• 대순사상논총
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• 제47집
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• pp.241-279
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• 2023

『만법전(萬法典)』은 1986년에 처음으로 간행되었고, 1994년과 1995년에도 재간행되어 정체를 알기가 어려운 신비한 내용을 지닌 수련서 혹은 불교 계통의 서적으로 널리 알려져 왔다. 이제 『만법전』의 내용을 분석함으로써 증산교단(甑山敎壇)의 한 파인 서백일(徐白一)의 용화교(龍華敎)에서 간행한 책으로 밝혀졌다. 따라서 『만법전』에 실린 여러가사는 '증산교가사'로 규정할 수 있다. 『만법전』에 실린 가사에는 천지공사(天地公事), 의통(醫統), 도수(度數), 서신(西神), 천존(天尊), 지존(地尊), 인존(人尊), 치천하오십년(治天下五十年), 해원시대(解冤時代) 등 증산교단에서 고유하게 사용하는 용어들이 많이 언급되었고, 증산의 탄생장소, 탄생 시점, 성씨, 생존기간 등이 읊어져 있다. 그리고 증산이 했다고 전하는 말을 그대로 인용하여 노래하였고, 오선위기(五仙圍碁), 상씨름, 생장염장(生長斂藏), 언청신(言聽神), 기초동량(基礎棟樑), 해인(海印), 상계신(上計神) 등의 증산 고유의 용어에 대해서도 읊고 있다. 특히 증산이 제자들에게 외워준 한시(漢詩)의 일부 구절이 그대로 인용되고 있다. 한편 『만법전』에는 불교적 구원관도 확인이 가능한데, 특히 미륵신앙(彌勒信仰)을 중점적으로 노래하였다. 그런데 『만법전』은 전통적인 불교의 미륵신앙과는 다르게 미륵불의 기운과 능력을 지닌 특정한 인물의 탄생을 예고하고 강조하는 경향이 있다. 미륵세존(彌勒世尊)과 용화회상(龍華會上)을 강조하면서도 전북에 있는 모악산(母岳山) 금산사(金山寺)를 특별하게 읊고 있어서 금산사를 중심으로 한 증산이 바로 미륵불로 오셨다는 증산교인들의 믿음을 긍정적으로 노래한다. 나아가 『만법전』에는 용화교(龍華敎)의 교주인 서백일(徐白一)의 탄생일, 탄생장소, 수감년도, 출옥 시기, 호(號) 등이 언급되어 있어서 이미 세상을 떠난 증산을 대신해서 이 세상에 나온 구원의 절대자가 바로 서백일이라고 은근히 주장하고 있다.

• 생명과학회지
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• 제34권5호
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• pp.313-319
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• 2024

검정종피와 녹색자엽을 가진 콩 품종이나 유전자원은 눈의 피로 등 시신경 보호와 눈 질환 예방에 도움을 줄 수 있는 루테인 성분과 인체 내 활성산소 제거, 콜레스테롤 저하, 항산화 및 항암 작용, 면역증강, 노화 방지 등의 작용을 하는 안토시아닌 성분을 풍부하게 함유하고 있다. 그러나, 성숙 종자에는 알러지 유발 및 품질을 저하시키는 P34, 7S α' subunit 및 렉틴 단백질도 포함되어 있다. 따라서, 본 연구는 P34, 7S α' subunit 및 렉틴의 3가지 단백질이 부재하면서 검정종피와 녹색자엽을 가진 콩 계통을 개발하기 위하여 진행되었다. 갈색종피와 녹색자엽을 가지면서 7S α' subunit 및 렉틴 단백질이 부재한 모본과 검정종피와 녹색자엽을 가지면서 P34 및 렉틴 단백질이 부재한 부본과의 교배로 검정종피와 녹색자엽을 가진 157개의 F₂ 종자가 선발되었다. P34 및 7S α' subunit 단백질의 존재와 부재는 각각 3:1로 관찰되었고, 두 단백질 간에는 9:3:3:1의 분리비와 일치하여 서로 독립적임을 나타내었다. 두 단백질에 대하여 모두 열성(cgy1cgy1p34p34)을 보인 14개의 F₂ 종자로부터 형질이 양호하면서 P34, 7S α' subunit 및 렉틴 단백질이 모두 없고 검정종피와 녹색자엽을 가진 한 개의 개체가 선발되었다. 선발 개체의 F₃ 종자를 이용하여 3가지 단백질의 부재에 대한 유전적 고정이 확인되었다. 온실에서 6월 14일 파종 시 선발 개체의 성숙일은 10월 3일, 경장은 약 68 cm였고 백립중은 26.5 g 정도였다. 선발 개체는 항영양성분이 부재하면서 녹색자엽을 가진 유색콩 품종 육성을 위한 모본으로 이용될 수 있을 것으로 보인다.

• 동아시아식생활학회지
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• 제19권6호
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• pp.856-868
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• 2009

본 연구는 서울 지역에 거주하는 일부 여대생을 대상으로 식생활 평가를 기준으로 두 그룹으로 분류하여 식생활 습관, 신체 발달, 건강습관 및 혈액 인자를 비교하여 건강상 문제를 일으킬 수 있는 원인을 찾아내어 문제점을 해결할 수 있는 방안을 제시하고자 실시하였다. 전체 조사 대상자의 신장과 체중의 평균값은 각각 $162.02{\pm}4.89\;cm$과 $53.96{\pm}7.00\;kg$으로 조사되었다. 여대생의 식생활을 진단하기 위해 3점 척도로 살펴 본 결과, 전체 여대생의 식생활 진단 성적(1~10항목)은 평균 21.2점이었다. 평소 식사시간이 규칙적인 전체 여대생은 67.6%였으며, 아침식사를 매일 하는 여대생이 전체 중 30.5%에 불과하였으며, 주 중 최소한 한 번 이상은 결식하였다. 아침식사를 거르는 이유로는 '아침시간이 바쁘거나'(60.8%), '늦게 일어나서'(23.0%) 아침을 거르는 경우가 응답자의 83.8%나 되었다. 83.5%의 여대생은 가끔 또는 자주 과식을 하는 것으로 조사되었으며, 외식시 한식을 선호하였다. 여대생이 하루에 주로 1~2회 간식을 하였으며, 편식을 '자주 한다.'는 비율은 40.4%나 되었다. Good group에서는 간식으로 빵류 및 감자(39.3%), 탄산음료 및 빙과류(36.8%)를 섭취하였으며, Poor group에서는 우유 및 유제품(38.0%), 패스트푸드 및 튀김식품(22.8%)을 간식으로 섭취하였다. 전체 조사 대상자의 열량 섭취량은 $2,332.87{\pm}747.91\;kcal$로 한국인 영양 섭취 기준 중 20~29세 여성의 열량 필요 추정량으로 제시된 2,100 kcal보다 높게 섭취하는 것으로 조사되었으며, 열량, 지방, 비타민 $B_2$, $B_6$, niacin, 엽산, 칼슘, 철, 아연, 인 등의 영양소 섭취는 식생활 평가 점수가 평균 이하로 낮은 그룹에서 높게 섭취하는 것으로 조사되었다. 혈중 적혈구수의 경우 4.49~4.55(${\times}10^6/{\mu}L$)로 군 간에 유의한 차이는 보이지 않았으며, 전체 조사 대상자의 혈중 백혈구 수치는 $6.40{\pm}1.52({\times}10^3/{\mu}L$)이었다. 헤모글로빈 수치도 $13.77{\pm}1.00\;g/dL$로 정상 범위에 속하였으나 헤모글로빈 농도가 12 g/dL 이하인 여대생은 6.4%였으며, 기준치 11.1 g/dL로 제한하면 약 2.7%의 여대생만이 빈혈이었다. 그러나 hematocrit 함량이 33%를 cut-off point로 했을 때는 빈혈로 판정되는 여대생이 없었다. 총콜레스테롤 수치가 200 mg/dL 이상인 여대생은 23.9%로 조사되었으며, 중성지방, HDL-cholesterol, LDL-cholesterol는 군 간에 유의한 차이가 없었다. 건강에 대한 관심도는 식생활 평가가 평균 이하로 낮은 그룹에서 24.5%로 높았으며, 오히려 식생활 평가가 높은 그룹에서는 49.6%의 여대생이 건강에 대한 관심이 없는 것으로 조사되었다. 건강을 유지하기 가장 중요한 부분으로는 규칙적인 식사와 영양 섭취, 충분한 휴식과 수면이 중요하다고 답하였다. 여대생의 경우 평균 수면 시간은 6~8시간이 가장 많았으며, 운동의 여부를 묻는 질문에는 식생활 평가가 평균 이하로 낮은 그룹에서 운동을 한다고 답한 여대생이 36.2%로 식생활 평가가 평균 이상으로 좋은 그룹의 여대생들(18.5%)에 비해 유의하게 높았다(p<0.05). 따라서 본 연구에서 전체적인 여대생의 식생활의 문제점으로는 아침식사의 결식, 과식과 편식하는 습관, 영양소의 불균형적인 섭취 및 운동의 부족 등이 문제시 되었으며, 식생활 평가가 평균 이하로 낮은 그룹에서는 간식으로 지방을 많이 함유한 패스트푸드나 튀김식품 등의 섭취 및 열량위주의 식사가 많은 것으로 조사되었다. 또한 식생활 평가가 평균 이상으로 좋은 그룹의 여대생들의 가장 큰 문제점은 간식으로 탄산음료 및 빙과류의 섭취가 높으며, 과일 섭취의 부족 및 운동 부족으로 자신의 건강을 소홀히 생각하고 있다는 점이었다. 이러한 문제를 해결하기 위해서는 자신의 건강상태를 바르게 판단하여 자신에게 맞는 현실적으로 실천 가능한 식생활 계획을 세우는 것이 필요하며, 대학에서 영양과 건강에 관한 수업의 실시 및 대중화함으로써 영양교육의 강화가 필요한 것으로 사료된다. 또한 지역사회 구성원 및 가족과 함께 실천할 수 있는 식사 관리 프로그램을 마련하는 것도 좋은 방법 중의 하나라고 사료된다.

