基于极化分解组合的SAR图像视觉优化和建筑物损毁评估

建筑物损毁评估对灾害应急监测具有重要意义。极化SAR图像蕴含丰富的地物信息,并且记录有目标地物的极化散射矩阵,可用于建筑物的损毁评估。针对完好和损毁建筑物两类目标的散射特征,利用Touzi分解散射角α_s1、去定向后Yamaguchi分解二次散射分量和Touzi分解散射对称度|τ₂|进行RGB彩色合成,对极化SAR图像进行视觉优化,进而利用单一时相SAR图像快速识别出不同损毁程度的建筑物区域。以2011年3月11日发生在日本东北部海域的地震为例,利用灾后的ALOS PALSAR全极化数据开展实验分析,并利用汶川地震RADARSAT-2图像对提出的方法进行验证。结果表明,通过对极化参量的组合不仅可以优化建筑物目标的视觉显示效果,同时可提高不同损毁程度建筑物区域识别度,从而大大降低灾害评估对于数据源的限制和要求。     

铝基复合材料烧结试验中试样制备及试验方法研究

铝基复合材料烧结试验所用试样的制备方法采用常用的粉末冶金法,它的制备方法包括粉末预处理,配料,混料,冷压成形,制样等.但每一个工序都与传统的粉末冶金法有所不同,具有其独特性.原位观察法进行烧结试验也为课题组独创.这些研究为铝基复合材料烧结工艺研究提供了试验依据.     

A Moment of Letting Go: Iris Murdoch and the Morally Transformative Process of Unselfing

Higher education as a personal, intellectual and moral cultivation is a longstanding ideal that is constantly challenged by the view that education is merely the development of specific skills for vocational and personal success. Much research argues that the latter understanding makes education a technical affair that creates an egocentric emphasis on the individual students’ ambitions and desires. This article joins in the defence of the former ideal by enquiring into the moral dimensions of education. This is done by turning to Iris Murdoch's idea of moral transformation, with a specific focus on the idea of unselfing. The main argument is that unselfing is a transformative process characterised by a growing attunement to the surrounding world, and the interconnectedness of goal and process is emphasised. Also, to gain a deeper understanding of what unselfing entails I turn to the idea of attention. It is understood as having a specific direction, outward from the egocentric, and as enabling unselfing. The article concludes by suggesting that unselfing can offer a challenge to (higher) education as it entails a moment of letting go of plans and narratives, and of surrendering to the influence of an existence that exceeds the individual. This moment is of relevance to education as it is crucial to the possibility of growing as a moral being as it cultivates a moral manner of relating to others.     

Dissecting through Barriers: A Follow-up Study on the Long-Term Effects of Interprofessional Education in a Dissection Course with Healthcare Professional Students

Several studies have shown significant improvements in the attitudes and perceptions of healthcare professional students toward interprofessional education (IPE) immediately following intervention with IPE courses. However, there remains little evidence on the lasting effects of IPE courses and the long-term influences of these IPE experiences are poorly documented. The purpose of this study is to assess the long-term effects of an intensive, ten-week interprofessional gross anatomy dissection course at McMaster University. Attitudes and perceptions of past participants towards interprofessional learning were evaluated, now that they have started working with other healthcare professionals outside of the IPE course setting. Thirty-four past participants who have clinical experience working in interprofessional settings or are currently working in the healthcare field completed a follow-up questionnaire consisting of a modified Readiness for Interprofessional Learning Scale (RIPLS) and open-ended questions. Quantitative analysis revealed a significant decrease in their attitude towards teamwork and collaboration and respect for other health professions, but a significant improvement in their understanding of roles and responsibilities compared to their results immediately after the IPE intervention. Qualitative analysis of open-ended questions revealed several themes such as developing interprofessional competencies, developing relationships, and remembering the strengths of the IPE dissection course. The results of this study indicate that the IPE experience in anatomy was highly valued by the students and that past participants maintain a clear understanding of their scope of practice, but the reality of clinical practice may have eroded gains made in the program. Anat Sci Educ. © 2018 American Association of Anatomists.     

在校研究生体育意识及行为现状调查研究

本文采用问卷调查法,对全国20所大学的2000名非体育专业在校研究生的体育意识、体育行为进行调查。结果显示,研究生对体育的多元功能有正确的认识和较高层次的需要,体育态度较好,但体育行为明显滞后,体育态度和行为失调,研究生中体育人口比率远远低于大学生。影响研究生体育行为的主要因素是:健身知识、时间、组织管理的缺乏以及研究生特定的环境和不良的生活习惯等。     

跆拳道教学应"道艺"并重

跆拳道是一项极具东方特色的传统武技,在整个修炼过程中包含了严格的礼仪,充分体现了“道的含义”坚持“以礼始,以礼终,然而在跆拳道教学过程中,许多教师只是简单地起到传授技术的作用,只教会了学生跆拳道技术,而没有引导学生进行“悟道”,背离了跆拳道的发展思路。跆拳道作为一种体育项目,它吸引人的并不是简单的技术表层,而是蕴含在其中的文化价值。跆拳道运动是在修炼技艺的同时铸造人的道德品质,在课堂教学中应该寓道德品质的修炼于技术、素质的练习之中,做到“道艺”并重。     

简述国外体力活动指南

当前各种世界组织一致同意推荐的体力活动指南为：提高和维持时间健康的体力活动最小的运动剂量是每天进行30min的中等强度体力活动,每周≥5次。这一指南提出基于有氧型体力活动的相关研究。体力活动和身体健康之间的关系非常复杂。运动的次数、强度、时间和方式影响健康的获得,充分认识其中的相关变化,有利于促进和提高民众的身体健康。     

结构主义理论视域下的体育过程结构观

根据皮亚杰结构主义理论的基本观点,体育过程结构是在体育与健康全局观的指导下,由教学、锻炼、恢复三要素构成其母结构,并继而形成母结构之下的子结构的复杂整体。且各个子结构都由这三要素所构成,并同时依据每一阶段都由前一阶段的主要内容为主导这一基本转换规律而不断变化发展。体育过程结构正是在这一不断变化发展的过程中形成的动态发展体系。它一方面维持着发展过程中体育基本性质与要求的稳定,另一方面又不断由简单向复杂过渡,继而形成不断优化的更大更新的结构,具有自我调整性。     

散打运动引入传统武术功力训练的可行性研究

运用文献资料、专家访谈和逻辑推理等研究方法,以丰富我国现代散打技术训练方法理论体系为研究视点,针对我国散打运动员在多次中外散打对抗赛中所表现出的攻击力薄弱、抗击打能力较差等问题,结合传统武术功力训练的特点和现代散打运动技术训练的实际,提出了将传统武术功力训练的方法有针对性地移植到对散打运动员的拳法、腿法、摔法及步法的训练之中,来最大限度提高散打运动员的攻击力和抗击打能力,有效提高其散打竞技水平。