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- 저자 : 임성준 ( Sung-joon Lim ) (검색결과 14 건)
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임성준 ( Sung Joon Lim ),임동준 ( Dong Jun Lim ),김우재 ( Woo Jae Kim ),조태형 ( Tae Hyoung Cho ),정용구 ( Yong Gu Chung ),김세훈 ( Se Hoon Kim ),서중근 ( Jung Keun Suh ) 대한뇌종양학회·대한신경종양학회·대한소아뇌종양학회 2002 대한뇌종양학회지 Vol.1 No.1
Intracranial angiolipoma is a rare benign tumor containing mature adipose tissue admixed with a few vascular elements. Angiolipoma is mostly found in peripheral tissues and represent mesenchymal hamartomas. The authors report the case of a 58-year-old woman who presented with symptom of oculomotor nerve palsy. Computed tomography scanning revealed a well-enhanced solid mass in the sellar region which extended to left parasellar region. On MR the mass was low signal intensity on T1-weighted image and high on T2-weighted image. There were not any abnormal values in the hormonal studies. We performed operation via a left fontotemporal craniotomy. In the operative field, the tumor was a pinkish well-circumscribe mass with highly vascularity. A partial resection was performed because of profuse bleeding. In pathological examination the tumor was composed of the vascular components with intermingling adipose tissue. We should consider angiolipoma as the possible pathology when CT and MR images showed lipid signal in sellar and parasellar area even if intracranial angiolipoma is very rare which is commonly found in these regions.
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1세 미만과 1세 이상의 가와사끼병 환아에서 급성기 임상양상 및 관상동맥 변화에 대한 비교
김소영,임성준,윤신원,이동근,최응상,Kim, So Young,Lim, Seong Joon,Yun, Sin Weon,Lee, Dong Keun,Choi, Eung Sang 대한소아청소년과학회 2002 Clinical and Experimental Pediatrics (CEP) Vol.45 No.6
Purpose : To identify the necessity of more reasonable diagnostic criteria and the possibility of early prediction of coronary involvement in the higher risk group, we investigated and compared clinical and laboratory findings in the acute phase and coronary involvements in those younger (n=17) and older(n=53) than one year of age in Kawasaki disease(KD). Methods : Retrospective chart reviews were performed on 70 patients with KD who were admitted to the Chung-Ang University Hospital from April 1997 to May 2001. Results : Male were significantly higher in the younger age group(M : F ratio 3.3 : 1 vs. 1.0 : 1, P=0.004). Fever durations before intravenous immunoglobulin(IVIG) and echocardiography were significantly shorter in the younger group($4.6{\pm}1.3$ vs. $6.2{\pm}2.5$, P=0.004 vs. 0.01, respectively). Cases meeting typical diagnostic criteria were significantly less in the younger group(P=0.006). In the laboratory findings, serum albumin, BUN and $K^+$ levels in the acute febrile phase were significantly higher in the younger group(P=0.002, 0.006, <0.001, respectively) and incidences of coronary artery dilatation in the acute phase were significantly higher in the younger group(P=0.01). Conclusion : Although less met the typical diagnostic criteria of KD, infants younger than one year of age are more susceptible to coronary artery change in the acute febrile phase. Therefore, KD should be entertained as a diagnostic possibility in young infants with prolonged fever without distinct fever focus, and echocardiography should be considered as part of the evaluation of these patients, and then early diagnosis and prompt IVIG should be conducted.
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근거리에서의 2차원 전계 집속 평판 렌즈 설계 및 해석
김영국,임성준,Kim, Young-Guk,Lim, Sung-Joon 한국군사과학기술학회 2011 한국군사과학기술학회지 Vol.14 No.6
Since J.B.Pendry proposed the concept of "perfect lens" there have been many researches which focus electric fields. However they used 1 dimensional lens. In contrast, this paper suggests 2 dimensional lens calculated from angular-spectrum method. 2-dimensional focusing is achieved in nearfield. This result implies that the proposed lens can be used for wireless power transfer, imaging system, and sensing systems.
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이용배,임성준,Lee, Yong-Bae,Lim, Sung-Joon 한국정보교육학회 2007 정보교육학회논문지 Vol.11 No.4
최근 UCC(User-created content)는 연예, 스포츠 등의 분야에서 많이 생성되어 공유되고 있지만 그 생명주기(life cycle)는 매우 짧고 이를 교육이나 학습에 활용하는 경우는 거의 드문 상황이다. 따라서 본 연구에서는 UCC 중에서 특히 창작 동영상을 활용하여 원격 교육에 적용하는 방법을 제안한다. 교사는 자신이 제작한 동영상을 원격 교육 시스템에 탑재하여 학생들로 하여금 자기 주도적 학습을 할 수 있도록 지원하며 학생들은 직접 만든 동영상으로 교사에게 지속적인 피드백을 받고 최종 평가를 받는다. 본 연구에서는 모형으로 원격 교육 시스템을 구현하고 초등학교 특기 계발교육 중 단소 실기 과목을 선정하여 원격 교육을 수행하였다. 원격 교육 후의 설문에서 학생들은 우선 단소 실기 능력이 향상되고 학습 및 평가 방법에 만족하는 것으로 나타났으며 단소 실기 능력 향상 이외에도 카메라/캠코더 조작기술 및 컴퓨터 활용 능력이 향상되었다고 응답하였다. 또한 동영상을 친구들 혹은 부모님과 함께 제작하고 많은 시간을 함께 보내면서 대부분의 학생들이 이전보다 관계가 더 좋아진 것으로 나타났다. These days UCC(User-created content) is being made and shared increasingly in entertainment and sports area, but its life cycle seems to be very short and the cases that it is used for an education or a learning purposes are not common yet. In this study a new methodology is suggested for adapting a UCC to a distance education. A teacher upload the movie that he or she made for the distance education system, so the students can carry out the self-centered learning procedure. After that, the students send their own movie files to the teacher, and get a feedback from the teacher as a evaluation of the course. In this study a distance education system was established as a prototype, and a short bamboo flute class was chosen for this study from the specialty developmental education program of the elementary school. According to the result of the questionnaire the students thought that their performance skill was improved a lot and they were satisfied with the learning program and the method of evaluation. They also answered that their skills dealing with a camera, a camcorder and a computer got much better. Moreover, most of the students thought that the relationships with their friends and their parents got better also because they spent lots of time together making and watching the movie files for this education program.
