DNA序列分析法在金融数据时间序列中的应用

通过线性分段将连续性的金融时间序列转化为离散性的字符序列,并基于DNA序列分析法,讨论了此类字符序列的标度特性,以及在金融数据时间序列预测中的可能应用     

耗散结构理论与体育科学

阐述了耗散结构的基本理论及其在体育科学中的应用。包括耗散结构与热力学的辩证关系、耗散理论与非平衡态生物膜、运动训练过程的自组织特征、从耗散结构看运动员竞技能力的发展等。     

数字图书馆中的智能推荐技术研究

为构建一种精确性较高的智能信息技术模型,对蚁群算法、SOM网络进行分析与研究,并基于两者构建智能推荐技术,运用该技术完成模型的建立与更新。最后利用已建模型对目前较通用的读者原始流通信息记录进行测试,验证结果表明该技术的个性化信息服务的准确率较高,且具有较高理论意义与应用价值。     

生灭过程理论在沙堆模型中的应用

探讨了一种确定的、保守、非定向的临界高度沙堆模型,与其他模型相区别的是临界高度依不同位置而取不同的值,将沙堆模型中各类格点之间的转化过程看作是不同格点粒子数的生灭过程,并找出它们之间的对应关系。然后借助生灭方程和生成函数方法导出了颗粒崩塌这类非平衡相变的序参量即失稳格点粒子数密度的运动方程,通过对方程分析,得到了一纽临界指数,并提出了进一步深入研究的一些思路。     

西方关于批判性思维内涵、属性和影响因素的论争

20世纪80年代以来,为了应对全球经济对学生技能水平的要求,西方国家开始广泛关注学生批判性思维的培养,使之逐渐成为各国高等教育改革的重要议题。但是,关于批判性思维的内涵、属性和影响因素等几个关键问题却一直存在论争。从批判性思维的内涵、属性和影响因素来看,西方国家存在强调"思维技能"还是"社会参与"、适用于"所有学科"还是"特定学科"、受"东西方文化的差异"还是"教育环境的差异"影响等几个方面的论争。     

自组织临界性与森林火灾系统的宏观规律性

重点综述了中国森林火灾系统的宏观规律之一——— 自组织临界性 "的研究,包括:(1 )对中国 1 95 0年至 1 989年的真实森林火灾数据进行了分析,并发现了自组织临界性;(2)综合真实森林火灾系统所受到的外界因素(包括人为、环境、树种等),对经典森林火灾模型进行了修正,并构建了新模型;(3 )模拟了森林火灾模型的有限尺度效应,分析了它的实际意义     

激发学生主动式学习的课堂情境创设

结合初中自然科学教学实践，对激发学生主动式学习的课堂情境的导入方法、课堂内容的组织、课堂氛围的烘托，以及课堂情境中学生的直觉顿悟和开放式思维的培养等方面进行了探讨．     

A feel for the game – a Bourdieuian analysis of principal leadership: a study of Queensland secondary school principals

Educational leadership discourse has for sometime been the major intellectual pillar of what was once known as the field of educational administration. An examination of the postgraduate coursework programmes available to aspiring principal leaders at every Australian university supports such a contention. While this discourse does shed light on the ubiquitous concept of leadership, it does little to explain the context in which leadership theory is supposed to contribute to the operational environment of schools. This is where Bourdieuian scholarship is particularly helpful. By shedding light on the complex social space in which principal leaders function, Bourdieu’s concepts of habitus, field and capital are particularly helpful thinking tools. For a variety of reasons the economic field has held philosophical dominance for much of the last 30 years. This has impacted significantly on the work space of principal leadership and needs to be understood if the familiar narratives of leadership theory are to be of contextual use. When investigating the social space of contemporary principal leadership, my recent study of two sets of Queensland‐based principals will be used. The emergence of enterprise bargaining into the workspace of these principals will be used as a means by which to demonstrate the cross‐field contagion of the economic field on to the field of schools. The paper contends that the field of educational administration must endeavour to view leadership theory critically and contextually if the complexities associated with contemporary principal leadership practice are to be understood.     

大型复杂项目的空间网络结构及其特征研究

大型复杂项目的网络不是多个子网的简单叠加,而是分层的空间结构。本文运用复杂网络理论和方法,构造了大型复杂项目空间网络结构的三元组模型,并定义了空间网络的联接运算与收缩运算;然后对子项目关联系数、子项目关键度指数、活动关键度指数及求解算法进行研究,由此可以从项目层次、子项目层次和活动层次分析大型复杂项目的空间网络结构特征,并提出针对性的管理策略。案例研究表明,本文提出的空间网络结构及网络运算可准确描述大型复杂项目的网络结构,同时通过分析网络特征可提出有效的项目管理策略。     

Global Self-Worth among Adolescents: The Role of Basic Psychological Need Satisfaction in Physical Education

ABSTRACT

Global self-worth is important for healthy development and learning, and is therefore highlighted as a major aim in the Norwegian physical education (PE) curriculum. Based on prior research this study aimed to assess potential differences in global self-worth and contextual basic need satisfaction among 2854 adolescents (47.5% boys, 52.5% girls, ages 13 and 16) participating in different movement contexts, and to determine whether basic need satisfaction in PE relates to global self-worth. Structural equation modeling analyses indicate that basic need satisfaction in PE relates significantly to global self-worth. However, adolescents who do not participate in movement contexts outside school report significantly lower basic need satisfaction in PE compared to their sports-active peers, and could possibly therefore experience reduced global self-worth development through PE. Findings support research showing that sports active youth reap most of the bene?ts of PE, and thus, that PE violates the principles of equal education.