근전도 생리 분석을 이용한 상용차용 전자페달의 평가

김재준(Jae-Jun Kim),김경(Kyung Kim),신선혜(Sun-Hye Shin),유창호(Chang-Ho Yu),정구영(Gu-Young Jeong),오승용(Seung-Yong Oh),권대규(Tae-Kyu Kwon) Korean Society for Precision Engineering 2011 한국정밀공학회지 Vol.28 No.12

In this paper, we assessed muscular activities of lower limbs and foot pressure for car and bus drivers according to operating three electronic pedals that we developed. To analyze drivers’ physical exhaustion, muscular fatigue of lower limbs was evaluated. Eleven car drivers and six urban bus drivers were participated in this experiment. The virtual driving system was used for the real driving environment. The virtual driving system was comprised of a spring seat, a steering wheel, pedals (clutch, excel and brake pedals), a manual transmission and a virtual driving simulation. For the real vibration like situation on the road, six degree of freedom motion base system was used. Measured muscles were rectus femoris (RF), biceps femoris (BF), tibialis anterior (TA) and gastrocnemius (Gn) muscles. For the quantitative muscular activities, integrated electromyography (IEMG) was analyzed. Muscular fatigues also were analyzed through the analysis of the median frequency. In addition, foot pressures were analyzed and compared through the peak and averaged pressure during the operating three developed electronic pedals. The experiments are conducted with total 17 drivers, 11 general public and 6 drivers. As a result of the analysis, electromyogram and fatigue analysis through intermediate frequency reduction for pedal-1 more efficient than other pedals. And foot pressure also was decreased. Consequently, we suggested the most efficient pedal and method to minimize the amount of cumulative fatigue.

Endymion의 주제로서 순진성의 상실과 그 의미

김재준 ( Jae Jun Kim ) 21세기영어영문학회 1990 영어영문학21 Vol.7 No.-

다발성 동시성 조기위암에 대한 임상적 고찰

김회진 ( Hoi Jin Kim ),이준행 ( Jun Haeng Lee ),이준상 ( June Sang Lee ),문태건 ( Tae Gun Moon ),김재준 ( Jae J. Kim ),이종철 ( Jong Chul Rhee ),노재형 ( Jae Hyung Noh ),손태성 ( Tae Sung Sohn ),김성 ( Sung Kim ) 대한내과학회 2007 대한내과학회지 Vol.72 No.4

