• Perspectives in Nursing Science
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• 제17권2호
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• pp.72-79
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• 2020

Purpose: This study sought to verify the effectiveness of the Nurse Hand Cream developed to protect the skin of the hands of nurses damaged by frequent hand hygiene. Methods: A randomized controlled trial was conducted that compared the hand skin moisture content of subjects using the Nurse Hand Cream that had been developed for nurses with that of the other hand cream. Results: After applying the hand cream, the subjects' skin moisture content were measured using a skin moisture measuring device; the moisture content of the experimental group significantly increased compared with the control group (p<.001). In particular, as a result of the second experiment that involved the four-time performance of hand hygiene every 30 minutes for two hours, the skin moisture content of the experimental group significantly increased compared with the control group, and 84.4% of the experimental group maintained a normal or higher skin moisture content. Conclusion: The hand cream for nurses was statistically confirmed to strengthen the moisturizing power and prevention of skin moisture loss compared with the other hand cream.

• 제어로봇시스템학회논문지
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• 제15권3호
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• pp.300-305
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• 2009

This paper describes the intelligent robot's hand with three-axis finger force sensors for an intelligent robot. In order to grasp an unknown object safely, it should measure the mass of the object, and determine the grasping force using the mass, then control the robot's fingers with the grasping force. In this paper, the intelligent robot's hand for an intelligent robot was developed. First, the three-axis finger force sensors were designed and manufactured, second, the intelligent robot's hand with three-axis finger force sensors were designed and fabricated, third, the high-speed control system was designed and manufactured using DSP( digital signal processor), finally, the characteristic test to grasp an unknown object safely was carried out. It was confirmed that the developed intelligent robot's hand could grasp an unknown object safely.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2007년도 가을 학술발표논문집 Vol.34 No.2 (C)
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• pp.263-266
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• 2007

We introduce a vision-based hand gesture recognition fer understanding musical time and patterns without extra special devices. We suggest a simple and reliable vision-based hand gesture recognition having two features First, the motion-direction code is proposed, which is a quantized code for motion directions. Second, the conducting feature point (CFP) where the point of sudden motion changes is also proposed. The proposed hand gesture recognition system extracts the human hand region by segmenting the depth information generated by stereo matching of image sequences. And then, it follows the motion of the center of the gravity(COG) of the extracted hand region and generates the gesture features such as CFP and the direction-code finally, we obtain the current timing pattern of beat and tempo of the playing music. The experimental results on the test data set show that the musical time pattern and tempo recognition rate is over 86.42% for the motion histogram matching, and 79.75% fer the CFP tracking only.

• 한국콘텐츠학회논문지
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• 제22권1호
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• pp.274-282
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• 2022

보행자의 보행권 확보를 위해 기존 보행자 교통사고의 원인, 진단, 감소 방안을 모색하는데 있어 기존 조사방식, 분석방법, 진단 등의 한계성을 극복하기 위한 대체방안으로 중고스마트폰을 활용한 모바일 CCTV 활용방안을 제시하였다. 중고스마트폰을 업사이클링하여 모바일CCTV를 제작하였고 보행사망사고가 다수 발생하는 지역에 설치하여 24시간 이상의 영상데이터를 확보하였다. 영상시각화 기술과 클라우딩 리포팅(Crowding Reporting) 기술을 적용하여 분석하였으며, 인공지능 학습기반의 모델링과 GIS 기반의 진단지도를 통해 더욱 정밀하고 정확한 결과를 도출하였다. 그 결과 보행안전 위험요인과 횟수를 분석할 수 있었으며, 기존 방식으로는 알 수 없었던 요인까지 도출할 수 있었다. 또한 중고스마트폰 업사이클링 모바일 CCTV가 보행위험요인을 찾는데 객관적 도구가 될 것인지 검증하기 위해 데이터를 1년으로 환산하여 교통사고 위험지수를 도출하였다. 연구를 통해 새롭게 적용된 중고스마트폰의 업사이클링 모바일 CCTV는 보행자의 보행위험요인을 찾는데 새로운 도구로 활용이 가능하며, 이를 발전시켜 보행자외 교통약자의 안전을 지키는 서비스로 활용이 가능할 것이다.

