数字化进程中二次文献的开发与利用

论述了二次文献的发展历史和存在价值,分析了二次文献在数字化时代所面临的现实问题,并以高校图书馆为依托,提出相应的对策.     

An integrated lecture,virtual instrumentation lab approach to teaching UV-Vis spectroscopy

In a chemistry instrumentation course, the teachers explain to students how instruments function and which their basic technical principles are. We integrated an interactive UV-Visible spectrophotometer simulator into a chemical instrumentation course in an attempt to improve the teaching procedure. The students were divided into two groups, the experimental group (EG) and the control group (CG). The students of EG participated in an instrumentation course in which we distributed to them the components of an old spectrophotometer and presented them with figures and animations about the component’s functions using Power-Point presentation. During the presentation a discussion took place and we posed questions to the students in order to make them think about the technical principles of the UV-Visible spectrophotometer. After the presentation, the students performed virtual experiments using UV-Vis spectrophotometer simulator on personal Computers and they shared measurements, observations and conclusions about their experiments using the LAN (local area network). In the students of CG we presented the spectrophotometer and its components following the traditional way, drawing the components’ function and the structure of instrument on the blackboard. Comparison of the two groups showed that the EG students valued the opportunity to collaborate with other peers during the lecture and also they found this teaching procedure useful. As a result they felt more confident to manipulate a real instrument and the EG students better understood the function and the technical principles of the instrument than the CG students.

大学生资助问题刍议

本文阐述了大学生资助的研究范围和相关的理论,主要资助方法,以及日本、美国在大学生资助政策上的特点和可借鉴之处,并对我国大学生资助问题的研究成果予以综述.     

中外高等教育需求影响因素的比较研究

本文对国内外个人高等教育需求的影响因素进行了比较,发现影响因素主要包括个人和家庭的经济状况、社会背景和学校的财政资助政策等.其中,个人和家庭的经济状况体现为借贷约束对入学决策的影响,它具有长期和短期两种效应;社会背景对入学决策的影响可以理解为是借贷约束的一种反映;财政资助政策对入学的影响取决于学生类型和资助类型的不同,总体上说资助对于入学具有积极作用.基于此,本文分析了它们对中国高等教育的成本补偿、学生资助制度所具有的借鉴意义.     

洗涤剂中主要助剂的研究进展

综述了洗涤剂中主要助剂在无机、有机、生物三个方面的研究进展，     

在历史教学中发挥直观教具的积极作用

历史教学中运用直观教具 ,可以增加学生对不可再现的历史的感性认识 ,是知识上升为理性认识的捷径。通过教具教学培养学生能力的作用也不可忽视。直观教具是教师教学过程中的好帮手 ,如何用好是个值得深思的问题。     

图片类教具在幼儿园教学活动中的具体运用

在幼儿园教学活动中,教师常会用到一些图片、卡片、挂图等使抽象的文字变为形象直观的图像,让儿童看得懂,协助教师更好地开展教学活动,也是为了促进儿童获得更好的发展。图片类教具有静态化、平面化、易造型化、简单化以及视觉化等特点,其特点决定了图片类教具的作用。而图片类教具该如何在教学活动中运用要考虑一些事项。     

ARPA局限性剖析(一)

本文从ARPA软硬件设计、使用性能指标等方面,剖析了ARPA应用于避碰的局限性,以提醒广大航海人员应当十分重视ARPA的局限性对避碰及导航的影响,不断提高使用和数据分析、判断的能力,确保航行安全。