局部平稳部分线性面板数据模型的统计推断

部分线性模型是一类非常重要的半参数回归模型,由于它既含有参数部分又含有非参数部分,与常规的线性模型相比具有更强的适应性和解释能力。文章研究带有局部平稳协变量的固定效应部分线性面板数据模型的统计推断。首先提出一个两阶段估计方法得到模型中未知参数和非参数函数的估计,并证明估计量的渐近性质,然后运用不变原理构造出非参数函数的一致置信带,最后通过数值模拟研究和实例分析验证了该方法的有效性。     

民办幼儿园教师专业素养培训方式实验研究

随着现代教育的发展，提升幼儿园教师专业素养已成为促进学前教育发展的必然要求。以探究民办幼儿园教师专业素养为视角，提出通过干预行为提升教师专业素养水平的构想。实验随机选取成都市某民办幼儿园的20名教师为实验组，再选取与其办园环境、办园背景相似的另一所民办幼儿园的20名教师为对照组，对实验园教师的专业理念与师德、专业知识、专业能力3个维度进行干预。实验结果表明：与对照园相比，实验园教师的专业能力提升显著；与实验园实验前后相比，教师在专业知识、专业能力维度及专业素养总体水平方面均有提升。对教师培训的具体建议为：（1）单一与混合相结合的培训方式对提升民办幼儿园教师专业素养总体水平有现实意义；（2）民办幼儿园教师专业知识的提升需理论培训与自主学习相结合；（3）专家"现场诊断-指导式"培训方式对提升民办幼儿园教师专业能力有显著作用。综上，建议民办幼儿园在了解本园教师专业素养水平的基础上，针对教师专业素养的不同方面，分别采取不同的有效培训方式。     

Mentorship experiences during registrar training: reflections of Black African specialists in the Western Cape

In order to meet the significant staffing challenges to health care provision in South Africa, the need to support the training and retention of Black medical specialists has been identified. This small qualitative study aimed to explore experiences of mentorship among a group of Black medical specialists in hopes of understanding the value and potential challenges that these relationships raise. Ten Black medical specialists were interviewed about their experiences of being mentored during their registrar training. The interview data was analysed using discourse analysis, and the results comprise of three main themes, namely: Difficulty accessing mentorship, a lack of Black and/or female role models and finally, experiences of feeling excluded from soft networks. The experiences explored in this study indicate the need for open dialogue within the mentorship dyad regarding certain taken-for-granted assumptions surrounding race, so as to aid the provision of more effective and satisfying mentorship outcomes.     

历史变局、国家兴衰与发展之路——三次千年变局叠加下的中国特色社会主义发展道路

每当先进的发展制度开始取代落后的发展制度时，整个世界格局就会进入重大的转换阶段。在中国五千年的发展历史中，有两次重大的历史变局完全改变了中国历史发展轨迹并深远地影响了当前中国的发展模式。新时代下的中国作为前两次历史变局影响的客体，曾经既是先进发展制度取代落后发展制度的受益者，也经历过作为落后发展制度主体而被先进发展制度冲击的过程。目前世界正处于第三次先进发展制度与落后发展制度交替的历史变局阶段，作为第三次重大历史变局的主体，在三次千年历史变局叠加的背景下，能否有效地认识、适应并改造利用前两次历史变局的经验与教训，构建系统性、科学性、可行性、领先性的中国特色社会主义制度，将决定中国在本次历史变局中能否顺利成为先进发展制度的主体从而实现民族复兴。     

Progressive censoring with fixed censoring times

In this paper, we revisit the progressive Type-I censoring scheme as it has originally been introduced by Cohen [Progressively censored samples in life testing. Technometrics. 1963;5(3):327–339]. In fact, original progressive Type-I censoring proceeds as progressive Type-II censoring but with fixed censoring times instead of failure time based censoring times. Apparently, a time truncation has been added to this censoring scheme by interpreting the final censoring time as a termination time. Therefore, not much work has been done on Cohens's original progressive censoring scheme with fixed censoring times. Thus, we discuss distributional results for this scheme and establish exact distributional results in likelihood inference for exponentially distributed lifetimes. In particular, we obtain the exact distribution of the maximum likelihood estimator (MLE). Further, the stochastic monotonicity of the MLE is verified in order to construct exact confidence intervals for both the scale parameter and the reliability.     

Confidence intervals,significance values,maximum likelihood estimates,etc. sharpened into Occam’s razors

Abstract

Confidence sets, p values, maximum likelihood estimates, and other results of non-Bayesian statistical methods may be adjusted to favor sampling distributions that are simple compared to others in the parametric family. The adjustments are derived from a prior likelihood function previously used to adjust posterior distributions.     

美国师德问责体系的结构、特点及启示——基于德克萨斯州的经验

美国德克萨斯州历来重视教育工作者的职业道德建设，建立了一系列教育工作者违规行为问责机制，形成了较为完善的师德问责体系。美国德克萨斯州的师德问责体系具有独特的结构与特征。颁布《教育工作者伦理规范》，使问责有法可依；设立专门机构，使问责主体明确；细化教师违规行为，使问责有据可凭；强调证据证词，使问责合理科学；重视结果多样，使问责责罚分明。这些对于促进我国师德问责的规范化、制度化发展有着积极的借鉴意义。     

师德建设在学风建设中的作用

高等学校加强师德建设和学风建设是全面贯彻党的教育方针的根本保证,是适应新时期发展的需要,是高等学校自身发展的需要,是学生成长和成才的需要。建设优良的学风关键在于建设一支优秀的教师队伍,而建设一支优秀的教师队伍的关键在于提高教师的道德水平。     

张之洞实业教育观之我见

实业教育观是张之洞教育思想的重要组成部分 ,它是张之洞与外洋抗争思想的直接结果之一。它以创办实业学堂、派遣留学生及倡导理论与实践相结合的教学方法为主旨 ;以培养近代农、工、商业人才 ,推动经济发展为目的 ,在中国近代历史上影响较为深远。