• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2013년도 춘계학술대회 논문집
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• pp.663-664
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• 2013

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2010년도 춘계학술대회 논문집
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• pp.547-548
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• 2010

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 2004년도 춘계 학술발표대회 논문집
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• pp.64-65
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• 2004

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2002년도 ICCAS
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• pp.49.3-49
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• 2002

$\textbullet$ Surface Acoustic Wave $\textbullet$ Tactile Display Principle $\textbullet$ Installed on PC Mouse Button $\textbullet$ Vibration Measurement $\textbullet$ Demonstration on PC Screen $\textbullet$ Comparison Tests

• 한국감성과학회:학술대회논문집
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• 한국감성과학회 2012년도 춘계학술대회
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• pp.43-44
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• 2012

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2010년도 추계학술대회 논문집
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• pp.985-986
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• 2010

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2011년도 춘계학술대회 논문집
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• pp.1055-1056
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• 2011

• 감성과학
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• 제10권1호
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• pp.99-111
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• 2007

다양한 전통 견직물들을 대상으로 촉각적 감성요인을 추출하여 역학적 특성을 이용한 이들 감성 요인들의 예측 모델을 제시하고자, 남녀 대학생 53명을 대상으로 선 척도를 이용한 수정된 magnitude estimation에 의하여 서로 다른 종류의 17개 전통 견직물의 주관적인 촉감용어들과 촉각적 감성용어들을 평가하고 이들 직물의 역학적 특성과의 관계를 도출하였다. 주관적인 촉감에서 표면거칠기와 굽힘강성, 압축회복성 값이 작은 공단과 뉴똥은 전통 견직물 중에서 촉감이 가장 부드럽고 매끄러우며 폭신폭신하고 유연한 것으로 평가받은 반면, 굽힘강성과 표면거칠기, 인장회복성 값이 큰 노방주는 가장 까실까실하고 바삭거리며, 탄력있는 것으로 인지되었다. 전통 견직물의 촉각적 감성 평가에서 추출된 감성요인은 '페미닌'과 '내추럴, '캐주얼' 이었으며, 이중 '페미닌' 감성이 전통 견직물의 주요 촉각적 감성으로 사료되었다. 역학적 특성을 이용한 촉각적 감성요인의 예측모델에서 '페미닌' 감성은 표면거칠기에 의해 예측되어서 표면거칠기 값이 작은 직물일수록 '페미닌' 감성이 높아지는 경향을 보였는데, '페미닌' 감성이 긍정적으로 평가받은 전통 견직물에는 공단과 뉴똥, 명주의 일부가 포함되었다. ‘내추럴’ 감성의 예측모델에서 직물 두께가 얇고 인장회복성이 낮을수록 '내추럴‘ 감성이 높아지는 경향을 보였는데, 명주와 사 직물들의 '내추럴’ 감성이 긍정적으로 인지되었다. 또한 '캐주얼‘ 감성은 예측모델을 통하여 압축회복성과 최대신장성, 직물두께에 의해 부적 영향을 받는 것으로 나타났는데, 명주와 샨튱 직물이 전통 견직물 중에서 '캐주얼’ 감성이 가장 높은 것으로 나타났다.

• Journal of Periodontal and Implant Science
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• 제27권3호
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• pp.575-584
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• 1997

The quality of periodontal instrument cutting edge is a basic element of effective root planing procedure. Using instruments, the sharp edge is changed into blunt or beveled edge. With the blunt instrument, the periodontal treatment can't be carried into accuracy and effective. The study on the wear of periodontal curet is insufficient, there are few publications about the change of sharpness of cutting egde after using instrument and a certen reports were published on the study of scanning electron microscope(SEM) examination. In this study, to declare the number of strokes for sharpening of instruments, the changes of cutting edge is measured by the clinical methods, tactile sensitivity examination and refraction light-white line test after scaling strokes and root planing strokes. SEM test was added for defined the changes of cutting edges. The 7/8 Gracey curets that have been never used was tested. Maxillary molars which were extracted from the School of Dental Medicine, Dankook University was used. Subjected teeth had attachment loss more than 6 mm in bucca-lingual surface and sufficient calculus of a band type in cervical area. The strokes of curet were executed 3, 5, 7, 9, 11, 13 times on scaling stroke and 10, 15, 20, 25, 30, 35 times on root planing stroke. A resident has periodontal experience over 3 years carried out the clinical examinations those tactile sensitivity examination and refraction light-white line test 5 times. The case there being tactile sensitivity certenly is 2, the case being felt tactile sensitivity is 1, and the case there not being tactile sensitivity is 0. The visual examination was recorded as following. The case that refracted white line is not recognised is 2, the case that uncerten is 1, and the case that acknowledged is 0. The results were obtained as follows. 1. After scaling strokes, the tactile sensitivity was reduced after 11 strokes and disappeared in 13 strokes. 2. In tactile sensitivity after root planing procedures, sensitivity was reduced after 25 strokes and disappeared in 35 strokes. 3. In case of visual examination, the detection of refracted white line was increased after 9 strokes of scaling procedures and the accuracy of wear wasn't showed after root planing procedures. 4. In SEM, metal projection was observed on new periodontal curet cutting edge and it was disappeared after scaling procedures. 5. In SEM, the cutting edge was showed changing linear into an aspect of the surface after 5 strokes of scaling procedures and 10 strokes of root planing procedures and showed beveled edge in 11 strokes of scaling procedures, 25 strokes of root planing procedures. The results of 3-type examination indicated that the sharpening of curet should be performed after 11 strokes of scaling procedures and 25 strokes of root planing procedures.

• 제어로봇시스템학회논문지
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• 제21권6호
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• pp.583-588
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• 2015

Flexible tactile sensors can provide valuable feedback to intelligent robots regarding the environment around them. This is especially important when robots such as, service robots share a workspace with humans. This paper presents a contact force measurement algorithm of a flexible tactile sensor. This sensor is manufactured by a direct-writing technique, which is one 3D printing method, using multi-walled carbon nano-tubes. An analog signal processing circuit has been designed and implemented to reduce noise contained in the sensor output. In addition, a digital version of the Butterworth filter was implemented by software running on a microcontroller. Through various experiments, characteristics of the sensor system have been identified. Based on three traits, an algorithm to detect the contact and measure the contact force has been developed. The entire system showed a promising prospect to detect the contact over a large and curved area.