• Journal of the Ergonomics Society of Korea
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• v.18 no.3
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• pp.1-12
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• 1999

This study investigated human operator's perceptual and psychophysical responses to vibrotactile stimulation on various parts of the hand. Using a small vibrotactile display, the effects of three mechanical parameters consisting vibrotactile stimulations, i.e., vibration frequency, pulse-width modulation duty cycle, and number of contactors, on differential thresholds were examined at five different loci of the hand. It was observed that differential threshold varies with vibration frequency and number of active contactors. Differential sensitivity was the greatest at the vibration frequency of 120 Hz. The differential sensitivity was not found to be affected by loci on the hand. The area of stimulation on the hand was also found to be significant in that the sensitivity increased with the number of active contactors. It should be noted that the conclusions from this study generally correspond to those from the previous study on the absolute sensitivity. which means that tactile sensitivity to vibrotactile stimulations can be controlled with a systematic and consistent passion for emulating normal everyday contact on human hands in teleoperation and virtual reality applications.

• Journal of the Ergonomics Society of Korea
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• v.17 no.1
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• pp.1-9
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• 1998

The sensitivity of the emotion evoked visually by IAPS was attempted to be defined using EEG(electroencephalogram). Twenty university students were participated in this study. Their EEG was measured and analyzed in terms of frequency range such as delta, theta, alpha and beta wave. The results showed that alpha increased, but delta and beta decreased with positive emotional progress. Inter-variation between alpha and delta in F4 and beta variation in P3 were indicative of the evaluation sensitivity of human emotion.

• Journal of the Ergonomics Society of Korea
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• v.17 no.2
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• pp.1-10
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• 1998

The objective of this study is to investigate hwnan operator's perceptual and psychophysical responses to vibrotactile stimulation on various parts of the hand. Using a small vibrotactile display, five different loci of the hand along with two other mechanical parameters consisting vibrotactile stimulations, which are vibration frequency and number of active contactors, were examined for the effects on absolute thresholds. All test variables were found to have significant effects on thresholds. It was observed that absolute threshold is a function of vibration frequency and number of active contactors. Tactile sensitivity was the greatest at the vibration frequency of 240 Hz, and the fingertip was found to be the most sensitive locus on the hand. The area of stimulation on the hand was also found to be significant in that the sensitivity increased with the number of active contactors. The results of the study generally supported those of other previous studies. It should also be noted, however, that the conclusions from the study should be limited to the absolute sensitivity, not to the suprathreshold intensities of normal everyday contact with the hands.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2006.05a
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• pp.415-416
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• 2006

In this paper, we propose the ergonomics design method in shape design applicable which considers the user interface for railroad. This study focuses on ergonomics design and sensibility engineering design, user interface, which should be considered from the conceptual design stage of the rolling. Human's sensitivity and User Interface of railroad investigated ergonomics studies of several type. The sensibility engineering design made approach of user center design in railroad design. New design railroad to satisfaction passenger's various desire, to safety and convenient through high technology, to sufficient passenger's aesthetic sense. Therefore, we have application to properly of ergonomics design element in railroad design. we expert visual design and user interface help greatly in excellent railroad design.

• Journal of the Ergonomics Society of Korea
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• v.17 no.3
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• pp.103-115
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• 1998

Although applying experimental data of ergonomics to a industrial design seems to be a difficult task, making every effort to the application of ergonomics to the industrial design process is still attempted. Sometimes, it is easy to use experimental data, yet, it is very hard to take that data and implement it into the design process. The essence of industrial design depends on human sensitivity, thus we can call the sense of design the software and the experimental data of ergonomics the hardware. The harmony of this hard & software is very important for the process and development of design. New products always demand new forms. Accordingly, it is easy for designers to neglect applying experiments and ergonomic data to products for public users. However, the study of ergonomics data continuously helps to be applied to more products year after year. This paper explores, how to improve the design of the tilting angle related to the shape of knobs on a front panel of a computer monitor. The results of experiments show that a tilted angle is more efficient than that of straight-type when placed on the front panel of a computer monitor with a power button.

