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이동욱,김명기,이취중,김근중 동아대학교 공과대학 부설 한국자원개발연구소 1990 硏究報告 Vol.14 No.1
A spread spectrum(ss) communication system has a lot of advantage, such as realization of asynchronous code division multiplexing(CDM), robutness to narrow-band interference, imulse noise, privacy function, and so on. We have considered utilization of these advantage to develop a local area network(LAN) using such a transmission channel as a power-line. In this paper, we investigate its performance by constructing a LAN using SS technique.
기계실 위치 변화가 고효율 갠트리 크레인의 안정성에 미치는 영향 분석
한근조,이성욱 東亞大學校 2005 東亞論叢 Vol.42 No.-
This study was carried out to analyze the effect of machinery house loaction on the stability of high efficiency gantry crane which can improve the productivity of the container transportation work by reducing cycle time. The wind load was evaluated according to 'Load Criteria of Building Structures' enacted by the ministry of construction & transportation. The uplift forces of high efficiency gantry crane under this wind load were calculated by analyzing reaction forces at each supporting point. And variation of reaction forces at each supporting point was analyzed according to machinery house location.
한근조,안태원,이성욱,한동섭 동아대학교 생산기술연구소 2006 生産技術硏究所硏究論文集 Vol.11 No.-
Because strong wind is one of the few forces that, although considered in container crane design, still cause significant damage, a container crane was tested to investigate wind load characteristic in uniform flows. So, this study measured an external point pressure at the each members of a container crane according to a wind direction and a shape of members in a wind-tunnel test. The result of this test was compared to those of computation fluid dynamics using a CFX 10. The scale of a container crane model for wind tunnel test applied similarity scales to consider the size of the wind tunnel test section and the boundary condition for CFD is like wind tunnel test.
쐐기형 레일클램프에서 조의 회전을 방지하기 위한 적정 쐐기각에 대한 연구
한동섭,한근조,심재준,이성욱 東亞大學校 大學院 2005 大學院論文集 Vol.30 No.-
Recently many countries have concentrated their effort on the port automation, in order to be the Hub-port, that the ULCS (Ultra Large Container Ship) could come alongside the quay in their region. As the magnitude of the container ship increases, that of the container crane (used in quay) increases from 50ton-class to 61ton-class more and more. The wind velocity criteria to design the structures used in the port was upgraded from 30m/s to 40m/s due to change of the weather condition. When we design wedge type rail clamp which can protect container crane from sudden wind blast with constant clamping force regardless of the operating period, it is important to determine the angle of wedge within proper range. In this study we designed the wedge angle of the wedge-type rail clamp using the FEA.
Escherichia coli 패혈증 환자에 합병된 대칭적 하지 말단 괴사증 1예
남해성,유진홍,권순석,민준기,조현선,박민경,심병주,남유정,이지인,김진수,길욱현,조근종,신완식 대한감염학회 2005 감염과 화학요법 Vol.37 No.6
We have encountered a rare case of symmetrical peripheral gangrene complicating Escherichia coli sepsis in a 47-years-old male. He was successfully treated with antibiotics, anticoagulants, and vasodilator. To our knowledge, this is the first report on symmetrical peripheral gangrene complicating E. coli sepsis in Korea.
Lee Cheol Min,Park Jin Wook,Lee Young Geun,Kim Sung-Soo,Ryu Jae Won,Jung Seung Jae,Lee Sun Kyung 한국응용곤충학회 2014 한국응용곤충학회 학술대회논문집 Vol.2014 No.04
Urbanization is one of the leading causes of habitat loss, habitat degradation, and fragmentation. Urban development negatively affects biodiversity. This study aimed to clarify the change of butterfly communities on effect of urbanization in urban green areas. Butterfly survey was conducted using the line transect methods from April to October in 2012. A total of 59 species and 1,465 individuals of butterflies were observed in four urban green areas: Namsan Park (NS), Ewha Womans University (EW), Bukseoul Dream Forest (BD), and Hongneung Forest (HF), and natural forest: Gwangneung Forest (GF). The category of land use around study site was determined based on GIS data. Species richness and abundance of niche breadth and habitat type in urban green areas differed significantly from those in GF. Estimated species richness and species diversity (H’) in four urban green areas were significantly lower than those in GF. Species richness and abundance of forest interior species and specialist were positively correlated with paddy, field, and forest, whereas those of forest interior species and specialist were negatively correlated with urban area and road. Butterfly communities in four urban green area differed from that in GF. The result suggests that the decrease of paddy, field, and forest associated with increase of urban area and road negatively influences species composition and changes butterfly communities.
