• 한국의류산업학회지
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• 제19권2호
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• pp.240-248
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• 2017

This study compares general jacquard fabrics and jacquard fabrics with optical fiber on mechanical properties, sensibility and preference evaluation of fabric for the blind. The analysis also assesses the effect of optical fiber in the evaluation and identifies those best suited for consumers. The mechanical properties of jacquard fabrics were measured by the KES-FB system. Sensibility and the preference of the jacquard fabric for the blind were rated on tactile sensation by women experts in their 20's and 30's. It was found that the optical fiber in jacquard fabric affected the change of mechanical properties as well as sensibility and preference. Jacquard fabric with optical fiber were softer and more transformable, while the fabrics had lower recover property by shear force and compression as well as more violent unevenness. Jacquard fabrics were also classified into three hand factors of surface property, resilience and weightiness. There were significant differences on surface property perceptions and weightiness, hand and blind preferences by optical fiber. Jacquard fabrics that contained optical fiber were not preferred by the blind because they were perceived to be uneven and heavy. Those, that were smooth and light, were preferred for jacquard fabric; in addition, fabrics preferred by the blind had good compression.

• 한국생활과학회지
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• 제6권2호
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• pp.115-120
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• 1997

To investigate the cognition of labeling system and its problems, problems in laundry, and consumer's dissatisfaction and to decrease problems in management of clothing products, total 476 subjects were surveyed in Taejon. The major results were as follows ; 1. The cognition of labeling system was understood by 93.1% of respondents, and 72.9% of them prefer to recognized labeling by figures and letters than by either of them. Most of respondents got the knowledge of labeling system from school. The most frequently experienced mislabeling was the label for management. 2. In cleaning, 60.4% of respondents made their decisions of the laundry method after seeing labeling system. When the label recommanded either of hand washing or dry cleaning, they usually laundered with hand washing after a few times of dry cleaning. The first consideration factor for laundry was fiber composition of textiles. 3. About 70% of respondents understood ironing, laundry, and drying mark on labeling system, and 53.8% understood fiber composition and bleaching. 4. More than 90% of respondents experienced dissatisfaction in handling clothing products. The reason of dissatisfaction was deformation and decoloring after laundry. Most of respondents experienced change of tactile sensation, too.

• 한국컴퓨터그래픽스학회논문지
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• 제14권2호
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• pp.1-8
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• 2008

본 논문은 사용자가 카메라와 트래커가 부착된 HMD를 착용하고, 햅틱 장비를 사용하여 혼합현실 환경 상에서 기계적 상황훈련을 수행하는 시스템에 대하여 설명한다. 본 시스템은 발달장애인들의 시지각 협응능력 향상을 위해 도출된 기계적 상황훈련에 대한 시나리오를 기반으로 한다. 사용자는 HMD를 통해 보여 지는 가상의 핀을 햅틱으로 제어하여 작업판에 꽃는 상황훈련을 수행하고, 시스템은 FSM(Finite State Machine)기반으로 사용자의 행동에 맞는 피드백을 전달한다. 또한, 상황훈련에 대한 현실감을 높여 훈련 효과를 증대시키기 위해 가상 환경에 실제 사용자의 손을 삽입하고, 햅틱을 통해 촉감을 전달한다.

• 한국콘텐츠학회논문지
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• 제20권10호
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• pp.199-215
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• 2020

본 연구의 목적은 반려견의 행복한 삶 영위를 위한 반려견의 입장 이해이다. 반려견의 정서에 감각 자극이 미치는 영향을 알아보기 위해 실험과 설문 조사가 진행되었다. 감각은 시각, 청각, 후각, 촉각, 복합으로, 정서는 깊은 수면의 비율, 사료 섭취량, 심박 수로 나누어서 측정되었다. 연구 결과, 반려견의 정서에 복합 자극(산책)이 가장 긍정적이지만, 시각 자극과 청각 자극은 평소 상태에 긍정적인 변화를 주는 자극으로 크게 작용하지 않는다. 후각 자극은 복합 자극 다음으로 정서에 긍정적인 감각 자극이다. 반려견의 상태에 큰 편차 없이 평온한 상태를 유지하는 데 효과적인 후각 자극은 복합 자극을 할 수 없는 예외 상황에서 반려견의 스트레스 해소 방법으로 활용될 수 있다. 한편, 촉각 자극인 목욕은 반려견 대부분에게 수면 과다증과 폭식을 유발하는 부정적 감각 자극이다.

