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OLAP 기술을 이용한 학업성취도 분석 시스템(SAAS)의 설계 및 구현
박미현(Mihyeon Park),김명(Myung Kim) 한국정보과학회 2001 정보과학회논문지 : 소프트웨어 및 응용 Vol.28 No.6
다각도로 분석된 학업 성취도를 신속하게 제공받는 학생들은 그렇지 않은 학생들에 비해 차후에 더 나은 학업 성과를 보인다. 그러나 현재의 한국 학교 현장에서 시행되고 있는 평가 방법은 이를 반영하지 못하고 있다. 본 연구에서는 이러한 서비스를 온라인으로 교사와 학생에게 제공하는 ‘학업성취도 분석시스템’인 SAAS를 설계하고 구현하였다. 이 시스템은 비즈니스 데이타를 다차원적으로 분석하여 부가가치를 창출하는데 쓰이는 신기술인 OLAP을 이용한다. 학생, 과목, 기간 차원에 대한 종합적 성취도 분석 결과가 산출되고, 이는 편리한 인터페이스를 통해 제공된다. 시스템의 성능향상을 위해서 분석결과의 부분적 사전연산 방식과 큐브의 청크 단위 저장 방식이 사용되었다. SAAS는 전국 단위 학생 성적 분석을 위해서도 쓰일 수 있는 정도로 성능면에서 확장성을 지니며, 제 7차 교육과정 개혁에도 적용이 가능하다. Students who are frequently and promptly informed of their current education achievement levels perform better than those who are not. However, current Korean school environments cannot afford to provide students with such services. In this study, we designed and implemented a student's achievement analysis system called SAAS. The system uses OLAP technology which is essential to extract desired data and to derive value-added information from an enterprise data warehouse. SAAS produces multidimensional analysis results on students, courses, and periods. Teachers and students can easily obtain desired analysis results through user-friendly interfaces. The performance of the system is enhanced by pre-computing some of the analysis results and using a chunk-based MOLAP cube storage scheme. The system is scalable to handle nationwide exams, and is extendable to embrace the 7th national curriculum revision.
식사대용식을 이용한 초저열량 식사요법이 20대 비만 여성들의 심리적 요인과 삶의 질에 미치는 효과
김지영(Kim Jiyoung),김상연(Kim Sangyeon),정경아(Jung Kyunga),장유경(Chang Yukyung),최형석(Choi Hyeongsuk),최승(Choi Sung),박미현(Park Mihyeon),홍성길(Hong Seonggil),황성주(Hwang Sungjo) 韓國營養學會 2007 Journal of Nutrition and Health Vol.40 No.7
This study was performed to investigate the effects of very low calorie diet (VLCD) using meal replacements that contain the wild grass extracts based on Samul-tang ingredients on psychological factors and quality of life in the obese women (BMI ≥ 25 ㎏/㎡) for four weeks. Seventy five women (20≤ age < 26) participated in this experiment. Subjects were randomly classified three groups: I) General diet group (GD group, n = 27) consumed 3 regular meals within 600 ㎉/day 2) Meal replacements group (MR group, n = 27) consumed 1 regular meal and 2 meal replacements within 600 ㎉/day 3) Herbal Meal replacements group (HMR group, n = 27) consumed 1 regular meal and 2 meal replacements within 600 kcal/day. Physical factors (weight, BMI, fat (%)) of the HMR group significantly decreased more than those of GD and MR groups. Moreover, binge eating habit and environmental factors (surrounding support, emotional reaction, expression of opinion) of the HMR group significantly decreased more than those of GD and MR groups. Psychological factor and quality of life were no significant differences among three groups during the experimental period, because both were significantly decreased in all groups after 4 weeks. Therefore, very low calorie diet using meal replacements that contain the wild grass extracts based on Samul-tang ingredients for 4 weeks was effective on improvement of psychological factor and quality of life as well as weight reduction in the obese preme-nopausal women.
산야초 추출물을 함유한 식사 대용식을 이용한 초저열량 식사요법이 성인 비만 여성들의 체중감량과 건강 개선에 미치는 영향
장유경(Yukyung Chang),김지영(Jiyoung Kim),김상연(Sangyeon Kim),최형석(Hyeongsuk Choi),최승(Sung Choi),박미현(Mihyeon Park),홍성길(Seonggil Hong),이무영(Moo-Young Lee),황성주(Sungjoo Hwang) 한국식품영양과학회 2005 한국식품영양과학회지 Vol.34 No.1
본 연구는 산야초 추출물이 함유된 식사대용식을 이용한 초저열량 식사요법의 체중감량과 건강개선에 미치는 효과를 평가하고자 실시되었다. 그 결과 식사대용식을 이용하여 초저열량 식사요법을 한 성인 비만여성들의 경우 일반 음식으로만 초저열량 식사요법을 한 성인 비만여성들보다 체중과 체지방율이 유의하게 감소하였음을 알 수 있었다. 건강관련 인자는 두 군간에 유의한 차이는 없었으나 산야초 추출물이 함유된 식사대용식을 섭취한 군내에서 식사중재 기간 동안 유의하게 지질 개선 효과가 있었다. 한편, 산야초 추출물이 함유된 식사대용식의 맛에 대한 기호도도 긍정적으로 평가되었다. 그러므로, 본 연구에서 사용된 산야초 추출물을 주성분으로 하여 제조된 식사대용식은 향후 임상에서 비만치료제로 응용함에 있어 크게 도움이 될 것으로 사료된다. 단, 앞으로 요요 현상의 가능성에 대한 보다 장기간에 걸친 임상연구가 이루어져야 할 것으로 사료된다. This study was performed to investigate the effects of very low calorie diet (VLCD) using meal replacements that contain the wild grass extracts that are consisted of mainly Samul-tang ingredients on weight reduction and health promotion in the obese women (BMI≥25㎏/㎡) for four weeks. Fifty six premenopausal women participated in this experiment. Each subject was either classified as part of the control group (C group, n=28) that consumed 3 regular meals a day or the meal replacement group (MR group, n=28) that consumed 1 regular meal and 2 meal replacements within 600 kcal/day. Anthropometric measurements, body composition, health related factors, and psychological factors were assessed before (the initial) and after (the 4^(th) week) the study. Obesity was significantly decreased after the diet intervention. Anthropometric measurements such as weight, waist and hip circumference, and BMI and body composition such as body fat, and fat mass were significantly decreased in all groups after the diet intervention. Anthropometric measurements and body composition of the MR group were significantly decreased more than those of the C group. Serum total cholesterol was significantly decreased in the MR groups but not in the C group and serum triglyceride concentration was significantly decreased in all groups after the diet intervention. All the biochemical measurements were within normal ranges after the diet intervention. Psychological factors such as stress and depression were significantly decreased in two groups after the diet intervention. Therefore, VLCD using meal replacements is very effective for weight reduction in the obese premenopausal women.