多维正态分布参数估计的损失函数和风险函数的Bayes估计

在N P(θ,Σ)和方差Σ已知情况下,给出了多维正态分布多维参数均值θ=(θ1,θ2,…,θΡ)估计的损失函数和风险函数的Bayes估计。     

A Model Tutorial Program for University and School Collaboration

The Teaching/Learning Centre (T/LC) located in the Jacksonville State University College of Education is an award winning, on‐campus, after school tutoring‐program for a diverse population of K‐12 children. While the overall intent of the T/LC is to provide a practicum for teacher preparation, the T/LC has increasingly become a community resource for improving academic achievement among area K‐12 school students. The T/LC practicum allows the preservice teacher to interact with children by individualising a one‐on‐one tutorial within the university setting under university supervision. Preservice teachers gain additional professional practice through communication with parents, guardians, teachers, and professors. Preservice teachers gain confidence and self satisfaction while learning to interact with students from varying backgrounds in a caring and supportive manner.     

煤炭资源开发带来的问题及对策——以山西省为例

煤炭资源的开采促进了我国工业发展,但是给社会经济可持续发展带来了一些突出问题,如产业结构单一、贫富差距拉大、环境恶化等。这些问题是惯性的发展思维、资源管理制度不足等多种因素造成的。实现资源开发和社会经济的持续发展,既要转变观念,增强转变发展方式的紧迫感,也要完善资源管理制度。     

指数分布的失效率的EB估计及收敛速度

本文主要针对指数分布的失效率在加权平方损失函数下导出了参数的Bayes估计,并利用核估计的方法构造了参数的EB估计,同时在适当条件下获得了其收敛速度O(n-2λ2s2(2s+1)(λs+1)).     

神性的失落与人性的异化——欧洲三部《变形记》比较

欧洲文学史上的三部著名《变形记》,描述主人公凭附物形,经历人世悲欢离合.本文从主人公变形原因和变形后的经历两个角度,对奥维德、阿普列尤斯与卡夫卡三部《变形记》进行综合比较,分析西方社会神性的逐渐失落导致的人性异化.     

关于我国现行《保险法》中受益人问题的法律思考

在人身保险合同中,受益人是保险合同利益的最终受益人,在理论和实践中占据重要地位。关于受益人的概念、受益人的资格、受益人的指定和变更、受益人受益权的丧失等问题在我国现行《保险法》中的规定虽然对以前的《保险法》进行了修改,但是仍有一些让人不易理解之处,将针对这些问题进行一些法律思考,旨在减少相关法律纠纷。     

Ethical and political dimensions of action research and lesson study: reflections from a research project on a controversial issue in Cyprus

ABSTRACT

As educational interventions that integrate death issues in the school curriculum are rarely designed, implemented and evaluated, our action research (AR) project aimed at investigating the complexities of integrating the concepts of loss and grief in the primary school curriculum of Cyprus. The purpose of this paper is to identify and analyze convergences and divergences between AR and lesson study (LS), as they emerged in our project. We particularly focus on the ways that AR served to legitimate ethically and politically those aspects of the project that constituted the experimentation of lesson plans on loss and grief. The AR and LS elements of our project functioned differently and served different purposes, and we speculate that this is not irrelevant to the controversial aspects of the lesson plans’ topic, namely loss and grief. The paper argues that it may be strategically important, for ethical and political reasons, to both demarcate and associate AR and LS, navigating between them, particularly if a controversial issue is involved.     

液压系统中液流压力损失的相关分析

分析液压系统中压力损失产生的原因,液流压力损失与雷诺数的关系,局部压力损失在不同管道下的计算;影响液流压力损失的因素,减少液压系统中压力损失产生的相关方法。     

希望的追寻与失落——对新世纪底层文学中焦虑话语的心理透视

底层文学已成为新世纪文学创作的一种趋向,作为一种异质性的文学创作逐渐引起批评界和理论界的关注。关注底层求生者,关注底层求生者的生存焦虑和身份焦虑,也成为底层写作者抒写的一种范式,注重从心灵的探讨以期寻求人性的思考,在关注底层求生者生存境况的前提下更注重从心理去捕捉他们希望的追寻与失落。     

县级电大学生流失的原因及对策

因为受经济、区域环境、学生主观等方面因素的影响,县级电大开放教育学生的流失率比较高。为了降低学生的流失率,县级电大应转变观念,建立开放教育的教学模式;加强新生入学教育;完善学习支持服务系统;强化服务意识和加强班主任工作管理;加强学习小组建设;调整教学计划和收费方式。