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   4195篇
  免费   135篇
  国内免费   96篇
财政金融   248篇
工业经济   144篇
计划管理   913篇
经济学   607篇
综合类   570篇
运输经济   39篇
旅游经济   118篇
贸易经济   571篇
农业经济   616篇
经济概况   600篇
  2024年   32篇
  2023年   86篇
  2022年   114篇
  2021年   164篇
  2020年   171篇
  2019年   119篇
  2018年   95篇
  2017年   105篇
  2016年   137篇
  2015年   159篇
  2014年   350篇
  2013年   364篇
  2012年   371篇
  2011年   442篇
  2010年   324篇
  2009年   290篇
  2008年   261篇
  2007年   234篇
  2006年   204篇
  2005年   111篇
  2004年   80篇
  2003年   70篇
  2002年   37篇
  2001年   35篇
  2000年   26篇
  1999年   13篇
  1998年   4篇
  1997年   8篇
  1996年   4篇
  1995年   4篇
  1994年   1篇
  1993年   2篇
  1992年   3篇
  1991年   1篇
  1989年   2篇
  1983年   1篇
  1981年   2篇
排序方式: 共有4426条查询结果,搜索用时 531 毫秒
981.
This paper develops a factor analysis–based measure for shifts in corporate financial flexibility (FFLEX) that can be observed from public accounting information. Companies that experience positive shifts in FFLEX are associated with higher future investment growth opportunities. We show that FFLEX is a robust determinant of future stock returns. Firms that have increased their financial flexibility are associated with lower stock returns in the subsequent period. A zero‐cost return portfolio produces a significant positive monthly premium of 0.69%, which is driven by covariance (risk). Risk inherent in the flexibility factor is not explained away by either prominent pricing characteristics or factors.  相似文献   
982.
从个人信任倾向、感知网站因素、结构保障以及个人动机4个方面探讨众包参与者初始信任的影响因素.实证分析结果显示:感知风险、感知网站易用性、信任立场、感知第三方保障与初始信任之间具有非常显著的关系;潜在收益、感知网站声誉、感知网站规模与初始信任具有较强的显著性;感知网站声誉、感知网站规模与可靠性无关;对人性的信心、感知法律与技术保障对信任信念维度中的可靠性和善意均无显著性;对人性的信心、信任立场与感知第三方保障、感知法律与技术保障具有非常显著的关系.  相似文献   
983.
Using an experiment, we test the relation between personality traits and revealed risk and ambiguity preferences, and we consider the effects of personality traits prevalence in a group on the decision making of each group member. In the experiment, subjects reveal their risk and ambiguity preferences through lottery choices. They then participate in an unstructured group chat. Afterwards, they are given the chance to revise their initial lottery choices. Results show that personality traits affect ambiguity but not risk preferences before the chat. Specifically, agreeableness is negatively related to ambiguity aversion. We also show that the probability of changing decisions after the chat is affected by the individual's personality traits but not by the traits of the other group members. The latter only affects the direction and the degree of the change.  相似文献   
984.
《Economic Systems》2020,44(1):100739
This study examines the nonlinear relationship between Islamic banking development, major macroeconomic variables and economic growth in Islamic countries. Using the panel smooth transition model, the results show a positive nonlinear relationship between Islamic banking development and economic growth. Moreover, the relationship between the macroeconomic variables and economic growth is asymmetric and regime-dependent. Further, by using the dynamic panel quantile model, we show that for many cases the Islamic banking variables lead economic growth across the quantiles. More specifically, foreign direct investment, oil production and inflation have a positive impact on economic growth during the normal financial development state, while government consumption, one-lag economic growth, terms of trade and financial development have a negative impact on economic growth for this state. The human capital index, education and the rule of law have an insignificant impact, regardless of the prevailing regime. The results for the separated oil-importing and oil-exporting economies are generally consistent with the combined sample regarding the Islamic banking development variables. As for the macro variables, they have a positive and significant (insignificant) effect on EG for the oil-importing (oil-exporting) economies for almost all models.  相似文献   
985.
企业的成本结构会影响企业通过经营实现利润的能力。企业进行成本结构决策时需要综合考虑各种经营和环境因素,其中客户和供应商集中度对于企业来说是一个关键的环境因素,但现有文献很少研究供应链集中度和公司成本结构之间的潜在关系。利用2012至2016年中国制造业上市公司的成本数据,发现制造商的客户集中度和其成本弹性之间存在正相关关系,并且随着客户议价能力提升,客户集中度高的公司的成本结构灵活性被削弱;随着供应商的集中,下游制造商的变动成本比上固定成本的比值在下降,成本刚性在加强。随着供应商行业议价能力提升,供应商集中度和下游客户成本刚性结构之间的正面关系被削弱。供应链集中度和议价能力是企业成本结构决策的决定因素。  相似文献   
986.
