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   43571篇
  免费   1405篇
  国内免费   532篇
财政金融   3666篇
工业经济   1989篇
计划管理   10431篇
经济学   7238篇
综合类   6879篇
运输经济   397篇
旅游经济   762篇
贸易经济   5137篇
农业经济   3392篇
经济概况   5617篇
  2024年   119篇
  2023年   525篇
  2022年   767篇
  2021年   1287篇
  2020年   1503篇
  2019年   905篇
  2018年   762篇
  2017年   870篇
  2016年   1034篇
  2015年   1231篇
  2014年   3238篇
  2013年   3541篇
  2012年   3823篇
  2011年   4698篇
  2010年   3469篇
  2009年   2866篇
  2008年   2862篇
  2007年   2401篇
  2006年   2291篇
  2005年   1697篇
  2004年   1223篇
  2003年   1061篇
  2002年   756篇
  2001年   750篇
  2000年   518篇
  1999年   307篇
  1998年   153篇
  1997年   127篇
  1996年   111篇
  1995年   84篇
  1994年   64篇
  1993年   61篇
  1992年   55篇
  1991年   46篇
  1990年   28篇
  1989年   17篇
  1988年   23篇
  1987年   4篇
  1986年   3篇
  1985年   40篇
  1984年   62篇
  1983年   44篇
  1982年   35篇
  1981年   13篇
  1980年   14篇
  1979年   11篇
  1978年   2篇
  1977年   6篇
  1973年   1篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
961.
Researchers have spent substantial effort to identify factors influencing pesticide use intensity. However, few studies have compared the relative importance of these factors. This study examines four categories of factors that potentially influence farmers’ pesticide use decisions by evaluating incentivized experiment data, farm survey data, and remote sensing data in China. Our results suggest that land diversification has the largest effect on farmers’ pesticide use. Compared with the most rice-intensive landscape type, less rice-intensive systems cause farmers to spray less on middle rice. Heavy pesticide use intensity is associated with land fragmentation as small-scale farms still dominate crop production. Farmers’ integrated pest management knowledge has significant effects on pesticide use. We also find that loss and ambiguity preferences, rather than risk preferences, are more likely to affect pesticide use intensity.  相似文献   
962.
民办高校党务干部队伍作为学校党建工作实施者,其队伍状况在很大程度上将直接影到党建工作质量和水平,进而影响到人才培养质量。目前民办高校党务干部队伍普遍存在队伍结构失衡,党务干部身兼多职,重业务知识学习,轻理论武装,重专业技能培训轻党务能力提升等状况。要改善现状,必须做到:一是加强制度建设,狠抓贯彻落实,争取上层支持;二是加强业务培训,鼓励开展党建工作研究;三是加强党建工作信息化建设,打造符合时代需求的党务干部队伍;四是引进激励措施,提高工作积极性。  相似文献   
963.
项目的价值工程方法是一种以实现项目利益相关各方最高满意度的创造性活动,在规划设计阶段,价值工程对项目价值有决定性的影响。因此,在项目前期,应积极应用价值工程的方法进行多方案的比选分析,以达到项目价值的最大化目的。  相似文献   
964.
We present a novel lens on the presence and impact of qualified foreign institutional investors (QFII) in top shareholdings of the non-financial domestically listed Chinese ‘A’ share firms. The initial results suggest that the presence of a QFII as a top shareholder in these companies is associated with their better performance, using both Tobin’s Q and ROA as the performance measures. Our models include variables representing corporate governance mechanisms, foreign legal person shares, a proxy for international affiliations and a number of time-variant firm characteristics. Economically, the coefficient of impact on the market measure is the more significant, while the effect of having a QFII in top shareholdings on both performance measures is empirically significant. Previously, studies have often ignored the potential for reverse causality beyond using lagged regressors. This is problematic. Therefore, we follow up with a 2SLS instrumental variables and system GMM model to further mitigate this potential and find the empirical relationship holds. Contrary to earlier work on QFIIs and governance post-implementation of the QFII scheme, the findings from our models suggest that the presence of a QFII top shareholder augments market performance holding equal existing corporate governance mechanisms and other controls.  相似文献   
965.
The empirical results of the risk-return relationship are mixed for both mature and merging markets. In this paper, we develop a new volatility model to revisit the risk-return relation of the aggregate stock market index by extending the Realized GARCH model of Hansen et al. (2012) with the Wang and Yang (2013) framework, in which the overall risk-return relation is decomposed into a risk premium and a volatility feedback effect. An empirical analysis of three major Chinese stock indices reveals positive risk premium and negative volatility feedback effect, and those findings are stable across different markets and sub-samples. However, their relative magnitudes differ between markets and varies through time.  相似文献   
966.
This study uses the structure–conduct–performance framework to examine the structure and efficiency of small and medium enterprises in the informal metal manufacturing sector in Zimbabwe. Small and medium enterprises provide a lifeline to the country's resource-poor farmers, whose numbers increased exponentially after the agrarian reform in 2000. The study utilises nationally representative, enterprise-level data from five major towns (Harare, Chitungwiza, Bulawayo, Mutare and Rusape) in Zimbabwe. Various performance measures are applied at the industry level to assess efficiency, profitability and competitiveness; these include the Herfindahl–Hirschman index, concentration ratios, average yearly profits and Tobin's q ratio. The results indicate that small and medium enterprises in Zimbabwe are modestly efficient, profitable and competitive. These findings highlight the need to integrate informal metal fabrication activities into Zimbabwe's national economic development plans.  相似文献   
967.
968.
预算公开与廉洁政府建设是学术界关注的热门话题,两者之间的关系更是其中的重点。2006、2008、2010与2012四个年度共同涉及的44个国家的预算公开指数与清廉指数的相关性检测表明,预算公开指数与清廉指数之间呈正相关关系,且基本属于高度相关,部分国家数据的不对称只是虚假背离。高度契合与虚假背离的背后起决定性作用的是成熟的民主政治,因此,预算公开推动廉洁政府建设需要以成熟的民主政治为前提和基石。  相似文献   
969.
国企集团的整体上市是深化国企改革的重大举措,也给国企监管带来了巨大的机遇和挑战。针对国企集团整体上市所带来的国企监管的新变化、新任务,应从全面把握变化、客观分析原因入手,采取各种有效的应对措施,加强和完善对国有企业的监督和管理。  相似文献   
970.
The purpose of this study is to investigate the relationship between investors’ satisfaction and intention and word-of-mouth communication. This study contributes to the ongoing debate on the relationship between investor behavior and word-of-mouth communication. Many studies are related to investors’ participation and individual investors’ asset allocation decisions that are instigated by their social community via word-of-mouth communication whereas this study directly investigates the relationship between investment satisfaction and intention and word-of-mouth communication. We emphasize how many factors are considered when making satisfactory investment decisions. Our results confirm the strong relationship between the satisfaction and intention of investors and word-of-mouth communication. This finding may be useful to regulators, investors and managers who seek to establish effective rules for stock holdings and trade.  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