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- 저자 : Chung-Hsien Wu (검색결과 5 건)
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HAUSDORFF TOPOLOGY INDUCED BY THE FUZZY METRIC AND THE FIXED POINT THEOREMS IN FUZZY
Hsien-Chung Wu 대한수학회 2015 대한수학회지 Vol.52 No.6
The Hausdorff topology induced by a fuzzy metric space un- der more weak assumptions is investigated in this paper. Another purpose of this paper is to obtain the Banach contraction theorem in fuzzy met- ric space based on a natural concept of Cauchy sequence in fuzzy metric space.
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Chung-Hsien Wu,Jeng-Shin Ma,Chung-Hsin Lu 한국물리학회 2012 Current Applied Physics Vol.12 No.4
Nano-sized and well dispersed manganese oxide and nickelemanganese oxide (NieMneO) powders are synthesized via the hydrothermal route. The addition of nickel ions significantly affects the morphology,particle size and the electrochemical properties of the obtained powders. Adding nickel ions results in a significant change in the shape of the powders from rod-like to plate-like. The electrochemical analysis of the electrode reveals that the specific capacitance of the synthesized powders is greatly increased with the addition of nickel ions. When the hydrothermal temperature is increased to 125 ℃, the specific capacitance also increases to 284 F/g and decreases by about 4% after 1500 cycles of charge and recharge. NieMneO is considered to be a promising material for the electrodes used in electrochemical capacitors. Nano-sized and well dispersed manganese oxide and nickelemanganese oxide (NieMneO) powders are synthesized via the hydrothermal route. The addition of nickel ions significantly affects the morphology,particle size and the electrochemical properties of the obtained powders. Adding nickel ions results in a significant change in the shape of the powders from rod-like to plate-like. The electrochemical analysis of the electrode reveals that the specific capacitance of the synthesized powders is greatly increased with the addition of nickel ions. When the hydrothermal temperature is increased to 125 ℃, the specific capacitance also increases to 284 F/g and decreases by about 4% after 1500 cycles of charge and recharge. NieMneO is considered to be a promising material for the electrodes used in electrochemical capacitors.
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Effects of reducing agents on the electrochemical properties of the prepared manganese oxide powders
Chung-Hsien Wu,Jeng-Shin Ma,Chung-Hsin Lu 한국물리학회 2012 Current Applied Physics Vol.12 No.4
Manganese oxide powders with high specific capacitance were successfully fabricated via a simple redox reaction at room temperature. The reducing agents used for the redox reaction significantly affected the oxidation states and the electrochemical properties of the prepared manganese oxide powders. As C2H5OH was used as the reducing agent, high Mn3+ content and high amount of hydroxide were observed in the prepared manganese oxide powders. In addition, the molar ratios of KMnO4 and C2H5OH also influenced the electrochemical properties of the prepared manganese oxide powders. When the molar ratio of KMnO4 and C2H5OH was 1:40, the specific capacitance of the prepared manganese oxide was as high as 402 F/g. These results of the electrochemical analysis showed that, adjusting the molar ratios of KMnO4 and C2H5OH demonstrated to be an effective method for controlling the electrochemical characteristics of manganese oxide powders.
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HAUSDORFF TOPOLOGY INDUCED BY THE FUZZY METRIC AND THE FIXED POINT THEOREMS IN FUZZY METRIC SPACES
WU, HSIEN-CHUNG Korean Mathematical Society 2015 대한수학회지 Vol.52 No.6
The Hausdorff topology induced by a fuzzy metric space under more weak assumptions is investigated in this paper. Another purpose of this paper is to obtain the Banach contraction theorem in fuzzy metric space based on a natural concept of Cauchy sequence in fuzzy metric space.
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A Mandarin Voice Organizer Based on a Template-Matching Speech Recognizer
( Jhing Fa Wang ),( Jyh Shing Shyuu ),( Chung Hsien Wu ) 한국언어정보학회 1996 국제 워크샵 Vol.1996 No.-
On the observation of current available voice organizers, all of them accept only voice commands or word-based commands. Using natural spoken language to operate organizer is still a difficult problem. In this paper, a template-based speech recognizer which accepts near(constrained) spoken language is proposed. Since the template-based recognizer is a domain-dependent speech recognition system, representing and matching of sentence templates become the main tasks of the recognizer. We use finate state networks(FSNs) to represent the sentence templates and propose a vowel-based, syllable-scoring method to match a correct template. By replacing the template sets, this method can be easily applied to other domains. Besides, two main functions, voice recording and voice message query, are implemented on our organizer using a fast CELP encoder/decoder to compress/decompress the voice data in realtime. Experimental results shows that the collected 31 sentence templates can greatly improve the voice interface between the user and the voice organizer.
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