非线性n阶微分方程多点边值问题

用上、下解方法研究了n阶非线性微分方程k点边值问题y(n)=f(t,y(n-2),y(n-1))y(i)(di)=ai(i=0,1,…,n-3),g(y(n-2)(t1),y(n-1)(t1))=0,h(y(n-2)(tk),y(n-1)(tk))=0(1)　　　解的存在性、唯一性。其中tj∈R,j=1,2,…,k;t1相似文献   

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.     

初论对话教学的本质内涵

对话教学作为现代教育的一种实践形态，是对传统教学秩序的重新建构，体现了一种全新的教学理念。而对话究其本质，它是人类生命存在的基本方式，是教育双方在平等互动基础上的积极建构，它以人的发展为着眼点，进行的是生命的建构。较之以往的教学，对话教学更符合人的规律，更贴近人性，因而在当今的教育实践中表现出了独特的价值。     

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.     

高职教育"两课"效益现状调查研究

实效性一直以来都是制约高职“两课”教学质量进一步提高的“瓶颈”。通过高职“两课”效益现状调查，分析原因，探求解决问题的途径。     

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.     

巴门尼德的时代超越

巴门尼德在哲学上首先提出“存在”一词，但我们对该词的理解却始终以物质性为基础，没能把握“存在本身”的意义。存在本身意味着开始概念思考，这是对宇宙论哲学的超越。在认识论上，巴门尼德提出理性是知识的来源。这是理性主义认识论的肇始，也是对其时代的超越。     

既滞后又超前的泛函微分方程解的存在性

讨论既滞后又超前的泛函微分方程解的存在性，其中有两个自变量偏差函数．该文运用分析方法给出了方程存在唯一解的充分条件。     

广义Sturm-Liouville问题正解的存在性与多解性

通过运用锥拉伸压缩型的不动点定理,对于广义Sturm-L iouville边值问题建立了正解以及n个正解的存在性定理.     

浅谈土钉墙的内部整体稳定性

本文对《建筑基坑支护技术规程》(JGJ120-99)和《基坑土钉支护技术规程》(CECS96:97)中有关土钉支护设计的计算方法,从土钉墙的内部整体稳定性分析这一个方面进行分析和比较,并给出了这两种规程的相对安全水平。