• 기록학연구
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• 제18호
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• pp.139-178
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• 2008

최근 공표된 국내외 기록관리시스템 기능요건 표준은 기록관리 핵심 기능뿐 아니라 시스템관리와 선택적인 기능의 요건을 포함하여 상세한 수준에서 요건 기술을 하고 있다. 기능요건은 전자기록 관리의 실무 경험을 토대로 만들어지며, 정보기술의 표준화를 기반으로 전자기록 실무가 표준화되어 가는 추세에 따라 기능요건 표준들도 점차 내용적 공통성을 확보해 가고 있다. 또한, 기록관리전문가, 정보기술 전문가, 컨설턴트, 기록관리 응용패키지 벤더 등 다양한 전문가 그룹의 참여와 협력으로 만들어진 기능요건은 품질 수준이 향상되고 있을 뿐만 아니라 국제적 표준화의 경향도 높아지고 있다. 선진 모범 실무를 기반으로 만들어진 기록관리시스템 기능요건 표준을 벤치마킹하여 실무적 해석을 통해 유용한 시사점을 얻을 수 있다. 이 논문에서는 기록관리의 핵심이라 할 수 있는 분류와 처분 영역의 기능요건을 기록관리 업무와 연관하여 해석함으로써 우리나라 전자기록 실무에 의미있는 시사점을 얻고자 한다. 첫 번째로 분류의 계층 수를 고정적인 개수로 제한할 필요가 있는지, 분류의 말단에만 편철을 해야 하는지를 논의해 보고, 두 번째로 보유기간 기산일을 이벤트 방식으로 설정하는 방식의 특징과 상속개념을 이용하여 다중의 처분지침을 적용하는 방법에 대해 살펴보고, 세 번째로 기록관리가 조직의 규제준수와 위험관리에 대응하는 대안이 되어야 한다는 전제하에 각종 규제에 적극적으로 대응하기 위해 필요한 처분보류와 해제 기능에 대해 알아본다. 마지막으로 기록관리시스템이 기록관리자의 유용한 도구가 되기 위해 필수적인 기능인 대량 일괄작업에 대해 예시하고 있다. 기록관리자들은 기록관리시스템 기능요건 표준을 실무적 관점에서 해석할 줄 알아야 하며, 실무에 필요한 요건을 도출하여 전문적인 전자기록관리 업무 수행의 주요 도구인 기록관리시스템을 고도화해 나갈 수 있어야 한다. 국가기록원은 기록관리시스템 기능요건 표준의 적용 범위를 확대하여 다양한 이해당사자들이 공통의 기반에서 효과적, 효율적으로 전자기록관리 실무를 집행할 수 있는 토대를 마련해 가야 할 것이다.

• 벤처창업연구
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• 제16권3호
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• pp.13-29
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• 2021

