• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2004년도 춘계학술발표회
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• pp.113-119
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• 2004

A steel plated is typically composed of plate panels. The overall failure of the structure is certainly affected and can be governed by the bulking and plastic collapse of these individual members In the ultimate limit state design. therefore. a primary task is to accurately calculate the budding and plastic collapse strength of such structural members. Structural elements making up steel palated structures do not work separately. resulting in high degree of redundancy and complexity in contrast to those of steel framed structures. To enable the behavior of such structures to be analyzed, simplifications or idealizations must essentially be made considering the accuracy need and degree of complexity of the analysis to be used Generally the more complex the analysis the greater is the accuracy that may be obtained. The aim of this study is the investigation of the effect of the tripping behaviour including section characteristic for a plate under uniaxial compression.

• Journal of information and communication convergence engineering
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• 제15권1호
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• pp.7-13
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• 2017

We consider a distributed estimation where many nodes remotely placed at known locations collect the measurements of the parameter of interest, quantize these measurements, and transmit the quantized data to a fusion node; this fusion node performs the parameter estimation. Noting that quantizers at nodes should operate in a non-regular framework where multiple codewords or quantization partitions can be mapped from a single measurement to improve the system performance, we propose a low-weight estimation algorithm that finds the most feasible combination of codewords. This combination is found by computing the weighted sum of the possible combinations whose weights are obtained by counting their occurrence in a learning process. Otherwise, tremendous complexity will be inevitable due to multiple codewords or partitions interpreted from non-regular quantized data. We conduct extensive experiments to demonstrate that the proposed algorithm provides a statistically significant performance gain with low complexity as compared to typical estimation techniques.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 하계종합학술대회 논문집(2)
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• pp.109-112
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• 2002

This paper presents relationship between the dynamic behavior of an asynchronous linear pipeline (ALP) and the performance of the ALP as buffers are allocated. Then the relationship is used in order to characterize a local optimum situation on the buffer design space of the ALP. Using the characterization we propose an efficient algorithm optimizing buffer allocation on an ALP in order to achieve its average case performance. Without the loss of optimality, our algorithm works in linear time complexity so it achieves fast buffer-configuration optimization. This paper makes two contributions. First, it describes relationship between the performance characteristics of an ALP and a local optimum on the buffer design space of the ALP. Second, it devises a buffer allocation algorithm finding an optimum solution in linear time complexity.

• 한국컴퓨터정보학회논문지
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• 제6권3호
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• pp.56-63
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• 2001

본 논문에서는 부분체(24)를 갖는 유한체 GF(216)의 곱셈기를 설계하였다. 이런 설계는 부분체를 이용한 비트 병렬 곱셈기를 사용한 순차 논리 곱셈기를 만들기 위해 사용된다. 부분체 상의 병렬연산기를 사용하여 유한체 GF(216)의 직렬 곱셈기를 설계하면 기존의 직렬 곱셈기보다는 짧은 지연시간을 얻을 수 있으며, 병렬 곱셈기보다는 적은 하드웨어로 구현할 수 있다. 이러한 설계는 유용한 특징을 갖는다. 여기서는 회로 복잡도와 지연시간의 특징을 비교하고 C언어를 이용하여 시뮬레이션 결과를 보였다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2000년도 추계종합학술대회 논문집(2)
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• pp.124-127
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• 2000

With increasing design complexity, shrinking time-to-market window, and various demands from markets, the traditional design methodologies reach-ed a ceiling. In a search for a way to tackle these problems, novel concepts and methodologies have been proposed in the past years. The paper briefly presents the design issues, and concepts, introduces commercial tools, and finally proposes a conceptual methodology that addresses the issues.

• 산업경영시스템학회지
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• 제21권47호
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• pp.233-241
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• 1998

With the increasing complexity of man-made systems, computer simulation has become a widely used tool for the design and analysis of complex system. When computer simulation is used for the purpose of system design, the analysts want to develop strategies to achieve some pre-defined target condition for an output of interest while simultaneously minimizing its variance. The goal of this research is to develop and demonstrate a new method for the design of robust systems with multiple responses using the fuzzy satisfaction function and computer simulation experiments.

• 한국실내디자인학회논문집
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• 제26권5호
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• pp.135-142
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• 2017

Recently, as human-centered design and humanization of space accelerates, the concept of physical space is changing to user-centered space. In particular, in the case of exhibition space to utilize digital media, visitors' actively experiencing exhibits and participating exhibition are regarded as an important factor, thus affordance design serves as a crucial factor to afford satisfaction with exhibition space to the visitors. Accordingly, the study is to understand the concept of the affordance and the digital media exhibition environment and to analyze the preference for each affordance design factor in the digital exhibition environment. The survey is conducted to people in the twenties who inhabit Seoul and the metropolitan area, familiar with the digital media. The results of the survey show that the most important role of the digital media in the exhibition environment is to create the atmosphere for concentration and complexity is the most preferable among interactivity, network ability and complexity, the feature of the digital media. Additionally, the results reveal that cognitive affordance presenting the feature of design to help the user when he/she want to know something is the most preferable among sensory affordance, physical affordance, cognitive affordance and functional affordance and as the time exposed to the digital media increases the importance of the affordance design is high. As the digital environment is common now in many fields, it will be regarded as a crucial factor to the visitors of an exhibit hall from now on whether affordance design is used.