• 농촌의학ㆍ지역보건
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• 제23권2호
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• pp.157-174
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• 1998

인구사회학적 변수가 건강생활양식 실천도와 건강증진관련 행위의 실천율에 미치는 영향을 파악하기 위하여 1993년 6월 1일부터 2개월간 경주시에 거주하는 주민 1,903명을 대상으로 사전에 훈련된 조사원이 가구방문을 통하여 면접조사표에 의거 직접 면접식 설문조사를 실시하였다. 설문조사 내용은 인구학적 및 사회경제적 특성, 상병 및 의료이용양상, 그리고 건강증진과 관련된 행위(남자 24개, 여자 26개 항목)이었다. 조사대상자의 사회인구학적 특성별로 건강생활양식 실천도가 높은 경우한 남자의 고연령군, 유배우 기혼자와 사별한 자, 종교거 없는 사람, 아파트 및 연립주택 거주자, 남자의 저소득층과 여자의 고소득층, 공무원 및 사립학교 교직원 의료보험 가입자, 고학력자, 전문관리직 종사자, 만성질환 이환자 및 처체증자 등이었다. 건강증진 관련행위의 실천율에 있어 남자는 흡연, 음주, 청량음료음용, 육류섭취, 식염섭취 및 건강 진단율이 여자에 비해서 높았으며 여자는 과일 채소섭취율, 양치질수행률 및 우유음용률이 남자보다 높았다. 연령이 증가할수록 실천율이 높아지는 건강증진 관련행태로는 과일 채소섭취, 규칙적 식사, 아침식사, 식염섭취, 의사방문, 혈압측정 및 단골의사 보유였으며, 연령이 증가할수록 실천율이 낮아지는 것으로는 안전벨트착용, 양치질수행, 커피음용, 차음용, 청량음료음용, 우유음용 및 간염예방 접종이었다. 월평균 가구소득이 증가할수록 실천율이 높아지는 건강관련 행태로는 규칙적인 운동, 안전벨트 착용, 양치질수행, 커피음용, 차음용, 우유음용, 과일 채소섭취, 육류섭취, 건강진단, 간염예방접종 및 자궁암 검진이었으며, 반대로 소득이 낮을수록 실천율이 높은 것으로는 흡연을, 규칙적인 식사, 아침식사 및 유방암자가검진이었다. 생산직 및 농 어 축산업에 종사하는 사람은 다른 작업군에 비해 흡연율, 음주율, 의사방문율 및 단골의사 보유율이 높았고 안전벨트착용률, 양치질수행률 및 간염예방접종률은 낮았다. 판매 서비스직종의 경우는 커피음용률, 육류섭취율, 식염섭취율, 자궁암 검진율이 다른 직업군에 비해 높았던 반면, 충분한 수면을, 규칙적인 식사율, 아침식사율, 혈압측정률, 건강진단율은 낮았다. 사무직 및 전문 관리직이 다른 직업군에 비해 규칙적인 운동, 맨손체조, 안전벨트착용, 양치질수행, 차음용, 청량음료음용, 우유음용, 혈압측정, 건강진단, 간염예방접종 실천율은 높았으며, 식염섭취율과 자궁암 검진율은 낮았다. 교육수준이 높을수록 규칙적인 운동, 맨손체조, 안전벨트착용, 양치질수행, 커피음용, 차음용, 우유음용, 육류섭취, 간염예방접종 및 보조제 복용행위의 실천율이 높았으며, 음주율, 아침식사율 및 식염섭취율은 낮았다. 초졸 이하 군에서는 흡연율, 규칙적인 식사율, 의사방문율, 혈압측정률 및 단골 의사보유율이 높았다. 만성질환에 이환된 사람은 흡연, 음주, 규칙적인 운동, 맨손체조, 규칙적인 식사, 아침식사, 육류 섭취, 식염섭취, 의사방문, 혈압측정, 건강진단, 단골의사보유, 보조제 복용 등의 실천율이 높았으며, 만성질환에 이환되지 않은 사람은 안전벨트착용, 양치질수행, 충분한 수면, 커피음용, 차음용, 청량음료음용, 우유음용, 과일 채소섭취율, 간염예방접종, 자궁암 검진, 유방암 자가검진 등의 실천율이 높았다. 정상체중군에서는 흡연, 음주, 안전벨트착용 등의 실천율이 높았고, 과체중군에서는 규칙적인 운동, 맨손체조, 육류섭취, 식염섭취, 혈압측정, 건강진단, 단골의사보유율이 높았으며, 저체중군에서는 양치질수행, 우유음용, 보조제 복용률이 높았다. 결론적으로 인구사회학적 특성에 따라 건강생활양식 실천도와 건강증진 관련행위의 실천양상이 다양하게 나타났다. 따라서 건강증진 프로그램에 주민의 참여를 촉진시키고 건강관련행위의 실천을 권장하는 전략으로는 주민의 사회경제적인 특성을 고려한 건강증진 프로그램이 전개되어야 한다.

