• 시스템엔지니어링학술지
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• 제10권1호
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• pp.81-86
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• 2014

Systems Engineering application focused on requirement definition and management for SURION System Development Project is described in this paper. To perform the development process effectively based on systems engineering processes; Requirements Definition, Design Review, Configuration Management, Quality Assurance, Data Management, are applied in this project. In this processes, the Stakeholder's Requirements are transferred to Specifications verified with design reviews, prototyping inspections, and integration tests. All engineering data, especially verification plan & results are recorded, and traced to each requirements of system specification in Surion database. Therefore, it could be assured that all requirements of specification are evaluated and verified successfully in Surion Project.

• Nuclear Engineering and Technology
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• 제35권6호
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• pp.566-580
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• 2003

To resolve the concern of the SWR possibility in LMR and improve the economic feature of LMR, relative performance of various SG designs using a double tube bundle configuration is evaluated and a new SG design concept is proposed. The new steam generator design houses two tube bundles that are functionally different and its tube bundle region is radially divided into two. It prevents the occurrence of sodium water reaction while sodium is still used as the coolant for the primary heat transport system. The feasibility of the SG with a double tube bundle for actual use in an LMR plant is evaluated by setting up the skeleton of the NSSS for various possible configurations of the SG tube bundles. The evaluation revealed the relative advantages and disadvantages of the configurations and the new SG design concept performs good and can be actually used in an LMR plant.

• Steel and Composite Structures
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• 제21권4호
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• pp.949-962
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• 2016

The braking hose in the automotive hydraulic braking system exhibits the complicated anisotropic large deformation while its movable end is moving along the cyclic path according to the steering and bump/rebound motions of vehicle. The complicated large deformation may cause not only the interference with other adjacent automotive parts but also the durability problem resulting in the fatal microcraking. In this regard, the design of high-durable braking hose with the interference-free layout becomes a hot issue in the automotive industry. However, since it has been traditionally relied on the cost-/time-consuming trial and error experiments, the cost- and time-effective optimum design method that can replace the experiment is highly desirable. Meanwhile, the hose deformed configuration and fatigue life are different for different hose cyclic paths, so that their characteristic investigation becomes an important preliminary research subject. As a preliminary step for developing the optimum design methodology, we in this study investigate the hose deformed configuration and the fatigue life for four representative hose cyclic paths.

• 한국항공운항학회지
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• 제21권4호
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• pp.17-26
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• 2013

In this paper, a configuration procedure of a transportation infrastructure system for GNSS based very precise real-time positioning is proposed. This infrastructure system consists of several receiving station, a central station, and communication sub-systems. The required performance, design, implementation and verification of each sub-system are explained respectively. The required performance can be broken down into accuracy, integrity, stability, processing time. The design of the each sub-system is performed in accordance with the required performance and each sub-system is built with regard to the design. Lastly the implemented system is verified in comparison with the required performance.

• 항공우주기술
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• 제3권1호
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• pp.277-286
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• 2004

스마트 사업단에서 비행체개념으로 적용하고 있는 틸트로터 형상의 설계 특성 및 주요 사이징 변수에 대해 그간에 선진 항공업체에서 진행된 방대한 연구 결과를 종합적으로 정리하고 다른 수직이착륙 비행체와 대별되는 틸트로터 비행체의 특성을 분석, 정리하였다. 또한 스마트무인기 개발 사업단 자체적으로 수행한 개념설계와 진행중인 기본설계 결과 확인된 틸트로터 비행체 설계의 특성 및 주요 고려사항들을 정리하였다. 이 논문은 틸트로터 비행체 설계특성과 기술적 고려사항에 대한 종합적인 이해를 갖고자 하는 이들에게 큰 도움이 될 것이다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2000년도 하계학술대회 논문집 C
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• pp.2213-2215
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• 2000

In this paper we implemented a novel re-entrant mode microstrip directional coupler for realizing the high directivity characteristic using finite element (FE) analysis. In microstrip configuration, the high directivity can be reached by matching the even- and odd-mode effective phase velocities. Through the values of capacitance obtained from 2-dimensional finite element(FE) analysis, the phase velocities for each mode and the design parameter were extracted for the proposed coupled-line configuration. Based on the extracted design parameter with phase matching condition we designed and fabricated 30dB directional coupler at 850MHz. Experimental results show good performance with excellent isolation.

• 한국컴퓨터정보학회:학술대회논문집
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• 한국컴퓨터정보학회 2014년도 제49차 동계학술대회논문집 22권1호
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• pp.1-4
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• 2014

Although physical modeling synthesis is becoming more and more efficient in rich and natural high-quality sound synthesis, its high computational complexity limits its use in portable devices. This constraint motivated research of single-instruction multiple-data many-core architectures that support the tremendous amount of computations by exploiting massive parallelism inherent in physical modeling synthesis. Since no general consensus has been reached which grain sizes of many-core processors and memories provide the most efficient operation for sound synthesis, design space exploration is conducted for seven processing element (PE) configurations. To find an optimal PE configuration, each PE configuration is evaluated in terms of execution time, area and energy efficiencies. Experimental results show that all PE configurations are satisfied with the system requirements to be implemented in portable devices.

• 한국실내디자인학회논문집
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• 제29호
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• pp.120-127
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• 2001

The study aims at finding out the spatial configuration of a small art museums through the analysis of visual Perception in spatial layouts. In so doing to analyze the characteristics of spatial perception in visual layouts and identity of space to evaluate the spatial construction with relation to the role of small art museums. Purpose of this study is to offer basic data to contribute effectiveness of the architectural planning of a small art museums by understanding of visual element of design and ultimately to make efficient use of space.

• 한국연소학회:학술대회논문집
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• 한국연소학회 2013년도 제46회 KOSCO SYMPOSIUM 초록집
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• pp.51-54
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• 2013

Rotary kiln reactors are frequently equipped with an axial burner with which solid burden material is directly heated. Lifters are commonly used along the length of the system to lift particulate solids and increase the heat transfer between the solid bed and the combustion gas. The material cascading from the lifters undergoes drying and reacting through direct contact with the gas stream. In this study, volume distribution of materials held within lifters was modeled according to the different lifter configuration and appropriate configuration was used for the design purpose. This was applied to the one-dimensional heat balance model of a counter-current flow reactor, which contributes to the increase of the effective contact surface, and thereby enhances the heat transfer.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2014년도 춘계학술대회
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• pp.507-510
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• 2014

기존 생체정보 시스템은 구성 초기에 정의된 생체정보 프로세스가 시스템 실행 후에 변경 없이 정적이고 지속적으로 동일한 프로세스를 수행한다. 그러나 이러한 정적 프로세스는 이동 컴퓨팅을 수행하는 이동 생체정보시스템 응용에 비효율적인 실행을 나타낸다. 특히, 생체정보시스템의 프로세스 구성 및 방법 변경 시에 새로운 정의 및 실행 초기화를 수행해야하는 불편한 업무를 수반하게 된다. 본 연구는 이러한 비효율적 프로세스를 극복하기 위한 방안으로 동적 프로세스 설계 및 실행기법을 제안한다.