体育运动中抛物体问题研究的基本方法

基于抛物体运动规律对两类典型的抛物体运动（投掷项目、篮球投篮）进行了分析。在投掷项目中,投掷器械的飞行远度作为目标函数,在Excel中计算了不同的出手速度（V0）、出手角度（θ）及出手高度（H）对器械飞行远度的影响;在篮球运动中,以投篮的最小速度角和最小进篮误差作为目标函数,计算了不同的投篮距离、出手高度的情况下,投篮的最佳出手角度,寻找出篮球投篮最佳出手角的变化规律以便于运动员在实践中掌握和运用,提高投篮的命中率。     

关于高校体育教学改革的思考

对高校体育教学改革提出了方案。在思想认识上,真正地将受教对象视为主体,设置科学的体育教学课程;在理论教学上,重新认识体育概念体系;在运动教学上,重新认识新时期运动教学改革的视点和目标定位;在教学的管理与评价上,重视教学的相长相补、互促互动,重视教、学双方的自觉、主动和投入,强调教方的思想、方法、责任和学方的认识、理解、应用,强调评价的内容、方法与价值、效果等。     

Kicking modality during erratic-dynamic and static condition effects the muscular co-activation of attacker

The purpose of the study was to investigate the effect of different kicking modality, i.e., erratic-dynamic target (EDT) versus static target (ST) on the performance of the roundhouse kick in two groups of taekwondo athletes of different skill level. Three-dimensional analysis and surface electromyography (SEMG) analysis were performed on 12 (Group A: six sub-elite, Group B: six elite) athletes to investigate muscle co-activation pattern under two conditions, i.e., EDT versus ST. In the results, the muscle recruitment ratio of the agonistic muscles was higher for Group A, whereas Group B had higher recruitment ratio for antagonist muscles. Overall, the co-activation index (CI) of hip joints appeared higher in the extensors for Group A, whereas higher CI was observed in flexor muscles for Group B with comparatively higher CI during EDT condition than ST condition. Higher value of CI was observed in flexor muscles of the knee joints among Group A during EDT conditions, in contrast, higher CI in the extensor muscles was observed among Group B during ST conditions. In conclusion, the study confirmed that erratic-dynamic movements of target could change the movement coordination pattern to maintain the joint stability of participants.     

一种鲁棒的多尺度稀疏表示SAR目标识别方法

提出一种基于多尺度Gabor滤波特征提取和稀疏表示的SAR图像目标识别方法。首先,在目标分割的基础上,利用Gabor滤波器对SAR目标图像在不同方向上进行滤波,增强目标的局部特征;然后,根据稀疏表示模型,以训练样本特征为原子构建字典,利用稀疏求解算法选择最优的原子集合来表示测试样本特征,进而计算表示系数中非负值的l₁范数来判别测试样本。实验结果验证了该算法的有效性与鲁棒性。     

单源三站外辐射源雷达目标探测性能

论述全向外辐射源雷达空中目标探测系统的主要问题及系统体制损失。针对单源单站（SISO）和单源三站（SITO）两种工作方式,在接收天线阵元数相同的情况下分析探测距离和定位精度。在单源三站条件下推导直角坐标系中的目标速度矢量表达式,并分析速度测量精度。研究结果表明,在一定条件下,单源三站组网方式的空间覆盖范围与单源单站相当,且具有平面定位精度较高,可获得目标速度矢量和技术实现难度小的特点。     

Planting virtual lemons: performing forest protection in the context of political performativity

The socialist People’s Democratic Republic of Laos (Lao PDR) has some of the largest intact forests in Southeast Asia, yet these are being quickly depleted by illegal logging, slash-and-burn farming, increasing population pressures, monocrop plantations, mining and dam building. Foreign government and nongovernmental organizations stage “infotainment” theatre plays to educate and inform the Lao public of its role in protecting the forests even though government projects and concessions are the primary causes of forest destruction. Because all the nationally subsidized performing arts troupes are government mouthpieces they cannot critique the government’s role. Foreign aid agencies funding the dramas are also made complicit in the hypocrisy of promoting forest protection to those with the least power to do so, while both performers and spectators know who is profiting the most from the sale of forest products. This article examines theatrical performances regarding forest protection presented in this context of performativity in which the state manipulates socialist rhetoric to conceal its actions that enrich its officials and capitalist partners at the expense of the rest of the Lao public.     

应用法学专业人才素质培养研究

应用法学专业是相对于普通法学专业而言的,是一个新兴的专业,侧重于人才素质的培养和法律实务能力的提高.人才素质包括思想素质、知识素质和能力素质,应当对应用法学专业的教学内容和教学方法进行改革,通过辩论赛、模拟法庭、法律援助、担当"校外法制辅导员"、教学实习等具体途径来培养应用法学专业人才素质.     

应用型高校管理类专业《西方经济学》教改思路探析

目前,社会对应用型人才的需求日趋增强。为了培养应用型人才,高校需要对课程教学进行相应的改革。本文在分析社会对应用型管理人才需求特点的基础上,探讨了应用型高校管理类专业西方经济学教学如何适应社会对应用型人才各方面素质的要求,在教学内容和教学方法方面有所创新。     

汉语学习的层阶与汉语教学的适切性

汉语所承载的内容包罗万象,可以分为若干个层面,而不同层面包含的内容具有不同的性质与特征,相应的汉语学习就具有层阶性,即从习得汉语的语言符号系统到理解汉语的文化内涵,进而形成汉语的审美与价值观。因此汉语教学应确定目标层次,即从促成记忆的教学入手,进一步促成理解的教学与审美认同的教学,形成汉语学习的阶梯型发展。     

以人为本,健康第一--高校体育教学改革目标探析

应用系统工程、管理学和信息论探讨高等学校体育教学,改革目前以竞技体育为主的教学体制,坚持"以人为本,健康第一",建立以学生为主体、教师为主导的新的教学体系和教学模式,促进学生从单纯的记忆型、模仿型向思考型、创新型转变.