• Proceedings of the Korean Operations and Management Science Society Conference
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• 2008.10a
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• pp.147-151
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• 2008

신제품 또는 신기술이 도입되는 시장에서는 보통 선두 진출자가 먼저 시장을 개척하고 나중에 후발 기업이 시장에 진출한다. 시장 진출자는 생산능력이 과한 경우 과투자의 위험이 존재하는 반면, 부족한 경우 잠재고객의 수요에 적절히 대응하지 못하여 고객을 유치하지 못하게 된다. 또한 신규 시장에서 선두 진출자의 광고효과는 시장 규모를 키움으로써 자신의 입지뿐 아니라 후발 주자의 몫까지 키워주는 양날의 칼과 같은 역할을 한다. 그렇다면, 선두 진출자가 취할 수 있는 최적의 생산능력 확장 정책과 광고 정책은 어떻게 결정할 수 있을까? 본 연구에서는 신제품이 도입되는 시장에서 선두 진출자가 경쟁자의 시장 진입을 예상하는 경우, 기존 시장 진출자가 취할 수 있는 생산 능력 확장 정책과 광고 수준에 대한 의사 결정모형을 수립하기 위해 Bass의 확산 모형을 확장하여 적용하였다.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 1995.11a
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• pp.143-147
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• 1995

The space charge formation in polyethylene (PE)/ethylene n-butyl acrylate (EnBA) blends were investigated. Heterocharge was found in PE and EnBA containing 5 mole% of nBA while homocharge was found in EnBAs containing 19 and 20% of nBA. All PE/EnBA blends except the one with the EnBA containing 5% nBA showed heterocharge formation. Heterocharge was also found in crosslinked PE/EnBA blends, which was attributed to the volatile residuals generated by the thermal decomposition of peroxide.

• 한국정보디스플레이학회:학술대회논문집
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• 2008.10a
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• pp.633-636
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• 2008

A series novel films of polyimide (PI) and co-polyimide (Co-PI) containing fluorine with colorless, flexible properties was prepared by a two-step process from various commercial aromatic monomers such as 4,4'-(Hexafluoro iso propylidene) diphthalic anhydride (6FDA), 2,2'-Bis(Trifluoromethyl) benzidine (TFDB), 2,2-bis(3-amino-4-hydroxyphenyl) hexafluoropropane (AH6FP) and Bis(4-(3-aminophenoxy)phenyl)sulfone (BAS). Furthermore, these obtained transparent and flexible Co-PI films exhibited excellent thermal stability with the decomposition temperature (at 5% weight loss) around of $500^{\circ}C$ and the glass transition temperature ($T_g$) in the range of $275-350^{\circ}C$.

• The Journal of the Society of Korean Medicine Diagnostics
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• v.12 no.2
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• pp.96-106
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• 2008

Background and purpose : Health is characterized by variability and a loss variability is associated with aging and disease. Normal healthy respiratory patterns are characterized by breath to breath variability. Cold-Heat score are quantified indices in Korean Medicine. The aim of this study is to analyze relations between 9 respiratory indices (including breath to breath variability) and cold-heat score by questionnaire. Method : Respiratory data were measured during 15 minutes and transferred to text file. We calculated 9 respiratory parameters in use of MATLAB7.1. After then we did correlation analysis of 9 respiratory indices and cold-heat score Results and conclusion : EIratio is showed significant correlation with Cold score and weighted Heat score.

• Proceedings of the KIEE Conference
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• summer
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• pp.572-574
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• 2004

The configuration of Distribution Automatic System(BAS) is dual servers and raid 5(redundant arrays of inexpensive disks) clustering dual HDD. The DAS has the distributed object-oriented architecture using middleware software(BASEstar), so the number of client nodes has no limitation. Because the DAS is scalable, it can be configured using various application programs and be upgraded easily. The DAS has competitive to export because there are system development and accumulation of technology that coincide in International Standard, using common 05 and DB. This paper describes the structure of DAS hardware and software separately and proposes to improve program to share real time DB efficiently at each node.

