Prediction of weightlifter’s motor behavior to evaluate snatch weightlifting techniques based on a new method of investigation of consumed energy

Using proper technique in different sports is an inevitable factor. In this study, available techniques for snatch weightlifting are mathematically evaluated. The optimal motion trajectory is a technique used by weightlifters, which could be determined based on minimizing specific object functions. Object functions based on total kinetic energy, total torque and total power and some new multiobjective functions are minimized using genetic algorithm and the minimax principle. Some important motion characteristics of 13 professional weightlifters were extracted and used to validate the mathematical results. The double knee bending (DKB) technique was studied as a benchmark test. Some important movement features of the technique were shown by the mathematical analysis when applying an object function, that minimized joint torques and powers of different muscles independently. An object function based on joint forces did not show these features.     

创造力测量手段——同感评估技术（CAT）简介

同感评估技术（consensusassessmenttechnique）,又称主观评价法,是Amabile于1982年提出的评价创造力的一种方法。文章简要回顾了同感评估技术出现之前,基于发散思维测验的创造力评价法及其局限性。人们在寻求新的创造力评价方法的过程中,提出了同感评估技术。文章重点介绍了同感评估技术的理论基础,即它的同感定义和概念定义,然后说明了同感评估技术的具体使用方法、发展,以及在各领域的应用情况。最后,通过与创造性思维测验的比较,对同感评估技术作了评价,指出了CAT的优势和存在的问题     

多线索语篇阅读中影响背景信息通达的因素

先前的研究发现,在语篇阅读中,背景信息的通达会受到情景的限制,本研究采用实时窗口阅读技术,通过双人物线索材料,进一步探讨影响这种限制作用的因素。在实验所用材料中,配角只是被提及而未在故事情景中出现,其特征描述与目标句中主角的行为形成冲突关系,以配角特征为探测句,要求被试进行意义判断。结果发现,目标句中主角的行为激活了配角的特征描述,使目标句后探测句的反应时显著短于目标句前的反应时,说明起限制作用的所谓\"情景\"并非故事所发生的\"真实情景\",而是读者根据故事所建立的\"心理情景\"。     

Spitting,kicking and stripping: technical difficulties encountered in the treatment of deprived children

The technical difficulties posed for the child psychotherapist working with children who have themselves experienced violence and abuse are addressed. A distinction is drawn between violence in the service of communicating about such experiences and violence that arises from more perverse aspects of the patient. The therapist's need to pay close attention to his counter-transference is emphasized. From an example of a single session we see the therapist's struggle to receive the communicative aspects of extreme acting-out behaviour at the same time as creating a safe setting in which thinking can take place.     

口腔修复体制作技术发展的辩证思考

口腔修复体制作技术发展经历了从手工操作到计算机辅助制作、从“去材成形”到“增材制造”、从间接制造到直接制造发展阶段。回顾和分析口腔修复学技术发展中存在的基本矛盾以及矛盾对立统一运动的基本规律,有助于口腔医生自觉地培养和建立自然辩证观念,提高辩证思维能力,更好地把握口腔修复学发展趋势和规律。