• Journal of Chest Surgery
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• 제29권2호
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• pp.208-212
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• 1996

1990년 1월부터 1994년 12월까지 4년간의 들상에 의한 외상성 기도손상으로 10명의 환자가 응급실로 내원하였다. 7명은 자동차 사고였고 3명은 산업재 해였다. 내원시 주증상은 피하기종, 호흡부전, 각혈 등이였다. 방사선학적 소견은 주로 기흥, 종격동기흥, 혈흥 등이 었다. 기관지내시경은 내원 초기에 매우 유효한 검사이다. 파열부위는 우폐 전적출술을 한 1명을 제외하고 단순봉합하였다. 술후 1명이 폐좌상으로 인한 급성호흡부전으로 사망하였으며 9명은 별다른 합병증없이 일상생활로 복귀하였다. 외상성 기도손상환자의 치료에 있어서 중요한 것은 조기진단과적절한 치료이다.

• Nuclear Engineering and Technology
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• 제48권4호
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• pp.982-996
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• 2016

In this paper, new tethered aerial robots including roaming tethered aerial robots (RTARs) for radioactive material sampling and stationary tethered aerial robots (STARs) for environment monitoring are proposed to meet extremely-long-endurance missions of nuclear power plants. The flight of the proposed tethered aerial robots may last for a few days or even a few months as long as the tethered cable provides continuous power. A high voltage AC or DC power system was newly adopted to reduce the mass of the tethered cable. The RTAR uses a tethered cable spooled from the aerial robot and an aerial tension control system. The aerial tension control system provides the appropriate tension to the tethered cable, which is accordingly laid down on the ground as the RTAR roams. The STAR includes a tethered cable spooled from the ground and a ground tension control system, which enables the STAR to reach high altitudes. Prototypes of the RTAR and STAR were designed and successfully demonstrated in outdoor environments, where the load power, power type, operating frequency, and flight attitude of the RTAR and STAR were: 180 W, AC 100 kHz, and 20 m; and 300 W, AC or DC 100 kHz, and 80 m, respectively.

• 국제물리치료학회지
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• 제8권1호
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• pp.1122-1127
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• 2017

The purpose of this case study was to identify the effects of posteroanterior (PA) mobilization on the cervical spine in a patient with chronic whiplash-associated disorder (WAD). The subject of this study was a 58-year-old woman who sustained a chronic WAD as a result of a motor vehicle accident two years prior. The subject has progressively worsening neck pain and stiffness. The subject was determined to have a grade IIb WAD the use of the Modified Quebec Classification. The intervention was central and unilateral PA mobilization on the spinous process of C4 and C5. The PA mobilizations were performed at the end of range to Maitland grade IV. The PA mobilization was conducted once daily for a total of eight days. Two sets of measurements were done one before and one after the intervention. Neck pain, cervical stiffness, range of motion and lordosis of the cervical spine were measured. Experimental intervention decreased the neck pain, and increased the neck stiffness and cervical ROM (range of motion) such as flexion, extension, lateral flexion and rotation. X-ray photographs also represented that cervical curvature increased from $35^{\circ}$ to $40^{\circ}$. This study suggested that PA cervical mobilization applied to hronic WAD is effective in decreasing pain, increasing cervical ROM and cervical curvature.

• 한국ITS학회 논문지
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• 제8권3호
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• pp.42-51
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• 2009

우리나라는 고속도로 차로 수에 따라 차종별로 통행차로를 지정하는 제도를 운영하고 있으며, 그 동안 제도의 유효성 논란 속에 폐지와 운영을 반복하며 시행되고 있다. 본 논문에서는 제도의 유효성을 검증하기 위해 고속도로 10개 구간을 대상으로 차로통행방법 위반율과 교통사고와의 연관성을 분석하였다. 그 결과 양(+)의 상관관계가 있는 것으로 나타나 위반차량에 대한 적극적인 단속이 요구되며, 본 논문에서는 차량번호판의 영상인식에 기반한 자동단속시스템 구축 방안을 제시하였다.

• 전기학회논문지
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• 제60권1호
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• pp.85-92
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• 2011

Main characteristic in railroad is the guided movement of the wheel by the track through a metal-to-metal contact, conferring to the rail vehicle a single degree of freedom. There are defects such as head check, shelling, corrugation, squats etc in surface of the rail by interface between the wheel and rail. These defects bring about reducing the life-cycle of rails and track components and increasing noises. In case of bad conditions, it is possible to happen to full-scale accident such as derailment. Recently, the track capacity has been increased for increasing speed and operation efficiency. So, maintenance and indirect cost have been increased. Currently, a coating method of rail construction is proposed by using the ceramics in Korea. Rails are used as the earth in electrical railroad systems. Currently traction return current is flowed through wheels of trains. In case of rails coated, problems are caused in the contact power between wheel and coating material of spray. In this paper, electric model is presented in the AT feeding method. In case of rails coated, electric model is presented. Also, standard resistance of the ceramic is demonstrated by contact power between wheel and coating material of spray.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2017년도 춘계학술대회
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• pp.252-254
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• 2017

