• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.12 no.6
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• pp.609-615
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• 2000

The energy conservation is one of the most important issues in recent years. Especially, the energy conservation through improved control strategies is one of the most highly possible area to be implemented in the near future. The energy conservation of the ice storage system can be accomplished through the improved control strategies. A real time building load prediction algorithm was developed. The expected highest and the lowest outdoor temperature of the next day were used to estimate the next day outdoor temperature profile. The measured dry bulb temperature and the measured building load were used to estimate system parameters by using the on-line weighted recursive least square method. The estimated hourly outdoor temperatures and the estimated hourly system parameters were used to predict the next day hourly building loads. In order to see the effectiveness of the building load prediction algorithm, two different types of building models were selected and analysed. The simulation results show less than 1% in error for the prediction of the next day building loads. Therefore, this algorithm may successfully be used for the development of improved control algorithms of the ice storage system.

• Proceedings of the KIEE Conference
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• 2003.07c
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• pp.1674-1676
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• 2003

The factors affecting the accuracy of lightning current measuring system are figured out the materials and length of down-conductor, and impedance matching between grounding resistance and characteristic impedance of cable. The cable with the low characteristic impedance used to transfer the lightning current from the top of the tower is too long to measure the waveform of lightning current, exactly. Especially, the height of the tower can cause the change of front time and magnitude of lightning stroke current. Basically, in this experiment. It was found that the magnitude and rise time of the lightning current are extremely dependant in the length of down-conductor in lightning current measuring system.

• Journal of the Korea Institute of Military Science and Technology
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• v.19 no.1
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• pp.84-94
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• 2016

The warfighting experimentation is the most important for the weapon acquisition process because the warfighting experimentation shall support the operation effectiveness as well as acquisition logicality. Therefore, ROK Navy is starting to set up the next generation warfighting experimentation systems. According to literature studies, there have been many studies regarding the interoperability of Simulators(Virtual) and Exercising models(Constructive), but not for studies regarding interoperability between Simulators(Virtual) and Analysis models(Constructive) that is the core component of next generation maritime warfighting experimentation systems. This study is dealing with the V-C(Analysis model) interoperability test and methodology of interoperation analysis. The purpose of the study is to provide the new analysis methodology through V-C(Analysis model) interoperation, which can be applied for the concept of operations(CONOPS) of next generation maritime warfighting experimentation systems. In addition to that, the study validates the suggested analysis methodology by the case study of a naval operation.

• Proceedings of the Korea Information Processing Society Conference
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• 2014.04a
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• pp.368-371
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• 2014

최근 디지털계측제어시스템은 사이버위협에 매우 취약하여 사이버공격에 의해 발전소 안전에 부정적인 영향을 받을 수 있는 실정이다. 따라서 디지털계측제어시스템에 대해 주기적인 사이버보안 위험 평가가 필요하다. 이에 따라 본 논문에서는 테스트베드 구축을 통해 특정 시점에서의 사이버 위협의 침해 가능성 분석, 또는 자체적으로 사이버보안성을 평가할 수 있는 방법에 대해 제안한다. 동 연구에서 제안하는 사이버보안 위험 평가는 자산분석, 테스트베드 구축, 취약점 분석, 위협평가, 위험도분석 및 평가 총 5단계로 구성되며 각 단계의 사이버보안 활동 수행을 통해 디지털계측제어계통의 사이버보안수준이 향상될 것으로 사료된다.