• 지능정보연구
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• 제18권2호
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• pp.29-45
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• 2012

회사채 신용등급은 투자자의 입장에서는 수익률 결정의 중요한 요소이며 기업의 입장에서는 자본비용 및 기업 가치와 관련된 중요한 재무의사결정사항으로 정교한 신용등급 예측 모형의 개발은 재무 및 회계 분야에서 오랫동안 전통적인 연구 주제가 되어왔다. 그러나, 회사채 신용등급 예측 모형의 성과와 관련된 가장 중요한 문제는 등급별 데이터의 불균형 문제이다. 예측 문제에 있어서 데이터 불균형(Data imbalance) 은 사용되는 표본이 특정 범주에 편중되었을 때 나타난다. 데이터 불균형이 심화됨에 따라 범주 사이의 분류경계영역이 왜곡되므로 분류자의 학습성과가 저하되게 된다. 본 연구에서는 데이터 불균형 문제가 존재하는 다분류 문제를 효과적으로 해결하기 위한 다분류 기하평균 부스팅 기법 (Multiclass Geometric Mean-based Boosting MGM-Boost)을 제안하고자 한다. MGM-Boost 알고리즘은 부스팅 알고리즘에 기하평균 개념을 도입한 것으로 오분류된 표본에 대한 학습을 강화할 수 있으며 불균형 분포를 보이는 각 범주의 예측정확도를 동시에 고려한 학습이 가능하다는 장점이 있다. 회사채 신용등급 예측문제를 활용하여 MGM-Boost의 성과를 검증한 결과 SVM 및 AdaBoost 기법과 비교하여 통계적으로 유의적인 성과개선 효과를 보여주었으며 데이터 불균형 하에서도 벤치마킹 모형과 비교하여 견고한 학습성과를 나타냈다.

• 한국축산식품학회지
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• 제27권4호
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• pp.392-400
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• 2007

본 연구는 호맥 사일리지의 급여와 급여기간이 비육돈의 생산성, 혈액성상 및 도체특성에 미치는 영향에 대하여 알아보기 위하여 시험을 실시하였다. 3원 교잡종($Landrace{\times}Yorkshire{\times}Duroc$) 비육돈 16두를 공시하였으며 시험 개시시 체중이 90.26 kg이었고 30일간 개체별 사양시험을 실시하였다. 시험설계는 호맥 사일리지의 급여기간에 따라 출하 전 10일간 급여한 처리구(S10), 20일간 급여한 처리구(S20), 30일간 급여한 처리구(S30)로 4처리를 하여 처리당 4반복, 반복당 1마리씩 $1.8{\times}1.8\;m$ 크기의 돈방에 개별 사육하였다. 사양시험 기간 동안 일당증체량 및 사료효율은 처리구간 유의적인 차이가 없었고(p>0.05), 사료섭취량은 대조구가 다른 처리구와 비교하여 높게 나타났다(p<0.05). 영양소 소화율에서는 S20처리구가 S30처리구와 비교 하여 높게 나타났으며(p<0.05), 혈액 내 cortisol 함량의 변화는 호맥 사일리지를 급여한 처리구가 대조구와 비교하여 감소하였다(p<0.05). 육질특성은 처리구 간 유의적인 차이가 없었으나(p>0.05), 등지방 두께는 대조구가 S20, S30처리구에 비하여 두껍게 나타났다(p<0.05). 살코기 내 지방산 조성을 살펴보면 stearate, total SFA 및 UFA/SFA는 대조구가 다른 처리구와 비교하여 높은 함량을 나타냈으나, total MUFA는 유의적으로 낮은 함량을 나타냈다(p<0.05). 지방 내 지방산 조성은 oleate 와 total MUFA는 S20처리구와 S30처리구가 다른 처리구와 비교하여 높게 나타났다(p<0.05). 결론적으로, 비육돈 사료 내 호맥 사일리지의 급여 및 급여기간은 사료섭취량, 건물소화율에 영향을 미쳤으며, 혈액 내 cortisol 함량, 등지방 두께 및 육의 지방산 조성에 긍정적인 영향을 나타내었다.응답이 가장 많았고 대부분 집게로 집어 빨래 줄에 말리는 경우가 많았다. 모자 세탁 시 세탁방법, 건조방법, 건조장소의 요인들보다 세제종류가 세탁 후 변형에 영향을 미치는 것으로 조사되어 적절한 세제를 사용할 수 있는 정보를 소비자에게 인지시켜 피해를 줄이는데 노력하여야 할 것이다. 또 보관방법으로는 대부분 옷장 선반에 두고 있었으며 보관 후 형태변화 결과를 경험한 소비자의 비율이 높은 것으로 보아 적합한 모자 보관으로 형태유지에 각별한 주의가 요구된다. 셋째, 대부분의 모자 소비자들은 레이블에 대한 중요성을 인지하고 있으나 다른 의복 아이템에 비하여 모자레이블에 대한 신뢰도는 더 낮게 나타나, 공급자들은 정확하고 실질적인 레이블을 표기하여 신뢰도 회복을 기해야 할 것이다. 많은 소비자들이 모자의 치수 체계 이해에 어려움을 갖고 있으며, 특히 남성의 경우 레이블에 대한 전반적인 인지도가 낮게 나타나 남성 소비자에게도 전반적인 레이블에 대해 교육시키도록 구체적인 노력이 이루어져야만 하겠다. 후속연구에서는 모자의 다양한 형태나 재료에 따른 세탁 및 관리 방법을 보완하여 연구가 수행되어서 보다 구체적인 자료가 제공되어야 할 것으로 보인다.로 초지의 중요성을 구체적으로 구명하였다. 정부는 초지의 규제완화를 추진하고 있다. 그러나 초지에 대한 무분별한 개발은 오히려 제주의 환경파괴, 소중한 관광자원의 소실, 수백 년간 가축방목지로 활용되어온 축산기반의 붕괴, 유기축산 실현과 청정 환경을 유지하는 생태자원보고 천혜의 조건을 파괴하늘 것으로 초지의 전용은 미래 세대를 위한 존재가치, 환경보존 및 축산업 유지 등 여러 관점에서 보면 초지를 유지 보전하는 것이 제주도의 관광 상품성을 제고할 수 있어 더 많은 부가가치를 창출할 수 있을 것으로 사료된다. 한 번 생각하게끔 한다. 이 연구의 결과는 다양한 종류의 지각된 위험 요소가 내재된 홈쇼핑의 효과적인 설득전략을 위해서는 단순히 시간과 수량을 제한하는 희소성 메시지 기법 외에 이용자의

• 대한의용생체공학회:의공학회지
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• 제6권2호
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• pp.1-8
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• 1985

