• Proceedings of the Korea Information Processing Society Conference
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• 2002.04b
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• pp.931-934
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• 2002

현재의 e-비즈니스 환경은 단순히 웹사이트를 구축 및 운용하는 차원을 넘어, 시간이 지남에 따라 급격한 진화 과정을 거치고 있다. 진화의 초점으로 떠오르고 있는 웹서비스 중 SAML(Security Assertions Markup Language)은 사용자 인증 정보 교환에 관한 프레임워크로 OASIS XML 보안 서비스 기술 위원회(OASIS XML-Security Service Technical Committee)에서 표준화 작업을 진행하고 있다. SAML은 S2ML(Security Services Markup Language)의 원리와 구조를 재사용해서 S2ML의 이점을 공유 하고 Single Sign-On, 인증 서비스, B2B Transaction, Sessioning같은 기능을 가진다. 그로 인해 다양한 정책기반의 산업에서 보안 시스템, 자바 어플리케이션 서버, XML 메시징 프레임워크와 오퍼레이팅 플랫폼사이에 인증, 승인과 함께 프로필 정보를 교환하기 위해 사용된다. 본 논문에서는 SAML의 범위와 목적 그리고 유즈케이스 모델과 시나리오를 통해 기본 구조와 쓰임새에 대해서 알아본다.

• The Bulletin of The Korean Astronomical Society
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• v.45 no.1
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• pp.60.2-60.2
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• 2020

In the hierarchical framework, galaxies grow through mergers and accretion. Those mechanisms leave faint features, such as stellar streams, shells and smooth stellar halos in the outskirts of galaxies. In order to search for those features in the nearby galaxies, we are conducting a KMTNet Nearby Galaxy Survey using the Korea Microlensing Telescope Network. We present a deep and wide-field imaging of NGC 5236, a barred spiral galaxy. In one-dimensional surface brightness profiles, we reach 28, 29 mag/arcsec2 in the R- and B-band, respectively. We find that the outer disk of NGC 5236 can be well described with a single exponential profile up to 17 kpc (~3.8 Reff) indicating that the excess light due to the stellar halo is not clearly detected. B-R color gradually increases towards the outskirts of the galaxy. It may reveal that stellar properties in the outskirts are marginally distinctive from those in the central part.

• IE interfaces
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• v.15 no.4
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• pp.444-451
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• 2002

Recently, the interest in technology valuation is revived and increasing mainly due to the lack of suitability of the traditional valuation methods in explaining the market reaction to newly-emerging knowledge-oriented companies. Moreover, many firms are now gearing their efforts to the strategic use of technology asset such as technology licensing, transfer and commercialization. Firms are also trying to enhance their technological competitiveness by re-evaluating their technology level and thus identifying the strengths/weaknesses of their technology portfolio. To accomplish this objective, the development of an integrated evaluation system for technology assets is essential. This paper presents a technology valuation system developed for a steel manufacturing company in South Korea. The valuation framework is based on; (1) the multi-attribute evaluation of technological competitiveness using Analytic Hierarchical Process and; (2) the expected future benefit of the technology using four different methods of discounted cash flow estimation. The suggested framework will be easily applicable to various industries where technological competitiveness should be evaluated systematically.

• Journal of Global Scholars of Marketing Science
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• v.18 no.2
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• pp.1-18
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• 2008

The objective of this paper is to describe the construct of bullwhip effect beyond supply chains, namely at industrial and societal levels. The author provides a conceptual discussion of the bullwhip effect - its derivation is extended, and the positioning of the construct is broadened. The bullwhip effect has been explored within intra-organisational and inter-organisational supply chains. A broader descriptive framework is introduced, one that positions the bullwhip effect construct at industrial and societal levels. A conceptual framework is provided that bridges the interface between the micro and macro environments of the bullwhip effect construct, but further conceptualization is required. The introduced derivation and positioning of the bullwhip effect construct reveal a number of research potentials. A principal one is that the exploration of the construct may consider the industrial and/or the societal environment when the bullwhip effect is studied in supply chains. The extended derivation and broadened positioning of the bullwhip effect in the overall environment is of interest to practitioners. It stresses the importance of contextual factors in operative, tactical and strategic supply chain performance. The principal contributions are: a) an interface between micro and macro levels in supply chain performance contributing to an extended derivation of the bullwhip effect; b) a typology of the bullwhip effect contributing to broadening the positioning of the same construct; c) the bullwhip effect being seen as two-way view construct at the micro level and d) a framework ofmanagerial implications. Most important of all is that the causes and effects of the bullwhip effect have been addressed in a wider context that so far has been underestimated in literature.

