• Journal of the Korea Institute of Information and Communication Engineering
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• v.25 no.12
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• pp.1809-1816
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• 2021

In order to identify the latest research trends using data related to national R&D projects and to produce and utilize meaningful information, the application of automatic classification technology was also required in the national R&D information service, so we conducted research to automatically classify and recommend research field. About 450,000 cases of national R&D project data from 2013 to 2020 were collected and used for learning and evaluation. A model was selected after data pre-processing, analysis, and performance analysis for valid data among collected data. The performance of Word2vec, GloVe, and fastText was compared for the purpose of deriving the optimal model combination. As a result of the experiment, the accuracy of only the subcategories used as essential items of task information is 90.11%. This model is expected to be applicable to the automatic classification study of other classification systems with a hierarchical structure similar to that of the national science and technology standard classification research field.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2022.06a
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• pp.44-45
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• 2022

The International Association of Marine Aids to Navigation and Lighthouse Authorities (IALA) has been developing the S-201 Aids to Navigation information standard since 2019 for the purpose of exchanging Aids to Navigation data. In this study, the navigation information managed in Korea was modeled using the IALA S-201 navigation information standard system for the management and service of smart navigation. By using the S-201 Aids to Navigation information standard system, the basis for reflecting the information standard system was prepared in the production, exchange, and collection of domestic navigational data. It also intends to contribute to the establishment of an information exchange system between the Aids to Navigation organization, IALA, and countries.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.39C no.6
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• pp.466-475
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• 2014

The IVEF service is the draft standard designed for exchange of information on sea traffic between the vessel traffic systems and between the vessels. Standardization of this service is under way as a part of the next-generation navigation system, called e-Navigation. The International Association of Lighthouse Authorities (IALA) suggests, on its recommendation V-145, the IVEF service model and the protocol for provisioning of this service. But the detailed configuration of this service must be designed by the users. This study suggests, based on the basic service model and protocol provided in the recommendation V-145, the implementation of the J-VTS middleware which will facilitate exchange of information on sea traffic. The J-VTS middleware consists of various components for providing the IVEF service and for processing the IVEF message protocols. The vessel traffic systems and the vessels corresponding to upper-layer applications may use the IVEF service with the functions provided by the J-VTS middleware, and the services are designed to be accessed according to the security level of users.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2014.10a
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• pp.42-43
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• 2014

As MSI(Maritime Safety Information), navigational, meteorological warnings and forecasts, was included as one of service in the MSP(Maritime Service Portfolio), which is lists of shore based service in the e-Navigation driven by IMO for safety navigation and marine protection, and was tested in the european test bed project on e-Navigation, it's considered as one of important e-Navigation service. This paper developed a prototype of MSI service to prepare e-navigation era, which is very important in a navigation environment. Current status on MSI and NAVTEX was surveyed, and several points on limitations and improvements in the NAVTEX operations were summarized. Basic study on the MSI service prototype was developed based on S-100, which is recognized as baseline to develop CMDS(Common Maritime Data Structure) of e-Navigation.

• Journal of the Korean Association of Geographic Information Studies
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• v.21 no.4
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• pp.1-13
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• 2018

Both Platform as a Service (PaaS) as one of the cloud computing service models and the e-government (e-Gov) standard framework from the Ministry of the Interior and Safety (MOIS) provide developers with practical computing environments to build their applications in every web-based services. Web application developers in the geo-spatial information field can utilize and deploy many middleware software or common functions provided by either the cloud-based service or the e-Gov standard framework. However, there are few studies for their applicability and performance in the field of actual geo-spatial information application yet. Therefore, the motivation of this study was to investigate the relevance of these technologies or platform. The applicability of these computing environments and the performance evaluation were performed after a test application deployment of the spatial image processing case service using Web Processing Service (WPS) 2.0 on the e-Gov standard framework. This system was a test service supported by a cloud environment of Cloud Foundry, one of open source PaaS cloud platforms. Using these components, the performance of the test system in two cases of 300 and 500 threads was assessed through a comparison test with two kinds of service: a service case for only the PaaS and that on the e-Gov on the PaaS. The performance measurements were based on the recording of response time with respect to users' requests during 3,600 seconds. According to the experimental results, all the test cases of the e-Gov on PaaS considered showed a greater performance. It is expected that the e-Gov standard framework on the PaaS cloud would be important factors to build the web-based spatial information service, especially in public sectors.

• Journal of Intelligence and Information Systems
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• v.23 no.1
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• pp.109-126
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• 2017

In the various kinds of intelligent services, many studies for detecting emotion are in progress. Particularly, studies on emotion recognition at the particular time have been conducted in order to provide personalized experiences to the audience in the field of exhibition though facial expressions change as time passes. So, the aim of this paper is to build a model to predict the audience's emotion from the changes of facial expressions while watching an exhibit. The proposed model is based on both sequential neural network and the Valence-Arousal model. To validate the usefulness of the proposed model, we performed an experiment to compare the proposed model with the standard neural-network-based model to compare their performance. The results confirmed that the proposed model considering time sequence had better prediction accuracy.

