高校校园网络文化探析

随着大学校园网络的日益普及,网络文化成了校园文化的一个重要组成部分。网络文化对校园文化的影响是深刻而广泛的,如何对其善加利用,建设健康文明的校园网络文化,是一个亟待研究的课题。     

日本城市老年人的亲属人际关系网——以日本名古屋市为例

根据日本名古屋老龄化程度最高的中村区日吉学区调查的数据,分析了日本老年人亲属人际关系网的特征和影响老人亲属人际关系网的主要因素。结果表明,影响老年人亲属人际关系网的主要因素是居住距离和老年人的学历、家庭收入、居住面积等社会经济资源。即,生态学上的距离虽然是影响“社会人际关系维系型”和“社会人际关系松散型”的重要因素,但不会使亲属人际关系数量衰减。学历、家庭收入、居住面积等社会经济资源是影响亲属人际关系网规模增减的重要因素。     

制冷剂流量和风量对再循环蒸发器传热性能影响

蒸发器超倍供液系统中的制冷剂有较大流速,增加了液体制冷剂和蒸发管内表面的接触,从而改善换热,增大传热系数,提高蒸发器的效率。本文对再循环蒸发器制冷剂流量和配用风机的风量对蒸发器的净制冷量的影响作了理论计算分析,为合理设计再循环蒸发器提供了理论依据。     

通货膨胀冲击的财产再分配效应——基于中美两国的比较研究

本文利用微观调查数据研究了中美两国通胀冲击的财产再分配效应。本文的定量研究结果表明,通胀冲击将侵蚀中国家庭部门的财产,并进一步恶化家庭间的财产分布;而美国的情况却截然相反。从通胀再分配效应的视角出发,本文建议我国在制定货币政策时应当更加重视民生目标,逐步建立起多种形式的通胀补贴制度,以增强社会底层的通胀承受能力。     

Integrating public demands into model-based design for multifunctional agriculture: An application to intensive Dutch dairy landscapes

The contribution of agriculture to the welfare of society is determined by its economic, social and environmental performance. Although theoretical discussions can be found in the literature, few reports exist that integrate the social demand for multifunctional agriculture in the evaluation of the sustainability and the global welfare of society. This paper presents a methodology that combines economic valuation, integrated modelling, stakeholder analysis, and multi-criteria evaluation. It consists of three steps to determine: (1) social demands for multifunctional agriculture; (2) feasible technical alternatives available from the supply part of the market; (3) the net utility of alternatives for society measured as the change in social net benefit, i.e. the sum of changes compared to the current situation expressed in utility of market and non-market net benefits. Market net benefits are represented by their monetary value. Quality Function Deployment combined with Analytic Network Process (QFD/ANP) were used to estimate the non-market net benefits. The methodology is applied to the case study of a dairy-farming based agricultural landscape in the Northern Friesian Woodlands, The Netherlands. Social net benefit depended on land use, i.e. pasture management regimes on each of the agricultural fields and on presence or absence of hedgerows around the fields. Changes in market net utility were expressed in terms of changes for farmers, consumers and government. Changes in non-market net utility were expressed in terms of changes in landscape quality, nature value and environmental health for Dutch society as a whole, as estimated from European public surveys (Eurobarometer). The complete solution space defined by the market and non-market net benefits of landscapes with alternative patterns of land use was estimated to offer insight in the trade-off between market and non-market performance and enable selection of ‘icon’ landscapes to target or avoid. Improvement of the current landscape towards the social optimum would involve changes in pasture management resulting in higher gross margin for farmers, slightly relaxing current environmental restrictions, which could be reached at lower levels of subsidies in agri-environmental programs. In addition to such overall optimum the results demonstrate the trade-off between market and non-market benefits and the characteristics of current, utopian and dystopian landscapes. The approach provides an alternative to current economic valuation methods which focus on assessment of economic value as an input to analysis. Here, economic value emerges as the trade-off between market and non-market functions which is an output of the analysis.     

封闭式基金折价均值回归研究——基于协整分析

以我国仍在交易的25支封闭式基金为研究对象,利用每支基金从上市第2年到2010年12月的交易价格和净值的周数据进行实证分析。运用恩格尔-格兰杰两步法并进行Johansen协整检验,证实了我国封闭式基金折价存在均值回归现象。同时,误差修正模型分析结果显示,25支样本基金中有22支基金的交易价格与净值的误差修正项显著,说明封闭式基金的交易价格和净值的变动均会影响基金折价,其中交易价格变动对折价的影响更大。最后,提出我国基金投资者可通过投资折价较大的封闭式基金获得超额收益。     

河北省农村基础设施建设的收入效应研究

运用1995～2008年的数据,采用ADF检验、协整检验等对河北省农民人均纯收入和农村用电量、农业基本建设投资额及农民家庭平均每户的交通运输、仓储和邮政业原值进行了实证分析。结果表明三者对农村经济增长具有不同程度的推动作用。政府应该通过明确农村基础设施供给中各级政府的职责,加大农村基础设施尤其是生产性基础设施的投资力度等措施来促进农村经济的发展。     

China's New Role in the International Financial Architecture

The rise of China is challenging the international financial architecture in a number of ways. This paper highlights three that are of critical importance: the challenge of absorbing massive Chinese savings; the incorporation of China into a cohesive global financial safety net; and the organisation of China's participation in funding the demand for international investment projects. The global financial architecture needs to be reformed. But what role should China play? The paper defines the options open to China and the opportunities and barriers it will face. We argue that China can work with the established economic powers in reforming the existing architecture. At the same time, China seeks cooperation in building new institutions and organisations that fill gaps in the existing arrangements. But no matter how international financial diplomacy plays out in the near term, deep financial and economic reform at home will alone deliver China a central role in the international financial architecture. Domestic reform could also attend to some of the challenges that currently plague China's impact on the system. The success or failure of these domestic reforms will be at the crux of the strength or fragility of the international financial architecture in the years ahead.     

Determinants of the adjusted net saving rate in developing economies

The adjusted net saving rate, initially known as the genuine saving rate, was first published by the World Bank in the late 1990s as a more comprehensive measure of national saving and one more indicative of sustainable development. The adjusted net saving rate incorporated not just physical capital depreciation, but natural capital depletion and environmental damage, as well as including some human capital formation. In this paper, using a cross‐section of developing economies for 2001–2006, determinants of the adjusted net saving rate are estimated. For comparison, the same determinants for the gross national saving rate are estimated. Also, a basic Solow growth model is extended to incorporate natural resources and to justify a more comprehensive measure of savings, such as the adjusted net saving rate, for modeling economic growth. The two measures of savings are then compared as determinants in estimations of economic growth. Understanding the determinants of the adjusted net saving rate is useful for policies to promote sustainable development.     

大股东的所有权与企业的投资行为研究

Jensen和Meckling早在1976年就指出股权结构影响企业价值,而这一过程是通过影响投资实现的,但是一直缺乏有说服力的经验结果的支持。本文以2004～2007年1039家上市公司共4156个观察值为研究样本,从第一大股东股权的视角出发,研究了股权结构与公司投资水平之间的关系。研究发现,中国上市公司第一大股东的持股比例与公司的投资支出之间存在“下降-上升-下降”的“倒N”型的非线性关系;进一步研究后发现,持股比例在10％～20％的区间投资水平达到最小值,在60％～70％的区间达到最大值。但是这种“倒N”型的非线性关系只存在于非国家控股的公司,当第一大股东为国家股时,这种非线性关系会变得不显著。本文的研究为治理当前我国企业普遍存在的非效率投资、提升企业价值提供了经验证据。