• Imaging Science in Dentistry
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• 제37권2호
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• pp.65-68
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• 2007

Purpose: To compare the leakage and scattered radiation from hand-held dental X-ray unit with radiation from fixed dental X-ray unit. Materials and Methods: For evaluation we used one hand-held dental X-ray unit and Oramatic 558 (Trophy Radiologie, France), a fixed dental X-ray unit. Doses were measured with Unfors Multi-O-Meter 512L at the right and left hand levels of X-ray tube head part for the scattered and leakage radiation when human skull DXTTR III was exposed to both dental X-ray units. And for the leakage radiation only, doses were measured at the immediately right, left, superior and posterior side of the tube head part when air was exposed. Exposure parameters of handheld dental X-ray unit were 70 kVp, 3 mA, 0.1 second, and of fixed X-ray unit 70 kVp, 8 mA, 0.45 second. Results: The mean dose at the hand level when human skull DXTTR III was exposed with portable X-ray unit $6.39{\mu}Gy$, and the mean dose with fixed X-ray unit $3.03{\mu}Gy$ (p<0.001). The mean dose at the immediate side of the tube head part when air was exposed with portable X-ray unit was $2.97{\mu}Gy$ and with fixed X-ray unit the mean dose was $0.68{\mu}Gy$ (p<0.01). Conclusions: The leakage and scattered radiation from hand-held dental radiography was greater than from fixed dental radiography.

• Journal of Korean Biological Nursing Science
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• 제14권3호
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• pp.156-165
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• 2012

Purpose: This study was conducted to test the effect of the Hand Hygiene Education Program on hand hygiene knowledge, hand hygiene perception, nasal Staphylococcus aureus colonization and hand hygiene adherence in nursing students. Methods: A non-equivalent pre-post test of quasi-experimental design was used. 87 second grade nursing students participated in the study with 43 in the experimental group and 44 in the control group. We used the Hand Hygiene Education Program which was held 5 times over 5 weeks, taking 60 minutes per session. For the analysis, descriptive statistics, chi test, and t-test were used for statical analysis with SPSS 19.0. Results: There were significant increases in hand hygiene knowledge (p=.004) and hand hygiene adherence (p=.002) and there was a significant decrease in nasal Staphylococcus aureus colonization (p=.026) in the experimental group compared to the control group. However, hand hygiene perception (p=.543) was not significantly changed. Conclusion: Findings of this study suggest that the Hand Hygiene Education Program may be effective in enhancing hand hygiene knowledge and hand hygiene adherence. Also this program was effective in reducing nasal Staphylococcus aureus colonization in nursing students. Further studies are needed to evaluate the effects of the Hand Hygiene Education Program on hand hygiene perception in nursing students.

• 한국정보통신학회논문지
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• 제15권7호
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• pp.1564-1572
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• 2011

본 논문에서는 증강현실을 위한 히스토그램 기반의 손 인식 기법을 제안한다. 손동작 인식은 사용자와 컴퓨터 사이의 친숙한 상호작용을 가능하게 한다. 하지만, 비젼 기반의 손동작 인식은 복잡한 손의 형태로 인한 관찰 방향 변화에 따른 입력 영상의 다양함으로 인식에 어려움이 따른다. 따라서 본 논문에서는 손의 형태적인 특징을 이용한 새로운 모델을 제안한다. 제안하는 기법에서 손 인식은 카메라로부터 획득한 영상에서 손 영역을 분리하는 부분과 인식하는 부분으로 구성된다. 카메라로부터 획득한 영상에서 배정을 제거하고 피부색 정보를 이용하여 손 영역을 분리한다. 다음으로 히스토그램을 이용하여 손의 특징점을 구하여 손의 형태를 계산한다. 마지막으로 판별된 손인식 정보를 이용하여 3차원 객체를 제어하는 증강현실 시스템을 구현하였다. 실험을 통해 제안한 기법의 구현 속도가 빠르고 인식률도 91.7%로 비교적 높음을 확인하였다.