The wall shear stress in the vicinity of end-to end anastomoses under steady flow conditions was measured using a flush-mounted hot-film anemometer(FMHFA) probe. The experimental measurements were in good agreement with numerical results except in flow with low Reynolds numbers. The wall shear stress increased proximal to the anastomosis in flow from the Penrose tubing (simulating an artery) to the PTFE: graft. In flow from the PTFE graft to the Penrose tubing, low wall shear stress was observed distal to the anastomosis. Abnormal distributions of wall shear stress in the vicinity of the anastomosis, resulting from the compliance mismatch between the graft and the host artery, might be an important factor of ANFH formation and the graft failure. The present study suggests a correlation between regions of the low wall shear stress and the development of anastomotic neointimal fibrous hyperplasia(ANPH) in end-to-end anastomoses. 30523 T00401030523 ^x Air pressure decay(APD) rate and ultrafiltration rate(UFR) tests were performed on new and saline rinsed dialyzers as well as those roused in patients several times. C-DAK 4000 (Cordis Dow) and CF IS-11 (Baxter Travenol) reused dialyzers obtained from the dialysis clinic were used in the present study. The new dialyzers exhibited a relatively flat APD, whereas saline rinsed and reused dialyzers showed considerable amount of decay. C-DAH dialyzers had a larger APD(11.70$\pm$1.32mmHg/min)compared to CF dialyzers(4.32$\pm$0.55mmHg/min)(p<0.05). However, there was no observable difference in the UFR between the two dialyzers. Neither APD nor UFR showed any significant increase with an increasing number of reuses for up to more than 20reuses. A substantial number of failures observed in APD(larger than 20mmHe/min)on the reused dialyzers(2 out of 40 CP and S out 26 C-DAK) were attributed to the Possible damage on the fibers. The CF 15-11 HFDs which failed APD test did not show changes in the UFR compared to normal dialyzers indicating that APD is a more sensitive test than UFR test to evaluate the integrity of the fibers. 30527 T00401030527 ^x For quantitative measurement of reflected light from a clinical diagnostic strip, a prototype old reflectance photometer was designed. The strip loader and cassette were made to obtain more accurate reflectance parameters. The strip was illuminated at 45˚c through optical fiber and the intensity of reflected light was determined at rectanguLat angle using a photodiode. The kubelka-munk coefficient and reflection optical density were determined ar four different wavelengths(500, 550, 570 and 610nm) for blood glucose strip. For higher concentration than 300mg/41 about glucose, a saturation state of abforbance was observed at 500, 550 and 570nm. The correlation between glucose concentration and parameters was the best at 610nm. 30535 T00401030535 ^x Radiation-induced fibrosarcoma tumors were grown on the flanks of C3H mice. The mice were divided into two groups. One group was injected with Photofrin II, intravenously (2.5mg/kg body weight). The other group received no Photofrin II. Mice from both groups were irradialed for approximately 15 minutes at 100, 300, or 500 mW/cm2 with the argon (488nm/514.5 nm), dye(628nm) and gold vapor (pulsed 628 nm) laser light. A photosensitizer behaved as an added absorber. Under our experimental conditions, the presence of Photolfrin II increased surface temperature by at least 40% and the temperature rise due to 300 mW/cm2 irradiation exceeded values for hyperthermia. Light and temperature distributions with depth were estimated by a computer model. The model demonstrated the influence of wavelength on the thermal process and proved to be a valuable tool to investigate internal temperature rise. 30536 T00401030536 ^x We investigated the structural geometry of thirty-eight Korean femurs. The purpose of this study is to identify major geometrical differences between Korean femurs 3nd others that we believe belong to Caucasians so that we would be able to get insights into the femoral component design that fits Asians including Koreans. We utilized computerized tomography (CT) images of femurs extracted from cadavers. The CT images were transformed into bitmap data by using a film scanner, and then analyzed by using a commercially available software called Image v.1.0 and a Macintosh IIci computer.The resulting data were compared with already published data. The major results show that the geometry of the Korean femurs is significantly different from that of Caucasians: (1) the anteversion angle and the canal flare index are greater by the amount of approximately 8˚ and 0.5, respectively, (2) the shape of the isthmus cross section is more round, and (3) the distance between the teaser trochanter and the proximal border of the isthmus is shelter by about 15 mm. The results suggested that the femoral component suitable for Asians should be different from the currently-used components designed and manufactured mostly by European or American companies. 30537 T00401030537 ^x It is well known that nonlinear propagation characteristics of the wave in the tissue may give very useful information for the medical diagnoisis. In this paper, a new method to detect nonlinear propagation characteristics of the internal vibration in the tissue for the low frequency mechanical vibration by using bispectral analysis is proposed. In the method, low frequency vibration of f0( = 100Hz) is applied on the surface of the object, and the waveform of the internal vibration x (t) is measured from Doppler frequency modulation of silmultaneously transmitted probing ultrasonic waves. Then, the bispectra of the signal x (t) at the frequencies (f0, f0) and (f0, 2f0) are calculated to estimate the nonlinear propagation characteristics as their magnitude ratio, w here since bispectrum is free from the gaussian additive noise we can get the value with high S/N. Basic experimental system is constructed by using 3.0 MHz probing ultrasonic waves and the several experiments are carried out for some phantoms. Results show the superiority of the proposed method to the conventional method using power spectrum and also its usefulness for the tissue characterization. 30541 T00401030541 ^x This paper describes the implementation of a computerized radial pulse diagnosis by aids of a clinical expert. On this base, we composed of the radial pulse diagnosis system in korean traditional medicine. The system composed of a radial pulse wave detection system and a radial pulse diagnosis system. With a detection system, we detected Inyoung and Cheongu radial pulse wave and processed it. Then, we have got the characteristic parameters of radial pulse wave and also quantified that according to the method of Inyoung-Cheongu Comparison Radial Pulse Diagnosis. We defined the jugement standard of radial pulse diagnosis system and then we confirmed the possibility for realization of automatic radial pulse diagnosis in korean traditional medicine. 30545 T00401030545 ^x Microspheres are expected to be applied to biomedical areas such as solid-phase immunoassays, drug delivery systems, immunomagnetic cell separation. To synthesize microspheres for biomedical application, "two stage shot growth method" was developed. The uniformity ratio of synthesized microspheres was always smaller than 1.05. And the surface charge density (or the number of ionizable functional groups) of the microspheres synthesized by "two stage shot growth method" was 6~13 times higher than that of the microspheres synthesized by conventional seeded batch copolymerization. As a previous step for biomedical application, adsorption experiments of bovine albumin on microspheres were carried out under various conditions. The maximum adsorbed amount was obtained in the neighborhood of pH 4.5. Isoelectric point of bovine albumin is pH 5.0, so experimental result shows that it shifted to acid area. The adsorption isotherm was obtained, the plateau region was always reached at 2.Og/L (bulk concentration of bovine albumin).The effect of the kind and the amount of surface functional group was also examined. 30575 T00401030575 ^x A medical image workstation was developed using multimedia technique. The system based on PC-486DX was designed to acquire medical images produced by medical imaging instruments and related audio information, that is, doctors' reporting results. Input information was processed and analyzed, then the results were presented in the form of graph and animation. All the informations of the system were hierarchically related with the image as the apex. Processing and analysis algorithms were implemented so that the diagnostic accuracy could be improved. The diagnosed information can be transferred for patient diagnosis through LAN(local area network). 30592 T00401030592 ^x In the conventional infrared imaging system, complex infrared lens systems are usually used for directing collimated narrow infrared beams into the high speed 2-dimensional optic scanner. In this paper, a simple reflective infrared optic system with a 2-dimensional optic scanner is proposed for the realization of medical infrared thermography system. It has been experimentally proven that the intfrared thermography system composed of the proposed optic system has the temperature resolution of 0.1˚c under the spatial resolution of lmrad, the image matrix size of 256 X 240, and tile imaging time of 4 seconds. 30593 T00401030593 ^x In this paper, MIIS (Medical Image Information System) has been designed and implemented using INGRES RDBMS, which is based on a client/server architecture. The implemented system allows users to register and retrieve patient information, medical images and diagnostic reports. It also provides the function to display these information on workstation windows simultaneously by using the designed menu-driven graphic user interface. The medical image compression/decompression techniques are implemented and integrated into the medical image database system for the efficient data storage and the fast access through the network. 30594 T00401030594 ^x In this paper, computerized BEAM was implemented for the space domain analysis of EEG. Trans-formation from temporal summation to two-dimensional mappings is formed by 4 nearest point inter-polaton method. Methods of representation of BEAM are two. One is dot density method which classify brain electrical potential 9 levels by dot density of gray levels and the other is colour method which classify brain electrical 12 levels by red-green colours. In this BEAM, instantaneous change and average energy distribution over any arbitrary time interval of brain electrical activity could be observed and analyzed easily. In the frequency domain, the distribution of energy spectrum of a special band can easily be distinguished normality and abnormality. 30608 T00401030608 ^x Laboratory information system (LIS) is a key tool to manage laboratory data in clinical pathology. Our department has developed an information system for routine hematology using down-sized computer system. We have used an IBM 486 compatible PC with 16MB main memory, 210 MB hard disk drive, 9 RS-232C port and 24 pin dot printer. The operating system and database management system were SCO UNIX and SCO foxbase, respectively. For program development, we used Xbase language provided by SCO foxbase. The C language was used for interface purpose. To make the system use friendly, pull-down menu was used. The system connected to our hospital information system via application program interface (API), so the information related to patient and request details is automatically transmitted to our computer. Our system interfaced with fwd complete blood count analyzers(Sysmex NE-8000 and Coulter STKS) for unidirectional data tansmission from analyzer to computer. The authors suggests that this system based on down-sized computer could provide a progressive approach to total LIS based on local area network, and the implemented system could serve as a model for other hospital's LIS for routine hematology. 