• Journal of Broadcast Engineering
• /
• v.10 no.2
• /
• pp.190-201
• /
• 2005

MPEG-21 has identified the need fur Event Reporting in its vision for an interoperable multimedia framework. Event Reporting is required within the MPEG-21 multimedia framework in order to provide a standardized means for sharing information about Events amongst Peers and Users. Such Events relate to Digital Items and/or Peers that interact with them. Arising from an each Event, there is the opportunity to describe what occurred. However, there are a number of difficulties in providing an accurate report about an Event. Different observers of the Event may have vastly different perspectives, needs, and focuses. They may emphasize certain elements to the detriment of others, or they may describe an Event in a way that others may find confusing. In this paper, we design how to express Event Reporting message structure and system architecture in compliance with ISO/IEC 21000-15. And we implement the system for MPEG-21 Event Reporting service.

• Proceedings of the Korean Society of Broadcast Engineers Conference
• /
• 2005.11a
• /
• pp.229-232
• /
• 2005

현재 디지털방송 서비스가 확대되고 있는 시점에서 방송콘텐츠 보호에 대한 중요성이 날로 부각되고 있다. 이에 MPEG-2 IPMP는 디지털방송 서비스를 제공받아 소비하는 방송 단말로부터 방송콘텐츠를 불법적으로 사용할 수 없도록 보호할 수 있게 정의하고 있는 대표적인 국제 표준 규격이다. IPMP 규격을 기반으로 한 방송 단말을 구현함에 있어 보호된 방송콘텐츠를 IPMP 툴로 처리하여 소비하게 되는데 만약 방송 단말에 IPMP 툴이 없다면 방송되고 있는 MPEG-2 전송스트림이나 원격지에서 필요한 IPMP 툴을 다운로드 받아 방송 단말에 업데이트를 시켜야 한다. 이때 방송 단말에서 위와 같은 기능이 구현되기 위해서는 구체적인 소프트웨어 설계 방식을 통해 다양한 플랫폼에 대해 구현된 기능에 대한 재사용성이나 호환성을 확보하는 것이 효율적이다. 하지만 점차적으로 복잡해지고 다양해지는 멀티미디어 기기들의 기능들을 위해 탑재되는 소프트웨어 역시 복잡해지고 있어 그 재사용성이나 호환성이 떨어지고 있는 실정이다. 본 논문에서는 이러한 소프트웨어의 재사용성이나 호환성을 최대한 보장할 수 있도록 현재 MPEG(ISO/IEC JTC1/SC29/WG11)에서 표준화가 진행 중인 MPEG Multimedia Middleware(M3W) 규격을 기반으로 한 소프트웨어 설계 방식을 살펴보고, 디지털방송 단말에서 IPMP 툴 업데이트 기능이 효율적으로 설계되고 구현될 수 있는 소프트웨어 구조를 제안하였다.

• Journal of KIISE:Information Networking
• /
• v.28 no.3
• /
• pp.355-368
• /
• 2001

Protocol conformance test is used to promote interoperability of protocol implementatons developed by venders. Non-interopcrability between protocol implementations may be caused by ambiguity and/or misintellJretation of the protocol specifications by vendors. Conventional method on protocol conformance test has been standardized by IS0;IEC JTCI with the purpose of whether a protocol implementation conforms to its specification. However, sometimes the conventional method gives wrong test results because the test is based on static test sequences. This problem is caused by the fact as some failed transitions of a protocol FSM included in test sequences have an effect on the test result of transitions to be tested. In this paper, a new approach called Dynamic Conformance Test Method (DCTM) is proposed to solve this problem. DCTM dynamically selects test sequence durng testing depending on an information showing an alternative path without failed tranistions. As a result, the fault coverage of the DCTM is better than that of the conventional test method. In order to demonstrate the fault coverage of DCTM compared to that of the conventional method. a testing tool is implemented and appied to the TCP protocol.

