• 패션비즈니스
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• 제6권4호
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• pp.46-61
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• 2002

The purpose of this study was to analyze critical needs and demands for the multifunctional traveler's jacket and to develop design prototypes based on the findings from the analysis. A self-report questionnaire with the stimuli was applied. Total 163 travelers were purposively sampled for the survey and the data were analyzed quantitatively as well as qualitatively. The results were as follows: 1. The respondents were divided into three groups - "digital-functionality-needs group", "non-digitalfunctionality-needs group", "no-need group", according to their preference and needs for the multifunctional traveler's jacket. 2. The three groups were analyzed (1) to have meaningful differences in experiencing inconvenience in their traveling, (2) to have statistically significant differences in their needs for the multifunctional traveler's jacket, (3) while some imperative consensus in their needs were found in part. 3. Based on the findings of the analysis mentioned above, three design prototypes were developed and visualized with conclusion.

• 연구논문집
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• 통권27호
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• pp.141-151
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• 1997

Recently, the importance of electro-multifunction control valve which is digital control valve is increasing day after day. This is due to the demand of that the current industrial world wants the valve having simpler control circuit and higher operation reliability. It is the PWM controlled high speed electronic valve that satisfies the damands of current industrial world. But, the PWM controlled high speed electronic valve has some non-linearity characteristics like as the delay time of switching and the pressure oscillation phenomenon. These characteristics are an obstacle for the control of high speed & high efficiency in control system. Therefore, in this study, we set the studying purpose on analysis of parameter characteristics in solenoid, and on establishment of optimum design technique in high speed solenoid.