30609 T00401030609 ^x To develop an artificial bone substitute that is gradually degraded and replaced by the regenerated natural bone, the authors designed a composite that is consisted of calcium phosphate and collagen. To use as the structural matrix of the composite, collagen was purified from human umbilical cord. The obtained collagen was treated by pepsin to remove telopeptides, and finally, the immune-free atelocollagen was produced: The cross linked atelocollagen was highly resistant to the collagenase induced collagenolysis. The cross linked collagen demonstrated an improved tensile strength. 30618 T00401030618 ^x This paper is a study on the design of adptive filter for QRS complex detection. We propose a simple adaptive algorithm to increase capability of noise cancelation in QRS complex detection with two stage adaptive filter. At the first stage, background noise is removed and at the next stage, only spectrum of QRS complex components is passed. Two adaptive filters can afford to keep track of the changes of both noise and QRS complex. Each adaptive filter consists of prediction error filter and FIR filter The impulse response of FIR filter uses coefficients of prediction error filter. The detection rates for 105 and 108 of MIT/BIH data base were 99.3% and 97.4% respectively. 30619 T00401030619 ^x To develop an artificial bone substitute that is gradually degraded and replaced by the regenerated natural bone, the authors designed and produced a composite that is consisted of calcium phosphate and collagen. Human umbilical cord origin pepsin treated type I atelocollagen was used as the structural matrix, by which sintered or non-sintered carbonate apatite was encapsulated to form an inorganic-organic composite. With cross linking atelocollagen by UV ray irradiation, the resistance to both compressive and tensile strength was increased. Collagen degradation by the collagenase induced collagenolysis was also decreased. 30620 T00401030620 ^x We have developed a monoleaflet polymer valve as an inexpensive and viable alternative, especially for short-term use in the ventricular assist device or total artificial heart. The frame and leaflet of the polymer valve were made from polyurethane, To evaluate the hemodynamic performance of the polymer valve a comparative study of flow dynamics past a polymer valve and a St. Jude Medical prosthetic valve under physiological pulsatile flow conditions in vitro was made. Comparisons between the valves were made on the transvalvular pressure drop, regurgitation volume and maximum valve opening area. The polymer valve showed smaller regurgitation volume and transvalvular pressure drop compared to the mechanical valve at higher heart rate. The results showed that the functional characteristics of the polymer valve compared favorably with those of the mechanical valve at higher heart rate. 30621 T00401030621 ^x Explosive evaporative removal process of biological tissue by absorption of a CW laser has been simulated by using gelatin and a multimode Nd:YAG laser. Because the point of maximun temperature of laser-irradiated gelatin exists below the surface due to surface cooling, evaporation at the boiling temperature is made explosively from below the surface. The important parameters of this process are the conduction loss to laser power absorption (defined as the conduction-to-laser power parameter, Nk), the convection heat transfer at the surface to conduction loss (defined as Bi), dimensionless extinction coefficient (defined as Br.), and dimensionless irradiation time (defined as Fo). Dependence of Fo on Nk and Bi has been observed by experiment, and the results have been compared with the numerical results obtained by solving a 2-dimensional conduction equation. Fo and explosion depth (from the surface to the point of maximun temperature) are increased when Nk and Bi are increased.To find out the minimum laser power for explosive evaporative removal process, steady state analysis has been also made. The limit of Nk to induce evaporative removal, which is proportional to the inverse of the laser power, has been obtained. 30622 T00401030622 ^x N1 and N2 gross neural action potentials were measured from the round window of the guinea pig cochlea at the onset of the acoustic stimuli. N1-N2 audiograms were made by means of regulating stimulant intensities in order to produce constant N1-N2 potentials as criteria for different input tone pip frequencies. The lowest threshold was measured with an input tone pip I5 dB SPL in intensity and 12 KHz in frequency when the animal was in normal physiological condition. The procedure of experimental measurements is explained in detail. This experimental approach is very useful for the investigation of the Cochlear function. Both noN1inear and active functions of the Cochlea can be monitored by N1-N2 audiograms. 30623 T00401030623 ^x In electrical impedance tomography(EIT), we use boundary current and voltage measurements toprovide the information about the cross-sectional distribution of electrical impedance or resistivity. One of the major problems in EIT has been the inaccessibility of internal voltage or current data in finding the internal impedance values. We propose a new image reconstruction method using internal current density data measured by NMR. We obtained a two-dimensional current density distribution within a phantom by processing the real and imaginary MR images from a 4.77 NMR machine. We implemented a resistivity mage reconstruction algorithm using the finite element method and sensitivity matrix. We presented computer simulation results of the mage reconstruction algorithm and furture direction of the research. 30624 T00401030624 ^x A new method of digital image analysis technique for discrimination of cancer cell was presented in this paper. The object image was the Thyroid eland cells image that was diagnosed as normal and abnormal (two types of abnormal: follicular neoplastic cell, and papillary neoplastic cell), respectively. By using the proposed region segmentation algorithm, the cells were segmented into nucleus. The 16 feature parameters were used to calculate the features of each nucleus. A9 a consequence of using dominant feature parameters method proposed in this paper, discrimination rate of 91.11% was obtained for Thyroid Gland cells. 30625 T00401030625 ^x An electrical stimulator was designed to induce locomotion for paraplegic patients caused by central nervous system injury. Optimal stimulus parameters, which can minimize muscle fatigue and can achieve effective muscle contraction were determined in slow and fast muscles in Sprague-Dawley rats. Stimulus patterns of our stimulator were designed to simulate electromyographic activity monitored during locomotion of normal subjects. Muscle types of the lower extremity were classified according to their mechanical property of contraction, which are slow muscle (msoleus m.) and fast muscle (medial gastrocneminus m., rectus femoris m., vastus lateralis m.). Optimal parameters of electrical stimulation for slow muscles were 20 Hz, 0.2 ms square pulse. For fast muscle, 40 Hz, 0.3 ms square pulse was optimal to produce repeated contraction. Higher stimulus intensity was required when synergistic muscles were stimulated simultaneously than when they were stimulated individually. Electrical stimulation for each muscle was designed to generate bipedal locomotion, so that individual muscles alternate contraction and relaxation to simulate stance and swing phases. Portable electrical stimulator with 16 channels built in microprocessor was constructed and applied to paraplegic patients due to lumbar cord injury. The electrical stimulator restored partially gait function in paraplegic patients. 30626 T00401030626 ^x Two-Dimensional modelling of the Cochlear biomechanics is presented in this paper. The Laplace partial differential equation which represents the fluid mechanics of the Cochlea has been transformed into two-dimensional electrical transmission line. The procedure of this transformation is explained in detail. The comparison between one and two dimensional models is also presented. This electrical modelling of the basilar membrane (BM) is clearly useful for the next approach to the further. Development of active elements which are essential in the producing of the sharp tuning of the BM. This paper shows that two-dimension model is qualitatively better than one-dimensional model both in amplitude and phase responses of the BM displacement. The present model is only for frequency response. However because the model is electrical, the two-dimensional transmission line model can be extended to time response without any difficult. 30627 T00401030627 ^x A method has been proposed for the fully automatic detection of left ventricular endocardial boundary in 2D short axis echocardiogram using geometric model. The procedure has the following three distinct stages. First, the initial center is estimated by the initial center estimation algorithm which is applied to decimated image. Second, the center estimation algorithm is applied to original image and then best-fit elliptic model estimation is processed. Third, best-fit boundary is detected by the cost function which is based on the best-fit elliptic model. The proposed method shows effective result without manual intervention by a human operator. 30628 T00401030628 ^x The intelligent trajectory control method that controls moving direction and average velocity for a prosthetic arm is proposed by pattern recognition and force estimations using EMG signals. Also, we propose the real time trajectory planning method which generates continuous accelleration paths using 3 stage linear filters to minimize the impact to human body induced by arm motions and to reduce the muscle fatigue. We use combination of MLP and fuzzy filter for pattern recognition to estimate the direction of a muscle and Hogan's method for the force estimation. EMG signals are acquired by using a amputation simulator and 2 dimensional joystick motion. The simulation results of proposed prosthetic arm control system using the EMf signals show that the arm is effectively followed the desired trajectory depended on estimated force and direction of muscle movements. 30638 T00401030638 ^x A new neural network architecture for the recognition of patterns from images is proposed, which is partially based on the results of physiological studies. The proposed network is composed of multi-layers and the nerve cells in each layer are connected by spatial filters which approximate receptive fields in optic nerve fields. In the proposed method, patterns recognition for complicated images is carried out using global features as well as local features such as lines and end-points. A new generating method of matched filers representing global features is proposed in this network. 30659 T00401030659 ^x An implementation scheme of the magnetic nerve stimulator using a switching mode power supply is proposed. By using a switching mode power supply rather than a conventional linear power supply for charging high voltage capacitors, the weight and size of the magnetic nerve stimulator can be considerably reduced. Maximum output voltage of the developed magnetic nerve stimulator using the switching mode power supply is 3, 000 volts and switching time is about 100 msec. Experimental results or human nerve stimulations using the developed stimulator are presented. 30768 T00401030768 ^x In this paper, we describe the design methodology and specifications of the developed module-based bedside monitors for patient monitoring. The bedside monitor consists of a main unit and module cases with various parameter modules. The main unit includes a 12.1" TFT color LCD, a main CPU board, and peripherals such as a module controller, Ethernet LAN card, video card, rotate/push button controller, etc. The main unit can connect at maximum three module cases each of which can accommodate up to 7 parameter modules. They include the modules for electrocardiograph, respiration, invasive blood pressure, noninvasive blood pressure, temperature, and SpO2 with Plethysmograph.SpO2 with Plethysmograph.