• 한국정보컨버전스학회:학술대회논문집
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• 2008.06a
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• pp.145-150
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• 2008

This thesis explores the problem of reconstructing a three-dimensional(3D) scene given a set of images or image sequences of the scene. It describes efficient methods for the 3D reconstruction of static and dynamic scenes from stereo images, stereo image sequences, and images captured from multiple viewpoints. Novel methods for image-based and volumetric modelling approaches to 3D reconstruction are presented, with an emphasis on the development of efficient algorithm which produce high quality and accurate reconstructions. For image-based 3D reconstruction a novel energy minimisation scheme, Iterated Dynamic Programming, is presented for the efficient computation of strong local minima of discontinuity preserving energyy functions. Coupled with a novel morphological decomposition method and subregioning schemes for the efficient computation of a narrowband matching cost volume. the minimisation framework is applied to solve problems in stereo matching, stereo-temporal reconstruction, motion estimation, 2D image registration and 3D image registration. This thesis establishes Iterated Dynamic Programming as an efficient and effective energy minimisation scheme suitable for computer vision problems which involve finding correspondences across images. For 3D reconstruction from multiple view images with arbitrary camera placement, a novel volumetric modelling technique, Embedded Voxel Colouring, is presented that efficiently embeds all reconstructions of a 3D scene into a single output in a single scan of the volumetric space under exact visibility. An adaptive thresholding framework is also introduced for the computation of the optimal set of thresholds to obtain high quality 3D reconstructions. This thesis establishes the Embedded Voxel Colouring framework as a fast, efficient and effective method for 3D reconstruction from multiple view images.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.37 no.2B
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• pp.120-129
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• 2012

Wireless mesh network (WMN) has recently emerged as a promising technology for tactical operation. If a platoon is organized with MPs, this system is suitable for tactical coverage is given for battle field where there is a shortage of wired infrastructure. However, MPs of typical WMN are generally fixed. This condition does not apply to diverse tactical scenarios. In this paper, it is considered that MPs have group mobility for flexible tactical networks. We propose cluster based multi-channel MAC scheme for mobilie WMN with single antenna condition. We have reduced the collision problems and message storming problems occur by mobility, so the reliability of WMN has been improved. Consequently, reliable communication is guaranteed by our framework in mobile WMN.

• Journal of Astronomy and Space Sciences
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• v.24 no.1
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• pp.31-38
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• 2007

We have investigated the evolutionary status of 85 Peg within the framework of standard evolutionary theory. 85 Peg has been known to be a visual and spectroscopic binary system in the solar neighborhood. In spite of the accurate information of the total mass (${\sim}1.5M_{\odot}$) and the distance (${\sim}12pc$) from the HIPPARCOS parallax, it has been undetermined an individual mass, therefore the evolved status of the system. Moreover, the coupled uncertainties of chemical composition and age, make matters worse in predicting an evolutionary status of the system. Nevertheless, we computed the various possible models for 85 Peg, and then calibrated stellar parameters by adjusting to the recent observational data. Our modelling computation has included recently updated input physics and stellar theory such as opacity, equation of state, and chemical diffusion. Through a statistical assessment, we have derived a confident parameter set as the best solution which minimized $X^{2}$ within the observational error domain. Most of all, we found that 85 Peg is not a binary system but a triple system with an unseen companion 85 Peg $B_{b}\;{\sim}0.16M_{\odot}$. The aim of the present paper is (1) to provide a complete modelling of the stellar system based on the evolutionary theory, and (2) to constrain the physical dimensions such as mass, metallicity and age.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2006.05a
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• pp.1290-1298
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• 2006

