비외상성 피질하 뇌혈관질환 환자에서 병소의 편측성에 따른 인지기능, 정신행동증상 및 일상생활기능의 차이에 대한 연구

박영수,이영호,최영희,고대관,정영조,박병관,김수지,정숙회,고병희,송병일,박건우,이대희,Park, Young-Soo,Lee, Young-Ho,Choi, Young-Hee,Ko, Dae-Kwan,Chung, Young-Cho,Park, Byoung-Kwan,Kim, Soo-Ji,Chung, Suk-Haui,Ko, Byoung-Hee,Song, Il-Byoung 대한수면의학회 1996 수면·정신생리 Vol.3 No.1

Objectives : This study was designed to find clinical factors that could be differentiated by the lateralization of lesion and also find clinical factors to predict the lateralization of lesion. Methods : The subjects were 65 cooperative inpatients and outpatients with non-traumatic subcortical cerebrovascular disease without neurologic and psychiatric history from January 1995 to September 1995 ; 48 patients in Kyung Hee University, Oriental Medicine Hospital, 35 patients in Anam Hospital, Korea University were examined as subjects, but authors excluded 20 patients whose data were incomplete or who had uncertain lesions on brain CT or MRI. The 65 patients were divided into three groups-group with left hemispheric lesion, group with right hemispheric lesion, group with both hemispheric lesion-according to the finding of brain imaging study. Their cognitive functions were evaluated by the Benton Neuropsychological Assessment(BNA), their subjective neurobehavioral symptoms by Symptom Check List-90-R(SCL-90-R), their objective neurobehavioral symptoms by Neurobehavioral Rating Scale, and their daily living functions by Geriatric Evaluation by Relative's Rating Instrument(GERRl) and Instrumental Activities of Daily Living Scale(IADLs). Results : The results were as follows : 1) The results of cognitive function test indicated that the group with right hemispheric lesion showed low functions in Tactile Form Perception(left), the group with left hemispheric lesion showed low functions in Finger localization(right), the group with right hemispheric lesion showed low functions in Finger Localization(left). 2) Though, there were little significant differences in subjective neurobehavioral symptoms, the group with right hemispheric lesion showed higher scores in all symptoms except hostility. 3) Though, there were little significant differences in objective neurobehavioral symptoms, the group with both hemispheric lesion showed higher scores in cognition, guilty/disinhibition, the group with left hemispheric lesion showed higher scores in lability of mood, the group with right hemispheric lesion showed highest scores in psychotism, neurotism, agitation-hostility and decreased motivation/emotional withdrawal. 4) There were little significant differences among three groups in Daily Living Functions, but the group with right hemispheric lesion showed the lowest functions in Instrumental Activities of Daily Living. 5) As a result of discriminant analysis on each factor's contribution to the prediction of lesion, Finger Localization(left), Phoneme Discrimination and Tactile Form Perception(right) showed that they had the potentiality to predict lesion. Conclusion : The results suggest that there are little significant differences among the groups of three non-traumatic subcortical cerebrovascular disease in cognitive functions, but the group with right hemispheric lesion showed more serious and various changes in subjective and objective neurobehavioral symptoms, and showed low functions in Instrumental Activities of Daily Living. This results suggest the possibility that the decline of the daily living function in the group with right hemispheric lesion were due to various symptoms, not due to cognitive dysfunction. The confirmation of the possibility should be worked out through the follow-up study of some groups containing cortical lesion. Apart from these findings, Finger Localization, Tactile Form Perception(right) and Phoneme Discrimination suggest that they can be used as clinically valuable cognitive parameters that predict the lateralization of lesion in non-traumatic cerebrovascular disease.

탄소나노튜브를 이용한 고강도 나노복합재료

박영수(Young Su Park),허몽영(Mong Young Huh),안계혁(Kay-hyeok An),김은성,강신재(Shinjae Kang) 한국자동차공학회 2008 한국자동차공학회 지부 학술대회 논문집 Vol.2008 No.11

With major causes of exhaustion and global warming of limited fossil fuel, according to policy of saveenergy and nature-friendly products, it is needed for gas milage to beb increased by compulsion regulation (Corporate Average Fuel Economy, CAFE). For this regulation solution, the diverse and hard tries such as light-weight vehicle, electric car, and fuel cell have carried out to elevate engine efficiency and to reach to a next generation zero-emission vehicle. In light-weight field, it has been tried to find or make much stronger and lighter materials or composites, magnesium alloy and carbon fiber would be a powerful candidate in metals and reinforced plastic composites for light weight vehicles. But, we here introduced carbon nanotube (CNT), which is one of the highest Young’s modulus and strength, and its nanocomposite which would be a new and powerful material to make light weight vehicle. CNT reinforced nanocomposite would solve waste disposal to make up environmental problem and have the advantage in recycling problem that would be or has been occurred in other reinforced composites.

