• Journal of Computing Science and Engineering
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• v.7 no.4
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• pp.242-250
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• 2013

Many information systems that provide useful services to people are connected to the Internet for convenience and efficiency. However, improper accessibility might make the systems susceptible to a variety of attacks. Although existing security solutions such as an intrusion detection system, intrusion prevention system, and firewalls have been designed to protect against such attacks, it is impossible to block all kinds of attacks. Furthermore, most of the proposed solutions require information about attacks for efficient prevention. Research on intrusion-tolerant systems (ITSs) have been conducted in order to continue providing proper services in threatening environments. The purpose of an ITS is to survive against every intrusion, rather than to prevent them. In this paper, previous studies on ITS are introduced and classified according to the centric scheme as middleware-based ITS, hardware-based ITS, and recovery-based ITS. Recent research focusing on adaptive transformation schemes is also introduced.

• Journal of Korean Institute of Industrial Engineers
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• v.26 no.4
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• pp.345-353
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• 2000

ITS(Intelligent Transportation System) is an advanced system which can effectively handle the current transportation and tragic problems. In order to beneficially apply ITS to the current transportation infrastructure we need a telecommunication technology which guarantees high speed data transmission between the road side units and the on-board units in the vehicles. DSRC(Dedicated Short Range Communication) is considered as a promising technology since it has the capability of two-way communication and can serve to implement various ITS services. In this paper, we study an architecture of telecommunication network far ITS based on DSRC. We use the ISCNA(Information Systems and Communication Networks Architecture) framework for the method of approach. We first analyze the requirements for ITS services using DSRC in Korea, and then establish a logical architecture for the network. We also analyze the types of data and process between the network components. Based on these we propose an architecture for the telecommunication network for ITS. We also briefly discuss the simulation which we perform to validate the proposed network architecture.

• Journal of Korean Society of Archives and Records Management
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• v.13 no.2
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• pp.201-225
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• 2013

This study aims to investigate services of presidential archives in Korea for users who utilize holdings of the archives for scholarly purposes, as well as to examine users' perception of the services. For these purposes, the study analyzed the content of 13 U.S. presidential libraries' Web sites in terms of their research services. In addition, it examined the content of a Korean presidential archives' Web site regarding its research services. Telephone interviews of three staff members of the presidential archives were conducted to better understand the services. With this, three users who have written research papers by using presidential records were interviewed by telephone. It was found that federated search services, access by subjects, and related records of search results were considered necessary by users. A variety of digitized records should be provided online and the services needed should be changed from mere processing of FOIA requests to archival reference services to meet users' needs. Congruently, the presidential archives should provide specialized services to offer records relevant to users' research interests and to provide the compilation of selected records crucial for research.

• 한국균학회소식:학술대회논문집
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• 2016.05a
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• pp.25-25
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• 2016

Biological control has many advantages as a disease control method, particularly when compared with pesticides. One of the most important benefits is that biological control is an environmental friendly method and does not introduce pollutants into the environment. Another great advantage of this method is its selectivity. Selectivity is the important factor regarding the balance of agricultural ecosystems because a great damage to non target species can lead to the restriction of natural enemies' populations. The objective of this research was to evaluate the effects of several different bacterial isolates on the efficacy of biological control of soil borne diseases. White rot caused by Sclerotium cepivorum was reported to be severe disease of garlic and chive. The antifungal bacteria Burkholderia pyrrocinia CAB08106-4 was tested in field bioassays for its ability to suppress white rot disease. In field tests, B. pyrrocinia CAB08106-4 isolates suppressed white rot in garlic and chive, with the average control efficacies of 69.6% and 58.9%, respectively. In addition, when a culture filtrate of B. pyrrocinia CAB08106-4 was sprayed onto wounded garlic bulbs after inoculation with a Penicillium hirstum spore suspension in a cold storage room ($-2^{\circ}C$), blue mold disease on garlic bulbs was suppressed, with a control efficacy of 79.2%. These results suggested that B. pyrrocinia CAB08106-4 isolates could be used as effective biological control agents against both soil-borne and post-harvest diseases of Liliaceae. Chinese cabbage clubroot caused by Plasmodiophora brassicae was found to be highly virulent in Chinese cabbage, turnips, and cabbage. In this study, the endophytic bacterium Flavobacterium hercynium EPB-C313, which was isolated from Chinese cabbage tissues, was investigated for its antimicrobial activity by inactivating resting spores and its control effects on clubroot disease using bioassays. The bacterial cells, culture solutions, and culture filtrates of F. hercynium EPB-C313 inactivated the resting spores of P. brassicae, with the control efficacies of 90.4%, 36.8%, and 26.0%, respectively. Complex treatments greatly enhanced the control efficacy by 63.7% in a field of 50% diseased plants by incorporating pellets containing organic matter and F. hercynium EPB-C313 in soil, drenching seedlings with a culture solution of F. hercynium EPB-C313, and drenching soil for 10 days after planting. Soft rot caused by Pectobacterium carotovorum subsp. carotovorum was reported to be severe disease to Chinese cabbage in spring seasons. The antifungal bacterium, Bacillus sp. CAB12243-2 suppresses the soft rot disease on Chinese cabbage with 73.0% control efficacy in greenhouse assay. This isolate will increase the utilization of rhizobacteria species as biocontrol agents against soft rot disease of vegetable crops. Sclerotinia rot caused by Sclerotinia sclerotiorum has been reported on lettuce during winter. An antifungal isolate of Pseudomonas corrugata CAB07024-3 was tested in field bioassays for its ability to suppress scleritinia rot. This antagonistic microorganism showed four-year average effects of 63.1% of the control in the same field. Furthermore, P. corrugata CAB07024-3 has a wide antifungal spectrum against plant pathogens, including Sclerotinia sclerotiorum, Sclerotium cepivorum, Botrytis cinerea, Colletotrichum gloeosporioides, Phytophotra capsici, and Pythium myriotylum.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.21 no.3
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• pp.18-29
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• 2022

