頭蓋骨骨幹端不全形成症

김현수(Kim Hyung Soo),강신혁(Kang Shin Hyuk),이석현(Lee Suck Hyun),유명철(Yoo Myung Chul) 대한정형외과학회 1976 대한정형외과학회지 Vol.11 No.4

Poly-TPD/PVK 이중 박막 정공수송층 구조의 양자점발광다이오드

김현수,이도형,김바다,황보람,김창교,Kim, Hyun Soo,Lee, Do Hyung,Kim, Bada,Hwang, Bo Ram,Kim, Chang Kyo 한국전기전자재료학회 2019 전기전자재료학회논문지 Vol.32 No.5

A poly[bis(4-butypheny)-bis(phenyl)benzidine] (poly-TPD) and poly(9-vinylcarbazole) (PVK) bilayer was employed as a hole transport layer (HTL) in solution-processed CdSe/ZnS quantum dot light-emitting diodes (QLEDs). The thickness of the PVK layer spin-coated onto the poly-TPD layer, whose thickness was fixed to 40 nm, was varied, with PVK layer thicknesses of 0 nm, 35 nm, 45 nm, and 55 nm. Because the thickness of the PVK can determine the hole transport properties of the HTL, a PVK thickness that maximizes the performance of the HTL for the QLEDs was investigated. By employing the optimized PVK thickness of 45 nm, the current efficiency of the QLED exhibited a 1.74 times improvement when compared with that of the QLED with poly-TPD based HTL without PVK. This was mainly attributed to the decrease in the energy barrier between the HTL and the quantum dot (QD) emitting layer (EML).

담낭염과 폐렴을 동반한 전염성 단핵구증 1례

김현수,김형석,신영규,은백린,박상희,차상훈,Kim, Hyun Soo,Kim, Hyung Suk,Shin, Young Kyoo,Eun, Baik Lin,Park, Sang Hee,Cha, Sang Hoon 대한소아감염학회 1997 Pediatric Infection and Vaccine Vol.4 No.1

Acute infectious mononucleosis, caused by Epstein-Barr virus(EBV), is a self limited lymphoproliferative illness that is common in adolescents and young adults. It shows many complications in multiple organ systems, but the hepatobiliary and the respiratory complication is uncommon. We report a case with thickened gallbladder wall and pneumonia as complications of acute infectious mononucleosis in a child. Also the related literature were reviewed. A 4 year old boy presented with a history of high fever, cough, and abdominal distension for 20days. Physical Examination revealed audible crackles in whole lung field and gross hepatomegaly. Chest X-ray showed pneumonia and liver function tests were abnormal. Ultrasonography and computed tomography revealed a thickened gallbladder wall and hepatosplenomegaly. The diagnosis of primary Epstein-Barr viral infection was eventually made by specific serologic tests. The patients's fever subsided 6 weeks later and pneumonia was recovered around this time. Liver function tests returned near normal 2 months later and ultrasonography of gallbladder was normal at this time.

최적 공급사슬 구성을 위한 에이전트 협상방법론 개발

김현수,조재형,최형림,홍순구,Kim Hyun-Soo,Cho Jae-Hyung,Choi Hyung-Rim,Hong Soon-Goo 한국지능정보시스템학회 2006 지능정보연구 Vol.12 No.2

본 연구는 최적의 공급사슬을 구성하기 위해 다수의 주문을 다수의 참여자에게 할당하기 위한 방법으로 에이전트 협상을 이용하였다. 본 에이전트 협상은 투명한 정보공유를 바탕으로 참여자간의 전략적 협력관계를 형성하기 위한 조정 메커니즘을 제공하고 있으며, 모든 참여자(주문자, 제조자, 공급자)가 자신의 이득을 달성하고, 공급사슬 전체 관점에서도 파레토 최적해가 달성됨을 보여주고 있다. SET 모델기반의 스케줄링에서 지연생산비용과 조기생산비용이 발생되고, 경쟁적 관계에 놓인 다수의 참여자를 고려하였다. 이러한 동적공급사슬 환경에서 에이전트 협상의 결과가 파레토 최적해임을 증명하고, 성능을 검증하기 위해 수리적 모형을 수립하고, 휴리스틱 방법론과 비교하는 실험을 진행하였다. In an effect to composite an optimal supply chain, this study has introduced an agent-based negotiation as a method to assign a lot of orders to a large number of participants. As a resources allocation mechanism to form a strategic cooperation based on information sharing between supply chain members(buyers, manufacturers, suppliers), this agent negotiation provides coordination functions allowing all participants to make a profit and accomplishing Pareto optimum solution from the viewpoint of a whole supply chain. A SET model-based scheduling takes into consideration both earliness production cost and tardiness production cost, along with a competitive relationship between multiple participants. This study has tried to prove that the result of an agent-based negotiation is a Pareto optimal solution under the dynamic supply chain environment, establishing the mathematical formulation for a performance test, and making a comparison with the heuristic Branch & Bound method.

