라이프로그 데이터의 모델링 및 질의 처리 기법

송인철,정지은,권태형,김병기,함덕민,김명호 한국정보과학회 2008 데이타베이스 연구 Vol.24 No.2

As the capacity of disks rapidly increases, it has now become possible to store the data for the entire lifetime of a person in a single disk. This has lead to the growth of researches on lifelog management, which records all the information related to everyday life and allows people to find the information they want easily later. In this paper, we propose an SQL-based query processing method for lifelog data. The proposed method models lifelogs as relations in a relational database and supports an efficient query processing by transforming lifelog queries into SQL queries and executing them. Compared to existing SQL-based methods, the proposed method not only supports keyword queries on lifelog metadata, but it also simplfies the form of relationship queries for easy construction and efficient processing of relationship queries. We also provide detailed descriptions about how to implement the proposed method in our lifelog management system. 하드 디스크 용량이 증가함에 따라 개인의 일생에 대한 정보를 모두 저장할 수 있는 가능성이 대두되면서 일상 생활에서 발생하는 모든 정보, 즉 라이프로그를 저장해 두었다가 나중에 손쉽게 다시 찾을 수 있게 해 주는 라이프로그 관리에 대한 연구가 활발히 이루어지고 있다. 본 논문에서는 SQL 기반 라이프로그 질의 처리 기법을 제안한다. 제안하는 기법은 라이프로그를 관계 데이터 모델로 모델링하고 라이프로 그 질의를 S Q L로 변환해 처리함으로써 질의 처리 성능을 높인다. 제안하는 기법은 기존의 SQL 기반 라이프로그 질의 처리 기법과 비교할 때, 라이프로그의 텍스트 내용뿐만 아니라 메타데이터에 대해서도 키워드 질의를 지원하고 라이프로그 사이 관계 정보에 기반한 질의인 관계 질의를 단순화해 관계 질의 작성 편의성과 관계 질의 처리 성능을 높인다. 본 논문에서는 제안하는 라이프로그 질의 처리 기법의 구현에 관해 상세하게 설명한다.

해상용 경유의 희석량에 따른 선박용 윤활유의 유변학적 거동연구

송인철,이영호,서문석,여영화,안수현,김대일 해양환경안전학회 2015 해양환경안전학회 학술발표대회 논문집 Vol.2015 No.11

저유황 연료유의 화학적 감식연구

송인철 해양환경안전학회 2022 해양환경안전학회 학술발표대회 논문집 Vol.2022 No.11

난소임신 2 례

송인철,권현옥,손병민,남철,서호성 대한산부인과학회 1994 Obstetrics & Gynecology Science Vol.37 No.6

저자들은 최근 본 병원 산부인과에서 난소임신 2레를 경험하였기에 문헌고찰과 함게 이를 보고하는 바이다. Ovarian pregnancy is a rare form of ectopic pregnancy. We have experienced two cases of ovarian pregnancy, which are presented with a brief review of the literature.

韓國에 있어서 肝吸蟲症 分布에 관한 疫學的 硏究

宋寅喆,李駿商,林漢鐘 고려대학교 의과대학 1983 고려대 의대 잡지 Vol.20 No.1

Korea, a total number of 19,758 stool specimens were collected from the inhabitants who lived in the basins of main 6 rivers, i.e. the Han River, the Gum River, the Nakdong River, the Mangyong River, the Yongsan River and the Seomjin River. The specimens were examined both by cellophane thick smear method and Stoll's egg counting technique during the period from March 1973 to October 1982. The distribution and infection rates were compared in those of river and non-river sides, and the epidemiological statrs was analysed statistically by the regression equations and catalytic curves with the results obtained from two endemic areas. The results are as follows: 1. High egg positive rates were revealed among the inhabitants in the areas of all above river basins, whereas low egg positive rates were obtained among the inhabitants in the areas apart from the riversides. However, in some areas which are not directly connected with the rivers, relatively high rates of Clonorchis infection were also observed. 2. The infection rates of Clonorchis sinensis by sex age were shown significantly different among the population in the most of these studied areas. The rates for males were significantly higher than that for females, and the rates were increased by the higher age groups up to 40 to 59 years old. However in the high endemic areas such as Kimhae the infection rates of both sexes were almost parallel and practically similar high rates revealed in all age groups for 20 to 60 years old. 3. The mean E.P.G. count of Clonorchis infection in the surveyed areas was found higher in the areas which shown as higher infection rates. The degree of the intensity of Clonorchis infection by E,P.G. counts was evenly distributed to heavy and very heavy infections as well light and moderate infections in the areas showed high infection rates. 4. The intensity of endemicity in all surveyed areas was compared with the regression equations calculated with the cumulative percentages of E.P.G. counts. 5. For the quantitative analysis of epidemiology of clonorchiasis in Kimhae and Pyongtrek areas, special type of simple catalytic model was applied to the age prevalence rates revealed through stool examination for Clonorchis eggs and intradermal test for the detection of positive reactors. 6. It was suggested that the two-stage catalytic was well fitted to the prevalince rates by sex and age in the egg positive cases in Kimhae and Pyongtaek areas, and the calculation lead to the equation y=1.042(e-^(0.003t)-e^(-0.074t), a=0.074〉b=0.003 in Kimhae area, and y=1.412(e^(-0.024t)-e^(-0.041t), a=0.024〈b=0.041 in Pyongtaed area. 7. In the high endemic area such as Kimhae, the tendency of familial aggregation was not recognized by statistical analysis. In this area, the mean E.P.C. obtained from same persons in 1973 were compared and descussed statistically.

