• Journal of Welding and Joining
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• 제32권1호
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• pp.61-65
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• 2014

The purpose of this study is to evaluate the applicability of the element stress to establish S-N design curve for the welded lap joint with thin plates below 2mm thickness. In order to do it, the extensive fatigue tests of the welded lap joints with INVAR alloy were performed. With the results, the deign S-N curves for the lap-weld were established by using the reference stresses such as the nominal stress range at the weld throat area, hot spot stress range and element stress range, and compared with regard to the standard deviation. The standard deviation of S-N curves with element stress range was less than that of S-N curves with other reference stresses. In addition, FEA results show the amount of the element stress is less sensitive to mesh size. Based on the results, it can be concluded that the element stress is to be used as the reference stress for the design S-N curves of the welded lap joint.

• 대한전자공학회논문지
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• 제22권6호
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• pp.1-6
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• 1985

기준입력은 정상상태 오차에 영향을 주는 요인 중의 하나다. 본 논문은 표준입력에 의해 야기피는 정상상태 오차를 제거할 수 있는 새로운 디지날 제각기 설계 방법을 제시한다. 먼저 연준입력 함수 형태에 따라, 기준입력 항이 제거된 새로운 제어 시스템 식이 유도되고. 최려제어를 이용하여 유도된 시스템의 출력을 최소로 하는 제어법칙이 구해진다. 강태공간 방법에 의해. 제시된 제어 알고리즘은 불안정 시스템을 포함해서 시불변 선형 시스템에 적용될 구 있다.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2005년도 추계종합학술대회
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• pp.237-240
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• 2005

본 논문에서는 AMBA 기반으로 사용될 수 있는 H.264용 CAVLC모듈의 새로운 구조와 설계를 하였다. 설계된 모듈은 Annex B.1 의 long-start code방식과 RTP 방식을 지원하며, 한 매크로 블록당 최대 420 cycle내에 동작한다. 제안된 구조를 검증하기위하여 JM 8.5부터 reference C를 개발하였으며, reference C로부터 test vector를 추출하여 개발된 회로를 검증하였다. 제안된 회로는 54MHz clock에서 동작하며, 합성결과 hynix 0.35 um TLM 공정에 14096 gate크기이다.

• 한국전산유체공학회지
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• 제16권2호
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• pp.56-61
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• 2011

Numerical study is conducted to design the high temperature heat exchanger of Stirling engine by using the commercial CFD solver, FLUENT. The Fin-tube type of heat exchanger is designed as a reference model by considering the type of engine which is ${\beta}$-configuration. To find the optimal design of heat exchanger in heat transfer capacity numerical calculation is conducted by changing the shape, the number, and material of reference model in three-dimensional combustion field. Adjusted one-way constant velocity of working fluid that is helium is considered as the representative velocity of oscillating flow. The optimal design of heat exchanger considering the heat transfer capability is suggested by using the calculation results.

• 한국주거학회논문집
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• 제21권6호
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• pp.43-52
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• 2010

It has applied the design method of face to face dimension, an MC (Modular Coordination) design method, at design steps of an apartment house for standardization of architecture. But It has been still using center line size. A construction limit isn't specific on these center line size, and dead space occurs with excessive gaps as size matching isn't performed well between structural sieve and parts. And above all, measurement before construction isn't to expect standardization, and to increase custom-made furniture. We investigate manufacture of a preferential domestic system kitchen and construction state, and we derive from a problem in viewpoints of standardization for this. And we utilized a reference plane, and we present construction document and design plan in order to solve these problems. And we analyze an effect got by application of the assembly basis aspect that we presented, and we can raise efficiency of standardization of housing and construction industry, and we light ultimately up.

• 한국CDE학회논문집
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• 제4권3호
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• pp.238-246
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• 1999

The modeling method to support product development processes (PDP) must have certain characteristics including the ability to represent multiple viewpoints of the product development and integrate with currently available analysis and design methods based on CE concept. This paper describes the reference model to support multiple viewpoints (PPO: Products, Processes, and Organizations/Resources viewpoints) of the product development processes, from which each model (Products model, Processes model, and Organizations/Resources model) can be extracted, as well as produces PPO data schema. This reference model has associative relationships among the products, processes, and organizations/resources. To allow the extensibility to support design evolution, we propose structured dat representation methods using semantic network, which can be constructed through first-order logic. The product development processes is so represented by specifying entities and semantic relationships among them hat he appropriate information can be accessed and all of the relevant attributes about the entities can be retrieved simultaneously.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2008년 추계학술발표대회 논문집
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• pp.448-451
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• 2008

