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   10149篇
  免费   506篇
  国内免费   118篇
财政金融   711篇
工业经济   903篇
计划管理   4589篇
经济学   933篇
综合类   1179篇
运输经济   56篇
旅游经济   56篇
贸易经济   1073篇
农业经济   505篇
经济概况   768篇
  2024年   9篇
  2023年   124篇
  2022年   160篇
  2021年   266篇
  2020年   234篇
  2019年   126篇
  2018年   137篇
  2017年   141篇
  2016年   176篇
  2015年   349篇
  2014年   906篇
  2013年   691篇
  2012年   1008篇
  2011年   1371篇
  2010年   1090篇
  2009年   592篇
  2008年   683篇
  2007年   597篇
  2006年   537篇
  2005年   427篇
  2004年   317篇
  2003年   221篇
  2002年   145篇
  2001年   114篇
  2000年   84篇
  1999年   71篇
  1998年   38篇
  1997年   38篇
  1996年   20篇
  1995年   12篇
  1994年   17篇
  1993年   15篇
  1992年   12篇
  1991年   13篇
  1990年   7篇
  1989年   6篇
  1988年   2篇
  1987年   1篇
  1985年   5篇
  1984年   2篇
  1983年   4篇
  1982年   3篇
  1981年   1篇
  1980年   1篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
With advances in new technology, various formats of online advertising (e.g., in-stream video advertising) often force e-consumers to watch the advertisement during their goal-oriented activities, and this advertising interruption often makes them feel intruded upon and irritated. To reduce such negative reactions toward involuntary advertising exposures, this study examines whether offering e-consumers the option to choose advertising content can influence ad effectiveness in different degrees of forced exposure circumstance. Using a 2 (advertising content control: customization option vs. no option) × 2 (level of forced exposure: pre-rolls vs. rich media banners) factorial experiment, the researcher noted that advertising customization features generate a greater sense of relevance and increased advertising memory, which in turn may lead to more positive attitudes toward the ad regardless of the levels of forced exposure. The findings have theoretical and practical implications on the use of involuntary advertising interruptions in the web interface.  相似文献   
2.
In this paper, we consider the problem of optimal investment by an insurer. The wealth of the insurer is described by a Cramér–Lundberg process. The insurer invests in a market consisting of a bank account and m risky assets. The mean returns and volatilities of the risky assets depend linearly on economic factors that are formulated as the solutions of linear stochastic differential equations. Moreover, the insurer preferences are exponential. With this setting, a Hamilton–Jacobi–Bellman equation that is derived via a dynamic programming approach has an explicit solution found by solving the matrix Riccati equation. Hence, the optimal strategy can be constructed explicitly. Finally, we present some numerical results related to the value function and the ruin probability using the optimal strategy.  相似文献   
3.
Facebook has become an important platform for a brand–consumer relationship channel. The current study investigates the influence of perceived socialness and its effect on consumers’ attitude toward brands. Participants (N = 404) were recruited in a large southeast university. A 2 (socialness: high vs. low)?×?2 (feedback control: high vs. low)?×?2 (brand image: high vs. low) between-subject design was conducted. The results of this study identified three important findings. First, high (vs. low) socialness elicited higher perceived relationship commitment, brand trust, and more favorable brand attitude. Second, the effect of socialness on brand attitude was moderated by brand image (positive vs. negative). Third, the mediation analysis showed that the effect of socialness (high vs. low) on brand attitude was fully mediated by perceived relationship commitment and brand trust.  相似文献   
4.
为了解决宏蜂窝与飞蜂窝构成的两层异构网络上行干扰与资源分配问题,提出了一种在认知型飞蜂窝的双层异构网中结合子信道分配和功率控制进行资源分配的框架。通过对异构网中跨层干扰问题进行分析与建模,将求解最优子信道分配矩阵和用户发射功率矩阵作为干扰管理问题的解决方法。模型中认知型飞蜂窝网络子信道和飞蜂窝网络用户构成非合作博弈,双方利用效用函数最优值进行匹配,构成初始信道分配矩阵;再由接入控制器根据接入条件从初始信道分配矩阵中筛选用户,并优化接入用户的发射功率矩阵,得到最优子信道分配矩阵和功率矩阵。仿真结果表明,优化框架提高了双层异构网络中飞蜂窝网络用户的吞吐量和接入率,降低了异构网中跨层干扰。  相似文献   
5.
