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   42563篇
  免费   664篇
  国内免费   78篇
财政金融   6056篇
工业经济   2348篇
计划管理   7575篇
经济学   8901篇
综合类   3026篇
运输经济   264篇
旅游经济   238篇
贸易经济   7387篇
农业经济   1473篇
经济概况   5366篇
信息产业经济   47篇
邮电经济   624篇
  2024年   38篇
  2023年   222篇
  2022年   492篇
  2021年   751篇
  2020年   696篇
  2019年   457篇
  2018年   2689篇
  2017年   2716篇
  2016年   1728篇
  2015年   799篇
  2014年   1018篇
  2013年   1627篇
  2012年   2394篇
  2011年   4764篇
  2010年   4300篇
  2009年   3255篇
  2008年   3482篇
  2007年   3619篇
  2006年   2059篇
  2005年   2056篇
  2004年   960篇
  2003年   1050篇
  2002年   713篇
  2001年   452篇
  2000年   262篇
  1999年   158篇
  1998年   97篇
  1997年   66篇
  1996年   61篇
  1995年   33篇
  1994年   39篇
  1993年   34篇
  1992年   31篇
  1991年   25篇
  1990年   17篇
  1989年   16篇
  1988年   9篇
  1987年   11篇
  1986年   19篇
  1985年   10篇
  1984年   26篇
  1983年   4篇
  1982年   7篇
  1981年   10篇
  1980年   3篇
  1979年   8篇
  1978年   7篇
  1976年   4篇
  1975年   4篇
  1974年   2篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
992.
The aim of this paper is to analyse the phenomenon of crowdfunding and determine whether it can be considered a service ecosystem, where the context frames innovation through value co-creation. A qualitative, multiple case study approach is used to analyse three platforms and six initiatives in the Spanish arts sector. The findings reveal that crowdfunding can be considered an ecosystem where value-in-context frames seven types of value co-creation, offering a contribution both to ecosystem theory and to the field of co-creation.  相似文献   
993.
In the wake of the recent announcement by the State Council concerning the provision of public rental housing across China, and the gradual reform of China's household registration system (hukou), this article explores how potential adjustments in government housing policies (namely access to public rental housing) influence the housing preferences of temporary migrants who are currently residing inside the chengzhongcun (urban villages) of Shenzhen. The results indicate that dissatisfaction with rental cost and living conditions in these urban villages are the key reasons for migrants wishing to move into public rental housing if it is offered to them — and not the fact that they are treated differently within the hukou system. Public rental housing is welcomed in particular by newly arriving migrants who live outside the Shenzhen Special Economic Zone (SEZ), and migrants who have decided to remain in Shenzhen for the foreseeable future. By contrast, dissatisfaction with urban villages is the sole contributor to housing preferences for those residing inside the SEZ.  相似文献   
994.
995.
996.
Innovation is the engine of development for enterprises, and there is an increasing trend to adopt an open innovation strategy. However, how to manage external resources in an open, collaborative and complementary manner, and in a shared environment that will yield the greatest networking effects, it is a challenging task. Because there is no such a satisfactory model for an open innovation strategy that combine operational mechanisms with the management of, external resources. Thhis article tries to fill the gap by adopting a resource-based perspective to construct an overall open innovation (OOI) business model. In this model, external resources are classified as industrial and non-industrial entities, to enable the identification of the interaction methods between manufacturing enterprises and external resources. The management of external resources involved in a Technology Open Innovation (TOI) cycle is given particular attention that includes: 1) the classification of the external resources of a TOI, 2) the general mechanisms extracted to promote qualified resources in and unqualified resources out, and 3) a business model to conceptualize the collaboration between enterprises and external resources. A case study of TOI is also provided to empirically verify its feasibility. This paper contributes to the literature by providing an original operational model and mechanism design for an open innovation strategy that is capable of managing external resources effectively.  相似文献   
997.
我国蛋鸡饲料消耗量巨大,因此对蛋鸡饲料的研究意义重大。本文从蛋鸡的生理特点及当前蛋鸡饲料的现状出发,分析国内外蛋鸡饲料的生产工艺及其优缺点,重点研究熟化粉状蛋鸡料的生产工艺、优点及该工艺推广的必要性及可行性。  相似文献   
998.
The paper studies the relations between open innovation climate and job satisfaction, in particular the causal effects of the various dimensions of open innovation climate on different facets of job satisfaction. We assume firms which pursuing open innovation climate will result in higher level of employee job satisfaction. Both open innovation climate and job satisfaction are assumed to be multidimensional constructs (second-order model). Meanwhile the difference caused by employees’ organizational level was also investigated. A partial least squares path model was developed, in which significant effects were discovered. This study provides valuable materials for hoteliers who want to promote open innovation climate in their organizations.  相似文献   
999.
Digitalisation of the health care system proceeds. Therefore it is to be expected that telemedicine applications will also be introduced into health care. Currently, the number of telemedicine applications in Germany is low and it is also scarce in comparison to foreign countries. This is striking because it is usually supposed that telemedicine applications have got a great potential to improve health care and reduce expenditures. Hence, this publication discusses offers, chances and the cost-effectiveness of telemedicine.  相似文献   
1000.
High-quality science communication to the public depends to a large extent on the way research findings are translated into comprehensible language and common speech. In this communicative process, a reasonable evaluation of the trustworthiness of empirical findings, based on an adequate interpretation of statistical analyses, is absolutely crucial. This paper’s authors argue that the credibility of science is jeopardised by two compromising developments within science itself: on the one hand, an inflation of ostensible empirical evidence related to misuses and misinterpretations of the concept of statistical significance, and, on the other, a sensationalist overvaluation of the results of single studies instead of an adequate representation of the available body of evidence in a given scientific field.  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