• 한국측량학회지
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• 제13권2호
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• pp.117-124
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• 1995

본 연구는 GPS위성측량의 기준좌표계로 채택된 세계측지계(WGS-84)와 현재 우리나라에서 사용되고 있는 베셀타원체에 근거한 측지계와 좌표변환을 위하여 Bursa-Wolf모델, Molodensky-Badekas모델과 Veis모델의 3가지 7-매개변수 좌표변환 방법을 수행하고 좌표변환 정밀도를 비교하였다. 본 연구의 결과, 우리나라에서는 Bursa-Wolf 모델이 7-매개변수 결정모델로 적합하다는 것을 알 수 있었다.

• ETRI Journal
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• 제34권6호
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• pp.847-857
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• 2012

Intrusion detection systems (IDSs) have an important effect on system defense and security. Recently, most IDS methods have used transformed features, selected features, or original features. Both feature transformation and feature selection have their advantages. Neighborhood component analysis feature transformation and genetic feature selection (NCAGAFS) is proposed in this research. NCAGAFS is based on soft computing and data mining and uses the advantages of both transformation and selection. This method transforms features via neighborhood component analysis and chooses the best features with a classifier based on a genetic feature selection method. This novel approach is verified using the KDD Cup99 dataset, demonstrating higher performances than other well-known methods under various classifiers have demonstrated.

• 한국유통학회지:유통연구
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• 제1권2호
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• pp.115-140
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• 1996

This study analyses the Chinese and the Russian distribution systems comparatively focusing on the economic system. Before the economic transformation both nations were socialistic planned economy. After the economic transformation China is under the socialistic market economy, and Russia under the capitalistic market economy. The purpose of this study is to see how the distribution systems of both nations were changed according to the transformation of economic system. It analyses the relationship between nationalized manufacturing companies and distribution companies, and the national planned distribution of products before the economic transformation of both nations. It examines the privatization of distribution-related companies and the structurally exclusive supply of manufacturing companies in distribution system in Russia after the economic transformation. It also investigates the institutionalized control of nationalized manufaturing companies over distribution companies, and the national intervention of product pricing in China.

• 전자공학회논문지 IE
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• 제43권3호
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• pp.28-33
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• 2006

본 논문에서는 선형 시변 시스템에 대하여 입출력 변환을 적용하여 선형 시불변 시스템을 얻기 위한, 입출력 변환의 필요충분조건을 제시한다. 변환된 시스템은 다중 적분기를 갖는 시스템으로 표현되며, 예제를 통하여 제안된 알고리즘을 확인하고, 검토하였다.

• 제어로봇시스템학회논문지
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• 제15권5호
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• pp.465-472
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• 2009

This paper proposes a multimodal information transformation system that converts the image information to the voice information to provide the sight impaired people with walking area and obstacles, which are extracted by an acquired image from a single CCD camera. Using a chain-code line detection algorithm, the walking area is found from the vanishing point and boundary of a sidewalk on the edge image. And obstacles are detected by Gabor filter of extracting vertical lines on the walking area. The proposed system expresses the voice information of pre-defined sentences, consisting of template words which mean walking area and obstacles. The multi-modal information transformation system serves the useful voice information to the sight impaired that intend to reach their destination. The experiments of the proposed algorithm has been implemented on the indoor and outdoor environments, and verified its superiority to exactly provide walking parameters sentences.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2000년도 춘계학술발표대회
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• pp.215-218
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• 2000

A. oryzae에 있어서 protoplast를 이용한 형질전환이 아닌 세포벽이 부분적으로 분해된 cell을 이용하여 electroporation으로 형질전환시켰고, novozyme234, hemicellulase와 celluclast를 사용하여 형질전환 효율이 어떻게 다른지를 비교 분석 하였다. Hemicellulase를 $^{\sim}10^8$ cell에 처리하여 A. oryzae에서 83 transformants/10ug of DNA를 얻었고, novozyme234와 celluclast를 사용하였을 때는 4.3 transformants/10ug of DNA를 얻었다.

