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남철기(Chul-Ki Nam),배재학(Jae-Hak J. Bae) 한국정보과학회 2002 한국정보과학회 학술발표논문집 Vol.29 No.1A
업무규칙은 선언적인 방법으로 업무정책을 표현하고 업무조항을 정의한다. 또한 업무프로세스를 정의하고 프로세스가 수행되는 과정에 제약을 가한다. 본 논문에서는 능동문서 처리 프레임워크를 구현하였다. 즉, 사무문서에 함축되어 있는 업무규칙을 어플리케이션 로직과 분리하여 생각하였고, 업무규칙은 Prolog로 명시적으로 표현하였다. 이 Prolog 규칙은 논리프로그램 추론엔진에서 수행가능하고, 이종의 규칙기반 어플리케이션에서 사용할 수 있도록 XML 문서로 변환하였다. 이렇게 문서의 데이터와 규칙을 저장한 XML 문서는 규칙기반의 시스템과 워크플로우 관리시스템(WFMS) 환경에서 처리된다.
남철기(Chul-Ki Nam),배재학(Jae-Hak Bae),장길상(Gill-Sang Jang) 한국정보과학회 2003 정보과학회논문지 : 소프트웨어 및 응용 Vol.30 No.3·4
The web is an important source of information and most of Web applications are based on form documents in HTML. These HTML-based form documents only play a role as user interfaces, and they do not involve the procedures or rules of business process which form document designers assume. However, form documents imply methods for treating documents, and these embedded procedural knowledge can be utilized actively in automation of business process. In this respect, we investigate the activeness of documents with cognitive science to automate business processes based on form documents. Through this, we have a new concept and applicability of active documents. Our active documents include business rules and declarative knowledge to support the automation of document processing. Also, we propose a processing framework for the active documents. The framework has two phases: build-time and run-time. In order to demonstrate the usefulness of the proposed framework, a prototype called ActiveForm is designed and implemented for requisition processing of an Internet Procurement system. The result shows that our approach which explicitly represent knowledge of form designer in active documents with Prolog and processing them in an inference engine can enhance the intelligence of Internet applications. 웹은 중요한 정보원천이며, 대부분의 웹 응용프로그램은 HTML로 작성된 서식문서를 기반으로 한다. 이러한 HTML 기반의 서식문서는 사용자 인터페이스를 제공하는 역할을 할 뿐, 문서서식 설계자가 지향하는 업무처리 절차나 로직을 내포하지는 않는다. 그러나 서식문서에는 그것에 대한 처리방법이 함축되어 있고, 이렇게 내재된 절차적 지식을 업무처리 과정의 자동화에 적극적으로 활용할 수 있다. 이에, 본 논문에서는 서식문서에 기반한 업무처리 절차를 자동화시키기 위해 인지과학적인 측면에서 문서의 능동성을 파악하였다. 이를 통해 능동문서(Active Documents)에 대한 새로운 개념과 그 적용 가능성을 제시하고자 한다. 이 능동문서는 문서에 함축되어 있는 업무규칙과 문서처리의 자동화를 지원하기 위한 선언적 지식을 문서 자체에 내포하고 있다. 또한, 본 논문에서는 제시된 능동문서를 처리하기 위한 프레임워크를 제안한다. 제안된 프레임워크는 크게 생성단계와 실행단계로 구성된다. 본 논문에서 제안한 프레임워크의 유용성을 보이기 위해, 인터넷 구매 시스템의 구매 요청서 처리에 능동문서를 적용한 ActiveForm이라는 원형시스템을 설계하고 구현하였다. 그 결과, 본 논문은 서식설계자의 지식이 Prolog로 명시적으로 표현되어 있는 능동문서를 추론엔진에서 처리함으로써 인터넷 응용프로그램의 지능화에 기여할 수 있음을 확인하였다.
