全文获取类型
收费全文 | 1085篇 |
免费 | 55篇 |
专业分类
财政金融 | 155篇 |
工业经济 | 54篇 |
计划管理 | 251篇 |
经济学 | 334篇 |
综合类 | 1篇 |
运输经济 | 32篇 |
旅游经济 | 19篇 |
贸易经济 | 204篇 |
农业经济 | 25篇 |
经济概况 | 65篇 |
出版年
2023年 | 23篇 |
2022年 | 10篇 |
2021年 | 17篇 |
2020年 | 39篇 |
2019年 | 41篇 |
2018年 | 70篇 |
2017年 | 78篇 |
2016年 | 44篇 |
2015年 | 32篇 |
2014年 | 37篇 |
2013年 | 179篇 |
2012年 | 60篇 |
2011年 | 63篇 |
2010年 | 46篇 |
2009年 | 52篇 |
2008年 | 35篇 |
2007年 | 31篇 |
2006年 | 43篇 |
2005年 | 21篇 |
2004年 | 28篇 |
2003年 | 25篇 |
2002年 | 22篇 |
2001年 | 16篇 |
2000年 | 18篇 |
1999年 | 15篇 |
1998年 | 19篇 |
1997年 | 3篇 |
1996年 | 8篇 |
1995年 | 7篇 |
1994年 | 4篇 |
1993年 | 3篇 |
1992年 | 5篇 |
1991年 | 2篇 |
1990年 | 2篇 |
1988年 | 2篇 |
1986年 | 5篇 |
1985年 | 3篇 |
1984年 | 2篇 |
1983年 | 2篇 |
1982年 | 2篇 |
1981年 | 3篇 |
1980年 | 2篇 |
1979年 | 3篇 |
1978年 | 2篇 |
1971年 | 4篇 |
1970年 | 2篇 |
1967年 | 2篇 |
1956年 | 1篇 |
1939年 | 1篇 |
1934年 | 1篇 |
排序方式: 共有1140条查询结果,搜索用时 375 毫秒
921.
Antonio Messeni Petruzzelli 《Technovation》2011,31(7):309-319
Empirical studies on R&D collaborations between universities and firms have mainly centered their attention on universities and firms' characteristics that favor the establishment of collaborative agreements. In this paper, I extend the current research framework investigating the role that specific technological and relational attributes may play on the relevance of such collaborations. Specifically, I focus on the effects exerted by three relevant factors, namely technological relatedness, prior collaboration ties, and geographical distance, on university-industry joint innovation value. I develop testable hypotheses about their impact on the innovative performance of R&D university-industry collaborations, and test them on a sample of 796 university-industry joint patents, developed by 33 universities located in 12 different European countries. Our results suggest that partners' technological relatedness has an inverted U-shaped relationship with innovation value. In addition, prior ties and geographical distance between universities and firms are both positively related to the achievement of higher innovative outcomes. 相似文献
922.
In order to advance our knowledge of alliance-level relational capabilities, this paper investigates how searching across different knowledge domains affects both innovation value creation and appropriability in R&D alliances. Focusing on the alliance level of analysis, we advance that, in R&D strategic alliances, search span has a curvilinear (inverted U-shape) relationship with value creation and a positive relationship with value appropriability. Our analysis on a sample of 1515 interfirm dyadic R&D alliances confirms these hypotheses. We find that, after a threshold level of search span, joint value creation decreases. Conversely, the allied firms’ ability to appropriate the value of their jointly developed inventions grows exponentially as the alliance search span increases. Thus, value creation and appropriability may have conflicting exigencies. We argue that firms involved in R&D strategic alliances should develop the interorganizational relational capability to jointly manage the process of search that occurs at the interorganizational level, and specifically the span of their search, in ways that balance the needs of value creation and appropriability. 相似文献
923.
924.
We introduce a new model of aggregate information cascades where only one of two possible actions is observable to others. Agents make a binary decision in sequence. The order is random and agents are not aware of their own position in the sequence. When called upon, they are only informed about the total number of others who have chosen the observable action before them. This informational structure arises naturally in many applications. Our most important result is that only one type of cascade arises in equilibrium, the aggregate cascade on the observable action. A cascade on the unobservable action never arises. 相似文献
925.
