• 산업공학
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• 제14권3호
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• pp.302-309
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• 2001

Direction-of-motion stereotypes between ON/OFF controls were tested using a paper-and-pencil test and interview method. One hundred and forty eight subjects of both genders and from a wide range of ages were asked to indicate the control movement they would make to turn on the light. Stereotypes were obtained for nine types of ON/OFF controls in two different planes. The results show that stereotype for left-right power switches is right for on, and stereotype for up-down switches is up. And, a strong stereotype was found in the case of left-right switches than up-down switches. Some stereotypes are significantly different between genders and age groups. These findings identified in this study can be used to design the ON/OFF switches of the facilities and equipments.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2010년도 추계학술대회
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• pp.766-767
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• 2010

최근 주목받고 있는 광원인 LED를 이용하여 국소 환부 부위의 무영 촬영을 위해 의료용 링 라이트를 개발하였다. 개발된 링 라이트는 PWM 방식을 이용하여 다양한 광량의 조절이 가능하도록 설계하였으며 각각의 LED를 독립적으로 제어함으로 색온도 및 연색성의 조절이 가능하다. 또한 환부의 연속 촬영을 위한 지속광과 순간적인 촬영을 위한 플래시 모드의 동작이 가능 하다. 본 연구에서는 환부의 순간적인 무영촬영을 위해 구성된 인터페이스 회로를 이용하여 순간적인 플래시 기능의 응답속도를 확인하였다.

• 대한교통학회지
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• 제35권1호
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• pp.79-89
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• 2017

본 연구의 목적은 국내 신호교차로에서의 우회전 운영에 관한 문제점을 분석하고, 적절한 우회전 운영 방안을 정립 및 제시하는데 있다. 현장 조사 결과 국내 우회전 전용 신호등은 다양한 종류 및 형태로 운영되고 있으며 관련 규정이나 기준도 명확하지 않다. 또한 우회전 신호등에서 사용하는 적색신호의 의미가 도로교통법 상에 명시된 적색 원형 등화의 의미에 위배되는 문제점이 있다. 이는 운전자에게 혼란을 줄 수 있고 이에 따른 사고 발생의 위험도 존재한다. 국내는 기존에 적신호시 우회전을 허용함으로서 우회전 운영에 관한 연구가 활발하게 이루어지지 않았으나 최근 우회전 교통류에 대한 제어의 필요성이 증가함에 따라 이에 관한 제도 및 운영 방안 정립이 필요하다. 본 연구에서는 우회전 운영과 관련한 기존 연구를 고찰하고 해외 여러 국가의 우회전 운영 관련 지침을 검토하여 국내 우회전 운영방안을 정립하고 제시한다. 우회전 비보호 운영시에는 적색 신호의 의미를 우회전 차량에 대하여 일단 정지 후 진행할 수 있도록 명시하는 것이 필요하다. 우회전 보호 운영을 위한 우회전 신호등 설치 시 우회전 전용차로가 하나 이상 확보된 경우에만 설치할 수 있도록 규정해야 한다. 기존 신호등과 우회전 신호등의 차별성을 위하여 삼색 화살표 신호등을 우회전 전용 신호등으로 사용할 것을 제안한다. 또한 우회전 운영방안을 비보호, 보호, 보호 비보호의 세 가지 유형으로 구분하여 각 유형별 구체적인 운영 방안을 제시한다.

• 교양교육연구
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• 제8권4호
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• pp.339-367
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• 2014

이 논문은 프랑스 현대 철학자 자크 데리다와 폴 리쾨르 철학을 통해 교양교육의 문제점을 지적하고, 교양교육을 보다 풍요롭게 하기 위한 방안을 제시하고 있다. 두 철학자의 이론 가운데 특히 '철학의 권리'와 '대화주의'에 초점을 맞추고 있는데, 이 개념들을 매개로 교양교육 차원에서 어떻게 데리다와 리쾨르 철학을 활용할 것인가를 밝히고자 한다. 먼저 데리다의 철학의 권리는 신자유주의가 강조하는 효율성과 수익성의 논리를 뛰어넘는 교양교육적 차원에서 중요한 개념이면서 동시에 소위 4Cs(Creativity, Critical Thinking, problem-Solving, Collaboration, Communication)로 불리는 핵심역량의 토대 개념이 될 수 있을 것이다. 하지만 인권(선언)과 비교하여 그 중요성이 상대적으로 저평가되고 있는 실정이다. 그리고 리쾨르의 대화주의는 오늘날 교양교육에서 화두가 되고 있는 융복합 교육과 밀접한 관계를 가질 뿐만 아니라, 교양교육의 새로운 방법론으로 충분히 활용될 수 있을 것이다.

