• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 2000년도 추계학술대회 논문집
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• pp.132-135
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• 2000

A process design expert system for rotationally symmetric deep drawing products has been developed The application of the expert system to non-axisymmetric components, however, has not been reported yet. Thus, in this present study, the expert system for non-axisymmetric deep drawing products with elliptical shape was constructed by using process sequence design. The system developed in this work consists of four modules. The first one is a recognition of shape module to recognize non-axisymmetric products. The second one is three dimensional (3-D) modeling module to calculate the surface area for non-axisymmetric products. The third one is a blank design module to create an oval-shaped blank with the identical surface area. The forth one is a process planning module based on the production rules that play the best important role in an expert system for manufacturing. The production rules are generated and upgraded by interviewing with field engineers.

• 대한기계학회논문집
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• 제18권1호
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• pp.12-23
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• 1994

This paper proposes an optimal design software for the open-chain dynamic systems whose governing equations are expressed as differential equation. In this software, an input module and an automatic creation module of the equation of motion are developed to contrive the user's convenience. To analyze the equation of motion of the dynamic systems, variable-order and variable-stepsize Adams-Bashforth-Moulton predictor-corrector method is used to improve the efficiency. For the optimization and the design sensitivity analysis, ALM(augmented lagrange multiplier)method and adjoint variable method are adopted respectively. An output module with which the user can compare and investigate the analysis and the optimization results through tables and graphs is also provided. The developed software is applied to three typical dynamic response optimization problems, and the results compare very well with those available in the literature, demonstrating its effectiveness.

• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 2005년도 추계학술발표대회 논문집
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• pp.61-64
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• 2005

The purpose of this study is developing basic module of kitchen furniture design by considering the dimensions of work-surfaces, such as the size of worktable and the length of the kitchen furniture based on the physical size of a human scale and the behavior in the kitchen and the size of goods. In conclusion, this study develops a basic module of the kitchen furniture and suggests the new dimension for the kitchen based on the human scale and demand for the kitchen goods thus, it is expected to use it as a basic data for the kitchen space study and kitchen furniture industry.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2007년도 추계학술대회논문집
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• pp.291-296
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• 2007

This study presents the evaluation process for door module. Its objective evades the resonance generated at module plate due to the operation of window regulator motor. For this study, the design improvement process is composed of experimental methods having three steps. First step is modal analysis at door assembly status for acquisition of dynamic characteristics which are modal frequency and damping. Second step is a vibration experiment to get the test mode considered an efficiency of window regulator motor. Last step is a vibration measurement by the form of $6{\times}6$ array on module plate. A vibration measurement of 6x6 array form can be got to three analysis results which are a transfer path of vibration using cross correlation function, a vibration map using OA level and a contribution by frequency band using coherent output power spectrum on module plate. These results are applied to SDM(structural dynamic modification) for design improvement to get around the resonance on module plate by the excitation of window regulator motor.

• 한국정보전자통신기술학회논문지
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• 제4권1호
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• pp.39-45
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• 2011

본 논문에서는 공통의 플랫폼을 기반으로 하는 모바일 와이맥스 기지국 운용용 휴대형 신호분석 시스템의 설계방법을 제안하고, 이를 하드웨어 모듈로 구현하였다. 새롭게 제안한 신호분석 방법은 RF 신호의 IF 신호로의 하향 변환 및 이득제어를 수행하는 광대역 RF 모듈과 계측 기능을 수행하는 DSP 기반 디지털 신호분석 모듈로 구현하는 것이다. 타 고정 대형 시스템과의 비교를 통해 수행한 신호분석 알고리즘의 성능을 검증한 결과, 분해능의 차이는 없음을 확인하였다.

