• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2015.10a
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• pp.239-240
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• 2015

This study aims to clarify current situation of transportation flow and determine to demand forecasting in new route between Korea and Mongolia. By follows the mongolia government information, there will be open 5 new routes in nearest 10 years. Thus, this study purpose is determining the efficiency way by consider time and cost factors for new route between Korea and Mongolia.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.34 no.5
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• pp.1525-1534
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• 2014

In recent years, the passengers are likely to decide their route on impulse due to the development of the integrated public transport system, and real-time information system. Especially, public transport fare integration in Seoul Metropolitan area, 2004 makes them not to have resistance about changing the modes or routes and their route choice is most effected by the degree of congestion. Assignment model have limitations to describe route changes by congestion. In this study, the concept of a link cost function used in road assignment and Effective frequency is introduced to describe the passengers' behavior when the capacity of public transport is over and the waiting time variation. Two situations, new transit line operation and accident, are set up to validate the model, as a result of the transit assignment by this model, the traffic on networks is not over the capacity. It is expected that this study will be of help to reflect the various behaviors in transit assignments.

• Journal of KIISE:Information Networking
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• v.32 no.2
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• pp.215-219
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• 2005

Generally, the mobile nodes in MANET have the limited power capacity available for actual communications. Thus, the power management is very important for packet routing or forwarding. Although MTPR, MBCR and MMBCR are proposed to treat the problem of power consumption, there have been few researches resolving the link breakdown that is occurred by the power exhaustion during transmission. In this sense, the reliable scheme should be required to ensure the routing connectivity. In this paper, we propose three schemes to enforce the routing connectivity. If the signal strength is dropped below a signal threshold, the candidate route is previously selected to prepare the link breakdown. Also, on multi-channel, we propose the lifetime increment scheme of a node that it manage its available power to the needed power of a new link. The simulation results show the enforcement of the link connectivity and the performance improvements of the delay time through the effective connection management.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.11
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• pp.537-544
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• 2016

National Competency Standards (NCS) need to be introduced to train newly hired staff and to gradually improve employees' work performance in the information security industry. In particular, the introduction of a new NCS curriculum for new hires is important in order to retain and efficiently manage professionals in the information security field. However, the legacy NCS is not clearly designed for the information security field. So a formal curriculum has been suggested for institutions training the information security workforce. Therefore, this study establishes a competency unit based on the types of personnel, their duties, and required knowledge. To select the competency unit, this study reviewed prior research to understand the required skills and work knowledge, and reviewed recruitment-based NCS that public agencies and public and private companies have carried out, including them in the study. The selected competency unit was classified into a required competency unit and an elective competency unit based on the importance of the duties and the demands of training. Through a verification process for the new, licensed career path model in the NCS information and communications field, this study suggests updated NCS competency units and required courses to provide an appropriate NCS curriculum for newly hired employees in the information security industry.

• The KIPS Transactions:PartC
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• v.12C no.5 s.101
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• pp.701-708
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• 2005

The mobility prediction algorithm and the channel reservation scheme have been reported as an effective means to provide QoS guarantees and the efficient resource reservation in wireless networks. Among these prediction algorithms, the recently proposed Detailed-ZMHB algorithm makes use of the history of the user's positions within the current cell to predict the next cell, which provides the better prediction accuracy than the others. The handoff prioritizing schemes are proposed to provide improved performance at the expense of an increase in the blocking probability of new calls. In the soft handoff of the CDMA systems, a mobile can communicate via two adjacent cells simultaneously for a while before the actual handoff takes place. In this paper, we propose a new channel reservation scheme making use of the user mobility pattern information in order to reduce the call dropping probability. Our results show that the proposed scheme gives about 67.5-71.1$\%$ lower call dropping probability, compared to the existing scheme.

• Journal of Korean Society of Forest Science
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• v.102 no.3
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• pp.398-406
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• 2013

Afforestation/reforestation (A/R) clean development mechanism (CDM) is the only forestry-based activities allowed under the Kyoto protocol. This study was conducted to develop a methodology to estimate greenhouse gas (GHG) removals of a small scale A/R CDM pilot project in Goseong, Gangwon Province, Korea. AR-AMS0001 was applied as a methodology and selected tree species were Pinus koraiensis, Larix kaempferi, and Betula platyphylla for total area of 75.0 ha. To improve the accuracy on the GHG removals estimation, selection of the baseline scenario and carbon pools and stratification of the project site were conducted. Based on the developed methodology, net anthropogenic GHG removals were estimated as actual net GHG removals, subtracted by baseline net greenhouse gas removals and leakage. As a result, anthropogenic GHG removals of the project were 12,415 ton $CO_2-e$ and 165.5 ton $CO_2-e/ha$. This project is the first A/R CDM in domestic site and could enhance the technical accuracy of the GHG removals estimation by using countryspecific data reflecting the site condition.