이 연구는 서울시 세대별(청년층, 중년층) 창업의 공간적 분포와 영향 요인을 분석하는데 목적이 있었다. 이를 위해 창업가의 연령대 자료를 포함하고 있는 서울시 사업체조사(2018) 데이터를 활용하여 서울시 424개 행정동의 세대별 창업 분포를 분석했으며, 산업, 인구구조 및 창업지원 기관 관련 변인이 포함된 연구모형을 설정하여 세대별 창업의 영향 요인을 분석하였다. 분석 방법은 서울시 행정동의 세대별 창업과 주요 변인들의 빈도, 평균 및 표준편차를 확인하기 위해 기술통계를 활용했으며, 전역적, 국지적 공간자기상관 분석을 통해 세대별 창업의 공간적 분포를 분석하였다. 특히 세대별 전체 창업과 주요 산업별 창업을 구분하여 분석함으로써 서울시 창업의 공간 분포를 심층적으로 확인하였다. 이후 라그랑주 검정을 통해 공간회귀분석 모형을 선택하였으며, 이를 바탕으로 세대별 창업에 미치는 지역적 영향 요인을 분석하였다. 연구결과를 통해 도출한 주요 결과는 다음과 같다. 첫째, 청년층과 중년층 창업의 공간적 분포에 유의미한 차이가 있었다. 청년층은 서초·강남-용산-마포-강서구로 이어지는 벨트 지역에서 창업이 활발하게 이루어졌지만, 중년층은 서초·강남·송파·강동으로 대표되는 동남권 지역의 창업이 활발한 편이었다. 둘째, 서울시 세대별 창업은 업종에 따라 다양한 공간적 분포를 보였다. 지식첨단산업(정보통신, 전문서비스)은 세대 공통적으로 서초, 강남, 마포, 구로, 금천구가 중심지역이었으며, 제조업은 기존 집적지를 중심으로 창업이 집중되어 있었다. 반면 생활서비스업의 경우 청년층은 용산, 마포, 관악 등 대학과 문화 중심지역에서 창업이 활발했으며, 중년층은 신시가지 중심으로 창업이 집중되었다. 셋째, 서울시의 세대별 창업 입지에 대한 영향 요인에 차이가 있었다. 청년층은 첨단산업, 대학, 문화자본 및 인구 밀집이 창업에 유의미한 영향 요인이었으며, 중년층은 전문서비스 특화도, 낮은 평균연령, 창업지원 기관 밀집 수준이 창업에 유의미한 영향을 미쳤다. 또한 이러한 입지요인은 산업별로 차별적인 영향이 있었다. 연구를 통해 제시한 제언은 다음과 같다. 첫째, 서울시 지역, 산업 및 세대별 특성을 고려한 체계적인 창업지원이 필요하다. 세대별 창업 지역과 산업에 상당한 차이가 있는 만큼 지역 및 산업적 특성을 고려한 맞춤형 창업지원 체계를 강화할 필요가 있다. 둘째, 연구 방법적 측면에서 데이터 축적을 통해 자치구 단위에서 문화, 재정 등을 종합적으로 고려한 후속 연구가 필요하다.

• 수면정신생리
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• 제28권2호
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• pp.78-85