• Architectural research
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• 제4권1호
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• pp.7-16
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• 2002

In order to examine theoretical underpinnings of preference for built forms, 129 subjects are asked to rate a series of 9 slides of residential houses depicting a wide range of architectural styles on a 5 point scale, for coherence, complexity, excitement, familiarity, and natural harmony, respectively. Based on Lee's (2002a, 2002b) two previous studies addressing the issue of aesthetic beauty evaluation for man-made creatures (e.g., residential housing scenes), this study summarizes several meaningful findings. As reported by all the subjects, first, both "desire to visit" and "desire to live in" turned out to be a good predictor of preference as the two measures are highly correlated in statistically significant levels (99.9%). People who desire to visit a spot are more likely to desire to live in it. Second, Pearson's correlations showed that coherence is the opposite end of complexity. The more likely a housing setting is hanging together, the less likely it looks to be complex. Overall, though, it is not clear that the two variables work directly in that way, as weighted on preference ratings. That is, coherence and complexity are likely to be totally two independent systems that affect the ratings of preference. Third, both excitement and environmental sensitivity (e.g., harmony of a house with its surrounding nature) most highly account for the preference for various housing scenes, while familiarity has only a little effect on preference ratings. Possibly, people like or dislike a visual thing, no matter how much they are familiar with it. Finally, this study suggested that design professionals could communicate effectively with their clients if sets of visual standards as an appropriate communication tool for better design are properly established.

• 한국정보통신학회논문지
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• 제25권2호
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• pp.274-279
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• 2021

일반적인 대용량 안테나 시스템은 RF 체인의 개수가 매우 많기 때문에, 구현 비용 및 복잡도가 크게 증가하는 단점이 있다. 이러한 문제를 해결하기 위하여 하이브리드 프리코더 설계 기법들이 제안되었으나, RF 체인이 모든 안테나에 연결되기 때문에, 여전히 구현 비용과 복잡도가 너무 높은 상태이다. 본 논문에서는 부분 중첩 안테나 구조를 갖는 대용량 MIMO 시스템을 고려하고 하이브리드 프리코더 설계 방법을 제안한다. 부분 중첩 구조에서는 RF 대역 아날로그 프리코딩 행렬의 많은 원소들이 0의 값을 갖는 듬성 행렬 형태를 갖는다. 이러한 듬성 행렬의 특성을 이용하여, GTP 기반의 RF 대역 아날로그 프리코딩 행렬 및 기저대역 디지털 프리코딩 행렬을 설계하는 방법을 제안한다. 모의실험을 통하여, 제안 기술이 일반적인 완전 연결 구조를 갖는 경우와 비교해서 20~30% 정도의 구현 복잡도를 가지고도, 완전 연결 구조의 85% 이상의 주파수 효율 성능을 갖는다는 것을 보인다.

• 방송공학회논문지
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• 제20권4호
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• pp.509-520
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• 2015

본 논문은, HEVC (High Efficiency Video Coding) 와의 모듈 중복성을 제거하여 구현 복잡도를 낮춘, 3D-HEVC 머지 모드에 대한 설계를 제안한다. 확장 코덱의 구현 복잡도는 부호화 효율에 못지않게 매우 중요한 고려사항이므로, 가능하다면 레거시 코덱의 설계를 그대로 재사용함으로써 손쉽게 구현될 수 있어야 한다. 그러나 기존의 3D-HEVC 머지 모드 확장구조는 HEVC의 처리과정 내부에 빌트인으로 통합되어 있어서, 레거시 코덱인 HEVC와 중복되는 처리과정을 모두 새로이 재구현해야 함에 따라 구현 복잡도가 매우 높았다. 제안된 방법에서는, 재사용 된 HEVC 모듈들을 그대로 실행하는 단계와, 3D-HEVC에서 새로 도입되거나 수정된 부분만을 실행하는 단계의 구조로 분리하여 머지 모드의 설계를 변경하였다. 본 논문에서 제안된 설계를 적용함으로써, 51.4%에 달하던 중복구현을 제거할 수 있음을 알고리즘 동작분석을 통하여 확인할 수 있었으며, 제안된 설계로 인해서 야기되는 부호화 효율의 감소 및 연산 복잡도의 증가는 전혀 없었다.