Yi-Hsing Chang

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An efficient plant regeneration system was developed for Hordeum vulgare L. 'Morex' barley, an important United States malting cultivar. The protocol was based on a series of experiments involving the sizes of immature embryos and the culture media. We found that the embryo size is critical for the establishment of embryogenic callus. Smaller embryos(More)
An inquiry-based ubiquitous tour system is proposed in this paper. The main concept is to use the strategy of inquiry to achieve the purposes of guiding and learning by using PDAs in a ubiquitous environment. This system has the following characteristics: the inquiry learning theory is used to design the guide activities, the provisions of clues are used to(More)
With the increasing availability of inexpensive yet powerful personal computers and servers, there has been an increasing trend toward personal computer cluster systems for network services. In this paper, we present a small-scale personal computer based cluster system for network servers as a low-cost alternative to traditional high-performance computing(More)
In this paper, a Highly Efficient e-Learning System based on Knowledge Management and Intelligent Agents, KMIA-HELS, is proposed. The design concept is to use knowledge management and intelligent agent community to help the learners finding out the adapting courses and learning path. The system analyzes the causes of ineffective learning by portfolio and(More)