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   3438篇
  免费   116篇
  国内免费   60篇
财政金融   232篇
工业经济   112篇
计划管理   809篇
经济学   499篇
综合类   942篇
运输经济   11篇
旅游经济   22篇
贸易经济   298篇
农业经济   212篇
经济概况   477篇
  2024年   4篇
  2023年   28篇
  2022年   26篇
  2021年   48篇
  2020年   47篇
  2019年   32篇
  2018年   23篇
  2017年   32篇
  2016年   34篇
  2015年   106篇
  2014年   210篇
  2013年   212篇
  2012年   291篇
  2011年   403篇
  2010年   379篇
  2009年   271篇
  2008年   255篇
  2007年   257篇
  2006年   264篇
  2005年   198篇
  2004年   122篇
  2003年   118篇
  2002年   78篇
  2001年   59篇
  2000年   49篇
  1999年   22篇
  1998年   14篇
  1997年   13篇
  1996年   5篇
  1995年   7篇
  1994年   1篇
  1993年   2篇
  1992年   1篇
  1991年   1篇
  1988年   1篇
  1983年   1篇
排序方式: 共有3614条查询结果,搜索用时 15 毫秒
1.
Consumers often base their judgments on a no-pain, no-gain principle—that is, one must pay a cost in order to achieve a beneficial outcome. For example, they infer the quality of a product from its price and judge a bad-tasting medicine to be more effective than a tasty one. Although the use of this principle to infer the value of a product or service has been observed in several domains, the processes that underlie its use have not been fully explored. We find that when people feel out of control, they tend to use the principle because it exemplifies a causal relationship between actions and outcomes and endorsing it reaffirms their belief that they have control over the outcomes of their behavior. Our findings have implications for how marketers might position products and services to attract consumers who perceive themselves as having different levels of control.  相似文献   
2.
We propose generalized versions of strong equity and Pigou–Dalton transfer principle. We study the existence and the real-valued representation of social welfare relations satisfying these two generalized equity principles. Our results characterize the restrictions on one period utility domains for the equitable social welfare relations (i) to exist; and (ii) to admit real-valued representations.  相似文献   
3.
Automated content analysis of online travel reviews allows identification of topics of travelers' satisfaction, yet its domain is not well researched. We suggest that the Anna Karenina principle positing a greater variability of the factors leading to business failure as opposed to those leading to success can be applied to the domain of visitors’ reviews of historic and cultural attractions. The larger variability of issues in reviews of dissatisfied visitors is likely to result in limitations for automated topic modeling. We confirm our proposition using TripAdvisor reviews of the Terracotta Army museum in China, and validate the outcome with two additional sites. The study strongly suggests that application of unsupervised topic mining algorithms to negative reviews may be problematic and the results should be treated with caution. The main themes of dissatisfaction of visitors to all three sites are reported and practical implications for management of the attractions are discussed.  相似文献   
4.
In this article, we investigate the pricing and convergence of general non-affine non-Gaussian GARCH-based discretely sampled variance swaps. Explicit solutions for fair strike prices under two different sampling schemes are derived using the extended Girsanov principle as the pricing kernel candidate. Following standard assumptions on time-varying GARCH parameters, we show that these quantities converge respectively to fair strikes of discretely and continuously sampled variance swaps that are constructed based on the weak diffusion limit of the underlying GARCH model. An empirical study which relies on a joint estimation using both historical returns and VIX data indicates that an asymmetric heavier tailed distribution is more appropriate for modelling the GARCH innovations. Finally, we provide several numerical exercises to support our theoretical convergence results in which we further investigate the effect of the quadratic variation approximation for the realized variance, as well as the impact of discrete versus continuous-time modelling of asset returns.  相似文献   
5.
