全文获取类型
收费全文 | 3905篇 |
免费 | 25篇 |
专业分类
财政金融 | 507篇 |
工业经济 | 164篇 |
计划管理 | 714篇 |
经济学 | 834篇 |
综合类 | 16篇 |
运输经济 | 26篇 |
旅游经济 | 32篇 |
贸易经济 | 1092篇 |
农业经济 | 71篇 |
经济概况 | 260篇 |
邮电经济 | 214篇 |
出版年
2024年 | 43篇 |
2023年 | 37篇 |
2022年 | 32篇 |
2021年 | 50篇 |
2020年 | 76篇 |
2019年 | 84篇 |
2018年 | 195篇 |
2017年 | 183篇 |
2016年 | 195篇 |
2015年 | 129篇 |
2014年 | 165篇 |
2013年 | 484篇 |
2012年 | 154篇 |
2011年 | 172篇 |
2010年 | 205篇 |
2009年 | 164篇 |
2008年 | 167篇 |
2007年 | 126篇 |
2006年 | 92篇 |
2005年 | 85篇 |
2004年 | 79篇 |
2003年 | 75篇 |
2002年 | 90篇 |
2001年 | 64篇 |
2000年 | 72篇 |
1999年 | 46篇 |
1998年 | 39篇 |
1997年 | 26篇 |
1996年 | 28篇 |
1995年 | 21篇 |
1994年 | 27篇 |
1993年 | 24篇 |
1992年 | 22篇 |
1991年 | 25篇 |
1990年 | 20篇 |
1989年 | 22篇 |
1986年 | 16篇 |
1985年 | 19篇 |
1984年 | 20篇 |
1983年 | 26篇 |
1982年 | 25篇 |
1981年 | 23篇 |
1980年 | 16篇 |
1979年 | 18篇 |
1978年 | 12篇 |
1977年 | 12篇 |
1976年 | 21篇 |
1975年 | 16篇 |
1974年 | 14篇 |
1971年 | 13篇 |
排序方式: 共有3930条查询结果,搜索用时 0 毫秒
21.
Following the reform of energy sectors, some countries have used engineering norm models in incentive regulation of network utilities. In 2003, Sweden adopted this approach to regulation of electricity distribution networks. This paper examines whether the norm models represent the real networks and create incentives for performance improvement. We analyse data from 138 network concession holders between 2000 and 2007. The results show that norm models are not adequate representations of real networks. Also, utilities that perform better than their norm models tend to behave opportunistically. Finally, we find that private utilities respond more strongly to incentives. 相似文献
22.
23.
Previous evidence suggests that enrollment in post‐compulsory education increases (decreases) in cyclical downturns (upturns). However, little evidence exists on whether enrollment is successfully transformed into completed education. This paper adds to the literature by analyzing the relationship between completion of upper secondary education and regional unemployment using Norwegian regional panel data on students graduating from compulsory school between 1981 and 2004. We find robust evidence that completion rates are countercyclical. Our results suggest that poor labor‐market conditions when starting upper secondary education have a lasting effect and motivate students to stay in school and graduate. 相似文献
24.
Spatial statistical modelling of insurance risk: a spatial epidemiological approach to car insurance
Spatial models, such as the Besag, York and Mollie (BYM) model, have long been used in epidemiology and disease mapping. A common research question in these subjects is modelling the number of disease events per region; here the BYM models provides a holistic framework for both covariates and dependencies between regions. We use these tools to assess the relative insurance risk associated with the policyholders geographical location. A Bayesian modelling approach is presented and an elastic net is used to reduce the large number of possible geographic covariates. The final inference is performed using Integrated Nested Laplace Approximation. The model is applied to car insurance data from If P&C Insurance together with spatially referenced covariate data of high resolution, provided by Insightone. The entire analysis is performed using freely available R -packages. Including spatial dependence when modelling the number of claims significantly improves on the result obtained using ordinary generalised linear models. However, the support for adding a spatial component to the model for claims cost is weaker. 相似文献
25.