We devise an experiment to explore the effect of different degrees of bargaining power on the design and the selection of
contracts in a hidden-information context. In our benchmark case, each principal is matched with one agent of unknown type.
In our second treatment, a principal can select one of three agents, while in a third treatment an agent may choose between
the contract menus offered by two principals. We first show theoretically how different ratios of principals and agents affect
outcomes and efficiency. Informational asymmetries generate inefficiency. In an environment where principals compete against
each other to hire agents, these inefficiencies may disappear, but they are insensitive to the number of principals. In contrast,
when agents compete to be hired, efficiency improves dramatically, and it increases in the relative number of agents because
competition reduces the agents’ informational monopoly power. However, this environment also generates a high inequality level
and is characterized by multiple equilibria. In general, there is a fairly high degree of correspondence between the theoretical
predictions and the contract menus actually chosen in each treatment. There is, however, a tendency to choose more ‘generous’
(and more efficient) contract menus over time. We find that competition leads to a substantially higher probability of trade,
and that, overall, competition between agents generates the most efficient outcomes. 相似文献
926.
927.
Ana Pérez-Luño Carmen Cabello Medina Antonio Carmona Lavado Gloria Cuevas Rodríguez 《Journal of Business Research》2011,64(12):1369-1376
This research analyzes the effects of interorganizational links on radical innovation using a comprehensive framework that integrates three research streams: social capital, the knowledge-based view and innovation. Incorporating data from 143 companies of innovative manufacturing and service industries, our results show that while knowledge complexity per se exerts a clear influence on radical innovation, the effect of knowledge tacitness appears only in combination with social capital. Similarly, the mere existence of strong cooperation agreements (relational social capital) does not guarantee more radical innovations, only when combining high levels of social capital with tacit knowledge does this antecedent produce more radical innovation. 相似文献
928.
Sergio?F.?OchoaEmail author Gabriel?Bravo José?A.?Pino Juan?Rodríguez-Covili 《Group Decision and Negotiation》2011,20(1):39-56
Inspections represent key activities in construction projects. They allow coordinating the work of the main contractor and
the subcontracted companies participating in the project. Today the inspection activities and the coordination process are
done using information recorded into paper-based blueprints. As a consequence of it, coordinating the activities derived from
inspection processes become expensive, slow and error-prone. This paper presents a mobile shared workspace, named COIN (Construction
Inspector), which helps the participants in a construction project to overcome these limitations. COIN was particularly designed
to be used on tablet PCs, but it is able to run on several computing devices. This workspace has been tested in a controlled
work scenario. The preliminary results are highly positive, indicating this proposal could have an important impact on the
construction management process. 相似文献
929.
The doctrine on the management of the health-care sector has mainly considered cooperation and competition to be opposite models. However, several recent studies of the private sector have stressed the positive effects of balancing competitive and cooperative stimuli in inter-firm relationships. Since many public health-care sectors are often characterized by the presence of both cooperative and competitive forces, this explorative analysis is aimed at identifying the possible determinants of these stimuli and analyzing the likely results of the interaction between these forces within a network of health-care trusts. A better understanding of how simultaneous cooperation and competition impact one another could help regulatory bodies to avoid implementing policies that could produce inconsistent results. 相似文献
930.
Antonio Matas-Mir 《European Economic Review》2004,48(6):1309-1332
This paper examines the proposition that the business cycle affects seasonality in industrial production, with output being switched to the traditionally low production summer months when recent (annual) growth has been strong. This is investigated through the use of a restricted threshold autoregressive model for the monthly growth rate in a total of 74 industries in 16 OECD countries. Approximately one-third of the series exhibit significant nonlinearity, with this nonlinearity predominantly associated with changes in the seasonal pattern. Estimates show that the summer slowdown in many European countries is substantially reduced in the regime of higher recent growth. 相似文献