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스테로이드에 반응을 보인 신증후군 환아에서 재발 예측인자로서 고지혈증의 중요성
정순필,홍순철,임성준,임인석,최응상,Jung, Soon-Pil,Hong, Soon-Cheul,Lim, Seong-Joon,Lim, In-Seok,Choi, Eung-Sang 대한소아신장학회 2001 Childhood kidney diseases Vol.5 No.2
Purpose : One of the most difficult problems in the care of children with nephrotic syndrome remains the occurrence of relapses, despite initial response to steroids. Constantinescu reported that rapidity of initial response to steroid therapy could predict fewer relapses in the first year. So we evaluated the changes in serum lipid abnormalities in children with corticosensitive nephrotic syndrome before steroid treatment and the correlation between serum lipid levels and renal function, days to remission. Methods . We analyzed the Medical records of children who were managed by us between October 1994 and August 2000. In 33 patients with corticosensitive nephrotic syndrome, we evaluated the correlation between serum lipid levels and renal function [Creatinine clearance(Ccr)] and proteinuria before steroid treatment, and days to remission defined as the third day when the patient's urine becomes protein free. Results : There were 21 males and 12 females. Median age at presentation was 6.4 years (range: 1.8-17.3 years). Median days to remission were 15.4 days (range 4-42 days) on Prednisolone $60mg/m^2$ daily. The increased levels of triglyceride, total cholesterol, LDL cholesterol, apolipoprotein B, total cholesterol/HDL cholesterol, Lipoprotein(a) were observed. But the level of HDL cholesterol was not increased. Serum albumin was decreased a]id proteinuria was increased before steroid treatment. But Ccr was not decreased. There were negative correlation between serum albumin and total cholesterol (r = -0.5157, P<0.005), LDL cholesterol (r = -0.5543, P<0.005), total cholesterol/HDL cholesterol (r = -0.4506, P<0.01), lipoprotein(a) (r = -0.4570, P<0.025), apolipoprotein B (r = -0.5297, P<0.025), apolipoprotein B/apolipoprotein Al (r = -0.5851, P<0.01), apolipoprotein B/HDL cholesterol (r = -0.4961, P<0.05) before steroid treatment. There was no correlation between proteinuria and serum lipid profiles. Also Ccr and serum lipid profiles were not correlated. There was positive correlation between days to remission and HDL cholesterol (r = +0.4511, P<0.05), apolipoprotein B (r = +0.5190, P<0.05), apolipoprotein B/HDL cholesterol (r = +0.7169, P<0.005). Conclusions : This results reveal that HDL cholesterol, apolipoprotein B and apolipoprotein B/HDL cholesterol can be used as a predictive factor in corticosensitive nephrotic syndrome. We could not determine the significant level of these lipids for insufficient patients number, but these level may predict future relapses of corticosensitive nephrotic syndrome patients and thus may allow to better management and treatment protocols. More data and long term follow up studies should be needed. (J Korean Soc Pediatr Nephrol 2001;5 : 136-46)
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박우영(Woo-Young Park),임성준(Sung-Joon Lim) 대한전기학회 2009 전기학회논문지 Vol.58 No.11
In this paper, a homogeneous dual composite right/left-handed (D-CRLH) transmission line (TL) is proposed by using a defected ground structure (DGS) on the ground plane. In order to satisfy a homogeneity condition of metamaterial, a subwavelength unit cell is designed by way of a spiral DGS and a meander stub. From a dispersion diagram, it is expected that the frequency bands for the left-handed (LH) property is 3.5 - 4.4 ㎓. At 3.8 ㎓ in the LH band, backward propagating phenomenon is observed from full-wave analysis. The experimental results show that the proposed TL has a stop-band in 1.75 - 3.6 ㎓.
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정혜정 ( Hye-jung Jung ),임성준 ( Sung-joon Lim ),정영은 ( Yung-eun Jung ),신석규 ( Seok-kyoo Shin ) 한국정보처리학회 2006 한국정보처리학회 학술대회논문집 Vol.13 No.2
소프트웨어의 품질 특성은 크게 6가지로 나누어 평가되어지고 있다. 기능성, 신뢰성, 사용성, 효율성, 유지보수성, 이식성의 품질 특성중에서 신뢰성에 대한 평가가 상당히 중요하다는 인식을 받고 있다. 본 연구에서는 소프트웨어 신뢰성에 대한 평가 방법을 제시하고 소프트웨어를 시험하는 기관이나 소프트웨어 개발업체에서 적용할 수 있는 소프트웨어 신뢰성 평가 방법론에 대해서 연구하고 고장데이터를 적용하여 소프트웨어 신뢰성을 평가하는 평가 결과를 제시하였다.
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