全文获取类型
收费全文 | 5433篇 |
免费 | 171篇 |
专业分类
财政金融 | 1012篇 |
工业经济 | 484篇 |
计划管理 | 926篇 |
经济学 | 1156篇 |
综合类 | 62篇 |
运输经济 | 31篇 |
旅游经济 | 64篇 |
贸易经济 | 1195篇 |
农业经济 | 223篇 |
经济概况 | 402篇 |
邮电经济 | 49篇 |
出版年
2023年 | 34篇 |
2022年 | 26篇 |
2021年 | 57篇 |
2020年 | 90篇 |
2019年 | 114篇 |
2018年 | 137篇 |
2017年 | 154篇 |
2016年 | 187篇 |
2015年 | 136篇 |
2014年 | 160篇 |
2013年 | 592篇 |
2012年 | 230篇 |
2011年 | 229篇 |
2010年 | 199篇 |
2009年 | 243篇 |
2008年 | 188篇 |
2007年 | 200篇 |
2006年 | 161篇 |
2005年 | 139篇 |
2004年 | 141篇 |
2003年 | 154篇 |
2002年 | 123篇 |
2001年 | 119篇 |
2000年 | 100篇 |
1999年 | 101篇 |
1998年 | 104篇 |
1997年 | 90篇 |
1996年 | 90篇 |
1995年 | 79篇 |
1994年 | 79篇 |
1993年 | 68篇 |
1992年 | 78篇 |
1991年 | 63篇 |
1990年 | 64篇 |
1989年 | 64篇 |
1988年 | 52篇 |
1987年 | 44篇 |
1986年 | 57篇 |
1985年 | 71篇 |
1984年 | 69篇 |
1983年 | 52篇 |
1982年 | 75篇 |
1981年 | 48篇 |
1980年 | 48篇 |
1979年 | 38篇 |
1978年 | 36篇 |
1977年 | 35篇 |
1976年 | 32篇 |
1975年 | 28篇 |
1972年 | 21篇 |
排序方式: 共有5604条查询结果,搜索用时 15 毫秒
991.
Classical estimation techniques for linear models either are inconsistent, or perform rather poorly, under α-stable error densities; most of them are not even rate-optimal. In this paper, we propose an original one-step R-estimation method and investigate its asymptotic performances under stable densities. Contrary to traditional least squares, the proposed R-estimators remain root-n consistent (the optimal rate) under the whole family of stable distributions, irrespective of their asymmetry and tail index. While parametric stable-likelihood estimation, due to the absence of a closed form for stable densities, is quite cumbersome, our method allows us to construct estimators reaching the parametric efficiency bounds associated with any prescribed values (α0,b0) of the tail index α and skewness parameter b, while preserving root-n consistency under any (α,b) as well as under usual light-tailed densities. The method furthermore avoids all forms of multidimensional argmin computation. Simulations confirm its excellent finite-sample performances. 相似文献
992.
Thomas Broberg Per-Olov Marklund Eva Samakovlis Henrik Hammar 《Journal of Productivity Analysis》2013,40(1):43-56
The main objective of this paper is to test the Porter hypothesis by assessing static and dynamic effects of environmental policy on productivity. According to the hypothesis, stringent environmental regulations have dynamic effects on firm performance, and these effects eventually generate profits that offset the adaptation costs. We extend previous analyses by using unique data on environmental protection investments in the Swedish manufacturing industry as a proxy for environmental stringency. These data enable us to separate environmental protection investments into pollution prevention and pollution control. This distinction is crucial since the hypothesis claims that it is investments in prevention that have positive dynamic effects on firm performance. To test the hypothesis, a stochastic production frontier model is estimated where firm inefficiency is a function of investments in environmental protection. In general, we find no support for the Porter hypothesis within the time frame of our study, indicating that environmental regulations lead to efficiency losses. This result is even stronger in the harshly regulated pulp and paper industry. 相似文献
993.
Thomas Brekke 《Entrepreneurship & Regional Development》2013,25(3-4):202-218
This paper describes a case study of path-dependent industrial development in a specialized medium-sized region characterized by a specialized high-tech industry cluster, located near Norway's capital, Oslo. The case study examines the path-dependent process of new industry arising from technology-related industries through three main branching mechanisms: entrepreneurship, mobility, and social networks. More particularly, the study explores the extent to which regional branching mechanisms relate to different path-dependent processes of path extension, path renewal, or path creation. The case study of industrial development in a medium-sized region that critically examines the concepts of path dependence, and argues that specialized medium-sized regions follow different path processes from core regions due to regional branching that does not happen automatically but instead may require policy action and external investment to avoid stagnation or negative lock-in. 相似文献
994.
