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사례 기반 추론에 의한 Data Warehouse 설계
김성규 안양대학교 1997 논문집 Vol.17 No.-
본 논문에서는 사례 기반 추론 시스템을 이용한 Data Warehouse 설계 방법에 대해 알아본다. Data Warehouse 의 주제 지향적인 데이터 접근 방식은 먼저 각 지역에 존재하는 여러 데이터베이스의 지역 개념 스키마를 하나의 전역적인 개념 스키마로의 토합을 의미한다. 사례 기반 추론 시스템을 이용하여 전역적인 개념 스키마로 통합하는 방법과 이 시스템을 적용시키기 위한 사례 표현법, 문제 해결을 위한 적절한 사례 추출법과 적응 법을 제시한다.
안철민,이한식,조광현,황태식,김성규 대한응급의학회 1995 대한응급의학회지 Vol.6 No.2
Pulse oximetry is a noninvasive method of measuring blood oxygen saturation even before changes to the cardiopulmonary functions become apparent clinically. Therefore it has been widely excepted in many disciplines as a standard patient monitoring equipment. But its accuracy has been argued at low oxygen saturation levels. To determine the accuracy of the pulse oximetry in the emergency department where the patients presenting with respiratory difficulty are expected to have low oxygen saturation levels. Prospective, cross-sectional, paired measurements of oxygen saturation by two different pulse oxineters(SpO2) against oxygen saturation of arterial blood gas analysis(SaO2) was performed from May 1994 to September 1995 at two different university hospitals. Two pulse oxineters each with its digital probe were applied to the patient for the measurement of SpO2 simultaneously and arterial blood gas was drawn for analysis(ABGA) at the same time to measure SaO2. 98 patients who met the criteria mostly consisted of cardiopulmonary patients. There were no significant differences between mean SpO2(88.1±11.4, 88.2±10.0) of the two pulse oximeters and mean SaO2(88.7±11.4) from the arterial blood gas analysis(p=NS). Strong correlations were found(r=.80). But the regression declined as SaO2 decreased especially SaO2 < 90%. The pulse oximetry is potentially useful in patients with clinical signs of acute hypoxemia and patients receiving interventions that may produce acute hypoxemia, because of their ability to continuously monitor the oxygen saturation. But pulse oximetry along cannot identify the degree of hypoxemia or severity of distress. Therefore patients complaining of respiratory difficulty in an emergengy department, history and physical examination must be performed with pulse oximeter as a guide while backing it up with ABGA.