• 전자공학회논문지A
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• 제32A권3호
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• pp.89-99
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• 1995

In this paper, we ecamined the effect that MCM-L technique influencess on the design and fabrication of multichip memory modules in increasing the packing desity of memory capacity and maximizing its electrical characteristics. For that purpose, we examined the effective methods of reducing the area of module layout and the wiring length with the variation of chip allocation and the number of wiring layers. We fabricated a 256K${\times}$8bit SRAM module with eight 32K${\times}$8bit SRAM chips. The routing experiment showed that we could optimize the area of module layout and wiring length by placing chips in a row, arranging module I/O pads parallel to chip I/O pads, and equalizing the number of terminal sides of module I/O's to that of chip I/O's. The routing was optimized when we used three wire layers in case of one sided chip mounting or five wire layers in case of double sided chip mounting. The fabricated modules showed 18.9 cm/cm$^{2}$ in wiring density, 65 % in substrate occupancy efficiency, and module substrate and functionally tested to find out the module working perfectly.

• 한국컴퓨터정보학회논문지
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• 제21권12호
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• pp.43-49
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• 2016

This paper presents the design and implementation of virtual aquarium by generating 3D models of fishes that are colored by viewers in an aim to create interaction among viewers and aquarium. The virtual aquarium system is composed of multiple texture extraction modules, a single interface module and a single display module. The texture extraction module recognize the QR code on the canvas to get information of the predefined mapping table and then extract the texture data for the corresponding 3D model. The scanned image is segmented and warp transformed onto the texture image by using the mapping information. The extracted texture is transferred to the interface module to save on the server computer and the interface module sends the fish code and texture information to the display module. The display module generates a fish on the virtual aquarium by using predefined 3D model with the transmitted texture. The fishes on the virtual aquarium have three different swimming methods: self-swimming, autonomous swimming, and leader-following swimming. The three different swimming methods are discussed in this paper. The future study will be the implementation of virtual aquarium based on storytelling to further increase interactions with the viewer.

• 한국태양에너지학회 논문집
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• 제30권6호
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• pp.102-107
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• 2010

a-Si solar cell has relatively dominant drift current when compared with crystalline solar cell due to the high internal electric field. Such drift current make an impact on the PV module in the local shading. In this paper, the a-Si PV module output characteristics of shading effects was approached in terms of process condition, because of the different deposition layer of thin film lead to rising the resistance. We suggested design condition to ensure the long-term durability of the module with regard to the degradation factors such as hot spot by analyzing the module specification. The result shows a remarkable difference on module uniformity for each shading position. In addition, the unbalanced power loss due to power mismatch of each module could intensify the degradation.

• 정보처리학회논문지A
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• 제14A권3호
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• pp.185-190
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• 2007

임베디드 리눅스 디바이스 드라이버의 개발이 증가하면서 이에 대한 오류 테스트 기능을 가진 모듈의 필요성이 증가되고 있다. 본 논문은 리눅스 디바이스 드라이버를 위한 freed 메모리 오류 테스트 모듈의 기본 개념을 제시하며, 기본 개념을 바탕으로 오류 테스트 모듈을 설계한다. freed 메모리 오류 테스트 모듈 설계를 위해 리눅스 USB 디바이스 드라이버에 적용하고, 오류가 발생할 가능성이 존재하는 부분에 대한 검증 코드를 추가하여 테스트 모듈을 작성한다. 오류 테스트 모듈 설계를 위해서 usb storage 디바이스 드라이버를 대상으로 하였다. 또한 작성된 오류 테스트 모듈의 실험을 진행하였다. 실험을 통해 리눅스 디바이스 드라이버의 오류 테스트 모듈의 동작을 확인할 수 있다.

• 한국디지털정책학회:학술대회논문집
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• 한국디지털정책학회 2004년도 International Conference on Digital Policy & Management
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• pp.221-229
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• 2004

This paper aims at developing communication module and application prcgram for client management module and developing database management module and managing wireless communication facilities for server systems. To construct these aims, we have adapted DES algorithm and researched on encrypting and decrypting module development applicable to SMS Security System and optimize module size and processing speed.