Basic skill requirements for selected Army occupational training courses

This study investigated the basic cognitive skills soldiers must possess before entering the Army, skills that are needed for successful completion of entry-level training. Judgments of 126 instructors from 25 military occupational specialties were obtained on 129 candidate skills, which resulted in the identification of 55 basic skills. Factor analysis of these 55 skill items resulted in 11 interpretable factors. Mean scores on the factors were compared across factors and across Army training schools. The results of the study suggest that, for all occupational specialties studied, skills related to the learning process are as crucial as traditional academic skills for successful training course completion. These results have important implications for training for the Army as well as for industry.     

A comparison of the anthropometric, strength, endurance and flexibility characteristics of female elite and recreational climbers and non-climbers.

There is limited information on the anthropometry, strength, endurance and flexibility of female rock climbers. The aim of this study was to compare these characteristics in three groups of females: Group 1 comprised 10 elite climbers aged 31.3 +/- 5.0 years (mean +/- s) who had led to a standard of 'hard very severe'; Group 2 consisted of 10 recreational climbers aged 24.1 +/- 4.0 years who had led to a standard of 'severe'; and Group 3 comprised 10 physically active individuals aged 28.5 +/- 5.0 years who had not previously rock-climbed. The tests included finger strength (grip strength, finger strength measured on climbing-specific apparatus), flexibility, bent arm hang and pull-ups. Regression procedures (analysis of covariance) were used to examine the influence of body mass, leg length, height and age. For finger strength, the elite climbers recorded significantly higher values (P < 0.05) than the recreational climbers and non-climbers (four fingers, right hand: elite 321 +/- 18 N, recreational 251 +/- 14 N, non-climbers 256 +/- 15 N; four fingers, left hand: elite 307 +/- 14 N, recreational 248 +/- 12 N, non-climbers 243 +/- 11 N). For grip strength of the right hand, the elite climbers recorded significantly higher values than the recreational climbers only (elite 338 +/- 12 N, recreational 289 +/- 10 N, non-climbers 307 +/- 11 N). The results suggest that elite climbers have greater finger strength than recreational climbers and non-climbers.     

电机转子参数振动的稳定性分析

在工程中 ,两极电机转子等具有矩形截面的轴 ,由于不同方向上的弯曲刚度不同而引起振动 ,即使激振频率远离系统自然频率 ,也可能产生较大响应而造成破坏 ,这就是参数激励共振。所以 ,研究参数激励系统的稳定性及其稳定区域 (范围 )是很重要的。本文以非对称刚度转子和实际电机转子截面轴转动时的弯曲振动为例 ,用Floquet理论研究其振动稳定范围     

网络化传感器故障自诊断的模糊逻辑方法

介绍了网络传感器的概念及其实现方法.针对网络传感器的故障自诊断功能,提出了一种以模糊逻辑为基础的故障诊断方法,具有简洁有效的特点.仿真结果表明了该方法的有效性.     

留连徜徉华宝斋

浙江富阳的人文山水,那是一轴品味不尽的长卷。然而令我最为向往的一处,便是华宝斋。一说华宝斋,就像面对富春江,满心窝里漾出的都是钟爱的涟漪,还情不自禁地想起北京的荣宝斋。笔墨行中人恐怕没有不对荣宝斋肃然起敬的。初闻华宝斋之时,未识“真面目”的我也不免将信将疑:富阳     

从"十运会"中存在的问题引发的对"举国体制"的理性思考

南京十运会赛场上上演了一幕幕丑闻,对全运会还要不要继续办下去,人们对此产生了质疑,并引发对举国体制的思考。根据我国的国情和经济发展水平等各个方面因素来阐述了对举国体制的看法,对我国体育事业发展的趋势提出了建议。     

有氧运动对单纯性肥胖儿童血中瘦素、神经肽、胰岛素和肿瘤坏死因子的影响研究

目的：研究有氧运动对单纯性肥胖儿童血中瘦素（Leptin）、神经肽Y（NPY）、胰岛素（Insulin）和肿瘤坏死因子（TNFα）的影响，探讨有氧运动对单纯性肥胖儿童细胞因子与内分泌代谢的调控机制。方法：随机选取24名单纯性肥胖儿童和24名同质正常儿童作实验组和对照组，比较两组血中Leptin、NPY、Insulin、TNFα含量。肥胖组进行8周有氧运动训练，比较运动前后各成分的变化。结果：与正常对照组相比，单纯性肥胖儿童血中Leptin、NPY、Insulin、TNFα的含量发生异常增高；有氧运动后各项指标显著下降。结论：有氧运动对单纯性肥胖儿童的作用与血中Leptin、NPY、Insulin、TNFα水平的变化有关，坚持有氧运动可以改善它们在单纯性肥胖儿童血液中的水平。     

学校武术教学与传统文化教育

通过武术的“抱拳礼”、武术拳种命名和拳理、武术套路结构、武术攻防技击特点及持械方式等方面内涵的传统文化意义的深刻分析 ,对在武术教学中如何传授教学本身所拥有的文化教育 ,使学生潜移默化地接受中国优秀文化的有益熏淘 ,以此来培养民主自豪感和爱国主义精神作了较系统论述。     

The reliability of distance run tests for children in grades K-4.

The purpose of this study was to determine test-retest reliability for the 1-mile, 3/4-mile, and 1/2-mile distance run/alk tests for children in Grades K-4. Fifty-one intact physical education classes were randomly assigned to one of the three distance run conditions. A total of 1,229 (621 boys, 608 girls) completed the test-retests in the fall (October), with 1,050 of these students (543 boys, 507 girls) repeating the tests in the spring (May). Results indicated that the 1-mile run/walk distance, as recommended for young children in most national test batteries, has acceptable intraclass reliability (.83 less than R less than .90) for both boys and girls in Grades 3 and 4, has minimal (fall) to acceptable (spring) reliability for Grade 2 students (.70 less than R less than .83), but is not reliable for children in Grades K and 1 (.34 less than R less than .56). The 1/2 mile was the only distance meeting minimal reliability standards for boys and girls in Grades K and 1 (.73 less than R less than .82). Results also indicated that reliability estimates remained fairly stable across gender and age groups from the fall to spring testing periods, with the exception of the noticeably improved values for Grade 2 students on the 1-mile run/walk test. Criterion-referenced reliability (P, percent agreement) was also estimated relative to Physical Best and Fitnessgram run/walk standards. Reliability coefficients for all age group standards were acceptable to high (.70 less than P less than .95), except for Fitnessgram standards for 5-year-old girls on the 1-mile test for both fall and spring and for 6-year-old boys and girls on the 1-mile test administered in the spring.