• Journal of the Institute of Electronics Engineers of Korea SC
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• v.48 no.4
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• pp.71-79
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• 2011

This paper proposes a reliability enhancement of industrial real-time Ethernet using master redundancy method for NPPs(Nuclear Power Plants). In this paper, Ethernet Powerlink is investigated for distributed control systems for NPPs considering real-time and reliability performance. The proposed method can reduce a master switch-over time using PReq signal when Ethernet Powerlink master(Managing Node) failure was occurred. Using the OPNET simulation results, the performance enhancement of master switch-over time of Ethernet Powerlink is verified for NPPs.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.37 no.12
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• pp.1521-1527
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• 2013

This study proposes a wearable master device that can measure the joint stiffness and the angular displacement of a human operator to enhance the adapting capability of a slave system. A lightweight inertial sensor and the exoskeleton mechanism of the master device can make an operator feel comfortable, and artificial pneumatic muscles having a working principle similar to that of human muscles improve the performance of the slave device on emulating what a human operator does. Experimental results revealed that the proposed master/slave system based on the muscle stiffness sensor yielded uniform tracking performance compared with a conventional position-feedback controller when the payload applied to the slave system changed.

• Journal of the Korean Society for Library and Information Science
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• v.35 no.2
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• pp.207-225
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• 2001

As Web based knowledge and technology is needed for librarians in the digital environments, it should be educated through the Department of Library and Information(DLI) courses. For importing the courses in DLI, we go through several preliminary stages. First, the role and duties of web masters in digital libraries are figured out. Second, it is known that the tendency of MLS courses in American universities is toward to adopt the web related subjects, but still not in Korea. Third, the survey finds out the recognition of web masters in Korean university libraries about the functions and abilities web masters. As the results, we suggest several subjects for the web master's training. They are HTML, XML, Window NT and Web Server Management, Javascript and Java, Networks, Mutimedia Programs, Programming, and LINUX.

• Journal of the Korea Society of Computer and Information
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• v.3 no.2
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• pp.177-182
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• 1998

This paper proposes pure master key which can be commonly used in multi-cryptographic system. It also refer to master key condition for RSA public key cryptosystem using Format's theorem and master key algorithm as well.

• Proceedings of the KAIS Fall Conference
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• 2010.05b
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• pp.599-602
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• 2010

음악 제작 과정의 마지막 단계는 마스터링이다. 과거의 마스터링은 단순히 컴프레서(Compressor)와 리미터(Limiter)를 이용하여 각 트랙의 오디오 레벨을 일률적으로 매칭시키는 것이었지만, 디지털 장비의 꾸준한 발전으로 많은 마스터링 제작자들은 이퀄라이저(Equalizer)와 컴프레서를 기본으로 리버브(Reverb), 딜레이(Delay), 그리고 디더(Dither)를 이용하여 모든 트랙을 하나의 통일된 분위기로 제작하는 방식으로 진보하고 있다.

• KIPS Transactions on Software and Data Engineering
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• v.3 no.11
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• pp.471-478
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• 2014

Database replication is utilized to increase credibility, availability and prevent overload of distributed databases. Two models currently exist for replication - Master/Slave and Multi-Master. Since the Multi-Master model has problems of increasing complexity and costs to interface among multiple databases for updates and inserts, the Master/Slave model is more appropriate when frequent data inserts and updates are required. However, Master/Slave model also has a problem of not having exact criteria when systems choose to connect between Master and Slave for transactions. Therefore, this research suggests a routing algorithm based on AOP (Aspect Oriented Programming) in the Master/Slave database model. The algorithm classifies applications as cross-cutting concerns based on AOP, modularizes each concern, and routes transactions among Master and Slave databases. This paper evaluates stability and performance of the suggested algorithm through integration tests based on scenarios.

• Journal of KIISE:Information Networking
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• v.30 no.1
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• pp.38-47
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• 2003

Communication between Bluetooth devices is based on TDD by a master unit. In this discipline, the transmission of slave packets can be made only when the master transmits a packet to the slave. Thus, some slots may be wasted when there is no user data in the master's or slave's queue due to the transmission of a POLL or NULL packet. Therefore a scheduling scheme which can minimize the slot waste is required in Bluetooth intra-piconet communication. However, since the master is responsible for the intra-piconet scheduling, it must be provided with an information on each slave's queue length to apply traditional scheduling schemes. which is impossible in Bluetooth. This paper presents a new Bluetooth intra-piconet scheduling scheme that is efficient and does not require the information on each slave's queue length. The scheduling is done based on the information about the existence of data in the master and slave queues which is derived by the master identifying the type of packets transmitted. The master schedules to communicate with the slaves according to the priorities determined based on this information. We Presents simulation results which indicate a significant improvement in the performance when our proposed scheme is used.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.9
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• pp.6376-6384
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• 2015

In practice of urban redevelopment promotion projects, since the decision-making is dependent on the verbal agreements between the participants, planning changes are frequently occur. A master plan can be utilized as an effective feedback and adjusting means for decisions. It is a difficult to establish a master plan quickly and effectively to consider the large number of information. Effective decision support system that can storage and retrieval information items systematically and efficiently necessary when planning master plan is required. In this study, a data-warehouse prototype that supports the master planning at early stage was suggested. A metadata index database was developed by identifying information items of base survey results and master plan cases. Also user interface for information searching was presented. The applicability of the prototype was evaluated by case application. It was found that the prototype allows effective searching of desired information through meta data.

• 한국상하수도협회지
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• s.27
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• pp.8-9
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• 2009

정부는 6월 8일 4대강 살리기 프로젝트의 마스터플랜을 최종 확정했다. 마스터플랜은 4대강 인근 12개 시 도를 대상으로 지역설명회, 관계부처 학회 등의 추천을 받은 전문가 그룹의 자문, 물환경학회 수자원학회 등 간련학회의 토론, 전문가와 시만이 참여한 공청회를 통해 각계의 다양한 의견을 수렴하여 최종 확정하게 되었다.

• 프린팅코리아
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• v.12 no.2
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• pp.41-41
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• 2013

하이델베르그가 드루파2012에서 소개한 스피드마스터 XL 106이 지난 한 해 동안 성공적인 판매기록을 보였다. 스피드마스터 XL 106은 양면인쇄에서 시간당 1만8000매를 인쇄할 수 있는 기기로, 연간 4천만 매 이상을 생산하는 대형 상업인쇄사에 유용한 인쇄기다. 스피드미스터 XL 106-P+L은 시간당 1만8000매의 속도로 한 번에 양면인쇄 후 코팅을 하는 인쇄기로, 올해 중반부터 판매될 예정이다.