• Journal of KIBIM
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• v.9 no.3
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• pp.30-40
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• 2019

Extraction of fabrication documents is very important because it provides information related to tasks of fabrication and construction. Therefore, in the case of a prefabricated member such as a steel structure, it is necessary to improve the productivity of fabrication documents through 3D BIM. However, research and evidence data on direct comparison analysis of 3D BIM-based documents extraction versus 2D CAD-based documents extraction are hard to find. Thus, this study focuses on productivity analysis of 3D BIM based fabrication documents extraction. In this study, the productivity data of fabrication documents extraction for module construction of EPC project was analyzed. For the productivity analysis, a case study on the fabrication documents of Module A (1,965 sheets) and Module B (1,216 sheets) was conducted. Fabrication documents for each module include general arrangement drawing, assembly drawing, single part drawing and single plate drawing. Comparison of 2D CAD based fabrication documents extraction and 3D BIM based fabrication documents extraction, the productivity for the entire work was improved from 17 hours to 16 hours for Module A and 12 hours to 7 hours for Module B. Especially, the productivity of the assembly drawings, which occupies a large part of the fabrication documents, was improved by about 48.75% from the total time required from 281 hours to 144 hours.

• Journal of the Korean Institute of Educational Facilities
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• v.16 no.5
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• pp.19-26
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• 2009

This study attempts to find out the spatial characteristics of the converging technology laboratory. For this, the understanding of the nature of converging technology and its necessary system requirements are crucial. The foremost concern lies in the 'flexibility' of the laboratory space, i.e. 'open-lab system', because of the multi-disciplinary spatial arrangement which is supposed to be open to a number of different research fields in the same building cluster. From the case analysis, this study reveals that in order to maximize the adjustability, the module based space unit plan should be considered at the earliest stage. In addition, it is also found from the analysis that the linkage of the communication spaces such as seminar room, auditorium, lounge, rest room, dining room, and corridors should be dealt with a higher degree of sophistication, since these facilitate the interaction of information at the behavioral level.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.10 no.6
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• pp.1164-1169
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• 2009

In this study, the bracket for car was designed in 3D using Cimatron Die Design, one of the automatic modules. To facilitate the stamping of the product, the layout of the strip was adjusted slightly. The blank layout of the double-width, 2-line, 2-pull out inner carrier was then optimized as a single arrangement. 3D design was completed in 11 processes.

• Proceedings of the KIEE Conference
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• 2006.07c
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• pp.1669-1670
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• 2006

LED have many problem as narrow light view angle, high price, drift phenomenon of color coordinate, high heating problem for lower power, lower weight and small size. But, with the development of blue LEDs and the improvement of LED brightness, color variation are becoming more and more popular as lighting and application devices in this page, 1 used the Light Tools which was a simulation program in order to recognize optical a few characteristic of LEDs arrangement along reflector matrial and designed LED Arranged 5 phi LED in 5mm interval In the square that was $10{\times}10$ And designs a reflection board on pcb, structural design of PCB changed as five type. - Aluminum, Gold. Chromium, Nickel, Copper.

• Honam Mathematical Journal
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• v.31 no.1
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• pp.25-29
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• 2009

In this paper, we classify essential arrangements $\mathcal{A}$ of hyperplanes in $\mathbb{R}^3$ with ${\mid}\mathcal{A}{\mid}$ = 5 and give a full description of each case in terms of freeness.

• Journal of the Chungcheong Mathematical Society
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• v.36 no.2
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• pp.77-86
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• 2023

The purpose of this paper is to show that a certain finite dimensional representation of the rational Cherednik algebra of type A has a basis consisting of simultaneous eigenvectors for the actions of a certain family of commuting elements, which are introduced in the author's previous paper. To this end, we introduce a combinatorial object, which is called a restricted arrangement of colored beads, and consider an action of the affine symmetric group on the set of the arrangements.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.9 no.5
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• pp.1113-1118
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• 2008

Strip layout design in progressive die is an important factor that determines the applicability of mass production. In this study, the layout design of bracket strips used fer automobiles was executed. The strip layout design was made in 3D with the use of Cimatron die design, an automation module rather than a 3D modeling module. Blank layout has been optimized through a layer arrangement of the wide run positioning inside carrier (double-row and two-pass type). The 3D CAD/CAM software used was Cimatron Die Design; the strip layout design was completed in ten processes.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.22 no.3
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• pp.171-179
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• 2010

Thermal performance of louver fin and plate fin in a thermoelectric cooling system with a duct-flow type fan arrangement is analytically evaluated. The thermoelectric cooling system consists of a thermoelectric module and two heat exchanger fins. The analytic results show that the optimized louver fin has lower thermal resistance than plate fin. The COP and heat absorbed rate of the thermoelectric cooling system with optimized louver fins are 10.3% and 5.8% higher than optimized plate fins, respectively.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.35 no.11B
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• pp.1579-1587
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• 2010

In this paper, we design the PCS(Physical Coding Sublayer) transmitting and receiving module for 400/1000 Ethernet and verify the performance of it through logic simulation. In this work, we defined each function module and internal/external control signals and implemented them using HDL programming language. We also designed 64B/66B encoding/decoding, scrambling/descrambling including operation mode, detection of invalid frames, and multi-lane based distribution/arrangement. It was simulated using ModelSim and verified in terms of the operation and timing according to input data. The simulation result shows that all designed modules in 400/100G Ethernet are correctly performed.

• Journal of the Society of Disaster Information
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• v.13 no.4
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• pp.519-528
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• 2017

Even in South Korea, disaster victims are suffering from various disasters such as floods, earthquakes, landslides, fires, and most of them have evacuated to temporary housing facilities for disaster victims. However, there are few plans for the placement and performance of indoor temporary housing facilities provided to secure private space in temporary housing facilities for disaster victims. In order to improve the living environment in the temporary housing facility of the victim, we constructed a module of minimum temporary accommodation area per person of 3.3 square meters, designated by the MPSS, and are proceeding with the module arrangement plan, Presented the evaluation direction of the form, material and performance of the indoor temporary housing facility.