• 대한지역사회영양학회지
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• 제2권2호
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• pp.179-186
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• 1997

A new bioelectrical impedance method has been developed and evaluated. The electrodes; were made of stainless steel and electrical interfaces were created by an upright subject gripping hand electrodes and stepping onto foot electrodes. Eight tactile electrodes were in contact with surfaces of both hands and feet; thumb, palm and fingers, front sole, and rear sole. Automatic on-off switches were used to change current pathways and to measure voltage differences for target segments. Segmental body resistances and whole body resistance(RWHOLE)were measured in 60 healthy subjects. Segmental resistances of right arm(RRA), left arm(RLA), trunk(RT), right leg(RRL) and left leg(RLL)were310.0$\pm$61.6$\Omega$, 316.9$\pm$64.6$\Omega$, 25.1$\pm$3.4$\Omega$, 236.8$\pm$31.2$\Omega$ and 237.6$\pm$30.4$\Omega$, respectively. Individual segmental impedance indexes(Ht2/RRA, Ht2/RT, and Ht2 /RLA) were closely related to lean body mass(LBM)as measured by densitometry ranged from r=0.925 to 0.960. Ht2/(RRA+RT+RLA) predicted LBM slightly better(r=0.969) than the traditional index, Ht2/RWHOLE(r=0.964), supporting the accuracy of the segmental measurement. A multiple regression equation utilizing Ht2/RRA, Ht2/RT and Ht2/RRL predicted LBM with r=0.971. Ht2/RRA term of the regression contributed to more than 40$\%$ of the LBM prediction, indicating that lean mass of arm represented whole body LBM more closely than other body segments. The new bioimpedance method was characterized by upright posture, eight tactile electrodes, segmental measurements and utilization of electronic switches in comparison with the traditional method. The measurement with this new method was extremely reproducible, quick and easy to use.

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제10권2호
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• pp.189-198
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• 2004

디스플레이 디바이스가 발전함에 따라 컴퓨터를 이용한 작업 환경이 응용 목적에 보다 적합한 형태로 변환하고 있다. 본 논문에서는 테이블 형태의 프로젝션 시스템인 가상테이블을 이용하여 건축 디자인 시스템의 개발에 관하여 고찰한다. 개발된 시스템은 인터랙티브 VR 모델러, 하이브리드 트랙커, 건축용 인터프리터로 구성되어 있다. 인터랙티브 VR 모델러는 가상테이블 상에서 건축 디자인을 보다 쉽고 직관적으로 할 수 있도록 그리드 인터랙션, 텐져블 프랍, 참조 객체와 같은 비주얼 및 택타일 가이드를 제공한다. 하이브리드 트랙커는 사용자 시야각에 따른 임의의 뷰포인트를 제공하는 기능과 핸드 인터랙션을 위한 비전 기반 트랙킹과 마그네틱 트랙킹을 포함하고, 건축용 인터프리터는 간단한 삼차원 매스를 건축적 정보를 포함한 기본 구성요소로 자동 변환하는 기능을 한다 제안 시스템은 다수의 사용자가 공동 작업을 하기에 적절하며 입체적인 뷰를 통하여 그래픽스 객체를 삼차원 공간에서 직접 조작할 수 있다는 장점이 있다. 이와 같이 본 시스템은 건축 시뮬레이션 및 사용자 참여 디자인에 유용하게 사용되어질 수 있다.

