当前青少年亲情淡化原因探究

亲情是家庭幸福生活的主要内容,是青少年健康成长的重要保证。但随着科技的发展,由于一些社会、学校、家庭的原因,青少年出现了亲情淡化,我们应该重视亲情教育,使我们的青少年成为一个懂得亲情的人。     

The trend of body donation for education based on Korean social and religious culture

Until a century ago, Korean medicine was based mainly on Oriental philosophies and ideas. From a religious perspective, Chinese Confucianism was prevalent in Korea at that time. Since Confucianists believe that it is against one's filial duty to harm his or her body, given to them by their parents, most Koreans did not donate their bodies or organs for education in the past. However, by the end of the 20th century, a unique fusion of Western and Oriental medicines were produced on the Korean Peninsula, revolutionizing traditional perspectives on the human body, mortality, and the relationship of medical science to society. Koreans began to think about others' lives as well as their own by realizing the importance of donating one's organs and bodies for scientific purposes. Since then, the number of people donating their bodies to Korean medical and dental schools for the purpose of improving academic learning has increased dramatically. In response, Korean medical schools have begun to hold various types of funeral ceremonies to honor body donors. We have compared such ceremonies performed in Korea with those performed in the United States of America and Taiwan. These ceremonies are viewed as a suitable way to pay proper respect to the dead and to promote knowledge about body donation programs in Korea. Overall, the transition of religions and social ethics in Korea has greatly facilitated body bequeathal programs, benefiting both medical education and the Korean public health administration.     

Abnormal spatio‐temporal source estimation for a linear unstable parabolic distributed parameter system: An adaptive PDE observer perspective

Detection and estimation of abnormalities for distributed parameter system (DPS) have wide applications in industry, e.g., battery thermal fault diagnosis, quality monitoring of hot-rolled strip laminar cooling process. In this paper, the abnormal spatio-temporal (S-T) source detection and estimation problem for a linear unstable DPS is first studied. The proposed methodology consists of two steps: first, an abnormality detection filter (ADF) which generates a residual signal for abnormality detection in the time domain is constructed using pointwise measurement; Then, an adaptive Luenberger-type PDE observer including an adaptive estimation algorithm is designed and triggered only when an alarm raises from the ADF. Theoretic analysis based on the spatial domain decomposition approach is presented to show the convergence of the estimation errors. Finally, an illustrative example is presented to show the performance of the proposed method.     

Prescribed-time containment control with prescribed performance for uncertain nonlinear multi-agent systems

The existing studies on prescribed-time control cannot directly deal with nonlinear functions which don’t satisfy Lipschitz growth conditions. No results are available for prescribed-time containment control of pure-feedback UNMASs with prescribed performance. Therefore, completely unknown nonlinear function, prescribed-time tracking of system states and prescribed performance of containment errors are simultaneously considered in this paper. Fuzzy logic systems are utilized to approximate completely unknown nonlinear function. Prescribed-performance function is introduced and further incorporated into a novel speed function. Combining the proposed speed function and barrier Lyapunov function, this article presents a novel adaptive fuzzy prescribed-time containment control method which can guarantee, under prescribed performance, all followers converge to a convex formed by dynamic leaders in a prescribed time. Moreover, all tracking errors converge to predefined regions in a prescribed time. The effectiveness of the proposed prescribed-time containment control method are confirmed by strict proof and simulation.     

Linear active disturbance rejection control for oscillatory systems with large time-delays

Oscillatory systems with time delays exist widely in actual industrial process. This paper discusses the design and tuning of linear active disturbance rejection controller (LADRC) for the oscillatory systems with large time delays. First, internal model controllers (IMC) are designed for the oscillatory systems to compensate the time-delay and cancel the complex poles; then they are implemented with the general LADRC structures and approximated with observer-bandwidth-based LADRCs. Afterwards, the third-order LADRC tuning formulas for oscillatory systems are derived from the IMC controllers. Simulation examples and load frequency control(LFC) in power system with communication delay are used to test the applicability of the proposed tuning formula.     

公共体育服务视角下体育场馆资源优化配置研究*

公共体育服务的目标是为公民提供良好的体育服务与产品,满足基本体育需求,保障公民体育权利。体育场馆作为发展体育公共服务的物质保障,优化场馆资源的配置,有助于促进体育事业持续发展。综合运用文献资料法、逻辑分析法,明确体育场馆资源优化对提高体育公共服务水平的价值,针对体育场馆资源配置中存在的场地资源布局不科学、运营体系不健全以及公共体育活动组织不到位等现实问题。研究认为,全面优化体育场馆资源布局、创建智慧化服务运营管理体系,开展富有群众特色的健身活动,提高体育场馆资源利用效率,推动基本公共体育服务均等化实现进程,能科学配置体育场馆资源。     

我国男女三级跳远运动员三跳比例及对成绩的影响

摘要：针对我国男女三级跳运动员的技术数据,通过调整运动员起跳时速度转换系数,模拟运动员可以达到最好成绩的三跳比例和技术类型,从而了解技术类型和速度转换系数对运动员成绩的影响。研究采用平面摄像与解析的方法,选取我国三级跳运动员男子7名和女子6名的比赛技术数据进行分析。应用Yu（1999）开发的三级跳模型对不同速度转换系数条件下3次跳跃距离进行模拟,分析每名运动员能够获得的最远实际三跳距离,以及相关的最佳跳跃技术类型和速度转换系数。结果显示,研究中的运动员存在可达到最大三跳距离的最佳三跳比例策略,如采用最佳三跳比例策略,可使比赛成绩平均提高70厘米以上。速度转换系数会影响最佳三跳比例。运动员可根据自己的能力和尽量减少损伤危险的基础上选择可以达到最大三跳远度的最佳三跳比例。     

世界羽坛格局与发展趋势分析

通过研究历届汤姆斯杯、尤伯杯和苏迪曼杯的比赛成绩,结合羽毛球运动发展的历史,揭示当今世界羽坛的实力格局与发展趋势。结果显示:除了前3届尤伯杯,所有冠军奖杯都留在了亚洲,出现了亚洲诸强引领世界羽坛的发展格局;中国、印尼、马来西亚和韩国主导并继续引领羽坛;"汤尤杯"两项赛事都是以中国的参赛为分水岭,中国参赛后改变了竞争格局,中国今后还将继续领先;欧洲球队开始效仿亚洲。     

江西省小学体育教师职业倦怠现状

江西省小学体育教师职业倦怠现状为男教师个人成就感明显低于女教师;在情绪衰竭和去人性化上随教龄的增加呈降低趋势,在个人成就感上随教龄的增加先增强后下降;职称越低,情绪衰竭和去人性化程度越高;学历越低,情绪衰竭和去人性化程度越低;学历越高,个人成就感越高;城区和农村小学体育教师职业倦怠程度不存在显著差异。     

微博时代体育赛事的传播特点——以南非世界杯和广州亚运会为例

近年来微博的发展势头极其强劲,不但成为了社交网站的新宠,给人们的日常生活带来了巨大影响,而且还作为一种新型的传播工具,参与到了各种体育赛事中,给体育迷们带来新的赛事体验。从微博的传播模式和传播特点等方面入手,并以南非世界杯和广州亚运会为例,探析在微博时代体育赛事的新特点。