• 한국자동차공학회논문집
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• 제8권3호
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• pp.98-109
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• 2000

A new PC-based Engine Control system (ECS) is developed using an object oriented programming method. This system provides more convenient environment for engine tests, easier user interface and extended functions. A Windows-based ECS software is developed with class, and the class structure is built on encapsulation and abstraction. The closed-loop engine control scheme can be easily constructed by using dynamic link library and multitasking. This means that a user can perform desired experiments without clear knowledge of the hardware structure of the ECS. Also this system allows a user to individually control the ignition and fuel injection for each cylinder in a simple manner such as through a keyboard/mouse or in a real-time operation from a closed-loop control program.

• 한국지능시스템학회:학술대회논문집
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• 한국지능시스템학회 2008년도 춘계학술대회 학술발표회 논문집
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• pp.79-82
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• 2008

웹크롤러는 웹페이지 내의 URL링크를 추적하여 다른 문서를 수집한다. 국내의 상당수 웹사이트는 웹 표준에 맞지 않는 링크방식으로 웹문서를 연결하고 있다. 일반적인 웹크롤러는 링크의 비표준적인 사용을 가정하지 않기 때문에 이러한 문서는 수집할 수 없다. 비표준적인 링크가 가능한 것은 사용자의 실수에 강인한 마크업 언어인 HTML에 자바스크립트 기능이 추가되면서 자바스크립트의 변칙적인 사용이 허용되었기 때문이다. 본 논문에서는 230여개의 웹사이트를 조사하여 기존 웹크롤러에서 해결하지 못한 링크 추출 문제를 찾아내고, 이를 수집하기 위한 알고리즘을 제안한다. 또한 자바스크립트 문제 해결을 위한 무거운 자바스크립트 엔진을 대신하여 필요한 기능만으로 구성된 모듈을 사용함으로써 효율적인 문서 수집기 모델을 제안한다.

• 한국경영과학회지
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• 제16권2호
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• pp.33-33
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• 1991

The management of enterprise knowledge has been increasingly important because knowledge emerges as the new basis of competition in postcapitalist society. One of the key issues in knowledge management is to put knowledge into a repository where it can be easily stored, reused, and recreated. This paper proposes a model repository and the corresponding knowledge management framework. The emphases of model repository is on abstraction knowledge in the form of schematic models. Two major benefits are model independence and model integration. A metaschema is constructed according to six conceptual components: separate unit, external link, internal link, separate unite descriptor, link descriptor, and composite descriptor, which can be applied for a variety of models. A prototype system with a case illustrates the practical usefulness of model repository for knowledge management

• 경영과학
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• 제16권2호
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• pp.33-49
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• 1999

The management of enterprise knowledge has been increasingly important because knowledge emerges as the new basis of competition in postcapitalist society. One of the key issues in knowledge management is to put knowledge into a repository where it can be easily stored, reused, and recreated. This paper proposes a model repository and the corresponding knowledge management framework. The emphases of model repository is on abstraction knowledge in the form of schematic models. Two major benefits are model independence and model integration. A metaschema is constructed according to six conceptual components: separate unit, external link, internal link, separate unite descriptor, link descriptor, and composite descriptor, which can be applied for a variety of models. A prototype system with a case illustrates the practical usefulness of model repository for knowledge management.

• Journal of information and communication convergence engineering
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• 제11권3호
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• pp.167-172
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• 2013

Recently, mobile communication systems are suffering from exponentially increasing data traffic. As a promising solution to the increase in data traffic, a coordinated multi-point transmission and reception (CoMP) scheme has been proposed. Although a great deal of research has been done on this new technology, the performance of mobile communication systems with CoMP has not been evaluated properly in a typical indoor environment. To address this, we have developed a system-level simulator and evaluated the performance of mobile communication systems with CoMP. Unlike previous works, we have used an actual antenna pattern in our simulator and link-level results are properly taken into account through link-level abstraction. By using a system-level simulator, we have evaluated the performance of mobile communication systems with CoMP in an indoor environment and found that unlike an outdoor cellular environment, CoMP may not improve the performance of overall mobile communication systems in an indoor environment.

• 한국응용과학기술학회지
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• 제30권1호
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• pp.166-172
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• 2013

본 연구는 압연공정에서 발생하는 폐수 중에 함유되어있는 난분해성 COD 물질을 $80{\mu}m$ 두께의 극세사 형태로 제조된 Cu-Zn 금속합금의 산화 작용으로 인하여 발생하는 OH 라디칼을 이용하여 처리하는 방법에 관한 기초 연구이다. OH 라디칼은 유기화합물(RH) 속에 포함된 수소를 수소추출반응(H Abstraction) 또는 탄소와 탄소(C-C)의 불포화 결합에 첨가됨으로써 빠르고 비 선택적인 반응을 수행하는 것으로 알려진 것처럼 난 분해성 유기화합물의 처리에 효과적인 것으로 나타났다. 금속합금 반응 물질은 극세사 형태로 표면적이 넓어서 1회 처리만으로도 수용액의 pH를 평형에 도달하게 하여서 반응 효율성이 높은 것으로 나타났다. COD처리 효율은 중성 pH에 가까운 pH 7, pH 6에서 최고치를 보였으며 산성분위기인 pH 5이하 및 알칼리성 분위기인 pH 8이상에서는 낮은 효율을 보였다. 실제 압연 폐수의 응집 침전을 이용한 COD 처리에서도 redox 반응장치의 유무에 따라 2배 이상의 처리효율의 차이를 보였다.

