全文获取类型
收费全文 | 23389篇 |
免费 | 133篇 |
专业分类
财政金融 | 3854篇 |
工业经济 | 1205篇 |
计划管理 | 3534篇 |
经济学 | 5398篇 |
综合类 | 596篇 |
运输经济 | 56篇 |
旅游经济 | 97篇 |
贸易经济 | 5530篇 |
农业经济 | 348篇 |
经济概况 | 2285篇 |
信息产业经济 | 45篇 |
邮电经济 | 574篇 |
出版年
2021年 | 33篇 |
2020年 | 69篇 |
2019年 | 108篇 |
2018年 | 2493篇 |
2017年 | 2266篇 |
2016年 | 1389篇 |
2015年 | 166篇 |
2014年 | 261篇 |
2013年 | 801篇 |
2012年 | 645篇 |
2011年 | 2181篇 |
2010年 | 1986篇 |
2009年 | 1698篇 |
2008年 | 1711篇 |
2007年 | 2062篇 |
2006年 | 228篇 |
2005年 | 530篇 |
2004年 | 621篇 |
2003年 | 736篇 |
2002年 | 401篇 |
2001年 | 184篇 |
2000年 | 179篇 |
1999年 | 124篇 |
1998年 | 127篇 |
1997年 | 99篇 |
1996年 | 101篇 |
1995年 | 79篇 |
1994年 | 95篇 |
1993年 | 81篇 |
1992年 | 102篇 |
1991年 | 88篇 |
1990年 | 88篇 |
1989年 | 77篇 |
1988年 | 65篇 |
1987年 | 73篇 |
1986年 | 83篇 |
1985年 | 122篇 |
1984年 | 107篇 |
1983年 | 108篇 |
1982年 | 116篇 |
1981年 | 105篇 |
1980年 | 96篇 |
1979年 | 87篇 |
1978年 | 98篇 |
1977年 | 75篇 |
1976年 | 76篇 |
1975年 | 69篇 |
1974年 | 57篇 |
1973年 | 60篇 |
1972年 | 32篇 |
排序方式: 共有10000条查询结果,搜索用时 234 毫秒
71.
Rudy K. Moenaert Dirk Deschoolmeester Arnoud De Meyer William E. Souder 《R&D Management》1992,22(1):021-040
Abstract The research question in the present article can be phrased in the following way: what are the elements which influence the perception of the utility of information received from another function? A field study research has been conducted in 40 Belgian companies. In each company, we have studied two on-going innovation projects (one planning project, one development project). Crossfunctional communication behaviours at the R&D/marketing interface have been measured by means of mailed structured questionnaires. Three-hundred and eighty-six questionnaires have been returned. The data analyses show that there are four underlying information dimensions, i.e. the perceived relevance, the perceived comprehensibility, the perceived novelty and the perceived credibility of information. We also discuss some contingency variables (function of the message receiver, stage in the innovation process) that might moderate the impact of these dimensions. It will be shown that the interaction between source and receiver has a significant impact on the perceived credibility, the perceived comprehensibility and the perceived novelty of the received information. 相似文献
72.
73.
74.
Maximum efforts in contests with asymmetric valuations 总被引:1,自引:0,他引:1
Efforts may be reduced when players with different valuations participate in a contest. This paper considers the problem of designing a contest to elicit maximum aggregate effort from players with asymmetric valuations. Optimal designs for different classes of contest technologies are computed and characterized. A value weighted contest is optimal in the concave case. In the unconstrained case, the optimal contest is equivalent to a first price all-pay auction with a reserve price. The optimal design discounts the effort of the high valuation player in order to induce him to compete vigorously. 相似文献
75.
Stephanie Stray 《Quality and Quantity》2009,43(1):161-171
That survey research is error prone is not a new idea and different varieties of non-sampling error have been investigated
in the literature as well as consideration being given in many statistics textbooks to the issue of sampling error. The paper
here considers research upon corporate environmental reporting. It compares information provided by corporate environmental
reports with information that survey respondents claim their organization’s environmental report contains. This enables the
accuracy of the claims to be assessed. Consideration is given to two different industries the Water industry and the Energy
industry. Errors due to inaccurate reporting by survey respondents are shown to be relatively infrequent and respondents appear
just about as likely to claim they report information that they do not, in fact, report as to fail to indicate that they report
information that is, in fact, actually reported. 相似文献
76.
This paper first examines the rapid growth and changing composition of manufactured exports in Indonesia and Thailand, highlighting the rapid growth of office and computer machinery and electric machinery, somewhat slower growth of non-electric and transportation machinery, as well as the low growth of previously large exports of textiles apparel. Second, the important contributions of foreign multinational enterprises (MNEs) to export growth in the machinery industries, particularly in electric, office, and computing machinery, are documented. Third, the paper describes trade policies in all these industries in some detail, emphasizing how low protection was a key facilitator of rapid export growth in the MNEs that dominated the electric, office, and computing machinery industry, while high protection reduced incentives to export among MNEs in the transportation machinery industry. 相似文献
77.
78.
This article specifies what an optimal pollution tax should be when dealing with a vertical Cournot oligopoly. Polluting firms
sell final goods to consumers and outsource their abatement activities to an environment industry. It is assumed that both
markets are imperfectly competitive. Thus, the tax is a single instrument used to regulate three sorts of distortions, one
negative externality and two restrictions in production. Consequently, the optimal tax rate is the result of a trade-off that
depends on the firms’ market power along the vertical structure. A detailed analysis of Cournot-Nash equilibria in both markets
is also performed. In this context, the efficiency of abatement activities plays a key-role. It gives a new understanding
to the necessary conditions for the emergence of an eco-industrial sector.
相似文献
79.
Summary Competition authorities are increasingly measuring the effects of their enforcement actions, seeking a robust justification
for the proliferation of competition policy. We highlight the importance of identifying the right counterfactual against which
to measure effects, and set out the relevant categories of costs and benefits. We then explore how a balance can be struck
between the benefits and inherent limitations of these measurement exercises. Relatively crude analyses of cartel action benefits
can be sufficient to achieve public legitimacy for competition policy. Assessing the effects of merger and conduct inquiries
is often ambiguous, but could be used to improve decision-making processes.
Director and Managing Consultant, respectively, at Oxera, Oxford and London. The valuable comments of Fod Barnes, Kerry Hughes
and an anonymous referee are gratefully acknowledged. The opinions expressed in this article are those of the authors alone. 相似文献
80.