• 한국우주과학회:학술대회논문집(한국우주과학회보)
• /
• 한국우주과학회 1993년도 한국우주과학회보 제2권2호
• /
• pp.17-17
• /
• 1993

The wall shear stress in the vicinity of end-to end anastomoses under steady flow conditions was measured using a flush-mounted hot-film anemometer(FMHFA) probe. The experimental measurements were in good agreement with numerical results except in flow with low Reynolds numbers. The wall shear stress increased proximal to the anastomosis in flow from the Penrose tubing (simulating an artery) to the PTFE: graft. In flow from the PTFE graft to the Penrose tubing, low wall shear stress was observed distal to the anastomosis. Abnormal distributions of wall shear stress in the vicinity of the anastomosis, resulting from the compliance mismatch between the graft and the host artery, might be an important factor of ANFH formation and the graft failure. The present study suggests a correlation between regions of the low wall shear stress and the development of anastomotic neointimal fibrous hyperplasia(ANPH) in end-to-end anastomoses. 30523 T00401030523 ^x Air pressure decay(APD) rate and ultrafiltration rate(UFR) tests were performed on new and saline rinsed dialyzers as well as those roused in patients several times. C-DAK 4000 (Cordis Dow) and CF IS-11 (Baxter Travenol) reused dialyzers obtained from the dialysis clinic were used in the present study. The new dialyzers exhibited a relatively flat APD, whereas saline rinsed and reused dialyzers showed considerable amount of decay. C-DAH dialyzers had a larger APD(11.70${\pm}$1.32mmHg/min)compared to CF dialyzers(4.32${\pm}$0.55mmHg/min)(p<0.05). However, there was no observable difference in the UFR between the two dialyzers. Neither APD nor UFR showed any significant increase with an increasing number of reuses for up to more than 20reuses. A substantial number of failures observed in APD(larger than 20mmHe/min)on the reused dialyzers(2 out of 40 CP and S out 26 C-DAK) were attributed to the Possible damage on the fibers. The CF 15-11 HFDs which failed APD test did not show changes in the UFR compared to normal dialyzers indicating that APD is a more sensitive test than UFR test to evaluate the integrity of the fibers. 30527 T00401030527 ^x For quantitative measurement of reflected light from a clinical diagnostic strip, a prototype old reflectance photometer was designed. The strip loader and cassette were made to obtain more accurate reflectance parameters. The strip was illuminated at 45˚c through optical fiber and the intensity of reflected light was determined at rectanguLat angle using a photodiode. The kubelka-munk coefficient and reflection optical density were determined ar four different wavelengths(500,550,570 and 610nm) for blood glucose strip. For higher concentration than 300mg/41 about glucose, a saturation state of abforbance was observed at 500,550 and 570nm. The correlation between glucose concentration and parameters was the best at 610nm. 30535 T00401030535 ^x Radiation-induced fibrosarcoma tumors were grown on the flanks of C3H mice. The mice were divided into two groups. One group was injected with Photofrin II, intravenously (2.5mg/kg body weight). The other group received no Photofrin II. Mice from both groups were irradialed for approximately 15 minutes at 100,300, or 500 mW/cm2 with the argon (488nm/514.5 nm), dye(628nm) and gold vapor (pulsed 628 nm) laser light. A photosensitizer behaved as an added absorber. Under our experimental conditions, the presence of Photolfrin II increased surface temperature by at least 40% and the temperature rise due to 300 mW/cm2 irradiation exceeded values for hyperthermia. Light and temperature distributions with depth were estimated by a computer model. The model demonstrated the influence of wavelength on the thermal process and proved to be a valuable tool to investigate internal temperature rise. 30536 T00401030536 ^x We investigated the structural geometry of thirty-eight Korean femurs. The purpose of this study is to identify major geometrical differences between Korean femurs 3nd others that we believe belong to Caucasians so that we would be able to get insights into the femoral component design that fits Asians including Koreans. We utilized computerized tomography (CT) images of femurs extracted from cadavers. The CT images were transformed into bitmap data by using a film scanner, and then analyzed by using a commercially available software called Image v.1.0 and a Macintosh IIci computer.The resulting data were compared with already published data. The major results show that the geometry of the Korean femurs is significantly different from that of Caucasians: (1) the anteversion angle and the canal flare index are greater by the amount of approximately 8˚ and 0.5, respectively, (2) the shape of the isthmus cross section is more round, and (3) the distance between the teaser trochanter and the proximal border of the isthmus is shelter by about 15 mm. The results suggested that the femoral component suitable for Asians should be different from the currently-used components designed and manufactured mostly by European or American companies. 30537 T00401030537 ^x It is well known that nonlinear propagation characteristics of the wave in the tissue may give very useful information for the medical diagnoisis. In this paper, a new method to detect nonlinear propagation characteristics of the internal vibration in the tissue for the low frequency mechanical vibration by using bispectral analysis is proposed. In the method, low frequency vibration of f0( = 100Hz) is applied on the surface of the object, and the waveform of the internal vibration x (t) is measured from Doppler frequency modulation of silmultaneously transmitted probing ultrasonic waves. Then, the bispectra of the signal x (t) at the frequencies (f0, f0) and (f0, 2f0) are calculated to estimate the nonlinear propagation characteristics as their magnitude ratio, w here since bispectrum is free from the gaussian additive noise we can get the value with high S/N. Basic experimental system is constructed by using 3.0 MHz probing ultrasonic waves and the several experiments are carried out for some phantoms. Results show the superiority of the proposed method to the conventional method using power spectrum and also its usefulness for the tissue characterization. 30541 T00401030541 ^x This paper describes the implementation of a computerized radial pulse diagnosis by aids of a clinical expert. On this base, we composed of the radial pulse diagnosis system in korean traditional medicine. The system composed of a radial pulse wave detection system and a radial pulse diagnosis system. With a detection system, we detected Inyoung and Cheongu radial pulse wave and processed it. Then, we have got the characteristic parameters of radial pulse wave and also quantified that according to the method of Inyoung-Cheongu Comparison Radial Pulse Diagnosis. We defined the jugement standard of radial pulse diagnosis system and then we confirmed the possibility for realization of automatic radial pulse diagnosis in korean traditional medicine. 30545 T00401030545 ^x Microspheres are expected to be applied to biomedical areas such as solid-phase immunoassays, drug delivery systems, immunomagnetic cell separation. To synthesize microspheres for biomedical application, "two stage shot growth method" was developed. The uniformity ratio of synthesized microspheres was always smaller than 1.05. And the surface charge density (or the number of ionizable functional groups) of the microspheres synthesized by "two stage shot growth method" was 6~13 times higher than that of the microspheres synthesized by conventional seeded batch copolymerization. As a previous step for biomedical application, adsorption experiments of bovine albumin on microspheres were carried out under various conditions. The maximum adsorbed amount was obtained in the neighborhood of pH 4.5. Isoelectric point of bovine albumin is pH 5.0, so experimental result shows that it shifted to acid area. The adsorption isotherm was obtained, the plateau region was always reached at 2.Og/L (bulk concentration of bovine albumin).The effect of the kind and the amount of surface functional group was also examined. 