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• 2021

목 적 : 노년기 우울증 환자에서 우울증상이 알츠하이머병의 전구 증상으로 나타났는지를 감별하는 것은 중요한 임상적 과제이다. 본 연구에서는 정량화 뇌파(quantitative EEG) 지표가 노년기 우울증 환자의 알츠하이머병 병리를 예측할 수 있는 바이오마커로 기능할 수 있는지 확인하고자 하였다. 방 법 : 치매로 진단 받지 않은 55세 이상의 우울증 환자 63명이 본 연구에 포함되었다(여성 76.2%; 평균 연령 ± 표준편차 73.7 ± 6.87세). 연구 대상자들은 [¹⁸F] florbetabenPET 결과에 따라 아밀로이드 양성(Aβ+, n = 32)과 음성으로(Aβ-, n = 31) 분류하였다. 뇌파는 7분 간의 눈을 감은 상태(eye-closed, EC)와 3분 간의 눈을 뜬 상태(eye-open, EO)로 촬영하였으며, 푸리에 변환(Fourier transform)을 이용하여 스펙트럼 분석을 시행하였다. 선행연구 결과에 따라 안구 개폐 알파파 반응성 지표(EC-to-EO alpha reactivity index)가 노년기 우울증 환자의 아밀로이드 침착을 예측할 수 있는 신경생리학적 마커가 될 수 있는지 검증하였다. 알파 밴드 파워에서 아밀로이드 침착 여부(Aβ+ vs. Aβ-), 안구 개폐 조건(EC vs. EO), 지형학적 요인(laterality, polarity) 간의 상호작용을 확인하고 사후 분석을 시행하였다. 결 과 : Aβ+군과 Aβ-군에서 각 주파수 밴드의 평균 파워 스펙트럼 밀도 중 EO phase의 알파 밴드 파워에서만 유의미한 차이가 관찰되었다(F = 6.258, p = 0.015). 알파 밴드에서의 Group (Aβ+ vs. Aβ-) × Condition (EC vs. EO) × Laterality (Left, midline, or right) 3-way interaction이 연령, 성별, 교육 연수, 전반적 인지 기능, 약물 사용, MRI상 백질 고신호강도를 보정한 뒤에도 유의하였다(F = 3.720, p = 0.030). 하지만 대뇌 관심영역 별로 아밀로이드 침착에 따른 알파파 반응성을 비교한 사후 분석에서는 유의한 수준의 차이가 관찰되지 않았다. 결 론 : 노년기 우울증 환자에서 EO phase의 알파 밴드 파워 증가가 대뇌 아밀로이드 침착과 관련이 있었다. 하지만 본 연구에서 검증하고자 했던 안구개폐 알파파 반응성 지표는 알츠하이머병 병리를 예측하지는 못했다. 보다 많은 대상자를 포함한 추후 연구로 해당 결과를 재검증할 필요가 있다.