• Journal of the Korean BIBLIA Society for library and Information Science
• /
• v.29 no.1
• /
• pp.47-72
• /
• 2018

The quality of records determines the value of records as assets in the digital age. It depends on how consistently record requirements can be applied during the records production and utilization processes using mostly IT systems. Therefore, the importance of effective records management (RM) governance applied for all organizational areas cannot be emphasized enough. The purpose of this paper is to propose a new framework of RM governance in order to produce and manage more valuable records, and the way to implement it in an organizational context. For the purpose, this paper discusses the necessity of a governance framework to formulate and operate consistent policies and procedures for overall processes of production, distribution, utilization and protection of records based on the values of evidence and information. Next, it proposes an integrated model by linking the management framework of the Information Governance Reference Model (IGRM) and the Management System for Records standards (ISO 30300 series; MSR) for the effective RM governance to be implemented in an organizational context.

• Journal of Intelligence and Information Systems
• /
• v.5 no.2
• /
• pp.43-61
• /
• 1999

국방정보체계는 종류가 다양하고 대규모로 추진되기 때문에 소프트웨어 개발을 위한 사업관리에 어려움이 많이 따른다. 더구나, 현재 국방정보체계의 사업관리는 자동화시스템을 이용하여 체계적으로 실시하지 않고 수동으로 처리하기 때문에 많은 문제점이 야기되고 있고 현재의 소프트웨어 개발 표준인 ISO 12207을 수정 없이 그대로 대규모 실시간 국방정보체계의 소프트웨어 개발사업에 적용하는 것도 한계가 있다. 따라서 본 논문의 목적은 효율적인 국방정보체계 소프트웨어 개발 사업관리를 위해서 국방정보체계별로 적절한 개발 생명주기 모델을 선정하고, 각 단계별로 사업관리자가 수행할 태스크를 식별하는 등의 도메인 지식을 개발하여 궁극적으로 국방정보체계 사업관리용 전문가 시스템을 개발할 때 활용함과 동시에 국방정보체계 사업관리의 일환으로 최종 산출물에 대한 품질을 높일 수 있도록 체계적인 시험평가 방안에 대한 도메인 지식도 개발하여 사업관리용 전문가 시스템 구축 시에 활용하고자 하는 것이다. 이를 위해서 국방정보체계의 소프트웨어 개발 사업관리에 영향을 미치는 요소들을 식별하고 이를 이용하여 국방정보체계 소프트웨어 개발 사업관리를 위한 전문가 시스템을 구축할 수 있도록 생명주기 모델 선정을 위한 도메인 지식, 생명주기 각 단계별 세부활동을 위한 도메인 지식, 시험평가 방안선정을 위한 도메인 지식을 개발하여 제시하였다. 본 논문에서는 이러한 도메인 지식을 전문가 시스템 개발도구에서 지원되는 각종 에디터에 사용되는 형태나 IF A, THEN B 형태로 개발하지 않고 사업관리용 전문가 시스템의 지식베이스에 포함될 지식들을 식별하는 것을 중심으로 개발하였다. 즉, 본 논문에서는 국방정보체계 사업관리용 전문가 시스템 개발의 필요성과 가능성을 검증하는 용역연구과제로써 프로토타입 혹을 완벽한 사업관리용 전문가 시스템을 개발한 것이 아니며, 전문가 시스템 개발 시 가장 어렵고 중요한 지식베이스 모듈속에 포함될 도메인 지식을 개발하는 것이 이 연구의 목적이다. 이러한 연구는 궁극적으로는 이러한 도메인 지식이 국방정보체계의 사업관리를 위한 전문가 시스템의 지식베이스 모듈 구축 시 기초/기반 및 핵심 지식으로 활용될 수 있을 것이다.