30575 T00401030575 ^x A medical image workstation was developed using multimedia technique. The system based on PC-486DX was designed to acquire medical images produced by medical imaging instruments and related audio information, that is, doctors' reporting results. Input information was processed and analyzed, then the results were presented in the form of graph and animation. All the informations of the system were hierarchically related with the image as the apex. Processing and analysis algorithms were implemented so that the diagnostic accuracy could be improved. The diagnosed information can be transferred for patient diagnosis through LAN(local area network). 30592 T00401030592 ^x In the conventional infrared imaging system, complex infrared lens systems are usually used for directing collimated narrow infrared beams into the high speed 2-dimensional optic scanner. In this paper, a simple reflective infrared optic system with a 2-dimensional optic scanner is proposed for the realization of medical infrared thermography system. It has been experimentally proven that the intfrared thermography system composed of the proposed optic system has the temperature resolution of 0.1˚c under the spatial resolution of lmrad, the image matrix size of 256 X 240, and tile imaging time of 4 seconds. 30593 T00401030593 ^x In this paper, MIIS (Medical Image Information System) has been designed and implemented using INGRES RDBMS, which is based on a client/server architecture. The implemented system allows users to register and retrieve patient information, medical images and diagnostic reports. It also provides the function to display these information on workstation windows simultaneously by using the designed menu-driven graphic user interface. The medical image compression/decompression techniques are implemented and integrated into the medical image database system for the efficient data storage and the fast access through the network. 30594 T00401030594 ^x In this paper, computerized BEAM was implemented for the space domain analysis of EEG. Trans-formation from temporal summation to two-dimensional mappings is formed by 4 nearest point inter-polaton method. Methods of representation of BEAM are two. One is dot density method which classify brain electrical potential 9 levels by dot density of gray levels and the other is colour method which classify brain electrical 12 levels by red-green colours. In this BEAM, instantaneous change and average energy distribution over any arbitrary time interval of brain electrical activity could be observed and analyzed easily. In the frequency domain, the distribution of energy spectrum of a special band can easily be distinguished normality and abnormality. 30608 T00401030608 ^x Laboratory information system (LIS) is a key tool to manage laboratory data in clinical pathology. Our department has developed an information system for routine hematology using down-sized computer system. We have used an IBM 486 compatible PC with 16MB main memory, 210 MB hard disk drive, 9 RS-232C port and 24 pin dot printer. The operating system and database management system were SCO UNIX and SCO foxbase, respectively. For program development, we used Xbase language provided by SCO foxbase. The C language was used for interface purpose. To make the system use friendly, pull-down menu was used. The system connected to our hospital information system via application program interface (API), so the information related to patient and request details is automatically transmitted to our computer. Our system interfaced with fwd complete blood count analyzers(Sysmex NE-8000 and Coulter STKS) for unidirectional data tansmission from analyzer to computer. The authors suggests that this system based on down-sized computer could provide a progressive approach to total LIS based on local area network, and the implemented system could serve as a model for other hospital's LIS for routine hematology. 30609 T00401030609 ^x To develop an artificial bone substitute that is gradually degraded and replaced by the regenerated natural bone, the authors designed a composite that is consisted of calcium phosphate and collagen. To use as the structural matrix of the composite, collagen was purified from human umbilical cord. The obtained collagen was treated by pepsin to remove telopeptides, and finally, the immune-free atelocollagen was produced: The cross linked atelocollagen was highly resistant to the collagenase induced collagenolysis. The cross linked collagen demonstrated an improved tensile strength. 30618 T00401030618 ^x This paper is a study on the design of adptive filter for QRS complex detection. We propose a simple adaptive algorithm to increase capability of noise cancelation in QRS complex detection with two stage adaptive filter. At the first stage, background noise is removed and at the next stage, only spectrum of QRS complex components is passed. Two adaptive filters can afford to keep track of the changes of both noise and QRS complex. Each adaptive filter consists of prediction error filter and FIR filter The impulse response of FIR filter uses coefficients of prediction error filter. The detection rates for 105 and 108 of MIT/BIH data base were 99.3% and 97.4% respectively. 30619 T00401030619 ^x To develop an artificial bone substitute that is gradually degraded and replaced by the regenerated natural bone, the authors designed and produced a composite that is consisted of calcium phosphate and collagen. Human umbilical cord origin pepsin treated type I atelocollagen was used as the structural matrix, by which sintered or non-sintered carbonate apatite was encapsulated to form an inorganic-organic composite. With cross linking atelocollagen by UV ray irradiation, the resistance to both compressive and tensile strength was increased. Collagen degradation by the collagenase induced collagenolysis was also decreased. 30620 T00401030620 ^x We have developed a monoleaflet polymer valve as an inexpensive and viable alternative, especially for short-term use in the ventricular assist device or total artificial heart. The frame and leaflet of the polymer valve were made from polyurethane, To evaluate the hemodynamic performance of the polymer valve a comparative study of flow dynamics past a polymer valve and a St. Jude Medical prosthetic valve under physiological pulsatile flow conditions in vitro was made. Comparisons between the valves were made on the transvalvular pressure drop, regurgitation volume and maximum valve opening area. The polymer valve showed smaller regurgitation volume and transvalvular pressure drop compared to the mechanical valve at higher heart rate. The results showed that the functional characteristics of the polymer valve compared favorably with those of the mechanical valve at higher heart rate. 30621 T00401030621 ^x Explosive evaporative removal process of biological tissue by absorption of a CW laser has been simulated by using gelatin and a multimode Nd:YAG laser. Because the point of maximun temperature of laser-irradiated gelatin exists below the surface due to surface cooling, evaporation at the boiling temperature is made explosively from below the surface. The important parameters of this process are the conduction loss to laser power absorption (defined as the conduction-to-laser power parameter, Nk), the convection heat transfer at the surface to conduction loss (defined as Bi), dimensionless extinction coefficient (defined as Br.), and dimensionless irradiation time (defined as Fo). Dependence of Fo on Nk and Bi has been observed by experiment, and the results have been compared with the numerical results obtained by solving a 2-dimensional conduction equation. Fo and explosion depth (from the surface to the point of maximun temperature) are increased when Nk and Bi are increased.To find out the minimum laser power for explosive evaporative removal process, steady state analysis has been also made. The limit of Nk to induce evaporative removal, which is proportional to the inverse of the laser power, has been obtained. 