This study is under doing to suggest application manual using assembling reference plane design & standard finish material basis upon material classification code as a tool of a linkage between building design and construction standarization in order to enlarge the applicability of house building material that is produced by the module plant. We can say the goal of building standardization intend not only the improvement of construction productibility but also guarantee of subsequent performance through automatization basis upon informationalization of building design. For a etabilishing of this condition, it is neccessary to link the standardization's result of material--design--construction field. According to this neccessity, we are going to suggest information factor that can make relative business manager easily approach to the standardization practical task.

• 한국문헌정보학회지
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• 제36권2호
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• pp.231-241
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• 2002

웹 의존형 라이브러리의 RRS를 이용하는 이용자는 자신이 선택한 웹 문서에 신속하게 그리고 정확하게 접근하기를 원한다. 이용자의 이러한 요구는 RRS의 디자인과 밀접한 관계를 갖고 있으며, 간단하게 사용하고 편리하게 접근할 수 있는 구조를 가진 최적의 RRS 디자인은 이용자 뿐만 아니라 도서관에도 커다란 도움을 줄 수 있을 것이다. 이 글에서는 웹 의존형 라이브러리의 RRS 유형과 관련해서, 216가지의 대안을 제시하였다. 웹 디자이너나 사서가 RRS를 새롭게 또는 갱신하고자 할 경우에, 이러한 대안들은 기초 자료로서 많은 도움을 줄 것이다.

• 정보처리학회논문지B
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• 제10B권1호
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• pp.67-72
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• 2003

이 논문은 문맥 종속 화자인식에 사용될 벡터 앙자기의 설계법 개선에 관한 연구이다. 구체적으로 벡터 양자기 코드북 생성 과정에서 기준 화자를 제외한 모든 비기준 화자에 대해 비반복적 학습 방법을 사용하여, 학습에 필요한 계산 복잡도를 획기적으로 줄이는 방법을 제안한다. 이 제안된 준비반복 벡터 양자기 설계법은, 종래의 설계법이 모든 화자의 코드북 생성에 반복적 학습 설계를 사용한다는 것과 대조를 이룬다. 준비반복 벡터 양자기 설계법의 특징은 다음과 같다. 첫째, 이 설계법은 단지 기준 화자에 대하여만 반복 학습을 수행하고 비기준 화자에 대하여는 반복 학습을 하지 않는다. 둘째, 설계된 비기준 화자의 양자 영역은 기준화자의 양자 영역을 원용하며, 양자점은 자신의 통계 분포에 대해 최적점으로 설정된다. 수치 실험은 화자 20명에 대하여 멜켑스트럼 12차 특징벡터를 사용하였고 코드북 크기를 2부터 32까지 변화시키면서 기존의 벡터 양자기 인식법과 비교하였다. 제안된 방법은 코드북 크기가 적절하고 학습 데이터 길이가 충분한 경우 인식률 100%로 기존의 방법과 같은 결과를 보였다. 따라서 제안된 준비반복 벡터 양자기 설계법은, 설계에 필요한 학습 횟수가 획기적으로 줄면서 인식률은 보존되어, 새로운 대안이 될 것으로 사료된다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1994년도 Proceedings of the Korea Automatic Control Conference, 9th (KACC) ; Taejeon, Korea; 17-20 Oct. 1994
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• pp.488-493
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• 1994

The global stability of model reference adaptive control system (MRACS) in the ideal case was resolved in the 1980's. Hoever the improvement of the transient, behaviour of MRACS has not been discussed sufficiently even in the ideal case. Only a few attempts have so far been made at the application of MRACS to the practical systems in contrast to the theoretical systematization. Therefore, when we consider the practical usage of MRACS it is necessary to develop an improved design scheme with respect to transient behaviour. In this paper, we propose two design schemes improving transient behaviour of MRACS by mollifying the input synthesis in the conventional design scheme of MRACS. We present a design scheme of MRACS in which we utilize the design approach of variable structure system(VSS). After describing the above design scheme, we also propose the improved design scheme in which we introduce the dead-zone decided by the magnitude of the output-error between the plant and the reference model. The effectiveness of the proposed two design schemes are shown through computer simulations. As the results, by using these methods, the convergence of the transient response is greatly improved in comparison with the conventional one.