全文获取类型
收费全文 | 17433篇 |
免费 | 41篇 |
专业分类
财政金融 | 2748篇 |
工业经济 | 804篇 |
计划管理 | 2684篇 |
经济学 | 4077篇 |
综合类 | 486篇 |
运输经济 | 12篇 |
旅游经济 | 8篇 |
贸易经济 | 4581篇 |
农业经济 | 30篇 |
经济概况 | 1428篇 |
信息产业经济 | 44篇 |
邮电经济 | 572篇 |
出版年
2023年 | 2篇 |
2022年 | 8篇 |
2021年 | 9篇 |
2020年 | 19篇 |
2019年 | 28篇 |
2018年 | 2315篇 |
2017年 | 2070篇 |
2016年 | 1230篇 |
2015年 | 107篇 |
2014年 | 109篇 |
2013年 | 124篇 |
2012年 | 468篇 |
2011年 | 1967篇 |
2010年 | 1859篇 |
2009年 | 1550篇 |
2008年 | 1538篇 |
2007年 | 1886篇 |
2006年 | 89篇 |
2005年 | 399篇 |
2004年 | 490篇 |
2003年 | 572篇 |
2002年 | 268篇 |
2001年 | 85篇 |
2000年 | 67篇 |
1999年 | 10篇 |
1998年 | 33篇 |
1997年 | 12篇 |
1996年 | 20篇 |
1995年 | 6篇 |
1994年 | 10篇 |
1993年 | 9篇 |
1992年 | 5篇 |
1991年 | 8篇 |
1990年 | 3篇 |
1989年 | 5篇 |
1988年 | 3篇 |
1986年 | 17篇 |
1985年 | 4篇 |
1984年 | 5篇 |
1983年 | 7篇 |
1982年 | 9篇 |
1981年 | 11篇 |
1980年 | 5篇 |
1979年 | 8篇 |
1978年 | 7篇 |
1976年 | 2篇 |
1974年 | 2篇 |
1972年 | 3篇 |
1956年 | 1篇 |
1955年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
992.
Regulation of relationships between heterogeneous farmers and an aquifer accounting for lag effects
下载免费PDF全文
![点击此处可从《The Australian journal of agricultural and resource economics》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Cyril Bourgeois Pierre‐Alain Jayet 《The Australian journal of agricultural and resource economics》2016,60(1):39-59
Many environmental problems are due to damage caused by pollutants that accumulate with a time lag following their emission. In this study, we focus on nitrates used in agriculture, which can pollute groundwater many years after their initial application. A dynamic optimal control problem with heterogeneous farmers is proposed. The usual structural parameters such as the discount rate, the natural clearing rate and the lagged time interval between the occurrence of soil‐level pollution and the impact on groundwater are taken into account. We also examine pollution as caused by a continuous set of farms characterised by their individual performance index and by their individual marginal contribution to the pollution. The issue is further investigated by taking account of change in the information context, successively related to perfect information and to asymmetric information. As a result, when the delay between the spreading of N‐fertilizer and the impact on the aquifer increases, that is, the longer the lag, the steady‐state pollution stock and the steady‐state shadow price of the stock both increase. Moreover, we show that the optimal regulation may require a decreasing amount of fertilizer over time, even in the case of initial underpollution. 相似文献
993.
Cheng-Ping Chang 《Quality and Quantity》2009,43(3):417-429
The economic development of high-tech industries in Taiwan focuses on IC design, opt electrics, semiconductors, computer science and telecommunication. It is necessary for business to understand the relations and significance of the economic performance to take the responsibility and keep a positive corporate image, thus they can earn more admiration and trust from customers. How do they take the social responsibility to improve their corporate image and create the economic performance, and finally reach the top one of the whole world? This study discusses the subject concerning the continuing development of business and relevant issues stated above. We found that 68.1% of high-tech industries in Taiwan are in accordance with business ethics and norms of conduct. Businesses take their responsibility practically by participating in public welfare activities. The more responsibilities they fulfill; the better image they have. High-tech industries should target the social responsibility as their first goal and secondly improve their corporate image to increase the economic performance. 相似文献
994.
