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   69764篇
  免费   1266篇
  国内免费   83篇
财政金融   9020篇
工业经济   4754篇
计划管理   14486篇
经济学   12985篇
综合类   6514篇
运输经济   499篇
旅游经济   461篇
贸易经济   7652篇
农业经济   4118篇
经济概况   10424篇
信息产业经济   21篇
邮电经济   179篇
  2024年   126篇
  2023年   570篇
  2022年   1149篇
  2021年   1723篇
  2020年   1730篇
  2019年   1121篇
  2018年   971篇
  2017年   1692篇
  2016年   1274篇
  2015年   1684篇
  2014年   2173篇
  2013年   3698篇
  2012年   5363篇
  2011年   8460篇
  2010年   7556篇
  2009年   4787篇
  2008年   5175篇
  2007年   4765篇
  2006年   5381篇
  2005年   4683篇
  2004年   1399篇
  2003年   1288篇
  2002年   1204篇
  2001年   1090篇
  2000年   542篇
  1999年   363篇
  1998年   229篇
  1997年   193篇
  1996年   118篇
  1995年   68篇
  1994年   81篇
  1993年   98篇
  1992年   73篇
  1991年   56篇
  1990年   47篇
  1989年   35篇
  1988年   22篇
  1987年   13篇
  1986年   4篇
  1985年   12篇
  1984年   49篇
  1983年   7篇
  1982年   7篇
  1981年   5篇
  1980年   4篇
  1979年   6篇
  1978年   7篇
  1976年   3篇
  1975年   3篇
  1900年   1篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
121.
本文介绍了法国科研税收补偿政策的主要内容及特点,并提出了相应的激励我国企业进行研发或创新的借鉴建议。  相似文献   
122.
Using high-frequency intraday data, this study provides strong empirical evidence that elevated oil price uncertainty has a significant and negative influence on stock liquidity. More specifically, the results suggest that large oil-related corporations are most affected, followed by small-listed firms more generally. Further analysis reveals that liquidity providers widen the bid-ask spreads to protect themselves during periods of high oil price uncertainty for large-listed firms, particularly those in the oil industry. These findings are robust to various measures of oil price uncertainty, different market conditions, structural break analysis and show the influence of oil price movements extends to stock liquidity.  相似文献   
123.
Our research expands the scope of the research on oppositional loyalty from brands to online communities. Online communities allow members to freely express their opinions and promote the occurrence of oppositional loyalty behaviours towards the communities. Oppositional loyalty is defined in this article that, for the purpose of strengthening the market position of their preferred community, members of the online community may express negative views or even show oppositional behaviour towards adversarial communities. In view of social capital theory, the study examines the effect of hedonic value and utilitarian value on oppositional loyalty in online communities. The results show that only hedonic value significantly affects oppositional loyalty; hedonic value mediates the effect of the three dimensions of social capital (network ties, identification, and common language) on oppositional loyalty. The study identifies that community type moderates the impact of social capital (identification and common language) on hedonic value but does not moderate the effect of social capital on utilitarian value. Finally, we find that members' oppositional loyalty towards their community can promote their community participation. This research provides recommendations for online community managers to manage and benefit from members' oppositional loyalty.  相似文献   
124.
Existing studies show the role of empathy with nature in improving attitudes toward the environment. This article demonstrates that induced empathy with nature can improve environmental behaviours and commitments. We find that environmental commitment and behaviour are positively affected by empathy with nature and establish a causal model between empathy with nature and pro-environmental behaviour. We further investigate the relationship between self-construal (interdependent or independent), empathy with nature (existing or non-existing) and pro-environmental behaviour. The results indicate that participants who have empathy with nature display stronger pro-environmental behaviour, particularly in the private domain. Commitment to the environment plays a mediating role in this relationship and self-construal plays a moderating role. Specifically, for individuals with interdependent self-construal, empathy with nature promotes pro-environmental behaviour, whereas for individuals with independent self-construal, empathy with nature has no statistically significant effect on pro-environmental behaviour.  相似文献   
125.
Uniform pricing, which is a pricing strategy that sets a unified price for all products in the store or all products in the same category, is becoming increasingly popular over the past decades. However, scarce attention has been paid to investigating its impact on consumer behaviour. This research investigates the influence of uniform pricing on product value judgements and purchase intentions. Four studies demonstrate that uniform pricing (vs. non-uniform pricing) could induce stronger promotion perception, which leads to more positive product value judgements and purchase intentions. Moreover, price sensitivity and product involvement moderate this effect, and this effect only exists for high price-sensitive consumers and low product involvement consumers.  相似文献   
126.
