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张瑞  韩飞 《财务与金融》2013,(6):69-74,80
节能减排背景下,企业越来越重视可持续发展.作为高能耗、高排放的钢铁行业,更应做好低碳环保,推进制度创新,新能源开发,达到经济效益、社会效益和环境效益的统一.现行财务评价体系缺少对环境效益的评价,本文试图在原有的财务评价体系中加入节能减排评价指标,并通过具有代表性的钢铁企业-宝钢的财务指标,使用因子分析法,得出综合得分,并利用两配对样本非参数检验,比较加入节能减排指标前后企业财务绩效的变化,研究节能减排是否会对企业的财务绩效产生显著影响.  相似文献   
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The Elo rating system is one of the most popular methods for estimating the ability of competitors over time in sport. The standard Elo system focuses on predicting wins and losses, but there is often also interest in the margin of victory (MOV) because it reflects the magnitude of a result. There have been few theoretical investigations and comparisons of Elo-based models. In the present study, we propose four model options for an MOV Elo system: linear, joint additive, multiplicative, and logistic. Notations and guidance for tuning each model are provided. The models were applied to men’s tennis for several MOV choices. The results showed that all MOV approaches using within-set statistics improved the predictive performance compared with the standard Elo system, but only the joint additive model yielded unbiased ratings with stable variance in the simulation study. This general framework for MOV Elo ratings provide sports modelers with a new set of tools for building systems to rate competitors and forecast outcomes in sport.  相似文献   
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独立审计质量决定证券市场能否健康发展。目前上市公司与会计师事务配对完全是多因共谋的合作博弈结果,加之公司治理结构上的缺陷必然导致独立审计失效。影响独立审计质量的因素很多,可从上市公司与会计师事务所的配对机制视角来研究如何提高独立审计质量。  相似文献   
4.
Remittances provide an essential connection between people working abroad and their home countries. This paper considers these transfers as a measure of preferences revealed by the workers, underlying a ranking of countries around the world. In particular, we use the World Bank bilateral remittances data of international salaries and interpersonal transfers between 2010 and 2015 to compare European countries. The suggested least squares method has favourable axiomatic properties. Our ranking reveals a crucial aspect of quality of life and may become an alternative to various composite indices.  相似文献   
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Tradeoffs are an inherent part of many of the decisions faced by outdoor recreation visitors and managers. For example, decisions concerning the social carrying capacity of popular attraction sites involve potential tradeoffs between limiting visitor use to ensure a high quality experience and allowing high levels of visitor use to ensure that large numbers of visitors retain access to park and outdoor recreation resources. This study uses indifference curve analysis to evaluate the tradeoffs that visitors prefer to make between solitude and access at Delicate Arch, Arches National Park. Study findings facilitate more informed judgments by Arches National Park managers regarding appropriate recreation opportunities at Delicate Arch. Specifically, this research quantifies the tradeoff preferences of visitors to Delicate Arch and provides a theoretically and empirically informed basis for establishing a social carrying capacity for this site.  相似文献   
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In 2000, the Urban Institute paired African-American and Hispanic testers with whites and sent the pairs to visit lenders in Chicago and Los Angeles, in order to inquire about information on obtaining a home mortgage. In Chicago, African Americans and Hispanics systematically received less information and assistance than comparable whites; while in Los Angeles, the treatment of minority and white testers did not differ statistically from each other. Multivariate analyses for Chicago indicate that large lenders treat minorities more favorably than smaller lenders and that lenders with substantial numbers of applications from African-Americans treat African-Americans more favorably than lenders with predominantly white application pools.  相似文献   
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文章通过对韧性剪切带岩石的白云母成分、白云母60值和矿物组合的研究,阐述了韧性剪切带的形成条件。并提出了在推覆型韧性剪切带强应变带两侧岩石具有不同压力类型,俯冲侧压力值较高,仰冲侧温度值较高,两者彼此平行,构成变质双带。  相似文献   
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Within the linear model framework the problem of determining optimal designs for paired comparisons of alternatives which are described by a set of discrete attributes is considered under the constraint that the alternatives in a pair are only allowed to differ with regard to a certain number of attributes. Whereas in previous treatments of this problem it was assumed that all attributes possess the same number of levels, here the general asymmetric case is discussed. We provide a characterization of optimal designs and demonstrate how this can be used to derive a solution of the design problem for many situations of interest.  相似文献   
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通过对21家双重上市公司113个样本2000多条风险记录的两配对样本T检验发现,其境内外风险披露基本一致,对风险的描述基本一致,对风险的应对也基本一致。通过风险信息披露一致率、风险信息披露相同率与其影响因素的回归分析发现,规模、风险水平、资产负债率、账面市值比、境外上市地点、行业和年度会影响双重上市公司境内外风险信息披露的一致性。  相似文献   
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