We explore the effects of uncertainty on a firm that can respond by modifying its investment or production schedule (or both simultaneously) to variations in output price. Investment may increase capacity and/or reduce costs. We consider a firm with finite resources.Our model uses option theory instead of the more traditional net present value framework. One of the early papers using this approach is Brennan and Schwartz (1985) in which an investment project to extract a finite natural resource is valued. In that paper, the value of the firm is a function of two state variables, the finite resource to be extracted (output to be produced in the future) and the commodity spot price. In order to maximize firm value, the manager can respond by modifying one control variable, the production level. In our model we handle instead three state variables (spot price, resources, accumulated investment) and two control variables (production rate and investment rate), and solve numerically.We obtain both the value and the optimal policy of a firm that has investment projects that increase capacity and/or reduce costs and illustrate optimal policies as resources and available investments decrease over the life of the firm. Firms may start by only investing, then invest and produce, to end only producing.We thank Scott Wo, the referee and the editor for their comments and suggestions. Cortázar and Lowener acknowledge the financial support from FONDECYT and FONDER. 相似文献
26.
27.
Hüseyin Akyildiz İbrahim Güngör 《International Journal of Human Resource Management》2013,24(8):1539-1556
Job evaluation's main aim is to establish a fair wage structure. Its main principle is ‘equal pay for equal work’. ‘Metal Industry Job Grouping System’ (MIDS) has been in the metal industry in Turkey for more than 20 years. The results of the practice of the system were measured by the Gini coefficient. By the findings, the average wages of the job groups are different enough from each other by their job groups in the way the wage of the bigger number job group is higher than the smaller except the job group two in the industry. However, the wages are far from the principle ‘equal wage for equal job’ within the same job itself. In addition, the workers make use of bonuses and social benefits. The effect of social benefits of them on the wage structure is positive within the same job group and negative between different job groups within the same company. Nevertheless, the effect of both bonuses and social benefits on the wage structure is negative between the companies because, between them they are different from each other. Job group and seniority affect the wage structure. Seniority has a socio-psychological self-producing dynamic. The distribution of seniorities within the same job group has negative effects on the wage structure. However, this fact for each worker disappears for the long term since the worker of today who has short-term seniority will be the one of tomorrow who has long-term seniority. Therefore, for each worker, the wage structure gets closer to the principle ‘equal wage for equal job’ within the same job group itself over time. 相似文献
28.
We examine a specific portfolio credit derivative, an Asset Protection Scheme (APS), and its applicability as a discretionary regulatory tool to reduce asymmetric information and help restore the capital base of troubled banks. The APS can be a fair-valued contract with an appropriate structure of incentives. We apply two alternative multivariate structural default risk models: the classical Gaussian Merton model and a model based on Normal Inverse Gaussian processes. Using a data set on annual farm level data from 1996 to 2009, we use the Danish agricultural sector as a case study and price an APS on an agricultural loan portfolio. We compute the economic capital for this loan portfolio with and without an APS. Moreover, we illustrate how model risk in the form of parameter uncertainty is reduced when an APS is attached to the loan portfolio. 相似文献
29.
Christoph Böhringer Brita Bye Taran Fæhn Knut Einar Rosendahl 《The Canadian journal of economics》2017,50(2):426-455
We investigate how, in an open economy, carbon taxes combined with output‐based rebating (OBR) perform in interaction with the carbon policies of a large neighbouring trading partner. Analytical results suggest that, whether the purpose of the OBR policy is to compensate firms for carbon tax burdens or to maximize welfare (accounting for global emission reductions), the OBR rate should be positive in policy‐relevant cases. Numerical simulations for Canada, with the US as the neighbouring trading partner, indicate that the impact of US policies on the OBR rate will depend crucially on the purpose of the Canadian OBR policies. If, for a given US carbon policy, Canada's aim is to restore the competitiveness of domestic emission‐intensive and trade‐exposed (EITE) firms to the same level as before the introduction of its own carbon taxation, we find that the necessary domestic OBR rates will be insensitive to the foreign carbon policies. However, if not only the Canadian carbon tax but also an equally high US tax is introduced, compensatory Canadian OBR rates will be up to 50% lower, depending on the sector and on US OBR policy. If the policy objective is to increase economy‐wide allocative efficiency (welfare) of Canadian policies by accounting for carbon leakage, the US policies will have only a minor downward pressure on desirable OBR rates in Canada. Practical choices of OBR rates hardly affect overall domestic economic performance; thus, output‐based rebating qualifies as an instrument for compensating EITE industries without a large sacrifice in terms of economy‐wide allocative efficiency. 相似文献
30.
Der Beitrag stellt Insurance-linked Securities (“ILS”) als Instrument des alternativen Risikotransfers dar und grenzt ILS von anderen Instrumenten des alternativen Risikotransfers ab. 相似文献