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김영일,노경호,김기홍,임승철,이숙진,김호영,최각진,Kim, Yeong-Il,Nho, Keong-Ho,Kim, Ki-Hong,Lim, Seng-Chul,Lee, Suk-Jin,Kim, Ho-Yeong,Choi- Kak-Jin 한국전자통신연구원 1990 전자통신동향분석 Vol.5 No.4
본 고에서는 통신의 궁극적인 목표라 할 수 있는 이동통신 시스템 설계시 중요한 변수로 등장하고 있는 핸드오버 알고리즘의 개발전략을 세우기 위해서 기존의 애널로그 이동통신에서 사용하고 있는 핸드오버 개념과 기술적인 배경에 대해서 분석하고, 핸드오버 성능을 평가하는 시뮬레이터 구성시 고려해야 할 사항등에 대해서 분석 검토하였다.
김영일,안동현,김현재,이용수,채수창,김석찬,박동찬,Kim, Yeong-Il,An, Dong-Hyeon,Kim, Hyeon-Jae,Lee, Yong-Su,Chae, Su-Chang,Kim, Seok-Chan,Park, Dong-Chan 한국통신학회 2007 정보와 통신 Vol.24 No.5
최근 WiBro/WiMAX에서 기지국의 용량증대와 셀의 크기를 확정하는 것을 목적으로 하는 RS(Relay Station)에 대한 표준화가 IEEE 802.16j에서 이루어지고 있다. RS는 기존의 아날로그 중계와 달리 수신신호를 복조 및 복호화한 후 특정 처리과정을 거친 후 다시 부호 및 부호화하여 전송하는 기능을 갖는다. 초고속 휴대인터넷서비스를 제공하고 있는 초고속 무선인터넷서비스 시장에 대한 수요의 증대로 WiBro/WiMax시장의 활성화와 IEEE 802.16j에 대한 표준화의 진척에 따라 WiBro용 RS(Relay Station)상용제품이 조만간 출시 될 것으로 보인다. 본고에서는 WiBrro용 MMR(Mobile Multi-hop relay)기술의 표준화 동향과 요소기술, MMR망의 성능분석에 대해서 기술한다.
족삼리(足三里)(St36)의 전침자극(電鍼刺戟)이 fMRI상 뇌활성(腦活性) 변화(變化)에 미치는 영향(影響)
김영일,김영화,임윤경,이현,이병렬,김연진,Kim, Young-il,Kim, Young-hwa,Lim, Yun-kyoung,Lee, Hyen,Lee, Byung-ryul,Kim, Yeon-jin 대한침구의학회 2003 대한침구의학회지 Vol.20 No.5
Objective: Recently. many studies have showed the evidences of the effect of the Electro-acupuncture treatment through scientific. Methods : One of these methods is functional MRI. We performed electro-acupuncture on Zusanli(St36) and observed the change of brain activation using fMRI. Zusanli(St36) is located on the lateral side of the lower leg. 3 cun(寸) inferior to the Patella of the lower border. Theoretically and clinically. this point has been considered very important for gynecological disorders. spleen and stomach disorders. and psychological disorders. To see the effects of electro-acupuncture stimulation on Zusanli(St36). the experiment was carried out on twelve healthy volunteers. using the gradient echo sequence with the 3.0T whole-body fMRI system(ISOL). After the needle insertion on right Zusanli(St36). 2 Hz of electric stimulation was given for 30 seconds. repeated five times. with 30 seconds' intervals. The Image analysis including motion correction. talairach transformation, and smoothing was done with SPM99. Results ad conclusion : The electro-acupuncture stimulation on Zusanli(St36) activates Brodmann Area 6, 13, 2, 19, 21, 22, 39, 40, 38, 3which indicates the pathways of the electro-acupuncture stimulation on Zusanli(St36) and the possibility of the relationship of the electro-acupuncture stimulation on Zusanli(St36) with autonomic nervous system, internal organic system.
김영일,강병하,최성호,김용열,김인택,전호철,Kim Yeong-Il,Gang Byeong-Ha,Choe Seong-Ho,Kim Yong-Yeol,Kim In-Taek,Jeon Ho-Cheol 대한설비공학회 2006 설비저널 Vol.35 No.7
지역난방의 효율향상을 위한 수요관리사업을 보다 효과적으로 수행하기 위하여 사업의 개요, 목적 및 분류, 국내외 사례조사, 사업의 내용 및 범위, 추진 방향 및 평가 방법, 활용방안 및 기대효과 그리고 수요관리사업의 성공적인 시행을 위한 발전 계획을 제시한다.
