• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2012년도 춘계 종합학술대회 논문집
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• pp.165-166
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• 2012

The School Management Information System (SMIS) is important to accomplish educational mission. To reach the goal, it is necessary to know the rules, culture of school and related data prior to building the SMIS. This study is related with an attempt to develop the SMIS in Indonesian case. There are more than 240 million inhabitants in 33 provinces, and only six official religions which are recognized by the Indonesian government. Based on National Education Standards, the EPC diagram in the ARIS tool is used to design the process of the SMIS. For the implementation of the SMIS, the Use Case diagram and Sequence diagram are constructed by Together 2008.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 심포지엄 논문집 정보 및 제어부문
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• pp.134-136
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• 2007

Sequential Function Chart(SFC) is very easy to grasp the sequential flow of control logic and has the compatability for a maintenance, In process control, when an error is occurred, to execute other routine by force, we control the process by remote control. In this paper, we proposed the method of select sequence control by remote control in process control designed by Sequential Function Chart(SFC).

• International Journal of Precision Engineering and Manufacturing
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• 제6권1호
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• pp.42-50
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• 2005

In order to increase competitiveness and to gain economic benefit, companies ask more and more how to recycle their products in an efficient way. So far, to answer this question, companies are not sufficiently supported by suitable methods specially in the area of disassembly process planning. For this reason, we develop in collaboration with an industrial partner a new method for generating an optimal disassembly sequence. In this paper this method will be described in detail by considering the exiting assembly information, disassembly method and disassembly depth. PLM(Profit-Loss Margin) curve that is used to determine disassembly depth consists of profit value, disassembly cost and disassembly effect. Using assessment parameters, generated alternative disassembly sequences are evaluated and an optimal disassembly sequence is proposed. This method is applied to generate the optimal disassembly sequence of Door Trim as an example.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2011년도 추계학술대회
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• pp.371-374
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• 2011

UML은 객체지향 개념을 매우 잘 설명하고 있으며 요구 분석 단계에서 시스템 기능을 분석하기 위한 유스케이스 다이어그램과 도메인의 객체들을 개념적으로 표현한 클래스 다이어그램을 지원하고 있으며, 설계 단계에서 클래스 내부적인 연결을 보기 위한 시퀀스 다이어그램을 지원한다. 객체지향을 지원하는 대표적인 비주얼 기반 언어인 LabVIEW OOP는 직관적인 설계 도구로서 설계와 동시에 실행할 수 있는 개발 도구이다. 그러나, LabVIEW OOP 역시 시스템 개발자가 시스템을 설계하기 위해 설계 단계에서 객체지향 개념을 잘 표현하고 이해할 수 있는 방법이 필요하다. 논문에서는 객체지향 개념을 표현하는 UML을 이용하여 설계된 모델링을 LabVIEW OOP로 설계 시에 적용 가능한 기법을 제안한다.

• 한국산학기술학회논문지
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• 제11권1호
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• pp.107-112
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• 2010

PLC를 사용한 제어시스템에서 SFC 언어를 사용하면 전체 공정의 흐름을 이해하기 쉽고 유지보수가 용이하다. SFC 언어는 단일 시퀀스, 선택 시퀀스, 병렬 시퀀스로 나누어지고, 여러 조건에 맞게 처리하는 선택시퀀스로 프로그램 할 때 선택분기 스텝에 에러가 발생하면 전체 공정이 정지하게 된다. 이 에러스텝이 전체 공정에 크게 영향을 안주는 공정이라면 전체 공정을 정지시키지 않고 에러를 처리하면 손실은 줄어들게 된다. 본 논문에서는 선택시퀀스에서 리모트 콘트롤을 사용하여 선택시퀀스를 효율적으로 제어하는 방법을 제시하고 적용 예를 통해 그의 타당성을 확인하였다.

• Korean Journal of Mathematics
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• 제14권2호
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• pp.217-226
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• 2006

In this paper, we investigate the mutual relation among short exact sequences of amalgamated free products which involve augmentation ideals and relation modules. In particular, we find out commutative diagrams having a steady structure in the sense that all of their three columns and rows are short exact sequences.

• 대한수학회지
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• 제60권6호
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• pp.1215-1231
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• 2023

In this paper, we investigate the nonnil-exact sequences and nonnil-commutative diagrams and show that they behave in a way similar to the classical ones in Abelian categories.

• 천문학회보
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• 제39권2호
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• pp.48.1-48.1
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• 2014

We investigate the evolution of galaxies in mid-infrared (MIR) $[3.4{\mu}m]-[12{\mu}m]$ color versus $12{\mu}$ luminosity diagram using Wide-field Infrared Survey Explorer data for member galaxies of the A2199 supercluster at $z{\simeq}0.03$. In the MIR color-luminosity diagram, we classify galaxies into three MIR classes: MIR blue cloud (massive, quiescent and mostly early-type), MIR star-forming sequence (mostly late-type), and MIR green valley galaxies. Both MIR green valley galaxies and MIR blue cloud galaxies are optically red sequence populations, and there is no significant difference in star formation rates and stellar masses between them. We compare cumulative distribution functions of surface galaxy number density and of cluster/group-centric distance between three MIR classes. However, when considering only early-type galaxies, the difference between MIR blue cloud galaxies and MIR green valley galaxies disappears. In contrast, the intermediate trend of MIR green valley galaxies is still found for late-type galaxies. We discuss our results concerning the difference of evolution between early- and late-type galaxies and the connection to environment.

• 천문학회지
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• 제22권1호
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• pp.63-79
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• 1989

Current estimates, based on the same star-count analysis, of the distance to the globule Bamard 361 range from 300 pc to 650 pc. All the problems associated with the estimates have been fully rectified in this study, and a modification has been made to the classical Wolf diagram to improve the accuracy in the distance determination. A reference field was carefully selected close to the globule but well outside the globule boundary, and star counts for this field were performed on the blue POSS plate in order to set up the reference magnitude sequence appropriate to the general area of B 361. From the reference sequence, the stellar density function has been derived specifically for the direction toward the globule. Correction was made for the general interstellar extinction, and the luminosity function with the Wielen's dip was adopted. The resulting density function clearly reveals the existence of the local Cygnus-Orion arm in the direction of B 361 at about 700 pc away from the Sun. Analysis of the star-count data for the program field locates the globule at distance $600{\pm}50$ pc ; thus, the globule is an object located in the Cygnus-Orion arm, residing somewhat toward its leading edge.

• 천문학회보
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• 제36권1호
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• pp.59.1-59.1
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• 2011

We report the HST pixel analysis results of the interacting S0 galaxy, NGC 5195 (M51B), using the HST/ACS images in the F435W, F555W and F814W (BVI) bands. After 4x4 binning of the HST/ACS images to secure sufficient signal-to-noise ratio for each pixel, we derive several quantities describing the pixel color-magnitude diagram (pCMD) of NGC 5195, such as blue/red color cut, red pixel sequence parameters, blue pixel sequence parameters and blue-to-red pixel ratio. Those parameters reflect the internal properties of NGC 5195 like age, metallicity, dust content and galaxy morphology. To investigate the spatial distributions of stellar populations, we divide pixel stellar populations using the pixel color-color diagram and population synthesis models. As a result, we find that the tidal interaction with NGC 5194 significantly affects the stellar populations in their dust content and mean stellar age.