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신윤식,박요한,신재곤,정재일,Shin, Yunsik,Park, Yohan,Shin, Jae-Kon,Jeong, Jayil 한국자동차안전학회 2021 자동차안전학회지 Vol.13 No.4
In this study, The behavior of an autonomous vehicle in an intersection accident situation is predicted. Based on a representative intersection accident situation from actual intersection accident database, simulation was performed by applying the automatic emergency braking algorithm used in the autonomous driving system. Accident reconstruction was performed based on the accident report of the representative accident situation. After applying the autonomous driving system to the accident-related vehicle, the tendency of intersection accidents that may occur in autonomous vehicles was identified and analyzed.
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실사고 기반 자동긴급제동장치 차량의 교차로 사고 경향 분석
신윤식,김문영,정재일 사단법인 한국자동차안전학회 2023 자동차안전학회지 Vol.15 No.1
The purpose of this study is to predict how the actual accident changes by reconstructing the accident with an Autonomous Emergency Braking system (AEB) based on the actual accident of the LTAP-OD (Left Turn Crossing Path - Opponent Direction) intersection. A virtual AEB sensor was developed, and 150 head-on collision accident reports were secured to the insurance company to reconstruct the accident. As a result of the accident type analysis, a total of 13 types of head-on collision accidents were derived, and it is the LTAP-OD intersection accident with the highest frequency. In the LTAP-OD intersection accident, the simulation was conducted by applying the virtual AEB of each vehicle, the accident rate decreased by 90% or more when the AEB of the left-turn vehicle was applied, and the accident rate decreased by 50%. In addition, the most frequent collision types in LTAP-OD accidents were the front bumper on the driver’s side of a vehicle going straight and the front bumper on the passenger’s side of a vehicle turning left.
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신윤식,고경봉,Shin, Yoon-Sik,Koh, Kyung-Bong 한국정신신체의학회 2002 정신신체의학 Vol.10 No.1
Objectives : The object of this study was to investigate the relationship between coping strategies and perceived stress or pain discomfort in patients with chronic low back pain. 80 patients with chronic low back pain and 100 normal controls participated in this study. Methods: Global assessment of recent stress (GARS) scale and Stress Response Inventory (SRI) were used to measure perception for stressors and stress responses. Coping scale and pain discomfort scale were used to measure coping strategies and pain perception. Results : Scores of perceived stress related to work or job, interpersonal relationship, changes in relationship, sickness or illness and the total scores on the GARS scale were significantly higher in those with chronic low back pain than normal controls. Scores of the SRI fatigue subscale scored significantly higher in those with chronic low back pain than normal controls. No significant difference was found on total scores of the pain discomfort scale between those with chronic low back pain and normal controls. The patients with chronic low back pain scored significantly higher on planful problem solving and positive reappraisal than normal controls. In the patient group, pain perception had significant positive correlations with total scores of the SRI and scores of stress perception related to illness or injury. The extent of escape-avoidance showed significant negative correlations with age, whereas the extent of distancing or escape-avoidance had significant negative correlations with the level of education. Significant difference was also found in accepting responsibilities between male subjects and females. However, no significant correlations were found between coping strategies and perceived stressors, stress responses or pain perception. Conclusion : The results suggest that patients with chronic low back pain were more likely to use more active coping strategies than normal controls, though the former had more perception for stressors than the latter. It was also found that coping strategies used by the patients were associated with sociodemographic factors, but that they were not associated with perceived stressors, stress responses or pain perception.
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신윤식,김민호 한국국제경영관리학회 2012 국제경영리뷰 Vol.16 No.3
본고에서는 수출협상의 규모, 이행기간, 수출비중, 기업의 규모 등의 특성 변수와 기업가치의 관계를 사건연구(event study)기법을 통하여 연구하였다. 연구결과는 다음과 같다. 첫째, 수출계약의 체결은 기업가치에 긍정적인 영향을 미친다. 둘째, 수출계약의 규모와 기업가치와의 관계는 특별한 유의성을 보이지 않았다. 셋째, 계약의 이행기간과 기업가치와의 관계는, 단기에 있어서는 유의성이 없지만 장기적으로는 이행기간이 긴 수출계약이 기업가치에 큰 영향을 미친다. 넷째, 수출비중과 기업가치와의 관계는, 단기에 있어서는 유의성이 없지만 장기적으로는 수출비중이 큰 기업일수록 계약체결이 기업가치에 보다 큰 영향을 미쳤다. 다섯째, 기업의 규모가 클수록 수출협상 타결은 단기 및 장기에서 기업가치에 긍정적인 영향을 미쳤다. In this study, we analyze how the news of export contracts affect the firm value. Also, we want to know whether export weight-ratio, scale of negotiation, company's scale and performance period of contract play some role between export contracts and firm value. We utilize the “event study” technique to measure the firm value, and find the export contracts positively affect the value of the firm. However we fail to find any meaningful relationship between size of the contract and firm value. The export weight-ration and performance period of contract do affect the firm value in the long run.
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