• Journal of Biomedical Engineering Research
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• v.38 no.3
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• pp.129-136
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• 2017

The exoskeleton robot is a technology developed to be used in various fields such as military, industry and medical treatment. The exoskeleton robot works by sensing the movement of the wearer. By recognizing the wearer's daily activities, the exoskeleton robot can assist the wearer quickly and efficiently utilize the system. In this study, LDA, QDA, and kNN are used to classify gait types through kinetic data obtained from subjects. Walking was selected from general walking and stair walking which are mainly performed in daily life. Seven IMUs sensors were attached to the subject at the predetermined positions to measure kinematic factors. As a result, LDA was classified as 78.42%, QDA as 86.16%, and kNN as 87.10% ~ 94.49% according to the value of k.

• Journal of the Korean Association of Geographic Information Studies
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• v.10 no.1
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• pp.84-91
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• 2007

As GPS equipments improve, one can acquire GPS data easily in the field. To obtain precise and accurate coordinates, however, post processing is additionally required and the processing needs high degree of skills. Besides, it is very common that we cannot operate processing softwares in the field because the required system environment is usually not prepared. The aim of this study is the development of an internet-based GPS data processing service. For post processing, we used GIPSY developed by JPL. It has many advantages such as obtaining coordinates quickly by using precise or predicted ephemeris. This service proceeds as following orders by interlocking GIPSY software and internet service which is operated on a Linux platform: Users upload the raw data file on the internet, then GIPSY runs automatically and then the user gets the result in the field. We use an Apache web server as the hosting program and PHP scripts are used in coding web pages. The total processing time including data-uploading was around 30 seconds for a 24-hour data with a 30-second sampling rate.

• Proceedings of the Korea Information Assurance Society Conference
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• 2004.05a
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• pp.259-265
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• 2004

Since the 2003.1.25 Internet Crisis, the government has been looking at a number of options to strengthen national cyber-security/crisis management capability to guard against ever increasing threat of cyber-war and terror. Thus, the focus of this study was to explorer new ways of developing a comprehensive cyber-security/crisis management system, in particular by combining modern social-science analytic theories. As a result, although there has to be more in-depth researches into incorporating advanced techniques to generate more detailed and object-specific indexes and protocols, the use of 'event data system,' which has been widely utilized in many recent social science researches to assess a wide-range of socio-political risks and crises, could be adopted as a basis for a comprehensive nationwide cyber-risk management system.

• Convergence Security Journal
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• v.15 no.3_1
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• pp.107-114
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• 2015

Since 2002, information security management system has been implemented (ISMS) certification scheme whilst providing telecommunications services to enhance the level of enterprise information security was ongoing and Prevent accidents and avoid spread of infringement, such as rapid response and there is a lot of it came true. However, this system is the protection of the country or the investment company, as part of the actual information on how management affects the performance came from or how measures are still lacking for. In this study, the companies have their own privacy ISMS certification measures the level of activity continued to improve information security performance measures and methodology are presented. The government is also based on the validity of the certification system to ensure the overall implementation of the ISMS itself is this a step increase effective information security system is to be certified in advance to prevent security incidents and to improve business performance to help.

• Journal of the Korea Institute of Building Construction
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• v.12 no.4
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• pp.415-425
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• 2012

Green Frame was developed to embody a Green structural system that can provide long life, resource reduction, and availability of remodeling in apartment buildings. Composite precast concrete column and beam, the major structural material of Green Frame, can be installed precisely and promptly through connection of steels and concrete. The connection of Green Frame can be divided into four types, based on the method and characteristics of connection. To select an appropriate type for the site, a comparative analysis of the four types is necessary. The objective of this study is to compare the duration, cost, quality, and safety of four types. The findings of this study can be applied during the selection that appropriate composite precast concrete column reflected project characteristics in design phase.

• KSBB Journal
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• v.17 no.2
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• pp.158-161
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• 2002

In this study, a prototype fiber-optic biosensor was fabricated using the inhibition of enzyme reaction by organophosphorus compounds to detect organophosphorus compounds, which is nervous toxic material an? is used as chemical weapon and pesticide. Enzyme, substrate, and inhibitor for enzyme reaction were acetylcholinesterase (key enzyme in nervous cell), acetylthiocholine iodide, and paraoxon (a kind of organophosphorus compounds), respectively. The detection principle of sensor is the detection of enzyme reaction inhibited by organophosphorus compounds by the quantitative measurement of acetic acid, which was achieved by absorbance measurement using litmus solution that maximum absorbance band is changed by pH. To fabricate prototype fiber-optic biosensor, high bright LED and photodiode was used as light source and light intensity detector, respectively. From the experimental results using a prototype biosensor, the linear change of sensor signal was obtained in a range of 0-2 ppm inhibitor concentrations. From these results, it was verified that the quantitative measurement of organophosphorus compounds could be achieved fast (within 2 minutes) and accurately by a prototype fiber-optic biosensor.

