• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1991년도 한국자동제어학술회의논문집(국제학술편); KOEX, Seoul; 22-24 Oct. 1991
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• pp.1779-1784
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• 1991

The problem of fine manipulation is considered in this paper. By fine manipulation, we mean the positioning of the object relative to the palm as opposed to gross manipulation by the arm. The compliance in the fingers and the object is modeled by linear springs. It is shown that the motion of the fingers and object can be predicted by minimizing a quadratic objective function. A method for simulating position control algorithms is developed.

• International Journal of Control, Automation, and Systems
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• 제5권4호
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• pp.436-443
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• 2007

In this paper, an intelligent method called BELBIC (Brain Emotional Learning Based Intelligent Controller) is used to control of Locally Linear Neuro-Fuzzy Model (LOLIMOT) of Washing Machine. The Locally Linear Neuro-Fuzzy Model of Washing Machine is obtained based on previously extracted data. One of the important issues in using BELBIC is its parameters setting. On the other hand, the controller design for Washing Machine is a multi objective problem. Indeed, the two objectives, energy consumption and effectiveness of washing process, are main issues in this problem, and these two objectives are in contrast. Due to these challenges, a Multi Objective Genetic Algorithm is used for tuning the BELBIC parameters. The algorithm provides a set of non-dominated set points rather than a single point, so the designer has the advantage of selecting the desired set point. With considering the proper parameters after using additional assumptions, the simulation results show that this controller with optimal parameters has very good performance and considerable saving in energy consumption.

• 한국생활과학회지
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• 제14권4호
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• pp.665-671
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• 2005

This study aims to examine the effect of structural properties, subjective textures, sensibilities, and objective handle on the preference for weft knit fabrics, and then to provide useful information in planning and designing knit fabrics through predicting the preference. We made 20 plain knit fabrics, as specimens, with a combination of 5 kinds of wool/rayon fiber contents and 4 kinds of stitch loop length. For the subjective evaluation of textures, sensibilities, and preference, we used the questionnaire that had been developed in the previous study. The data analysis was conducted with Pearson's correlation analysis, ANOVA, Duncann multiple range test and regression analysis. The results are as follows: In relationship of structural properties and preference, we could not recognize any difference in whole ranges of wool/ rayon fiber contents and in 7.5mm and less stitch loop length. On the other hand, we could find the decrease of preference in over 7.5mm stitch loop length. As to subjective textures and sensibilities, a multiple regression analysis of preference indicated a higher determination coefficient by sensibilities than by textures. But there were little correlation between a objective handle and preference of weft knit fabrics.

• 한국간호교육학회지
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• 제15권2호
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• pp.175-182
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• 2009

Purpose: Objective Structured Clinical Examination (OSCE) is a good way to evaluate clinical skills of nursing students. To do this, we need modules, evaluators, persons to run the examination, as well as models and standardized patient care if necessary. The main purpose of this study was to compare the effects of the OSCE method on nursing skills performance of students enrolled in a core skill lab of nursing courses. Method: Eight items were developed for the examination. Five minutes was allowed for each item. Two married women and third-year students played patient's roles. The participants were 2nd-year nursing students and the OSCE program was performed on December, 2008. Data analysis was done using SPSS WIN 12.0. Result: The evaluation score for BP check skill was 1.68 and hand washing skill was 1.87 by evaluators. Response of examinees to OSCE was favorable. Examinees did not express resistance for evaluation by OSCE run by SPs and students. Conclusion: The OSCE method is an effective tool for evaluating clinical nursing skills performance in student nurses. It is necessary to explore more efficient ways to develop OSCE cases in wider areas of nursing education. It is also recommended to replicate similar studies in nursing education.

