• Journal of the Korean Society for information Management
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• v.17 no.4
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• pp.229-248
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• 2000

Among several learning algorithms for lexl calegoriration. SVM(Snpport Vsctor Machines) has been provcd to ouq~e~fotm other classifiers. Th~study e~~aluales the categarizalion ability of en SVM classifier using the ModApte split of the Reutcrs-21578 dataset. First. an experiment 1s perlormed to test a few feature wetghtlng schemes that will be used in thc calegarization tasks. Second, (he categorization periarrnances of the lulear SVM and the non-linear SVM are compared. Finally. the binary SVM classifier is expanded into a multi-class classifier and thek pcrforrnnnces are comparativcly evaluated.

• Proceedings of the Korean Geotechical Society Conference
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• 2009.03a
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• pp.961-965
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• 2009

Using much electric resistivity survey to design or preservation administration of facilities. However, By survey method that electric resistivity survey grasps special quality in base by potential difference creating artificial current in underground, Is influenced in electric resistance propensitys of various underground utilities in base. This Study selects dam 1 place that could grasp well underground situation and studied electricity interference effect by effect of underground utilities. Grasp underground utilities of dam interior, and control and observed accuracy with survey wave because various pole space. Through this Study, wish to present survey method of electric resistivity survey at design or survey of preservation administration dimension after with drawn result.

• Proceedings of the Korean Geotechical Society Conference
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• 2008.10a
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• pp.1285-1289
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• 2008

Increasing the flood control capacity's link that is enforcing to existing dam by unusual change of weather, While build planing construction by exiting spillway of tunnel type to dam, could know that part bed rock is formed as is different with design. Grasped topography of research area and geology state to definite distribution aspect of different bed rock, Place that achieved Surface geological Survey and correct Survey is difficult in some section enforced Electrical resistivity dipole-dipole investigation. Grasped stratigraphy distribution confirmation and fracture or weathering zone making out siding 2D-Resistivity Electrical resistivity diagram and Reverse analysis diagram, examining closely soil weathered rock rock's distribution state, established stability countermeasure plan

• Proceedings of the KIPE Conference
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• 2013.07a
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• pp.341-342
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• 2013

TNY280PN IC의 모델링은 Flyback 컨버터 제어의 실제적인 시뮬레이션을 위해 필요하다. 본 논문은 PSPICE를 사용한 TNY280PN IC의 모델링 기법을 제안한다. TNY280PN IC의 스위칭 동작 온, 오프 제어와 Line Under-Voltage 감지 기능을 하는 EN/UV (Enable/Under-Voltage) 및 회로의 비정상적인 동작을 감지해 회로를 보호하기 위한 Auto-restart 블록의 모델링 기법을 제안한다.

• Proceedings of the Safety Management and Science Conference
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• 2008.11a
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• pp.475-489
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• 2008

1987년 최초의 ISO 9000 (품질경영시스템) 패밀리 규격이 발행된 이래, 기업의 경영 시스템(Management System)의 핵심이 되는 MS 규격으로서 QMS(ISO 9001), EMS(ISO 14001), ISMS (ISO/IEC 27001) 등이 발행 또는 개정되어 왔다. 또 QMS 섹터 규격인 항공 우주 (AS/EN 9100), 의료기기 (ISO 13485), 정보통신 (TL 9000), ITSMS(ISO 20000), FSMS (ISO 22000), SCSMS (ISO 28000) 등이나 새로운 MS 규격이 되는 GHG(ISO 14064), IPOCM(ISO/PAS 22399), SR(ISO/CD 26000) 등 ISO 또는 비ISO 의 MS 규격이 차례차례로 발행 또는 개발 중에 있어 경영시스템 인증은 더욱 더 광범위해지면서 다방면화, 섹터화의 경향을 나타내고 있다. 제품 및 서비스 무역의 글로벌화, 조달 및 투자의 비 지역화, 공공 서비스에 대한 규제 철폐, 소비자 및 환경보호에 대한 공적인 요구, 테러리즘 전염병 자연적인 재앙에 대한 국제적인 연대 책임에 대한 필요성, 새로운 기술과 혁신의 전개 등이 경영 시스템 인증에 대한 요구를 증대시키고 있으며, 그 전제로서 세계적 규모로 제도의 신뢰성을 확보하는 구조의 확립 및 활동 결과의 신뢰가 보증되는 체제가 구축되어 있어야 한다. 이러한 신뢰를 바탕으로 한 제3자 인증제도는 세계경제의 원활한 발전에 중요한 과제가 되고 있다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2011.06a
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• pp.197-201
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• 2011

