Chung Yuan Christian University

About: Chung Yuan Christian University is a education organization based out in Taoyuan City, Taiwan. It is known for research contribution in the topics: Membrane & Fuzzy logic. The organization has 9819 authors who have published 11623 publications receiving 213139 citations. The organization is also known as: Tiong-gôan-tāi-ha̍k & CYCU.

A study of students' construction of science knowledge: talk and writing in a collaborative group

Abstract: Background In Taiwan, traditional college science teaching concentrates on the direct transmission of knowledge or facts from instructors to students and thereby involves non-interactive teaching activities. Some researchers recommend that college faculties should be moving away from lectures as a means of instruction and increasing opportunities for students' discussion of experimental results and issues related to content and the nature of the discipline. Purpose The purpose of the present study was to examine students' construction of science knowledge through talk and writing activities performed in a collaborative learning group. The research question was to explore the effects and to ascertain how talk and writing affect each other in students' knowledge construction. Programme description The context of this study is a physical science method course designed especially for secondary science preservice teachers, as part of the teacher education programme at a Taiwan university. The course module is ...

Using Objective Words in SentiWordNet to Improve Word-of-Mouth Sentiment Classification

Abstract: To improve the performance of word-of-mouth sentiment classification, this article reevaluates objective sentiment words in the SentiWordNet sentiment lexicon.

Densely Sulfophenylated Segmented Copoly(arylene ether sulfone) Proton Exchange Membranes

Abstract: Segmented copoly(arylene ether sulfone) membranes having densely sulfonated pendent phenyl blocks were synthesized by the coupling reaction of phenoxide-terminated oligomers with bis(4-hydroxyphenyl) sulfone and decafluorobiphenyl (DFBP), followed by postpolymerization sulfonation of the blocks containing pendent phenyl substituents. The coupling reaction was conducted at relatively low temperature by utilizing highly reactive DFBP to prevent any possible trans-etherification that would randomize the hydrophilic–hydrophobic sequences. Segmented copolymer molecular weights were reasonably high, as determined by viscosity measurements. Postsulfonation occurred selectively on the pendent phenyl substituent to yield hydrophilic blocks that were highly sulfonated in regular sequence on the linked phenyl rings. The resulting polymers gave transparent, flexible, and tough membranes by solution casting. Morphological observation by transmission electron microscopy (TEM) and atomic force microscopy (AFM) showed th...