• 대한공업교육학회지
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• v.30 no.1
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• pp.133-148
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• 2005

This research attempts to establish a strategy through which to secure the introduction of the KEM 2.0 system. Another aim of this research is to eventually establish a service system which can be used to automatically generate and provide the metadata information contained in the Cylearn system. in order to facilitate Korean vocational high school students access to teaching-learning materials. The main research tasks associated with this research were: 1) To establish the components of the file server system while taking into consideration the environment in which each educational organization operates; 2) To utilize the KEM 2.0 in order to optimize the configuration of the Cylearn system and the related software. To do so, the KEM 2.0. should be applied in close coordination with Edunet: The results of this research can be summarized as follows: First, a strategy to introduce the KEM 2.0 was established. To achieve this, the researcher analyzed the characteristics of the sequencing and presentation methods and suggested teaching-learning materials based on the KEM 2.0.s sequencing system. Second, the file server was constructed using the KEM 2.0. The established file server took into account the environmental conditions in which the Edunet system operates so as to facilitate the creation of a network system with Edunet. Third, the Cylearn service system was linked to Edunet. The researcher developed a module using the KEM 2.0. that could be used to transmit the metadata related to teaching-learning materials to Edunet. To achieve this, an input device and a databank which could be used to transfer the generated metadata to Edunet were developed. The input device and databank developed using the KEM 2.0. were used to transfer the metadata to Edunet by linking the Cylearn system to the Edunet system.

• Proceedings of the Korea Information Processing Society Conference
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• 2005.05a
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• pp.509-512
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• 2005

인터넷과 웹과 같은 정보사회의 교육환경 변화에 따른 교육정보의 교류 수요의 급속한 증가에 따라 교육정보 자료에 대한 메타데이터의 표준이 필요하게 되었다. 이에 따라 국내에서는 개별적으로 개발되고 있는 교육정보 자료를 통합적으로 공유, 재사용하기 위하여 KEM(Korea Education Metadata) Ver 2.0을 한국교육학술정보원에서 개발하였다. 또한 해외에서는 최근 급증하고 있는 멀티미디어 데이터의 적절한 표현을 위하여 MPEG-7 표준이 제정되었다. 본 논문에서는 다양한 형태의 교육정보 자료 중에서 교육정보 이미지에 대한 검색시스템을 설계하였다. 본 검색시스템의 설계는 한국교육학술정보원에서 개발된 KEM Ver 2.0을 수용하기 위하여 교육정보 이미지의 메타데이터 표현을 KEM Ver 2.0에서 제안된 메타 데이터 표현을 MEPG-7으로 확장한 XML 스키마를 사용하였다. KEM Ver 2.0 기반의 high-level 메타데이터와 MEPG-7 기반의 low-level 메타데이터를 이용함에 따라 국내에서 사용되는 교육정보 이미지의 상호교환 뿐 아니라 체계적이고 빠른 검색과 추출이 가능할 것이다.

• Journal of the Korea Society of Computer and Information
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• v.10 no.4 s.36
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• pp.155-164
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• 2005

WThe education information have been increased. Accordingly, the necessary of developing on education information metadata standards has been increased. By the reason, the Korea Education & Research Information Service developed KEM(Korea Educational Metadata) 2.0. And MPEG-7 was developed to describe metadata of multimedia data. In this paper, we developed a education information image retrieval system. This system used XML schema to accept education information image metadata. We integrated contents-based retrieval and a semantic-based retrieval to overcome there problems that content-based retrieval system can not support semantic-based retrieval and a semantic-based retrieval can not support content-based retrieval. As a results, we expect to handle metadata more efficiently.

• Animal cells and systems
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• v.16 no.1
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• pp.50-56
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• 2012

Kelp grouper ($Epinephelus$ $bruneus$ Bloch 1793) is a commercially important fish in Korea. In recent years, the catch of kelp grouper in the coastal waters of Korea has significantly declined. Despite its importance, little is known about its genetic diversity and conservation efforts are hampered. In this study, we isolated and characterized 12 microsatellite loci using an enrichment method based on magnetic/biotin capture of microsatellite sequences from a size-selected genomic library. All loci were readily amplified and contained TG/CA denucleotide repeats. To characterize each locus, 30 individuals from a natural E. bruneus population in the coastal waters of Jeju Island, Korea, were genotyped. All loci except three, KEm118, KEm154, and KEm219, were polymorphic, with an average of 8.1 alleles per locus (range 2-18). The mean observed and expected heterozygosities were 0.47 (range 0.19-1.00) and 0.61 (range 0.29-0.92), respectively. A significant deviation from Hardy-Weinberg equilibrium was observed at three loci (KEm134, KEm184, and KEm283). These findings will be useful for effective monitoring and management of genetic variation of kelp grouper as well as for the implementation of a fisheries conservation program.