Local retail stores are currently facing intense competition from both online retailers and large chain stores. An understanding of local retail store patronage (i.e., patronage of retail stores in one's own community) is essential to the survival and growth of local retailers. Drawing on Social Capital Theory, we theorize and show with store-level survey data the influence of social capital (community attachment and reciprocity) on local retail store patronage in a large urban setting. We find that the impact of social factors differs for residents within the community compared to those outside of the community. We also demonstrate the importance of social factors in comparison to non-social factors. These findings contribute to the literature by extending the impact of social capital on local retail store patronage beyond rural settings, providing insight into urban consumers' decision to patronize local retail stores, and highlighting the impact of community boundaries. These findings also generate practical recommendations for local merchants and stress the importance of building reciprocal relationships with local customers as well as varying communications across community boundaries.  相似文献   
127.
Inspirational brand story is a widely used marketing strategy in brand building. However, few empirical studies have investigated the underlying mechanism and boundary conditions of a successful brand story strategy. The current study examined the influence of lead character's gender in inspirational brand story on consumer–brand identification based on the social identity theory, benevolent sexism, and gender schema theory. Results from two experiments demonstrated that the gender of inspirational brand stories has an impact on consumer brand identity through the mediation effect of sympathy. Compared with a male character, a female character elicits viewers' sympathy, which results in high brand identification. Such a gender effect is stronger when there is a high level of perceived gender role conformity. Theoretical and managerial implications are discussed.  相似文献   
128.
Mortgage debt is financially burdensome for many older homeowners in the United States. As people age, declining health can bring about increased healthcare costs. Focusing on homeowners aged 50 and older in the U.S., we investigate two research questions: (1) To what extent does a heath shock affect the likelihood of paying off a mortgage voluntarily or involuntarily? and (2) how long does a health shock delay the time it takes to pay off a mortgage? We used eight biannual waves (2004–2018) of the Health and Retirement Study containing 11,772 borrowers to build survival regression models. Results showed that a health shock reduced the likelihood of voluntary payoff by 12%, while it increased the probability of involuntary payoff by 18%. A health shock delayed voluntary and involuntary payoffs for 30 and 21 months, respectively. We discuss tax deduction and HELOCs as strategies to reduce older homeowners' mortgage strain.  相似文献   
129.
Consumer education on food handling behavior is regarded as an effective method to improve domestic food safety and prevent foodborne illness, but is usually overlooked in rural areas. Using a presurvey and two rounds of postsurveys targeted at rural consumers from China included in a randomized controlled trial, this study investigated the effectiveness of two information interventions—a leaflet with tips for best practices and the leaflet plus consumer education sessions conveyed by phone—and compared them with a control group. Cloth use behavior was the target in the trial and five specific aspects were evaluated: (1) whether the cloth was made of old clothes, (2) whether the one used to clean kitchen tables was also used to wash dishes, (3) whether it was hung to dry, (4) how it was disinfected, and (5) how long the cloth was used before being discarded. Firstly, consumers' behavior was scored by summing the above-mentioned five behaviors. The results estimated using the difference-in-difference model showed that respondents in the leaflet-only group improved to a greater extent than those in the control group, but their difference in progress was not statistically significant until the second round of the postsurvey. Respondents in the leaflet-plus-phone group were quicker to adopt suggested practices and made discernible improvements compared with those in the leaflet-only group in the first round of the postsurvey, but the gap between these groups narrowed to statistically insignificant in the second round of the postsurvey. It was concluded that one consumer education session was effective and made a difference in the long term, whereas more education sessions produced normative behavior at faster rates, showing a significant improvement in the short term. Then, the study estimated the effectiveness of interventions on the five specific behaviors separately. The results were estimated using a probit difference-in-difference model and showed that the suggested behaviors with lower costs or a greater difference from past behaviors were more likely to be adopted by consumers. Consumer education facilitates proper food handling practices among rural households, which should be considered by policy makers.  相似文献   
130.
Over 90% of exchange trading on crypto options has always been on the Deribit platform. This centralized crypto exchange only lists inverse products because they do not accept fiat currency. Likewise, other major crypto options platforms only list crypto–stablecoin trading pairs in so-called direct options, which are similar to the standard crypto options listed by the CME except the US dollar is replaced by a stablecoin version. Until now a clear mathematical exposition of these products has been lacking. We discuss the sources of market incompleteness in direct and inverse options and compare their pricing and hedging characteristics. Then we discuss the useful applications of currency protected “quanto” direct and inverse options for fiat-based traders and describe their pricing and hedging characteristics, all in the Black–Scholes setting.  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