• 로봇학회논문지
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• 제4권1호
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• pp.34-42
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• 2009

Rodents, specially rats, can recognize distance and shape of an object and also pattern of the textures by using their whiskers. Mechanoreceptors surrounding the root of whisker in their follicle measure deflection of the whisker. Rats can move their whisker back and forth freely. This ability, called active whisking or active sensing, is one of characteristics of rat behaviours. Many researches based on the mechanism have been progressed. In this paper, we test a simple and accurate method based on deflection of the whisker: we designed biomimetic whiskers modeling after a structure of follicle using the microphone. The microphone sensor measures a mechanical vibration. Attaching an artificial whisker beam to the microphone membrane, we can detect a vibration of whisker and this can show the deflection amount of whisker indirectly.

• 한국멀티미디어학회논문지
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• 제21권8호
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• pp.1002-1020
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• 2018

Virtual reality (VR) technologies, which have been improved of late, offer experiences closer to reality than before. While VR technologies are expected to be an effective medium if used in learning content that cannot be offered in real life, distraction factors in VR technologies may prevent the users' presence and flow, making these technologies ineffective. Therefore, this study, through experiment and observation, analyzed the effect of distraction factors on the user's experience perception and learning effect when using HMD-based immersive VR. Experimental results revealed that the distraction factors were shown to have a negative, albeit not generally significant (except for tactile interactivity), effect on vividness, tactile interactivity, locomotive interactivity, presence, and flow. Ultimately, they were shown to have a negative effect on learning.

• 대한인간공학회:학술대회논문집
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• 대한인간공학회 1997년도 춘계학술대회논문집
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• pp.183-189
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• 1997

In order to help develop more comfortable seat cover fabrics, this study primarily surveyed the actual using conditions and the consumers' opinions of the seat cover fabrics. The results of this study were as follows: 1) The colors of seat cover fabric were mostly achromatic. Regarding comsumers' satisfaction on the colors of seat cover fabric, comsumers in their 20's were less satisfied than other age groups. Most unsatisfied consumers prefered bright colors. 2) On the materials of seat cover fabric, synthethic leather and woven were most widely used. Real leather was most prefered due to its luxury and tactile sensation. Woven was secondarily prefered due to its price and tactile sensation. About fourty percent of consumers covered the seat with other cover fabrics because of soil and other reasons. It will be useful if they could choose and change the seat cover fabircs with different materials and colors. 3) When consumers used the seat cover fabrics, the problems that they indicated were not durability and colorfastness but low breathablity during sweating, static electricity, soil, firmness, and cool sensation at the first contact.

• 한국HCI학회:학술대회논문집
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• 한국HCI학회 2007년도 학술대회 1부
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• pp.25-31
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• 2007

본 논문에서는 질감제시장치와 진동모터를 내장한 펜형 햅틱(haptic) 인터페이스에 대해서 기술한다. 본 연구의 목적은 다양한 장치에 적용할 수 있는 소형 질감제시 모듈을 제안하고, 개발된 모듈을 펜과 같은 모양의 인터페이스에 내장하여 그 성능을 검증하는데 있다. 본 연구의 수행을 위해 핀배열을 내장하고 있으며, 저전력, 저소음으로 동작하며, 수직방향으로 1mm이상의 변위를 일으키는 소형 질감제시 모듈을 개발하였다. 그리고 개발된 모듈은 PDA나 Tablet PC등에서 흔히 사용되는 스타일러스(Stylus)와 같은 펜모양의 인터페이스에 내장되었다. 펜형 인터페이스의 헤드부분에는 팬케익 모터를 내장하여 사용자에게 진동 촉감을 제공할 수 있도록 하였다. 개발된 펜형 인터페이스의 성능을 검증하기 위하여Mobile Tablet PC상에서 내장된 질감제시 모듈이 점자정보를 촉감으로 전달할 수 있는지에 관한 실험을 수행하였으며, 모든 실험은 그래픽 사용자 인터페이스(GUI)상에서 이루어졌다. 또한 모든 버튼 조작시 '클릭'하는 느낌을 재현하였다. 실험은 동시에 다양한 자극의 주파수와 시간의 변화 조건에서 시행되어 의도하는 촉감을 가장 잘 전달하는 자극방법에 관한 연구를 동시에 수행하였다. 또한 개발된 펜형 인터페이스를 이용하여 이미지와 함께 데이터 베이스화 되어있는 질감을 재현할 수 있는 방법에 관한 기초 연구를 수행하였다.