• Journal of Environmental Science International
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• v.19 no.10
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• pp.1301-1305
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• 2010

This study was carried out to investigate the effect of KEM and SAF appication on contents change of fatty acids and organic acid of perilla(Perilla Frutescens Britton). Contenst of squalene in perilla leaves on control and KEM/SAF treated were 3.39 mg and 4.22 mg, respectively. Therefore the squalene quantity of KEM/SAF treated leaves was 24.2% more than that of control. A total 6 fatty acids in perilla leaves were analyzed in this study. Percentage of the saturated and unsaturated fatty acid in perilla leaves were 20 and 80%, respectively. Contents of phytosterols in perilla leaf such as campesterol and sitosterol were 2.0 and 20.0 mg, respectively. Therefore sitosterol content was 10 fold more than that of campesterol. The KEM/SAF application on perilla leaf was effective on the change of squalene or phytosterol contents. However effect of that was negligible on the change of fatty acid content.

• Journal of Korean Society of Environmental Engineers
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• v.36 no.4
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• pp.277-285
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• 2014

The usage of efficient microorganism (EM) is increasing in concern for server purposes including odor removal during carcasses degradation. In this study, we have studied the type of soil and its effect on efficient microorganisms for the removal of odorous gases during buried carcasses degradation in lab-scale reactor. The carcasses are buried in the reactor with various soil types such as normal soil, 20% sandy and 20% clay soil with the efficient microorganism KEM. The efficient microorganisms KEM have the ability to stabilize the degradation of carcasses of the burial site. We have focused on the analysis of odorous gases such tri-methylamine (TMA), hydrogen sulfide ($H_2S$), methyl mercaptan (MM), dimethyl sulfide (DMS), dimethyl disulfide (DMDS), carbon dioxide ($CO_2$), and methane ($CH_4$) along with the changes of microbial community changed during complete degradation of buried carcasses for a year. The results suggested that the 20% sandy soil contain lesser level of $H_2S$ and MM (0.09 and 0.35 mg) but 20% clay has higher nitrogen compound removing effect and leave only less amount of ammonia and TMA (0.31 and 2.06 mg). The 20% sandy soil also has the ability to breakdown the carcasses more quality compared with other types of soil. Based on the data obtained in this study suggesting that, the use of 20% sandy soil can effectively control sulfur compounds whereas 20% clay soil controls nitrogen compounds in the buried soil. Depending on the type of the soil, the dominant of microbial communities and the distribution was change.

• Proceedings of the KIEE Conference
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• 2009.07a
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• pp.66_67
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• 2009

전력거래소는 전력IT 국가전략과제 중 하나인 한국형 에너지관리 시스템(Korean Energy Management System)개발[1]의 총괄을 담당하고 있으며, KEMS의 각 개발단계인 Baseline, Prototype, Fullscale에서의 단위, 실증, 통합 등의 모든 시험을 주관한다. KEMS는 세부 5개 과제의 여러 산학연 기관들이 참여하는 대규모 프로젝트로 통합된 시스템의 시험관리가 매우 중요하다. 전력거래소에서 사용하는 통합시험관리시스템(Total Project Administration System)은 KEMS의 이러한 통합된 시험관리를 웹에서 가능하도록 해주는 시스템으로, 시험 진행 중 발생되는 Variance를 발행하고, 그에 대한 보완계획을 입력하고 해결여부를 추적하는 것이 주된 기능이다. 이 논문에서는 현재 버전 2.0까지 개발되어 사용되고 있는 TOPAS시스템과 KEMS개발에서의 시험관리 방법 등에 대하여 살펴보고자 한다.

