• The Transactions of the Korean Institute of Electrical Engineers
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• v.41 no.9
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• pp.960-972
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• 1992

This paper deals with the development of expert system in distribution system which combined with graphic user interface. The proposed expert system can recognize and adjust to the system change, and includes the rule bases of security monitoring. Also it provides load transfer algorithm for efficient load distribution. The graphic user environment for expert system is implemented in the mouse-oriented user interface with overlapped window functions and pull-down menus. Therefore, the developed graphic integrated expert system can afford to assist system operators very conveniently through the various graphic function in proposing an optimal plan of load transfer for fault restoration and outage schedule.

• Transactions of the Korean Society of Automotive Engineers
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• v.3 no.1
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• pp.20-32
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• 1995

Springs for vehicle suspension control the vibration of a car and influence on the ridability, safety, and life of a car. In the paper, the computer aided design program has been developed, which design the leaf spring shape from the given specifications using basic theory and the expert's knowledge, and the design results are checked by the analysis theory in order to increase the accuracy, and feed back to the design input. For the purpose of easy use, this program consists of pull-down menu and interactive input mode. To prove the effectiveness of this program. two springs, of which one is symmetric, other asymmetric, are designed and analyzed, and the outputs are compared to the experiments. Considering the tolerance of the given specifications, the results are good.

• Korean Management Science Review
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• v.11 no.3
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• pp.47-54
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• 1994

본 연구에서는 선형계획법 프로그램을 실무용과 교육용 모두 사용할 수 있는 사용자 편의성이 강조된 선형계획법 통합환경 프로그램인 LIPED를 개발하였다. LIPED는 첫째, 풀다운(Pull Down) 메뉴 방식의 선형계획법 통합환경, 둘째, 선형계획법의 교육을 위해 여러가지 선형계획법해법 들을 통합하여 구축하였다. 셋째, 실무용으로 사용할 수 있는 안정적이고 효율적인 선형계획법 프로그램을 제공한다. 마지막으로 실험용 선형계획법 문제를 생성할 수 있는 기능과 다양한 선형계획법 입력 방식과 각 방식이 호환되도록 구축하였다. 그리고 추후연구로 교육용 LP에 Affine Scaling Algorithm, Barrier Algorithm을 추가하고, UNIX System 또는 Windows 환경하에서 통합 프로그램의 개발 및 수식 형태의 입력방식과 스프레드쉬트(Spreadsheet) 형식의 입력방식 등의 다양한 입력방식의 지원과 전문가의 지식을 연결하여 해법 선택 및 모형 구축 등을 지원할 수 있는 지능형 선형계획법 지원시스템을 구축하고 있다.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.41 no.1
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• pp.78-84
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• 2005

The main goal of this work is to study the effects of temperature and volume fraction of fiber on the Charpy impact test with GF/PP composites. The critical fracture energy and failure mechanisms of GF/PP composites are investigated in the temperature range of 60^{\circ}C$ to -50^{\circ}C$ by impact test. The critical fracture energy increased as the fiber volume fraction ratio increased. The critical fracture energy shows a maximum at ambient temperature and it tends to decreases as temperature goes up or goes down. Major failure mechanisms can be classified such as fiber matrix debonding, fiber pull-out and/or delamination and matrix deformation.

• Journal of Microbiology and Biotechnology
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• v.27 no.3
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• pp.644-647
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• 2017

Peptidyl prolyl cis/trans isomerases (PPIases) catalyze the cis/trans isomerization of peptidyl-prolyl peptide bonds preceding prolines. We investigated the protein-protein interaction between a 22 kDa PPIase (VaFKBP22, an FK506-binding protein) and the molecular chaperone DnaK derived from Vibrio anguillarum O1 (VaDnaK) using GST pull-down assays and a bacterial two-hybrid system for in vivo and in vitro studies, respectively. Furthermore, we analyzed the three-dimensional structure of the protein-protein interaction. Based on our results, VaFKBP22 appears to act as a cochaperone of VaDnaK, and contributes to protein folding and stabilization via its peptidyl-prolyl cis/trans isomerization activity.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2001.04a
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• pp.267-270
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• 2001