• Fibers and Polymers
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• 제5권1호
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• pp.6-11
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• 2004

The purpose of this study is to analyze the subjective fabric hand of sleepwear fabrics, and to assist in developing sleepwear fabrics that offer maximum comfort in wearing sensation. In general, the respondents noted that sleepwear fabrics made with polyester had better tactile sensation than those made with cotton, while satin weave fabrics felt better than plain weave fabrics. As regards the difference in fabric hand according to gender, female students responded with more receptiveness and sensitivity than male students in the category of woven fabric evaluation. As regards the same textile materials, the evaluations of female students and male students differed in fabric hand descriptors, particularly for the evaluation on cotton fabrics. Male students responded that both plain weave fabrics and satin weave fabrics were stiff while female students replied that satin weave fabrics had better tactile sensation.

• 한국안전학회지
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• 제13권1호
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• pp.147-154
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• 1998

본 연구의 목적은 수공구 손잡이의 재질과 형태가 작업 성능과 소비자 만족도에 미치는 영향을 정량적으로 평가하는데 있다. 본 연구는 삽, 써래, 괭이 등 수공구의 손잡이에 기존의 목재를 사용한 것과 fiberglass를 사용한 것을 인간공학적 척도로 비교 분석하였다. 연구 결과 fiberglass 재질의 홈이 파진 손잡이를 사용한 수공구가 기존의 목재 손잡이를 사용한 수공구보다 약 12% 효율적이며, 소비자의 만족도 면에서도 우수한 것으로 나타났다.

• 복식문화연구
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• 제12권5호
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• pp.702-706
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• 2004

Sensorial tests were executed to find the sensibility and texture of the fabrics. The physiological responses employed in this study was electroencephalogram(EEG). The purpose of this study is to find out how the sample groups responded to the texture of the woven silks and the woven ramie. The sample groups are of 10 males and females, age of 25. EEG was recorded a fast and slow alpha wave according to the texture of the textiles. The sample fabrics are of woven silk and woven ramie. The results obtained as be lows. When the sample groups touched the woven silk, they responded and showed more slow alpha wave than the woven ramie. The slow alpha wave raised when the sample groups felt comfort and relax. The fast alpha wave were more in the woven ramie, it raised when the people felt the tension and the anxiety. There was no significant difference between the male and the female. Woven silk has the soft and smoothness it causes comfort. The sensation of tactile was recorded through the EEG.

• 방송과미디어
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• 제22권1호
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• pp.10-18
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• 2017

본 연구는 비접촉식 센서 기반의 웨어러블 디바이스를 이용한 딥러닝 기반의 제스처 인식에 대한 연구이다. 이를 위하여 Flexible MSG 센서를 기반으로 한 Flexible Epidermal Tactile Sensor를 사용하였으며, Flexible Epidermal Tactile Sensor는 손, 손가락 제스처를 취했을 때 손목, 손가락과 연결되어 있는 근육들의 움직임에 따라 발생하는 피부 표면의 전극을 취득하는 센서이다. 실험을 위하여 7가지 손, 손가락 제스처를 정의하였으며, 손목의 꺾임, 손목의 뒤틀림, 손가락의 오므림과 펴짐, 아무 동작도 취하지 않은 기본 상태에 대한 제스처로 정의하였다. 실험 데이터 수집에는 손목이나 손가락에 부상, 장애등이 없는 일반적인 8명의 참가자가 참가하였으며 각각 한 제스처에 대하여 20번씩 반복하여 1120개의 샘플을 수집하였다. 입력신호에 대한 제스처를 학습하기 위해 본 논문에서는 1차원 Convolutional Neural Network를 제안하였으며, 성능 비교를 위해 신호의 크기를 반영하는 특징벡터인 Integral Absolute Value와 Difference Absolute Mean Value를 입력신호에서 추출하고 Support Vector Machine을 사용하여 본 논문에서 제안한 1차원 CNN과 성능비교를 하였다. 그 결과 본 논문에서 제안한 1차원 CNN의 분류 정확도가 우수한 성능을 나타냈다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2006년도 춘계학술대회 논문집
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• pp.21-22
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• 2006

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• 로봇학회논문지
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• 제2권2호
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• pp.137-142
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• 2007

In an information-oriented society, visually impaired persons also should obtain the information with relative ease. They tend to receive the information of letters by tactile sensation through braille display systems. Several types of braille display systems have been suggested so far, but none of them have been widely used yet. The braille display system should provide multiple lines of braille units to improve the level of understanding. In this paper, we propose a cell type braille unit with $3{\times}2$ dots, each of which consists of a piezoelectric linear motor. A braille cell is small and lightweight enough to be portable, and it can be easily assembled in multiple lines. The preliminary tests using the proposed braille display system show that it can provide the information that can be well perceived by visually impaired persons.