검찰과 경찰에서는 압수수색을 통해 조사를 수행하는데, 기업들은 압수수색 수사를 받기 전에 회계 DB 및 회계 관련 파일 삭제, 파손 및 은닉하는 등의 문제점을 발생시키고 있다. 2008년 삼성화재 비자금 조성 사건과, 2009년 교하 복합커뮤니티 센터의 입찰비리 사건 등 기업회계장부의 포렌식 기술적용방법 문제 등이 발생하고 있다. 본 논문에서는 포렌식 수사 도구인 EnCase, FinalData 등을 연구하고, 기업의 회계 서버에 대해 압수수색 준비와 압수 수색, 획득 증거 분석 등의 절차를 연구한다. 기업의 회계 서버 압수수색 후에 디스크에서 포렌식 증거분석에서 실시되는 증거물 원본 파일보관, 원본성이 입증된 사본생성, 삭제 파일 검사 및 복원, 삭제 내용 확인, 원본 파일과의 대조를 실험을 한다. 본 연구 결과는 포렌식 기술발전에 기여하게 될 것이다.

• Journal of the Korean Society of Propulsion Engineers
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• v.13 no.3
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• pp.1-8
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• 2009

This thesis has analyzed the effect of the surge happening in flight on the engine performance, especially on the PW4000 turbofan engine. It is to be judged that the flight surge can occur more often at the time of takeoff than it does en route due to the fact that the engine parameters are prone to fluctuate. EPR is judged to be the most highly sensitive parameter responding when surge occurs. Both Engine rpm and Wf decrease almost simultaneously just like an EPR. During the take-off rolling, N1 vibration is more sensitive than the N2 vibration. Consequently, the surge can be detected by EGT increase, while the other parameters (EPR, rpm, Wf, etc) decrease.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.26 no.4
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• pp.911-919
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• 2016

Compared to the past, the current disk storages have dramatically increased and extremely many data are transferred on the network everyday. In spite of the anticipation that such development will be continued, there have been lack of studies for improving the data-imaging time in terms of the digital forensics. In this paper, we firstly investigate the time due to hash functions during the data Imaging and secondly propose a method for improving the efficiency of the EWF-File imaging time from a cryptographic perspective.

• 한국HCI학회:학술대회논문집
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• 2009.02a
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• pp.263-266
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• 2009

Comments are short and not use spacing words or comma more than general document. We convert the 7-gram into 3-gram and select key features using topic signature. Topic signature is widely used for selecting features in document classification and summarization. We use the SVM(Support Vector Machines) as a classifier. From the result of experiments, we can see that the proposed method is outstanding over the previous methods. The proposed system can also apply to other languages.

• Cartoon and Animation Studies
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• s.9
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• pp.143-160
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• 2005

This study was performed on purpose to consider the charade function of props in directing animation. The prop is gradually expanded its role and scope in modern animation. Its scope covers dramatic factors, creating and changing characters, the means of psychological description or emotional expression, mise-en-scene, montage, creating products etc. Like this, the prop has an important function emotionally or indispensably in human life. Thus, the prop should be a subject that can speak to audiences or viewers, not worthless and silent subject. Hence, the prop should be recognized as a charade having productional function. Nevertheless, the prop has been unnoticed up to now. The function of props should be valued hereafter. The prop itself is meaningless, but it always speaks to audiences on the screen.