再使用을 위한 事例基盤 推論 모델에서 事例의 表現 및 索引

成百均 충주대학교 1997 한국교통대학교 논문집 Vol.32 No.2

Since software engineering is ,in itself,a knowledge-intensive activity, even greater productivity may be gained by using inteligent computer -based tools. Rule-based reasoning (RBR) systems have three problems which prompted a search for an alternative paradigm for problem for problem-solving concerns; namely,knowlege acquisition,memory ,and robustess. Case-based reasoning(CBR),which solves the problems of rule-based reasoning, is the technique of solving new problems by adapting solutions that were used to solve old problems. After briefly overviewing knowlege based software engineering, case-based reasoning and technical approaches to software reuse, I propose the case representation and indexing method which can effectively reuse software components impoemented by C++language in Case-Based Reasoning Model for software reuse. In conclusion,the proposed CBR model for software reuse has its advantages: This model can reuse efficiently software components compared with RBR systems, can process the ambiguous,queury, and learns from experience by remembering past mistakes for software reuse and accumulating cases in casebase.

정보기술혁신 과정에 있어 암묵지 분류와 공유방안

백상용 대한경영학회 2003 大韓經營學會誌 Vol.16 No.6

This study attempts to propose ways to manage and share tacit knowledge in the process of IT Innovation. In order to deal with tacit knowledge, first of all, a classification framework of tacit knowledge is developed based on the content of knowledge and the ontology of knowledge. Four types of tacit knowledge presented in the study are: technical-individual, technical-collective, cognitive-individual and cognitive-collective. Next, various types of tacit knowledge involved during the implementation process of IT innovation is explained such as Organizing Vision, Spirit and tacit IT knowledge. Classifying the tacit knowledge relevant to IT innovation according to the tacit knowledge framework, this study shows how to view the IT innovation process as learning and knowledge sharing process and how to manage and share each type of the tacit knowledge in implementing IT innovation.

통계자료 처리를 위한 요약테이블 생성 시스템의 설계

성백균 충주대 산업과학기술연구소 1998 産業科學論文集 Vol.6 No.-

Databases that are mainly used for statistical analysis are called statistical databases (SDB). A statistical database management system(SDBMS) may be defined as a database management system that provides capabilities to model, store, and manipulate data in a manner suitable for the needs of SDB users, and to apply statistical data analysis technique that range from simple summary statistics to advanced proceduses. Ths paper suveys the statistical database characteristics and proposes a design for a summary table production system(STPS). STPS creates summary database from raw database by application programs, extracts summary table from summary database by using meta data and format summary data in tabular form. STPS can produce efficiently summary table for user's statistical requirements compared with other systems.

개념과 CBR을 이용한 인터넷 검색 시스템의 설계

성백균 충주대 산업과학기술연구소 1999 産業科學論文集 Vol.7 No.1

Since it is now practically impossible for a Web user to find all her or his information interests through surfing, Artificial intelligent techniques seem to be useful concerning the internet search engine. This paper describes a design of internet search system using concept and CBR(case-based reasoning). First, After briefly surveying to internet search engine, concept-based search system and case-based reasoning, We propose a concept-based search system which can effectively search the index database using hyper-link information of web document. And we represent index database in terms of its concept graph, index information, data dictionary, user profile and case bases. We then propose a case-based reasoning approach for user's query processing. Although the designed ISS(Internet Search System) using Concept and case-based reasoning is not advanced, it can efficiently search the index database compared with other search systems, and it is much less expensive to construct index database than other approaches.

상행결장의 거대지방종으로 인한 대장중첩증 1예 : Case Report

백무준,김태윤,김성용,이문수,김창호,조무식 순천향의학연구소;Soonchunhyang Medical Research Institute 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2

Colonic lipoma is rare and mostly asymptomatic lesions; but as they become larger they may produce abdominal pain, constipation, diarrhea, hemorrhage, and intussusception. We report the case of a 61-year-old male who sufferd from nonspectific recurrent abdominal pain in the right upper and lower quadrants. Abdominal computed tomography (CT) revealed a constipating colonic tumor. The patient underwent an operative resection with primary anastomosis. His postoperative course was unremarkable, and he was discharged to home on postoperative day 11. Surgical pathologic examination comfirmed a large lipoma.

오존 및 오존 Precursors의 측정-국내ㆍ외 현황과 과제

백성옥,박상곤,김무식 영남대학교 환경문제연구소 2000 環境硏究 Vol.20 No.1

본 글에서는 최근 초미의 관심사로 등장하고 있는 광화학적 대기오염 관리측면에서 오존 및 오존 전구물질들의 종류와 이들 물질에 대한 측정 분야에 관련된 국내 · 외 현황에 대하여 고찰하였다. 또한 미국과 영국에서 행하여지고 있는 이들 물질의 관측망 운영상황을 조사하였으며, 나아가 향후 오존전구물질의 효과적인 측정을 위해 선결되어야 할 주요 과제들의 중요성과 구체적 대안을 제안하였다. In this paper, the environmental implications of ozone, ozone precursors, and bi-products formed from photochemical reactions in the atmosphere have been critically reviewed, with particular emphases on the monotoring and measurement of these compounds. The monitoring activities conducted in the USA and UK have been also reviewed, which may play an important role in designing the monitoring networks in Korea. Finally, future research requirements for the effective management of these chemicals were suggested.

