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:      
  示例: 沙坡头地区,人工植被区,变化  检索词用空格隔开表示必须包含全部检索词,用“,”隔开表示只需满足任一检索词即可!
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   26156篇
  免费   1776篇
  国内免费   74篇
财政金融   3692篇
工业经济   990篇
计划管理   4364篇
经济学   5101篇
综合类   4708篇
运输经济   123篇
旅游经济   238篇
贸易经济   3370篇
农业经济   1279篇
经济概况   4141篇
  2025年   43篇
  2024年   384篇
  2023年   511篇
  2022年   514篇
  2021年   739篇
  2020年   969篇
  2019年   703篇
  2018年   509篇
  2017年   628篇
  2016年   671篇
  2015年   731篇
  2014年   1492篇
  2013年   1765篇
  2012年   2014篇
  2011年   2502篇
  2010年   1893篇
  2009年   1724篇
  2008年   2026篇
  2007年   1863篇
  2006年   1714篇
  2005年   1299篇
  2004年   951篇
  2003年   657篇
  2002年   457篇
  2001年   410篇
  2000年   248篇
  1999年   157篇
  1998年   75篇
  1997年   62篇
  1996年   52篇
  1995年   56篇
  1994年   25篇
  1993年   30篇
  1992年   14篇
  1991年   7篇
  1990年   5篇
  1989年   4篇
  1988年   2篇
  1987年   1篇
  1985年   15篇
  1984年   25篇
  1983年   17篇
  1982年   18篇
  1981年   7篇
  1980年   5篇
  1979年   3篇
  1978年   3篇
  1977年   5篇
  1973年   1篇
排序方式: 共有10000条查询结果,搜索用时 338 毫秒
151.
    
This study of 232 college students was framed by Ajzen and Fishbein's theory of reasoned action and examined factors that motivate and influence college students' clothing disposal behaviours. Using survey questionnaires, we investigated four different clothing disposal options (resale, donation, reusing and discarding) and examined five motivational factors (environmental, economic, charity and convenience concerns and information unavailability). The influences of attitudes towards the environment and subjective norms of family and friends on clothing disposal behaviours also were examined. Results indicated that resale and donation behaviours were explained by environmental concerns and that reuse and resale behaviours were explained by economic concerns. Charity concerns motivated donation behaviours and convenience motivated discarding behaviours. Further, findings indicated that family subjective norms influenced environmentally motivated resale and donation behaviours.  相似文献   
152.
    
ABSTRACT

The analysis of corruption in international business is a relatively new phenomenon, and for the past two decades, many studies have attempted to capture the economic impact of the corruption in a country. However, most of these studies have concentrated their analysis to the experiences of the developed countries. None or very few of the current works have addressed the corruption issue in the context of foreign direct investment and economic growth in the developing countries. This work examines theoretically, as well as empirically, the incidence of corruption in the context of foreign direct investment in the developing countries, especially several African countries that signed a treaty to reduce the incidence of corruption in their respective countries.  相似文献   
153.
    
ABSTRACT

The primary focus of this introductory article is to provide a synoptic peek into the challenges and opportunities facing the countries of Africa in today's global economy and in their attempts to develop their national economies to achieve what is commonly termed the Millennium Development Goals. While foreign direct investment (FDI) is seen as a way to attain these goals, FDI flows to African countries remain extremely low. If Africa is to attract diversified FDI inflows, not just those focused on extractive/natural resources, African countries need to develop a system of management that is effective and efficient, internationally oriented and nationally focused, culturally inclusive and institutionally supportive and reliable, and one that promotes business growth and economic development with a sense of social responsibility.  相似文献   
154.
Abstract

