• 제목/요약/키워드: Similarity determination

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2011 중학교 수학과 교육과정의 비판적 고찰: 기하 영역을 중심으로 (A critical review on middle school mathematics curriculum revised in 2011 focused on geometry)

  • 박교식;권석일
    • 대한수학교육학회지:수학교육학연구
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    • 제22권2호
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    • pp.261-275
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    • 2012
  • 2011 교육과정의 기하 영역에는 명료하지 않게 제시된 부분이 있다. 본 연구에서는 명료하지 않아 교육과정의 의도와 달리 잘못 해석될 가능성이 있는 기호 $\overline{AB}{\perp}\overline{CD}$, 간단한 작도와 합동인 도형의 성질, 삼각형의 결정조건, 회전체, 정당화, 닮음의 중심, 닮음의 위치, 삼각형의 중점 연결 정리, 피타고라스 정리, 원주각의 성질의 불명료성에 관해 논의하고 있다. 본 연구의 결과를 바탕으로 결론으로서, 차기 중학교 수학과 교육과정의 개발과 관련하여 다음 세 가지 논의 주제를 제공하고자 한다. 첫째는 교육과정에서의 불명료성 해소이다. 둘째는 공신력 있는 해설서의 발행이다. 셋째는 충분한 연구 결과의 축적을 바탕으로 한 교육과정 개발이다.

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얼굴 유사도 판별 기술을 이용한 미아 찾기 (Finding Missing Persons using Faces Similarity Determination Technology)

  • 이미희;지한별;이주연;임어진
    • 한국컴퓨터정보학회:학술대회논문집
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    • 한국컴퓨터정보학회 2016년도 제54차 하계학술대회논문집 24권2호
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    • pp.219-220
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    • 2016
  • 본 논문에서는 컴퓨터비전 기술 기반의 라이브러리를 이용해 미아 얼굴 정보를 중심으로 매칭을 하는 시스템으로서, 미아 데이터베이스에 등록된 얼굴과 유사한 미아를 정확도 순으로 배열해 주는 시스템을 개발한다. 이는 기존의 텍스트 정보 중심의 미아에 대한 정보 등록 및 조회를 하게 되었을 때 발생하는 정보의 부정확성 등의 문제점을 해결하고 편하고 빠르고 정확하게 정보 입력과 매칭을 함으로써 골든 타임 안에 미아를 찾을 수 있는 장점이 있다.

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Application of FFT to orientation determination

  • Woo, Dong-Min;Park, Mignon
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 1991년도 한국자동제어학술회의논문집(국제학술편); KOEX, Seoul; 22-24 Oct. 1991
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    • pp.1730-1733
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    • 1991
  • In this paper, we two dimensional processing method is presented, which can accurately determine the orientation of an part. Matching bewteen the object and the object contour is decomposed to estimate the orientation of the object and to evaluate the similarity new approach is very robust with respect to noise and no preprocessing of the contour is required. Also, this method has many advantages over the converntional correlation technique. With only a few uniformly sampled points, this method can estimate the accurate orientation in an efficient manner even in a noisy environment.

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Compound K 측정을 위한 ELISA법 개발 (Development of ELISA Method for the Determination of Compound K)

  • 류미나;이해광;성종환;성충기
    • 생약학회지
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    • 제46권4호
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    • pp.279-282
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    • 2015
  • In order to quantify compound K(CK), anticancer component of Panax ginseng C. A. Meyer, high titer rabbit polyclonal antibodies (pAbs) were raised against a conjugate of CK and bovine serum albumin coupled by a periodate oxidation method. Coating antigen (CK-OVA) was also prepared by the same method with OVA. As a result of optimization of antiserum dilution (2,000 fold), coating antigen ($25{\mu}g/ml$) and other condition (incubation time, temperature and washing method), ELISA method for the determination of CK was established. The measuring range extended from 0.5 ng/ml to 25 ng/ml of CK. The antibodies exhibited minor or even no cross reactivities with protopanaxatriol (1.56%) and other tested ginsenosides, $GRb_1$ (0.11%), $GRg_1$ (0.07%) except protopanaxadiol (87.2%) from the structural similarity. And the antibody showed good correlation (r=0.987) between the assay values obtained by this ELISA method and HPLC. Therefore, the ELISA method could be very useful tools for the determination of CK in biological fluids because of their high sensitivity and specificity.

섬광계를 이용한 비균질 도시 지표에서의 현열속 산정 (LAS-Derived Determination of Surface-Layer Sensible Heat Flux over a Heterogeneous Urban Area)

  • 이상현
    • 대기
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    • 제25권2호
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    • pp.193-203
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    • 2015
  • A large aperture scintillometer (LAS) was deployed with an optical path length of 2.1 km to estimate turbulent sensible heat flux (${\mathcal{Q}}_H$) over a highly heterogeneous urban area. Scintillation measurements were conducted during cold season in November and December 2013, and the daytime data of 14 days were used in the analysis after quality control processes. The LAS-derived ${\mathcal{Q}}_H$ show reasonable temporal variation ranging $20{\sim}160W\;m^{-2}$ in unstable atmospheric conditions, and well compare with the measured net radiation. The LAS footprint analysis suggests that ${\mathcal{Q}}_H$ can be relatively high when the newly built-up urban area has high source contribution of the turbulent flux in the study area ('northwesterly winds'). Sensitivity tests show that the LAS-derived ${\mathcal{Q}}_H$ are highly sensitive to non-dimensional similarity function for temperature structure function parameter, but relatively less sensitive to surface aerodynamic parameters and meteorological variables (temperature and wind speed). A lower Bowen ratio also has a significant influence on the flux estimation. Overall uncertainty of the estimated daytime ${\mathcal{Q}}_H$ is expected within about 20% at an upper limit for the analysis data. It is also found that stable atmospheric conditions can be poorly determined when the scintillometry technique is applied over the highly heterogeneous urban area.

