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   2758篇
  免费   103篇
财政金融   411篇
工业经济   130篇
计划管理   520篇
经济学   567篇
综合类   9篇
运输经济   20篇
旅游经济   37篇
贸易经济   482篇
农业经济   111篇
经济概况   571篇
邮电经济   3篇
  2021年   27篇
  2020年   48篇
  2019年   65篇
  2018年   79篇
  2017年   90篇
  2016年   74篇
  2015年   54篇
  2014年   96篇
  2013年   321篇
  2012年   117篇
  2011年   127篇
  2010年   106篇
  2009年   111篇
  2008年   101篇
  2007年   113篇
  2006年   110篇
  2005年   93篇
  2004年   72篇
  2003年   67篇
  2002年   51篇
  2001年   45篇
  2000年   46篇
  1999年   46篇
  1998年   38篇
  1997年   39篇
  1996年   26篇
  1995年   21篇
  1994年   17篇
  1993年   32篇
  1992年   25篇
  1991年   23篇
  1990年   18篇
  1989年   24篇
  1988年   15篇
  1987年   18篇
  1986年   18篇
  1985年   23篇
  1984年   21篇
  1983年   25篇
  1982年   26篇
  1981年   16篇
  1980年   25篇
  1979年   19篇
  1978年   14篇
  1975年   15篇
  1973年   12篇
  1971年   11篇
  1967年   12篇
  1963年   15篇
  1961年   11篇
排序方式: 共有2861条查询结果,搜索用时 15 毫秒
991.
In this note we provide a strategic implementation of the Average Tree solution for zero-monotonic cycle-free graph games. That is, we propose a non-cooperative mechanism of which the unique subgame perfect equilibrium payoffs correspond to the average hierarchical outcome of the game. This mechanism takes into account that a player is only able to communicate with other players (i.e., to make proposals about a division of the surplus of cooperation) when they are connected in the graph.  相似文献   
992.
In many online systems, individuals provide services for each other; the recipient of the service obtains a benefit but the provider of the service incurs a cost. If benefit exceeds cost, provision of the service increases social welfare and should therefore be encouraged—but the individuals providing the service gain no (immediate) benefit from providing the service and hence have an incentive to withhold service. Hence, there is scope for designing a protocol that improves welfare by encouraging exchange. To operate successfully within the confines of the online environment, such a protocol should be distributed, robust, and consistent with individual incentives. This paper proposes and analyzes protocols that rely solely on the exchange of fiat money or tokens. The analysis has much in common with work on search models of money but the requirements of the environment also lead to many differences from previous analyses—and some surprises; in particular, existence of equilibrium becomes a thorny problem and the optimal quantity of money is different.  相似文献   
993.
To contribute to the debate on the role of social media in responsible business, this article explores blogger buzz in reaction to food companies’ press releases on health and obesity issues, considering the content and the level of fit between the CSR initiatives and the company. Findings show that companies issued more product-related initiatives than promotion-related ones. Among these, less than half generated a substantial number of responses from bloggers, which could not be identified as a specific group. While new product introductions led to positive buzz, modifications of current products resulted in more negative responses, even if there was a high fit with core business. While promotion-related press releases were received negatively in general, particularly periphery promotion (compared to core promotion) generated most reactions. Our exploratory study suggests that companies can increase the likelihood of a positive reaction if they carefully consider the fit between initiatives and their core business, while taking the notion of ‘controversial fit’, relating to the unhealthy nature of original products, into account. Further research avenues and implications, as well as limitations, are discussed.  相似文献   
994.
This paper contributes to the literature on international firm activities by providing the first evidence on the link between productivity and both exports and foreign direct investment (FDI) in services firms from a highly developed country. It uses unique new data from Germany, one of the leading actors in the world market for services. Statistical tests and regression analyses indicate that the productivity pecking order found in numerous studies using data for firms from manufacturing industries – where the firms with the highest productivity engage in FDI while the least productive firms serve the home market only and the productivity of exporting firms is in between – does not exist among firms from services industries. There is evidence that firms with FDI are less productive than firms that export; this finding is in line with recent empirical results reported for software firms from India.  相似文献   
995.
