多元线性回归方程及其应用

通过建立多元线性回归的数学模型,利用最小二乘估计得到正规方程组并进行相关性检验,从而解决相关实际问题。     

Race and Population Change: A Longitudinal Look at Cleveland Neighborhoods

This paper investigates the relationship of racial composition to neighborhood population change from 1910 to 1990 in the Cleveland metropolitan area. To better understand the long-term dynamics of urban neighborhood change, we focus our analysis upon the longitudinal relationship of race, socioeconomic status, and life cycle stage to changes in neighborhood population densities. First, we find that the more established neighborhoods of the African-American community have experienced dramatic declines in population since 1950, a pattern that represents a clear change from the earlier part of the twentieth century. Second, population loss is experienced through a variety of mechanisms, including the demolition of dwellings, the increase in housing vacancy, and the decline of household size. Third, much of this population loss should be interpreted within the context of high economic distress, occurring most frequently in older African-American communities. Over time, economic distress appears to be more important than race in and of itself in leading to the loss of neighborhood populations.     

均线形态组合在证券分析中的应用

应用结构模式识别的方法建立多阶均线形态组合序列通过对股市历史数据的变换和分析考查各形态组合序列对应的盈利和亏损概率建立新的证券投资分析方法即均线形态组合预测法其优点是可以部分弥补传统技术分析中的滞后性和不确定性能根据市场的变化及时调整相应的参数指标有效提高预测的成功率并易用计算机作出识别     

英语成绩与焦虑特性的相关性研究

文章以南华大学外国语学院英语专业二年级 4 4名本科生为对象 ,用SPSS统计软件包分析研究了学生英语成绩及若干专业技能与焦虑特性的相关性。研究结果表明 :( 1)学生英语成绩与焦虑特性呈中度负相关 ;( 2 )在听写、听力、阅读、写作这四项单项能力方面 ,听写和听力是与焦虑特性相关性最高的两个 ,而完形填空、词汇与结构与焦虑特性不相关。     

关于人力资本出资的一点思考

近年来 ,一些学者提出 ,人力资本与物质资本一样 ,可以作为企业资本的一部分出资 ,以此为促进高科技企业的发展创造条件 ,使风险投资推动高科技产业的发展。我们认为 ,人力资本出资存在一系列障碍 :首先 ,人力资本自身具有不确定性和难以计量性 ;其次 ,人力资本出资无法解决企业责任的承担问题 ;最后 ,人力资本出资对于高科技企业的发展也并没有太大的实际意义。     

网络零售配送系统最优运作成本的分析

针对配送运作成本关键部分棗平均运距作出的估计,在车辆路径问题渐进最优理论的基础上,建立了一个平均运作成本最优的规划模型,从经济的角度对运作策略作了简要分析。与其他规划模型不同,新建模型考虑了平均水平的概率特性及众多实际因素,因而具有较好的实用性。     

法律的经济分析:历史唯物主义法律观的生成逻辑及现实启示

马克思通过对法律进行经济分析 ,寻找到了启开法律奥秘之门的钥匙 ,创造性地形成了经济基础决定法律上层建筑的历史唯物主义法律观。回溯马克思当年探求真理的艰辛历程 ,剖析这位探索者的探索道路 ,对于准确把握历史唯物主义法律观的精要 ,并指导我们今天市场经济和知识经济条件下的法治建设 ,具有十分重要的理论意义和现实意义。     

Towards a Cultural Analysis of the Modern Family: Beyond the Revisionist Paradigm in Japanese Family Studies

Under the influence of the "new history of the family" of the past few decades, a revisionist view of the "modern family" has emerged among family theorists in Japan. In spite of the significant merits of this new paradigm, I have argued that the failure of its proponents to address certain theoretical and presuppositional issues has discouraged a cultural analysis of the modern family. In recent years, one of the foremost theorists to attempt to bring cultural analysis fully into sociological discourse has been Jeffrey Alexander. I have drawn extensively on Alexander's discussion of Durkheim's later thought as the key to a cultural program in the field of sociology. In doing so, I have suggested that one effect of the transition to modern society is the sacralization of what Durkheim termed the "domestic order". Furthermore, in considering the mechanism by which the central emotional axis of the family comes to revolve around either the parent–child bond or the conjugal bond, I have postulated the existence of a "sacred" dyad—in the Durkheimian sense—within the family unit.     

论化工类研究生《仪器分析》课程教学体系的建设

分析了化学工艺类研究生《仪器分析》课程教学现状和教学实施过程中存在的问题 ,针对教学内容、教学方式及教学考核提出了相应的解决方案和建议。     

郑州高校余暇体育现状调查分析

余暇体育作为校园生活方式迅速兴起,是21世纪高校体育发展的趋势,是学校体育的组成部分,它与教学合拍,以其自由度和项目兼容量构成了学生休闲生活的重要内容。开展余暇体育应以自发组织的小型活动为主,以学生参与为宗旨。