基于PCA/FCM的企业信用评价研究

针对我国企业信用评价问题的特点,文章分析了企业信用评价基本原则和主要影响因素,建立了企业信用评价指标体系。企业信用评价是一类包括一系列独立变量的分类问题,将主成分分析与模糊理论引入信用评价中,构建基于PCA/FCM的企业信用评价模型,这使得模型更接近人们的思维方式、指标赋权更为客观。应用该模型及SPSS11.0、MATLAB7.0对所选企业研究显示:该模型非常有效和实用。     

关于资产证券化及会计处理的探讨

资产证券化是金融创新浪潮中崛起的一种主流融资技术。它使贷款成了具有流动性的证券,盘活企业的存量资产,并优化其财务比率。然而,也相应地引发了一系列的会计问题。主要集中在转让方式或出售方式的会计确认、定价计量、会计报表合并及报表披露。     

Identifying crime generators and spatially overlapping high-risk areas through a nonlinear model: A comparison between three cities of the Valencian region (Spain)

The behavior and spatial distribution of crime events can be explained through the characterization of an area in terms of its demography, socioeconomy, and built environment. In particular, recent studies on the incidence of crime in a city have focused on the identification of features of the built environment (specific places or facilities) that may increase crime risk within a certain radius. However, it is hard to identify environmental characteristics that consistently explain crime occurrence across cities and crime types. This article focuses on the assessment of the effect that certain types of places have on the incidence of property crime, robbery, and vandalism in three cities of the Valencian region (Spain): Alicante, Castellon, and Valencia. A nonlinear effects model is used to identify such places and to construct a risk map over the three cities considering the three crime types under research. The results obtained suggest that there are remarkable differences across cities and crime types in terms of the types of places associated with crime outcomes. The identification of high-risk areas allows verifying that crime is highly concentrated, and also that there is a high level of spatial overlap between the high-risk areas corresponding to different crime types.     

河南省第三产业结构发展趋势预测与灰关联分析

笔者通过运用等维灰数递补模型对河南省第三产业产值、城镇居民人均可支配收入、交通运输仓储及邮电通信业、批发和零售贸易餐饮业、金融保险业、房地产业产值进行预测,认为河南第三产业结构自“十五”后趋于合理,房地产业、公交邮电通讯业、批零商业等日趋重要,相应的对策是应在保持这些产业优势的基础上,大力发展一些新行业,促进河南第三产业健康发展和人民生活水平持续提高。     

工业污染对环境质量的影响研究——基于时序数据的经验分析

本文选用1990～2005年期间我国六类能源的消耗指标,从时序维度考察了我国有色金属行业产量变化与其能源消耗之间的长期均衡关系和相互作用机制.研究发现,有色金属工业的产量增长并不必然导致环境的恶化,这一结论对我国现阶段的产业结构调整和政策取向具有一定的借鉴意义.     

Does too much government spending depress the economic development of transition economies? Evidences from dynamic panel threshold analysis

This paper investigates the relationship between government size and economic growth and determines the optimal level of government spending to maximize economic growth. The paper applies a dynamic panel data analysis based upon a threshold model to test the threshold effect of government spending in 26 transition economies over the period spanning 1993–2016. According to the analysis results, government expenditures have a threshold effect on economic growth, and there is a non-linear relationship depicted as an Armey curve in these transition economies. The findings indicate that a government size above the threshold government spending level adversely affects economic growth, while a government size below the threshold level has a positive effect. Furthermore, there is a statistically significant relationship between the two variables above and below that optimal level, even if we divide the sample into developed and developing countries. Our findings suggest that governments in transition economies should consider optimal government size at around the estimated threshold level to support sustainable economic growth.     

Business models and their relationship with marketing: A systematic literature review

The purpose of this paper is to identify the degree to which the marketing discipline has hitherto engaged with business model literature. The results of a systematic review of business model literature are presented and utilise both the citation counts and the h-index to objectively demonstrate the limited engagement that the marketing discipline has had with business model literature, and the limited degree that the discipline has influenced that literature. The key findings reveal a growing, but formative body of literature that, hitherto, has been dominated by non-marketing disciplines and which has only just begun to be addressed by present day marketing scholars. Using the most influential articles identified in the analysis, the paper concludes with a case for the empirical development of the business model concept with industrial marketing scholarship. Such development is argued to be grounded in the potential of open business models, co-created with multiple stakeholders in a supply chain and the end users of a value proposition.     

广州市用水量变化规律分析

结合广州市部分经验调度工况的结果,从宏观角度分析广州市的用水量变化规律及其影响这种变化规律的内在因素和外在因素。分析不同节假日、不同工作时段的用水量变化规律,为优化调度提供参考依据,最终达到节省能源消耗,提高生产效益和经济效益的目的。     

Gender and Network Formation in Rural Nicaragua: A Village case study

Abstract

This contribution examines the relation between gender and network formation in rural Nicaragua in 2007 and studies differences in the structure and contents of men's and women's networks. Such differences are relevant, as network theory suggests that structural characteristics – as well as the contents of networks – strongly influence the type and amount of benefits generated. Through the application of dyadic regression techniques, this study examines the determinants of the size and socioeconomic heterogeneity of individual networks. Research findings suggest gender segregation of networks and considerable differences in the structure and content of men's and women's networks. These differences relate to the gendered division of labor and to women's time poverty in particular. Our results are relevant in a context where policy makers increasingly consider social networks an important policy tool. We caution against a gender-blind alignment on existing social networks and argue for detailed mapping and unpacking of social networks through a gender lens.     

Evaluating flood risk management options in Scotland: A participant-led multi-criteria approach

The characteristics of flood risk management include complexity, large spatial scales, inter-temporal issues, plural values and conflicts of interests. It is argued that issues with such characteristics require public participation in the decision making process. This study builds on existing deliberative processes to develop a new participant-led multi-criteria method to evaluate flood risk management options in Scotland. The results show that participants preferred regeneration or planting of native woodland to other flood management options, and least preferred building flood walls and embankments. The design of the workshops allowed a rich dataset to reveal the thinking behind such results and provided a deeper understanding of why participants came to these conclusions.