• Journal of the Korean Association of Geographic Information Studies
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• v.17 no.1
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• pp.13-23
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• 2014

The Korea had been known as a safe region in volcanic disaster. However, precursor phenomena for volcanic eruption in mountain Baekdu have been frequently reported in these days. Therefore, the number of volcano experts, who warn the volcanic eruption in the Korean peninsula, has been increased. This paper describes the plan for developing volcanic disaster response system for mountain Baekdu. First, disaster prevention business system of National Emergency Management Agency(NEMA) and related IT-based systems are analyzed. Second, business processes for volcanic disaster response are derived based on the business system. Third, The system architectures are designed referred to related disaster response system, and required spatial information is investigated. Finally, we implement the pilot system to test the suggested volcanic disaster response system. Applying suggested volcanic disaster response system to NEMA, additional test and system supplementation should be carried out. We expect that the complete volcanic disaster response system, which will be implemented based on this research, will minimize the volcanic disaster damage in the area of Korea, China, and Japan.

• Information Systems Review
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• v.17 no.1
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• pp.19-47
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• 2015

The purpose of this research is to represent how ICT relatedness and organization environment influence on interactions between healthcare specialist and patients, and how knowledge sharing influence on healthcare innovation, and how service innovation influence on service performance through structured research model. This research also has applied to resource based view, adaptive structuration theory, service innovation, ICT relatedness to find out performance effect on healthcare service innovation and service performance. In other words, organization structure environment and ICT relatedness are important factors to promote interaction between healthcare service providers and customers like patients each other, moreover, to share the tacit knowledge by creating in the interaction. Moreover in order to verify model fitness, this research has surveyed among healthcare specialists, technicians and other staffs. Model verification result, all hypotheses have been found to give a positive effect on the creation and significantly. Structured organizational environment and ICT association is to promote the organization's functions by influencing the behavior of the service organization and patient interaction and knowledge sharing, and suggests that the major factors influencing the innovation performance of hospitals and health care services.

• Journal of Convergence for Information Technology
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• v.10 no.1
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• pp.195-202
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• 2020

This study is to investigate the effect of lower extremity strength exercise using biofeedback system on community-based elderly. Ten community-based elderly were exercised using the biofeedback system (with functional electrical stimulation) three times a week for six weeks. Data analysis was performed using Wilcoxon signed rank test. Physical function improved significantly, but there was no significant difference in muscle strength and muscle mass. Although elderly people were able to confirm that community-based ICT home biofeedback training could be possible and could lead to improvements in the lower extremity function, further research is needed to demonstrate a clearer effect by expanding the target population, distinguishing the sexes, and providing a personalized training method.

• Journal of Platform Technology
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• v.11 no.4
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• pp.50-61
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• 2023

The advancement of various big data technologies has had a tremendous impact on many industries. Diverse big data research studies have been conducted to process and analyze massive data quickly. Under these circumstances, new emerging technologies such as high-capacity persistent memory (PMEM) and Compute Express Link (CXL) have lately attracted significant attention. However, little investigation into a big data "search" platform has been made. Moreover, most big data software platforms have been still optimized for traditional DRAM-based computing systems. This paper first evaluates the basic performance of Intel Optane PMEM, and then investigates both indexing and searching performance of Elasticsearch, a widely-known enterprise big data search platform, on the PMEM-based computing system to explore its effectiveness and possibility. Extensive and comprehensive experiments shows that the proposed Optane PMEM-based Elasticsearch achieves indexing and searching performance improvement by an average of 1.45 times and 3.2 times respectively compared to DRAM-based system. Consequently, this paper demonstrates the high I/O, high-capacity, and nonvolatile PMEM-based computing systems are very promising for big data search platforms.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.30 no.6
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• pp.326-336
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• 2018

Continuous measurement of nearshore waves around Korea over long period is very demanding to setup plans for prevention of disasters of port and coastal structures. In this respect, a new web-based system, termed as WINK, was established, which collects nearshore wave data from Korea Meteorological Agency (KMA), Korea Hydrographic and Oceanographic Agency (KHOA), and Ministry of Oceans and Fisheries (MOF) and provide them after quality control of the data. This paper describes technical aspects regarding collection and selection of the wave observation data, construction of wave hindcasting data, the methodology of quality control for the selected wave data, and overall process of building the web-based data providing system.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.5
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• pp.379-386
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• 2021

This study was undertaken to develop a cascade-type continuous culture system (CCCS) that combines both ICT and biotechnology (BT), for the mass production of microalgae. This system is capable of maintaining the essential culture conditions of pH, temperature, carbon dioxide, and illuminance control, which are key parameters for the growth of microalgae, and is economical for producing microalgae regardless of the season or location. It has the added advantage of providing stable and high productivity. In the current study, this system was applied to culture microalgae for 71 days, with subsequent analysis of the experimental data. The initial O.D. of the culture measured from incubator 1 was 0.006. On the 71st day of culture, the O.D.s obtained were 0.399 (incubator 1), 0.961 (incubator 2), 0.795 (incubator 3), and 0.438 (incubator 4), thereby confirming the establishment of continuous culture. Thus, we present a smart-farm based on ISMC (in-situ monitoring and control) for a mass culture method. We believe that this developed technology is suitable for commercialization, and has the potential to be applied to hydroponics-based cultivation of microalgae and cultivation of high-value-added medicinal plants as well as other plants used in functional foods, cosmetics, and medical materials.