Post-Keynesian institutionalist economists like Wallace Peterson and John Kenneth Galbraith recognized that the impact of uncertainty on economic wellbeing depends in part on the degree of control people have over the sources and consequences of it. Given the inability of government and other large institutions to reduce uncertainty or to provide citizens with the ability to manage it, mediating structures are considered as an alternative means of promoting economic security. The article concludes by describing and evaluating several of these alternatives.  相似文献   
6.
新结构经济学中有为政府实际上对应了一种裁判型国家。裁判型国家根本上把国家视为服务于所有成员的公共性社会机构,从而具有善的性质;正是为了发挥善的行为,人们往往赋予这种国家及其政府相当大的权力。但在现实世界中,那些掌握公权力的代理人往往会为了个人目标和利益而滥用组织手段,从而导致裁判型国家及其政府的功能发生蜕变。从这个意义上说,任何承担积极功能的有为政府都不能是无限政府,而必须在一套相对成熟和完善的规范和监督体系下运作。  相似文献   
7.
Factors affecting subjective well-being and their gross effect measurement have been widely studied. However, how people derive utility from these factors has not been fully explored. This article provides a way to decompose the gross effect of major determinants on life satisfaction into direct and indirect effects and make inference for the latter. Because the indirect effect is nonlinear in parameters associated with different models in an equation system, it creates a problem in estimating the standard error. Besides, the categorical nature in survey data further introduces bias to the covariance estimation even asymptotically. To address these issues without knowing the form of heteroskedasticity under the null hypothesis, we propose to extend the wild bootstrap procedure in this particular context. Its robustness against various data properties is validated via several simulation experiments. Using three recent waves of World Values Survey, we find that the relative importance of life control has significantly increased recently, and endowing citizens with the right to enjoy their freedoms and liberties is a more effective policy in raising life satisfaction than promoting national income.  相似文献   
8.
Annual reports are the main sources of information for outside investors’ investment decisions and enable shareholders to supervise the management. Difficulties with the readability of these reports may therefore have serious consequences. Using 19,221 firm-year observations of Chinese A-share listed firms from 2001 to 2015, we investigate the association between annual report readability and corporate agency costs, where readability is proxied by report file length and/or file size. We find that firms with better annual report readability experience lower agency costs, and the negative association between readability and agency costs is more pronounced in firms with higher external audit quality, internal control quality or analyst coverage. These results hold after several robustness checks. The positive effect of annual report readability is stronger in private firms than in state-owned enterprises, and becomes stronger after the implementation of new accounting standards in 2007. Readable annual reports can help in monitoring corporate insiders’ opportunistic behavior and thus reduce agency costs.  相似文献   
9.
孙斌  王亮文 《科技和产业》2019,19(12):54-58
通过回顾国内外城市群产业协调发展的文献,梳理城市群产业协调发展的相关概念内涵,总结协调发展的研究内容和调控措施,发现城市群产业协调发展概念缺乏明确的界定,理论发展滞后于新形势下不断丰富的协调内容。提出未来需继续构建并完善城市群产业协调发展理论体系,拓展城市群产业协调发展评价指标体系。  相似文献   
10.
Literature shows that female (male) managers are more likely to adopt a transformational (transactional) leadership style, as well as make greater (lesser) use of information for decision-making. We draw on this research to investigate whether gender is related to a manager's use of management control systems (MCS) and performance measures. We surveyed the head of school of all schools across all Australian public universities. Our results indicate that females use MCS in an interactive manner to a greater extent than their male counterparts and make greater use of non-financial performance measures. We conclude with contributions to theory and practice.  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