• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2010년도 추계 학술발표회
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• pp.712-721
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• 2010

Our country is composed of about 70% mountain district. Therefore the tunnel and the bridge are used plentifully in the road. The bridge the establishment location of the pier according to ground condition and the route is executed from various condition. this study leads and stability investigation and reinforcement instance there is a goal which presents an example about investigation.

• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 2007년도 춘계학술대회 논문집
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• pp.166-171
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• 2007

Like today there is to a world-wide anger time where the culture flow is active and the life style which it follows in soul re-and economic growth of information anger and brother-in-law both culture of the world and consuming pattern against the eating and drinking space of the people are demanding the change which is various. Per the Korean-style food space composition quality instance - investigation analysis it leads and per the Korean-style food store plan hour it presents the standard of the space composition it will be able to refer with per the Korean-style food space composition plan hour efficient and rational there is the objective of the place where it provides a fundamental data to direction set of new plan.

• 한국인공지능학회지
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• 제1권1호
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• pp.1-3
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• 2013

This study suggested ways to control UML diagram and to make design of database and to retrieve diagram information by giving questions. The study classified elements of the diagram. For instance, class diagram was made of classes, and class was done of class name and attribute operator. The elements were transformed to be database table having basic key and foreign key information. The ways suggested had advantages of users' sharing of model information and reuse of the model. This study investigated cost saving, time saving and UML model construction by database. We had designed integrated and relation database that could save and manage UML diagram, and suggested retrieval. For instance, we classified class diagram into elements to make tables and kept relation of each element by using not only basic key of relation database but also foreign key information. We made database of modeling depending upon methods to give users convenience.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2002년도 추계학술발표논문집 (하)
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• pp.2179-2182
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• 2002

EJB(Enterprise Java Beans)는 비즈니스 로직을 컴포넌트 형태로 작성하여 재 사용성을 향상시킨 서버 측 컴포넌트 모델로서, J2EE(Java2 Enterprise Edition)의 핵심이다. EJB는 컴포넌트를 특성에 따라 일반적인 비즈니스 로직을 나타내는 세션 빈(Session Bean), 데이터베이스에 저장된 데이터를 나타내는 엔터티 빈(Entity Bean) 그리고 JMS 메시지를 처리하는 메시지 드리븐 빈(Message-driven Bean)으로 구분한다. 이러한 빈들은 EJB 서버에 의해 관리된다. 본 논문에서는 EJB 서버에서 EJB 빈의 라이프 싸이클을 관리해주는 인스턴스 관리자(Instance Manager)에 대해 논의한다.

• The Journal of the Acoustical Society of Korea
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• 제20권4E호
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• pp.31-38
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• 2001

A large-scale synthesis database for a unit selection based synthesis method usually retains redundant synthesis unit instances, which are useless to the synthetic speech quality. In this paper, to eliminate those instances from the synthesis database, we proposed a new pruning method called weighted vector quantization (WVQ). The WVQ reflects relative importance of each synthesis unit instance when clustering the similar instances using vector quantization (VQ) technique. The proposed method was compared with two conventional pruning methods through the objective and subjective evaluations of the synthetic speech quality: one to simply limit maximum number of instance, and the other based on normal VQ-based clustering. The proposed method showed the best performance under 50% reduction rates. Over 50% of reduction rates, the synthetic speech quality is not seriously but perceptibly degraded. Using the proposed method, the synthesis database can be efficiently reduced without serious degradation of the synthetic speech quality.

• 전력전자학회:학술대회논문집
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• 전력전자학회 1999년도 전력전자학술대회 논문집
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• pp.663-666
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• 1999

This paper describes a three-phase converter with high power factor using a scheme of discontinuous current mode(DCM). The proposed system can replace the conventional diode bridge with step-up chopper which is used as a converter for adjustable speed drive. In this system, the current of reactor is zero at turn-on instance because of operation in DCM, while the switch turns off at the instance of maximum current. A soft-switching scheme with lossless snubber was proposed. Therefore, a zero-voltage switching at turn off can be achived by lossless snubber and zero-current switching at turn on can be obtained by operating under DCM. A theoretical analysis and computer simulations with PSpice were done to verify the operation of the proposed system. Also a prototype of hardware system was built and tested for verifying the feasibility of proposed system.

