1~3 GHz 대역용 계산가능 다이폴안테나의 접지판 위 안테나 인자 특성

임성민,김상명,정성우,김기채,Lim, Sung-Min,Kim, Sang-Myung,Jung, Sung-Woo,Kim, Ki-Chai 한국정보통신학회 2015 한국정보통신학회논문지 Vol.19 No.9

본 논문은 하이브리드 발룬을 갖는 계산가능 다이폴안테나가 접지판 위에 수평 및 수직으로 놓여 있을 경우의 안테나 인자 특성을 모멘트법으로 검토하고 있다. 안테나 인자의 표현식은 전력부정합손실의 개념을 적용하여 도출한 식을 사용하였으며, 안테나 인자의 계산에서 나타나는 안테나의 입력 임피던스 및 유효길이는 모멘트법을 적용하여 계산하고 있다. 그 결과, 접지판 위에서의 안테나 인자 특성은 안테나의 편파상태에 따라 달라지며 자유공간 안테나 인자와는 최대 ± 0.14 dB 의 차이가 발생함을 알 수 있었다. 또한, 수평편파인 경우의 안테나 인자 변동폭이 수직편파인 경우보다 0.2 dB 정도 더 크다는 것도 확인할 수 있었다. This paper presents the antenna factor characteristics of a calculable dipole antenna with a hybrid balun, installed above ground plane vertically and horizontally, using Method of Moments (MoM). An expression for the antenna factor is formulated using the concept of power mismatch loss. The input impedance and effective length of the antenna, which are in the formula of the antenna factor, are calculated using the MoM. The results show that the antenna factors above a ground plane are agreed with the free space antenna factors within ± 0.14 dB. The horizontal antenna factors are varied more by 0.2 dB than the vertical antenna factors.

국립재활원 뇌졸중 환자의 협진에 대한 인식 및 수요 조사 연구

임성민,송성은,Lim, Sung-Min,Song, Sung-Eun 대한예방한의학회 2011 대한예방한의학회지 Vol.15 No.1

Objective : The purpose of this study was survey about the recognition and demand on cooperative system between western and oriental medicine of stroke patients in National Rehabilitation Center. Methods : The participants were 205 stroke patients in the National Rehabilitation Center and investigated the recognition and demand on cooperative system between western and oriental medicine. Results : As to general characteristics of the group, 56.9% were male, 30.7% were in the 60~69 age, 24.3% of patients had an average income per month 1.0~2.0 million. In regard to disease status of patients, 53.8% were cerebral infarction, 35.8% were below 6 month in disease duration, 73.7% were none recurrence, 52.8% were hypertension as related disease, 74.5% were motor paralysis sequela. 83.2% were positive response in using oriental medicine department of National Rehabilitation Center. The most wanted therapy was acupuncture. Most of respondents expected that co-operative treatments were to be improving the cure effect for patients. And they wanted cooperative system combined evenly between western and oriental medicine, so the western doctors and the oriental doctors suggest the plan giving lots of medial benefits for patients. Conclusion : This survey showed the recognition and demand on cooperative system between western and oriental medicine of patients in National Rehabilitation Center. It is possible to realize patient's centered treatment under the stable and efficient cooperation of western and oriental medicine.

사회 네크워크 분석으로 본 수강신청 행태

임성민,김진흠,Lim, Sung-Min,Kim, Jinheum 한국통계학회 2013 응용통계연구 Vol.26 No.4

본 논문에서는 S 대학교 2012년 1학기 수강신청 자료를 이용하여 학생들의 수강신청 행태를 분석하였다. 학생과 과목의 링크로 이루어진 2-모드 네트워크 자료를 학생과 학생의 링크로 이루어진 1-모드 네트워크 자료로 변환하였다. 학생들의 수강신청 행태를 자세히 살펴보기 위해 전체 네크워크를 단과대학별로 컴포넌트나 커뮤니티 같은 하위 네크워크로 세분한 후 중심성 지표 값을 통해 하위 네트워크의 특징을 설명하였다. 또한 다중 회귀분석모형을 써서 성별, 학년, 중심성 지표가 학점에 미치는 영향을 살펴보았다. We investigate the class registration behavior of college students with data collected from the spring semester of 2012. The network originally consists of a 2-mode network between a student and class subjects. We first transform the 2-mode network into 1-mode network of students. We also subdivide it into a smaller network such as components and communities to understand the detailed behavior of students in class registration. Finally, the relationship between GPA and the centrality measures, gender, and grade of students is analyzed using a multiple regression analysis.