马克思主义为什么行?为什么要坚持马克思主义在意识形态指导地位的根本制度?这是一个非常重大、非常严肃的问题,需要认真回答。在当今世界,马克思主义是世界范围的真实存在,没有任何一种学说能像马克思主义那样深刻地影响并改变世界,没有任何一种理论能像马克思主义那样深刻的影响并改变中国。历史充分证明,马克思主义是中国共产党赢得胜利的"看家本领"。在新时代以习近平为核心的党中央坚强领导下,我们依然要加强马克思主义理论引领和思想武装,依然要坚持运用这个强大的思想武器克服发展中的一系列难题,不断开辟当代中国马克思主义、21世纪马克思主义新境界,不断推进中国特色社会主义的伟大事业奋勇前行。  相似文献   
6.
7.
《Journal of Retailing》2021,97(3):477-491
In-store displays aim to boost sales of both utilitarian and hedonic products. Noting typical differences in the information processing and purchase behavior evoked by these product types, and building on congruency theory principles, the authors propose that different types of in-store displays (i.e., island, end-of-aisle, or shelf signage) are more appropriate for utilitarian versus hedonic products, and the use of price or product promotions might reinforce these effects. With a database that combines three data sources (scanner, observational, and survey), this article presents an analysis of a market share model at the SKU level. The results confirm that in-store displays have differential effects on sales, depending on their characteristics; congruency between the decision-making process of utilitarian versus hedonic products and the characteristics of in-store display types moderates their effectiveness in terms of SKU sales. Shelf signage strongly increases the sales of utilitarian products, whereas island and end-of-aisle displays increase sales of hedonic product categories more effectively. The use of congruent promotions creates synergistic influences that reinforce these effects. In particular, price promotions improve the impact of shelf signage on utilitarian products, and product promotions strengthen the impacts of island and end-of-aisle displays on hedonic products. These results extend prior research on in-store marketing actions and the nature of utilitarian versus hedonic products, as well as providing recommendations for retailers and manufacturers seeking to optimize their retail space and commercial budgets.  相似文献   
8.
Abstract

The present study investigates how the most foundational factors to individual differences – personality traits and personal values – affect the perceived safety of genetic modification and their relative importance. Publicly available communication data from 522 Twitter accounts discussing genetically modified foods and their safety was processed in two steps. First, accounts were categorized by the researchers as viewing GM foods as either safe or not safe. Second, using the IBM Watson platform, the Twitter communication data were subjected to lexical analysis to assign scores according to the Five Factor Model for personality traits and Schwartz’s basic individual values to the individual accounts. Logistic regression analyses were performed to determine how perceived GM food safety is linked to personality traits and individual values. Although both traits and values significantly contribute to explaining GM attitudes, personality traits strongly moderate the effect of individual values on risk perception.  相似文献   
9.
张城 《开放时代》2020,(2):24-52
经史关系是中国思想史的核心问题,贯穿于周秦以来历史发展的全过程。中国共产党一经成立即面临自身独有的经史关系,即马克思主义之"经"与中国实践之"史"的关系,核心命题即马克思主义中国化。值得特别注意的是,马克思主义中国化与"六经皆史"处理经史关系的方法论十分相似。而这并非巧合,有其理论渊源:一方面,中国共产党是中华民族优秀文化之继承者,建党伊始就自觉从中汲取养分;另一方面,范文澜作为关键人物,成为毛泽东与章学诚二者之间的思想榫卯。就在马克思主义中国化命题提出之际,范文澜抵达延安,其所提出的中国经学史演变之宏论深为毛泽东器重。面对类似的经史关系问题,又有关键人物为思想之榫卯,"六经皆史"论与马克思主义中国化二者之间,就产生了内生性逻辑关联,极具方法论启示之意蕴。  相似文献   
10.
财务会计原则中的重要性原则是属于西方财务会计的一条重要原则。对于重要性原则的正确认识和运用,能够使财务会计工作中核算费用大大降低,同时使财务会计工作数据信息更加准确,对于财务会计人员来讲是非常有利的一项原则。因此,论文就现如今财务会计性原则中的重要性原则作深入论述。  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