A lot of efforts have been made to analyze the performance of the vehicle equipped with automatic transmission through simulation. It might be necessary to understand the different types of transmissions, i.e., different power flows, for different models. If there is a module that can be applied to different types of automatic transmission, it could be helpful to transmission-related engineers. This study has started up from this idea. The common bond graph has been obtained from several types of the automatic transmission. The overall generalized equations and kinematic constraint equations have been derived using virtual power sources on common bond graph. They are used to derive state equations and constraints. These equations have been applied as an application to the vehicle equipped with two simple planetary gear set type of Ravigneaux gear type automatic transmission. The state equation, kinematic constraints, and dynamic constraints have been derived in every gear and shift operation using overall generalized equations and kinematic constraint equations. Simulations for constraint speed running, standing-start running, rolling-start running, and LA-4 mode have been conducted to analyze the performance of the vehicle powertrain using GVPS(Generalized Vehicle Powertrain Simulation) program wit pull down menus.

• 한국정보디스플레이학회:학술대회논문집
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• 2008.10a
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• pp.1305-1308
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• 2008

In this study, we redesigned the reliable integrated on-panel display gate driver that was equipped with dual pull-down as well as controlled discharge-path structure to reduce the high voltage stress effect and realized with TSMC 0.35 um CMOS-based technology before. An improved discharge path and a low noise design are proposed for our new a-Si TFT process implementation. Our novel reliable gate driver design can make each cell of shift register to be insensitive to the coupling noise of that stage.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1997.04a
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• pp.660-664
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• 1997

본 논문은 사출금형 설계를 위한 전문가 시스템의 개발에 관한 연구이다. 설계자가 오토케드 (AutoCAD)환경에서 금형부품 및 몰드베이스를 3차원 형상으로 나타낼 수 있으며 필요한 설계 데이터를 추가할수 있는 프로그램 개발에 있다. 주 프로그램은 C++를 사용하여 구축하였으며,금형부품 치수 및 몰 드베이스를 데이터베이스화 하였다. 주 프로그램과 오토캐드와 인터페이스를 하여 오토캐드 환경에서 자 유롭게 사용할 수 있도록 하였다. Pull-down menu와 Dialog box를 이용하여 금형 설계자가 금형의 각 부 품을 자유롭게 선정할 수 있으며, 각 단계별 선정된 금형부품은 즉시 나타나 설계자가 바로 확인 할 수 있도록 하였다. 이젝터 핀의 위치 및 크기를 자동적으로 나타낼수 있으며, 선정된 금형 부품 및 몰드베이 스는 2차원이나 3차원으로 나타낼 수 있다. 각각의 3차원 부품을 독립적으로 나타낼 수 있어 NC프로그램과 인터페이스가 가능토록 하였다.

• Journal of the Korean Society for Precision Engineering
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• v.15 no.2
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• pp.68-74
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• 1998

In this work, we have been concerned with developing an intelligent mold design system for plastic injection molding on the AutoCAD. We have concentrated on building a viable environment, including a mold parts database and a menu-driven user interface. This provides a more interactive and interface for selection of optimal mold-base and mold parts in mold design system. This work presents a method which allows the designer to select the mold parts and mold-base directly within an AutoCAD environment. It can also automatically generate detailed 3D drawings of the mold parts and mold-base. The system shows its potential capability for future enhancement. Since the system is independent of the data, it could easily be extended to other mold-bases and mold parts. In addition, it can be linked to the molding analysis system by creating subtracted 3-D models.

• Journal of Life Science
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• v.12 no.2
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• pp.43-46
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• 2002

Kinesin Superfamily Protein 1A (KIF1A) is an anterograde monomeric motor transporting a subset of synaptic vesicle precursors and plays an important role in neuronal function and survival. Here, f have used the yeast two-hybrid system to identify the proteins that interacts with the tail region of KIF1A. Calmodulin was found to interact specifically with the tail region of KIF1A. Calmodulin regulates many diverse cellular functions by modulating the activity of the proteins that interact with it. KIF1A interacts with calmodulin in the yeast two-hybrid assay, which is proved by immunoprecipitation with calmodulin in brain fraction. These results indicate that KIF1A is associated with calmodulin, suggesting that calmodulin may be a key role in the regulation of anterograde transport of synaptic 1 vesicle precursors.