• Journal of the Ergonomics Society of Korea
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• v.32 no.4
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• pp.309-319
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• 2013

Objective: The aim of this study is to review and summarize human vibration measurement process, and necessity and methods of frequency weightings for human vibration. Background: Prolonged human exposure to hand-arm vibration and whole-body vibration can result in a range of adverse conditions and the development of occupational diseases such as vibration white finger. For preventing these adverse effects, it is important to correctly apply human vibration measurement process. Method: This manuscript was based on the review and summary of mechanical and human vibration relevant texts, academic papers, materials obtained through web surfing. Results: This manuscript summarizes human vibration measurement process described in ISO standards and relevant texts. The sensitivity of the human body to mechanical vibration is known to be dependent on both the frequency and direction of vibration. To take this into account, varying frequency weighting functions have been developed, and RMS frequency-weighted accelerations are used as the most important quantity to evaluate the effects of vibration on health. ISO provided nine frequency weighting functions in the form of curves and tables. Researches on frequency weightings are focused on development and validation of new frequency weightings to truly reflect the relationship between vibration exposure and its adverse effects. Application: This would be useful information for systematically applying human vibration measurement and analysis process, and for selecting appropriate frequency weighting functions.

• Journal of the Korean Society of Clothing and Textiles
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• v.26 no.12
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• pp.1709-1715
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• 2002

신사복 정장은 일상의 관습으로 착용되는 가장 중요한 항목으로서, 사무직, 관리 직, 전문직 등의 정신노동자들에 게 폭넓게 수용되는 매우 중요한 의복항목이 다. 따라서 소비자의 감성에 부합되는 신사복 개발을 위해 신사복 디자인에 대한 감성연구가 필요하다. 이에 본 연구에서는 신사복 상의 디자인 개발을 위해서 소비자의 감성에 적합한 신사복 상의를 적절하게 표현해 줄 수 있는 감성 어휘를 추출하고 그 인자를 분석하였다. 요인분석 결과,7개 의 요인과 67개 의 감성 어휘 가 채택되었다. 선택된 감성어휘는 인자별로 대별하여 7개의 요인으로 묶어서 대표적인 요인명을 붙인 결과, 요인 1은 품위성 요인. 요인 2는 매력성 요인. 요인 3은 실용성 요인, 요인 4는 체형성 요인. 요인 5는 외관성 요인. 요인 6은 남성미 요인. 요인 7은 활동성 요인이라고 하였다.

• Journal of the Korean Home Economics Association
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• v.44 no.4 s.218
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• pp.133-144
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• 2006

The contemporary period is called "the age of sensibility" in which each individual consumer seeks to have her or his own products. Businesses are in need of design developments with an emphasis on customer sensitivity, and at the same time consumers must understand their own sensitivity to acquire information on designs that suit them. This research established a sensitivity and configuration database on designing men's jackets using the sensitivity engineering approach to clothing design information. The user interface was created on the Internet. Sixty-seven sensitivity terms of vocabulary appropriate for the assessment of men's jacket design were selected, and the different designs were classified into six items and 24 categories. Thirty men's jackets with different designs were produced for sensory testing and the results were analyzed in accordance with general linear I statistics. A sensitivity database was established for each category. My-sql, PHP, Java Script, and Html were used for the configuration database work. The configuration of items/categories, with the most appropriate sensitivity database information assigned to the selected sensitivity vocabulary, was programmed for display on the computer screen. The sensitivity vocabulary of a customer's choice for each factor was selected for the program to run, while the category and product configuration of the men's jacket most suitable for the search was displayed based on the user interface.

• Journal of the Korea Furniture Society
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• v.18 no.1
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• pp.47-55
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• 2007

As the machinery-centered mechanism has been changing into human-entered digitalization and urbanization, industrial and social structures gradually become softer. Also in design, with the growing success in solving technological problems, a new dimensional concept is demanded, along with the expanded scope of design application. For the purpose of developing a furniture design contributing to better human life, the study aims to sufficiently examine senses and psychological conditions of human beings and explore the design practically meeting consumer's desires. It is necessary to systemize and establish the study on human senses as one of the scientific fields in the near future and work together with experts from a wide range of areas, by reflecting the outcomes of studies on furniture design. In addition, it is expected that exploration of sensible furniture meeting consumer's demands and effective understanding resulted problems will help such design applied to sociability and humanity problems in a reasonable manner as a sensible design.

• Journal of Korea Multimedia Society
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• v.12 no.3
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• pp.460-471
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• 2009

This study is the research on sensitivity in the web. The main purposes of the study are to present the objective criteria on sensitivity of web users and to help embodiment of successful design. The study has overall two main subjects, which are the contents and results. They are as follows. First, the study is going to develop sensibility factors and the sensitivity structure model. Second, based on the study above, the further stage focuses on the correlation between sensibility and figurative factors in the web design. By understanding of the correlation between sensitivity and figurative factors, the study assist designer in the embodiment of successful sensitivity design. And it shows one of the various approaches to sensitivity. In the end, it can be considered as a process to make an objective criteria on sensitivity design at the same time expected to play a role providing designers with rational guideline on work and evaluation and helping the presentation of successful sensitivity design.