• Proceedings of the Korean Information Science Society Conference
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• 2005.11b
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• pp.139-141
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• 2005

최근 인터넷의 발달에 따라 XML 문서의 사용과 각종 영상정보의 양이 크게 증가되었다. 이에 따라 XML 문서를 관리하기 위한 XML 데이터베이스의 필요성과 메타데이터 표준화에 대한 중요성이 증가되고 있다. XML 데이터베이스는 XML 문서의 특성을 고려하여 그 특성을 효율적으로 지원할 수 있다. 또한 국내에서는 교육정보분야 메타데이터 표준인 KEM 2.0이 제정 되었고 국외에서는 멀티미디어 데이터에 대한 표준으로 MPEG-7이 제정이 되었다. 이에 따라 본 논문에서는 MPEG-7을 기반으로 KEM 2.0을 이용한 영상정보 XML 스키마를 생성하고 이를 이용한 영상정보 검색시스템을 XML 데이터베이스 기반으로 설계하고자 한다. 본 논문에서 설계하는 XML 데이터베이스 기반의 영상정보 검색시스템은 XML 문서에 대한 빠른 저장과 검색이 가능할 것이다. 또한 검색 기능에 있어서는 키워드 기반의 의미기반 검색과 유사 이미지를 통한 내용기반 검색, 그리고 이를 내용기반과 의미기반을 통합한 검색 기능을 제공할 것이며 XML 문서에 대한 강력한 질의 수단인 XQuery 질의를 포함하게 될 것이다.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.34 no.2
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• pp.157-166
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• 2024

Probability of decryption failure of a public key cryptography based on LWE(learning with errors) is determined by its architecture and parameter settings. Since large decryption failure probability leads to attacks[1] on scheme as well as degradation of performance, TiGER[2], a Ring-LWE(R)-based KEM proposed for the first round of KpqC, tried to reduce the decryption failure probability by using error correction code Xef and D2 encoding method. However, D'Anvers et al. has shown that the commonly assumed independence of each bit error is not established since in the case of an encryption scheme based on Ring-LWE(R) using an error correction code, there is error dependency which is not negligible[3]. In this paper, since TiGER does not consider the error dependency, we calcualte the decryption failure probability of TiGER by considering the error dependency. In addition, we found that the bit error probability is incorrectly calculated in TiGER, so we present the correct calculation.

• Proceedings of the KIEE Conference
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• 1991.07a
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• pp.753-756
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• 1991

This paper aimed to analyse dose sensitivity to the controllable parameters of in-door radon $(^{222}Rn)$ and its decay products(Rn-D) by applying the input-output linear system theory. Physical behaviors of $^{222}Rn$ & Rn-D were analyzed in terms of $^{222}Rn$ gas generation, -migation and - infiltration to indoor environments, and the performance output-function(i.e. mean dose equivalent to Tracho-Bronchial(TB) lung region was assessed to the following ranges of the controllable parameters; a) the ventilation rate constant $({\lambda}_v)$ : $0{\sun}500[h^{-1}]$. b) the attachment rate constant$({\lambda}_a)$ : 0-500 $[h^{-1}]$. c) deposition rate constant $({\lambda}{_{d}^{u}})$: 0-50$[h^{-1}]$. A linear input-output model was reconstructed from the original models in literatures, as follows, which was modified into the matrices consisting of 111 nodal equations. a) indoor ${222}Rn$ & Rn-D Behaviour: jacobi- Porstendorfer- Bruno model. b) lung dosimerty : Jacobi-Eisfeld model. Some of the major findings, which identify the effectiveness of this model, were as follows. a) ${\lambda}_v$ is most effective, dominant controllable parameters in dose reduction, if mechanical ventilation is applied. b) ${\lambda}_v$, depending on the air particle-concentration, reduces the dose somewhat within ${\lambda}_v$<1 $h^{-1}R range. However, the dose increases conversely, ${\lambda}_v$>1 $h^{-1}R range range. c) ${\lambda}{_{d}^{4}}$ reduces the dose linearly as ${\lambda}_v$ dose. Such dose(z-axis) sentivities are shown with three-dimensional plots whoes x,y-axes are combined 2out the 3 parameter${\lambda}_v{\lambda}_s,\;{\lambda}_d^s$.