全文获取类型
收费全文 | 17668篇 |
免费 | 411篇 |
国内免费 | 68篇 |
专业分类
财政金融 | 2718篇 |
工业经济 | 1139篇 |
计划管理 | 3375篇 |
经济学 | 3560篇 |
综合类 | 752篇 |
运输经济 | 146篇 |
旅游经济 | 215篇 |
贸易经济 | 2578篇 |
农业经济 | 1025篇 |
经济概况 | 2590篇 |
信息产业经济 | 1篇 |
邮电经济 | 48篇 |
出版年
2022年 | 129篇 |
2021年 | 216篇 |
2020年 | 242篇 |
2019年 | 244篇 |
2018年 | 315篇 |
2017年 | 357篇 |
2016年 | 330篇 |
2015年 | 340篇 |
2014年 | 498篇 |
2013年 | 1392篇 |
2012年 | 818篇 |
2011年 | 928篇 |
2010年 | 816篇 |
2009年 | 747篇 |
2008年 | 830篇 |
2007年 | 655篇 |
2006年 | 689篇 |
2005年 | 579篇 |
2004年 | 380篇 |
2003年 | 359篇 |
2002年 | 320篇 |
2001年 | 283篇 |
2000年 | 283篇 |
1999年 | 232篇 |
1998年 | 213篇 |
1997年 | 192篇 |
1996年 | 210篇 |
1995年 | 186篇 |
1994年 | 196篇 |
1993年 | 193篇 |
1992年 | 213篇 |
1991年 | 209篇 |
1990年 | 208篇 |
1989年 | 181篇 |
1988年 | 146篇 |
1987年 | 152篇 |
1986年 | 170篇 |
1985年 | 248篇 |
1984年 | 227篇 |
1983年 | 194篇 |
1982年 | 199篇 |
1981年 | 199篇 |
1980年 | 188篇 |
1979年 | 188篇 |
1978年 | 166篇 |
1977年 | 153篇 |
1976年 | 148篇 |
1975年 | 150篇 |
1974年 | 117篇 |
1973年 | 114篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
创新要素配置在投入产出两个环节中生成大量不完全技术信息,投入产出效率随机变动更加明显。从投入产出数据集合中提炼共同因子,与不可观测变量构成预测器,建立因子增广向量自回归模型(FAVAR),分析随机变动方差构成,测度投入产出效率随机变动程度。随机变动效应包括水平效应、稳定性效应和规模效应。投入产出效率自回归扰动项表示随机变动程度,将其细分为共同因子,计算预测器方差及其与投入产出效率的协方差。基于669家上市公司月度、季度、半年度和年度技术研发数据,比较分析投入产出效率随机变动程度及形成原因,引入脉冲响应法分析变量方差构成与变动特征,提出相关政策建议。 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.
Environmental Policy,Sustainable Development,Governance Mechanisms and Environmental Performance
下载免费PDF全文
![点击此处可从《Business Strategy and the Environment》网站下载免费的PDF全文](/ch/ext_images/free.gif)
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
5.
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
6.
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
7.
以市场营销学课程为例,探索构建应用型本科高校线上教学的质量评价体系,有助于推动线上教学高效提质发展。通过综合15位市场营销教学领域专家教授的评价意见,结合市场营销学课程线上教学基本要求,运用层次分析法,设计出市场营销学线上教学质量评价指标体系。该评价体系兼顾师资队伍、教学理念、教学方法、教学目标、教学过程、教学资源、教学活动、教学评价与反馈等标准,对应用型本科高校线上教学活动的开展和质量把控提供一定的借鉴价值。 相似文献
8.
Daniel Bens Sterling Huang Liang Tan Wan Wongsunwai 《Contemporary Accounting Research》2020,37(4):2472-2500
We exploit an influential 1991 Delaware court ruling to examine simultaneously two types of conservatism that play important roles in resolving creditor–owner agency conflicts: contracting conservatism and reporting conservatism. The ruling expanded managerial fiduciary duties in favor of creditors for Delaware-incorporated firms in the vicinity of insolvency. In those firms, following the ruling, debt contracts are less likely to include conservative adjustments to accounting numbers used for covenant compliance (i.e., contracting conservatism decreases), while public financial reporting becomes more conservative (i.e., reporting conservatism increases). The decrease in contracting conservatism is concentrated in firms that exhibit a greater increase in reporting conservatism, suggesting that reporting conservatism is more cost-effective in resolving agency conflicts. In addition, the substitution effect is more pronounced in firms facing greater business uncertainty and firms with greater board independence. 相似文献
9.
10.
Christensen Theodore E. Pei Hang Pierce Spencer R. Tan Liang 《Review of Accounting Studies》2019,24(2):629-664
Review of Accounting Studies - We investigate whether firms change their non-GAAP reporting practices after debt covenant violations. We find that the likelihood that a firm will disclose non-GAAP... 相似文献