健美操运动员前交叉韧带损伤的康复方案研究——Ⅰ度损伤的保守治疗     

牛金榜 《体育科技文献通报》2020,(2):150-151,154

膝关节是人体负重和运动的主要关节,前交叉韧带(ACL)损伤是膝关节最常见运动损伤之一,而健美操运动也是造成膝关节前交叉韧带损伤的项目之一,本文通过运用文献综述的方法,广泛收集有关膝关节ACL损伤的基本理论及防治知识,通过前交叉韧带的生理解剖结构,并结合健美操项目的运动特点来分析造成前交叉韧带一度损伤的原因及根据原因提出预防措施,针对前交叉韧带一度损伤的早、中、晚三期的病理演变特征提出康复方案,对以后前交叉韧带一度损伤保守治疗的快速康复提供理论基础,并对以后健美操训练中前交叉韧带损伤的预防和韧带重建术后康复训练有重要意义。  相似文献   

The effects of mid-flight whole-body and trunk rotation on landing mechanics: implications for anterior cruciate ligament injuries     

Meghan L. Critchley  Daniel J. Davis  Michaela M. Keener  Jacob S. Layer  Margaret A. Wilson  Qin Zhu 《Sports biomechanics / International Society of Biomechanics in Sports》2020,19(4):421-437

ABSTRACT

The purpose was to quantify the effects of mid-flight whole-body and trunk rotation on knee mechanics in a double-leg landing. Eighteen male and 20 female participants completed a jump-landing-jump task in five conditions: no rotation, testing leg ipsilateral or contralateral (WBRC) to the whole-body rotation direction, and testing leg ipsilateral (TRI) or contralateral to the trunk rotation direction. The WBRC and TRI conditions demonstrated decreased knee flexion and increased knee abduction angles at initial contact (2.6 > Cohen’s dz > 0.3) and increased peak vertical ground reaction forces and knee adduction moments during the 100 ms after landing (1.7 > Cohen’s dz > 0.3). The TRI condition also showed the greatest knee internal rotation angles at initial contact and peak knee abduction and internal rotation angles and peak knee extension moments during the 100 ms after landing (2.0 > Cohen’s dz > 0.5). Whole-body rotation increased contralateral knee loading because of its primary role in decelerating medial-lateral velocities. Trunk rotation resulted in the greatest knee loading for the ipsilateral knee due to weight shifting and mechanical coupling between the trunk and lower extremities. These findings may help understand altered trunk motion in anterior cruciate ligament injuries.  相似文献   

Fault diagnosis for analog circuits based on chaotic signal excitation     

Hong-Guang Ma  Xiao-Fei Zhu  Ming-Shun Ai  Ji-Dong Wang 《Journal of The Franklin Institute》2007,344(8):1102-1112

A fault diagnosis method for analog circuit is proposed in this paper. An all-purpose amplifier is taken as the typical circuit under test (CUT). The chaotic signal, which is generated by an improved Chua's circuit, is employed as the excitation signal of CUT. The algorithm for phase-space reconstruction of chaotic time series is a combination algorithm of multiple autocorrelation and Γ-test. The circuit state is estimated based on detecting the geometric change of Chua's attractor with a data-mining approach. For the purpose of information fusion, another eight features are extracted from the testing data to comprehensively determine the CUT states. A discussion is made for comparing the effectiveness of each feature according to the testing results.  相似文献   

Migrating selves: reconstructing and renegotiating Black immigrant academic identities     

Saloshna Vandeyar 《高等教育研究与发展》2020,39(6):1276-1289

ABSTRACT

This study set out to explore how Black immigrant academics (BIAs) reconstruct their identities within academe. Utilising the research methodology of narrative inquiry, this article explores how BIAs came to see themselves across those communities, which were of primary importance to them in the reformation of their identities. Through the construction of narratives of experience, their lived and told stories emphasised the diversity of their identities that were negotiated with others within personal, historical and situational contexts. The study of BIAs’ lives from their perspective, in which they actively and socially develop their identities, not only provides a lens through which they can be understood as shifting constructions of identity but allows them to rethink who they are and have become and what influence power relations have in promoting or negating their sense of academic self.  相似文献   

WebSphere的安全控制及Servlet类的使用     

谢春明 《乐山师范学院学报》2003,18(4):106-110

WebSphere应用服务器使用户能够为Servlet的开发实现“一次写成，各处使用”的目的，Web服务器的配置被设置成将对JSP件的HTTP请求传递至WebSphere应用服务器，并有一套完整的安全设置的认证协议和方案，支持使用XML件来配置Servlet。  相似文献   

“课程思政”视域下课程内容重构的价值     

张艳敏 《宁波教育学院学报》2020,(1):46-49

实行"课程思政"建设是实现各类课程与思想政治理论课形成协同效应的必然选择。"课程思政"建设的立足点为课程内容重构。课程内容重构要以"一个中心、两个抓手、三个方面"为原则。以立德树人为中心,以课程知识体系和学生政治素养成长为两个抓手,以教师提升、课程研究、政治素养获取为抓手的三个方面,强化课程历史底蕴、内容思政育人的道路自信、内容建构的国际视野,进而实现"课程思政"立德树人目标。  相似文献   

《现代教育技术应用》课程教学模式重构探讨     

林莉 《教育教学论坛》2019,(20):197-199

文章分析了《现代教育技术应用》课程基本情况,罗列了《现代教育技术应用》课程教学模式存在的问题,探讨了《现代教育技术应用》教学模式重构方法":以模块学习为主线,以任务驱动为手段,以多元评价为保障"。  相似文献   

代表人诉讼制度的反思与重构     

于胜刚 《临沂师范学院学报》2006,28(1):50-52

代表人诉讼制度是为解决多数人纠纷而设计的一种当事人诉讼制度。代表人诉讼是我国民事诉讼法特有的处理群体纠纷的诉讼程序制度,它是指当事人一方人数众多时,从中选出数人作为代表进行的诉讼。我国代表人诉讼制度的立法,内容上过于简单、概括,实际操作比较困难,应从立法角度进行完善。  相似文献   

基于压缩感知的电能质量信号重构算法研究     

张秀君  俞国军 《浙江工贸职业技术学院学报》2016,(1):30-33

为解决传统电能质量信号在采样时面临的采样率高,采样资源浪费和硬件成本高的问题,压缩感知理论被引入到电能质量信号的采样与重构过程。信号的稀疏表示是压缩感知理论中的关键问题,一般选择正交基作为压缩感知中的稀疏变换基。基于多重扰动的电能质量信号,本文提出了基于不同干扰的电能质量模型来选择不同的信号稀疏变换基的压缩感知重构算法。实验证明与整个信号采用单一DCT变换基或FFT变换基的压缩感知重构算法相比,本文提出的方法具有更好的信号重构性能。  相似文献   

震灾后心理健康的重建与维护     

周宁  刘将 《成都师专学报》2008,(5):12-15

地震是威胁人类安全的主要自然灾害之一。2008年5月12日发生的汶川大地震不仅严重威胁了人们的生命安全,而且还给人们的心理造成了极大的创伤。震灾后的心理问题,一方面表现为恐惧、悲伤、焦虑等负性情绪反应,另一方面还包括不良的躯体症状与行为反应。按照一些基本的途径做好震灾后心理健康的重建工作,是当前最重要的一项社会性工作。在震灾后及时地总结经验,建立心理援助的制度化服务体系是震灾后心理健康长期维护的基本保障。  相似文献