• 한국정보전자통신기술학회논문지
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• 제10권2호
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• pp.192-197
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• 2017

본 논문은 저전력 영상 특징 추출 하드웨어 설계를 위한 공통 부분식 제거 기법 기반 이미지 필터 하드웨어 최적화 기법을 제안한다. 저전력 및 고성능 물체인식 하드웨어는 공장 자동화를 위한 산업용 로봇에 필수 모듈로 채택되고 있다. 따라서 물체인식 하드웨어의 영상 특징 추출 알고리즘에 다양하게 적용되는 Gaussian gradient 필터 하드웨어의 저면적 설계가 필수적이다. Gaussian gradient 필터의 하드웨어 복잡도를 줄이기 위해 필터에 사용되는 계수의 Symmetric한 특징과 Transposed form FIR 필터 하드웨어 구조를 이용했다. 제안된 이미지 필터의 하드웨어 구조는 알고리즘에 적용된 계수의 변형 없이 구현되었기 때문에 윤곽선 검출 알고리즘에 적용했을 때 검출 데이터의 열화 없이 구현될 수 있다. 제안된 이미지 필터 하드웨어 구조는 기존 구조와 비교했을 때 곱셈기의 수를 50% 절감할 수 있음을 확인했다.

• 한국실내디자인학회논문집
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• 제23권6호
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• pp.142-149
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• 2014

The modern public facility has been changed by complexity and diversity. It pursues public facility applying safety and amenity based on universal design. Among public facilities, the importance of street furniture is emphasized currently due to offer for pedestrians rest ares in a city street. However, it is very difficult for pedestrians to use street furniture conveniently and safely, because on the planning street furniture has not been considered thoroughly in aspects of universal design. The Purpose of this study is to evaluate street furniture in aspects of universal design. Also, this study suggests the Improvement plan for considering users of street furnitures. The method of this study is literature review and questionnaire survey. Firstly, we collected the data related to public facility and universal design, analyzed the data. Secondly, the items of questionnaire survey deduced based on analyzed data of literature review. Thirdly, we analyzed the result of questionnaire survey and evaluate the street furniture. Lastly, We discussed the solution to improve the present street furniture for a rest through the results and overseas cases. It has contributed in the improvement plan of street furniture thanks to deal with the evaluation of street furniture for pedestrians in aspects of universal design.

• Wind and Structures
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• 제31권2호
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• pp.153-164
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• 2020

In the design of buildings, lateral loading is one of the most important factors considered by structural designers. The concept of performance-based design (PBD) is well developed for seismic load. Whereas, wind design is mainly based on elastic analysis for both serviceability and strength. For tall buildings subject to extreme wind load, inelastic behavior and application of the concept of PBD bear consideration. For seismic design, current practice primarily presumes inelastic behavior of the structure and that energy is dissipated by plastic deformation. However, due to analysis complexity and computational cost, calculations used to predict inelastic behavior are often performed using elastic analysis and a response modification factor (R). Inelastic analysis is optionally performed to check the accuracy of the design. In this paper, a framework for application of an R factor for wind design is proposed. Theoretical background on the application and implementation is provided. Moreover, seismic and wind fatigue issues are explained for the purpose of quantifying the modification factor R for wind design.

• 디자인학연구
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• 제21권
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• pp.1-12
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• 1997

본 연구는 인지과학으로부터 몇 가지의 이론을 이용하여 디자인의 사고과정 중의 일부를 설명함으로서, 인지과학으로부터의 지식을 디자인의 문제 해결에 응용하거나, 새로운 사고 발상 방법을 개발할 수 있는 가능성을 모색하기 위한 것이다. 디자인은 복합적이고 고도의 두뇌활동을 필요로 하는 영역이다. 그리고 인지과학은 인간의 두뇌활동을 연구하는 학문이다. 따라서 디자인과 인지과학의 연결은 디자인의 거의 전반에 걸쳐 응용될 가능성을 가지고 있다. 그 연결 가능성을 살펴보기 위하여 본 논문은 주로 아이디어 발상부분에 대한 사고의 과정을 인지과학으로 부터의 지식을 빌어 설명하여 보았다. 디자인의 프로세스와 사고 발상 과정을 인지과학의 지식구조에 대한 이론으로 해석해 본 결과, 디자인 사고 발상의 새로운 전개 가능성을 찾을 수 있었다.

• International Journal of Naval Architecture and Ocean Engineering
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• 제5권3호
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• pp.468-477
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• 2013

An automatic pipe routing system is proposed and implemented. Generally, the pipe routing design as a part of the shipbuilding process requires a considerable number of man hours due to the complexity which comes from physical and operational constraints and the crucial influence on outfitting construction productivity. Therefore, the automation of pipe routing design operations and processes has always been one of the most important goals for improvements in shipbuilding design. The proposed system is applied to a pipe routing design in the engine room space of a commercial ship. The effectiveness of this system is verified as a reasonable form of support for pipe routing design jobs. The automatic routing result of this system can serve as a good basis model in the initial stages of pipe routing design, allowing the designer to reduce their design lead time significantly. As a result, the design productivity overall can be improved with this automatic pipe routing system.