토양(土壞)에서 분리(分離)한 Chitinase 생성(生成) 방선균(放線菌)의 분류동정(分類同定)
김영일,김용웅,김광식,Kim, Yeong-Yil,Kim, Yong-Woong,Kim, Kwang-Sick 한국토양비료학회 1988 한국토양비료학회지 Vol.21 No.3
Four actinomycetes which produces extracellular chitinase were isolated from soil and organic matter all over the Chonnam provincial area. The chemical composition, morphological, cultural and physiological properties of isolated strain S-25, S-42, S-172 and S-267 were studied in relation to the toxonomical properties. All of strains contained phospholipids such as phosphatidyl ethanolamine, phosphatidyl inositol and diphosphatidyl glycerol. The components of cell wall in all strains have L, L-DAP, Glutamic acid, Alanine, Glycine and Glucosamine. The surface of spore is smooth and colony is grey in all strains, Based on the results obtained in these experiments all of strains are identified as Streptomyces sp.S-25, Streptomyces sp.S-42, Streptomyces sp.S-l72 and Streptomyces sp. S-267. 전남일원(全南一圓)의 토양(土壤) 및 유기물(有機物)로부터 분리(分離)된 세포외(細胞外) Chitinase활성(活性)이 높은 방선균(放線菌) S-25, S-42, S-172, S-267균주(菌株)의 분류학적(分類學的) 특성(特性)을 검토(檢討)한 결과(結果)는 다음과 같다. 1. 형태적(形態的)으로 전균주(全菌株)가 Smooth한 표면구조(表面構造)의 포자(胞子)와 회색(灰色)의 기균사를 형성(形成)하였다. 그러나 포자(胞子)사슬의 형태(形態)는 S-25, S-172균주(菌株)가 Spiral type, S-42균주(菌株)는 Recticulum apertum type이었으며 S-267균주(菌株)는 Rectiflexibles type이었다. 2. 균주(菌株)의 화학적(化學的) 조성(組成)은 세포벽(細胞壁) 구성성분(構成成分)으로 L.L-diamininopimeric acid와 Glycine을 Phospholipid로서 Phosphatidyl inositol과 Phosphatidyl ethanolamine을 함유(含有)하였다. 3. 생리적(生理的) 특징(特徵)으로써 전균주(全菌株)가 호기성(好氣性)이었으며, 탄소원(炭素源)으로 Sucrose를 제외(除外)한 대부분의 당(糖)과 유기물(有機物)을 이용(利用)하였다. 4. 이상의 분류학적(分類學的) 특성(特性)을 검토(檢討)한 결과(結果) 각(各) 균주(菌株)를 Streptomyces sp. S-24, Streptomyces sp. S-42, Streptomyces sp. S-172 그리고 Streptomyces sp. S-267로 분류(分類), 동정(同定)하였다.
김영일,백운봉,김종하,현제만,이문영,박성원,김명환,Kim, Young-lhl,Paik, Un-Bong,Kim, Jong-Ha,Hyun, Jae-Man,Lee, Moon-Young,Park, Sung-Won,Kim, Myung-Hwan 대한악안면성형재건외과학회 1993 Maxillofacial Plastic Reconstructive Surgery Vol.15 No.4
The 2nd, 3rd, 4th 6th cranial nerve and the ophthalmic division of the 5th cranial nerve are derived from the optic foramen and superior orbital fissure. When these contents are attacked by a trauma the superior orbital fissure syndrome or the more severe orbital apex syndrome are onsetted. As their treatment we can consider the conservative treatment with the hypertonic solution and steroid. Also we can consider the more radical surgery. But their indications are debatable. As the emergency state the treatment plan requires rapid decision and very much considerations equaly. And the legal problems can be happened.
열적 제한요소를 고려한 열회수 증기발생기의 시동 특성 해석
김영일,김동섭,김재환,노승락,고상근,Kim, Young Il,Kim, Tong Seop,Kim, Jae Hwan,Ro, Sung Tack,Kauh, Sang Ken 대한기계학회 1999 大韓機械學會論文集B Vol.23 No.11
A thorough understanding of the transient behavior during start-up is essential in the design and operation of the heat recovery steam generator(HRSG). During this period of time, material that is exposed to high temperature and experiences a large temperature variation is subject to high thermal stress. In this work, a transient formulation of the HRSG is constructed including the estimation of the thermal stress and fatigue of the drum wall. Start-up behavior of a single-pressure HRSG is analyzed and the effect of bypassing part of the gas turbine exhaust flow on the thermal stress evolution is examined. It is found that the modulation of the gas flow rate using a bypass damper is very useful in view of reducing the thermal stress of the drum and ensuring the fatigue lifetime.