• 해양환경안전학회지
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• 제29권6호
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• pp.697-703
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• 2023

최근 대기오염으로 인한 환경오염을 줄이고자 국제 산업계의 노력의 일환으로 국제해사기구(IMO)의 규제 발효등으로 이어지고 있다. IMO는 EEXI,EEDI,CII 등 선박에서 나오는 대기오염을 줄이기 위해 각종 규제를 발효시키고 선박에서 소모되는 전력을 줄여 에너지를 절약하는 방안을 추진하고 있다. 선박에서 사용되는 전력의 대부분은 전동기가 차지한다. 선박에 설치된 전동기 중 큰 부하를 차지하는 기관실 송풍기는 수요와 관계없이 정속운전으로 운전하기 때문에 주파수제어를 통한 에너지절감을 기대할 수 있다. 본 연구에서는 발전기의 과급기에 연소공기를 공급하는 발전기 송풍기의 전동기 주파수를 제어하여 에너지 절감에 대한 실효성을 입증하였다. 송풍기 주파수 입력에 따른 과급기출구 온도의 출력 데이터를 기반으로 시스템을 모델링하고, 과급기 출구온도를 목표값으로 하여 주파수를 제어하는 PI 제어계를 형성하여 과급기 설계기준 출구온도를 유지하면서 송풍기의 주파수 제어를 통해 연간 15,552kW 전력소모량을 절감하였다. 송풍기 팬 주파수 제어를 통한 에너지절감액의 유효성은 하계(4월~9월) 및 동계(3월~10월) 기간동안 검증하였으며 이를 토대로 실습선의 연간 6,091천원의 유류비 절약과 이산화탄소 8.5Ton, SOx 2.4kg, NOx 7.8kg의 대기오염물질 저감을 달성하였다.

• 한국농림기상학회지
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• 제26권1호
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• pp.1-30
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• 2024

국제사회는 IPCC를 중심으로 SSP (Shared Socioeconomic Pathways) 기후변화 시나리오를 새로운 온실가스 변화 경로로 채택하고, 신기후변화 시나리오 기반으로 다양한 규모와 형태로 기후변화를 전망하고 분석하고 있다. 국립농업과학원은 이러한 국제적 동향을 반영하고 농업부문 기후변화 적응대책 지원을 위한 노력의 일환으로 신규 온실가스 경로에 기반한 한반도 상세(1km) 기후변화 시나리오를 산출하였다. 본 논문은 2022년 "국가 기후변화 표준 시나리오" 로 인증받은 국립농업과학원의 SSP 기후변화 시나리오 자료를 소개하고, 기후변화 전망 결과를 보여주고자 한다. 한반도의 미래 기후 변화에 대한 전망 정보를 생산하기 위해 CMIP6에 참여한 18개의 GCM 모형에서 생산된 전지구 규모의 기후 자료를 과거기간(1985-2014)과 미래기간(2015-2100)에 대해 수집하고, 1km 격자형 한반도 전자기후도와 SQM 방법을 이용하여 한반도 영역에 대해 통계적 상세화를 수행하였다. 21세기 후반기(2071~2100년), 한반도의 연평균 최고, 최저기온은 온실가스 배출 정도에 따라 각각 2.6~6.1 ℃, 2.5~6.3 ℃ 상승하고, 연강수량은 21.5~38.7 % 상승하는 것으로 전망되었다. 저탄소 시나리오(SSP1-2.6)의 경우 기온과 강수량 상승이 적게 나타나, 탄소 배출을 감축하는 경우에 상승 폭을 억제할 수 있을 것으로 전망되었다. 21세기 후반기의 우리나라 평균 풍속과 일사량은 상대적으로 현재 대비 미래에 큰 변화가 없을 것으로 전망하고 있다. 이 자료는 기후변화에 따를 미래의 불확실성을 이해하고 기후변화 적응을 위한 합리적인 의사결정에 기여할 수 있을 것으로 기대된다.

