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161.
We extend a standard New Keynesian model to allow an analysis of “unconventional” dimensions of policy alongside traditional interest-rate policy. We find that quantitative easing in the strict sense is likely to be ineffective, but that targeted asset purchases by a central bank can instead be effective when financial markets are sufficiently disrupted, and we discuss the conditions under which such interventions increase welfare. We also discuss optimal policy with regard to the payment of interest on reserves. 相似文献
162.
沪深300股指期货的上市为股指期货跨期套利研究的实证分析提供了真实的数据基础。本文在对期货套利的概念和种类进行介绍的基础上,构建股指期货跨期套利模型,最后,以沪深300股指期货真实交易数据为基础进行了实证分析,结果显示,目前,国内股指期货市场存在较多的跨期套利机会,市场有效性缺失,并对此结果提出了相应的政策建议。 相似文献
163.
次贷危机爆发后,美联储为促进经济复苏,采取了扩张性财政政策和货币政策及非常规的量化宽松政策,向经济注入大量的流动性。现行的国际货币体系是以美元为主导的国际货币体系,美元作为国家货币充当国际货币使得位于中心的美国获得了铸币税,而其它国家则更多地承担了通货膨胀和金融危机的成本。当前美国量化宽松货币政策的溢出效应对中国的影响包括通货膨胀、人民币升值压力和外汇储备的损失。 相似文献
164.
本文在分析高校思想政治理论课实践教学的必要性和意义的基础上,总结自身的教学经验,提出问题与困惑,将实践教学作为"从量变到质变"过程进行了系统化探究。 相似文献
165.
This paper presents an application of quantitative network analysis. It examines rural development projects with respect to their structural and politico-administrative dimensions, including power relations, conflicts, multifunctionality and intersectorality. The network structures and relations of comparable IPRD and LEADER projects are analyzed. The LEADER project network is shown to be less hierarchical than the IPRD project network, although the LEADER network is not characterized by significantly simpler procedures or clearer policy content than the IPRD network. Information and contact are significantly greater, and conflict density is significantly lower in the LEADER network. Administrative intersectorality is higher in the IPRD project, while the multidisciplinarity and the multifunctionality are higher in the LEADER project. However, the LEADER project is not perceived as delivering its objectives to a greater extent than the IPRD project. The implications for process-oriented evaluation are discussed. 相似文献
166.
Nicolas Gerber 《Ecological Economics》2011,70(12):2275-2281
Biodiversity is widely recognized as a valuable natural asset to conserve. Yet biodiversity is often reported to be declining worldwide. Biodiversity measures can help evaluating it and conserving it, but need to be clearly defined and assessed. In this paper, I review several biodiversity measures and develop a new one, all based on a matrix of species-level dissimilarity data. The data can be used in its raw form, regardless of its origin (e.g. studies of morphological traits, DNA hybridization experiments…) or of any graphical representation. Then, I propose a two-step assessment of the measures. First, I assess them in terms of their deviation from a strict additive law determining the contribution of each species to the diversity of the set in an ideal setting. This setting refers to a case where the data exactly determines the hierarchical ordering of the species. Second, I assess the measures based on their compliance with a list of axioms. These axioms reflect basic mathematical properties regarded as desirable for diversity measures, such as their monotonicity in species and dissimilarities. Finally, I show the importance of applying the new quantitative assessment and the axiomatic approach together when selecting a dissimilarity-based diversity measure. 相似文献
167.
自从2008年金融危机以来,美国在采取第一轮和第二轮量化宽松货币政策失效后,又采取了扭曲操作和第三轮量化宽松货币政策来稳定和刺激经济,这一系列货币政策再带来美国经济气温回升的同时也带来了许多其他影响,本文从多角度多方面分析研究美国的量化宽松货币政策对美国经济及国际黄金价格的影响。 相似文献
168.
Laura Andreu 《Quantitative Finance》2013,13(5):819-830
This paper examines the ability of balanced pension plan managers to successfully time the equity and bond market and select the appropriate assets within these markets. In order to evaluate both market timing abilities in these balanced pension plans, we extend the traditional equity market timing models to also account for bond market timing. As far as we know, we are among the first to apply this multifactor timing model to investigate equity and bond market timing simultaneously. This performance evaluation has been conducted on two samples of Spanish balanced pension plans, one with Euro Zone and one with World investment focus. This allows us to decompose managers’ skills into three components: selectivity, equity market timing, and bond market timing. Our findings suggest that the average stock-picking ability of pension plans is positive. World schemes tend to have positive bond timing skills, while Euro Zone pension plans are on average not able to time equity or bond markets. 相似文献
169.
本文对《国际金融研究》2005~2010年的共计821篇载文进行了定量研究,通过对载文的研究内容、研究方法、基金资助、作者所在单位、合著情况、参考文献、被引频次等方面的统计分析,探析2005年以来我国国际金融研究的发展态势,并对今后国际金融研究的方向进行了展望。 相似文献
170.
Bruce E. Tonn 《Technological Forecasting and Social Change》2008,75(5):595-609
This paper presents a methodology for organizing and quantifying the results of environmental scanning exercises. The first step of the methodology is to develop a simple systems model whose components capture the essence of the problem context under study. Then, a scan identifies leads that affect one or more components. The impact a lead may have on a component is rated on a numerical scale for any number of time periods of interest. Lower and upper probabilities are estimated for each impact rating for each time period. Lower and upper expected impact scores are then calculated to provide a range of potential impacts over time. An exponential function is used to aggregate the lower and upper expected impact scores upon a component to produce lower and upper expected component changes. The methodology also allows changes in components to impact other components. The methodology was implemented to explore impacts of demographic and technological change upon the future of human and ecological health in the United States. 相似文献