Byoungho Jin Sojin Jung So Won Jeong 《The International Entrepreneurship and Management Journal》2018,14(1):195-215
This study examines how three different dimensions of entrepreneurial orientation (proactiveness, innovativeness, and risk-taking) each determine internationalization strategies and enhance international performance among small and medium-sized enterprises (SMEs) through the mediating role of marketing capabilities. An integrative theoretical framework built on international entrepreneurship and a resource-based approach was tested in the context of Korean SMEs. Analyses of 401 survey data collected from Korean exporting SMEs revealed the differential effects of each entrepreneurial orientation and the mediating effect of marketing capability on internationalization strategies and performance. Proactiveness and risk taking appeared to function as significant antecedents of marketing capability. Marketing capability, in turn, significantly decreased internationalization scope and increased the financial performance of Korean SMEs, though it did not influence internationalization scale. This study further confirms that the mediating role of marketing capability in entrepreneurial orientation-performance relationships vary by entrepreneurial orientation dimensions. Taking the direct and indirect roles of the entrepreneurial orientation dimensions together, this study recommends the critical prioritization of risk-taking over proactiveness. It extends previous approaches to the triad of resource–capability–performance. Theoretical contributions and insightful managerial implications are also provided. 相似文献
995.
996.
Gina Santos Carla S. Marques João J. M. Ferreira 《The International Entrepreneurship and Management Journal》2018,14(4):807-821
This study seeks to identify the antecedents of women’s entrepreneurial orientation (EO) and exploring what possible relationships that may exist between them. The research focuses on women entrepreneurs and non-entrepreneurs in a quantitative perspective whose methodology consisted of the collection of primary data through a survey distributed to women in Portugal. After structural equation modelling was applied, the results suggested that recognition of opportunities influences EO. This influence is expressed both directly and indirectly through training in management and entrepreneurial skills. These findings led to the conclusion that policies promoting training for community members, in general, need to be rethought and policies need to emphasise training in management that enhances entrepreneurial skills, thereby increasing the proliferation of entrepreneurship. Entrepreneurship education and training should be promoted from basic education onwards in order to develop entrepreneurial skills from an early age. Prior to this study, the relationships between opportunity recognition, management training and entrepreneurial skills have never been studied in relation to women. 相似文献
997.
María Jesús Rodríguez-Gulías David Rodeiro-Pazos Sara Fernández-López Christian Corsi Antonio Prencipe 《The International Entrepreneurship and Management Journal》2018,14(4):1111-1130
The establishment of spin-offs to commercialise university knowledge/technology is a potential mechanism to promote economic and innovative development. Nevertheless, University Spin-Offs (USOs) are usually resource-constrained, especially in obtaining funding, limiting their growth. Venture Capital (VC) investors play an important role in the financing and the improvement of their managerial skills, which are critical for firm growth. This paper aims to explore both the effect of VC partners on the USOs’ growth and the cross-national differences in the role played by them. To study both issues, we empirically analysed 516 Spanish and 904 Italian USOs created by 50 Spanish and 57 Italian universities, respectively, and observed them between 2005 and 2013. The results showed different effects in the Spanish and Italian cases. While in Spain the presence of VC partners positively affects the USOs’ growth, in Italy there is not a significant effect. This evidence calls for systematic policies by public administrations and universities to foster USO growth. 相似文献
998.
Nancy Vargas M. Begoña Lloria Addisson Salazar Luis Vergara 《The International Entrepreneurship and Management Journal》2018,14(4):1053-1069
The main aim of this study is to establish the effect of the Exploitation and Exploration; and the influence of these learning flows on the Innovative Outcome (IO). The Innovative Outcome refers to new products, services, processes (or improvements) that the organization has obtained as a result of an innovative process. For this purpose, a relationship model is defined, which is empirically contrasted, and can explains and predicts the cyclical dynamization of learning flows on innovative outcome in knowledge intensive firms. The quantitative test for this model use the data from entrepreneurial firms biotechnology sector. The statistical analysis applies a method based on variance using Partial Least Squares (PLS). Research results confirm the hypotheses, that is, they show a positive dynamic effect between the Exploration and the Innovative as outcomes. In the same vein, they results confirm the presence of the cyclic movement of innovative outcome with the Exploitation. 相似文献
999.
This paper offers an overview of the literature on the economic and financial applications of theory of nonlinear dynamics, especially bifurcation theory. After a short introductory discussion of the first nonlinear dynamic models in social sciences and the economic relevance of the zoo of bifurcations and complicated dynamics that such models can generate, we present an overview of the literature on nonlinear dynamic models in the areas of underdevelopment, environmental poverty traps, the management of common goods, industrial organization and financial markets. The review of the literature is enriched by reflections and ideas for future research. 相似文献
1000.