• 한국정보처리학회논문지
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• 제7권5호
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• pp.1317-1329
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• 2000

The advanced techniques for video processing and computer graphics enables a sign language education system to appear. the system is capable of showing a sign language motion for an arbitrary sentence using the captured video clips of sign language words. In this paper, a method is suggested which generates the frames between the last frame of a word and the first frame of its following word in order to animate hand motion. In our method, we find hand locations and angles which are required for in between frame generation, capture and store the hand images at those locations and angles. The inbetween frames generation is simply a task of finding a sequence of hand angles and locations. Our method is computationally simple and requires a relatively small amount of disk space. However, our experiments show that inbetween frames for the presentation at about 15fps (frame per second) are achieved so tat the smooth animation of hand motion is possible. Our method improves on previous works in which computation cost is relativey high or unnecessary images are generated.

• The Journal of Korean Physical Therapy
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• 제26권6호
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• pp.425-429
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• 2014

Purpose: The first purpose of this study was to evaluate whether hand muscle fatigue alters sensorimotor control of the hand in healthy subjects, using hand position sense. The second objective was to assess the repositioning variables during a 7.5-min period after the fatigue protocol. Methods: Participants performed a repeated handgrip movement to induce the fatigue condition as fast as possible, until they could no longer continue. Recordings were performed before (pre-fatigue) and after the completion of the fatigue exercises (immediately: post-fatigue, after a 2.5 min recovery, after a 5 min recovery and after a 7.5 min recovery). Results: The joint reposition test of the MP joint in the post-fatigue condition showed higher reposition errors than the prefatigue condition (p<0.05). Additionally, there was a significant difference in recovery of joint reposition errors after fatiguing exercises of the hand muscle, among groups (p<0.05). Conclusion: The fatigue of the hand muscles affected joint position sense by an alteration of somatosensory and proprioceptive information. Nonetheless, the effect of hand muscle fatigue was short-lived, since joint reposition errors decreased to post-fatigue values after 7.5 min of recovery.

• 한국전문물리치료학회지
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• 제16권4호
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• pp.8-15
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• 2009

Grip strength is an objective indicator for evaluating the functional movement of upper extremities. Therapists have been using it for a long time as an excellent barometer for evaluating the therapy process, therapeutic effects and prognosis of patients with injuries in upper extremities. This study investigated the effects of extensor pattern position and elastic taping of non-dominant hand on the grip strength of dominant hand among general adults. The subjects of this study were 23 males and 7 females from physical therapy departments of 3 Universities located in Busan who agreed to participate in the experiment and the resultant data were analyzed using SPSS version 12.0. The results of the study were as follows. First, there was a significant difference between the grip strength of dominant hand when the non-dominant hand was at the neutral position and that when the non-dominant hand was at the extensor pattern position and both hands were at the maximum strength simultaneously (Bonferroni-corrected p<.001). Second, there was a significant difference between the grip strength of dominant hand when the non-dominant hand was at the neutral position and that when the elastic taping of non-dominant hand was applied (Bonferroni-corrected p<.001). Third, there was no significant difference between the grip strength of dominant hand when the non-dominant hand was at the extensor pattern position and both hands were at the maximum strength simultaneously and that when the elastic taping of non-dominant hand was applied. The irradiation effects through the extensor pattern position of non-dominant hand and application of the elastic taping to non-dominant hand showed significant results in improving the maximum grip strength of dominant hand. This finding could be suggested as the probability for the indirect treatment of the upper extremities of hemiplegia and orthopedic patients due to the long-term fixing of upper extremities.