自闭症的病因研究综述

从社会心理学和医学生物学角度对自闭症病因的研究进展进行了综述,以加深自闭症病因的认识及推动自闭症的研究。     

工程教育专业认证背景下的无机非金属材料工艺学课程建设

文章根据工程教育专业认证理念,在课程教学团队建设、专业工程能力以及人才素质三个方面进行了《无机非金属材料工艺学》课程教学改革的探索,提出教师团队结构、课程讲授、考评方式要紧紧以培养学生工程能力和人文素养为中心,进而培养出具有发展前景的高素质专业人才。     

二烷氨基香豆素在聚合物溶液中的荧光行为

7-二乙氨基-4-甲基香豆素(DAMC)在聚合物溶液中,荧光量子效率(φf)在非极性溶剂中与聚合物的含量无关;在极性溶剂中随聚合物的含量增加而增大,即与体系的粘度有关。在各种介质中,φf与辐射和非辐射失活速率常数的变化相一致。荧光偏振随聚合物的含量增加而增大。DAMC的荧光行为与其激发态构型密切相关。     

关于双语教学模式的调查分析与思考

双语教学在中国高等教育中尚处于发展阶段,因而部分师生对双语教学这一模式还存在很多模糊认识。因此,如何从理论和实践上定位双语教学模式,为高校的双语教学改革提供实施方案,是本文试图解决的问题。笔者通过对本科生双语教学情况的调查分析,指出了影响双语教学的症结所在,从而为正确开展双语教学提供了理论和实践依据。     

Optimization design and residual thermal stress analysis of PDC functionally graded materials

INTRODUCTION Polycrystalline diamond compacts (PDC), con-sisting of a polycrystalline diamond (PCD) layer on a WC-Co substrate, and having high hardness and abrasive resistance, are used in a variety of drilling and machining applications (Farhad, 2001; Sadi and Muzaffer, 2001). However, due to differences of thermal and mechanical properties in diamond and WC-Co substrate, residual thermal stresses develop in regions near the interfaces during fabrication. The diamond coating exhib…     

The use of virtual reality simulation to improve technical skill in the undergraduate medical imaging student

In recent years, simulation has increasingly underpinned the acquisition of pre-clinical skills by undergraduate medical imaging (diagnostic radiography) students. This project aimed to evaluate the impact of an innovative virtual reality (VR) learning environment on the development of technical proficiency by students. The study assessed the technical skills of first year medical imaging students. The learning experience by each student was either via traditional laboratory-based simulation or VR simulation, for two specified anatomical protocols. Following the learning experience, the students performed role-plays and were assessed on their technical proficiency. The type of learning environment, laboratory-based or VR simulation, was recorded for each radiographic procedure, as well as demographic data. Data demonstrated an improved total role-play skill score for those students trained using VR software simulation compared with the total role-play skills score traditional laboratory simulation. Demographic multivariable analysis demonstrated no statistically significant association of age, gender, gaming skills/activity with the outcome. The novel medical imaging VR simulation learning tool facilitated technical skill acquisition, equal to, or slightly better than traditional laboratory training. Ongoing data collection will evaluate the impact this VR software has on the undergraduate medical imaging student.

Abbreviations: QUT: queensland university of technology; VR: virtual reality; SLE: simulated learning environment; PA: posterio-anterior; DP: dorsi-plantar; CP: central point; CR: central ray; SID: source image distance; HWA: health workforce Australia     

普通高校体育教材建设的现状与对策的探讨

高校体育教材建设是提高体育教学质量的重要环节，通过对我市几所普通高校体育教材现状的调查研究，分析现行高校体育教材建设中存在的问题，探讨普通高校体育教材建设的新思路。     

医学影像学教学改革的实施策略初步研究

为了保证医学影像学课堂教学有效性,促进医学影像学教学质量的提升,就必须在现有的教学基础上对医学影像学教学存在的问题进行改革。由此可知,“医学影像学教学改革的实施策略初步研究”这一课题具有重要的研究意义。为此,作者从医学影像学教学现状入手,对其进行了全方位、深层次的剖析,并在此基础上探究了医学影像学教学改革实施策略,给出了具有代表性的个人建议。     

外宣翻译材料的质量探析

通过翻译事例分析,指出了当前我国译界在某些宣传资料翻译方面存在质量低下问题及其对开展涉外交流活动所产生的不良影响,并就如何提高我国宣传资料翻译质量提出一些思路。     

论职业技术教育的语文课程及教材建设

语文课程在初中、高中倍受重视，在职业技术教育中却倍受冷落和忽视。本文通过对初中、高中及中等职业技术教育中的语文教学大纲的比较、分析，论述了职业技术教育存在对语文课程定位不当而带来的教材编写及使用上的种种问题。在此基础上，提出了修改职业技术教育语文课程教学大纲的具体意见以及建设职教语文新教材的原则及方向。