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NCPI-MDS:수정된 DTD 간소화 절차를 통한 새로운 Constraints-Preserving Inlining 기법
안성철 ( Sung-chul Ahn ),김영웅 ( Young-ung Kim ) 한국정보처리학회 2005 한국정보처리학회 학술대회논문집 Vol.12 No.2
XML(eXtensible Markup Language)은 웹 상의 데이터를 표현하고, 교환하기 위한 표준 언어로써 XML 로 표현된 문서를 관계형 데이터베이스 관리시스템(RDBMS)에 저장하고 관리하는 기법에 대한 연구[1][2][3]가 활발히 진행되어 왔다. 이러한 연구들은 DTD(Document Type Definition)를 입력 받아 해당 DTD 에서 관계형 스키마를 추론하는 기법을 사용한다. 하지만, 기존의 연구들은 DTD 간소화 절차를 적용하기 때문에 DTD 내에서 추론될 수 있는 의미적인 부분들이 스키마 생성 시에 보존이 되지 못한다. 또한, 기존의 연구들은 XML 데이터의 내용(content)와 구조(structure) 정보만을 저장하는데 초점이 맞춰져 있기 때문에, XML 문서 저장 시 데이터의 무결성을 보장하기 위해 저장프로시져나 트리거를 이용해야 하는 번거로움이 생긴다. 본 논문에서는 [3]의 연구에서 제시한 Inlining 기법을 기반으로 기존의 Inlining 기법의 문제점인 DTD 에서 추론할 수 있는 의미적인 부분의 손실을 관계형 스키마로 보존하는 방법과 효율적인 릴레이션 생성을 위해 개선된 Inlining 기법을 제시한다.
시설 원예작물 생장예측모델을 위한 데이터 수집 시스템 설계사례
안성철 ( Sung-chul Ahn ),김희성 ( Hee-sung Kim ),권혜은 ( Hye-eun Kwon ) 한국정보처리학회 2012 한국정보처리학회 학술대회논문집 Vol.19 No.2
생장예측모델이란 작물의 생장 시스템 내에서 일어나는 기작이나 생산과정을 수식으로 묘사하는 것이다. 신뢰성 있는 생장예측모델을 만들기 위해서는 생장과 관련된 대량의 데이터가 필요하다. 본 논문에서는 IT와 농업을 융합한 시설 원예작물 생장예측모델을 위한 생장 및 생장환경 데이터 수집 시스템 설계사례를 소개하고자 한다.
김성준 ( Sung Joon Kim ),최일용 ( Il Yong Choi ),김태승 ( Tai Seung Kim ),안성철 ( Sung Chul Ahn ) 대한고관절학회 1991 Hip and Pelvis Vol.3 No.1
From January 1983 to December 1990, Sixty-six patients who have tumors around the hip joint and were confirmed their diagnosis by histopathological study have been reviewed and the following results were obtained. 1. There were forty-three cases(65.2%) of benign tumor and twenty-three(34.8%) malignant tumor. 2. Of the sixty-six patient, thirty-four were male and thirty-two female. In benign tumor, they shows relatively even distribution in age but in malignant tumors, thirteen cases(56.5%) were in the 5th and 6th decade. 3. Among the benign tumors, the soft tissue origin was nineteen cases and bony origin twenty-four. The most common tumor in soft tissue origin was lipoma (six cases(31.6%)) and bony origin unicameral bone cyst (nine cases(37.5%)). In malig- nent tumors. the metastatic carcinoma was most common (twelve cases(52.5%)) and the liver was most common primary site of cancer. 4. The most common chief complaint was mass (fourteen cases(32.6%)) in benign tumor and painful mass (eight(34.8%)) in malignant tumor. The duration of symptom ranged from 1 day to 33 years with an average of 3.6 years in benign tumor and from 2 weeks to 5 years (average 6 months) in malignant tumor. 5. Most of the benign tumors were treated by local excision, and malignant tumors were treated by wide excision, chemotherapy, radiation therapy, bipolar hemiarthroplasty, and tumor prosthesis or combination of them.
최일용 ( Il Yong Choi ),황건성 ( Kuhn Sung Whang ),안성철 ( Sung Chul Ahn ),김영환 ( Young Hwan Kim ) 대한류마티스학회 1994 대한류마티스학회지 Vol.1 No.2
Objective: The gout characterized by hyperuricemia is a disorder of purine metabolism and clinical manifestations were seen such as arthritis and tophi in the subcutaneous tissues. But clinical symptoms were not correlated with the serum level of uric acid. So we analysis of clinical orthopaedic manifestations and associated factors in gout. Methods: We have reviewed the medical records, radiography and clinical results of forty six patients admitted at out department between july 1981 and July 1990. Results and Summary: 1) OF the forty-six patient, 44 cases (95.6%) were male and two female. The age at initial attack was 47.7 year-old in average, from 13 to 66 year-old. 2) Hyperuricemia was associated with obesity in 17 cases (40%), and hyper-tension in 16 cases (35%). 3) The level of uric acid in serum was 9.7mg/% in average on admission and 5.9mg/% on discharge after treated with allopurinol about 2 weeks. 4) The first metatarsophalangeal joint was involved in 28 cases (60.9%) and the ankle joint in 12 cases. Tophus was observed in 14 cases(30.4%) and they were surgically treated in 10 cases.