오늘날 B2B 전자상거래의 폭발적인 성장과 더불어 SCM상에서 e-Procurement의 중요성이 부각되고 있다. 그 중에서 다수의 구매자와 공급자가 참여하여 다양한 형태의 상거래를 수행하는 3자 관리 모델은 점차 시장이 확대되어 e-Procurement의 핵심요소로 여겨지고 있다. 하지만 현재의 e-Procurement의 3자 관리 모델은 방대한 제품 정보 중에서 구매자가 원하는 제품을 정확히 검색할 수 있는 기능이 미비하고 구매 물량에 따른 할인 가격과 공급자의 배송 정책을 고려한 납기일을 실시간으로 구매자에게 제공해 줄 수 있는 기능이 미흡한 실정이다. 또한 구매 프로세스의 주요 기능인 공급자의 선택에 있어 공급자에 대한 신뢰성이 결여되어 구매자의 비즈니스 요구사항을 채워주지 못하고 있다. 본 연구에서는 이러한 e-Procurement의 3자 관리 모델의 문제점을 해결하고 발전시키기 위해 (1)구매자의 제품 검색 시 시맨틱 웹을 이용한 카테고리 기반 검색 기법과 (2)비즈니스 룰과 웹서비스 기반으로 공급자의 가격 정책, 배송 정책에 따른 납기일을 고려한 검색, (3)구매자와 공급자의 단일 거래에 대한 서비스 품질을 측정하여 구매자에게 공급자의 신뢰성을 보장하는 제품 추천 e-Procurement 시스템을 제안한다.

• Journal of Arbitration Studies
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• v.13 no.2
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• pp.425-457
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• 2004

This study is to approach e-Trade issues and how to settle the dispute for e-Trade according to on-line Alternative Dispute Resolution (ADR) process. Most on-line systems operate on a limited access basis. The increasing use of the internet to do business brings to light at least important concerns to persons who engage in commerce on-line, or e-Trade. There is some concern about the limits of current internet technology to guarantee the security of e-Trade. The new technology has transformed society and is defining new years of doing business. This revolution in technology has even changed the nature of many of the goods and services that are the subjects of e-Trade. There is also concern about the limits of the legal framework to guarantee the enforcement of e-Trade. A significant issue is how the law should be adapted to reflect business practices regarding such cyberspace agreements as Web site click-on agreements, e-data interchange, and on-line sales. The principal benefits of on-line ADR should typically be faster and less expensive than traditional conciliation arbitration. The on-line ADR system has the several significances, decreasing inappropriate cost as time and burden of ADR, providing an approachable measure of relief and more efficient tool for the settle of dispute. Therefore, on-line ADR could be used as an adjunct resolution process in large class actions where each single claim is small, but varies somewhat, thus requiring some individual fact determination.

• Korea Science and Art Forum
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• v.23
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• pp.111-122
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• 2016

The purpose of this multi-disciplinary convergent study is to establish Image Copyright Archive Model for Museums to protect image copyright and vitalize the use of images out of necessity of research and development on copyright services over the life cycle of art contents created by the museums and out of the necessity to vitalize distribution market of image copyright contents in creative industry and to formulate management system of copyright services. This study made various suggestions for enhancement of transparency and efficiency of art contents ecosystem through vitalization of use and recycling of image copyright materials by proposing standard system for calculation, distribution, settlement and monitoring of copyright royalty of 1,000 domestic museums, galleries and exhibit halls. First, this study proposed contents and structure design of image copyright archive model and, by proposing art contents distribution service platform for prototype simulation, execution simulation and model operation simulation, established art contents copyright royalty process model. As billing system and technological development for image contents are still in incipient stage, this study used the existing contents billing framework as basic model for the development of billing technology for distribution of museum collections and artworks and automatic division and calculation engine for copyright royalty. Ultimately, study suggested image copyright archive model which can be used by artists, curators and distributors. In business strategy, study suggested niche market penetration of museum image copyright archive model. In sales expansion strategy, study established a business model in which effective process of image transaction can be conducted in the form of B2B, B2G, B2C and C2B through flexible connection of museum archive system and controllable management of image copyright materials can be possible. This study is expected to minimize disputes between copyright holder of artwork images and their owners and enhance manageability of copyrighted artworks through prevention of such disputes and provision of information on distribution and utilization of art contents (of collections and new creations) owned by the museums. In addition, by providing a guideline for archives of collections of museums and new creations, this study is expected to increase registration of image copyright and to make various convergent businesses possible such as billing, division and settlement of copyright royalty for image copyright distribution service.