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박병호,최용석,성현경,Park, Byeong-Ho,Choi, Yong-Seok,Seong, Hyeon-Kyeong 한국정보통신학회 2015 한국정보통신학회논문지 Vol.19 No.2
최근 국내에서도 교통정보시스템의 보급 및 개발이 확산되고 일부 서비스가 시범사업을 거쳐 상용화되면서 활용도가 높은 DSRC에 대한 관심이 높아졌으며 노변기지국과 차량 설치장비용 안테나가 연구되고 있다. 차량용 안테나의 경우 크기의 소형화가 요구되어 단일패치를 이용하였으나 대부분의 경우 소형화로 인하여 성능의 저하가 있었다. 또한, 기존에 연구되고 있는 안테나는 배열을 이용하여 성능을 높이는 방법이 일부 사용되고 있으나 배열을 사용하는 경우 안테나의 크기가 커지는 단점이 있다. 그러므로 본 논문에서는 DSRC의 OBU에서 사용할 수 있는 소형이며 제작이 용이한 단순한 구조의 CPW 급전을 이용한 마이크로스트립 패치 안테나를 설계 하였다. As the development and distribution of the intelligent transport system is spreading recently and some of the services are commercialized through a pilot project, interest in DSRC with high utilization is increasing and antennas for roadside and on board equipment are being studied. A single patch was used for a vehicle antenna due to the requests of miniaturization of size, but there was performance degradation in most cases due to miniaturization. In addition, some methods to improve performance have been used in the antennas that were previously researched using the arrays, but they have the disadvantages of bulkiness in size of the antennas when using the arrays. Therefore, in this paper, the CPW fed microstrip patch antenna with the simple structure of being compact and easy to produce, which can be used in the OBU of DSRC, was designed.
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전이성 임신성 융모막암종에 의한 객혈과 혈복강: 기관지동맥 및 초선택적 비장동맥 색전술 1예 보고$^1$
박병호,윤성국,김찬성,오종영,김용주,Park, Byeong-Ho,Yun, Seong-Guk,Kim, Chan-Seong,O, Jong-Yeong,Kim, Yong-Ju 대한영상의학회 2003 대한영상의학회지 Vol.48 No.1
임신성 융모막암종은 혈행성 전이가 빈번한 과혈관성 종양으로, 자궁뿐만 아니라 전이성 병변에서 출혈을 잘 일으킨다. 임신성 융모막암종은 뇌동맥이나 신동맥 등에 가성동맥류를 형성하거나 내부출혈을 일으키며 여러 문헌에서 색전술을 통한 지혈 효과를 보고하였다. 비장의 전이성 병변에 의한 복강내 출혈 및 색전술은 보고된 바가 있으나, 폐 전이에 의한 객혈의 치료를 위한 기관지동맥 색전술은 보고가 없다. 이에 저자들은 전이성 임신성 융모막암종 환자에서 발생한 객혈 및 복강내 출혈에 대하여 기관지동맥 색전술 및 미세 코일을 이용한 초선택적 비장동맥 색전술을 시행한 1예를 보고하고자 한다. Gestational choriocarcinoma is easily disseminated hematogenously and its hypervascular nature places the patient at risk of significant hemorrhage both at the sites of metastatic lesions and in the uterus. In addition, its tends to give rise to pseudoaneurysm formation. Treatment of the condition by percutaneous embolization has been reported in several published articles, and hemoperitoneum secondary to rupture of splenic metastasis of gestational choriocarcinoma has also been reported, as has angiographic embolization. Hemoptysis resulting from pulmonary metastasis and treatment by means of embolization of the bronchial artery have not been reported, however. In this article, we describe a case of hemoptysis and hemoperitoneum due to pulmonary and splenic metastasis of gestational choriocarcinoma. Treatment of the condition involved embolization of the bronchial artery and superselective embolization of the splenic artery.
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박병호,Park, Byung-Ho 한국정보교육학회 2004 정보교육학회논문지 Vol.8 No.2
With changing to the new information technology society, education has also been urged to utilize the Information Ccmmunication Technology(ICT). Thanks to the recent efforts by the government, a large number of schools has been equipped with advanced educational technologies. While there has been a lot of studies on how to use ICT more effectively, relatively few is the studies about the activating factors of ICT utilization. More than often than not, those studies have been conducted about the survey of current situations of ICT utilization and have never had implemented based on the theory of diffusion of innovation. As a result, the current study surveyed the previous studies about encouraging and resistance factors of ICT utilization in light of the theory of diffusion of innovation and environmental encouraging factors by Ely. Then, the efforts were made to present suggestions to encourage the utilization of ICT in schools.
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조아해 ( Ah Hae Cho ),박병호 ( Byung Ho Park ) 한국안전학회(구 한국산업안전학회) 2017 한국안전학회지 Vol.32 No.1
This study deals with the roundabout traffic accidents by traffic impeding factor. The purpose of this study is to comparatively analyze the characteristics of accidents and to develop the accident models. In pursuing the above, this study used a statistical program SPSS 20.0 to analyze 2,342 accidents occurred within 79 roundabouts in Korea. The main results are as follows. First, 4 accident models which were all statistically significant were developed. Second, the traffic volume and width of right-turn-only lane were analyzed to be common variable in the bus stop related models. The variables such as right-turn-only lane, street light, turning radius of entry lane were selected as specific variables. Especially street light and turning radius of entry lane were evaluated to have negative effects to the accidents. It is, therefore, essential to install the street light and place a sufficient turning radius in order to reduce the roundabout accidents. Finally, the traffic volume and number of entry lane were analyzed to be common variable in the on-street parking related models. Also, the width of right-turn-only lane and bus stop were evaluate to be specific variables in the model with on-street parking. This can be expected to give some implications to making the accident reduction guidelines.
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로지스틱 회귀분석을 활용한 블록단위 주차시스템의 청주사례 연구
한수산 ( Su San Han ),박병호 ( Byung Ho Park ) 충북대학교 건설기술연구소 2011 建設技術論文集 Vol.30 No.2
이 연구는 지방도시의 블록단위 주차시스템을 다루고 있다. 연구의 목적은 블록단위 주차시스템을 설명하고, 설문조사를 기반으로 이 시스템을 연구하는 것이다. 이를 위해, 특정 60명의 주민 의견을 분석하고 로지스틱 회귀모형을 개발한다. 주요 결과는 다음과 같다. 첫째, 주차공간의 없음의 수가 65%로 그룹 내에서 가장 높은 것으로 분석되었다. 둘째, 블록단위 주차시스템 모형의 Nagellerke R2 값이 0.227이고, 주차공간 유무에 따른 모형의 Nagellerke R2의 값은 0.263으로 모형 모두 유의한 것으로 분석되었다. 셋째, 두 가지 로지스틱 회귀모형의 독립변수가 개발되었다. 마지막으로 두 모형 모두 분류 정확도가 71.7%와 81.7%로 높은 정확도로 분석되었다. This study deals with the block-unit parking system of local cities. The objectives is to explain the system and to analyze the system based on the questionnaire survey. In pursuing the above, this study gives particular emphasis to studying the citizen`s opinions of 60 person and developing the logistic regression model. The main results are as follows. First, the number with no parking space was analyzed to account for about 65°c of total and to be highest among all groups. Second, Nagellerke R2 of model (for and against the block-unit parking system) was analyzed to be 0.227 and Nagellerke R2 of model (with and without parking space) was analyzed to be 0.263. Third, 2 logistic regression models which were all statistically significant were developed. Finally, the correct classification rates were analyzed to be 71.7% and 81.7%, respectively.
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