• Progress in Medical Physics
• /
• v.23 no.4
• /
• pp.285-291
• /
• 2012

In the present study, we measured the pure beta particle energy spectra of $^{147}Pm$, $^{85}Kr$, $^{90}Sr+^{90}Y$ radionuclide sources. We confirmed the residual maximum energies of KRISS sources meet the requirement of ISO 6980 and calculated mass collision stopping power ratio, which is essential for absolute measurement of absorbed dose from the reference ${\beta}$-rays. The residual maximum energies of KRISS $^{147}Pm$, $^{85}Kr$, $^{90}Sr+^{90}Y$ sources are 0.14, 0.57 and 0.93 MeV, respectively and the mass collision stopping power ratios are 1.123, 1.120 and 1.109, respectively.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.29 no.12C
• /
• pp.1669-1676
• /
• 2004

In H.264, 7 modes {16${\times}$16, 16${\times}$8, 8${\times}$16, 8${\times}$8, 8${\times}$4, 4${\times}$8, 4${\times}$4) are used to enhance the coding efficiency. The motion vector estimation with 7 modes may require huge computing time. In this paper, to speed up the motion vector estimation procedure while the high image quality remains, we propose a motion vector refinement scheme using the temporary motion vector generated with little computation. The proposed estimation process consists of three phases: Mode decision for a 16${\times}$16 macroblock, Composing a temporary motion vector, Refinement of the temporary motion vector. We demonstrate the effectiveness of the proposed method by computer simulation. In the results, the encoding time consumed by the proposed scheme has been reduced significantly while the encoded video quality remains unchanged.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.15 no.10
• /
• pp.6354-6365
• /
• 2014

This study aims to suggest a direction to develop Korea's certification system by comparing the evaluation items between Korea's G-SEED (Green Standard for Energy & Environmental Design) and Germany's sustainable building certification. A number of eco-friendly building certification systems are being implemented globally. On the other hand, mutually comparable evaluation items have not been suggested up until now. Therefore, international standards have been trying to establish evaluation criteria for eco-friendly buildings, and Germany's sustainable building certification is the first certification standard that has accepted those evaluation criteria. According to the result of comparing Korea's green building certification with Germany's sustainable certification, the green building certification has evaluation items not only on environmentality (62.6%), but also on social aspects (25.4%) and economic aspects (3.0%). This suggests a crucial direction to the development of evaluation items regarding the social and economic aspects of green building certification.

• Journal of the Korea institute for structural maintenance and inspection
• /
• v.14 no.3
• /
• pp.118-122
• /
• 2010

The study presents a standard time-temperature curve to evaluate the fire performance of subway tunnel structures. The central subway section is 135km long in Korea, the fourth longest in the world. The number of subway tunnels has been increasing rapidly and fire risk is proportional to the tunnel length. However, an adequate time-temperature curve for subway tunnel fires does not exist. Therefore, we studied a proposed foreign fire design model for which the heat rate is based on the traffic, and we present an appropriate time-temperature curve for Korean subway tunnels. The ISO 834 curve was used as a fire design model and the temperature distribution in the tunnel was estimated using numerical analysis. This led to a proposal for effective measures against subway tunnel fires.

• Journal of Environmental Science International
• /
• v.28 no.11
• /
• pp.1041-1045
• /
• 2019

In this study, the KS A ISO Guide 35 was applied to develop analytical standards for heavy metal cadmium using the Korean mussel (Mytilus coruscus) and to evaluate the homogeneity and stability of the sample. Some of the crucial characteristics that reference materials must consist include homogeneity and stability of both intra- and inter-bottles. We tested homogeneity using ANOVA analysis and short-term stability using regression analysis. The variations of cadmium concentrations did not significantly differ between intra- and inter-bottles (F=0.41, p=0.90). For short-term stability verification, cadmium analysis results were not statistically significant as a result of the regression analysis (significance F=0.51, p=0.53). This suggests that we can not dismiss the null hypothesis that there is no significant variation in concentrations of cadmium over time. These results indicated that the cryogenic-milling process has statistically proven the short-term stability for materials from mussels in the chemical analysis of cadmium. Therefore, we propose that the Korean mussel's reference material developed for the proficiency test could be used as a tool to evaluate reliability and consistency in laboratories.