• International Journal of Computer Science & Network Security
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• 제21권3호
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• pp.287-294
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• 2021

Modern small farms are important link components in the structure of the world agro-industrial complex. It ensures the food and nutritional sustainability of the country exclusively at the local regional level. The purpose of the research is to examine the role of farming in ensuring nutritional security and food stability based on the analysis of the Food Sustainability Index (FSI). Research methods: modeling, abstraction, analogy, analysis, synthesis, formalization, logical abstraction, theoretical cognition, systematization and classification, abstract-logical, etc. Results. Having analyzed the Food Sustainability Index for 2018, it has been established that there is a lack of a clear relationship between the pace of economic development and the level of food and nutritional sustainability. In addition, this study has identified the countries with the largest number of small farms, as well as the number of farms within the region. The correlation between the size of the farm and the area of agricultural land that it cultivates has been determined. The problems faced by small farms in the process of their activity have been analyzed. The programs implemented in the field of agro-industrial complex development by international profile institutions have been systematized. Particularly, the regional structure of agricultural development programs under the guidance of IFAD is defined, as well as the areas to which they are directed. Specific measures taken by governments to stimulate the development of small farms have been outlined. Reasonable conclusions have been formed based on the study. The direction of future research is seen in the assessment of the export potential of small farms in terms of range, volume of export deliveries and geographical direction of movement of their products.

• 정보기술과데이타베이스저널
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• 제2권2호
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• pp.25-34
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• 1995

본 논문에서는 멀티미디어 처리를 제공하는 객체지향 데이타베이스 시스템에 관한 기능 시험도구의 설계 전략에 대하여 설명한다. 시험도구의 설계시 시험 데이터베이스의 스키마는 추상화, 상속, 집단화(aggregation) 등의 객체 지향적인 성질을 시험할 수 있도록 하며, 포함되는 인스턴스는 사용자의 이해를 돕기 위해 의미있는 값으로 인위적으로 구성한다. 기능 시험항목은 경계값 분석, 동치 분할 등의 기법을 이용한 블랙박스 시험방법으로 작성되며, 각 시험항목은 서로 독립적으로 구현되어 실행 순서에 영향받지 않도록 한다. 시험항목이 수행된 후에는 성공적인 수행, 제외된 기능, 올바르지 않은 수행 등의 시험결과에 대한 목록이 출력되도록 한다. 이러한 설계 전략에 의하여 UniSQL/X를 위한 기능 시험도구를 C++로 개발하였다. 시험도구의 수행은 스키마의 생성, 인스턴스 삽입, 시험프로그램의 컴파일과 링크, 시험프로그램 실행 및 결과확인, 시험 데이타베이스 제거 순으로 이루어진다. 본 시험도구는 UniSQL/C++의 멤버 함수에 대응하는 90여개의 시험프로그램을 이용하여 140여개의 시험항목을 제공한다.

• 한국도서관정보학회지
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• 제8권
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• pp.69-96
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• 1981

We all know that we can not keep a proper social life without language. Yet language is so much a part of our environment that we hardly realize it is there. The purpose of this study is to provide an understanding of the linguistical aspect of communication process in order to carry out a successful human relations in the operation of libraries. Human development rests upon man's capacity to digest large quantities of knowledge and it is language which allows facts to be communicated, stored, and disseminated. An attempt was made in this study to illustrate the elementary meaning-of-words aspect of communication. In order to share the most commonly agreed meanings in interpersonal communication, a careful study of semantic noises is important. In a constant struggle to meet client needs, staff and administrators, librarian must understand communication dialogues, their messages and be able to read all level of meanings. In order to perform a successful function of the librarian, to act as a link-man or communicator and to cope with its ever growing information, it is suggested that the deep understanding of the following linguistical aspect of communication elements is essential. 1. Characteristics of Language: (1) Words have different meanings to different people. (2) Words vary in the degree of abstraction. (3) Language is incomplete by its nature. (4) Language reflects not only the personality of the individual but also the culture of man's society. 2. Noises in transmitting meanings: (1) Mechanical or Technical noises. (2) Semantic Noises (3) Noises caused by the psychological factors a. attention b. perception, sensation, cognition and perceptual field. 3. Linguistic Stratum Languages differ considerably in vocabulary by the physical and cultural environment setting as well as situation of individual living. There are seven different language stratum which reflects different region, sex, age, profession, special social stratum, academic and tabooed words.

• 한국실내디자인학회논문집
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• 제13권5호
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• pp.133-142
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• 2004

Recently, the Korean medical system changed with diversification & specialization and the field of medical service is also specialized in these days. And healing environment is proposed as a general concept in the hospital architecture. There is a trend that a establishment of women's hospital is increasing as specialized type. In difference from general hospital, they are providing specialized and integrated services in response to the women's disease and demand. Particularly, Outpatient department space in women's hospital has been changed in terms of area, shape and program. However, there used to be not enough research efforts of responding these changes. This study includes the Outpatient department of s women's hospital in the form of small and medium sized building over a certain level in Korea. And the methods of the study adopted the theoric examination based concept and features of women's hospital, the abstraction of distinctions in the Outpatient department through the analysis of the drawing, and the analysis of distinctions in the Outpatient department of women's hospital with the structural space classified and the analysis of space relation. Therefore, the purpose of this is to study investigates and analyzes the spatial characteristics of the Outpatient department space in women's hospital through a analysis of case study. To conclude, the space composition can be classified into the entry space, the clinic space for patients, the support space of patients' check-up, the reception and waiting space, the rest and convenience space, and the link space in the Outpatient department of women's hospital. The level space can account for the waiting space type, the clinic office type, the type based on the relation between the waiting room and the clinic office with its features. As a result, the results will be applied for the planning & design for the future women's hospital.