ARPA/레이더 시뮬레이션 교육 모듈의 표준화 연구

박영수,Park, Young-Soo 해양환경안전학회 2016 海洋環境安全學會誌 Vol.22 No.6

예비 항해사는 타선과의 충돌 가능성을 사전에 파악하여 회피할 수 있는 능력을 ARPA/레이더 시뮬레이션 교육을 통해 갖추어야 한다. 이러한 시뮬레이션 교육은 국내외 지침(해양수산부 고시, STCW 협약 등)에 교육 내용과 기간만이 명시되어 있는 것으로 조사되었다. 또한 시뮬레이션 교육 훈련 모듈의 부재로 각 해기 교육 기관에서는 자체적으로 모듈을 구성하여 관련 증서를 발행하고 있는 것으로 확인되었다. 이로 인하여 ARPA/레이더 시뮬레이션을 통한 동일한 해기 능력 함양이 어려운 것이 현실이다. 따라서 본 연구에서는 우리나라 해기 교육 기관별 동일한 능력 함양을 위하여 ARPA/레이더 시뮬레이션 교육 모듈을 표준화하고, 표준화된 모듈을 통한 교육 향상도에 대하여 검증하고자 한다. 이를 위해서 우리나라 해기 교육 기관의 시뮬레이션 교육 형태를 조사하고, 교통 조사를 기반으로 한 실해역의 교통 흐름을 반영한 시나리오 제시, 교육 훈련 및 평가를 효율적으로 하기 위한 해기사 핵심 역량 기반 모듈을 제시하였다. 그리고 2년간에 데이터를 이용하여 표준화된 모듈을 통한 교육 훈련의 향상 정도를 파악하였다. 이러한 표준화된 ARPA/레이더 시뮬레이션 모듈을 통해 각 교육 기관에서는 효율적이고 체계적인 해기 교육이 가능하고 해기능력 향상을 통한 선박 통항 안전에 기여할 수 있는 기반을 마련할 수 있다. A mariner cadet gains the ability to identify and avoid potential collisions with other ships through ARPA/Radar simulation education. This research surveyed first domestic and overseas's rules (e.g., MOMAF's Standard, the STCW Convention, etc.) of the simulation education, upon investigation the only content and timing of this simulation-based education are specified according to these rules, and maritime education institutions issue the related certification autonomously after a student has taken the simulation because no simulation education module exists to further guide the ARPA/Radar simulation. As a result, it is difficult for students to acquire consistent maritime ability through ARPA/Radar simulation. This paper discusses standardization of these education modules to produce more consistent mariner ability, and verify the degree of improvement of education that would be achieved by enacting the proposed education module. The simulation education system used in maritime institutions in Korea was investigated, and scenarios reflecting traffic flow in actual waterways was proposed based on marine traffic surveys so teaching modules can educate/assess more effectively based on core marine abilities. Improvements in education and training were also verified using data collected over 2 years based on a standardized module. Each education institution can enact an effective, systematic education approach using standardized ARPA/Radar education modules proposed in this paper, and this can set a foundation to contribute to safer vessel navigation by improving maritime abilities.

선박조종 시뮬레이터를 이용한 해상교통 위험도 평가에 관한 연구

박영수,김종성,김철승,정재용,이형기,정은석,Park, Young-Soo,Kim, Jong-Sung,Kim, Chol-Seong,Yong, Jeong-Jae,Lee, Hyong-Ki,Jeong, Eun-Seok 해양환경안전학회 2013 해양환경안전학회지 Vol.19 No.2