가상교육의 핵심성공 요인

김현수 ( Hyun Soo Kim ),최형림 ( Hyung Rim Choi ),김선희 ( Seon Hee Kim ) 한국교육공학회 1999 교육공학연구 Vol.15 No.1

마이크로피닝 처리된 미소노치를 갖는 Al7075-T6합금의 피로특성

김현수(Hyun-Soo Kim),정연미(Yeon-Mi Cheong),김태형(Tae-Hyung Kim),정성균(Seong-Kyun Cheong) 한국생산제조학회 2009 한국공작기계학회 추계학술대회논문집 Vol.2009 No.-

Recently, most of products in IT and machine industry have become smaller and smaller keeping high strength. Existing shot peening has been applied to the industries dealing with big products, but it is not easy to apply the existing technique to the products which are small and IT-realted. In the study, the micro peening system that will be used in small products was devised and the fatigue characteristics of Al7075-T6 was investigated.

외란관측기를 이용한 새로운 데드타임 보상법

김현수(Hyun-Soo Kim),문형태(Hyung-Tae Moon),김명복(Myung-Bok Kim),윤명중(Myung-Joong Youn) 전력전자학회 1999 전력전자학술대회 논문집 Vol.1999 No.7

A new dead-time compensation method using a disturbance observer is proposed the dead-time causes the voltage distortion and It can be considered as the disturbance voltage in this paper, the disturbance voltage is estimated by minimal order observer m the d-q frame and the estimated disturbance voltage IS summed with voltage command by a feed-forward. The experiments are earned out DSP-based BLDC motor drive system results show the effectiveness of the method.<br/> for the and the proposed

초등학교 진로교육 및 진로집중 학년·학기제에 대한 교사 인식 분석

김현수(Hyun-Soo Kim),김형균(Hyung-Gyun Kim) 공주교육대학교 초등교육연구원 2022 敎育論叢 Vol.59 No.2

This study analyzed the teacher's perception of career education, the actual status and demand of career education guidance, and the overall perception of the intensive grade and semester system of career education for elementary school teachers. The survey was conducted in three regions (Chungnam, Sejong, and Daejeon), and the final collected questionnaire was 238. Statistical processing of the collected data was analyzed using the SPSS ver 21.0 program, and frequency analysis and 22 verification methods were used. The main results of this study are as follows. First, as a result of analyzing teachers' perceptions of career education, the necessity and importance of career education in elementary school were highly recognized. After the 2015 revised curriculum, despite the expansion of the role and status of career education, it was found that teachers in schools did not experience any changes in career education. Second, as a result of the analysis of the reality and needs of career education guidance, career education was mainly conducted during‘creative experience activities', and the focus of guidance was mainly in the‘exploration of one's own interest and aptitude'. The most effective career education method was "career experience activities and various events,”and "lack of career education materials and systematic programs”was cited as the biggest difficulty in career education. Third, as a result of analyzing the perception of the career education intensive grade and semester system, most of the teachers responded that they did not know that they could operate the career education intensive grade and semester system in elementary schools, and there were many negative responses to the need for operation. When implementing an intensive career education grade and semester system in elementary schools, "second semester of sixth grade”was selected as the appropriate time. The results of this study show that despite the expansion of the status and role of career education at the national level, teachers' perception of changes in the educational paradigm is relatively low and that changes in the field are insufficient. For the development of career education in elementary schools, further research is required to recognize and support the practical needs of the educational field by analyzing teachers' perceptions in more depth based on the results of this study. 본 연구는 초등학교 교사를 대상으로 진로교육에 대한 교사의 인식, 진로교육 지도실태 및 요구, 진로교육 집중학년·학기제에 대한 전반적인 인식을 분석하였다. 설문 조사는 3개지역(충남, 세종, 대전)을 대상으로 하였으며 최종 수집된 설문지는 238부였다. 수집된 자료의 통계처리는 SPSS ver 21.0 프로그램을 사용하여 분석하였으며, 빈도분석과 χ2검증 방법을 이용했다. 본 연구의 주요 결과는 다음과 같다. 첫째, 진로교육에 대한 교사의 인식을 분석한 결과, 초등학교 진로교육의 필요성 및 중요성을 매우 높게 인식하고 있었다. 2015 개정 교육과정 이후, 진로교육의 역할 및 위상이 확대되어감에도 불구하고 학교에서 교사들은 진로교육에 대한 변화를 전혀 체감하지 못하고 있는 것으로 나타났다. 둘째, 진로교육 지도실태 및 요구에 대한 분석결과, 진로교육이 주로‘창의적 체험활동’ 시간에 이루어지며, 중점 지도 내용은‘자신의 흥미·적성 탐색’영역이 주를 이루었다. 가장 효과적인 진로교육 방법은‘진로 체험활동 및 각종 행사’로 나타났고 진로교육의 가장 큰 어려움으로 ‘진로교육 자료 및 체계적인 프로그램 부족’을 꼽았다. 셋째, 진로교육 집중학년·학기제에 대한 인식을 분석한 결과, 다수의 교사가 초등학교에서 진로교육 집중학년·학기제를 운영할 수 있다는 것에 대해서 대부분‘모른다.’라는 반응을 보였고, 운영의 필요성에 대해서도 부정적인 응답이 많았다. 초등학교에서 진로교육 집중학년·학기제를 시행할 경우, 적절한 시기로‘6학년 2학기’를 꼽았다. 본 연구의 결과는 국가적 차원에서 진로교육의 위상과 역할이 확대되어감에도 불구하고 교육 패러다임의 변화에 대한 교사의 인식이 비교적 낮다는 것과 현장에서 변화가 미비한 실정임을 보여준다. 초등학교 진로교육의 발전을 위해 앞으로 본 연구의 결과를 기초로 하여 교사의 인식을 더욱 심층적으로 분석하여 교육 현장의 실제적인 필요를 인식·지원할 수 있는 연구가 더욱 요구된다.

