   48篇
  1988年   55篇
  1987年   61篇
  1986年   55篇
  1985年   91篇
  1984年   86篇
  1983年   71篇
  1982年   68篇
  1981年   77篇
  1980年   62篇
  1979年   71篇
  1978年   71篇
  1977年   57篇
  1976年   59篇
  1975年   49篇
  1974年   36篇
  1973年   40篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
This paper presents an approach to assessing the efficacy of public spending on research and development in state programs. At present, there is a need to develop a unified approach to the analysis and evaluation of the efficacy of such spending from the perspective of participants in state programs (federal executive bodies). The proposed approach does not allow evaluating the efficacy of public spending on the development of research areas assigned to the authors.  相似文献   
2.
3.
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   
4.
5.
Journal of Business Ethics - Prior studies suggest that firms headquartered in areas with strong religious social norms have higher ethical standards. In this study, we examine whether the ethical...  相似文献   
6.
This paper examines the international trade of a variety of genetically modified (GM) food products over a 27-year period (1984–2011) with data from the United Nations using the tools of social network analysis. The results indicate that each of the different crops have a distinctive pattern of trade that has changed over time due to a number of different factors. Also, trade in agricultural commodities became more diversified over time, dominated less by the United States and other nations central in the trade networks and trade in the individual GM crops was stable over time. Countries maintained their trading partners for specific crops, despite the adoption of the genetically modified varieties. The economic implications of these results are discussed for specific countries.  相似文献   
7.
Prior literature examined reciprocity in the context of value creation. However, research has yet to examine whether reciprocity exists in value sharing. To address this gap, the authors examine retailer’s reciprocal value sharing with its manufacturer in relation to new product introductions. The authors test, via a survey of retail managers, whether reciprocal value sharing is influenced by an interaction of manufacturer’s prior new product success with innovativeness of a manufacturer’s products and the frequency of new product introduction. The results indicate that a retailer’s reciprocal value sharing is greater when the manufacturer historically launched successful new products, and that this effect is decreased with the innovativeness of a manufacturer’s products but increased with the frequency of new product introduction.  相似文献   
8.
9.
Firms increasingly use games to interact with their customers. Yet, surprisingly little is known about whether, when, and how such “gamified” interactions engage consumers with a firm’s brand, thereby facilitating self–brand connections. Building on flow theory, we show that gamified interactions that are highly interactive and optimally challenging facilitate self–brand connections, because such games lead to emotional and cognitive brand engagement. A field study and three experiments across various product domains and game designs support our theory. We also identify conditions under which consumers do not become engaged with a brand, namely when firms restrict their decisional control either to voluntarily participate in the game (i.e., compulsory play) or to spend as much time as desired playing the game (i.e., time pressure). Our findings advance existing knowledge about the use of games in marketing and provide important implications for how marketers can harness their potential to build self–brand connections.  相似文献   
10.
Several studies have shown a relationship between the stocks of migrants and country-level investment in the home country; however the mechanism through which this relationship operates is still unexplored. We use a field experiment in which participants who are recent immigrants send information about risky decisions to others in their social network in their home country. The results demonstrate how this information influences decisions in the home country. We find that the advice given by family members and decisions made by friends significantly affects an individual’s risky decision-making.  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