• 한국식품위생안전성학회지
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• 제26권2호
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• pp.154-159
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• 2011

부적절한 식품취급과 불량한 손 위생관리는 식품매개성 질환 발생에 주요한 역할을 한다. 본 연구는 조리 중 손의 미생물(일반세균, 총대장균군, 분변성대장균군, 대장균, 황색포도상구균 및 살모넬라) 오염도의 경시적 변화를 알아 보고자 수행되었다. 시료 채취는 음식점 조리종사자 20명의 왼손과 오른손에서 조리 전부터 조리 후까지 2시간 간격으로 glove-juice method에 의하여 수행하였다. 미생물 시험은 식품공전에 따라 수행하였다. 손의 미생물 오염도는 시간 경과에 따라 변화하였으며 조리 전과 8시간 후에 높게 나타났다(p < 0.05). 왼손보다 오른손에서 미생물 오염도가 일관되게 높았다. 일부 조리종사자의 손에서 총대장균군 분변성 대장균군, 대장균, 황색포도상구균 및 살모넬라가 검출되어 손 위생관리가 불량한 것으로 보인다. 본 연구결과는 이들 조리종사자의 손이 조리 중 미생물 전파매개 체가 될 수 있음을 제시한다. 본 연구는 또 식품안전을 확보하기 위하여 이들 조리종사자의 손 위생관리 향상을 위한 교육 및 훈련이 더 필요함을 제시한다.

• 대한작업치료학회지
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• 제26권4호
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• pp.43-55
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• 2018

목적 : 본 연구는 피젯 스피너를 활용하여 초등학교 저학년 아동의 손 기능과 글씨쓰기 명료도에 미치는 영향을 알아보고자 하였다. 연구방법 : 본 연구는 일반아동 중 우세손이 우측인 1~2학년(만 7~8세) 아동 24명을 대상으로 실험군 12명, 대조군 12명으로 무작위 분류하여 실시하였다. 연구 설계는 사전-사후 설계이다. 중재는 실험군 아동들에게만 실시하였으며, 5주간, 주 2회, 1회 당 40분씩 총 10회기로 진행하였다. 측정도구로는 중재 전, 후의 손 기능과 글씨쓰기 명료도의 비교를 위하여 젭슨-테일러 손 기능 검사(Jebsen-Taylor Hand Function Test; JHFT)와 장악력 검사(Grip Strength Test; GST) 그리고 명료도 검사(Legibility Test; LT)를 사용하였다. 자료 분석은 Wilcoxon signed rank 검정과 Mann-Whitney U 검정, 그리고 교차분석의 카이제곱 검정을 사용하였다. 결과 : 피젯 스피너 훈련은 실험군의 손 기능과 장악력, 글씨쓰기 명료도에 유의한 향상을 보였으며, 실험군과 대조군 사이의 유의한 차이를 보였다. 결론 : 본 연구는 초등학교 저학년 아동의 손 기능과 글씨쓰기 명료도를 효과적으로 향상시키는 도구로써 피젯 스피너의 가치 및 효용성을 확인하였다. 이에 향후 연구에서는 본 연구를 토대로 피젯 스피너 훈련의 효과를 검증하는 다양한 연구가 이어지길 기대한다.

• 디자인학연구
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• 제14권
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• pp.181-191
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• 1996

$\ulcorner$ID생산성$\lrcorner$이란 $\ulcorner$인더스트리얼 디자인$\lrcorner$(Industrial Design; 이하 ID로 약칭)과 $\ulcorner$생산성$\lrcorner$(Productivity)을 결합한 용어로서 그 개념은 상품의 디자인개발에 투입된 모든 디자인자원 및 요소의 효율적인 이용도를 나타내는 지표로 설명될 수 있다. $\ulcorner$ID생산성$\lrcorner$은객관 적인 방법과 주관적인 방법 두 가지 측면에서 측정 할 수 있다. 전자는 투입과 산출의 관계를 가능한 객관적, 정량적으로 분석한다는 방식이며, 후자는 ID의 방법 자체가 극히 주관적이라는 특성을 전제로 하여 $\ulcorner$ID생산성$\lrcorner$을 가능한 한 정상적으로 분석하는 방법이다. 전자는 디자인 시간, 디자이너 수 , 경비를 공통의 투입요소로 사용하여 개인별.요소별.디자인문문 전체의 디자인 생산성 측정 그 자체가 불가능하며 신뢰성이 없는 단점이 있다. 후자는 Good Design을 산출요소로 사용하여 개인 및 디자인 부문 전체의 합리적 디자인 생산성 측정이 가능한 반면, 주관적 평가를 위한 설문조사나 분석방법 절차 등이 번거러운 단점이 있다. 그러나 이 방법은 전자보다는 매우 합리적이며 신뢰도가 높다는 이점이 있다.