폐경 전후 여성의 신체특성 및 산과력과 골 밀도간의 관련성
남철현 ( Chul-hyun Nam ),배성욱 ( Seong-wook Bae ),김복용 ( Bok-yong Kim ) 한국모자보건학회 2002 한국모자보건학회지 Vol.6 No.2
Objectives : This study was conducted to evaluate the prevalence rate of osteoporosis according to age and the effect of physical characteristics and obstetrical history on bone mineral density in pre- and postmenopausal women in Korea. Methods : The subjects were 961 premenopausal and 1.167 postmenopausal women who had been examined in health promotion center of Yeungnam University Hospital in Daegu city from January, 1999 to January, 2001. The test for bone mineral density, and body composition were conducted. Results : The results of this study were as follows; 1. The prevalence rates of reduced bone mineral density and osteoporosis in premenopausal women were 23.8% and 1.6%, respectively. However, these values were increased to 46.1% and 28.1% in postmenopausal women. 2. The age was most important predictive factor for bone mineral density in pre- and postmenopausal women. The bone mineral density was peaked at the thirties and declined sharply around fifty years old and declined slightly after the seventies, which revealed a typical cubic equation. The loss of bone mineral density was started at forty years old. 3. The body weight and height were important predictive factors for bone mineral density. The effects of age, body weight, and height on bone mineral density were 39%. The body weight was correlated statistically significantly with bone mineral density in pre- and postmenopausal women. The higher body mass index (BMI), the greater value of bone mineral density was revealed in pre- and postmenopausal women. 4. In multiple regression analysis, age, body weight, height showed statistically significant inverse correlation with bone mineral density. Conclusions : These results suggested that to prevent osteoporosis, the systemized program including physical condition for promoting anti-osteoporotic factor have to be developed and apply from the thirties whom have maximal bone mineral density.
남철현(Chul-Hyun Nam),허도은(Do-Eun Heo),윤승일(Seung-Il Yun),이상일(Sang-Il lee),이석순(Seok-Soon Lee) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.5
The Purpose of this study is to develope a machine for molding a loess brick. In modern civilized social. many research and development have been progressed a traditional things by proof of excellency for those. There are many machines for molding a loess brick. But it is e Impossible to transfer them other place. iii are over the machines are non-efficiency and too expensive. Therefore. the machine which is combined with mobility and automation is required. This machine is separated into a molding part and a hydraulic part. which make the machine transferability to be convenient. For the product improvement. it is designed that the system molds two bricks during one cycle and have Programmable Logic Controller(PLC) in oder to operate automaticall. This machine compresses loess into the mold using hydraulic power . Above all things it can reduce a electric power in the motor using non-loaded manifold block and relief valve. It is expected that the machine can curtail the construction time.
浸漬型 生物勝反廳權에 依한 負倚變動에서의 基賢徐去에 關한 硏究
南喆鉉(Chul Hyun Nam),朴鍾雄(Jong Woong Park) 한국환경보건학회 1987 한국환경보건학회지 Vol.13 No.2
The objective of this study is to review the basic theorìes related substrate removal in wastewater f10w variations using submerged biofi1m reactor. An aerated biofilm reactor is that in which inf1uent organic substrates are aerobically oxidized by the microorganisms of biofilm grown on the surface of submerged media. No sludge is returned, and oxygen is supplied by diffusers. Three types of aerated biofilm reactor are one stage-central aeration, one stageupf10w aeration and two stage-sìde aeration. The orders of substrate removal capacity in wastewater f10w variations showed two stage-side aeration, one stage-upf1ow aeration and one stage-central aeration. The phenonmenon of nonclosing volid in upf10w aeration type was superior to these in central-side aeration type. Attached biofilm masses in case of upf1ow, side and central aeration reactor were 1.0mg/cm2 , 4.1 mgfcm2 and 0.93 mgfcm2 , respectively. Yield coefficient for biofilm was 0.31 to 0.48. Especially, removal efficiency can be increased remarkably according to the number of biofilm reactor and the packed condition of media.
남철기(Chul-Ki Nam),양재군(Jae-Gun Yang),배재학(Jae-Hak J. Bae) 한국정보과학회 2001 한국정보과학회 학술발표논문집 Vol.28 No.2Ⅲ
본 논문에서는 XML 문서에 문서검증을 위한 로직을 추가하였다. 로직을 기술하기 위해 규칙 표현에 효과적인 Prolog를 이용하였고 검증 규칙을 XML 문서로 변환하여 원래의 XML 문서에 포함시켰다. XML 문서검증에 관한 연구가 기존에는 주로 문서 구조의 검증에 치중한 반면 본 논문은 XML 엘리먼트의 데이터 값 검증에 역점을 두었다. 또한 폼 값의 검증을 XML과 Prolog를 이용하여 검증함으로써 스크립트언어를 사용해 검증하는 일반적인 방법을 개선하였다.