자동차 타이어는 차량을 운행하는데 있어 중요한 요소 중 하나이다. 타이어가 마모됨에 따라 자동차 제동거리가 늘어나고 슬립현상이 발생할 가능성이 크다. 따라서 주기적으로 타이어의 마모도를 확인하고 교체해주어야 한다. 기존에는 사람이 직접 마모도를 확인하여 타이어 교체여부를 판단하였다. 하지만 사람에 따라 기준이 다르기 때문에 교체 주기가 불분명해진다. 본 논문에서는 모터 회전각도를 활용한 타이어 마모도 확인 기법을 통해 명확한 교체주기를 마련한다. 명확한 교체주기가 정립됨으로써 타이어로 인한 차량 사고율이 줄어들 것으로 기대되기 때문에 모터 회전 각도를 활용한 타이어 마모도 확인 기법을 제안한다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2006년도 추계학술대회 논문집
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• pp.941-946
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• 2006

It followed in system development and SMRT(Seoul Metropolitan Rapid Transit Co)System reached to an automatic train operation(ATO) and driverless operation(DLM) from the manual operation due to the train driver. The train like the general bus or the car vehicle was not serial riding in a car and the Parallel concept which the numerous passenger rides in a car simultaneously occur frequently the charge of the train driver unmanned bitterly from existing manual handling was a possibility of doing, train open door control(ODM) which bites also ATO, it handles it minimized. Like this ATO/DLM, the control system which bites being a Wayside to Train communication for immediacy, it is a system of the Vital concept the immediacy of the citizen Data evil the radio information transmission and the train of the interface which is accurate from unmanned operation and, will decipher, will accomplish it will guarantee. It respects the passenger accident prevention and an air question environment improvement from subway platform and phul leys the screen door of Platform(PSD) with the fire tube frost it refers and part it treats and to sleep it does, ODM which bites is accuracy and immediacy of altitude and when seeing from the viewpoint which demands the trust of altitude, ODM system the trust of car incest interface in the equipment construction which is safe and the comparative analysis back of the system analysis against the control which bites and case study and other subway system it leads from the research which it sees and signal - train in base grudge to sleep it contributes it does.

• International Journal of Safety
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• 제9권2호
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• pp.29-34
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• 2010

When doing maintenance works at the trackside of railway, the method which delivers information on approaching of train to maintenance workers through alarm devices such as the flag or indication light, etc., is being used by locating persons in charge of safety alarm in addition to the maintenance workers at fixed distances in the front and rear of the workplace. Workers maintaining at the trackside may collide with the train since they cannot recognize the approach of train although it approaches to the vicinity of maintenance workplace because of the sensory block phenomenon occurred due to their long hours of continued monotonous maintenance work. The clash or rear-end collision accidents between many maintenance trains called motor-cars can be occurred since there are cases where the signal systems for safe operation of motor-car such as track circuit etc. are blocked or not operated normally. We developed the new safety equipment for protection of trackside maintenance workers using radio frequency signals and bidirectional detection mechanism. The developed safety equipment must analyze the several operational mechanism for each different operation situations. In this paper the analysis results are represented.

• 한국안전학회지
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• 제22권1호
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• pp.61-66
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• 2007

Car crashes are the leading cause of death for persons of every age. Specially, human-related factor has been known to be the primary causal factor of such crashes than vehicle-and environmental-related factors. There are various studies to analyze driver's behavior and characteristics in driving for reducing the car crashes in many areas of car engineering, psychology, human factor, etc. However, there are almost no studies which analyze mainly the human errors in driving and estimate their probabilities in terms of human reliability analysis. This study estimates the probability of human error in driving, i.e. driver error probability. First, fifty driver errors are investigated through DBQ (Driver Behavior Questionnaire) revision and the error likelihoods in driving are collected which are judged by skillful drivers using revised DBQ. Next, these likelihoods are converted into driver error probabilities using the results that verbal probabilistic expressions are changed into quantitative probabilities. Using these probabilities we can improve the warning effects on drivers by indicating their driving error likelihoods quantitatively. We can also expect the reduction effects of car accident through controlling especially dangerous error groups which have higher probabilities. Like these, the results of this study can be used as the primary materials of safety education on drivers.

• Clinics in Shoulder and Elbow
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• 제12권1호
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• pp.80-83
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• 2009

목적: 삼중 관절와 순 병변(triple labral lesion)은 전방, 후방, 상방 관절와 순의 파열이 동시에 발생한 경우를 말한다. 문헌 보고가 드물어서, 수상 기전과 증상에 대하여 아직 정립되지는 않았다. 대상 및 방법: 본 저자들은, 교통 사고 후 우측 견관절의 동통과 능동적 외전 장애를 보인 39세 남자에서 삼중 관절와 순 병변을 경험하였다. 내원 시에 관절와 상완 관절의 불안정에 대한 증상을 호소하지는 않았다. 흡수성 봉합 나사못과 봉합 갈고리를 사용하여 관절와 순에 대한 봉합술을 시행하였다. 결과: 수술 후 18개월 추시에서, 능동적 운동범위는 정상으로 호전되었으며 일상 생활 중에는 어려움이 없었다.