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신관섭,장보화,김지희,김동식 순천향대학교 부설 산업기술연구소 2014 순천향 산업기술연구소논문집 Vol.20 No.2
In this paper, a web-based Java applet for basic diode circuits is implemented to enhance the learning efficiency. The implemented applet in this paper is composed of 5 subjects : basic characteristic of diode, half-wave rectifier, capacitor filter circuit, center-tapped full-wave rectifier, bridge full wave rectifier. As the learners can easily understand the basic concepts for the operating principles and the concept of basic diode circuits through voice guidance and simple mouse clicks, it is possible to increase the effectiveness of learning in the field of electronic circuits. The Java applet as an educational contents can be executed easily at anytime through a typical web browser such as Explorer, Chrome. Future research interests are the implementation of clipping/clamping circuit, voltage doubler/trippler, In addition, implementation of a web-based virtual laboratory gives us another challenging opportunity.
신관섭(Gwanseob Shin),Sudeep Hegde 대한인간공학회 2010 대한인간공학회 학술대회논문집 Vol.2010 No.5
User-preferred position data of the computer display were quantified to determine how the size and/or the number of computer displays (19”, 24”, 27.5”, and dual 19” LCDs) influence the voluntary positioning of the computer display. Nineteen subjects performed a data entry task for 20 minutes with each of four display setups while their preferred display position data were periodically quantified. Subjects placed displays significantly (p<0.05) further as the size of display increased while maintaining the viewing angle of the top and center of display at or near eye height. Visual acuity reserve of all subjects (visual acuity of 20/30 or better) ranged from 2.0:1 to 3.2:1. No difference in viewing distance was found between the single 19” and the dual 19” setups. Results of this study suggest that users determine their preferred display position by the vertical dimension of display’s viewable area, while maintaining a viewing distance of at least twice larger than individual’s acuity threshold.