• Proceedings of the KIEE Conference
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• summer
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• pp.85-87
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• 2004

Supervisory control and data acquisition (SCADA) systems are essential parts of power system which employ a wide range of computers and communication technologies. The traditional SCADA system is mainly for information exchange in only one company, and the information is provided only to the operator or administrator. But in the deregulated environment, we need much more information, which can be exchanged among different companies. With the rapid development of internet, we can use it to access information easily. This paper proposes web technologies to be applied in power system in order to display some important information through accessing data from database, and to realize the real time control of the substation. The functions of SCADA system will be implemented by a set of Web-based components. The monitoring and control of standard 154[kV] substation model is already realized in the laboratory test. The Web-based SCADA system is able to provide sufficient information and control for pow or system through an efficient and economical way.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.12 no.11
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• pp.1947-1953
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• 2008

This paper studies a system design of testifying next generation convergence network. Next generation convergence network includes such elements as not only various gateway systems interworking with conventional PSTN(Public Switched Telephone Network) but also various protocols communicating between gateway systems and softswitches or gateway controllers. Discussed are an effective system solution to verify functionalities and performance of protocols professing. From such discussion, the study identifies functional blocks and operational flows required for establishing a test system, and then with a basis of these proposes a system architecture. Finally this paper presents system design results and its implemented functional details.

• Proceedings of the Korea Information Processing Society Conference
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• 2012.11a
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• pp.1504-1506
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• 2012

소프트웨어 개발 생태계의 변화에 따른 소프트웨어 개발의 다양화 및 Time-to-Market으로 인해 사용자들이 요구하는 소프트웨어 품질수준이 높아졌다. 그러나, 소프트웨어 품질을 향상하는 여러 가지가 방법의 하나로 완벽한 테스트를 통해 가능하다. 하지만, 완벽한 테스트를 수행하는 것은 불가능하다. 이를 해결하기 위해 정형화된 올바른 테스트 프로세스를 적용하여 품질을 높이고자 한다. 본 논문에서는 조직의 테스트 성숙도 수준을 평가할 수 있는 TMMi와 테스트 프로세스를 개선할 수 있는 TPI next의 매핑을 기반으로 조직의 테스트 성숙도 측정과 함께 테스트 프로세스 수준 향상을 위한 가이드를 제공하고자 한다. 이를 위한 절차로 TMMi(level2)와 TPI next의 매핑, 비/공통 요소 추출을 통해 조직의 테스트 프로세스 개선을 위한 가이드를 제공하고자 한다.

• The Korean Journal of Archival Studies
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• no.54
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• pp.151-178
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• 2017

The purpose of this study is to identify the problems of electronic records management in the records management field and to develop a new electronic records management system that can cope with the rapidly changing records production and management environment, which is rapidly changing because of the introduction of new IT. It is time to design the next-generation records management system in all areas of process, system, and infrastructure to meet the new government record management innovation. In this point of view, the right value and direction of the next-generation records management system are determined, and the problems of the process, system, and infrastructure are identified and settled.

• Journal of the Korea Convergence Society
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• v.8 no.12
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• pp.31-38
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• 2017

This study was carried out to investigate the possibility of isolating the useful gene of soybean plant, anthocyanin, through NGS (Next Generation Sequencing) and molecular biology experiments. Lespedeza cuneata. G. don is a resource plant but has many useful materials. Especially, D-pinitol, which has anti-diabetic function, is contained in a large amount. However, the gene related to the biosynthesis of D-piniol has not been isolated in the non-spermatid. Lespedeza cuneata. G. don was treated with abiotic stress (drought), total RNA was extracted, and a library was constructed to perform NGS. In this way, the genes involved in D-pinitol biosynthesis were isolated and sequenced in silico. In order to support this, ononitol epimerase involved in D-pinitol amplification was identified using the Blast program and RT-PCR confirmed the increased gene expression in vitro, and the gene was isolated and identified by convergence study.

• Journal of Advanced Navigation Technology
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• v.15 no.6
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• pp.1059-1067
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• 2011

Next-Generation ITS environment requires high-speed data packet transmission, security, authentication, and hand-over supportable for driving vehicle on road by installing RSEs and OBUs. Therefore, wireless communication technology for next-generation ITS services are advancing to 200km/h maximum speed supportable, 1km communication radius, minimum 10Mbps hish-speed datarate for multimedia data(such as text, images, movie clips and so on) supportable, high reliability. In this paper, we implemented WAVE communication system which based on IEEE 802.11p PHY/MAC and evaluated that the system meets next-generation ITS environments.