증례 : 소화기 ; 등쪽 췌장무발생과 폐 낭종성병변을 동반한 위의 중복낭종

임성민 ( Sung Min Lim ),이혁 ( Hyeug Lee ),전은정 ( Eun Jung Jeon ),오정환 ( Jung Hwan Oh ),이상학 ( Sang Haak Lee ),최상욱 ( Sang Wook Choi ),이성 ( Seong Lee ) 대한내과학회 2009 대한내과학회지 Vol.76 No.2

위의 중복 낭종은 드문 선천성 기형으로, 본 증례에서는 특별한 증상 없이 건강 검진에서 발견된 폐의 낭종성 병변으로 내원하여 우연히 진단되었다. 폐의 낭종성 기형과 동반된 식도 중복이나 위의 중복은 보고되고 있으며, 환자의 경우도 연관된 선천성 기형 가능성을 배제할 수 없는 상태이다. 또한 특별한 증상은 없었지만, 검사에서 우연히 췌장의 배쪽 무발생이 발견되었으며, 우리나라에서 위의 중복낭종과 동반하여 보고된 증례는 없다. 이에 저자들은 문헌고찰과 함께 증례를 보고하는 바이다. Gastric duplication cysts and dorsal pancreatic agenesis are rare congenital anomalies, and little is known of the association between these two anomalies. A 17-year-old woman was admitted with a cystic lung mass detected as part of a health screening program. Chest computed tomography (CT) showed a cystic lung lesion in the right lower lobe and an incidental cystic abdominal mass. She had no specific symptoms or signs. Abdominal CT and endoscopic ultrasonography (EUS) revealed a 9×7×5.5-cm cystic mass and agenesis of the body and tail of the pancreas. The cyst was removed successfully using laparoscopic gastric wedge resection. Microscopically, the muscle coat of the cyst wall was fused with the muscle layer of the stomach. Therefore, the cystic mass was diagnosed as a gastric duplication cyst. We present a patient with a pulmonary cystic lesion associated with two congenital anomalies: a gastric duplication cyst and dorsal pancreatic agenesis. (Korean J Med 76:203-208, 2009)

헬스케어 기반의 고령자 친화형 스마트 홈 공간계획에 관한 연구

임성민(Lim, Sung-Min),정재희(Chung, Jae Hee) 대한건축학회 2014 대한건축학회 학술발표대회 논문집 Vol.34 No.2

소세포성 폐암과 연관된 망막증

임성민 ( Seong Min Lim ),배종오 ( Jong Oh Bae ),조상건 ( Sang Geon Cho ),강상구 ( Sang Gu Kang ),이은영 ( Eun Young Lee ),김성국 ( Sung Kuk Kim ),김영 ( Young Kim ),곽진영 ( Jin Young Kwak ),김귀완 ( Kwi Wan Kim ) 대한결핵 및 호흡기학회 2005 Tuberculosis and Respiratory Diseases Vol.59 No.6

도시형생활주택 주거환경 개선방안에 관한 연구 - 수원시청역 주변 도시형생활주택 중심으로 -

임성민(Lim, Sung Min),김경순(Kim, Kyoung Soon) 대한건축학회 2022 대한건축학회 학술발표대회 논문집 Vol.42 No.2

Urban living housing has become a new residential type since its appearance in 2009. It has achieved about 730,000 performances in 13 years. However, due to the supply-oriented system, it does not reflect various lifestyles as a uniform residential unit. For profit, the residential environment of the residents has not improved, and the damage is going to the actual residents, and the system that is not socially reflected is in place. We should strive to improve the residential environment of residents and reflect the various lifestyles of the city by presenting the institutional direction of urban living housing and the direction of improving the architectural residential environment.