Recently, cooperative intelligent transport systems (C-ITS) testbeds have been deployed in great numbers, and advanced autonomous driving research using V2X communication technology has been conducted actively worldwide. In particular, the broadcasting services in their beginning days, giving warning messages, basic safety messages, traffic information, etc., gradually developed into advanced network services, such as platooning, remote driving, and sensor sharing, that need to perform real-time. In addition, technologies improving these advanced network services' throughput and latency are being developed on many fronts to support these services. Notably, this research analyzed the network latency requirements of the advanced network services to develop a remote driving service for the droid type low-speed robot based on the 3GPP C-V2X communication technology. Subsequently, this remote driving service's performance was evaluated using system modeling (that included the operator behavior) and simulation. This evaluation showed that a respective core and access network latency of less than 30 ms was required to meet more than 90 % of the remote driving service's performance requirements under the given test conditions.

• Journal of Korean Library and Information Science Society
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• v.10
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• pp.133-155
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• 1983

Most important of all was the concept of library life-long education on which the studies were to be based. This concept has been broad, both in its interpretation of what constitutes a "program" and of what life-long education in a library is. No formal definition was adopted, but a common understanding existed that a fundamental purpose of the public library is to provide the means of continuing education, and to encourage the most effective utilization of these means through a program of activities whose effects are continuous and cumulatives. There are educational program, socio-cultural program and recreational program in the life-long education program of the public library. These programs can be planned by which the public library developed its resources and its services. services.

• Journal of Information Technology Services
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• v.10 no.2
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• pp.95-117
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• 2011

Today, IT governance has also become a subject of attention along with recent technologies such as ITSM (IT Service Management), PPM (Project Portfolio Management) and Compliance. At the national level, the market is fairly recent. and therefore, lacks detailed research in the field. Models specifically related to EIM has not yet been presented to this day, hence, firms that are considering EIM as a potential part of their information management system may fall into a state of disorder in the process of its implementation. To this end, this research attempts to construct an IT governance model for EIM based on existing models, surveys and interviews. In particular, E-discovery has been applied as means of protecting information assets and its use as evidence. In addition, by applying the research model to a particular global firm and then assessing its documentation management system, the overall feasibility of the research model has been tested.

• Journal of Information Technology Services
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• v.2 no.1
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• pp.25-34
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• 2003

Spam mail is one of the side effect of the development and improvement of the internet that restrains the privacy of the individual on line. However indiscriminate application of Spam mail blocking can also cause significant violation on freedom of doing business to the fluent commercial transactions on line. Therefore this research looks at the exact understanding of the concept of Spam mail and inquiry on Its issues. Also it looks at the case studies of its institutional solutions in USA and Europe as well as the advantage and disadvantage of the case studies on its technical solution. Finally, the research inquires into overall prevention of Spam mail, which considers both technical and institutional soiution. With this research, limitations of current Spam mail prevention system and technology are pointed out and more effective course of overall Spam mail prevention solution is studied.

• Journal of Information Technology Applications and Management
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• v.28 no.5
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• pp.17-39
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• 2021

Indonesia's industrial application of digital technology is growing fast, especially in the application of mobile technology. About 1,700 digital startups are sprouting. PT Aplikasi Karya Anak Bangsa is one of those digital startups founded in 2010. This company is widely known, especially in Southeast Asia, for its products and services called 'Gojek' which was launched initially in 2015. Gojek began as a ride-hailing mobile-based application that later evolved into a Super App providing more than 20 different services in one single mobile application. After becoming Indonesian first unicorn company in 2016, Gojek now has become the first decacorn company in Indonesia, worth more than USD 10 billion since 2019. This paper aims to analyzes the technology industry in Indonesia and analyzes Gojek's background and history, its competitive status, and critical success factors. As a conclusion, we provide some advices for future development of Gojek in Indonesia and other countries in Southeast Asia's market. The advices include rebranding its overseas presence and the use of consistent brand identity across countries.

• Journal of Information Technology Applications and Management
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• v.16 no.2
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• pp.45-63
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• 2009

China has the largest number of the user of web 2.0 such as messengers and blogs, as of 2008 year. Chinese Internet digital market will grow from $85 billion in 2007 to $264 billion in 2015. The importance of Chinese Internet business is increasing, because of its size and growth potential. This research is focused on following two questions. First, what are the major characteristics of social networking services in China? In order to find out the answer about this question, the case study on Tencent QQ and Sina Poco, the most representative social networking services company in China, was done. And the reason of the use of social networking services, their contents, and the attitude toward the paid service were identified. Second, what are the major factors influencing the use of social networking services in China. User participation, network effect, usefulness, and system quality were inferred as the factors influencing the use. These factors were based on motivation theory, technology acceptance model, and the related research papers. This research model was proved by data analysis using Partial Least Square. As results, the use of social networking services was influenced by usefulness, network effect, user participation, and system quality. But social influence was not significant of the use of social networking services.