B 형 간염백신의 면역성에 관한 5 년간 추적 관찰

김현수(Hyun Soo Kim),양동은(Dong On Yang),신동현(Dong Hyeon Shin),김형원(Hyung Won Kim),김세종(Sei Jong Kim) 대한내과학회 1991 대한내과학회지 Vol.41 No.2

N/A The immunogenicity of plasma derived HB vaccine (Hepavax®) was studied for 5 years in 25 volunteers negative for 5 HBV markers with normal transaminase levels. The vaccines were administered intramuscularly in the deltoid muscle at 0, the 1st and 6th month. Secondary booster immunization was done in 5 cases whose antibody titers were lower than 10 mIU/ml at the 24th month. The doses of vaccine were 20㎍ in patients over 10 years old and 10㎍ in those under 10 years old. The serum transaminase levels were checked with enzyme kinetic method and the HBsAg and anti-HBs were checked with EIA technique (mIU/ml) quantitatively at the 1st, 3rd, 6th, 9th, 12th, 24th, 36th and 60th month after primary immunization. The results were as follows: 1) The positive conversion rates of anti-HBs (over 10 mIU/ml) were 16%, at the 1sf month, 48% at the 3rd month, 72% at the 6th month, 96% at the 9th month, 96% at the 12th month, and 80% at the 24th month. After secondary booster immunization, the overall positive conversion rates increased to 96% at the 36th and 60th month. 2) The titers of anti-HBs over 50 mIU/ml increased to 92% at the 12th month and then decreased 64% at the 24th month. After secondary booster immunization, titers of anti-HBs over 50 mIU/ml were 76% at the 36th month and 72% at the 60th month. 3) After secondary booster immunization for these 5 anti-HBs negative cases (GM±SD, 3.8±2.1) at the 24th month, all of them became seroconverted, and the anti-HBs geometric mean titer increased to 137.6±91.0 at the 36th month and then showed a decreasing tendency progressively to 77.1±55.1 at the 60th month. 4) In the group under 15 years old, the positive conversion rates of anti-HBs (over 10 mIU/ml) increased to 100% at the 9th, 12th, and 24th month, and then decreased 94% at the 36th and 60th month. The titers of anti-HBs over 50 mIU/ml increased to 100% at the 9th and 12th month respectively, and then decreased 75% at the 24th month, 81% at the 36th month and 75% at the 60th month.

폐결핵으로 오인된 폐흡충증

김현수 ( Hyun Soo Kim ),고영선 ( Young Sun Ko ),곽현정 ( Hyun Jung Kwak ),이희경 ( Hee Kyung Lee ),김상헌 ( Sang Heon Kim ),김태형 ( Tae Hyung Kim ),손장원 ( Jang Won Sohn ),윤호주 ( Ho Joo Yoon ),신동호 ( Dong Ho Shin ),박성수 ( 대한결핵 및 호흡기학회 2007 Tuberculosis and Respiratory Diseases Vol.63 No.5

Paragonimiasis mainly occurs by ingestion of raw or undercooked freshwater crabs or crayfish. In our country, the prevalence of paragonimiasis was high until late 1960s due to eating habits, but after the 1970s the prevalence of the disease has markedly decreased and now the disease is rarely seen. As the clinical and radiological features as well as the laboratory findings are similar to that of pulmonary tuberculosis, the differential diagnosis of pulmonary paragonimiasis is very difficult. We experienced a case of a patient with pulmonary paragonimiasis who was treated as having pulmonary tuberculosis. (Tuberc Respir Dis 2007;63:440-443)