국립재활원 협진의료 이용실태와 발전방안 제안

임성민 ( Sung Min Lim ) 대한한의진단학회 2014 大韓韓醫診斷學會誌 Vol.18 No.1

Objective This study aims to understand the actual utilization of the oriental rehabilitation medicine center of the initial interdisciplinary medical care at the National Rehabilitation Center and to arrange proper development plans for more effective interdisciplinary medical services for future activation of interdisciplinary medical care. Method: The interdisciplinary patient status, composition of patient care, and major disease-related status were studied and analyzed for oriental rehabilitation medication relating to interdisciplinary medical care at the National Rehabilitation Center. Furthermore, the interdisciplinary status and its operating conditions were evaluated to devise a development plan for the National Rehabilitation Center. Results: As a result of the analysis of oriental rehabilitation medical care diagnosing status utilization at the National Rehabilitation Center regarding interdisciplinary medical care, the ratio of the number of those receiving interdisciplinary oriental rehabilitation medical care was less than half of the total receiving interdisciplinary care. As the major disease status from the patients of interdisciplinary care, stroke patients covered the large majority, and musculoskeletal pain patients covered the majority of outpatients. The establishment of additional oriental medication departments and assigning of interdisciplinary coordinators were presented as the goals of a development plan for the manpower and structural side of interdisciplinary medical care at the National Rehabilitation Center. On the institutional and systematic side, improvement in the interdisciplinary hierarchy and interdisciplinary model development based on the number of patients per disease was proposed. In addition, operation on ward bedding and construction of interdisciplinary EMR medical care is necessary on the medical and administration service side. Conclusion: To understand the actual utilization and to arrange development plans aimed at constructing a safe and effective interdisciplinary hierarchy for interdisciplinary medical care at the National Rehabilitation Center, patient-centered care needs to be implemented.

패스트 배션(Fast Fashion) 도입에 따른 패션 업계의 대응 전략 연구

임성민 ( Sung Min Lim ),최주영 ( Ju Young Choi ),김미숙 ( Mi Sook Kim ) 服飾文化學會 2008 服飾文化硏究 Vol.16 No.3

부공동에 손실 유전체를 충진한 함체 케이스의 공진 특성

임성민(Sung Min Lim),정성우(Sung-Woo Jung),김기체(Ki-Chai Kim) 한국전자파학회 2009 한국전자파학회논문지 Vol.20 No.9

본 논문에서는 본 논문에서는 함체 케이스의 내부에 손실 유선체를 충진한 부공동을 설치하고 함체 케이스 내부로 공급된 전력과 반사 계수를 계산하여 함체의 공진 특성을 검토하고 있다. 이론 해석으로는 내부 전자파원의 전류 분포 및 부공동 개구면에서의 전계 분포에 관한 연립 적분방정식을 유도하교 Galerkin의 모멘트법으로 해석하였다. 이론 해석 결과, carbon을 함유한 발포 폴리스티렌을 손실 유선체로 사용하여 부공동의 크기와 carbon 함유양을 조절함으로써 함체 케이스의 공진 특성을 제어하여 함체 내부의 전자파 방사 크기를 저감사킬 수 있음을 보이고 았으며, 공급 전력의 실험치와도 비교하여 이용 해석의 타당성을 확인하고 있다. This paper presents the delivered power and reflection coefficient in metallic shielding enclosure with a sub-cavity, which are evaluated with the method of moments, and describes a method for controlling the resonance characteristics of the metallic cavity by putting lossy dielectric material in the sub-cavity. In this paper we introduce carbon polystyrene-foam as lossy dielectric material and observe it's effects of reduction when the dimensions of the sub-cavity and permittivity of lossy dielectric material are changed. The results show that the reduction of the electromagnetic radiation can be achieved by controlling the amount of carbon in lossy dielectric material and the dimensions of the sub-cavity. The theoretical analysis is verified by the measured delivered power.