• Proceedings of the Korean Institute of Building Construction Conference
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• 2018.05a
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• pp.151-152
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• 2018

In the domestic nuclear power industry, concern about safety of nuclear power plants is continuously increased with the Fukushima nuclear power plant accident. In order to enhance the safety of nuclear power plants, it is important to ensure that the power plants are operating with proper margin within the original design bases. Margin management is the process of ensuring that the NPP designer and operator are aware of the physical and operating limits, and potential and probability of failure, for each component in the plant. All components are subject to margin considerations, but the most important components by scope and attention are those related to safety-related systems and NPP safe shutdown.

• Korean Journal of Computational Design and Engineering
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• v.7 no.1
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• pp.34-41
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• 2002

Five-axis NC machining, in general, is utilized in fabricating impellers, turbine blades, marine propellers that can be machined more effectively rather than three-axis machining. There have been many researches concerning tool interference avoidance, optimization of tool orientation. The C-space or Configuration-space was originated from the robotics area, which depicts interference-free joint-values in motion planning. In the paper we propose an optimizing scheme by which the maximum effective-radius of a face-milling cutter can be achieved for each CC(cutter-contact) point. Also the concept of a C-space for a CC point, the effective-radius map for 5-axis face-milling, and some illustrative examples of marine propeller machining, are presented.

• Proceedings of the Korean Fiber Society Conference
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• 2001.10a
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• pp.101-102
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• 2001

The control of the stereochemistry during the radical polymerization of vinyl monomer has been a long standing concern and is still one of the most important topic in synthetic polymer chemistry.[1-5] The stereoregularity of vinyl polymers often has significant effect on the properties of polymer materials. Therefore, it is important to devise methods to control stereoregularity during the polymerization reactions. (omitted)

• IEIE Transactions on Smart Processing and Computing
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• v.4 no.4
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• pp.251-257
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• 2015

This work presents modelling and simulation of a readout integrated circuit (ROIC) design considering pair-wise serial configuration along with thermal modeling of an uncooled microbolometer array. A fully differential approach is used at the input stage in order to reduce fixed pattern noise due to the process variation and self-heating-related issues. Each pair of microbolometers is pulse-biased such that they both fall under the same self-heating point along the self-heating trend line. A ${\pm}10%$ process variation is considered. The proposed design is simulated with a reference input image consisting of an array of $127{\times}92$ pixels. This configuration uses only one unity gain differential amplifier along with a single 14-bit analog-to-digital converter in order to minimize the dynamic range requirement of the ROIC.

• Korean Institute of Interior Design Journal
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• no.39
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• pp.108-115
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• 2003

The first object of this study is to clarify the newly demanded service to the visitor in a museum. And the second is to consider the Spatial Configuration on the layout of exhibition and shape of exhibition space from the view points of behavior of appreciation and other methodology, The results of this study are as follows : 1) Museums are required to offer sufficient service to the visitor for the purposes of interest, learning and sight-seeing 2) A strategic space where we can penetrate the whole room is required at the entrance of the room for the easy choice of exhibits. 3) The entrance of the room is suggested to be the most controled space.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2005.05a
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• pp.159-163
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• 2005

The purpose of this study was to analyze the relationship between the product characteristics and spatial configuration in a retail store. This study utilized the analytical method of Space Syntax, and the software package used for the analysis was New-wave and Pesh. The qualitative study focused on the showroom of 'H INTERIOR', a leading furniture company in Korea, and examined the accessibility of the space. The result showed that the main accessible route was well established in the retail store, and more trendy and fashionable products were likely to be displayed in more accessible places. Also, the products in the selected showroom were arranged according to the pricing information, so that products with lower price were displayed in more accessible places. This study suggested that it be important to adequately and appropriately display the products in relation to the characteristics of products, and implied that the method of Space Syntax was useful to strategically evaluate the display in retail spaces.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2005.05a
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• pp.168-171
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• 2005

A movement of visitor is a practical means that provides a spatial arrangement of exhibits and validity to that principle. Thus, an exhibition of a museum cannot be completed by an intrinsic value of exhibition itself. Rather, the meaning and value of exhibition can be genuinely evaluated by a visitor's experience and reactions. Therefore, focusing on an correlation between exhibits' spatial configuration and a behavior in a museum, this thesis will establish effective indicators of analysis and their validity in predicting a frequency of visitor's visit depending on the structural form of exhibition space.

• IE interfaces
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• v.8 no.2
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• pp.135-150
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• 1995

An object-oriented simulation modeling environment, AgvTalk, is presented to provide flexible modeling capabilities for simulation of many alternative AGV systems. The hierarchical features and modularity of AgvTalk create possibilities for the extension and reuse of simulation object components. Also, detailed behavior of each object in the AGV system can be modeled easily and exactly in AgvTalk because there are no limiting modeling constructs. The modeling capabilities of AgvTalk is demonstrated by designing and simulating a conceptually different configuration of AGV systems, known as, the tandem configuration. Between the tandem and conventional AGV systems, the characteristics and design methodology in AgvTalk are described. Also, simulations between two systems are compared with AgvTalk in the job shop environment.

• Journal of the Korea Institute of Military Science and Technology
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• v.16 no.4
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• pp.435-440
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• 2013

In this paper, a design method of the simulation program for HILS(Hardware-In-the-Loop Simulation) system is proposed. The present method consists of definition of requirements for HILS, development of specifications, and implementation of the program to satisfy the specifications. In the implementation of the program, the application of hardware interface and the concept of structural modularization are proposed to satisfy the specifications. The concepts of CSCI(Computer Software Configuration Item) and encapsulation are used for structural modularization. The proposed method was practically applied to the development of the simulation program for the efficient operation in HILS of an anti-ship missile system.

• Journal of Korean Society for Quality Management
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• v.21 no.1
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• pp.44-54
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• 1993

Factory Automation is being implemented rapidly in almost of industries. This new trend and technology have a great influence on even traditional quality control system, and make it be changed with new approaches and methodologies. In these environments, this study has brief review on automation and quality control system, gives checkpoints of the automation system design with the viewpoint of quality control. Also this study proposes a detail system configuration and specifications of each system conponent in the configuration. In the last, a brief implementation guideline for the automation system in the scope of information technology is also presented.