中外优秀女子竞走运动员技术参数对比分析

通过对竞走复步的分析,发现中外优秀女子运动员在后摆、前摆、前支撑、后支撑等阶段中的运动学参数存在一定差异,从中发现我国运动员在技术方面存在的不足,学习国外运动员的长处,有利于提高和完善我国女子竞走运动员技术。     

王丽萍竞走关键技术研究

采用高速摄影及影片解析法、摄像及录像解析法、比赛现场采样法、关键技术会诊法，对王丽萍竞走关键技术进行了综合研究。研究的创造点是：1)针对奥运会新设女子20km竞走项目，依据国际田联“竞走定义“的技术标准，规范了王丽萍关键技术模式；2)开发了王丽萍送髋幅度大的技术优点，在奥运会比赛中获得良好的应用效果。     

席勒——传播政治经济学的批判领袖

传播政治经济学的批判领袖席勒 ,不仅是积极活动型的学者 ,而且是以学术成果影响传播实践的典范。其著作启发推动了国际社会对世界传播秩序的讨论和对新秩序的呼吁 ,其思想和见解影响了一些第三世界国家的传播政策和实践。他影响了世界各国传播政治经济学派的学者 ,也影响了传播政治学研究本身     

2001年全国游泳冠军赛接力项目接跳技术分析

为了提高我国游泳接力项目的水平，采用自动计时装置接力出发判断器对2001年全国游泳冠军赛接力项目全部参赛队的预、决赛接跳时间进行研究，发现大多数运动员和接力队的接跳时间处于较差水平，分析了接跳技术上存在的问题。研究证实当水下运动员在最后一次移臂动作臂出水时，接跳运动员开始做出发动作，接跳时间个人为0．10s，全队为0．30s是合理的评价标准。     

高校女子400m跨栏运动员栏间节奏的探讨

400m栏比赛的全程是由各个不同技术特征的若干段落所组成,通常把400m栏划分为五个阶段出发段、前程跨栏跑段、中程跨栏跑段、后程跨栏跑段和终点冲刺段.400m栏是人体极限运动项目之一,400m栏的关键是每一个栏周期的平均速度的平稳性,全程的速度分配、各栏间速度的发挥和利用程度,而保持速度的关键是栏间跑节奏的掌握.栏间步数、步长和节奏在400m栏中显得非常重要.     

自旋1/2量子受激转子中Planck常数调节的整数量子霍尔效应转变的有限尺寸标度分析

量子受激转子(quantum kicked rotor,QKR)是量子混沌研究中的重要模型之一。在自旋1/2的QKR中,调节等效Planck常数可以在动力学局域化相之间实现一系列相变,其形式与整数量子霍尔效应及其平台相变相似。研究这一相变的有限尺寸标度理论,并将其应用于自旋1/2的QKR模型。估计出相变的临界指数为ν=2.62(9),符合整数量子霍尔效应平台转变的普适类。     

#OscarsSoWhite: how Stuart Hall explains why nothing changes in Hollywood and everything is changing

ABSTRACT

Stuart Hall’s work on culture, representation, ideology and hegemony positions Hollywood as a cultural institution informed by and informative of US social values and norms. Thus contemporary debates over Hollywood's diversity are indicative of broader social conflicts. Empirically the article examines 2014–2015 news coverage of Hollywood to question the Hollywood paradox—the lack of diversity in film/TV production yet TV’s increasing shift towards on-screen diversity. It maps three discursive frames: Hollywood exceptionalism, economic imperatives, and institutionalized racism and sexism. The article concludes by using Hulu’s East Los High to reflect on TV’s digital turn and innovative models in production and representation.     

On the critical period of Chinese pupils’ moral development: Retrospect and prospect

Research into the critical period of Chinese pupils’ moral development is one of the most important parts in the field of moral psychological study. This paper reviews 20-year literature available on the critical period of pupils’ moral development and its instruments to measure it. It also gives details of its inadequate research into pupils’ moral development and then concludes with some conjectures about the future of this field of study. __________ Translated from Psychological Science, 2005 (2) The authors are grateful to Prof. Zhang Dajun of Research Institute of Education Science, Southwest University of China to this study.     

Voices of teacher candidates of color on white race evasion: ‘I worried about my safety!’

Abstract

This qualitative study investigated the negative impacts minority teacher candidates receive from white teacher candidates in a required multicultural education class. The findings reveal that four teacher candidates of color had difficulty positioning themselves among the overwhelming silencing power of whiteness in the class. The white students were tactful at evading power and race and flattening the existing hierarchical power relations through the discourses of colorblindness and by preying on the minority instructor. Their understanding of diversity was also shallow. On the other hand, the teacher candidates of color were afraid that they might be labeled as the ones who spoke up against the white students and fearful of the possibility of retaliation and ostracism from the white peers. It seems that the teacher education program’s structure allowed the white candidates to impose strong negative peer pressure on the teacher candidates of color.     

Mathematical Modeling in the Primary School: Children's Construction of a Consumer Guide

This paper examines 6th grade children's local conceptual development and mathematization processes as they worked a comprehensive mathematical modeling problem (creating a consumer guide for deciding the best snack chip) over several class periods. The children and their teachers were participating in a 3-year longitudinal teaching experiment in which sequences of mathematical modeling problems were implemented from the 5th grade (10 years of age) though to the 7th grade. In contrast to traditional problem solving, mathematical modeling requires children to generate and develop their own mathematical ideas and processes, and to form systems of relationships that are generalizable and reusable. Reported here is a detailed analysis of the iterative cycles of development of one group of children as they worked the problem, followed by a summary of the mathematization processes displayed by all groups. Children's critical reflections on their models are also reported. The results show how children can independently develop constructs and processes through meaningful problem solving. Children's development included creating systems for operationally defining constructs; selecting, categorizing, and ranking factors; quantifying quantitative and qualitative data; and transforming quantities.