• Journal of the Korea Convergence Society
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• v.10 no.1
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• pp.53-59
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• 2019

In this paper, we introduce the UTOPIA Smart City Security Management System which manages a user authentication for smart cities. Because the smart city management system should take care of huge number of users and services, and various kinds of resources and facilities, and they should be carefully controlled, we need a specially designed security management system. UTOPIA is a smart city system based on ICT(Information and Communication Technology), and it has a three tier structure of UTOPIA portal system, UTOPIA processing system and UTOPIA infrastructure system. The UTOPIA processing system uses the smart city middleware named SmartUM. The UTOPIA Smart City Security Management System is implemented in the application security layer, which is the top layer of the SmartUM middleware, and the infrastructure security layer, which is the lowest layer. The UTOPIA Smart City security management system is built on the premise that it supports all existing user authentication technologies. This paper introduces the application security layer and describes the authentication management in the application security layer.

• Journal of Aerospace System Engineering
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• v.17 no.4
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• pp.133-143
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• 2023

As drones (also known as UAV) become popular with advanced information and communication technology (ICT), they have been utilized for various fields (agriculture, architecture, and so on). However, malicious attackers with advanced drones may pose a threat to critical national infrastructures. Thus, anti-drone systems have been developed to respond to drone threats. In particular, remote identification data (R-ID)-based UAV detection and identification systems that detect and identify illegal drones with R-ID broadcasted by drones have been developed, and are widely employed worldwide. However, this R-ID-based UAV detection/identification system is vulnerable to security due to wireless broadcast characteristics. In this paper, we analyze the security vulnerabilities of DJI Aeroscope, a representative example of the R-ID-based UAV detection and identification system, and propose a replay-attack-based neutralization method using the analyzed vulnerabilities. To validate the proposed method, it is implemented as a software program, and verified against four types of attacks in real test environments. The results demonstrate that the proposed neutralization method is an effective neutralization method for R-ID-based UAV detection and identification systems.

• Proceedings of the Korean Society of Computer Information Conference
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• 2020.07a
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• pp.401-403
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• 2020

본 논문에서는 박물관에서 사용되는 전시 매체 중 지형 및 건축 문화유산 모형을 활용한 Visual SLAM 기반 증강현실 시스템 활용을 제안한다. 현재 박물관에서 다양한 디지털 전시가 도입되고 관람객과의 상호작용을 중요시하고 있으나 오래전부터 도입된 지형 및 건축 문화유산 모형의 ICT 기술 활용은 미흡한 상황이다. 이에 본 연구에서 제안한 Visual SLAM 기반 증강현실 시스템은 현실 객체의 특징점을 인식하여 3D 객체를 증강하기 때문에 다양한 크기와 형태의 문화유산 모형에 활용될 수 있다. 이러한 시스템 제작을 제안함으로 박물관에 전시되어있는 기존 모형의 활용도 및 전시 효과를 높일 수 있고 다양한 인터랙션 설정으로 추가 정보 또한 제공할 수 있다.

• Journal of Platform Technology
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• v.10 no.4
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• pp.25-38
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• 2022

Recently, it is reported that the Korean Unmanned Aerial Vehicle (UAV) interface protocol (K-4586) based on STANAG-4586 is being developed to secure interoperability between UAVs. The core elements of the K-4586-based Unmanned Aircraft System (UAS) are the Core UAV Control System (CUCS), Vehicle Specific Module (VSM), Data Link Interface (DLI), and C4I systems. In UAS based on K-4586, the DLI function for transmitting and receiving messages to link UAVs is included in VSM and CUCS respectively. The Generator/Analyzer (G/A) tool is an apparatus that is developed for protocol conformance verification for VSM and CUCS, and G/A tools with DLI message transmitting and receiving should be developed separately. Core applications (VSM, CUCS, DLI) and G/A tools based on K-4586 may be developed independently depending on the developers. If the DLI message modules are different for each developer, the scope and results of protocol conformance verification will be dissimilar, and some problems may happen during system integration. In this study, common DLI message module based on the API was designed to provide the DLI message transmitting and receiving function necessary to the development of core applications and the protocol conformance verification tool of based on K-4586. When applying the proposed common DLI message module, it can be expected to shorten the UAS system development period and reduce costs, and ensure conformance of protocol. In this paper, the design and implementation method for the common DLI message module based on API was proposed and the results of functional test was described.