The relationship between FDI and corruption/institutional quality in host countries has been widely analyzed. However, the use of distinct samples and indicators for corruption tends to hinder the interpretation and outcomes of econometric assessments. The aims of this paper are to assess the extent to which the use of distinct proxies for corruption provides diverse evidence regarding the relationship between corruption and FDI, and to assess whether controlling for other indicators of institutional quality reinforces the effect of corruption indicators on FDI inflows. In order to accomplish these goals, we estimate a set of multivariate logistic models using 96 countries over the period 2000 to 2010. The results evidence that using distinct proxies for corruption variables, as well as controlling for other types of the countries’ institutional quality, generate distinct outcomes. In isolation, a country’s transparency and its citizens’ corruption perceptions fail to impact on FDI whereas a bribe-free environment is conducive to FDI inflows. When we control for the human, social and economic development of the countries, the impact of a transparent and bribe-free context on FDI attraction is enhanced. Overall, it is clear that in order to become a large recipient of FDI a country has to guarantee a transparent and bribe-free environment, characterized by low income taxes, high literacy rates and generalized economic freedom (own labor and property control by citizens).  相似文献   
155.
通过建立证券投资组合损失率概率评价模型,定义损失率概率为单个资产或投资组合的损失率超过市场平均损失率的概率,用于对投资组合的风险进行评价。以某基金为例,计算得到该基金的损失率概率为39.74%,表明该基金有39.74%的概率损失率超过市场平均损失率。以证券投资组合损失率概率最小为目标函数,采用遗传算法进行求解,得出该基金投资组合损失率概率最小时的投资权重系数,最小损失率概率为36.01%,与该基金公司的投资组合相比,损失率概率降低了3.73%,实例证明该模型是降低证券投资组合风险的一种实用方法。  相似文献   
156.
管理者过度自信,融资偏好与公司投资   总被引:4,自引:0,他引:4  
江伟 《财贸研究》2010,21(1):130-138
通过公司投资与现金流之间的敏感度具体考察管理者的过度自信行为对我国上市公司内部或者外部融资偏好行为的影响,结果表明:总经理的年龄越大,任职时间越长,学历越高,以及当总经理拥有理工类教育背景时,总经理的过度自信行为越弱,因此,总经理更多地利用外部融资而不是内部融资,从而公司投资与现金流之间的敏感度越弱;而当总经理拥有经管类教育背景时,总经理的过度自信行为越强,因此,总经理更少地利用外部融资,从而公司投资与现金流之间的敏感度越强。  相似文献   
157.
    
The EU Savings Directive has been celebrated as a major political breakthrough in coordinating taxation in Europe. Against this background, the present paper evaluates the real‐world effects of this directive. The directive has left a loophole by providing grandfathering (exemption from withholding tax) for some securities. In this paper, we compare the pre‐tax returns of exempt bonds and comparable taxable bonds. If working around the Savings Directive is difficult for income tax evaders in Europe, then investors should be willing to pay a premium for bonds that are exempt from the withholding rate. Conversely, if such a premium is absent, then this suggests that the supply of existing loopholes (exempt bonds included) is large enough to allow tax evaders to continue evasion at no additional cost. The findings of our study are in line with this latter interpretation.  相似文献   
158.
    
Did taxation play any role in precipitating the financial crisis? Are there lessons to be drawn for future tax reform priorities? This paper reviews the main channels by which tax effects might have been felt and which may require forceful attention. These include in particular the large tax biases favouring debt finance and, in some countries, investment in housing. The complexities of national tax codes, and the international interaction between them, have, moreover, encouraged the use of complicated financial instruments and international tax planning, reducing transparency. Tax distortions did not cause the crisis – in the sense that there are no obvious tax changes likely to have triggered it – but they may well have contributed by leading to higher leverage and more complexity than would otherwise have been the case. Most of these distortions have long been a source of concern, but dealing with them may be more important than previously supposed.  相似文献   
159.
    
This study seeks to disentangle the effects of size, book‐to‐market and momentum on returns. Initial results show that each characteristic has a role in explaining returns, but that there is interaction between size and momentum, as well as between size and book‐to‐market. Three key findings emerge. First, the size premium is the strongest, particularly in the loser portfolios. Second, the value premium is generally limited to the smallest portfolios. Third, the momentum premium is evident for the large‐ and middle‐sized portfolios, but loser stocks significantly outperform winner stocks in the smallest size portfolio. When these interactions are controlled with multivariate regression, we find a significant negative average relation between size and returns, a significant positive average relation between book‐to‐market and returns, and a significant positive average relation between momentum and returns.  相似文献   
160.
张孝岩  沈中华 《投资研究》2011,(10):112-122
本文利用沪深300股指期货的高频数据,研究了股指期货推出对中国股票市场波动性的影响。结果表明:在股指期货合约交割日,总体上不存在到期日效应;在中长期,股指期货推出则确实增加了现货市场的波动,但随着时间的推移,这种影响在减小。另外,股指期货对现货市场波动起到引导作用,其冲击持续的时间更长、强度更大。本文政策含义在于,随着时间的推移,股指期货开始平稳有效运行,对现货市场起到重要引导和价格发现的作用,但由于股指期货的高投机性,加强对其监管仍然十分必要。  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