• Restorative Dentistry and Endodontics
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• 제42권1호
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• pp.48-53
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• 2017

Objectives: The aim of this study was to investigate the ability of the fluorescence-aided caries excavation (FACE) device to detect residual caries by comparing conventional methods in vivo. Materials and Methods: A total of 301 females and 202 males with carious teeth participated in this study. The cavity preparations were done by grade 4 (Group 1, 154 teeth), grade 5 (Group 2, 176 teeth), and postgraduate (Group 3, 173 teeth) students. After caries excavation using a handpiece and hand instruments, the presence of residual caries was evaluated by 2 investigators who were previously calibrated for visual-tactile assessment with and without magnifying glasses and trained in the use of a FACE device. The tooth number, cavity type, and presence or absence of residual caries were recorded. The data were analyzed using the Chi-square test, the Fisher's Exact test, or the McNemar test as appropriate. Kappa statistics was used for calibration. In all tests, the level of significance was set at p = 0.05. Results: Almost half of the cavities prepared were Class II (Class I, 20.9%; Class II, 48.9%; Class III, 20.1%; Class IV, 3.4%; Class V, 6.8%). Higher numbers of cavities left with caries were observed in Groups 1 and 2 than in Group 3 for all examination methods. Significant differences were found between visual inspection with or without magnifying glasses and inspection with a FACE device for all groups (p < 0.001). More residual caries were detected through inspection with a FACE device (46.5%) than through either visual inspection (31.8%) or inspection with a magnifying glass (37.6%). Conclusions: Within the limitations of this study, the FACE device may be an effective method for the detection of residual caries.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 학술대회 논문집 정보 및 제어부문
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• pp.78-80
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• 2005

Haptic interface apparatus is the device which can offer users virtual reality not only by visualization of virtual space but also by force or tactile feedback. In this paper, we designed and fabricated a 2D haptic interface device that can be used for various purposes, and implemented a virtual air-hockey system that users can easily find in game rooms. By suitable modeling and haptic rendering, users can feel the impact and the reaction force with his/her hand holding the handle through 2D haptic interface device when he/she hit an air-hockey puck with the handle. Through the trial demonstration. we observed the reasonable effect of direction and speed of a ball like doing in reality.

• 한국감성과학회:학술대회논문집
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• 한국감성과학회 1999년도 춘계학술발표논문집 논문집
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• pp.153-157
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• 1999

Voigt Model assumed for creep was used to obtain the viscoelastic properties of fabrics in thickness direction and the governing equation was derived. The weights were specially designed and calibrated for constant stress applied to fabrics and the 1 ${\mu}{\textrm}{m}$ resolution laser displacement sensor was attached in order to measure the variation of strain. Ten fabric samples were used. The few steps of strain showed according to the internal structure of fabrics. Also correlations the Hand Values from KESF with the spring and damping coefficients were considered.

• 한국생활과학회지
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• 제15권3호
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• pp.397-404
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• 2006

The purpose of this study is to analyze the subjective sensations and preference for spring/fall casual cotton shirt fabrics, and to assist in developing shirt fabrics that offer maximum comfort in wearing sensation. The subjects of this study were male and female college students who assessed the tactile sensation of seven types of spring/fall shirt fabrics available on the market: plain weave and rib weave made of cotton and that of cotton mixed fabrics. The subjects were university students between the ages of 20 to 23, who were residing in the city of Cheongju, Korea. The questionnaires related to the fabrics hand were evaluated using a nine point bi-polar scale of 9 descriptive terms. Mean, t-test, F-test and $X^2$ were used for data analysis. The fabric hand evaluation on the seven types of shirts showed a significant difference in all of the 9 descriptive terms. There were partially significant differences in the subjective sensations according to fabric characteristics regarding shirt 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. In particular, female students responded with more sensitivity to the sensation of dense and wrinkle sensations. There were significant differences in the purchase preference according to gender regarding casual shirt fabrics. Plain weave fabrics made of cotton was most preferred among male students, whereas rib weave fabrics made of cotton/polyester was most preferred among female students.