목적: 조기위암에 대한 치료로 제한적 위 절제술과 내시경적 점막 절제술의 발전과 함께 재발의 원인 중 하나로 알려진 다발성 동시성 조기위암에 대한 이해가 중요해지고 있다. 본 연구에서는 다발성 동시성 조기위암의 임상적, 병리학적 특성과 수술 전 진단되지 못했던 동시성 병변들의 특징을 알아보고자 하였다. 방법: 2004년 1월부터 12월까지 삼성서울병원에서 조기위암으로 수술한 496예들을 수술 후 조직 검사 결과에 따라 단일 조기위암과 다발성 동시성 조기위암 두 군으로 나누어 임상적, 병리학적 특성을 다발성 조기위암을 중심으로 비교 분석하였고, 수술 전 검사에서 발견하지 못했던 병변들의 특징을 분석하였다. 결과: 다발성 동시성 조기위암은 24예(4.8%)에서 발생하였고, 총 24개의 주병변과 27개의 부병변이 발견되었다. 다발성 동시성 조기위암은 남성에서 호발하였다(p=0.03). 림프절 전이의 빈도를 포함한 다른 임상적, 병리적 특성들은 단일 조기위암과 비교하여 차이가 없었다. 24명 중 6명(25%)의 환자에서 27개의 부병변 중에서 6개(25%)의 동시성 병변을 수술 전에 발견하지 못하였다. 육안적으로 5개의 병변이 평탄형이었고, 1개의 병변이 함몰형이었다. 5개의 병변은 위의 하부와 중부의 전벽과 후벽에 위치하였고, 1개는 상부의 소만측에 위치하였다. 병변의 크기는 직경이 4 mm인 병변이 2개, 8 mm인 병변이 1개, 12 mm인 병변이 2개가 있었고, 15 mm인 것이 1개 있었고, 평균 직경은 9.1 mm이었다. 병리학적 소견은 4개가 분화형 암, 2개가 미분화형 암으로 모두 점막에 국한된 병변이었다. 결론: 다발성 동시성 조기위암은 단일 조기위암과 비교하여 남성에서 호발하는 것 외에는 동일한 임상적, 병리적 소견을 보였다. 조기위암의 진료 시에는 다발성 병변의 가능성을 고려하여 주병변과 같거나 인접한 부위의 전벽 및 후벽과 소만부를 포함한 위 전체에 대한 세심한 검사가 필요하다. Background: With the progress of limited surgery and endoscopic treatment for early gastric cancer (EGC), multiple synchronous EGCs, a cause of recurrence, become more important. The objective of this study was to elucidate the characteristics of multiple synchronous EGCs with an emphasis on features of preoperatively undiagnosed lesions. Methods: We retrospectively reviewed medical records of 496 patients who underwent a gastrectomy for EGC at our institution between January 2004 and December 2004. Results: Twenty-four patients (4.8%) had multiple synchronous EGCs with 24 main and 27 accessory lesions. Multiple synchronous EGCs showed male predominance (p=0.03). Other characteristics including lymph node metastasis were the same as with single EGC. Out of 27 accessory lesions, six lesions (22%) were not detected preoperatively in six patients (25%). Macroscopically five lesions were flat and one lesion was depressed. Five lesions were located at the anterior or posterior wall of the middle and low third portion and one lesion was located at the lesser curvature side of the upper third portion of the stomach. Two lesions were 4 mm, one lesion was 8 mm, two lesions were 12 mm and one lesion was 15 mm in size (mean diameter = 9.1 mm). Histologically, four lesions were of the differentiated type and two lesions were of the undifferentiated type. Conclusions: Multiple synchronous EGCs have same clinicopathologic features as a single EGC except for male predominance. Considering the possibility of a synchronous lesion, one should examine the entire stomach precisely with special attention to the anterior, posterior wall and lesser curvature side of the same or neighboring area of a known EGC lesion before treatment. (Korean J Med 72:360-367, 2007)

Trinitrobenzene Sulfonic Acid에 의해 유발된 백서의 대장염에서 항염증제제의 치료효과

김재준(Jae Jun Kim),류지곤(Ji Kon Ryu),이동호(Dong Ho Lee),송인성(In Sung Song),김정룡(Chung Yong Kim),김용일(Yong Il Kim) 대한소화기학회 1996 대한소화기학회지 Vol.28 No.2

N/A Background/Aims: The causes and pathogenesis of inflammatory bowel disease remain unknown and no definite therapy exists until now. In order to clarify the effect of Artemisia capillaris, colitis was induced by trinitrobenzene sulfonic acid(TNBS) in rats, and the effect of anti-inflammatory drugs and Artemisia capillaris was compared. Methods: Wel]-grown Sprague-Dawley rats were divided into 7 groups and colitis was induced by TNBS except the control group. Each group was treated with 1% methyl ce]lulose, prednisolone l mg/kg, sulfasalazine 100 mg/kg, prednisolone and sulfasalazine, A.capillaris 1 mg/kg and 10 mg/kg per oral route from the next day. After 2 weeks, rats were sacrificed and gross morphologic features of colons were examined. Resullts: Ulceration, adhesion, thickening and dilatation were noticed in the colonic mucosa after TNHS insti]lation. Adhesion, thickening and di]atation were significantly improved in all the treated groups, but the ulceration was significantly improved only in groups treated by prednisolone and A.capillaris 10mg/kg. Conclusions: The colitis induced by TNBS is sirnilar to the human inflammatory bowel disease and the prednisolone and A.capillaris have a healing effect on rat colitis induced by TNBS. (Korean J Gastroenterol 1996; 2S:224 - 231)

Wireless EV 배터리 충전용 공진형 ZVZCS 벅 컨버터

김재준(Jae Joon Kim),전준혁(Joon Hyeok Jeon),경신수(Sin Su Kyoung),박지수(Ji Soo Park),이은수(Eun Soo Lee) 전력전자학회 2023 전력전자학술대회 논문집 Vol.2023 No.7

