平面热源法瞬态测量材料热物性的研究

简述了平面热源法瞬态测量材料热物理性质的基本原理,分析了快速法、脉冲法测量存在的问题。在此基础上,研究了材料热物性瞬态自动测量技术。测量实践表明:瞬态自动测量仪测量准确可靠,与用防护热板法测量的结果也符合得很好。     

分利秩序、治理取向与场域耦合：一项来自“过渡型社区”的经验研究

城镇化推进下的“过渡型社区”成为城乡分治的模糊地带,利益和资源的不断输入,使得其治理主体和治理场域发生重构。基层治理视角下的村民自治被“分利性”进行价值侵占。就如何厘清“过渡型社区”利益博弈秩序中,出现“弱治理强分利”与“强治理弱分利”两种分化样态的内在机理与演化过程。基于绍兴安置社区、武汉城中村两地治理实践经验表明,在“国家 市场 社会”三重结构化关系中,社会治理单元在“城乡转变”过程中呈现出分利制度异化、农民利益外显、基层治理弱化等具体表征。其中治理主体、治理对象在“国家 市场 社会”场域耦合中形塑出的治理取向,揭示出国家基层治理现代化转型的多元面向。     

MRF和GM模型高光谱图像地物标记

利用马尔可夫随机场和高斯混合模型构造了一种对高光谱图像进行地物标记的新方法。该方法利用PCA降维后的高光谱图像及其差分图像的先验信息建立高光谱图像的随机模型,并把最大后验估计作为地物标记优化的评判标准,用模拟退火算法实现地物标记。实验结果显示该算法是一种精确、高效、稳定的图形标记算法。     

辽宁部分高中田径选项课的现状及发展对策

采用问卷调查、专家访谈、文献资料等方法,对辽宁省重点、普通中学高中开设田径选项课的现状进行了调查分析.研究发现,当前辽宁省重点、普通高中田径选项课正面临困境.究其原因,主要是教师对田径选项课的价值认识不足;此外,当前的田径选项课缺乏趣味性,使学生产生厌学情绪.结合健康体育教育及终身体育教育,对田径选项课在中学体育课中的地位与作用进行了论述,并针对中学田径选项课的发展提出积极的对策和建议;同时,为解决高校田径选项课中的问题提供了参考与借鉴.     

人才资源有效利用的测度问题探讨

本文主要从宏观层次上对人才资源利用水平定量评价方面进行了有益的探索。主要包括以下内容:1)界定人才资源有效利用的概念,研究其表现形式;2)探讨了人才资源有效利用的理论基础和分析模式:3)分析了人才资源有效利用的主要影响因素,构建人才资源有效利用的煤炉模型:4)建立了人才资源有效利用测度指标体系      

x~n+1在有理数域上的因式分解

从特殊情况研究多项式f(x)=xn+1在有理数域上的因式分解.对于正整数,设H(n)是n的大于1的奇约数的个数.本文用初等数论和近世代数的知识证明了:多项式xn+1在有理数域上可分解为H(n)+1个不可约因式的乘积,即D(f)=H(n)+1.     

Training fieldwork supervisors of social work students at a South European University: evaluation of the effectiveness of a relational psychodynamic model

This case-study adopts a mixed research methodology in order to evaluate the process and the effectiveness of a psychodynamically informed training seminar for field supervisors of undergraduate social work students, at a South European University. At the beginning of the seminar, an anonymous questionnaire gathered information on the supervisors’ demographics, preferred supervision style and expectations from the training. The training consisted of four sessions involving analysis of (1) student process-recorded interviews with clients, (2) the relationships formed between the student, the supervisor and the field practice manager, (3) brief virtual scenarios (vignettes) of field practice problems and (4) a videotaped supervision session. At the end of the training process, a follow-up questionnaire researched the satisfaction of supervisors with the training, their confidence to conduct supervision, and their satisfaction with the instructor's teaching. Overall, the training has been satisfactory for the trainees and increased their competence to supervise.     

贯彻《通用规范汉字表》需要澄清误解——以朱大可《汉字革命和文化断裂》为例

教育部、国家语委《通用规范汉字表》是中国今后一个时期在“通用”领域使用汉字必须遵守的规范。贯彻该《字表》必须澄清前一时期文化界对简化字的种种误解。朱大可所持简化字是“字母共产主义化”、“毛体字”，造成“文化断裂”的观点，以及他对某些字形的解说，对推行规范汉字有阻力作用。建议文化名人了解语言文字知识和汉字改革历史。     

Regression from another angle

This paper presents a simply viewed framework that brings together various concepts of regression, prediction, and principal components. Several new concepts related to prediction are introduced, and then the interrelationships of these concepts are established. The generalizations are examined in detail and are illustrated in the context of a well known data set.     

Measurement Error Correction by Exploiting Gene–Environment Independence in Family‐Based Case–Control Studies

Abstract. Family‐based case–control designs are commonly used in epidemiological studies for evaluating the role of genetic susceptibility and environmental exposure to risk factors in the etiology of rare diseases. Within this framework, it is often reasonable to assume genetic susceptibility and environmental exposure being conditionally independent of each other within families in the source population. We focus on this setting to explore the situation of measurement error affecting the assessment of the environmental exposure. We correct for measurement error through a likelihood‐based method. We exploit a conditional likelihood approach to relate the probability of disease to the genetic and the environmental risk factors. We show that this approach provides less biased and more efficient results than that based on logistic regression. Regression calibration, instead, provides severely biased estimators of the parameters. The comparison of the correction methods is performed through simulation, under common measurement error structures.