무통분만의 임상적 연구

송인철,김세환,김성돈,권현옥,홍일 대한산부인과학회 1993 Obstetrics & Gynecology Science Vol.36 No.6

1992년 2월 1일부터 1992년 7월 31일까지 지방공사 부산의료원 산부인과에서 입원한 산모 중 지속적 경막외마취하에서 무통분만을 시도한 임산부 66명(초산부 51명, 경산부 15명)과 경막외마취를 시행하지 않은 임산부 66명을 비교분석하여 다음과 같은 결론을 얻었다. 1. 분만 제1기의 시간은 경막외마취를 시행한 군과 시행하지 않은 군의 초산부, 경산부 모두에서 유사하였고, 분만 제2기의 시간은 초산부에서 경막외 마취를 시행한 군이 시행하지 않은 군에 비해 의미있게 지연되었으나 경산부에서는 두 군간에 유의한 차이가 없었다. 2. 신생아의 Apgar score와 체중은 경막외마취를 시행한 군과 시행하지 않은 군간에 유의한 차이가 없었다. 3. 분만시 기계적 분만은 경막외마취를 시행한 초산부에서 경막외마취를 시행치 않은 초산부 에 비해 의미있게 증가하였고 경산부에서도 경막외마취를 시행한 군이 경막외마취를 시행하 지 않은 군에 비해 증가하였다. 4. 경막외마취를 시행함에 있어서 나타난 합병증은 요통 6.1%, 전신권율 4.5%, 저혈압 3.1%, 오심 및 구토 3.1%로 나타났으나 대부분 경미했다. 5. 경막외마취를 시행함으로서 무통의 효과는 초산부와 경산부에서는 거의 대부분이 만족하였다. This study is a clinical analysis of 66 cases(primiparas 51 cases, multiparas 15 cases) of continuous epidural analgesia for labor and delivery at Department of Obstetrics and Gynecology, Pusan Medical center during 6 months from Feb. 1, 1992 to Jul. 31, 1992. According to our experiences we obtained the following results; 1. The duration of the first stage of labor was similar between the epidural group and the control group in primiparas and multiparas, and that of the second stage of labor was significantly longer in the primiparous epidural group than the primiparous control group (p$lt;0.05), but did not differ significantly between the epidural group and the control group in the multiparas. 2. The apgar score and birth weight of the newborns were similar between the epidural group and control group in the primiparas and multiparas. 3. The frequency of instrumental delivery was increased in the primiparous epidural group than in the primiparous control group and also increased in the multiparous epidural group than in the multiparous control group. 4. The frequency of complications of epidural analgesia was in order backache(6.1%), shivering (4.5%), nausea and vomiting (3.1%), hypotension(3.1%), respectively. 5. In view of satisfactory degree during labor after epidural analgesia, most of primiparas and multiparas were excellent and good (22.9% versus 33.4%, 58.3% versus 40.0%, respectively).

TPM 을 통한 중소기업의 도약

송인철 대한산업공학회 1996 ie 매거진 Vol.3 No.2

6-Methylquinolinium chlorochromate and 6-Methylquinolinium dichromate에 의한 알코올류의 선택적 산화반응

양정성,이상배,박영조,송인철 慶南大學校 附設 基礎科學硏究所 1993 硏究論文集 Vol.5 No.-

New Cr(VI)-heterocyclic complexes, 6-methylquinolinium chorochromate(6-MQCC) and 6-methylquinolinium dichromate(6-MQDC) were synthesized by the reaction of 6-methylquinoline with chromium(VI) trioxide. Cr(VI)-heterocyclic complexes were non-hygroscopic and readily dissolved in water. Their structures were verified by IR spectra and elemental analysis. The abilities of 6-MQCC, 6-MQDC, for the oxidation of alcohols were examined in DMF, DMA and acetone. As a result, 6-MQCC, 6-MQDC, were found as efficient oxidizing agents for the conversion of benzyl, allyl, primary, and secondary alcohols(4-decanol) to the corresponding aldehydes or ketones.(80%-95%) 6-MQCC, 6-MQCC were found as efficient selective oxidizing agents benzyl and primary alcohols in the presence of secondary ones.

산업부산물[AI(OH)₃]을 활용한 콘크리트용 급결제의 응용

송인철,윤성원,송민영,우상욱,복정수,노재성 한국공업화학회 2003 한국공업화학회 연구논문 초록집 Vol.2003 No.1

The electrorheological(ER) effect of polypynole-coated silica particle ER suspensions

송인철,박동협,김영대 한국고분자학회 2000 한국고분자학회 학술대회 연구논문 초록집 Vol.2000 No.10