高校拓展训练项目设计模式解析

从拓展训练起源、被高校引入及开展的必要性谈起,详细阐述了高校拓展训练项目的设计依据、理论架构、项目设计思路和方向,为拓展训练理论研究和教学实践提供有价值的模式和依据,同时为教育体制改革提供一定的参考和借鉴。     

Leg soft tissue position and velocity data from skin markers can be obtained with good to acceptable reliability following heel impacts

Quantifying soft tissue motion following impact is important in human motion analysis as soft tissues attenuate potentially injurious forces resulting from activities such as running and jumping. This study determined the reliability of leg soft tissue position and velocity following heel impacts. A grid of black dots was applied to the skin of the right leg and foot (n = 20). Dots were automatically detected (ProAnalyst^®) from high-speed records of pendulum and drop impacts. Three trained measurers selected columns of dots on each participant for analysis; one measurer 6 months later. Between- and within-measurer differences in kinematic variables were all relatively small (<0.8 cm for position; <3.7 cm/s for velocity) between-measurers and (<0.5 cm for position; <2.6 cm/s for velocity) within-measurer. Good (coefficients of variation (CV) ≤ 10%) to acceptable (CV > 10% and ≤20%) reliability was shown for 95% of the position measures, with mean CVs of 10% and 11% within-measurers and between-measures, respectively. Velocity measures were less reliable; 40% of the measures showed good to marginal (CV > 20% and ≤30%) reliability. This study established that leg soft tissue position data from skin markers could be obtained with good to acceptable reliability following heel impacts. Velocity data were less reliable but still acceptable in many cases.     

关于Smarandache函数的下界估计

运用初等及组合方法研究Smarandache函数在一些特殊值上的下界估计,给出了Smarandache函数的一个较强的下界估计,证明了S（2^P-1）≥14P＋l以及5（2^P＋1）≥14P＋1,其中P为任意素数且P≥17,从而改进了相关文献的结果。     

系数允许间断的拟线性抛物方程组的逐片古典解

利用上下解方法和估计,研究了系数允许间断的n维拟线性弱耦合抛物方程组.所研究的方程的主部允许不同,并且向量反应函数是混拟单调的.文章的目的是得到整体的逐片古典解的存在性唯一性.     

小学低年级学生数学课堂提问情况的调查

通过调查结果发现：小学低年级学生经常在课堂上提问,且学生提问的状况与教师应对学生提问的态度和方式有关;学生的提问类型与学生的家庭环境有关;对于学生所提问题难度的不同,教师应对方式差异大;教师应对小学生在课堂上的提问方式与地域有关,教育存在不公平性.在小学低年级教学中,面对学生的课堂提问要给予肯定,保护学生的积极性;要改变应试教育的教育方式,多启发,多探究,要鼓励学生质疑;教育部门应推进城乡教师之间的交流,以缩小城乡教育的差距。     

小班幼儿的家庭养成教育情况调查

家庭教育由于其早期性、持久性以及亲子之间无可替代的血缘、情感关系,它的影响力甚至在某些方面已经超过了幼儿园。因此,我们需要充分发挥家庭教育的作用,形成家园共育的大环境,建立一种合作、互补的关系,共同进行养成教育。     

一类四阶两点边值问题解的存在性的上下解方法

讨论了四阶两点常微分方程边值问题{x^（4）（t）-λx^m（t）=f（t,x（t）,x″（t）） x（0）=x（1）=x″（0）=x″（1）=0’的解的存在性,其中f：[0,1]×R→R连续,λ〉0为常数。利用上下解方法给出了解的存在性结果。     

关于高职院校拓展训练课程设计的研究

本文通过文献资料法、归纳演绎法对拓展训练的理论基础进行阐述,笔者结合了本校拓展课程开设情况,从课程资源、课程目标、课程内容、课程实施及课程评价等方面作了初步探讨和研究,旨在对高职院校开设拓展训练课程提供参考依据。     

上半连续函数的充要条件

在上半连续函数定义的基础上证明了闭区间上的上半连续函数是有界的这一重要性质,并在此基础上给出了两个判定函数在闭区间上是上半连续的充要条件。     

The effects of preliteracy knowledge,schooling, and summer vacation on literacy acquisition

What causes the literacy gap and can schools compensate for it? The authors investigated 3 drivers of the gap: preliteracy knowledge, schooling, and the summer vacation. Longitudinal literacy data over 5 time points were collected on 126 five-year-olds attending higher or lower socioeconomic status (SES) schools during their first 15 months of school. There were several noteworthy findings: (a) gaps in preliteracy knowledge at school entry favor higher SES schools, (b) preliteracy knowledge predicted later progress over and above SES and gender, (c) during the school year there was a widening of the gap between higher SES schools and lower SES schools in reading and spelling skills, and (d) children attending lower SES schools exhibited losses during summer whereas children attending higher SES schools nearly always gained. Contrary to previous studies, the present results indicated that when there are concentrations of children from higher and lower SES in schools located in the children's respective SES areas, the achievement gap widens.