Management of isolated para-aortic lymph node recurrence after surgery for colorectal cancer
김영일,In Ja Park,Jin-Hong Park,Tae Won Kim,Jun-Soo Ro,Seok-Byung Lim,Chang Sik Yu,Jin Cheon Kim 대한외과학회 2020 Annals of Surgical Treatment and Research(ASRT) Vol.98 No.3
Purpose: The rare incidence of isolated para-aortic lymph node (PALN) recurrence of colorectal cancer has precluded the formulation of treatment guidelines. This study evaluated and compared the effects of different treatment modalities on survival outcomes in patients with PALN recurrence. Methods: Patients diagnosed with isolated PALN recurrence after curative resection for primary colorectal cancer from January 2004 to December 2014 were evaluated retrospectively. Patients with isolated recurrence were selected using imaging modalities. Overall survival (OS) and survival after recurrence (SAR) were analyzed and compared between different treatments using the Kaplan-Meier method. Results: The median OS was 64 months with a median follow-up time of 50 months. Of the 46 patients with PALN recurrence, 35 (76.1%) had isolated recurrences. Of these 35 patients, 16 underwent PALN resection and 19 received chemotherapy. Median SAR was significantly longer in patients who did than did not undergo resection (71 months vs. 39 months, P = 0.017). Median OS tended to be longer in patients who did than did not undergo resection (77 months vs. 62 months, P = 0.055). SAR was similar in patients who received radiotherapy and those who underwent resection (34 months vs. 46 months, P = 0.146). Three of 16 patients (18.8%) who underwent resection were found to be recurrence-free. Conclusion: Surgical resection of isolated PALN recurrence may benefit patients, with favorable survival outcomes and by providing definitive diagnosis for proper treatment planning.
다양한 형상의 동일 기종 항공기에 대한 성능개량 최적 구현 방안 연구
김영일,안승범,최명석,Kim, Youngil,Ahn, Seungbeom,Choi, Myeongseok 한국군사과학기술학회 2022 한국군사과학기술학회지 Vol.25 No.3
In this paper, we studied the optimal method of improving performance for aircraft having various variants within the same type. The study defined configuration of an entire fleet of aircraft being subject to a performance improvement program. And selected the most complicated aircraft configuration among them as a Standard Aircraft for modification by according to the proposed Aircraft Selection Process for developing an optimal Aircraft Performance Improvement Process. Based on the selected the Standard Aircraft, drew a system integration design result and carried out Evaluation Test and obtained Airworthiness Certification. Created the database with the design data of the Standard Aircraft, Evaluation Test, and Airworthiness Certification results, and applied it to variants of aircraft to complete the performance improvement program with optimized schedules and costs. By applying the proposed method to IFF performance improvement program, drew optimal system integration design and completed the program with minimized schedule.
스마트시티 에너지 감시를 위한 CIM(Common Information Model) 프로파일 설계
김영일,채창훈,김예리,이지훈,Youngil, Kim,Changhun, Chae,Yeri, Kim,Jihoon, Lee 한국전력공사 2022 KEPCO Journal on electric power and energy Vol.8 No.2
With the advent of high technologies such as the 4th Industrial Revolution and artificial intelligence and big data, efforts are being made to solve urban problems and improve the quality of life by applying new technologies in the smart city field. In addition, as carbon neutrality has emerged as an important issue due to global warming, smart city energy platform technologies such as urban energy management, efficiency improvement, and carbon reduction are in the spotlight. In order to effectively manage urban energy, energy resource information such as electricity, water, gas, hot water, heating, etc. must be collected from the management system of various energy utilities and managed on the central platform. The centrally integrated data is delivered to external city management systems that require city energy information through an energy platform. This study developed a CIM profile for smart city energy monitoring required to provide energy data to external systems. Electric data model were designed using the CIM class of IEC 61970, and water, gas, and heat data model were designed in compliance with the UML-based design ideas of IEC 61970.