Efficiency for extracting icariin from Epimedium koreanum Nakai by temperature and solvent variations

Baek,Hum-Young,Lee,Young-Sang 한국자원식물학회 2003 Plant Resources Vol.6 No.3

To improve industrial scale extraction method for extraction of icariin from Epimedium koreanum Nakai, the yields under different extracting conditions such as solvent, temperature, duration and solvent to plant material weight ratio were compared. Regarding extracting solution, highest extracts and icariin yield could be achieved when 10% EtOH was used. In case of plant material to extracting solvent ratio, no significant differences could be observed from 1/10 to 1/50, indicating 1/10 was the most efficient. Extracting temperature significantly affected extracts and icariin yields in that 90℃ increased the collected extracts and icariin contents up to 29.6% and 0.76%, respectively, compared to 27.2%, 0.33% at 70℃. The yield of extracts was less dependent upon extracting temperature compared to icariin yield. Regarding extraction time, 4 hr and 6 hr resulted in high extracts and icariin yield, respectively. We found extracting Epimedium koreanum Nakai in 10 times volume of 10% EtOH for 4 and 6 hr at 90℃ seem to be relatively efficient methods for extracts and icariin, respectively.

상완골 경부 골절 및 골절 탈구의 치료

백승일,정의섭 예수병원 1998 예수병원학술지 Vol.19 No.-

연속 매몰 봉합법의 다양한 임상적 적용: 비절개 이중검 성형술

백세민,최준,이용국,황소민,박성규 대한미용성형외과학회 1997 Archives of Aesthetic Plastic Surgery Vol.3 No.1

The double eyelid operation is one of the most common cosmetic surgery performed in orientals, and there are numerous studies about surgical procedures of that. In the case of appropriate candidates, the non-incision technique makes excellent cosmetic results, with the advantages of shorter operating time, less morbidity, less pain, no scarring and easy revision of shape. But, usually the non-incision technique is recommended in the cases with thin upper eyelid, small amount of orbital fat, less redundant skin of upper eyelid and in whom a wide fold is not desired so on. Therefore, the disadvantages of this method are that it cannot be applied to all patients. The postoperative complications are disappearance or faded fold, formation of cyst of lumps, asymmetry etc. and the incidence of these complications is slightly higher than those of the incisional method. In this study , the double eyelid operation using the continuous buried suture method was performed in 210 patients for formation of double eyelid from Jan. 1993 to Dec. 1995. In conclusion very good results can be obtained by the continuous buried suture method even in the cases of puffy upper eyelid. This method can make a double eyelid shape in the fashion the patient wants and can be a new indication for correction of unilateral double eyelid. This method is safe, satisfactory and take shorter postoperative recovery time and it can reduce the incidence of postoperative complications.

러시아 법인세의 건전성과 효율성에 관한 연구

성원용, 이백희 연세대학교 동서문제연구원 2000 유라시아연구 Vol.1 No.1

이 글은 체제전환기 러시아 법인세의 구조, 성격, 특징과 한계 등을 살펴보고, 이와 함께 법인세가 러시아 조세체계에서 차지하는 위치와 의미에 대해 재검토하는 것을 그 목적으로 한다. 체제전환 10년이 지났지만 러시아의 조세제도는 아직도 자기완결적인 체계를 갖지 못한 채 '형성' 단계에 머물러있고, 또 그 안에는 수없이 많은 결점들과 자기모순적인 성격이 내재하고 있다. 구체적으로 법인세의 경우 기업의 실제이윤에 대한 과세가 아니라 기업의 이윤을 비정상적으로 과도하게 징수하는 착취형 과세구조를 고 있다. '조세포탈 방지'라는 취지아래 만들어 놓은 법인세 선불지불규정, 정상적인 손금처리를 엄격하게 제한하는 갖가지 제한규정, 고정자산의 실제 내용연수를 무시한 강제적인 감가상각 규정 등이 그 예라 할 것이다. 기업 재무구조의 건전성과 효율성을 제고하고 기업의 현실을 반영하기 위해서는 보다 과감한 법인세 구조의 개혁이 요구된다. 무엇보다도 기업회계 방식을 수용하여 기업회계와 세무회계간의 차를 줄이고 이를 통해 기업의 납부비용과 세무당국의 행정비용을 축소해야 할 것이다. 법인세 자유화의 중요한 본질은 결코 세율 인하에 있는 것이 아니라 새로운 법인세 산정 방식에 있고, 따라서 제품의 생산 및 판매에 지출된 비용 인식, 감가상각 계산, 적자기업에 대한 관계 등에 새로운 접근이 절실하다.