Thomas Hall Thompson 《Journal of Economics and Finance》2013,37(2):159-172
This study examines the influence of several ex-ante factors on three-year market-adjusted returns of two-stage carve-out combinations from 1988 to 2006. We observe that several factors maintain their significance over a three-year period after equity carve-out ex-dates. Also, we report that, contrary to Vijh (J Bus 75(1):153–190, 1999), negative three-year carve-out returns are statistically significant. In addition, we note that negative combination carve-out/spin-off three-year returns are higher than those of carve-outs acquired by third parties or reacquired by their parents. Moreover, we observe that our independent variables explain 14.56% of the multiple regression three-year returns for carve-outs. Also, our negative correlation of three-year returns with initial period returns supports the “leaning against the wind” hypothesis of Loughran and Ritter (Rev Financ Stud 15(2):413–443, 2002). In addition, our results for the post-bubble period (2001–2006) provide an extension of the changing issuer objective function noted by Loughran and Ritter (Financ Manage 35(3):23–51, 2004) for IPOs and Hogan and Olson (J Financ Res 27(4):521–537, 2004) for equity carve-outs. 相似文献
995.
Abstract This article presents a case study of a social marketing intervention, developed as an innovative action research project for a Fire Service, to tackle the public service challenge of reducing the incidence of deliberate countryside fire-setting in certain communities. The case demonstrates the effectiveness of a social marketing approach to tackling an anti-social behaviour that had become a local social norm which conventional education-based campaigns had failed to change. The case also explores unexpected impacts that applying a social marketing approach had on the sponsoring Fire Service, acting to transform certain aspects of its operations and culture. 相似文献
996.
Principals who delegate tasks to agents face the perennial challenge of overcoming agency problems. We investigate whether feelings of ownership among senior managers in the absence of formal ownership can align agents' interests with those of principals, thus turning agents into psychological principals. Using a moderated mediation model, we find that psychological ownership is positively related to company performance through the mediating effect of individual‐level entrepreneurial behaviour. We also find that the effect of psychological ownership on individual‐level entrepreneurial behaviour and, ultimately, company performance is weaker for high levels of monitoring compared to low levels. These findings offer important contributions to agency, psychological ownership, and entrepreneurship literatures. 相似文献
997.
Thomas Jønsson Hans Jeppe Jeppesen 《International Journal of Human Resource Management》2013,24(1):78-93
This study contributes to the debate about whether teamwork facilitates or constrains the single team member's autonomy at work. We investigate whether team autonomy can explain employees' individual autonomy, the teams' informal influence on its members and employees' desire for either individual or team influence. Questionnaire data were collected among employees in four Danish companies from different industries with various types of team organization: permanent, project-based and mixed teams. The results of the multiple regression analyses show that team autonomy is positively associated with individual autonomy, which is neither moderated by the team's ability to make the employee feel responsible nor by team support. Team autonomy is positively associated with facilitative social influence, i.e. team reward, team support and we find a negative association between team autonomy and team coercion. Moreover, employees who experienced more team than individual autonomy wanted their teams to control more work issues compared to employees who experienced lower team than individual autonomy. 相似文献
998.
Flora F.T. Chiang Irene Hau-Siu Chow Thomas A. Birtch 《International Journal of Human Resource Management》2013,24(15):2762-2777
This study explored the state of human resource (HR) outsourcing in the Asian context, a particularly important subject given its rapid proliferation in Europe and North America, the inconsistent and limited evidence from prior research, and its strategic importance to the human resource management (HRM) function. Drawing on both quantitative and qualitative data and the transaction cost, resource-based, and institutional perspectives, we found that although respondents were generally favourable towards outsourcing, that in practice its adoption and diffusion were in a nascent stage in Hong Kong. Decisions to outsource were, by and large, incremental and experimental and influenced by a range of contextual factors (e.g., availability of in-house expertise, skills and creativity, strategic priorities, legislation (coercive), availability of external service providers, and industry and peer (mimetic) influence). Despite considerable pressure to cut costs, instead of outsourcing in the first instance, firms placed greater emphasis on maximising internal resource utilization (insourcing). Implications for practice and suggestions for future research are also provided. 相似文献
999.
Abstract From 1949 through 1979, China had no insurance industry, as the state self-insured. Government policy was cautious and growth slow for the next 15 years, but since the early 1990s the pace of policy change has accelerated and the industry has grown at more than twice the gross domestic product. Nevertheless, the industry's development and market penetration, particularly in general insurance, remains extremely low by international standards, and continues to be retarded by a mix of forces. This paper examines the drivers for and against the long emergence of China's insurance industry, followed by a projection of the future development of the industry in China. 相似文献
1000.
The moderating role of work contracts on the relationship between human resource management (HRM) and the self‐reported performance of 1,311 permanent and 924 temporary employees across three sectors was studied using a multilevel design in 103 organizations in three European countries. The HR practice examined was training and its allocation to the different workforce groups. The relationship between training for permanent employees and performance was moderated by work contract as well as country. In the Spanish sample, the performance of temporary employees was more negatively related to training for permanent employees as compared to the Dutch and the Swedish sample. Unexpectedly, in the Dutch sample, training provision was negatively related to the workforce group it was provided for. It is the temporary employees that seemed to be the cause of the interactions, underlining the call for special treatment of this workforce. Results indicate a considerable role of the interplay of job dependence and labor market conditions. © 2014 Wiley Periodicals, Inc. 相似文献