• 마케팅과학연구
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• 제19권1호
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• pp.37-46
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• 2009

The Census Bureau of the Department of Commerce announced in May 2008 that U.S. retail e-commerce sales for 2006 reached $ 107 billion, up from $ 87 billion in 2005 - an increase of 22 percent. From 2001 to 2006, retail e-sales increased at an average annual growth rate of 25.4 percent. The explosive growth of E-Commerce has caused profound changes in marketing channel relationships and structures in many industries. Despite the great potential implications for both academicians and practitioners, there still exists a great deal of uncertainty about the impact of the Internet channel introduction on distribution channel management. The purpose of this study is to investigate how the ownership of the new Internet channel affects the existing channel members and consumers. To explore the above research questions, this study conducts well-controlled mathematical experiments to isolate the impact of the Internet channel by comparing before and after the Internet channel entry. The model consists of a monopolist manufacturer selling its product through a channel system including one independent physical store before the entry of an Internet store. The addition of the Internet store to this channel system results in a mixed channel comprised of two different types of channels. The new Internet store can be launched by the independent physical store such as Bestbuy. In this case, the physical retailer coordinates the two types of stores to maximize the joint profits from the two stores. The Internet store also can be introduced by an independent Internet retailer such as Amazon. In this case, a retail level competition occurs between the two types of stores. Although the manufacturer sells only one product, consumers view each product-outlet pair as a unique offering. Thus, the introduction of the Internet channel provides two product offerings for consumers. The channel structures analyzed in this study are illustrated in Fig.1. It is assumed that the manufacturer plays as a Stackelberg leader maximizing its own profits with the foresight of the independent retailer's optimal responses as typically assumed in previous analytical channel studies. As a Stackelberg follower, the independent physical retailer or independent Internet retailer maximizes its own profits, conditional on the manufacturer's wholesale price. The price competition between two the independent retailers is assumed to be a Bertrand Nash game. For simplicity, the marginal cost is set at zero, as typically assumed in this type of study. In order to explore the research questions above, this study develops a game theoretic model that possesses the following three key characteristics. First, the model explicitly captures the fact that an Internet channel and a physical store exist in two independent dimensions (one in physical space and the other in cyber space). This enables this model to demonstrate that the effect of adding an Internet store is different from that of adding another physical store. Second, the model reflects the fact that consumers are heterogeneous in their preferences for using a physical store and for using an Internet channel. Third, the model captures the vertical strategic interactions between an upstream manufacturer and a downstream retailer, making it possible to analyze the channel structure issues discussed in this paper. Although numerous previous models capture this vertical dimension of marketing channels, none simultaneously incorporates the three characteristics reflected in this model. The analysis results are summarized in Table 1. When the new Internet channel is introduced by the existing physical retailer and the retailer coordinates both types of stores to maximize the joint profits from the both stores, retail prices increase due to a combination of the coordination of the retail prices and the wider market coverage. The quantity sold does not significantly increase despite the wider market coverage, because the excessively high retail prices alleviate the market coverage effect to a degree. Interestingly, the coordinated total retail profits are lower than the combined retail profits of two competing independent retailers. This implies that when a physical retailer opens an Internet channel, the retailers could be better off managing the two channels separately rather than coordinating them, unless they have the foresight of the manufacturer's pricing behavior. It is also found that the introduction of an Internet channel affects the power balance of the channel. The retail competition is strong when an independent Internet store joins a channel with an independent physical retailer. This implies that each retailer in this structure has weak channel power. Due to intense retail competition, the manufacturer uses its channel power to increase its wholesale price to extract more profits from the total channel profit. However, the retailers cannot increase retail prices accordingly because of the intense retail level competition, leading to lower channel power. In this case, consumer welfare increases due to the wider market coverage and lower retail prices caused by the retail competition. The model employed for this study is not designed to capture all the characteristics of the Internet channel. The theoretical model in this study can also be applied for any stores that are not geographically constrained such as TV home shopping or catalog sales via mail. The reasons the model in this study is names as "Internet" are as follows: first, the most representative example of the stores that are not geographically constrained is the Internet. Second, catalog sales usually determine the target markets using the pre-specified mailing lists. In this aspect, the model used in this study is closer to the Internet than catalog sales. However, it would be a desirable future research direction to mathematically and theoretically distinguish the core differences among the stores that are not geographically constrained. The model is simplified by a set of assumptions to obtain mathematical traceability. First, this study assumes the price is the only strategic tool for competition. In the real world, however, various marketing variables can be used for competition. Therefore, a more realistic model can be designed if a model incorporates other various marketing variables such as service levels or operation costs. Second, this study assumes the market with one monopoly manufacturer. Therefore, the results from this study should be carefully interpreted considering this limitation. Future research could extend this limitation by introducing manufacturer level competition. Finally, some of the results are drawn from the assumption that the monopoly manufacturer is the Stackelberg leader. Although this is a standard assumption among game theoretic studies of this kind, we could gain deeper understanding and generalize our findings beyond this assumption if the model is analyzed by different game rules.

