全文获取类型
收费全文 | 27004篇 |
免费 | 240篇 |
专业分类
财政金融 | 4678篇 |
工业经济 | 1478篇 |
计划管理 | 4177篇 |
经济学 | 6065篇 |
综合类 | 587篇 |
运输经济 | 65篇 |
旅游经济 | 203篇 |
贸易经济 | 6055篇 |
农业经济 | 355篇 |
经济概况 | 2957篇 |
信息产业经济 | 45篇 |
邮电经济 | 579篇 |
出版年
2021年 | 61篇 |
2020年 | 108篇 |
2019年 | 164篇 |
2018年 | 2543篇 |
2017年 | 2331篇 |
2016年 | 1452篇 |
2015年 | 232篇 |
2014年 | 292篇 |
2013年 | 1180篇 |
2012年 | 726篇 |
2011年 | 2326篇 |
2010年 | 2074篇 |
2009年 | 1804篇 |
2008年 | 1793篇 |
2007年 | 2104篇 |
2006年 | 297篇 |
2005年 | 590篇 |
2004年 | 704篇 |
2003年 | 818篇 |
2002年 | 480篇 |
2001年 | 263篇 |
2000年 | 237篇 |
1999年 | 186篇 |
1998年 | 206篇 |
1997年 | 188篇 |
1996年 | 185篇 |
1995年 | 131篇 |
1994年 | 133篇 |
1993年 | 150篇 |
1992年 | 170篇 |
1991年 | 173篇 |
1990年 | 129篇 |
1989年 | 120篇 |
1988年 | 99篇 |
1987年 | 106篇 |
1986年 | 134篇 |
1985年 | 169篇 |
1984年 | 145篇 |
1983年 | 165篇 |
1982年 | 136篇 |
1981年 | 130篇 |
1980年 | 147篇 |
1979年 | 128篇 |
1978年 | 97篇 |
1977年 | 118篇 |
1976年 | 104篇 |
1975年 | 99篇 |
1974年 | 91篇 |
1973年 | 74篇 |
1972年 | 62篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
11.
Without guaranteed compensation, granted by the German Renewable Energy Sources Act (Erneuerbare Energien Gesetz/EEG), biogas plants compete with all other plant types on the market for electrical energy. However, exchange-based electricity products do not currently permit an economically viable operation of biogas plants owing to their cost situation. 相似文献
12.
13.
Do local partners' network attributes affect the survival of high-tech international joint ventures (IJV)? How does the effect of network attributes vary in different subnational institutional environments? While the classic economic explanation for IJV formation and subsequent performance draws from the resource-based view (RBV), we add the relational dimension to explain that IJV survival may be affected by local partners’ relation-specific assets within the local network. We test the effect of the local partners’ network attributes as calculated by UCINET (centrality, network status, and structural hole position) on IJV survival. We additionally assert that this relationship is moderated by subnational institutional heterogeneity. Using our sample of 125 IJV dyadic pairs of US multinational enterprises (MNEs) operating in high-tech industries and their local partners in China, we find partial support for our claims. 相似文献
14.
We study the effect of the educational diversity of managers on the performance of team‐managed mutual funds using a large sample of U.S. equity funds from 1994 to 2013. We consider diversity in terms of both final educational degree and field of educational specialisation. We find that, in general, both types of diversity have a positive impact on fund performance, and our results are robust over a wide range of performance metrics and changes in market conditions. 相似文献
15.
We explore the innovation performance benefits of alliances for spin-off firms, in particular spin-offs either from other firms or from public research organizations. During the early years of the emerging combinatorial chemistry industry, the industry on which our empirical analysis focuses, spin-offs engaged in alliances with large and established partners, partners of similar type and size, and with public research organizations, often for different reasons. We seek to understand to what extent alliances of spin-offs with other firms (either large- or small- and medium-sized firms) affected their innovation performance and also how this performance may have been affected by their corporate or public research background. We find evidence that in general alliances of spin-offs with other firms, in particular alliances with large firms, increased their innovation performance. Corporate spin-offs that formed alliances with other firms outperformed public research spin-offs with such alliances. This suggests that, in terms of their innovation performance, corporate spin-offs that engaged in alliances with other firms seemed to have benefitted from their prior corporate background. Interestingly, it turns out that the negative impact of alliances on the innovation performance of public research spin-offs was largely affected by their alliances with small- and medium-sized firms. 相似文献
16.
Dimitar Anguelov Helga Leitner Eric Sheppard 《International journal of urban and regional research》2018,42(4):573-593
Urban entrepreneurialism and neoliberal urban governance are assuming new forms under finance‐dominated accumulation. We examine and contribute to theorizing the mechanisms through which urban governance is financialized, taking as a case study JESSICA, one of the European Union's initiatives to implement an ‘urban sensitive’ policy for sustainable and integrated development. Like other initiatives promoting financialization, JESSICA deploys the logic of finance to select and fund urban social initiatives and development projects on the basis of their potential return on investment (ROI). Understanding this process requires placing questions of political economy—how urban governance is shaped by the broader political‐economic context—with questions of governmentality—how stakeholders are enrolled in and come to take for granted new governance initiatives. Following the multi‐scalar institutional infrastructure is crucial to understanding how this works. Taking a relational multi‐scalar approach, we trace how changes at the supranational scale filter down to shape urban policy selection and performance in Sofia, Bulgaria, where we document how ROI calculations conflict with social welfare priorities. Contrasts between the trajectory of financialization of urban governance in the European Union and the United States demonstrate how this is geographically variegated, shaped by the broader context/conjuncture within which such financialization is embedded. 相似文献
17.
18.
19.
20.
Studies that simultaneously explore the effects of sensory experience on consumer emotions and behavior are rare. This paper builds a model of buying behavior based on sensory experience, 570 valid questionnaires were obtained from coffeehouse customers. Using structural equation modeling and multiple regression analysis, this paper validates the concept model and verifies that sensory experience is a significant antecedent to buying behavior. This study indicates that certain sensory experiences significantly influence emotion. Emotion also plays a mediating role in the relationship between sensory experience and behavioral intentions. The findings are theoretically and practically profound as they address the relationships among sensory experience, consumer emotions, behavioral intentions, and buying behavior, as well as explore how the five senses affect emotions and buying behavior. This paper concludes by indicating managerial implications and research limitations. 相似文献