• Journal of Periodontal and Implant Science
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• 제26권1호
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• pp.47-67
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• 1996

The purpose of this study was to observe the effect of $Biocoral^R$ graft and bioglass 45S5 graft in combination with ePTFE membrane in periodontal osseous defects for new bone formation. Nine healthy dogs were used. Under general anesthesia, 3-wall defects were created on the mesial and distal surfaces of the maxillary right canines, the mesials of the maxillary right second premolars, the distals of the mandibular right canines and the mesials of the mandibular right third premolars. To induce periodontitis, a silicone rubber, $Provil^R$ light body, was injected under pressure into the defects. Ninety days later, $Provil^R$was removed and followed by thorough root planing. The followings were then applied in the mesial and distal defects of the maxillary right canines, the mesials of the maxillary right second premolars, the distals of the mandibular right canines and the mesials of the mandibular right third premolars by random selections : 1) ePTFE membrane only application, 2) $Biocoral^R$ graft, 3) $Biocoral^R$ graft and ePTFE membrane application, 4)Bioglass 45S5 graft, 5) Bioglass 45S5 graft and ePTFE membrane application. The membranes were removed 1 month later. The dogs were sacrified at 1, 2 and 3 months following the graft, and block sections were made, demineralized, embedded, stained and examined by light microscope and transmission electron microscope. On the sections from teeth treated with ePTFE membrane only, the defect demonstrated extensive connnective tissue and alveolar bone regeneration. The $Biocoral^R$ graft group demonstrated extensive bone regeneration compared with ePTFE membrane only group. In the $Biocoral^R$ graft plus ePTFE membrane group, regeneration of new alveolus and crest occurred within the defect. As the experimental period lengthened, bone regeneration was increased and bone bridge was formed among the graft particles. The but bioglass 45S5 graft group demonstrated extensive bone regeneration but the amount of new bone was less than that of the $Biocoral^R$ graft group. For the bioglass 45S5 graft plus ePTFE membrane group, the amount of new bone was also increased. As the experimental period lengthened, bone regeneration was increased. Multinucleated giant cells, fibroblasts and macrophages were observed. As the bone formation was increased, the number of such cells was decreased. In conclusion, the $Biocoral^R$ was found better than the bioglass 45S5 for new bone formation, and the use of ePTFE membrane alone or with $Biocoral^R$/bioglass 45S5 can be supported as potential methods of promoting bone formation.

• 한국안전학회지
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• 제29권6호
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• pp.81-86
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• 2014

Composite materials have high specific stiffness, specific strength than existing concrete or steel materials. It has superior dynamic properties when utilizing advantages of material such as Non-corrosive, light weight, non-conducting and it has superior mold ability which can make variable shapes. Thus, in the construction, for using composite materials as construction materials, the study carried out static strength of fiber right angle direction and fatigue performance of FRP deck member. The study is going to deduct S-N curve by analyzing the results comparatively and estimate long-term durability. From now on, the study is going to provide interpretation of FRP member and basic data of design basis, furthermore providing foundation technique of composite materials' application of structural frame is the goal of this study.

• 산업경영시스템학회지
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• 제14권24호
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• pp.123-132
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• 1991

This study deals with the experiment of perceiving visual information according to the positions of vehicle side mirrors. In the design of vehicle, the consideration of safety is very important. Therefore we consider the positions of side mirrors to use visual information effectively which is important factor to driver. This paper presents the position of side mirror to elevate the degree of visual perception for the circumstances of danger by experiments. To exhibit the circumstances of danger. 4 LED(Light Emitted Diode) art located at each side(right. left front. hack) of vehicle. A subject pushes the LED switch to see that if he perceives the circumstance of danger. To record the circumstance of randomly generated danger, computer interface card is used to control 4 LED and swithch on IBM PC/AT Experiments are divided into 2 parts. The 1st experiment present the independence of right & left side mirror. The 2nd experiment present optimal position of right & left side mirror. The vehicle used in experiment is model EL of H Co.. Statistical process of experimental data using SPSS(Statistical Package for Social Sciences)/PC package concludes that 1) the optimal position of right side mirror is 54cm forward of exist position. 2) for the left side mirror, the position of 120cm forward of exist position shows the worst degree of perception. and the optimal position does not exist in statistical meaning.

