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91.
    
Fama and French (FF, 2015) propose a new five-factor asset pricing model that adds profitability and investment patterns to the market, size and value variables used in FF (1992). Our purpose is to investigate this new model using an improved generalized method of moments (GMM)-based robust instrumental variables technique in a fixed-effects panel data framework. To test for measurement errors, we use a modified Hausman artificial regression. We also examine an augmented FF six-factor model that includes the Pástor–Stambaugh (PS, 2003) liquidity factor. Using the FF dataset, our GMM-based panel data approach leads us to conclude that the only consistently significant factor is the market factor.  相似文献   
92.
An auction-based approach (or MBI for “market-based instrument”) was used to purchase environmental services from landowners and to establish a long-term economic resource (forest plantations) in two catchments in the state of Victoria (Australia). The policy goal of the MBI was to encourage the conversion of cleared land to forest plantations. It was desired to achieve this while also reducing the amount of land affected by dryland salinity with minimum impact on water available for irrigation. Operationally, interested landowners identified areas on which they would be willing to establish forest plantations, and stated the amount of money they would require from the government to undertake plantation establishment; this constituted a landowner bid. The proposed planting area associated with each bid was processed through a quantitative hydrological model to estimate off-site impacts on dryland salinity and the change in water yield resulting from the conversion of individual non-forested areas to forest plantations. Landowner bids were then accepted or not based on the economic trade-offs among dollars requested by a landowner, reduction in water yield, and decrease in dryland salinity. To enable a comparison of costs, the MBI was independently trialled in two catchments. For both, the cost to government of a hectare of plantation and/or a hectare of salinity benefit was calculated a number of ways. Assuming the existence of a calibrated hydrological model, costs associated with distributing money via such an MBI were publicity, fieldwork, processing the bids through the model, probity, legal, and administration. In the Gippsland catchment, the total cost to establish forest plantations was $5340 per ha whereas it was $1635 per ha in the Corangamite catchment. No salinity benefit was obtained in Gippsland, but in Corangamite, if considered in isolation of the economic forest plantation benefit, the cost per hectare of salinity benefit was $5020.Operational aspects of the MBI are presented and discussed and a comparison is made to the expected costs of a conventional, non-science driven approach to landowner incentives.  相似文献   
93.
票据抗辩制度是从保护票据安全出发进行考虑的,从静态安全出发规定成立抗辨事由就得以抗辨;从动态安全出发对票据抗辨进行限制,以保护票据权利人的票据权利。票据抗辨事由的有效性是抗辩成功的关键,只有具备有效的抗辨事由,才具有抗辨的效力。有效的抗辩事由包括:对抗不特定债权人的法定事由、对抗特定债权人的法定事由、对抗特定债权人的约定事由、票据抗辨限制中对人抗辨事由因持票人的恶意而重新变为有效性抗辩事由。  相似文献   
94.
地勘基金是管理资源的经济手段   总被引:1,自引:0,他引:1  
温家宝总理在视察国土资源部的讲话中,将中央地质勘查基金定位为管理资源的经济手段,从根本上澄清了长期以来,一些业内人士习惯于将地质勘查基金等同于一般财政专项的认识。用好中央地质勘查基金至少要做到五个统筹.即:国内国外“两种资源、两个市场”的统筹;资源勘查周期与市场即时需求的统筹;国家意志和地方意识的统筹;公益性地质工作与商业性矿产勘查的统筹;行政手段与经济手段、法律手段的统筹。  相似文献   
95.
    
Environmental and conservation decisions are often complex, which results in complexity also in policy assessments. Conservation decisions have implications for different stakeholders and typically draw on multidisciplinary knowledge bases, incorporating natural, physical and social sciences, politics and ethics. Multi-Criteria Decision Analysis (MCDA) is a potentially important tool for supporting conservation policy decisions. This article reports a spatially referenced MCDA of policy instrument scenarios for conserving forest biodiversity in Southwestern Finland. The effects of the realistic policy instruments designed in dialogue with stakeholders included voluntary permanent conservation, enforced spatially concentrated permanent conservation, voluntary permanent conservation with active nature management, and voluntary temporary conservation. These instruments were compared by combining forest-owner survey, MCDA and ex ante impact evaluation. The main objective was to find the forest biodiversity conservation instrument that would produce the highest total benefit. The effects of the different instruments were evaluated with ecological, economic, social, and institutional criteria after a 20-year time period. The results showed minor differences between the instruments, with voluntary permanent and voluntary temporary conservation producing the largest total benefit. Despite the small differences, the analysis was robust in showing that voluntary instruments were more favourable than enforced permanent conservation.  相似文献   
96.
目前,全球电子支付产业正处于高速发展期,具有电子支付工具层出不穷、分工日益专业化以及向综合化发展与渗透的特点。纵观全球电子支付产业的发展历程和现状,可以看出电子支付产业发展的格局与趋势为:产业分工继续细化,在各分工领域基本形成了垄断竞争局面,但各领域的参与主体又在不断向其他领域进行渗透和融合。  相似文献   
97.
由于有关票据法的理论研究在我国刚刚起步,我国票据的规定只对空白支票予以认可,而没有涉及到 空白汇票、本票。我国票据法对空白票据方面的立法与西方各国票据法律制度相比还存在差距。鉴于票据在经 济中的重要地位,一方面应逐步完善空白支票的规定,另一方面,逐步将空白票据制度从支票领域扩展到票据法 领域,使我国票据法律制度尽快与国际接轨。  相似文献   
98.
本文从经济学角度分析了环境政策市场兼容工具的优缺点,指出市场兼容工具必须与法规工具结合,才能起到重要作用。  相似文献   
99.
大型仪器设备是高校学科建设和学科发展的必要条件,但目前使用效益不高。加强机制创新,强化立项、购置管理,调动实验人员的积极性,是提高大型精密仪器使用效益的重要措施。  相似文献   
100.
对当前货币调控工具选配的思考   总被引:3,自引:0,他引:3  
谢众 《金融研究》2008,(5):203-206
当前货币政策工具选配面临前所未有的复杂局面,不应放弃货币供应量目标,应继续采取数量型工具和价格型工具配合使用,将信贷规模控制作为当前货币调控重要环节,积极培育市场化基准利率,加快利率市场化进程,尽快实现货币调控方式的转变。  相似文献   
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