• KEPCO Journal on Electric Power and Energy
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• v.6 no.2
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• pp.129-135
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• 2020

The standardization of e-IoT (energy Internet of Things) communication and service, which is the energy field of energy, is to define the standard model and to demonstrate the practical model in order to take the lead and occupy the market where new market is created with the latest technology. In particular, detailed technical specifications are defined for developing a framework for IoT technology, the foundation technology of the 4th Industrial Revolution, securing interoperability through standardization, and operating a standard platform. In this paper, we propose a method for e-IoT standard protocol lightening and test certification procedure. The proposed method provides a product implementation method that can solve the problem of low power issue of e-IoT product in the future.

• 한국IT서비스학회:학술대회논문집
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• 2008.05a
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• pp.541-545
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• 2008

SOA는 하나의 시스템이 아니며 다양한 서비스를 제공하기 위한 다양한 시스템이 SOA개념 하에 서로 유기적으로 연계되어 있다. 이러한 SOA를 실현하는 미들웨어이며, 분산된 서비스 컴포넌트의 효율적인 통합을 실현하는 ESB는 BPEL 혹은 솔루션 벤더의 자체적인 표준을 따르는 프로세스 매니저와 연동해 프로세스 기반의 통합을 지원한다. 기업 차원에서 볼 때, 안정적인 SOA를 기반으로 BPM을 구축하면 BPM이 보다 민첩하고 유연해지며, 여러 부서와 위치에 걸쳐 BPM을 보다 쉽게 확장할 수 있고, 기본 IT 시스템의 변화에 보다 탄력적으로 대응할 수 있다. 또한, 프로세스에 필요한 일부 서비스를 거래 파트너에 아웃소싱할 수 있고, 회사의 고유한 프로세스를 내외부의 신규 고객에게 서비스로 제공할 수 있는 새로운 비즈니스 모델을 만들 수 있다. 이런 비즈니스 프로세스를 운영하면서 서비스에 대한 품질과 각 프로세스에 대한 관리를 효율적으로 하기 위하여 본 논문에서는 EERP (End to End Resource Planning)을 적용하여 QoS를 보장하고자 한다. EERP는 SO(Service Oriented)-SCM이나 SO-CRM과 같은 엔터프라이즈 환경에서의 내부, 외부의 리소스들을 최적화 하며, 프로세싱에 사용되는 각 리소스들을 실시간으로 감시하며 QoS를 보장하는 매커니즘을 통하여 최적화한다. 이를 기반으로 본 논문에서는 이러한 EERP QoS 구조를 제시한다.

• Optical Science and Technology
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• v.6 no.2
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• pp.7-18
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• 2002

현재, 가입자들은 다양한 매체 접속의 호환성과 통신 시장의 변화에 있어서 가장 적절한 기술과 제반사항을 지원하며, 또한 현 통신 시장의 흐름을 적소에서 요구되어지는 새로운 시스템 설치 및 새로운 망을 구성시 비용절감 효과를 누릴 수 있는 새로운 기술을 요하고 있다. 새로운 변화에 부응하여 IEEE 802.3 에서는 현 통신 시장에서 앞으로 나아갈 제 4세대라고 불리울 수 있는 NGN(Next Generation Networks) 시장에 새로운 향방을 제시하고 있으며, xDSL 표준안 과 이미 상호 호환하는 이더넷 기반의 제품들을 선보이고 있다. 회선기반의 네트워크에서 패킷기반으로서의 전환이 전화서비스를 포함하여 새로운 사업모델을 포함하는 데이터 서비스와 기타 부가서비스 분야에서 매우 빠르게 이루어지고 있는 가운데, 기존의 회선 기반 네트워크와 새로운 패킷기반의 네크워크의 상호 보완적 진화차원의 액세스 전송기술에 대한 필요성이 높아지고 있다. 본 고에서는 차세대 전송기술이라고 불리고 있는 다양한 솔루션에 대해 기술적인 현안을 짚어 보고 향후 통합액세스기반의 광가입자망 전송기술 적용방안에 대해 살펴본다.

• Optical Science and Technology
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• v.6 no.2
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• pp.19-28
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• 2002

현재, 가입자들은 다양한 매체 접속의 호환성과 통신 시장의 변화에 있어서 가장 적절한 기술과 제반사항을 지원하며, 또한 현 통신 시장의 흐름의 적소에서 요구되어지는 새로운 시스템 설치 및 새로운 망을 구성시 비용절감 효과를 누릴수 있는 새로운 기술을 요구하고 있다. 새로운 변화에 부응하여 현 IEEE 802.3에서는 현 통신 시장에서 앞으로 나아갈 제 4세대라고 불리울 수 있는 NGN(Next Generation Networks)시장의 새로운 향방을 제시하고 있으며, xDSL 표준안과 이미 상호 호환하는 이더넷 기반의 제품들을 선보이고 있다. 회선기반의 네트워크에서 패킷기반으로의 전환이 전화서비스를 포함하여 새로운 사업모델을 포함하는 데이터 서비스와 기타 부가서비스 분야에서 매우 빠르게 이루어지고 있는 가운데, 기존의 회선기반 네트워크와 새로운 패킷기반의 네트워크의 상호 보완적 진화차원의 액세스 전송기술에 대한 필요성이 높아지고 있다. 본 고에서는 차세대 전송기술이라고 불리고 있는 다양한 솔루션에 대해 기술적인 현안을 짚어보고 향후 통합액세스기반의 광가입자망 전송기술 적용방안에 대해 살펴본다.