해상에서는 선박 운항과 관련하여 크고 작은 해양사고가 지속적으로 발생하고 있으며, 이러한 해양사고는 소중한 인명의 사상과 재산상의 손실뿐만 아니라 심각한 해양환경 오염 피해를 유발하고 있다. 그리고 해상물동량 증가 및 교통 환경의 복잡화에 따른 해양사고 발생 개연성 및 사고로 인하여 해양오염 피해가 증가하고 있는 것 또한 사실이다. 최근 우리나라에서는 이러한 해상에서의 해상교통 안전성 평가를 위하여 대상해역에서의 해상교통환경과 관련된 일반적인 정보 및 위험도 정보를 제공하고, 해상교통환경 평가를 통한 해역 위험도 여부를 평가할 수 있는 평가지표 개발이 진행 중이다. 본 연구에서는 선박운항자의 위험의식을 바탕으로 하여 다양한 운항 조건에서 선박운항을 재현할 수 있는 선박조종 시뮬레이션을 이용하여 해상교통 평가의 유효성을 확인하고자 하였다. 이러한 시뮬레이션 결과에 대한 주관적 위험도의 측정이 통항선박의 해상교통 평가의 유효성을 대표하는지를 확인하기 위하여 분산분석법을 이용하여 선박운항자의 특성과 선박간 거리, 속력, 조우형태와 같은 각 요소들 간에 차이가 존재하는지를 분석하였다. 또한 각 요소들 간의 위험도 차이 정도를 다중비교를 통하여 분석하여 위험도 차이를 통계적 측면에서 수치의 변화를 확인할 수 있었다. Large and small marine accidents which are related to vessel's navigation are happening continuously and these maritime accidents have caused loss of lives and properties, and serious maritime environmental pollution damage. It is also true that maritime pollution damage is increasing due to these accidents, probability of growth of seaborne volume and complicated maritime traffic environment. Korea, recently, is developing an evaluation index which can assess sea risk through the evaluation of maritime traffic environment and provide danger and general information with relation to maritime traffic environment on target sea area to evaluate maritime traffic safety. In this paper, we intend to confirm the validity of maritime traffic safety on the basis of vessel navigator's risk consciousness and various sailing conditions by using the ship handling simulator. To confirm the validity of sailing vessel's maritime traffic safety, we use analysis of variance. By using analysis of variance, we analyze vessel navigator's characteristics, distance, speed and encounter type between vessels. Through multiple comparison of each factor's risk difference, we can confirm the change of numerical value of risk difference in statistical aspect.

Acrobeads Test를 이용한 정자수정능의 평가

박영수,박남철,Park, Young-Soo,Park, Nam-Cheol 대한생식의학회 1996 Clinical and Experimental Reproductive Medicine Vol.23 No.1

The assessment of acrosomal status is important in evaluating the ability of sperm to fertilize the egg. The acrosomal status of sperm from 47 normal volunteers with proven fertility and 167 subfertile men with not to achieve pregnancy for at least 1 year were evaluated with Acrobeads test(FUSO Pharmaceutical Industries, Ltd, Japan) using immunobeads coated with MH61 monoclonal antibody, which is specific for acrosome-reacted sperm. The mean${\pm}$SD of acrobeads score in 47 volunteer group was $2.8{\pm}0.7$, of which 46(97.9%)cases were ${\geq}$ 2. The mean${\pm}$SD of acrobeads score in 167 subfertile group was $1.7{\pm}0.8$, of which 73(79.3%)cases were ${\leq}$ 1. The aerobe ads score in subfertile group were significantly lower(r=0.294, p<0.05) than those in volunteer group. In subfertile group, acrobeads score were well correlated with the sperm density and motility(r=0.275, r=0.281, p<0.01), but not with semen volume(r=0.16) and serum hormone level(FSH r=0.084, LH r=0.036, testosterone r=0.058, prolactin r=0.006 and estradiol r=0.060)(p>0.05). Of 63 subfertile cases with normozoospermia, 22(34.9%)cases showed 0 or 1 of acrobeads score, which means to accompany with a functional defect in spite of normal morphology. As a results, Acrobeads test is not only a technically simple sensitive procedure with good reproducibility in evaluating the sperm fertilizing capacity but also an useful in the evaluation of effectiveness in the treatment of infertility and the separation of acrosome-reacted sperm in the assisted reproductive technique.

