体育与(健康)课程中的心理健康教育

本文阐述了体育 (与健康 )课程中实施心理健康教育的意义及该课程对心理健康的影响 ,并对体育 (与健康 )课程中实施心理健康教育的途径进行了探讨 ,为全面推进素质教育 ,提高学生心理健康水平提供参考。     

专家型体育教师的培养

国外，对专家型教师的研究已成为教育学界和心理学界的重点研究领域。国内，对此问题也相当重视，正在积极开展研究。在体育教学领域，开展有关专家型体育教师的研究，不仅对体育师资的培养和体育教师的进修培训具有现实的指导价值，而且对培养各级各类体育人才，加速我国体育事业的现代化进程也有着重要意义。借鉴心理学对专家型教师的研究成果，教学观摩、微型教学、教学决策训练、教学反思及教学研究是培养专家型体育教师的几条有效的措施和途径。     

菲涅耳波带片成像时的像点分析

菲涅耳波带片可使入射光会聚起来，产生极大的光强，使点光源形成一系列的实像点和虚像点，其作用如同透镜成像。利用半波带分析法可分析菲涅耳波带片对称轴上的点光源通过菲涅耳波带片成像时像点在对称轴上的分布及 焦距的变化情况。     

Medieval and renaissance glass technology in Valdelsa (Florence). Part 1: raw materials, sands and non-vitreous finds

A significant number of archaeological finds of the 13th–16th century from the Tuscan sites of Germagnana and Gambassi in Valdelsa—FI, was studied by different physico-chemical investigations (SEM–EDS, ICP, Mössbauer spectroscopy, XRD, XRF, TG-DTA) in order to contribute to clarify the production methodology and the pre-industrial glass manufacture technology. The studied samples are mainly non-vitreous finds as production waste, refractory materials, crucibles and raw materials; also vitreous finds as frits, skims, glasses (glass masses, glass working waste and finished products) have been taken into consideration. The obtained petrographic and physico-chemical data strongly suggest that both Gambassi and Germagnana glass manufactures were strictly connected with the sources of vitrifiable materials, situated in Tuscan sand quarries. In particular a comparison between sands from the neighbouring quarries and appropriate finds of the two archaeological sites evidences that the employed vitrifiable materials possibly belong to La Casina La Cava resort. The archaeological classification, based on macroscopic observation and stratigraphic position, was compared and verified with the scientific classification of the examined finds of Germagnana and Gambassi sites based on their composition, morphology and physico-chemical properties.     

Using the Information Structure Model to Compare Profile-Based Information Filtering Systems

In the IR field it is clear that the value of a system depends on the cost and benefit profiles of its users. It would seem obvious that different users would prefer different systems. In the TREC-9 filtering track, systems are evaluated by a utility measure specifying a given cost and benefit. However, in the study of decision systems it is known that, in some cases, one system may be unconditionally better than another. In this paper we employ a decision theoretic approach to find conditions under which an Information Filtering (IF) system is unconditionally superior to another for all users regardless of their cost and benefit profiles.It is well known that if two IF systems have equal precision the system with better recall will be preferred by all users. Similarly, with equal recall, better precision is universally preferred. We confirm these known results and discover an unexpected dominance relation in which a system with lower recall will be universally preferred provided its precision is sufficiently higher.     

短跑摆腿技术教学的实验研究

笔者主要通过对传统短跑摆腿技术的分析,探讨其所带来的负面影响,并运用实验对摆腿技术进行了新旧教学方法的对比分析。结果表明,采用新摆法的摆动腿抬得更高,步频更快,摆动腿的小腿扒地动作也更积极。     

跳远助跑速度变化对起跳效果的影响——国内外优秀运动员与我院选手的比较分析

笔者采用高速摄影、影片解析、数理统计等方法对西安体育学院男子跳远运动员和国内外优秀选手助跑速度变化而影响起跳效果的因素进行比较研究。结果表明:跳远助跑各段落速度的变化对起跳效果及成绩产生很大影响;西安体育学院男子跳远运动员绝对速度低,起跳前两步速度、速度利用率呈下降趋势,影响起跳初速度;跳远起跳前一步的速度、速度利用率对提高起跳效果要比起跳前9—10m段的速度、速度利用率更具有实际意义。     

莫霍伊·纳吉的构成主义摄影实践与现代设计教育

设计作为提高产品高附加价值的重要手段,在受到社会普遍重视的同时,也带来了我国设计教育的繁荣。但是由于各种原因,形成了当前我国设计教育层次良莠不齐的现状。构成主义摄影的杰出代表莫霍伊·纳吉作为世界上第一所完全为发展设计教育而建立的设计学院包豪斯的一位重要人物,他对现代设计教育做出了突出贡献,在摄影表达可能性上也进行了积极有效的尝试与实践,本文针对上述问题进行论述,希望能给我们当代的设计教育带来启迪。     

建设小康体育的社会学分析

从社会学视角对建设小康体育相关的社会因素进行分析，其目的在于探讨小康体育所需的社会背景、社会结构及其对建设小康体育的影响。文章认为：新时期体育工作方向明确，全民健身工作稳步前进，社会背景透视出基本具备建设小康体育的条件；社会阶层分布、城市化程度、教育发展水平等是影响全面建设小康体育进程的主要因素。     

三种强度运动对脑电地形图影响的比较研究

采用实验研究方法，对体育系男学生(20名)在安静状态、小于通气阈强度、通气阈强度、大于通气阈强度负荷后即刻1min的脑电变化进行测试。结论：通气阈强度运动在一定程度上对大脑皮质产生影响，增进了大脑细胞新陈代谢强度，可改善大脑皮质神经元代谢能力，使其产生复杂的生理效应和训练效应，对脑皮层神经细胞工作能力的改善和提高很显著；大于通气阈强度运动后易使中枢神经细胞产生疲劳。