• The Journal of Korean Physical Therapy
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• 제20권3호
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• pp.45-51
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• 2008

Purpose: We evaluated the physical stress and pain to the musculoskeletal system of a dental practitioner when engaging in a dental scaling training exercise to prevent the development of musculoskeletal injuries. Methods: The 18 female (average age: 21$\pm$1 years) subjects were voluntarily picked from a group of juniors who have completed a one-and-a-half year training course that includes training exercises on the dentiform and on live subjects (other trainees). The test is done by measuring pain, activity, grip strength, and finger dexterity for each subject's hand and wrist. Before the test all subjects were confirmed to be right-handed and were informed of the study and its objective. Measuring was done before and after each subject performed dental scaling for one hour using the scaler and the curet. Results: Pain levels increased for both hand and shoulders, but hand pain was often greater than shoulder pain. Grip strength significantly declined in the right hand but not the left. For joint mobility, the flexion and the extension for the shoulder joint did not change; but the range of motion for both wrist joints significantly increased. For the dexterity test, both hands showed increased dexterity after the exercise. Conclusion: Dental scaling can affect the shoulders and wrists/hands. Therefore, a musculoskeletal injury prevention program for dental practitioners, which may include encouraging them to assume correct body posture when at work, must be sought. This study evaluated only the shoulders, wrists, and hands; but future studies should include areas such as the cervical area, the back, and the lower limbs.

• 한국전문물리치료학회지
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• 제15권4호
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• pp.43-49
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• 2008

The objective of this study was to compare the differences on the activity and power of the wrist flexors and extensors in subjects before the use of a wrist extension splint, after nighttime wearing of the splint, and after daytime wearing of the splint. Ten healthy male and ten healthy female students (mean: $22.4{\pm}1.2$ years old) volunteered to wear custom-made wrist splints either during the night or during the day, The hand force of the wrist flexor and extensor, and grip force were measured by PowerTrack II and Dynatron, respectively. At the same time, the activities of the wrist flexor and extensor were recorded by' surface electromyography. The maximal hand force and motor unit recruitment of the flexor carpi ulnatis (FCU) increased significantly (p<.05) when tile subjects wore the wrist splints during the daytime, but the maximal hand power of the FCU decreased with nighttime use of the splints. The maximal hand power and motor unit recruitment of the extensor carpi radialis (ECR) and the ECR/FCU ratio decreased both during nighttime and daytime use. The decrement of the ECR/FCU ratio was significant (p<.05). Wearing a wrist extension splint during nighttime led to the maintenance of a lengthened position of the wrist flexor, resulting in the wrist flexor becoming weak. Wearing a wrist extension splint during the day induced the wrist flexors to be greater. In healthy people, the imbalance between the wrist flexors and extensors may be caused by the use of a wrist extension splint. This study indicates that therapists have to consider whether a splint will be effective, as well as the wearing time, when prescribing splints to people with problems of the musculoskeletal system.

• Journal of Korean Neurosurgical Society
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• 제61권1호
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• pp.75-80
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• 2018

Objective : Among the various sacropelvic fixation methods, S2 alar-iliac (S2AI) screw fixation has several advantages compared to conventional iliac wing screw. However, the placement of S2AI screw still remains a challenge. The purpose of this study was to describe a novel technique of free hand S2AI screw insertion using a K-wire and cannulated screw, and to evaluate the accuracy of the technique. Methods : S2AI screw was inserted by free hand technique in sixteen consecutive patients without any fluoroscopic guidance. The gearshift was advanced to make a pilot hole passing through the sacroiliac joint and directing the anterior inferior iliac spine. A K-wire was placed through the pilot hole. After introducing a cannulated tapper along with the K-wire, a cannulated S2AI screw was installed over the K-wire. Results : Thirty-three S2AI screws were placed in sixteen consecutive patients. Thirty-two screws were cannulated screws, and one screw was a conventional non-cannulated screw. Thirty out of 32 (93.8%) cannulated screws were accurately positioned, whereas two cannulated screws and one non-cannulated screw violated lateral cortex of the ilium. Conclusion : The technique using K-wire and cannulated screw can provide accurate placement of free hand S2AI screw.