• 안보군사학연구
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• 통권4호
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• pp.381-418
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• 2006

In present, advanced countries in the world are seen concentring on Military Transformation to create new military capability as there is a shift in Warfare Paradigm. Rapid development of technology enables military system, operational concept and organization innovated. As a result, Revolution in Military Affairs(RMA) that dramatically increased warfighting capability is pursued. Especially, advanced information technology constructs system of systems with abilities of battle visualization, information sharing in battlefield, long-range strike capability that are interoperable and combined. Corresponding to this, engagement methods and organizations are being progressively developed. The purpose of this thesis is overview of newly developing Warfare Paradigm and analysis of tendency of Military Transformation that advanced countries are pursuing preparation to this. Above all, specific aspects and contents of the Warfare Paradigm which emerged by information age were summarized. Subsequently, Military Transformation which provides the basic concepts and principles to the advanced countries in the world for the creation of new military capability was discussed. In conclusion, the tendency of Military Transformation by U.S.A, Japan, China, and Russia surround the Korean peninsular as the major power in military was carefully observed.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2003년도 하계종합학술대회 논문집 I
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• pp.430-433
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• 2003

In this paper, we propose the method of voice packet transformation for the improvement of voice quality in embedded VoIP system terminals. For this purpose, it was analyzed about the RTP header in the voice packet receiving side and designed about the handling method of voice packets by using jitter buffer. Through this analyzed and designed results, by implementing the voice packet transformation method and testing on the self-product VoIP system, we reached that a conclusion is satisfied with performance of VoIP services.

• Journal of Microbiology and Biotechnology
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• 제20권6호
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• pp.1022-1026
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• 2010

The different cleavage patterns of pYBamy59 plasmid isolated from E. coli $DH5{\alpha}$ and B. longum MG1 by the cell extract of B. longum MG1 suggested that the main reason for its low transformation efficiency was related to the restriction modification (R-M) system. To confirm the correlation between the R-M system and transformation efficiency, in vitro methylation and site-directed mutagenesis were performed in pYBamy59. Sequence analysis of pYBamy59 fragments digested by the cell extract of B. longum MG1 revealed that all fragments were generated by restriction of the sequence recognized by SacII endonuclease. When pYBamy59 from E. coli was methylated in vitro by CpG or GpC methyltransferase, it was protected from SacII digestion. Site-directed mutagenesis, which removed SacII sites from pYBamy59, or in vitro methylation of pYBamy59 showed 8- to 15-fold increases in the transformation efficiency over intact pYBamy59. Modification of the SacII-related R-M system in B. longum MG1 and in vitro methylation in pYBamy 59 can improve the transformation efficiency in this strain. The results showed that the R-M system is a factor to limit introduction of exogenous DNA, and in vitro modification is a convenient method to overcome the barrier of the R-M system for transformation.

• 지적과 국토정보
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• 제44권2호
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• pp.139-153
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• 2014

지적공부의 세계측지계 변환은 토지소유자의 재산권 보호와 직접적인 관련이 있기 때문에 좌표변환에 따른 공부상의 경계와 면적변화를 최소화할 수 있도록 해야 한다. 하지만 일반적으로 수학적인 변환식을 이용한 좌표변환은 지적도면의 형상을 변환 전 후에 정확하게 유지하기는 매우 어렵다. 현재 지적재조사 사업의 좌표변환 모델은 Helmert 변환방식에 의한 4개 변수를 이용하고 있으며 이중 축척계수는 동일 필지내에 경계점 간 상대적인 위치의 변화와 면적변동에 가장 민감한 영향을 미친다. 본 연구에서는 경계점 좌표등록지역 지적공부의 세계측지계 좌표변환 시 토지소유권과 관련이 있는 경계점에 대한 오차를 공차 범위 내에 유지시키면서 면적의 변화가 없도록 축척계수를 고정할 수 있도록 Helmert 변환식을 응용한 3변수변환 방법을 제시하였다.