全文获取类型
收费全文 | 15148篇 |
免费 | 366篇 |
专业分类
财政金融 | 2568篇 |
工业经济 | 978篇 |
计划管理 | 2519篇 |
经济学 | 3200篇 |
综合类 | 109篇 |
运输经济 | 91篇 |
旅游经济 | 182篇 |
贸易经济 | 2805篇 |
农业经济 | 753篇 |
经济概况 | 2065篇 |
信息产业经济 | 1篇 |
邮电经济 | 243篇 |
出版年
2021年 | 111篇 |
2020年 | 161篇 |
2019年 | 232篇 |
2018年 | 420篇 |
2017年 | 385篇 |
2016年 | 388篇 |
2015年 | 259篇 |
2014年 | 400篇 |
2013年 | 1455篇 |
2012年 | 462篇 |
2011年 | 474篇 |
2010年 | 453篇 |
2009年 | 478篇 |
2008年 | 456篇 |
2007年 | 385篇 |
2006年 | 339篇 |
2005年 | 300篇 |
2004年 | 292篇 |
2003年 | 292篇 |
2002年 | 313篇 |
2001年 | 261篇 |
2000年 | 299篇 |
1999年 | 245篇 |
1998年 | 234篇 |
1997年 | 201篇 |
1996年 | 218篇 |
1995年 | 195篇 |
1994年 | 214篇 |
1993年 | 206篇 |
1992年 | 218篇 |
1991年 | 225篇 |
1990年 | 223篇 |
1989年 | 196篇 |
1988年 | 152篇 |
1987年 | 161篇 |
1986年 | 182篇 |
1985年 | 264篇 |
1984年 | 237篇 |
1983年 | 214篇 |
1982年 | 219篇 |
1981年 | 217篇 |
1980年 | 198篇 |
1979年 | 203篇 |
1978年 | 175篇 |
1977年 | 162篇 |
1976年 | 166篇 |
1975年 | 163篇 |
1974年 | 129篇 |
1973年 | 121篇 |
1972年 | 114篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
In this paper we explore the micro-level determinants of conformity. Members of the social networking service Facebook express positive support to content on the website by clicking a Like button. We set up a natural field experiment to test whether users are more prone to support content if someone else has done so before. To find out to what extent conformity depends on group size and social ties we use three different treatment conditions: (1) one stranger has Liked the content, (2) three strangers have Liked the content, and (3) a friend has Liked the content. The results show that one Like from a single stranger had no impact. However, increasing the size of the influencing group doubled the probability that subjects expressed positive support. Friendship ties were also decisive. People were, on average, four times more likely to press the Like button if a friend, rather than a stranger, had done so before them. The existence of threshold effects in our experiment clearly shows that both group size and social proximity matters when opinions are shaped. 相似文献
2.
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
3.
Stephen G. Dimmock William C. Gerken Zoran Ivković Scott J. Weisbenner 《Journal of Financial Economics》2018,127(1):113-135
Differences in accrued gains and investors’ tax-sensitivity induce variation in a capital gains lock-in effect across mutual funds even for the same stock at the same time. Exploiting this variation, we show this effect influences funds’ governance decisions: higher capital gains decrease the likelihood a fund exits prior to contentious votes and increase the likelihood a fund votes against management. Consistent with tax motivation, these findings are concentrated among funds with tax-sensitive investors. Further, high aggregate capital gains across funds holding a stock predict a higher likelihood management loses a vote and a lower likelihood a contentious vote is proposed. 相似文献
4.
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
5.
6.
Environmental Policy,Sustainable Development,Governance Mechanisms and Environmental Performance 下载免费PDF全文
We investigate the effects of environmental policy (Climate Change Act – CCA), sustainable development frameworks (Global Reporting Initiative – GRI; UN Global Compact – UNGC) and corporate governance (CG) mechanisms on environmental performance (carbon reduction initiatives – CRIs; actual carbon performance – GHG emissions) of UK listed firms. We use the generalized method of moments (GMM) estimation technique to analyse data consisting of 2245 UK firm‐year observations over the 2002–2014 period. First, we find that the CCA has a positive effect on CRIs, and this effect is stronger in better‐governed firms. Second, we find that the GRI‐based framework is positively associated with CRIs. Third, we find that firms with poor CG structures have lower actual carbon performance compared with their better‐governed counterparts. Overall, our evidence suggests that firms can symbolically conform to environmental policy (CCA) and sustainable development frameworks (GRI, UNGC) by engaging in CRIs without necessarily improving actual environmental performance (GHG emissions) substantively. Copyright © 2017 John Wiley & Sons, Ltd and ERP Environment 相似文献
7.
Stefan Kurpjuweit Christoph G. Schmidt Maximilian Klckner Stephan M. Wagner 《Journal of Business Logistics》2021,42(1):46-70
Additive manufacturing (AM) appears to be a particularly attractive use case for blockchain. This research combines inductive in‐depth interviews with the Delphi method to explore what potentials blockchain technology in AM creates, which adoption barriers firms need to overcome, and how supply chains will be affected by the integration of these two potentially disruptive technologies. The results suggest opportunities that are related to intellectual property (IP) rights management, the monitoring of printed parts throughout their lifecycle, process improvements, and data security. The most important barriers for blockchain adoption in AM are an absence of blockchain‐skilled specialists on the labor market, missing governance mechanisms, and a lack of firm‐internal technical expertise. By addressing important limitations of AM, blockchain is expected to improve the competitiveness of AM in parts’ production, catalyzing the trend toward more decentralized manufacturing resulting in more agile, resilient, and flexible supply chains and reduced logistics costs. Beyond that, blockchain‐based AM platforms are expected to enhance supply chain visibility, drive supply chain digitalization, support supply chain finance, and contribute to the emergence of shared factory systems. 相似文献
8.
State-owned enterprises (SOEs) are commonly associated with undue advantages due to preferential treatment by the state. Simultaneously they are often quoted as handicapped given the notorious state interference, management problems and agency tensions. They used to be regarded as a mainly domestic issue but in the context of globalisation and the fact that states enter treaties with new obligations, SOEs’ performance ceased to be solely a domestic problem, increasingly so as state-owned multinational enterprises (SOMNEs) emerge. This article presents the results of research on Polish SOEs’ outward foreign direct investment (OFDI). It offers an overview of overseas activities of nine major Polish firms with a state stake and aims to contribute to the conceptual literature on foreign investments conducted by SOMNEs. We distinguish between FDI by SOMNEs as specific – privileged (facilitated) or discriminated (hampered) – investments subject to the home country’s state power and the host country’s state perception. 相似文献
9.
10.