Estimating chance reproducibility in Guttman Scaling

A definition of reproducibility in Guttman Scaling and two chance measures of reproducibility are suggested. The first measure assumes that the items are independent. The second method assumes nonindependent items and fits respondent and item margins by an iterative method used in fitting log-linear models. Chance reproducibility is conceptualized in terms of assumptions about respondent variability.     

Seasonal forcing on the dynamics ofClethrionomys rufocanus: Modeling geographic gradients in population dynamics

We interpret gradients in population dynamics of the gray-sided vole from the southwestern part of the island of Hokkaido to its northeastern part within the framework of a phenomenological model involving the relative length of summer and winter. In Hokkaido, as in other northern regions, both spring and fall is considered as short transition periods between the two main seasons — summer (the primary breeding season) and winter (the non-reproductive or secondary breeding season). We show that the geographic transition in dynamics may be understood as the combined consequence of different patterns of density-dependence during summer and winter, and geographically varying season lengths. Differences are shown to exist between summer and winter with respect to strength of density-dependence. Direct density-dependence, in particular, is stronger during winter than during summer. A model is presented to show how relative lengths of seasons can induce both stable and periodically fluctuating population dynamics. The results are compared and contrasted with what is otherwise known about the gradient in rodent dynamics in Fennoscandia.     

Communicating future water needs to an at-risk population: lessons learned following defeat of the Applewhite Dam and Reservoir Project in San Antonio,Texas

San Antonio, Texas, the seventh largest city in the United States, has experienced steady population growth, since the “boom” of the 1960s. Projected water shortages due to this growth were realized as early as the 1970s by city leaders and south-central Texas regional development decision makers. To reduce dependence on the already over-taxed, Edwards aquifer, a solution, the Applewhite Dam and Reservoir Project, was developed with wide acceptance by federal, state, and city leaders who regarded the project as a necessary measure for regional growth and development. However, opposition by taxpayer and environmental groups led to referendums of 1991 and 1994 in which voters blocked construction of the dam and reservoir leaving the city with limited options for water provision. This case study investigated the factors which led to a clear mismatch in communication between decision makers—those who were aware of the actual and quantifiable risk to the region in terms of reduced water supplies—and the general public, a population that did not have complete and/or adequate knowledge of their actual risk regarding future water shortages, nor, of solutions being developed, such as the Applewhite project. The findings from this case study indicate that when municipal leadership fails to adequately communicate risk regarding resource shortage to an affected public, as well as, openly planned solutions, that voters are likely to underestimate future impacts of water shortages, heed last-minute opposition, and reject long-standing, publicly proposed projects. The intent of this research is not to support either side in the Applewhite controversy, but to shed perspective on the process of adequately and effectively communicating future water needs to an at-risk population. Decision makers in cities across the United States who are faced with solving problems of limited resources needed by a large populace may be informed by the results of this research.     

扬州市邗江区乡镇预防保健体制改革两种模式的比较研究

扬州市邗江区1999年对全区21所乡镇卫生院进行了产权制度改革。改制前3年,实行“医防合一”体制,从2002年起实行“医防分设”体制。文章采用定性调查和定量调查相结合的方法,比较改革前后农村卫生体系和农村预防保键资源、组织机构、服务效率、监督执法力度、农民满意度等方面的变化。研究表明,“医防分设”是必由之路,为进一步改革和完善预防保健体系提供了依据。     

对当前工业设计教学模式的思考

近年来,有些院校在工业设计专业的新教学计划中提出了“课程环”的构想。这样的教学模式试图把先前自成一体的课程有机地融解在数个相对的小系统中,进而形成以课题设计为中心的大系统。而过去的“三段式”教学模式则是以各门独立课程为中心的。在“三段式”教育下,有的学生几乎每门功课都优秀却做不出好设计来,更有甚者不懂设计程序而无法完成完整的设计。这种教学模式存在诸多弊端。     

逻辑的观念与理论——中国逻辑史研究的两个重要因素

“中国历史上是否存在逻辑学”是国内逻辑学界长期争论的问题。其中,“没有逻辑”说还分为绝对论者和相对论者:绝对论者认为中国古代没有任何形式的逻辑;相对论者认为中国古代虽然没有西方意义上的逻辑,但只有非形式逻辑。之所以学者们在此问题上争论不休,是由于双方对什么是逻辑有不同的理解。在进行中西逻辑学比较之前,首先要确定一种统一的逻辑观念,因为逻辑观念是逻辑理论得以形成的基础。     

"人力资本论"中的劳工迁移观分析

二战结束后,随着美国科技革命的展开和经济结构中服务业的崛起,美国从20世纪50年代开始出现了经济繁荣和社会失业率并行攀升的趋势。对此,以西奥德.舒尔茨为代表的经济学家通过实践和潜心研究,提出了颇有影响的人力资本论,其中关于劳工迁移的精辟论述具有很强的历史和现实性价值,但是,其中的局限性也十分突出,尤其是强调区域工资差异的论述似有以偏概全之嫌。无论是在理论上,还是近现代史上的跨国移民以及二战后美国以劳工为核心的人口流动,都证明了该理论中的局限性。     

实现男女平等构建两性和谐发展的社会

男女两性协调发展在构建和谐社会中有十分重要的意义,两性协调发展可促进经济、社会协调发展,有利于人的全面发展,同时女性发展得到重视,有助于从根本上提高民族素质,推动三大文明建设。但实际生活中,实现男女平等、协调发展既面临传统与现实的挑战,又面临经济全球化、城市化、工业化进程带来的机遇。本文在分析这些情况的基础上,提出解决男女协调发展的途径。     

北魏、北周、唐时期追祖李陵现象述论——以"拓跋鲜卑系李陵之后"为中心

本文通过考述北魏、北周、唐时期出现的诸多追祖李陵的现象,以"拓跋鲜卑系李陵之后"为讨论中心,从民族融合与文化整合的视角出发,来重新梳理和解析此类深为学界所质疑的追祖现象.本文还结合时代背景,将李陵视为一种胡汉杂糅的文化象征符号,探讨了其在北方游牧人与汉地农耕民接触与交往中所扮演的角色.     

构建江西城乡劳动力市场体系若干问题的研究

劳动就业是我国经济社会发展过程中面临的战略性问题。构建江西城乡劳动力市场体系,必须立足江西实际,加强宏观指导,转变政府职能,注重制度创新,增加市场弹性,培育劳动力市场价格形成机制,健全和完善各项经济社会政策,以促进江西经济社会的和谐发展。