以大同煤田同忻矿为研究对象,以矿井基础地质资料为基础,共采集62口钻井共214个瓦斯气样,以实验测试为手段,以理论分析为方法,得出了瓦斯气样成分特征;划分了各个煤层的瓦斯带类型;分析了断裂、褶皱、陷落柱、埋深、岩浆侵入、煤化程度等因素对瓦斯赋存的影响;探究了各因素的影响机理;并预测了瓦斯突出危险性。结果显示:瓦斯成分以N2、CH4和CO2为主,山4#煤为N2-CH4带和N2带,2#煤层中包括N2-CH4带和N2带,3-5#煤层中包括N2-CH4带、N2带和CO2-N2带,8#煤层中包括N2-CH4带和N2带,9#煤层中包括N2-CH4带和N2带,将矿井鉴定为高瓦斯矿井;研究区断裂性质多为正断层,利于瓦斯气体的垂向运移和散失;向斜轴部、背斜鞍部、鼻状构造的倾斜端及“S”型背斜转折端等构造部位易于瓦斯的富集保存;封闭性陷落柱为瓦斯赋存提供储集空间,而与导水裂隙带联通的陷落柱则有助于瓦斯气体的散失;瓦斯含量与煤层埋深呈正相关关系,与岩浆侵入区煤样挥发分呈明显负相关关系,而无岩浆岩区,挥发分与瓦斯含量无明显相关性,煤层埋深越大,突出危险性越高;瓦斯突出危险性预测结果显示研究区突出危险性较小。  相似文献   
987.
Business-to-business companies often differentiate themselves from competitors by complementing goods with services. While extant literature on servitization points to substantial benefits for companies and underscores the importance of the sales force for successful servitization, it has rarely empirically investigated the negative effects of and barriers to effective selling of servitized offerings at the salesperson level. Drawing on transaction cost theory, we propose that with rising service shares, the specificity of offers and transaction costs grow, partially offsetting the financial benefits. We derive four salesperson factors that moderate the effect of salespeople’s industrial service share on salespeople’s profit. These factors pertain to the extent to which salespeople individualize offers and effectively manage offers’ specificity (adaptiveness, customer valuation skills, experience). We test our conceptualization with data from 220 salespeople and company records. The results are robust to endogeneity and show that service share has a diminishing positive effect on salesperson profit. While salespersons’ offer individualization enforces this harmful effect, salesperson adaptiveness and customer valuation skills show beneficial moderating effects. This study provides valuable insights for researchers and managers into the role of the sales force in servitization and into salesperson factors conducive to realizing the full profit potential of servitized offerings.  相似文献   
988.
论文主要对公路工程项目中机械设备使用效率的影响因素及应对策略进行研究,以供相关专业人士进行参考和借鉴。  相似文献   
989.
Using the data of 47 single-country exchange-traded funds (ETFs) traded in the U.S. from 36 countries during 2004–2017, this research examines the impact of investor attention proxied by Google Search Volume Index and home country-specific factors on different quantile of their returns. Evidence first shows that compared with U.S. investor attention, home country investor attention largely correlates with low to medium ETF returns, supporting the attention-induced price pressure hypothesis. Second, home country-specific factors significantly affect ETF returns at different conditional quantiles. We also find that investors prefer investing in a country with strong similarity to that of the U.S., supporting the cross-country information asymmetry hypothesis. Third, an intervening effect of home country-specific factors exists on the relationship between U.S. investor attention and ETF returns. These findings should help government authorities find appropriate strategies to attract foreign investment and upgrade the value of their capital market as well as provide a reference on efficiency for equity investors.  相似文献   
990.
中国作为全球最大货物贸易国和最大外汇储备国,许多跨国公司纷纷来华投资。虽然受疫情的影响,在世界经济出现严重衰退和部分地区出现暂时停摆现象,但在华投资势头强劲,总额占世界首位。区位选择与对外直接投资之间存在着不可分离的关系,是跨国公司在海外投资时必须考虑的重要环节。良好地利用外资可以促进我国在经济上的国际交流,拉动区域经济增长和协调发展,所以研究跨国公司在中国选址时的参考因素具有实质意义。  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