• Advances in aircraft and spacecraft science
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• 제4권3호
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• pp.297-316
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• 2017

With rapid growth in the complexity of large scale engineering systems, the application of multidisciplinary analysis and design optimization (MDO) in the engineering design process has garnered much attention. MDO addresses the challenge of integrating several different disciplines into the design process. Primary challenges of MDO include computational expense and poor scalability. The introduction of a distributed, collaborative computational environment results in better utilization of available computational resources, reducing the time to solution, and enhancing scalability. SORCER, a Java-based network-centric computing platform, enables analyses and design studies in a distributed collaborative computing environment. Two different optimization algorithms widely used in multidisciplinary engineering design-VTDIRECT95 and QNSTOP-are implemented on a SORCER grid. VTDIRECT95, a Fortran 95 implementation of D. R. Jones' algorithm DIRECT, is a highly parallelizable derivative-free deterministic global optimization algorithm. QNSTOP is a parallel quasi-Newton algorithm for stochastic optimization problems. The purpose of integrating VTDIRECT95 and QNSTOP into the SORCER framework is to provide load balancing among computational resources, resulting in a dynamically scalable process. Further, the federated computing paradigm implemented by SORCER manages distributed services in real time, thereby significantly speeding up the design process. Part 1 covers SORCER and the algorithms, Part 2 presents results for aircraft panel design with curvilinear stiffeners.

• Advances in aircraft and spacecraft science
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• 제4권3호
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• pp.317-334
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• 2017

With rapid growth in the complexity of large scale engineering systems, the application of multidisciplinary analysis and design optimization (MDO) in the engineering design process has garnered much attention. MDO addresses the challenge of integrating several different disciplines into the design process. Primary challenges of MDO include computational expense and poor scalability. The introduction of a distributed, collaborative computational environment results in better utilization of available computational resources, reducing the time to solution, and enhancing scalability. SORCER, a Java-based network-centric computing platform, enables analyses and design studies in a distributed collaborative computing environment. Two different optimization algorithms widely used in multidisciplinary engineering design-VTDIRECT95 and QNSTOP-are implemented on a SORCER grid. VTDIRECT95, a Fortran 95 implementation of D. R. Jones' algorithm DIRECT, is a highly parallelizable derivative-free deterministic global optimization algorithm. QNSTOP is a parallel quasi-Newton algorithm for stochastic optimization problems. The purpose of integrating VTDIRECT95 and QNSTOP into the SORCER framework is to provide load balancing among computational resources, resulting in a dynamically scalable process. Further, the federated computing paradigm implemented by SORCER manages distributed services in real time, thereby significantly speeding up the design process. Part 1 covers SORCER and the algorithms, Part 2 presents results for aircraft panel design with curvilinear stiffeners.

• 한국CDE학회논문집
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• 제16권3호
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• pp.187-196
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• 2011

Generally, BOM (Bill of Material) means a part list which is needed to manufacture or assemble a product or part. During manufacturing processes, BOM is inevitably required for most of enterprise processes such as design, procurement, production planning/control, resource planning, and financial works. Every manufacturing industry uses many kinds of BOM's that are adjusted to the requirement of functions of their work division. Moreover, BOM evolves in different forms according to the product development phases such as conceptual design; function design, detail design, and production design because it is necessary to use different product structures to keep product data generated throughout the lifecycle of a product. This includes all data and information related to the all the product development phases. Shipbuilding works also are processed and controlled based on BOM. However, effective maintenance of ship outfitting BOM data is getting difficult as the amount and complexity of data have increased due to variety and long lifecycle of ship. For the effective management of outfitting BOM data, two aspects must be considered. One is how to classify numerous BOMs type and the others how to display BOMs. So this study suggests a method to classify BOM types and propose two categories - Structure BOM, Display BOM. Base on this result, we propose the integrated ship outfitting BOMs model and analysis outfitting BOMs.

• 유통과학연구
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• 제13권4호
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• pp.9-19
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• 2015

Purpose - This study focuses on the use of evaluative criteria software for imprecise market information, and product mapping relationships between design parameters and customer requirements. Research design, data, and methodology - This study involved using the product predicted value method, synthesizing design alternatives through a morphological analysis and plan, realizing the synthesis in multi-criteria decision-making (MCDM), and using its searching software capacity to obtain optimal solutions. Results - The establishment of product designs conforms to the customer demand, and promotes the optimization of several designs. In this study, the construction level analytic method and the simple multi attribute comment, or the quantity analytic method are used. Conclusions - This study provides a solution for enterprise products' multi-goals decision-making, because the product design lacks determinism, complexity, risk, conflict, and so on. In addition, the changeable factor renders the entire decision-making process more difficult. It uses Fuzzy deduction and the correlation technology for appraising the feasible method and multi-goals decision-making, to solve situations of the products' multi-goals and limited resources, and assigns resources for the best product design.

• 한국컴퓨터그래픽스학회논문지
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• 제15권4호
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• pp.13-21
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• 2009

레벨디자인은 게임 개발에 있어 가장 중요한 부분 중 하나이지만, 많은 게임 내 구성 요소가 복합적으로 영향을 미치어 최적의 조합을 찾기가 어려운 문제이다. 본 논문에서는 유전자 알고리즘을 사용하여 범용적인 게임 레벨 생성을 위한 방법을 새로이 제안한다. 제안된 시스템을 통해 게임 디자이너는 단순화된 목표 수치 입력만으로도 다양한 게임 구성 요소로 이루어진 레벨을 근사화시켜 생성할 수 있게 된다. 이는 게임 레벨 디자인 업무 프로세스 상에서 원하는 최적의 레벨을 구성하는데 걸리는 시행 착오 시간을 단축시키는데 도움이 될 수 있다.