• 제어로봇시스템학회:학술대회논문집
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• 2001.10a
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• pp.63.6-63
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• 2001

For robot navigation and visual reconstruction , structure from motion (SFM) is an active issue in computer vision community and its properties are also becoming well understood. As a drawback in SFM, it is well known that the SFM methods, using small motion model such as optical flow and direct method, have inevitably motion ambiguity between translation and rotation, which is called bas-relief ambiguity. In this paper based on the robust direct method using stereo image sequence, we present a new method for improving those ambiguities. Basically, the direct method uses nearly all image pixels for estimating motion parameters and depths, and global optimization techniques are adopted for finding its solution ...

• Journal of Institute of Control, Robotics and Systems
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• v.10 no.4
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• pp.334-340
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• 2004

In this paper, a Web-based management system for the building network is described. A multi-protocol converter based on SoC and embedded Linux is designed. The open source licensing, reliability, and broad hardware support are key reasons for use of embedded Linux in embedded industry. The multi-protocol converter integrates control network of RS-485 and LonWorks devices through TCP/IP protocol for a client with Java applet. The system consists of three-tier architecture, such as a client, a server that is performed on a multi-protocol converter, and control devices. The developed system includes the inverter motor control system with modbus protocol for the RS-485 network. The experiment results show that the multi-protocol converter using embedded Linux is a flexible and effective way to builda Web -based monitoring and control system.

• Journal of the Korean Home Economics Association
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• v.18 no.4
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• pp.1-11
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• 1980

A la suite de notre essal " Etude sur le Costume Byzantin", o nous avions d cel le probl me du costume au niveau de l'art pur qui r pond un besoin primitif consistant ext rioriser et concr tiser les id es dans l'esprit humain, nous avons essay cette fois de consid rer le m me probl me, c'est- -dire le probl me de composition de formes des costumes, travers ceux de Louis XIV et la classe des nobles, relativement l'arri re-plans de la soci t . Le style de costumes baroques consiste pritncipalement embellir l' tre de roi, pare la vie de palais et composer les costumes de la classe des nobles pour accentuer leurs luxe, majest , l gance, dignit etc., tant bas sur r gime monarchique et mercantilisme,en les faisant avec le brocart, le velours et la soierie de couleurs somptueuses, enjoliv s de broderie, ruban et dentelle.

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.6 no.3
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• pp.77-84
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• 2007

As a life cycle of product bas shortend, Rapid prototypiug has come into the spotlight to shortened the time of producint a prototype. But It followed in laminated directivity and of the prototype production which is decided the interference which Beccuase of invisible rough surface, some inferences have occured during an assembly hour. Consequently, This study on rapid prototyping has parameter to determine surface roughness and surface form precision of total shape. In order to improve Surface form precision, it can control parameters which are Laminate Height, Layer Hatch Overcue, Fill Cure Depth. In addition, we found the parameter which have a deep effect on surface roughness among various parameters, and then, tried to reduce the interference that can be occurred by surface roughness during assembly.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 1996.04a
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• pp.487-490
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• 1996

일반적으로 S자 형태의 누적수요곡선을 따르는 단일 신상품과는 달리 다세대 신상품은 세대간의 진화.대체과정에 의하여 다른 형태의 성장곡선을 따른다. Norton & Bass(87)에 의해 개발된 다세대 확산모형은 단일 신상품만을 주로 다루어온 기존의 확산이론을 확장하여 상품들간의 연관관계를 고려한 모형화를 시도하였다는 점에서 큰의의를 지니고 있다. 그러나 Norton & Bass 모형은 누적수요가 감소하는 경우에만 적용 가능한 모형으로 그들이 논문에서 분석한 전세계 반도체 시장의 경우에는 적용될 수 없는 모형이다. 그들은 신규수요를 누적수요모형에 잘못 적용하는 오류를 범하고 있다. 그들이 제안한 모형은 서비스 상품들의 대체를 설명할 수 있는 모형으로 국한된다. 본 연구에서는 재화재의 경우에 적용 가능한 모형을 개발하며 또한 개발된 모형을 Norton & Bass가 잘못 적용했던 전세계 DRAM 시장에 응용한다.