HTML5에서 Quadratic & Cubic Bezier 곡선을 이용한 2D to 3D 입체 이미지 변환

박영수,Park, Young Soo 한국디지털정책학회 2014 디지털융복합연구 Vol.12 No.12

본 논문에서는 HTML5에서 Quadratic & Cubic B$\acute{e}$zier 곡선을 이용하여 2D 이미지를 3D 입체 이미지로 변환하는 방법을 제안한다. 3D 입체 이미지 변환은 원본 이미지에서 RGB색상 값을 분리 추출하여 좌안과 우안을 위한 2개의 이미지로 필터링한다. 사용자는 Quadratic B$\acute{e}$zier 곡선과 Cubic B$\acute{e}$zier곡선을 이용한 제어 점을 통해 이미지의 깊이 값을 설정하게 된다. 이 제어 점을 기반으로 2D 이미지의 깊이 값을 계산하여 3D이미지에 반영하게 된다. 이 모든 과정은 HTML5를 사용한 웹 환경에서 구현하였으며, 사용자들은 매우 쉽고 편리하게 자신들이 원하는 3D 이미지를 만들 수 있게 하였다. In this paper, we propose a method to convert 2D image to 3D anaglyph using quadratic & cubic B$\acute{e}$zier Curves in HTML5. In order to convert 2D image to 3D anaglyph image, we filter the original image to extract the RGB color values and create two images for the left and right eyes. Users are to set up the depth values of the image through the control point using the quadratic and cubic B$\acute{e}$zier curves. We have processed the depth values of 2D image based on this control point to create the 3D image conversion reflecting the value of the control point which the users select. All of this work has been designed and implemented in Web environment in HTML5. So we have made it for anyone who wants to create their 3D images and it is very easy and convenient to use.

A Study on the Marine Traffic Assessment based on Traffic Distribution in the Strait of Malacca

박영수,박진수,김태균,Thanh, Nguyen Xuan,Park, Young-Soo,Park, Jin-Soo,Kim, Tae-Goun 해양환경안전학회 2015 海洋環境安全學會誌 Vol.21 No.1

말라카해협의 해상교통 안전 확보는 우리나라를 비롯하여 중국, 일본을 포함한 극동아시아의 경제 발전에 직접적인 영향을 미치므로 세계적으로 중요한 해역이다. 이러한 의미에서 이 해역의 해상교통안전을 분석하는 것은 중요한 의미가 있다. 이 연구에서는 말라카해협을 대상으로 TOAIS 프로그램에 의한 선박 AIS 데이터를 1개월 동안 수집하였고, EasyFit 프로그램을 이용하여 해상교통의 통항분포를 통계적으로 분석하였다. 그 결과, 현재까지 해상교통공학 분야에서 선박통항의 분포는 정규분포라고 알려져 사용되고 있었지만, 말라카해협의 해상교통조사 결과 그 통항분포가 정규분포와 상이하다는 것을 확인하였다. 이러한 상이한 해상교통 분포 모델을 적용한 IWRAP모델을 이용하여 이 해역을 평가하였고, 그 결과 추월과 횡단상황이 가장 위험한 것으로 분석되었다. 또한 말라카해협의 충돌위험이 가장 높은 해역은 말라카해협과 포트클랑 해협 간 횡단지점으로 분석되었다. The Strait of Malacca is one of the most important fairways in the world and its traffic safety has direct effect on economic development of East Asian countries including China, Japan and Korea. Because of this reason, a safety analysis of the marine traffic in the strait has a great significance. In this paper, we analysed the statistic distribution of marine traffic in the Strait of Malacca based on the vessels' AIS data for 1 month by using the TOAIS and EasyFit programs. As the results of the analysis, it was found that the traffic distribution of this strait was different with normal distribution, which had been still widely used in marine traffic engineering field. Furthermore, with the traffic distribution analysis results, the traffic safety of the strait was also assessed by using the IWRAP model. The results showed that the highest level of risk were overtaking and crossing situations. Finally, we found that the highest risk of collision area in the Strait of Malacca was crossing area between the Strait of Malacca and the Port Klang fairway.

직전항로에서의 적정 최대속력에 대한 검토.연구

박영수,정재용,박진수,Park Young-Soo,Jong Jae-Yong,Park Jin-Soo 해양환경안전학회 2006 海洋環境安全學會誌 Vol.12 No.2

Recently, ships' average navigation speed become faster than before because of the increasing of high-speeds vessel including container ships and passenger-ferries. So, it is considered that the speed limit in the navigation channel in Korea isn't proper for vessel management in these days. Also, there is rare paper studies about the speed limit quantitatively and numerically, especially the speed limit is discussing continuously, as abrogation of Incheon Port's speed limit and alleviation of Gwang-yang Port's speed limit according to the requests by the navigating mariners. Consequently this paper deals with the effectiveness of speed limits using the Environmental Stress Model, after replay of the navigation traffic flow in the straight waterway using marine traffic flow simulation technique. 컨테이너 선박 및 고속선 등과 같은 고속선박의 등장으로 해상에서의 선박 속력은 이전보다 더욱 높아지고 있다. 그러나 우리나라의 특정해역으로 지정되어 있는 현행 교통 밀집해역에서의 속력규제는 수십년전의 규정으로 현재의 교통상황에 잘 부합되지 않는 제도라고 사료된다. 특히 그 해역을 항행하고 있는 선박운항자의 주장으로 인천항의 속력규제 폐지, 광양항의 속력규제 완화 등 속력규제에 관한 논의가 계속되고 있지만 이러한 협수로에서의 속력규제에 대하여 수치화되거나 정량화된 연구는 드물다. 본 연구에서는 직선항로에서의 통항선박의 흐름을 재현한 후, 선박운항자의 선박운항 부담감을 정량화한 환경스트레스 모델(ES Model)을 이용하여 속력규제에 대하여 분석하여 최대속력규제의 효과 여부를 알아보고자 한다.