세이머스 히니의 「겨울나기」에서 언어와 정치

김재준 ( Jae Joon Kim ) 21세기영어영문학회 2000 영어영문학21 Vol.16 No.-

시적 담론의 탈 중심화-셰이머스 히니의 『현장답사』

김재준 ( Jae Joon Kim ) 21세기영어영문학회 2011 영어영문학21 Vol.24 No.1

Seamus Heaney`s Field Work, as the title implies, is excavatory. "Vowels ploughed into other: opened ground", the first line of the first sonnet of "Glanmore Sonnets", Which seems to be intentionally placed in the center of this collection, is suggestive of Heaney`s changed poetic consciousness in the many poems of Field Work, which was published after the announcement of his independence as a artist from the troubles of the Northern Ireland. His poetic consciousness removed from the narrow range of the poetic land and ploughed into new, various, other, opened ground. The dominant and important change of heaney`s poetic self in Field Work is from the mythologized and monologic of North to the social and dialogic. The poetic discourse created by the conversational and opened poetic self of Field Work is not stayed by the speaker`s utterance but various voices enter into dialogue with the speaker and become viable participants in the text. Although Haney creates the texts, he attempts to wield no authority in them. Heaney`s speaker is distinguished from ones in other collections before Field Work by his autonomy to evade, or confront, address, explore, and recollect the many other autonomous voices in the text. The discourses fluctuate because the speaker who is always in conversation with himself or others often makes discursive shifts which reveal his artistic consciousness. The on-going drama of diverse voices including silences operating in the poems of Field Work make the end of the poems unbalanced, indeterminate, and opened.

From Eco to Eco: 식물건강 모니터링을 위한 에코 소재 및 기술

김재준(Jae Joon Kim) 한국고분자학회 2023 한국고분자학회 학술대회 연구논문 초록집 Vol.48 No.2

시설물 안전점검 작업 맞춤형 안전화 개발

김재준 ( Kim Jae-jun ),윤준웅 ( Youn Jun-ung ),조준일 ( Cho Joon-il ) 한국구조물진단유지관리공학회 2023 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.27 No.1

시설안전 산업현장은 비계 및 작업발판이 설치되지 않은 경사면을 통한 이동과 점검이 잦고, 중량물 낙하 충격위험은 상대적으로 적은 등 건설현장과는 다른 현장환경 및 작업 특성을 갖는다. 현재 시설안전 산업현장에서는 일반적으로 경작업용 안전화를 착용하고 있으나, 경작업용 안전화의 경우에도 선심 및 내답판의 부착으로 인한 유연성 부족과 무게 증가 등으로 작업자에게 피로감을 주고 사고유발 우려가 있어 개선이 필요하다는 의견이 개진되어 왔다. 시설안전 산업현장에 보다 적합한 안전화 개발을 위하여 개선사항을 조사하고 이를 반영한 시제품을 개발하여 사용자 피드백을 통한 개선효과를 분석하였다.

디지털 고주파 기억장치 설계

김재준(Kim jae-jun),이종필(Lee Jong-Pil),최창민(Choi chang-min),임중수(Lim joong-soo) 한국콘텐츠학회 2004 한국콘텐츠학회 종합학술대회 논문집 Vol.2 No.1

디지털 신호 기억회로는 반도체 기술의 발달과 더불어 매우 빠른 속도로 발달되었다. 그러나 수 백 ㎒의 높은 고주파 신호를 저장하였다가 복재하는 것은 매우 어려운 기술이다. 고주파 신호의 기억을 위해서 과거에는 아날로그 방식의 주파수 기역루프 (Frequency Memory Loop)가 사용되었으나, 광대역 신호 변환기와 광대역 주파수 증폭기 등이 개발 되면서 디지털 고주파 신호 기억 장치에 대한 설계가 가능해 졌다. 본 논문에서는 주파수 대역이 3 옥타브 이상 되는 광대역 디지털 고주파 기억회로를 Johnson 코드를 이용하여 설계하고 그 결과를 모사하였다. Digital memory circuits have been developed very fast according to the progress of semiconductor technology. But It was very difficult to memorize a high frequency radio signal. Many years ago an analog loop was used for store of radio frequency signal, and the digital radio frequency memory was made to the development of wideband amplifier and high speed sampler. We present a design of wide-band DRFM using Johnson code and the simulation results with respect to the sampling speed. in this paper.