• 한국유통학회지:유통연구
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• 제17권5호
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• pp.1-23
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• 2012

대기업과 중소기업의 갈등이 심화되고 있고 낙수효과 또한 제대로 작동하지 않고 있으며 사업조정제도의 실효성에 대한 논란이 이어지고 있는 가운데 중소기업의 사업영역을 보호하고 중소 대기업간 양극화를 해소하며 더불어 골목상권도 보호하기 위한 방안으로 도입된 것이 중소기업 적합업종 지정제도이다. 중소기업 적합업종의 추진현황은 제조업분야로 중소기업 적합업종 품목 중 234개 품목을 신청 접수 받아 실태조사 및 분석하여 조정협의체의 품목을 선정하였다. 서비스업분야에서의 적합업종 지정은 사회적 갈등이 있는 업종부터 지정할 계획인데, 중소기업 및 소상공인의 생업과 관련된 3개 대분류 서비스업종을 대상으로 우선 지정하고 추후 순차적으로 확대할 예정이다. 하지만 중소기업 적합업종 품목으로 선정될 경우에는 중소기업의 성장 동기가 저해될 우려가 있으며, 중소기업 적합업종 품목 지정은 소비자 후생 감소가 나타날 수 있다. 또한 사전적 규제로 작용할 소지가 높을 뿐만 아니라 경쟁을 제도적으로 제한함으로써 부작용이 나타날 우려가 있으며 FTA 체제의 주요 규정에 대한 위배 가능성도 있다. 뿐만아니라 대기업에 대한 역차별 요인이 충분히 반영되지 않고 있다는 점도 문제점으로 지적된다. 특히 중소기업 적합업종제도가 대기업의 주력분야와 관계없는 서비스업에 대한 진출 확대로 인해 중소기업 및 소상공인과의 갈등을 초래하고 있는 실정이므로 중소기업이나 중소상인의 보호를 위해서는 프랜차이즈시스템을 통해서 지역 중소기업을 발전시키고 마스터 프랜차이즈나 지역 프랜차이즈 시스템과 같은 선진 계약 방식을 도입하는 것이 필요하다. 하지만 이러한 방식은 기업들의 경쟁력과 운영방식을 한층 더 진일보 시켜 중소 프랜차이즈기업의 경쟁력 강화에 기여하는 효과도 있지만 부정적 측면이 더 많다고 볼 수 있다. 첫째, 지식경제부가 밝히고 있듯이, 프랜차이즈산업은 자영업자의 창업 성공률을 높여주고, 기존 자영업자를 조직화하여 규모의 경제를 통한 경쟁력 강화에 기여할 뿐만 아니라 다양한 서비스를 소비자에게 제공함으로써 내수시장을 확대하고, 일자리 창출에 기여하는 등 자영업자 경쟁력 제고와 서비스 산업 활성화를 위한 '유용한 수단'임을 강조하고 정부 서민안정 대책으로 밝힌바 있다. 이러한 관점에서 본다면, 프랜차이즈는 적합업종 제도의 취지에 부합하는 것이며 이에 반하는 것이 아님을 알 수 있다. 둘째, 적합업종으로 지정될 경우 국제적 경쟁력을 갖고 있는 국내 프랜차이즈 대기업들의 위축과 사기저하로 인하여 해외진출과 R&D, 식품안전에 대한 투자 감소와 더불어 국내 진출한 해외 기업들의 사업 확장에 부정적 영향을 끼칠 수 있다. 또한 국내 진출한 다국적 해외 프랜차이즈기업들과의 경쟁력을 확보하는 것이 무엇보다도 시급한 국내 프랜차이즈산업 현실에서 국제적 경쟁력 확보의 어려움뿐만 아니라 국내에 진출한 해외 프랜차이즈기업들과의 역차별이 발생할 수도 있다. 셋째, 중소기업 적합업종 품목 지정은 지금까지 제품을 사용해 왔던 소비자들의 선택의 기회를 제한함과 동시에 소비자의 후생을 감소시키는 부정적인 효과를 초래한다. 또한 중소기업 간의 역차별 문제를 발생시켜 소수 중소기업이 시장을 독점함으로써 소비자 선택의 폭이 줄어들 가능성이 있으므로 제품의 효용을 판단하는 역할은 국가가 아닌 소비자의 몫으로 남겨두어야 한다. 마지막으로는 프랜차이즈와 관련하여 이미 가맹사업법과 그리고 공정거래위원회의 모범거래기준 등의 시행으로 공정거래는 확보하고 있으므로 앞으로도 부족한 부분은 이들을 보완하여 진행하는 것이 바람직하다고 본다. 중소기업 적합업종 지정으로 이중삼중으로 규제하는 것은 오히려 프랜차이즈 분야에 과도한 제한이 될 것이다. 이제 국내 프랜차이즈산업에서도 한국의 문화를 전파하는 세계적 프랜차이즈기업이 성장할 수 있는 환경조성과 정부의 적극적인 지원이 필요하다. 따라서 프랜차이즈 기업의 성장 과정이나 배경을 고려하지 않고 현재 대기업이라는 이유만으로 이들에게 불이익을 주는 일은 없어야 한다. 프랜차이즈기업의 성장억제로 인하여 결국 가맹점의 매출감소는 물론이고 심지어는 폐업하는 가맹점의 숫자를 증가시키는 또 다른 문제를 발생시킬 수 있다는 것이다. 따라서 중소기업 적합업종제도가 대기업의 발목을 잡는 것이 아니라 소상공인과 중소기업의 경쟁력 제고와 동반성장을 목표로 하고 있는 만큼 대기업과 소상공인 및 중소기업이 상생과 협력을 바탕으로 거래관계를 지속하는 프랜차이즈 기업들이 포함되지 않도록 하는 것이 타당할 것이다.

• 한국가정과교육학회지
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• 제24권2호
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• pp.117-134
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• 2012