부산항내 제트포일 여객선의 항해 속력에 대한 연구

박영수,전태영,박성용,김득봉,Park, Young-Soo,Jeon, Tae-Young,Park, Sung-Yong,Kim, Deug-Bong 해양환경안전학회 2013 海洋環境安全學會誌 Vol.19 No.4

부산항내는 시간당 10척 이상의 선박이 통항하고 있고, 일본 왕복 제트포일 여객선이 30 kts~40 kts의 고속으로 항행하고 있어 우리나라에서도 고밀도 교통해역으로 간주된다. 더불어 이 항로 내에서는 제트포일 선박의 약 18 %가 고속으로 추월을 하거나 항로 밖으로 이탈하여 운항하고 있어 타 선박과 빈번히 조우하거나 항로 밖 항행 등과 같은 현행 법령을 미준수하고 있는 것으로 10일간의 해상교통조사를 통하여 분석되었다. 이 논문에서는 부산항의 교통조사 결과를 기반으로 한 해상교통류 시뮬레이션을 통하여 부산항내의 제트포일 여객선의 운항자 허용 가능 속력이 약32노트 이하로 계산되었으며, 제트포일 선박이 항로 내 및 항로 밖으로 통항하는 경우의 조선부담감 발생비율 차이가 미미한 것으로 분석되었다. 또한 시간당 통항척수가 감소함으로써 조선부담감이 다수 감소하기 때문에 피크타임 시간대 운항을 피하여 통항안전을 확보하여야 할 것이다. There are more than 10 ships and jetfoil passenger ships with speeds of 30~40 kts navigating between Japan and Busan ports per hour. Busan port has the highest density of traffic among the Korean ports and waterways. Jetfoil ships are the most frequently encountered amongst other vessels and about 18 % of passing jetfoil vessels violated port regulations. Based on the analysis of traffic survey carried out for 10 days, jetfoil vessels often overtook other vessels in route and deviated with high speed. This paper verified a proper speed and how to navigate in or out route of jetfoil ships by marine traffic flow simulation. A acceptable navigation speed for jetfoil vessel's mariner was calculated at less than about 32kts in Busan Port. It is a little different that shiphandling difficulty of jetfoil was almost the same whether passing in and out route in Busan Port. This paper proposes that the passing time of jetfoil ships should avoid the peak time to improve the traffic safety in Busan Port.

J2ME상에서 kXML Parser를 이용한 MIDlet 응용 설계 및 구현

박영수,장덕철,Park, Young-Soo,Jang, Duk-Chul 한국정보처리학회 2004 정보처리학회논문지D Vol.11 No.1

Compared with the desktop, the MIDP on J2ME has many limitations on memory capacity, screen size, networking ability and processing speed. In addition, screens vary with device providers in size, and service platforms vary with mobile service providers. These factors require additional functions to server and cause overheads of the server. On this paper, we propose the wav to reduce overheads of the server and to overcome disadvantages of the J2ME clients, with the server that provides the service of data in XML document type and the client on MIDP that is developed including the kXML parser. J2ME 기반의 MIDP는 기존 데스크탑 클라이언트에 비해 메모리, 스크린, 그리고 네트워크나 처리속도측면에서 많은 제한점을 가지고 있다. 특히 휴대폰의 경우 각 기기별 스크린 크기가 다르고, 통신사별 서비스 방식이 다르므로, 서버측면에서 보면 이를 위한 세심한 처리과정이 있어야 한다. 이것은 서버의 부하를 유발하는 원인이 될 수밖에 없다. 따라서 본 논문에서는 서버 측에선 XML 문서 형태로 서비스를 하고, J2ME 기반의 클라이언트에선 kXML 파서를 이용한 MIDlet 프로그램을 수행하게 함으로서, 서버의 부하를 줄임과 동시에 J2ME 클라이언트의 단점을 극복하는 방안을 제시하고자 한다.