Identification of Species and Sex of Korean Roe Deer (Capreolus pygargus tianschanicus) Using SRY and CYTB Genes

  • Han, Sang-Hyun;Cho, In-Cheol;Lee, Sung-Soo;Tandang, Leoncia;Lee, Hang;Oh, Hong-Shik;Kim, Byoung-Soo;Oh, Moon-You
    • Animal cells and systems
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    • 제11권2호
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    • pp.165-168
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    • 2007
  • The nucleotide sequences of a male-specific marker sex determining region Y (SRY) gene and a mitochondrial cytochrome B (CYTB) gene were characterized and analyzed to establish a molecular method for identification of species and sex of Korean roe deer (Capreolus pygargus tianschanicus). Similarity search result of SRY sequences showed very similar result to those reported in Moose (Alces alces) and Reindeer (Rangifer tarandus), both of which had 95.9% similarity in identity. CYTB genes were very similar to those reported in Siberian roe deer (C. pygargus pygargus) which had 98.6% similarity and not to European roe deer (C. capreolus), suggesting that the DNA samples tested were of Siberian roe deer lineage. Polymerase chain reaction (PCR)-based sex typing successfully discriminated between carcasses of male and female roe deer. Males had SRY band on agarose gels and females did not. The result of this molecular sex typing provided similar information with that obtained by genital organ observation. Therefore, this molecular method using male specific marker SRY and mitochondrial CYTB genes would be very useful for identification of the species and sex of the carcass remains of roe deer.

Computational Approaches for Structural and Functional Genomics

  • Brenner, Steven-E.
    • 한국생물정보학회:학술대회논문집
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    • 한국생물정보시스템생물학회 2000년도 International Symposium on Bioinformatics
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    • pp.17-20
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    • 2000
  • Structural genomics aims to provide a good experimental structure or computational model of every tractable protein in a complete genome. Underlying this goal is the immense value of protein structure, especially in permitting recognition of distant evolutionary relationships for proteins whose sequence analysis has failed to find any significant homolog. A considerable fraction of the genes in all sequenced genomes have no known function, and structure determination provides a direct means of revealing homology that may be used to infer their putative molecular function. The solved structures will be similarly useful for elucidating the biochemical or biophysical role of proteins that have been previously ascribed only phenotypic functions. More generally, knowledge of an increasingly complete repertoire of protein structures will aid structure prediction methods, improve understanding of protein structure, and ultimately lend insight into molecular interactions and pathways. We use computational methods to select families whose structures cannot be predicted and which are likely to be amenable to experimental characterization. Methods to be employed included modern sequence analysis and clustering algorithms. A critical component is consultation of the presage database for structural genomics, which records the community's experimental work underway and computational predictions. The protein families are ranked according to several criteria including taxonomic diversity and known functional information. Individual proteins, often homologs from hyperthermophiles, are selected from these families as targets for structure determination. The solved structures are examined for structural similarity to other proteins of known structure. Homologous proteins in sequence databases are computationally modeled, to provide a resource of protein structure models complementing the experimentally solved protein structures.

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Improved Acoustic Modeling Based on Selective Data-driven PMC

  • Kim, Woo-Il;Kang, Sun-Mee;Ko, Han-Seok
    • 음성과학
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    • 제9권1호
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    • pp.39-47
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    • 2002
  • This paper proposes an effective method to remedy the acoustic modeling problem inherent in the usual log-normal Parallel Model Composition intended for achieving robust speech recognition. In particular, the Gaussian kernels under the prescribed log-normal PMC cannot sufficiently express the corrupted speech distributions. The proposed scheme corrects this deficiency by judiciously selecting the 'fairly' corrupted component and by re-estimating it as a mixture of two distributions using data-driven PMC. As a result, some components become merged while equal number of components split. The determination for splitting or merging is achieved by means of measuring the similarity of the corrupted speech model to those of the clean model and the noise model. The experimental results indicate that the suggested algorithm is effective in representing the corrupted speech distributions and attains consistent improvement over various SNR and noise cases.

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경사도 결정을 위한 새로운 인식방법 (A New Recognition Scheme for Orientation Determination)

  • 우동민;백남칠;김영일;최호현
    • 대한전자공학회논문지
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    • 제25권8호
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    • pp.983-991
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    • 1988
  • In this paper, a new two dimensional processing method is presented, which determines the identity, position and orientation of a part. Matching between the object and model is performed in the frequency domain. The DFT of the object contour is decomposed to estimated the orientation of the object and to evaluate the similarity between the object and model. In this context, this new approach is very rbust with respect to noise and no preprocessing of the contour is required. Also, this method has many advantages over the conventional correlation technique. With only a few uniformly sampled points, this method can estimate the accurate orientation in an efficient manner even in a noisy environment.

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확장형 에지 선소를 이용한 스테레오 정합 (Stereo Matching using the Extended Edge Segments)

  • 손홍락;김형석
    • 대한전기학회논문지:시스템및제어부문D
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    • 제51권8호
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    • pp.335-343
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    • 2002
  • A segment matching algorithm in stereo vision via the fusion of multiple features on long edge segments is proposed. One problem of the previous segment matching algorithm is the similarity among the segments caused from its short length. In the proposed algorithm, edges are composed of longer segments which are obtained by breaking the edges only at the locations with distinguished changes of the shape. Such long segments can contain extra features such as curvature ratio and length of segments which could not be included in shorter ones. Use of such additional features enhances the matching accuracy significantly To fuse multiple features for matching, weighting value determination algorithm which is computed according to the degree of the contribution of each factor is proposed. The stereo matching simulations with the proposed algorithm are done about various images and their results are included.