Moodle LMS平台语言教学活动模块应用技巧

Moodle平台作为目前世界上最为流行的学习管理平台之一（LMS—Learning Management System）,有着许多功能强大教学活动模块。由于其免费开源的特点,使得全世界有很多用户专门为其开发出专业教学活动模块插件,其中包括了如：教学游戏,泛读,Covell等专门针对语言教学而开发的免费模块插件。这些插件结合Moodle自身原有的学习活动模块,大大增强了Moodle台在英语语言教学的功能。本文通过笔者对这些平台的应用心得体会,向读者展示了如何有效地利用上述插件模块,增强Moodle平台的语言教学功能,从而更有效提高语言网络课程的效果。     

论云计算的发展及应用

本文简单介绍了云计算的概念、任务、云计算的发展方向、云计算存在的网络带宽限制、计算能力问题及、数据安全问题。     

Understanding and measuring coordination and control in kicking skills in soccer: Implications for talent identification and skill acquisition

In this review, we explore the role of motor control and biomechanics in developing an understanding of soccer skills using kicking as the main vehicle. The links between these sub-disciplines of sport science have not been well established in the past because of an emphasis on cognitive processes in traditional accounts of motor behaviour. We argue that a dynamical systems interpretation of the processes of coordination and control in movements with multiple degrees of freedom signals a new era in the relationship between the sub-disciplines of motor control and biomechanics. Although research on coordination and control of soccer skills is currently sparse, there are indications that the relationship between motor control and biomechanics could form a significant component of scientific programmes in talent identification and skill development. Further interdisciplinary work is needed to enhance understanding of coordination and control of soccer skills.     

The relationship between torque and joint angle during knee extension in boys and men

The length-tension relationship of muscle contraction is well documented in adults. However, research on this relationship in children has been limited. The aim of this study was to compare differences in the torque-joint angle relationship of the quadriceps muscle in children and adults. Eight boys aged 8-10 years and eight men aged 20-26 years performed two maximal voluntary isometric contractions at six knee joint angles (20°, 40°, 60°, 80°, 90°, 100°). The mean of the two trials was used as the performance measure. Both groups demonstrated an expected increase in relative torque as the joint angle increased (P ? 0.05). The men produced significantly greater relative torque at 20°, 40° and 60° knee flexion (P ? 0.05). The percentage of maximal torque at these angles for the men and boys respectively were: 35.2 - 4.3 vs 15.2 - 12%, 63.6 - 9.1 vs 51.8 - 16.8% and 93.6 - 6.5 vs 84.4 - 14.4%. There were no group differences at 80° or 90°. Peak torque was attained at 80° in men, but decreased significantly (P ? 0.05) at 90° and 100°. For boys, peak torque was attained at joint angles of 80° and 90°. The reduction in peak torque at 100° was not statistically significant, but the relative torque at this angle was lower in men than in boys (77.9 - 13.7 vs 87.1 - 10.4%; P ? 0.05). In conclusion, the relationship between torque and joint angle appears to be affected by age.     

“农超对接”网上交易系统构建研究

近些年,在国家政策的大力支持下,＂农超对接＂这个全民项目开展得如火如荼。该项目是一项有利于国民、有利于政府的宏伟壮举,农民、商家、消费者实现了互利共赢。由于该项目开展时间较短,所以该项目的实施范围还不是很广,更为突出的是其信息化建设不健全,网上交易系统构建更加缺失。提出了一套合理的网上交易系统构建方案,并详细分析研究了在农产品生产基地与超市之间的动态信息流;对＂农超对接＂网上交易系统做出评估并进行了总结。     

基于Struts2结构的在线考试系统设计与实现

基于Struts2和J2EE技术框架,结合MySQL数据库,设计并实现了一个基于B/S架构的在线考试系统,重点阐述了用户答题模块的设计,并提出了一种系统随机出题的方法。     

在线考试系统防作弊策略研究

分析了利用在线考试系统实施考试的过程中可能的作弊方式及其特点,针对各种作弊方式,提出了两种防作弊策略：①自动组卷策略;②将自主开发的具有防作弊功能的ActiveX控件嵌入在线考试系统。两种策略的提出,一方面可减少考生作弊的可能性,另一方面可增强在线考试系统的公平性。     

基于ADAMS二次开发的双前桥转向机构优化设计

随着市场需求的发展,用户对双前桥商用车的需求越来越大。文中介绍了双前轴转向汽丰的转向原理,以及以动力学仿真分析软件ADAMS为二次开发平台,建立针对重型双前桥商用车转向系统设计及优化的专用软件系统,对转向机构进行了优化设计。     

浅析蝴蝶兰在贵州的发展优势

通过贵州和其他地方的气候条件作比较,贵州冬暖夏凉独特的气候环境,是生产蝴蝶兰的最佳场所,贵州生产的蝴蝶兰具有自然的市场竞争优势和保存产品新鲜度的区位优势.     

Development and initial validation of an instrument to assess the motivational qualities of music in exercise and sport: The Brunel Music Rating Inventory

Equivocal results of the psychophysical effects of music have been explained in part by the insensitivity of researchers to important personal and situational variables when selecting music. The aim of the present study was to operationalize a conceptual framework for the prediction of psychophysical responses to music into a music rating inventory to assess the motivational qualities of music in exercise and sport environments. An initial item pool was developed and administered to 334 aerobics instructors. Exploratory factor analysis produced a 13-item, four-factor structure (association, musicality, cultural impact and rhythm response), which accounted for 59.2% of the variance. This model demonstrated acceptable fit indices when tested using confirmatory factor analysis on 314 exercise-to-music participants, and was better than an alternative two-factor model. When cross-validated using multisample confirmatory factor analysis, the model also showed an acceptable fit overall, although some invariance in the rhythm response factor was evident that can be attributed to the exclusive use of synchronous music by aerobics instructors. The Brunel Music Rating Inventory appears to be a valid and reliable tool for both researchers and practitioners to assess the motivational qualities of music in exercise and sport environments.