• The Journal of the Korea Contents Association
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• v.7 no.12
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• pp.123-130
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• 2007

The purpose of this paper is to capture risk profiles of smaller-sized Korean firms $vis-{\grave{a}}-vis$ larger-sized firms during the Asian financial crisis. For this purpose, risk profiles are provided by estimating expected default risks and by tracking how these have changed during this period with respect to their magnitude, volatility, and sensitivity measures. Methodology used in this study employs the Black-Scholes-Merton model for producing estimates of default risks. And the conventional trans-log function is utilized for obtaining sensitivity measures of the estimated default risks. According to empirical evidence obtained here, it is revealed that contractions of corporate loans associated with IMF austerity policy was the main factor responsible for the drastic change in the default risk profile of Korean firms after occurrence of the Asian financial crisis.

• Journal of the Korean Association of Geographic Information Studies
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• v.13 no.3
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• pp.91-101
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• 2010

As global warming has caused the number of abnormal changes in climate to increase throughout the world, much damage has occurred recently in Korean Peninsula which results from unexpected heavy rains, landslides, and floods from typhoons. To prevent and cope with these annually repeated natural hazards, the overall improvements are needed, including systematic management of the existing natural hazard information and improvement of hazard information. In this study, multi-purpose hazard information map based on digital image was constructed as an effective way to enhance hazard management considering regional characteristics and hazard response capabilities in the field. Multi-purpose hazard information map with a new concept by fusion of geospatial information and hazard attribute information is able to support quick decision for hazard management making and development of hazard information system.

• Proceedings of the Korea Water Resources Association Conference
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• 2007.05a
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• pp.860-864
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• 2007

본 연구의 목적은 한국건설기술연구원에서 운영하는 설마천 시험유역을 대상으로 신뢰성 있는 수문자료를 지속적으로 수집하여 정확한 물 순환 과정을 규명하는데 있다. 강우량, 수위, 유속, 유량, 수질, 부유사량, 기상 등의 기본적인 수문관측 자료를 축적하는 것과 수집된 자료를 이용하여 유역의 유출특성 분석, 수문관측 기술개발과 각종 관측기기의 적합성 검증과 측정방법을 개선하는데 있다. 설마천 시험유역 수문관측은 해마다 노후화된 관측기기의 교체 및 추가 설치, 실시간 전송장비의 보완 및 운영, 각 관측소당 2종 이상의 동시 관측자료 확보 등을 통해 자료의 결측을 최소화하였으며, 정확도를 개선하여 양질의 자료를 생성할 수 있었다. 관측된 우량과 수위 자료에 대하여 일상적인 자료 검토 및 처리 과정을 보다 구체적으로 체계화하여 자료의 질이 향상될 수 있도록 하였으며, 특히 유량 측정 및 산정 방법을 국제 기준에 준하여 수행하여 보다 정도 높은 유량측정성과를 확보할 수 있었다. 이렇게 다각적인 방법으로 안정적인 관측 자료를 확보한 결과, 동절기를 제외한 전적비교와 사방교에서 무결측의 유역평균우량과 유량자료를 구축할 수 있었다. 그리고, 본 연구에서는 실시간 전송장비와 설마천 시험유역 홈페이지(http://kict.datapcs.co.kr)를 통해 실시간으로 우량과 수위 자료를 인터넷과 PCS로 확인할 수 있도록 시스템을 운영하였으며, 이로 인해 언제 어디서나 설마천 시험유역의 현장상황을 신속하게 파악할 수 있도록 하여 자료의 질을 향상시킬 수 있는 기반을 구축하여 운영 중에 있다. 본 시험유역의 주요 연구 내용으로는 수문 기상관측, 수문 기상자료 정리 검토, 기본 수문특성 분석, 수문관측방법의 비교 검토 등을 수행하였으며, 기본 수문특성 분석 내용으로는 호우사상 현황 분석, 지속기간별 최대 강우량 분석, 2종 우량계간의 강우량 비교, 6개 지점간 강우량 비교, 주요 호우사상의 시 공간적 분포 특성, 연간, 월별, 주요 호우사상별 유출률 분석과 부유사량 및 수질분석 등을 수행하였으며, 이로써 산지 소하천 유역의 물 순환 과정을 보다 명확히 규명하고자 노력하였다.

• Journal of Information Management
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• v.36 no.2
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• pp.125-151
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• 2005

The eight types of Korean bibliographic information of biology and life science are included in PubMed that serves universal medical bibliographic information. Other domestic bibliographic information are served on its own format at different organizations. To fulfill the CCBB homepage user's request that it is necessary that integration of bibliographic service for quick acquisition of research information, we intends to construct metadata registry and service about bibliographic information of biology and life science. This paper describes the design and implementation of bibliographic information network prototype for biology and life science that can be used to share latest research result, seminar presentation data, research note, and research paper etc as well as to exchange information between researchers through Open Archiving Community.