• ETRI Journal
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• 제28권1호
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• pp.77-83
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• 2006

In order to improve the accuracy of cell selection in heterogeneous cellular systems, this paper proposes a fuzzy multiple-objective decision-based cell selection (FMDCS) strategy. Since heterogeneous cellular systems have different access technologies and multiple traffic classes, the strategy adopts cell type, data rate, coverage, transmission delay, and call arrival rate as evaluation indices, and uses different weight vectors according to the traffic classes of the mobile host. Then, a fuzzy multiple-objective decision algorithm is applied to select the optimal cell from all candidates. This paper also gives an instance analysis and simulation. The instance analysis shows FMDCS makes different selections for different traffic classes. Simulation results of the after-handoff quality-of-service (QoS) show the selected cell can provide MH optimal service.

• 한국항행학회논문지
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• 제18권1호
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• pp.74-77
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• 2014

본 논문은 사물 지능 통신 환경에서 미디어 다중 채널을 위한 오류 제어에 대해서 제안하였다. 이 시스템은 사물 지능 통신 환경 멀티미디어 컴퓨터 협력 작업을 위한 소프트웨어 복구에 적합하다. 이것은 세션의 진행 과정 중 세션의 미디어 서비스 인스턴스가 비정상적으로 종료되는 경우에 세션의 진행을 중단할 수 있지만 허용하는 한 미디어 서비스 인스턴스를 재 활성화 시켜 사용자에 대한 보호를 하는 경우에 필요하다. 본 논문은 규칙-기반 DEVS 모델링과 시뮬레이션 기법을 사용하면서 사물 지능 통신 기반 컴퓨팅 공동 환경의 오류 복구 시스템의 성능 분석을 설명한다.

• 대한수학회지
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• 제48권5호
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• pp.939-952
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• 2011

This paper is concerned with the solution of ill-conditioned Systems of Linear Equations (SLE's) via the solution of equivalent SLE's which are well-conditioned. A matrix is rst constructed from that of the given ill-conditioned system. Then, an adequate right-hand side is computed to make up the instance of an equivalent system. Formulae and algorithms for computing an instance of this equivalent SLE and solving it will be given and illustrated.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2006년도 가을 학술발표논문집 Vol.33 No.2 (B)
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• pp.346-351
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• 2006

시맨틱 웹에 대한 관심이 높아짐과 더불어 관련 기술인 온톨로지와 이를 이용한 추론 기술 역시 이슈가 되고 있다. RacerPro, Pellet 등 지금까지의 전형적인 추론 시스템들은 주로 Tableaux Algorithm 기반의 추론 시스템으로 Tableaux Algorithm의 특성상 대용량 ABox 추론에서 문제점을 나타낸다. 이를 해결하기 위한 연구로는 Tableaux Algorithm 기반의 Instance Store와 Disjunctive Datalog Approach를 사용한 KAON2가 있다. 이러한 추론 기술에 대해서는 많은 연구가 진행되고 있지만 각 추론 시스템들에 대한 평가는 부족하다. 현재 추론 시스템들의 벤치마킹은 대부분 Tableaux Algorithm 기반의 TBox 추론에 대한 것으로 ABox 추론 및 최근 이슈인 대용량 ABox 추론에 대한 평가는 특히 부족하다. 이에 본 논문에서는 각 추론 시스템들의 이론적 배경을 근간으로 지금까지의 전형적 추론엔진들과 최근 이슈에 따른 대용량 ABox 추론을 위한 시스템들을 이론적 비교를 통해 살펴보며, 특히 대용량 ABox 추론를 위한 시스템인 Instance Store와 KAON2를 LUBM을 사용하여 평가함으로 대용량 ABox 추론에 있어 사용자의 요구에 따른 적절한 시스템을 제시한다.