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   31612篇
  免费   424篇
财政金融   5775篇
工业经济   1866篇
计划管理   4886篇
经济学   7021篇
综合类   621篇
运输经济   110篇
旅游经济   233篇
贸易经济   6853篇
农业经济   647篇
经济概况   3397篇
信息产业经济   46篇
邮电经济   581篇
  2023年   79篇
  2021年   90篇
  2020年   203篇
  2019年   268篇
  2018年   2674篇
  2017年   2433篇
  2016年   1588篇
  2015年   307篇
  2014年   456篇
  2013年   1747篇
  2012年   837篇
  2011年   2455篇
  2010年   2225篇
  2009年   1963篇
  2008年   1926篇
  2007年   2244篇
  2006年   418篇
  2005年   661篇
  2004年   773篇
  2003年   882篇
  2002年   541篇
  2001年   358篇
  2000年   355篇
  1999年   313篇
  1998年   335篇
  1997年   278篇
  1996年   243篇
  1995年   230篇
  1994年   244篇
  1993年   243篇
  1992年   269篇
  1991年   263篇
  1990年   204篇
  1989年   187篇
  1988年   172篇
  1987年   167篇
  1986年   184篇
  1985年   248篇
  1984年   262篇
  1983年   251篇
  1982年   216篇
  1981年   200篇
  1980年   174篇
  1979年   170篇
  1978年   160篇
  1977年   137篇
  1976年   126篇
  1975年   144篇
  1974年   100篇
  1973年   104篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
981.
Policies to reduce aggressive tax avoidance are increasingly being implemented or discussed in many countries around the world. Tax authorities hope that such policies will generate new tax revenue by increasing overall tax compliance. We present an experimental design to investigate the effect of a stylized anti-avoidance tax policy on tax compliance behavior. We highlight that anti-avoidance tax policies that reduce tax avoidance can also induce an increase in tax evasion (“substitution effect”), which limits the additional tax revenue these policies will generate. We show that the degree of substitution depends crucially on behavioral factors such as tax morale. Policymakers therefore also need to consider behavioral features while designing such policies and estimating their potential effects.  相似文献   
982.
Design is a powerful weapon for modern companies so it is important to have excellent designers in the industry. The purpose of this study is to explore the learning problems and the resources that students use to overcome problems in undergraduate industrial design studio courses. A survey with open-type questions was conducted to collect data. Participants in this study were 189 undergraduate industrial design students from three universities, and two coding schema were formulated for analysing the data. The results demonstrated that the most difficult design tasks included concept generation, design presentation, and design research. The learning resources used to solve the learning problems included four categories: people, object, method, and environment. This information will increase the understanding of the learning process of students and provide a reference for teaching and the setting of learning resources in industrial design education.  相似文献   
983.
Emergent research has examined the antecedents to using information technology (IT) in the new product development (NPD) process and the impact of IT on NPD performance. Based on the resource‐based view (RBV) of the firm, this study hypothesizes that particular resources create IT capabilities that significantly enhance NPD outcomes. More specifically, this research extends previous work by investigating whether three complementary resources, namely an executive champion for IT, global engagement, and organizational innovativeness, influence IT capabilities (IT use frequency and IT replacement frequency), which in turn affect NPD outcomes (NPD task proficiency and NPD performance). To test the conceptual model, survey data were collected from 220 NPD and IT managers in a variety of large Japanese firms. The results show that an executive champion for IT and global engagement are predictors of both IT tool use and replacement frequency while organizational innovativeness contributes only to IT tool replacement frequency. The results also indicate that both IT tool use and replacement frequency have a positive effect on NPD task proficiency, which improves NPD performance. This research contributes to the literature by adding understanding of the role of IT in NPD at the firm level in four ways. First, it examines particular organizational complementary resources and their relationship to IT capabilities. Second, it examines the RBV and IT in the context of NPD, an important business process. Third, it measures IT usage in a more granular fashion (i.e., IT tool use frequency and IT replacement frequency) rather than simply IT usage as a dichotomy. Finally, through testing the proposed model with data collected from Japanese firms, this study provides empirical evidence from an Asian country to answer the call for more NPD research to be conducted in countries other than North American and Western European contexts. The findings of the study also provide implications for managers. Importantly, they indicate that an executive level champion for IT is a key influencer in facilitating IT usage and replacement, and likely can help generate awareness of and support for greater IT investments so the firm can create IT capabilities for effective NPD.  相似文献   
984.
985.
Although a large literature argues that European settlement outside of Europe during colonization had an enduring effect on economic development, researchers have been unable to assess these predictions directly because of an absence of data on colonial European settlement. We construct a new database on the European share of the population during colonization and examine its association with economic development today. We find a strong, positive relation between current income per capita and colonial European settlement that is robust to controlling for the current proportion of the population of European descent, as well as many other country characteristics. The results suggest that any adverse effects of extractive institutions associated with small European settlements were, even at low levels of colonial European settlement, more than offset by other things that Europeans brought, such as human capital and technology.  相似文献   
986.
987.
We study the merits of capped retirement products with guarantee for investors who have the flexibility to dynamically adjust their investment strategy. All contracts under consideration are fairly priced such that the net profit of the provider is zero. Without the rider, an expected utility maximizing CRRA investor does not want an investment cap. Here, she commits herself to a strategy a priori. With the flexibility rider, the optimization problem changes and the optimal strategy is a response to an exogenously set price. A fair pricing then anticipates the optimal response of the investor. We show that the maximum expected utility of the investor can, for anticipated fairly priced products, be obtained for a finite cap. Thus, a capped product design can give a Pareto improvement to the otherwise uncapped contract version.  相似文献   
988.
989.
990.
Creativity is a critical aspect of competitiveness in all trades and professions. In the case of designers, creativity is of the utmost importance. Based on the perspective of industrial design, the relationship between creativity and time pressure was investigated in this study using control and experimental groups. In the first part of the study, fuzzy theory, the Creative Product Analysis Matrix, the Analytic Hierarchy Process, and Consensus Assessment Techniques were integrated to establish a method to evaluate creativity in industrial design. Moreover, the experimental and control groups were compared using three tests: the Torrance Tests of Creative Thinking, the product concept development test, and the product aesthetic development test. Six hypotheses were examined. Based on an analysis of the results, suggestions are offered to improve creativity management. The suggestions can serve as reference for creativity management of individuals, groups and companies in order to make the concept generating process more efficient.  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