Perception of Ecological Risk to Water Environments

This paper examines lay and expert perceptions of the ecological risks associated with a range of human activities that could adversely affect water resource environments. It employs the psychometric paradigm pioneered in characterizing perceptions of human health risks, which involves surveys to obtain judgments from subjects about risk items in terms of several important characteristics of the risks. The paper builds on a previous study that introduced ecological risk perception. This second study employs a larger, more diverse sample, a more focused topic area, and comparisons between lay and expert judgments. The results confirm that a small set of underlying factors explain a great deal of variability in lay judgments about ecological risks. These have been termed Ecological Impact, Human Benefits, Controllability , and Knowledge. The results are useful in explaining subjects' judgments of the general riskiness of, and need for regulation of, various risk items. The results also indicate several differences and areas of agreement among the lay and expert samples that point to potential key issues in future ecological risk management efforts for water resources.     

Teacher–Child Relationships from Kindergarten to Sixth Grade: Early Childhood Predictors of Teacher-perceived Conflict and Closeness

This article examined general trends in teacher-reported conflict and closeness among 878 children from kindergarten through sixth grade, and examined early childhood characteristics that predict differences in initial levels and growth of conflict and closeness over time. Results indicated modest stability of teacher-perceived conflict and closeness through sixth grade, with relatively greater stability in perceptions of conflict. Levels of conflict at kindergarten were higher for children who were male, Black, had greater mean hours of childcare, had lower academic achievement scores, and had greater externalizing behavior. Children identified as Black and those with less sensitive mothers were at greater risk for increased conflict with teachers over time. Levels of teacher-reported closeness were lower when children were male, had lower quality home environments, and had lower academic achievement scores. The gap in closeness ratings between males and females increased in the middle elementary school years. Additional analyses were conduced to explore differences in teacher ratings of conflict between Black and White students.     

基于单片机AT89C51的全自动变频恒压供水系统

介绍了一种新型的变频恒压供水系统.该系统根据供水管网的用水情况,调整水泵投入台数及转速,实行全自动恒压供水,达到高效节能的目的;其水泵用变频器软启动,对电网无冲击,能延长水泵的使用寿命.     

晚唐五代时期金河黑河水系变迁与环境演变

汉代黑河(删丹河,或名张掖河,又名弱水)与北大河(金河,又名呼蚕水)交汇入注居延海,汉代以后直到唐代之前都没有记载.<元和郡县图志>记载两水分流,金河流注白亭海,张掖河流注居延海.敦煌文献记载晚唐时金河与张掖河交汇流注居延海,使居延海湖面出现一个恢复期.此外,金河和黑河流域地区居民结构变化、农业人口和用水量减少、黑河径流量增加也是居延海湖面增加的原因.     

从马克思到贝克：因“剩女”危机引发性别冲突的多维度比较分析

在社会转型与全球化语境下，“剩女”时代已经悄悄来临，性别冲突再次成为后现代社会人们热论的焦点话题。对于性别冲突问题的探究，同一国度的卡尔·马克思与乌尔里希·贝克皆有深刻的阐述。本文以“剩女”危机作为个案，阐述两位理论大师在性别冲突关注上的差异性，这对我们认识“剩女”危机有着重要的启迪。     

国际冲突：概念、类型与解决

国际冲突是国际行为主体之间经常发生的国际现象，是国际政治学研究的重要内容。本文对国际冲突的概念、类型与解决作了学术上的梳理、审视与辨识，以便为人们正确认识纷繁复杂的国际现象提供理论范式，为学科的进一步发展构筑框架基石。     

城市供水管网系统工况分析的研究

通过分析实际供水管网系统的特征，对管网工况分析所涉及的几个尚未解决的计算问题进行了研究，提出了用计算机进行工况分析的思路与框架，为管网运行调度及研究管网水质模型打下了良好基础．     

Boredom and social meaning

Meaning is necessary in social processes. An absence of meaning in an activity or circumstance leads to an experience of boredom. This is a restless, irritable feeling that the subject's current activity or situation holds no appeal, and that there is a need to get on with something interesting. Thus boredom emotionally registers an absence of meaning and leads the actor in question towards meaning. Boredom, then, is central to key social processes centered on questions of meaningfulness. Given the pervasive preconditions for boredom, release from boredom is a factor that explains characteristic social practices, including risk taking and intergroup conflict.     

Hands: Visible and Invisible

Theoretical work in linguistics, mathematics, and physics has created changes in academic problem formulation. This meta-analysis presents the nature of the new academic environment using precepts from New Historicism to suggest connections with the New Economy. The marketplace is often the court of last appeal in conflict resolution. This can be as basic as determining a fair price for a goose in a farmers' market to the disposition of pension funds in an international merger. Economist Lawrence Summers provides insights into theory and practice. Game theory leads from John Nash's equilibrium point to modeling in economics. A University of Chicago economist discusses the application of market reforms to Chile. He worked with Chilean economists called The Chicago Boys. A call for unification, which includes economics, follows.     

英伽登的文学作品存在论与现象学之关系新探

英伽登建构文学理论的最初动机源于与胡塞尔关于观念论——实在论的论争。他试图用对文学作品存在论的分析为解决这一问题提供一个可能的答案。其结论是,文学作品是一种非自主存在的纯粹的意向性对象,是一个由语音构造、意义单元、再现的对象、图式化观相和类时间结构这五个层次组成的异质的多层次构造。