본 연구의 목적은 가정과교육에서 창의 인성 교육에 대한 가정과 교사의 관심 단계와 실행 수준, 그리고 실행 실태를 알아보는데 있다. 연구 자료는 전국의 중학교 가정과 교사를 대상으로 체계적 표집과 편의 표집을 하여 우편과 이메일을 통해 설문지를 배포하고 회수된 187부를 최종 분석에 사용하였다. 조사 도구는 주로 Hall(1987)이 개발한 혁신에 대한 교사의 관심도와 실행 수준에 대한 질문지를 수정 보완하여 사용하였고 그 외는 선행연구를 기초하여 개발하였으며 타당도와 신뢰도를 검증하였다. 자료는 SPSS/window(12.0) 프로그램을 이용하여 빈도, 백분율, 평균, 표준편차, t-test, ANOVA를 실시하였다. 본 연구를 통해 밝혀진 결과를 요약하면 다음과 같다. 첫째, 창의 인성 교육에 대한 가정과 교사의 관심 단계는 정보적 관심 단계(85.51)가 가장 높았으며 다음으로 개인적 관심 단계(85.18), 운영적 관심 단계(81.88), 지각적 관심 단계(82.15), 강화적 관심 단계(68.80), 협동적 관심 단계(61.97), 그리고 결과적 관심단계(59.76)의 순으로 나타났다. 둘째, 창의 인성 교육에 대한 가정과 교사의 실행 수준은 기계적 실행 수준(수준 3; 21.4%)이 가장 많았으며, 다음으로 탐색 수준(수준 1; 20.9%), 정교화 수준(수준 5; 17.1%), 사용하지 않는 수준(수준 0; 15.0%), 준비 수준(수준 2; 10.2%), 통합 수준(수준 6; 5.9%), 갱신 수준(수준 7; 4.8%), 일상화 수준(수준 4; 4.8%) 순이었다. 셋째, 창의 인성 교육에 대한 가정과 교사의 실행 실태를 조사한 결과, 반 이상의 가정과 교사(56.1%)는 가정과 수업에서 인성 교육에 치중하고 있으며, 31.0%의 교사는 창의 인성 교육을 모두 실행한다고 응답하였다. 반면 소수의 교사(6.4%)는 창의성 교육을 실행한다고 응답하였고 같은 수의 교사(6.4%)는 창의성과 인성 교육 어느 것도 실행하지 않는다고 응답하였다. 가정과 교사의 창의 인성 교육 요소의 실행 정도를 조사한 결과, 창의 인성 교육 요소의 실행은 평균은 5점 만점에서 3.76이었고 창의성 요소의 평균은 3.59, 인성 요소의 평균은 3.94로 보통보다 높았다. 창의성 교육 요소의 실행 정도에 대해서, 개방성/민감성(3.97)을 가장 많이 실행하였고 다음으로 문제해결능력(3.79), 호기심/흥미(3.73), 비판적 사고(3.68), 논리/분석적 사고(3.63), 문제발견능력(3.61), 독창성(3.57), 유추성(3.47), 유창성/융통성(3.46), 정교성(3.46), 상상력(3.37), 몰입/공감(3.37)의 순으로 실행하였다. 인성 교육 요소는 실천력(4.07)을 가장 많이 실행하였고, 다음으로 협동/배려/공정(4.06), 자기관리능력(4.04), 시민의식(4.04), 진로개발능력(4.03), 환경친화능력(3.95), 책임(감)/소유(3.94), 의사결정능력(3.89), 신뢰/정직/약속(3.88), 자율성(3.86), 글로벌역량(3.55)의 순으로 실행한 것으로 나타났다. 창의 인성 교육을 실행할 때 어려운 점으로, 많은 가정과 교사(64.71%)는 창의 인성 교육을 실행할 수업 자료가 부족한 데 있다고 하였으며, 40.11%의 교사는 창의 인성 교육의 연수 기회가 적은데 있다고 응답하였다. 한편 38.50%의 가정과 교사는 창의 인성 교육에 대한 평가 기준을 설정하거나 평가 도구를 개발하는 것이 어렵다고 응답하였고, 25.67%의 교사는 창의 인성 교육 방법을 모른다고 응답하였다. 창의 인성 교육 실행을 위해서 필요한 지원에 대해서, '창의 인성 교육과 관련된 학생들의 체험활동의 확대'(4.34), '창의성과 인성을 중시하는 가정과 수업 문화 조성'(4.29), '학생 발달 단계에 적합한 창의 인성 교육 내용'(4.27), '창의 인성 교육을 담당할 교수 인력 확보'(4.21), '창의 인성 교육의 개념과 가치 확립'(4.09), '지역 사회 기업 등과 연계한 창의 인성 교육 추진'(3.94)의 순으로 응답하였다.

• 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.