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첨단 주행시험장 동향 분석 및 능동안전 자동차 평가용 Test Bed 제안
조상수(Sang Soo Cho),최광호(Kwang Ho Choi),임재환(JaeHwan Lim),강병도(Byung Do Kang) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
The vehicles driving stability is the most important test item on the vehicle development and is needed to test a car in the standardized proving ground in order to estimate the car quantitatively. Moreover, in the world, vehicles that were equipped with ADAS(Advanced Driver Assist System) have been increasing due to consumers needs and the development of automobiles advanced technology. The foreign proving grounds have been operating their test pad with the trend of a vehicles development, also the advanced proving ground for testing ADAS and environment-friendly vehicle is being constructed at KATRI P.G. in Korea In this paper, the typical P.G. in the world examined, KATRI P.G. that is being conducted in Korea intruduced and then the further P.G. model was being proposed.
김철수(Chul-Su KIM),권혁선(Hyuk-Sun KWON),조상수(Sang-Soo CHO),김정규(Jung-Kyu KIM) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.3
In this study, in order to perform more efficiently safety design and integrity assessment of structural members, the relational database system on the fatigue strength of steels was constructed. Fatigue strength database contained 343 S-N curves for 39 kinds of the steels and was developed using MS-SQL 2000. Furthermore, the application program for reliability analysis was developed to consider variation of applied stress and fatigue strength. This program consists of 5 modules: search condition, evaluation of P-S-N curve, probabilistic characteristics of fatigue strength and applied stress history, and reliability analysis with strength-stress interference model.
양전자방출단층촬영을 이용한 국어단어와 영어단어의 어의처리 신경매개체의 특성 비교
김재진(Jae Jin Kim),김명선(Myung Sun Kim),조상수(Sang Soo Cho),권준수(Jun Soo Kwon),이재성(Jae Sung Lee),이동수(Dong Soo Lee),정준기(June Key Chung),이명철(Myung Chul Lee) 대한핵의학회 2001 핵의학 분자영상 Vol.35 No.3
N/A Purpose: This study was performed to search the relatively specific brain regions related to the semantic processing of Korean and English words on the one hand and the regions common to both on the other. Materials and Methods: Regional cerebral blood flow associated with different semantic tasks was examined using [150]H2O positron emission tomography in 13 healthy volunteers. The tasks consisted of semantic tasks for Korean words, semantic tasks for English words and control tasks using simple pictures. The regions specific and common to each language were identified by the relevant subtraction analysis using statistical parametric mapping. Results: Common to the semantic processing of both words, the activation site was observed in the fusiform gyrus, particularly the left side. In addition, activation of the left inferior temporal gyrus was found only in the semantic processing of English words. The regions specific to Korean words were observed in multiple areas, including the right primary auditory cortex; whereas the regions specific to English words were limited to the right posterior visual area. Conclusion- Internal phonological process is engaged in performing the visual semantic task for Korean words of the high proficiency, whereas visual scanning plays an important role in performing the task for English words of the low proficiency. (Korean J Nucl Med 200135:142-151)
양전자방출단층촬영을 이용한 초점주의와 작동기억의 뇌 활성화 양상 비교
김재진,조상수,김명선,손정우,이재성,이동수,이명철,권준수 大韓神經精神醫學會 2001 신경정신의학 Vol.40 No.2
연구목적: 단순 초점주의 과제와 보다 고도의 집중을 요하는 작동기억 과제를 수행하는 동안의 뇌 활성화 양상을 비교하여, 두 인지기능 과정을 매개하는 정상적 신경회로의 특성과 차이를 알아보는 것을 목적으로 하였다. 방법: 정상인 14명을 대상으로 시각처리 대조 과제, 단순 초점주의 과제, 작동기억 과제 등 세 가지 인지과제를 주고, 과제 수행 동안 [□O]H₂O를 추적자로 한 양전자방출단층활영을 실시한 후 감산분석을 통해 초점주의와 작동기억의 신경회로 지도를 작성하여 비교분석하였다. 결과: 초점주의 동안 활성화되는 부위는 좌측으로 편측화되고 산발적으로 분포하는 양상이었고, 특히 전대상이랑과 운동영역을 포함한 전두엽, 일차 및 이차 시각피질 등의 활성화가 특징적이었다. 작동기억 동안의 뇌 활성화 역시 산발적 분포와 좌측 편측화 양상이 관찰되었으나, 시각피질보다는 전두엽의 활성화가 우세하였고, 특히 우측 전대상이랑의 현저한 활성화가 특징적이었다. 결론: 초점주의와 작동기억은 개념적으로 공통점과 차이점을 내포하고 있는 것처럼 매개 신경회로에서도 공통 혹은 특이한 영역을 각각 가지며, 전대상이랑의 역할이 두 기능에 공통적으로 중요하고, 이차 시각피질과 전전두피질이 두 기능 각각에 더 중요하게 작용하는 것 같다. Objectives:This study was undertaken to identify neural substrates for simple focused attention and more highly-focused working memory i normal people and investigate their characteristics and differences. Method: Fourteen normal subjects were studied with [□O]H₂O positron emission tomography during a visual processing baseline task, simple focused attention task and working memory task. Results were analyzed with the subtraction analysis to map the neural correlates of focused attention and working memory. Results: Activated areas during focused attention tended to be lateralized to the left and scattered over various regions including the anterior cingulate, motor area, and primary and secondary visual cortices. While the areas activated during working memory also show the left lateralization and scattered distribution, activation prevailed more in the frontal lobe than in the visual cortex, and was particularly remarkable in the right anterior cingulate. Conclusions: Focused attention and working memory do not have only conceptually commonalities and differences but also have common and specific areas in their neural substrates. The anterior cingulate may commonly play an important role in both cognitive functions, whereas secondary visual cortex and prefrontal cortex seem to be predominantly implicated in each function, respectively.