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이병무,윤영중 한국전자파학회 2002 한국전자파학회논문지 Vol.13 No.1
본 논문에서는 전력증폭기를 슬롯이 적재된 삼각형 마이크로스트립 패치 안테나와 동일 평면의 기판에 집적화하여 전력증폭기 출력단의 제 3 고조파 튜닝을 안테나가 수행함으로써 전력효율을 향상시키는 효과와, 실제 집적화에 따른 송.수신 신호의 분리 문제를 위해 이중공진, 이중급전을 이용한 능동 집적 안테나의 특성을 고찰하였다. 제 3 고조파에서 방사를 억제 구조로서 안테나에 슬롯을 적재시킨 능동 집적 안테나를 설계, 제작하여 측정한 결과, B급 전력증폭기와 안테나를 각각 제작하여 결합한 형태보다 약 5 %의 전력효율 개선 효과를 얻을 수 있었다. 또한, 송.수신 분리에 대하여서도 IMT-2000주파수 대역의 수신 port에서 송신 주파수의 신호를 -35 dB 이하로 격리시키는 특성을 나타냄을 관찰할 수 있었다. This paper presents novel architectures for power amplifier (PA) relying on 3rd harmonic-tuning technique and dual feeding antenna structure for the isolation of the Tx and the Rx ports. Active integrated antenna (AIA) with power amplifier makes the problem of the isolation between the Tx and the Rx ports occur So, this paper suggests dual feeding and dual resonant structures of the AIA with PA are possible to obtain the high isolation between the Tx and the Rx signals. Dual resonant triangular microstrip antenna, which can replace power amplifier tuning circuit, with slots-loaded and characteristic of the isolation between the Tx and the Rx ports using inset microstrip line feeding and probe feeding methods is proposed and experimentally studied for the case of thin substrate.
초등학교 웹사이트에서의 내용 접근성 향상을 위한 메뉴 구조 분석
이병무,고대곤,유인환,Lee, Byeong-Mu,Kho, Dae-Ghon,Yoo, In-Hwan 한국정보교육학회 2003 정보교육학회논문지 Vol.7 No.2
In this study, the six types of menu were suggested according to analysis of elementary school website about informational structure, depth and width of the menu, method of arrangement, suggesting form of the menu, ease the menu usage. And we design and develop the menu, and test, adapting the six types of menu on the same control condition, for the purpose of test about affective response and effectiveness, efficiency in user's utilizing these menus. As a result, the menu type of upper part drop-down type and left part suggesting after upper part suggesting type were testified as a menu type of high approach and recognition in the elementary schools web site.
Clinical Features of Drug-induced Liver Injury According to Etiology
이병무,이웅철,장재영,안평,김진녕,정승원,박의주,이세환,김상균,차상우,김영석,조영덕,김홍수,김부성 대한의학회 2015 Journal of Korean medical science Vol.30 No.12
Drug-induced liver injury (DILI) is an increasingly common cause of acute hepatitis. We examined clinical features and types of liver injury of 65 affected patients who underwent liver biopsy according DILI etiology. The major causes of DILI were the use of herbal medications (43.2%), prescribed medications (21.6%), and traditional therapeutic preparations and dietary supplements (35%). DILI from herbal medications, traditional therapeutic preparations, and dietary supplements was associated with higher elevations in aspartate aminotransferase (AST) and alanine aminotransferase (ALT) levels than was DILI from prescription medications. The types of liver injury based on the R ratio were hepatocellular (67.7%), mixed (10.8%), and cholestatic (21.5%). Herbal medications and traditional therapeutic preparations were more commonly associated with hepatocellular liver injury than were prescription medications (P = 0.002). Herbal medications and traditional therapeutic preparations induce more hepatocellular DILI and increased elevations in AST and ALT than prescribed medications.
Some characterizations of the weak integrable function and the weak operator
이병무 대구효성가톨릭대학교 1997 연구논문집 Vol.56 No.2
In this paper, we study the properties of the weak* integrable function and related topics in some more detail. And we generalize the properties of the Dunford operator induced by J.Diestel and J.J. Uhl, Jr[3]. In this paper, we study some characterizations of the weak* intergrable function and related topics. And we define an operator with respect to a weak* integrable function, as a weak* analogue of the Dunford operator, and investigate its properties.
전이성 췌장암에서 젬시타빈 단독 요법 후 완전관해 유사 반응을 보인 1예
이병무,민현준,안평,박상현,한상완,김대용,윤재훈,김진봉 대한췌담도학회 2013 대한췌담도학회지 Vol.18 No.1
Pancreatic cancer is well known to have a very poor prognosis that is under 5% of five years survival rate. Especially, metastatic pancreatic cancer has poor responses to both of chemotherapy and radiation therapy. There are many clinical trials of variable chemo-regimens, but there is no proved regimen better than gemcitabine based therapy. A 71 years old male patient was diagnosed with 2.8 × 1.9cm sized advanced pancreatic body cancer with liver, mediastinal and both supraclavicular lymph nodes, right ischial bone metastasis in July, 2011. He was taken chemotherapy of gemcitabine single regimen, and his radiological findings after 10th cycles of chemotherapy revealed a near complete response. The authors report this rare case of near complete response with gemcitabine single chemotherapy in advanced pancreatic cancer with multiple metastasis.