• Journal of Industrial Convergence
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• v.20 no.12
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• pp.87-96
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• 2022

The Ministry of Land, Infrastructure and Transport has also been promoting the commercialization of land transport technology to commercialize the technologies owned by small and medium-sized venture companies, and to support the transfer and commercialization of public technologies. At this point, in order to improve the investment effect of subsequent new projects and to select excellent research institutes, it is necessary to establish a valid evaluation index system suitable for the purpose of the project. The evaluation index system for subsequent new projects should be linked to the project objectives and goals of the preceding project, and should be selected in consideration of existing evaluation indicators to prevent interruption of research results. Therefore, this thesis sets the evaluation index system into multiple scenarios through hierarchical cluster analysis using the evaluation result data for each evaluation committee for small and medium venture companies participating in the land transportation technology commercialization support project, and then analyzes the structural equation model. As a result of scenario analysis, considering the measurement effect of each path representing the causal relationship between evaluation indicators and the effect of each evaluation index on evaluation items, the scenario with the highest impact on the evaluation result was selected as an improvement plan.

• Proceedings of the Korean Information Science Society Conference
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• 2011.06c
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• pp.176-179
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• 2011

본 연구에서는 T-Test와 Genetic Algorithm을 사용해 Luminex 사용 환경에서 난소암을 진단할 수 있는 바이오마커의 조합을 찾고 Cancer와 Normal간의 분류 성능을 평가해 보았다. 바이오마커는 혈액, 체액 내의 특정 질환 여부나 상태를 나타내는 단백질, DNA들의 지표 물질이다. 정상인과는 다른 분포를 가진 성분이 환자의 혈액이나 체액에서 발견되면 이를 토대로 질병유무와 상태를 판단할 수 있다. 난소암을 진단할 수 있는 바이오마커 조합을 찾기 위해 T-Test와 Genetic Algorithm를 사용하여 분류성능이 좋은 바이오마커 조합을 각각 선별해 보았고, 선별된 각각의 마커조합을 선형분류기(LDA)를 사용해 평균 민감도, 특이도, 정확도를 비교해 보았다. 실험데이터는 두 곳의 병원에서 제공받은 총 58명(Cancer 27명, Normal 31명)의 혈청에서 21 종류의 바이오마커 데이터를 Luminex-PRA를 통해 얻었다. 본 연구에서는 T-Test로 만들어진 마커조합이 Genetic algorithm으로 만들어진 마커조합 보다 더 좋은 민감도, 특이도, 분류정확도를 보여주었다.

• Proceedings of the Korean Information Science Society Conference
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• 2011.06c
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• pp.180-183
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• 2011

본 논문에서는 진단 검사 의학 분야에서 통계적 지식이나 도구사용능력이 부족한 임상의학자들을 위해 개발된 통계적 데이터 분석 시스템을 소개한다. 개발된 시스템은 질병진단에 필요한 다중 바이오마커 데이터를 Luminex장비를 통하여 측정한 후, 분석이 용이한 형태로 변환하는 시각화 기술과 데이터에 내재된 패턴을 찾아내어 유용한 지식을 생성하는 데이터 마이닝 기술을 포함한다. 주요 모듈로는 마커선택, 데이터 시각화, 마커 평가 모듈로 구성되며 MATLAB을 기반으로 개발되었다.

• Journal of the Korean Arthroscopy Society
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• v.6 no.2
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• pp.150-155
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• 2002

Purpose : The purpose of this study was to evaluate the clinical results of meniscal repair using the bioabsorbable devices. Materials and Methods : From 1998, 21 meniscal repairs were underwent using the bioabsorbable devices and followed more than 1 year. The Meniscus $Arrow^{\circledR}$(Bionx) and the Meniscal $Fastener^{\circledR}$(Mitek) had been applied. The indication for meniscus refixation was an unstable longitudinal tear in the posterior horn of the medial or lateral meniscus. Concurrent ACL reconstruction with meniscal repair was performed on 9 knees. The clinical result was evaluated using Lysholm knee score. Result : The average Lysholm knee scores for all patients improved from 56 preoperatively, to 89 postoperatively. The type of the device were not significantly related to clinical outcome or Lysholm knee score. But the concurrent ACL reconstruction group and the patients treated within 8 weeks had better clinical result than the others. Conclusion : The all-inside meniscal repair technique using bioabsorbable devices can be considered to be an useful method in the well selected patients and concurrent ACL reconstruction surgery.