30622 T00401030622 ^x N1 and N2 gross neural action potentials were measured from the round window of the guinea pig cochlea at the onset of the acoustic stimuli. N1-N2 audiograms were made by means of regulating stimulant intensities in order to produce constant N1-N2 potentials as criteria for different input tone pip frequencies. The lowest threshold was measured with an input tone pip I5 dB SPL in intensity and 12 KHz in frequency when the animal was in normal physiological condition. The procedure of experimental measurements is explained in detail. This experimental approach is very useful for the investigation of the Cochlear function. Both noN1inear and active functions of the Cochlea can be monitored by N1-N2 audiograms. 30623 T00401030623 ^x In electrical impedance tomography(EIT), we use boundary current and voltage measurements toprovide the information about the cross-sectional distribution of electrical impedance or resistivity. One of the major problems in EIT has been the inaccessibility of internal voltage or current data in finding the internal impedance values. We propose a new image reconstruction method using internal current density data measured by NMR. We obtained a two-dimensional current density distribution within a phantom by processing the real and imaginary MR images from a 4.77 NMR machine. We implemented a resistivity mage reconstruction algorithm using the finite element method and sensitivity matrix. We presented computer simulation results of the mage reconstruction algorithm and furture direction of the research. 30624 T00401030624 ^x A new method of digital image analysis technique for discrimination of cancer cell was presented in this paper. The object image was the Thyroid eland cells image that was diagnosed as normal and abnormal (two types of abnormal: follicular neoplastic cell, and papillary neoplastic cell), respectively. By using the proposed region segmentation algorithm, the cells were segmented into nucleus. The 16 feature parameters were used to calculate the features of each nucleus. A9 a consequence of using dominant feature parameters method proposed in this paper, discrimination rate of 91.11% was obtained for Thyroid Gland cells. 30625 T00401030625 ^x An electrical stimulator was designed to induce locomotion for paraplegic patients caused by central nervous system injury. Optimal stimulus parameters, which can minimize muscle fatigue and can achieve effective muscle contraction were determined in slow and fast muscles in Sprague-Dawley rats. Stimulus patterns of our stimulator were designed to simulate electromyographic activity monitored during locomotion of normal subjects. Muscle types of the lower extremity were classified according to their mechanical property of contraction, which are slow muscle (msoleus m.) and fast muscle (medial gastrocneminus m., rectus femoris m., vastus lateralis m.). Optimal parameters of electrical stimulation for slow muscles were 20 Hz, 0.2 ms square pulse. For fast muscle, 40 Hz, 0.3 ms square pulse was optimal to produce repeated contraction. Higher stimulus intensity was required when synergistic muscles were stimulated simultaneously than when they were stimulated individually. Electrical stimulation for each muscle was designed to generate bipedal locomotion, so that individual muscles alternate contraction and relaxation to simulate stance and swing phases. Portable electrical stimulator with 16 channels built in microprocessor was constructed and applied to paraplegic patients due to lumbar cord injury. The electrical stimulator restored partially gait function in paraplegic patients. 30626 T00401030626 ^x Two-Dimensional modelling of the Cochlear biomechanics is presented in this paper. The Laplace partial differential equation which represents the fluid mechanics of the Cochlea has been transformed into two-dimensional electrical transmission line. The procedure of this transformation is explained in detail. The comparison between one and two dimensional models is also presented. This electrical modelling of the basilar membrane (BM) is clearly useful for the next approach to the further. Development of active elements which are essential in the producing of the sharp tuning of the BM. This paper shows that two-dimension model is qualitatively better than one-dimensional model both in amplitude and phase responses of the BM displacement. The present model is only for frequency response. However because the model is electrical, the two-dimensional transmission line model can be extended to time response without any difficult. 30627 T00401030627 ^x A method has been proposed for the fully automatic detection of left ventricular endocardial boundary in 2D short axis echocardiogram using geometric model. The procedure has the following three distinct stages. First, the initial center is estimated by the initial center estimation algorithm which is applied to decimated image. Second, the center estimation algorithm is applied to original image and then best-fit elliptic model estimation is processed. Third, best-fit boundary is detected by the cost function which is based on the best-fit elliptic model. The proposed method shows effective result without manual intervention by a human operator. 30628 T00401030628 ^x The intelligent trajectory control method that controls moving direction and average velocity for a prosthetic arm is proposed by pattern recognition and force estimations using EMG signals. Also, we propose the real time trajectory planning method which generates continuous accelleration paths using 3 stage linear filters to minimize the impact to human body induced by arm motions and to reduce the muscle fatigue. We use combination of MLP and fuzzy filter for pattern recognition to estimate the direction of a muscle and Hogan's method for the force estimation. EMG signals are acquired by using a amputation simulator and 2 dimensional joystick motion. The simulation results of proposed prosthetic arm control system using the EMf signals show that the arm is effectively followed the desired trajectory depended on estimated force and direction of muscle movements. 30638 T00401030638 ^x A new neural network architecture for the recognition of patterns from images is proposed, which is partially based on the results of physiological studies. The proposed network is composed of multi-layers and the nerve cells in each layer are connected by spatial filters which approximate receptive fields in optic nerve fields. In the proposed method, patterns recognition for complicated images is carried out using global features as well as local features such as lines and end-points. A new generating method of matched filers representing global features is proposed in this network. 30659 T00401030659 ^x An implementation scheme of the magnetic nerve stimulator using a switching mode power supply is proposed. By using a switching mode power supply rather than a conventional linear power supply for charging high voltage capacitors, the weight and size of the magnetic nerve stimulator can be considerably reduced. Maximum output voltage of the developed magnetic nerve stimulator using the switching mode power supply is 3,000 volts and switching time is about 100 msec. Experimental results or human nerve stimulations using the developed stimulator are presented. 30768 T00401030768 ^x In this paper, we describe the design methodology and specifications of the developed module-based bedside monitors for patient monitoring. The bedside monitor consists of a main unit and module cases with various parameter modules. The main unit includes a 12.1" TFT color LCD, a main CPU board, and peripherals such as a module controller, Ethernet LAN card, video card, rotate/push button controller, etc. The main unit can connect at maximum three module cases each of which can accommodate up to 7 parameter modules. They include the modules for electrocardiograph, respiration, invasive blood pressure, noninvasive blood pressure, temperature, and SpO2 with Plethysmograph.