相空间中二阶非完整力学系统的Lie对称性与守恒量

研究相空间中二阶非完整力学系统的Lie对称与守恒量．首先利用系统运动微分方程在无限小变换下的不变性建立Lie对称的确定方程和限制方程，得到Lie对称的结构方程和守恒量；其次研究上述问题的逆问题；最后举例说明结果的应用．     

相平衡与CO2在水中的扩散速率--CO2排水集气法

根据相平衡等的有关计算可知，常压下CO2溶于水的过程为物理吸收，CO2的饱和水溶液为稀溶液，而且溶液里碳酸的生成和电离可以忽略不计。CO2在水中的扩散系数非常小，其数量级为10^-5cm^2／s，在CO2排水集气法操作中，CO2气体不被水吸收。     

低纯度Gd制成的Gd5Si1.8Ge2.2的磁热效应

实验中使用国产2N级金属Gd粉为原料，用电弧熔炼法在氩气气氛中制备了Gd5Si1.8Ge22合金，并通过X射线衍射仪和超导量子磁强计分析手段对合金的性能进行测试和分析．发现合金没有重现一级磁相变和巨磁热效应，这是由于国产2N级Gd中杂质等因素时磁相变、磁热性能产生了重要影响，导致一级磁相变的破坏及磁热效应的大幅度下降．     

对羧基苯偶氮硫代若丹宁固相萃取光度法测定烟草及其添加剂中的汞

研究了对羧基苯偶氮硫代若丹宁 (CPATR)与汞的显色反应,在pH为3.5的醋酸-醋酸钠缓冲介质中,吐温-80存在下, CPATR与汞反应生成2:1稳定络合物,该络合物可被Waters Sep-Pak C18小柱固相萃取,用氮-氮二甲基甲酰胺(DMF)洗脱后用光度法测定,在洗脱液介质中,λmax＝535 nm,体系摩尔吸光系数达8.70×103 m2/mol. 汞的质量浓度在0.05～4.0 mg/L内符合比尔定律. 该方法可用于烟草及其添加剂中汞含量的测定,结果满意.     

优化问题的新步长法则

The step-size procedure is very important for solving optimization problems. The Armijo step-size rule, the Armijo-Goldstein step-size rule and the Wolfe-Powell step-size rule are three well-known line search methods. On the basis of the above three types of line search methods and the idea of the proximal point methods, a new class of step-size rules was proposed. Instead of a single objective function f, f ＋1/2（x - xk）^TBk（x-Xk） was used as the merit function in iteration k, where Sk is a given symmetric positive definite matrix. The existence of the steplength for the new rules was proved. Some convergence properties were also discussed.     

20℃时MgSO4-C2H5OH-H2O三元体系的相平衡研究

测定了20℃时MgSO_4-C_2H_5OH-H_2O体系等温平衡溶解度及饱和溶液的折光率和密度,且绘制了相图.用多元线性回归程序对折光率、密度和MgSO_4的溶解度与液相中乙醇含量之间的关系进行关联.体系没有产生分层现象,得到的平衡固相皆为无水盐,没有新化合物或水合物生成.     

Global Social Responsibility: Developing a Scale for Senior High School Students in Japan

This research was conducted with the aim of clarifying a concept of “global social responsibility.” A total sample of 395 senior high school students in Japan responded to a pool of items mostly adapted from a scale developed by Starrett (1996) and provided additional data concerning their social experiences. The data were used in the development of a Japanese version of the Global Social Responsibility (GSR) scale. It was found that “global altruism,” “active involvement with society,” and “understanding of interdependence” constituted a construct of global social responsibility. It was also found that females, those who discussed social problems with their family, those who revealed a high awareness of responsibility and those who had multiple experiences of volunteer activities for community service showed high GSR scores. The scale provides both an awareness of the concept and a measure for determining levels of global social responsibility. Counseling professionals are encouraged to consider their roles from a global and social perspective, with the notion of responsibility being seen as central to the concepts of freedom and personal development.     

Improving quality of the child care environment through a consultancy programme for centre directors

This study examined the effects of a newly developed on-site consultancy programme to improve global quality of the child care environment in non-parental child care centres for 0- to 4-year-old children as measured with the ITERS-R/ECERS-R. Using a randomised controlled trial with a pretest, posttest, and follow-up test, we compared 35 experimental group with 33 control group. The consultancy programme comprised three consultations in total. Analysis on the items that were specifically targeted during the consultancy showed a significant improvement on these targeted items between pretest and posttest and between posttest and follow-up. The effect of the consultancy programme on the total scores (including the non-targeted items) was not significant.     

三相异步电动机断相保护选择探讨

小型三相异步电动机的断相保护方法，不少刊物都有过介绍。此处仅根据我单位的实际情况和使用经验，介绍根据不同情况采取的三种较为有效的方法。     

思维导图在高中物理教学中的应用研究

教师通过恰当运用思维导图进行物理教学,可以将知识进行有效整理、总结、归纳,方便学生记忆和梳理各知识板块之间的关系。文章探讨借助思维导图简化备课步骤、整合课程内容、提高教学效率、促进课堂互动、引发学生思考的有效途径,并从学生学习的角度指出思维导图的应用方向。