• The Journal of Advanced Prosthodontics
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• 제13권1호
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• pp.24-35
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• 2021

PURPOSE. This study was to evaluate the effect of rinsing time on the accuracy of interim crowns fabricated by digital light processing. MATERIALS AND METHODS. The maxillary right first molar master die was duplicated using a silicone material, while a study die was produced using epoxy resin. Scans of the epoxy resin die were used in combination with CAD software to design a maxillary right first molar interim crown. Based on this design, 24 interim crowns were fabricated with digital light processing. This study examined the trueness and precision of products that were processed with one of the three different postprocessing rinsing times (1 min, 5 min, and 10 min). Trueness was measured by superimposing reference data with scanned data from external, intaglio, and marginal surfaces. Precision was measured by superimposing the scan data within the group. The trueness and precision data were analyzed using Kruskal-Wallis, nonparametric, and post-hoc tests, and were compared using a Mann-Whitney U test with Bonferroni correction (α=.05). RESULTS. The trueness of the external and intaglio surfaces of crowns varied significantly among the different rinsing times (P=.004, P=.003), but there was no statistically significant difference in terms of trueness measurements of the marginal surfaces (P=.605). In terms of precision, statistically significant differences were found among the external, intaglio, and marginal surfaces (P=.001). CONCLUSION. Interim crowns rinsed for 10 minutes showed high accuracy.

• Journal of Acupuncture Research
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• 제38권4호
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• pp.325-330
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• 2021

In this Case Report, a patient with Buerger's disease who had a leg amputation below his lower right knee and a vascular bypass of right leg, developed a wound caused by his prosthetic leg and subjective discomfort. The patient received skin flap surgery but the wound did not heal properly. He was admitted to the Korean Medicine Hospital where his wound, right leg coldness, and phantom pain were treated with combined Korean medicine. The patient was hospitalized again where he underwent micro-drilling surgery. The patient was re-admitted to the Korean Medicine Hospital where he received combined Korean medicine treatment (CKMT) and carbon arc light treatment (CALT) for his wound, leg coldness, stiffness, and hypoplasia. The temperature of his right leg increased, the numeric rating scale score for assessing pain fell from 5 to 1.5, and subjective discomfort was reduced (< 20%) suggesting this may be an effective treatment.

• 한국도로학회논문집
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• 제18권5호
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• pp.63-73
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• 2016

PURPOSES : The objective of this study was to analyze variations in the vehicle driving behavior characteristics on signalized intersections according to the use of traffic enforcement camera (red light camera). METHODS : In order to analyze the driving behavior characteristics on signalized intersections when red light camera are installed, the target sites for investigation were selected depending on whether the red light camera is installed and accident rates increased after the installation. In particular, to analyze the characteristics of dilemma zones in signalized intersections, approach speed and deceleration speed of 3 type vehicles (passing vehicles during a yellow light, stopping at a yellow light, passing vehicles during a green light) were examined. Based on these data, the starting point, ending point, and distance of the dilemma zones were calculated. Also, the locations of increased traffic accidents and decreased accidents after the installation of the equipment were distinguished when analyzing the traffic accident characteristics. RESULTS : Analysis results revealed that there was a tendency for the dilemma zone distance to decrease after the installation of equipment(red light camera) in most sites. This tendency was found to be due to the decrease in the approaching speed of vehicles at intersections after the installation of equipment, resulting in the starting and ending points of dilemma zone to become closer to the stop line. Moreover, analysis showed that the number of traffic accidents decreased for most intersections after the installation of equipment and safety of the intersections increased somewhat. CONCLUSIONS : In general, installation of equipment(red light camera) caused the intersections approaching speed and dilemma zone distance to decrease. Decision-making is difficult for drivers in the dilemma zone, so the decrease in the dilemma zone distance implies an improvement in traffic safety. Furthermore, the number of accidents within intersections significantly decreased after the equipment was installed, leading to the conclusion that installation of the equipment affected the decrease in traffic accidents.