탄소중립을 위한 전기물성 · 응용부문회(C)의 전기산업발전 방향
이방욱(Lee, Bang-Wook),김강식(Kim, Kang-Sik),이세희(LEE, Se-Hee),구선근(Goo, Sun-Geun),배채윤(Bae, Chae-Yoon),이동준(Lee, Dong-Zoon),강형구(Kang, Hyoung-Ku),이찬주(Lee, Chan-Joo),이병성(Lee, Byung-Sung) 대한전기학회 2022 전기의 세계 Vol.71 No.11
대한전기학회 전기물성 · 응용부문회(C)의 탄소중립 TF에서는 탄소중립을 위한 주요 기술로 친환경/고효율 전력기기 분야와 자산관리 분야 기술을 선정하여 기술동향을 조사 · 분석하였다. 본 고에서는 해당 기술의 기술동향을 정리하고 부문회의 전문성에 기반한 핵심기술 개발방안을 제시한다.
Association Between Obesity and BRAFV600E Mutation Status in Patients with Papillary Thyroid Cancer
Lee, Jandee,Lee, Cho Rok,Ku, Cheol Ryong,Kang, Sang-Wook,Jeong, Jong Ju,Shin, Dong Yeob,Nam, Kee-Hyun,Jung, Sang Geun,Lee, Eun Jig,Chung, Woong Youn,Jo, Young Suk Springer - Society of Surgical Oncology 2015 Annals of Surgical Oncology Vol.22 No.suppl3
Unholy Trinity in Nuclear Deterrence: Three Dilemmas of Nuclear Weapons
( Geun Wook Lee ) 국방대학교 안보문제연구소 2007 The Korean Journal of Security Affairs Vol.12 No.2
Nuclear deterrence has been an issue of great policy relevance these days, but there are few works about its mechanism in the new century. This paper explores various aspects in nuclear deterrence and examines the indeterminacy in the consequences of nuclear proliferation. The first dilemma is a credibility gap, where states cannot use the nuclear weapons because they are too destructive to use for deterrence. The second is a targeting dilemma, which is the absence of the optimal target in deterrence. Civilian targets are easy but meaningless, while military targets are useful but dangerous. The last dilemma is a stability-instability paradox. Nuclear deterrence works so well that states are more likely to fight conventional wars. Choices over these dilemmas determine nuclear postures and their consequences in the real world.
LEE, SUNG-JI,LEE, JI SHIN,SHIN, MYUNG-GEUN,TANAKA, YUETSU,PARK, DONG-JIN,KIM, TAE-JONG,PARK, YONG-WOOK,LEE, SHIN-SEOK The Journal of Rheumatology 2012 The Journal of rheumatology Vol.39 No.4
<B>Objective.</B><P>To examine whether patients with Sjögren’s syndrome (SS) can be distinguished based on the expression of human T cell lymphotrophic virus type I (HTLV-1) and, if so, whether the subgroups differ in their clinical features and serological measures.</P><B>Methods.</B><P>Polymerase chain reaction (PCR) and nested PCR were used to amplify viral DNA from peripheral blood mononuclear cells (PBMC) in 53 patients with SS, using primers from the HTLV-1 pX, p19, pol, and tax regions. Minor salivary gland biopsy specimens from 33 patients with SS were examined for the presence of HTLV-1 p19 or tax proteins immunohistochemically. The sociodemographic, glandular, and extraglandular manifestations, and laboratory findings including autoantibodies, complement, and immunoglobulin levels, were analyzed.</P><B>Results.</B><P>The HTLV-1 <I>tax</I> gene was detected in PBMC samples from 2 of 53 patients (3.8%), whereas the HTLV-1 <I>pX</I>, <I>p19</I>, and <I>pol</I> genes were not expressed. As well, 100% of PBMC samples from 4 family members of patients in whom the <I>tax</I> gene was detected also expressed the <I>tax</I> gene. Immunohistochemical staining for HTLV-1 p19 and tax was seen in 10 out of 33 (30.3%) patients with SS each. Overall, 14 (42.4%) patients expressed HTLV-1 p19 or tax proteins, and they had lower rheumatoid factor and C3 levels (p = 0.015 and p = 0.005, respectively) and higher lymphocyte counts (p = 0.016). The prevalence of glandular and extraglandular manifestations did not differ between the HTLV-1-positive and negative patients.</P><B>Conclusion.</B><P>Our findings suggest that HTLV-1 in the salivary glands is involved in the pathogenesis of a subpopulation of SS, and HTLV-1-associated SS might have different immunological patterns than idiopathic SS.</P>