This article presents an exploratory study of the scales used to measure the perceived image and advertising effectiveness of celebrity endorsers in a tourism context. The respondents are tourists from mainland China who were exposed to manipulated tourism destination advertisements. The results indicate that the dimension of trustworthiness is not as distinct as has been proposed, and the framework was modified accordingly. The revised model achieved an acceptable fit and is deemed appropriate for follow-up studies.  相似文献   
996.
This study investigates product, process, and management innovation among a sample of Spanish manufacturing small and medium‐sized enterprises (SMEs) during the current economic downturn and a period of economic growth. Tobit analyses examined whether the level of process, product, and management innovation changed during the recessionary period relative to the expansionary period; and MCO estimations were used to show whether the recession affected the relationship between SME innovation and performance. Three main findings are: (1) innovation among Spanish manufacturing SMEs declined during the recent economic crisis; (2) the type of innovation at Spanish manufacturing SMEs changed during different economic conditions; and (3) innovation was positively associated with firm performance during the economic expansion and recession years. The results demonstrate the importance of adopting innovation into SME strategy over the business cycle. The findings have relevance to SMEs, government policymakers, and providers of consulting services.  相似文献   
997.
Abstract

Social media are increasingly populated with brand messages that are linked to timely events, a practice that is also known as real-time marketing (RTM). In this study, we examine whether RTM is an effective strategy to boost sharing behaviour, and if so, what moment- and content-related characteristics contribute to its effectiveness. A content analysis of brand tweets from Nielsen’s top-100 advertisers (n?=?1500) shows that RTM positively affects word of mouth. RTM is especially a more effective strategy when brand messages are linked with unpredictable events (vs. predictable). This can be explained by the meaningfulness dimension of creativity; brands make a more meaningful connection to timely moments in unpredictable RTM than in predictable RTM. Furthermore, we found support for the beneficial effects of moment-driven visuals; RTM messages are shared more when public events are visually integrated with those messages. No such effect was found for moment-driven hashtags.  相似文献   
998.
Rhetorical tropes like metaphors and irony are widely used in print advertising. Current advertising literature assumes that these different tropes (metaphor, irony) are persuasive when they are sufficiently novel and complex to increase advertising elaboration. However, we propose that, in some cases, tropes can also be persuasive when they present conventional and concrete images of abstract product qualities. To test if conventionality can explain the persuasiveness of various tropes (metaphor, irony), we conducted a 2 (conventional metaphor vs. no metaphor) × 2 (conventional irony vs. no irony) multiple-message experiment. Results demonstrate that conventional metaphors are persuasive by reducing complexity and increasing creativity and ad appreciation. Conventional irony, in contrast, has little effect on persuasiveness. Thus, differentiating between various tropes (metaphor, irony) is important in predicting persuasion effects: advertisers should refrain from using conventional irony, but including conventional metaphors about abstract product qualities in print advertising is advisable.  相似文献   
999.
This research presents a case study of a joint business degree program between an Association to Advance Collegiate Schools of Business International (AACSB‐I) accredited business school in the United States and a Chinese PhD granting partner university. The case investigates the impact of a U.S.‐based curriculum, taught by U.S. instructors and which uses all English instruction on Chinese student perceptions of program emphases and satisfaction. It compares these perceptions with those of U.S. sister students. The comparison reveals program dissatisfaction among Chinese students when contrasted to U.S. students and for the most part a failure to attend to the program emphases of the West. Reasons for the departures are explored and strategies for improvement are developed.  相似文献   
1000.
Cotton farmers in many developing countries are facing decreasing marginal returns due to stagnating yields and high input costs. Conversion to organic management could offer an alternative. In a two year comparative study in central India covering 170 cotton fields, organic farms achieved cotton yields that were on par with those in conventional farms, whereby nutrient inputs and input costs per crop unit were reduced by half. Due to 10–20% lower total production costs and a 20% organic price premium, average gross margins from organic cotton fields were 30–40% higher than in the conventional system. Although the crops grown in rotation with cotton were sold without premium, organic farms achieved 10–20% higher incomes from agriculture. In addition to these economic benefits, the organic farming system does not burden soil and groundwater with synthetic fertilizers and pesticides. However, in this study only minor differences were detected in soil fertility parameters of organic and conventional fields. Altogether, the results suggest that conversion to organic farming can improve livelihoods of smallholders while protecting natural resources. Income loss due to reduced yields in initial years of transition, however, constitutes a major hurdle, especially for poorer farmers. It is thus important to support farmers in overcoming the obstacles of the conversion period.  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