• 제목/요약/키워드: pattern and correspondence

검색결과 91건 처리시간 0.024초

한국기업의 환경법규위반패턴에 관한 연구 : 대응분석을 이용한 실증적 분석 (Study on the Pattern of Environmental Regulation Violation of the Korean Firms : positive analysis using the correspondence analysis)

  • 최용석;강상목
    • 한국환경과학회지
    • /
    • 제3권4호
    • /
    • pp.445-450
    • /
    • 1994
  • The environmental regulation violation of the Korean firms is causing severe environmental pollution lately. Nevertheless, there are few studies on the firm's pattern of environmental regulation violation. In this paper, for the pattern of environmental regulation violation of the Korean firms, we give a type of statistical data analysis using the correspondence analysis. Therefore, with more effective control and inspection based on this, we have an effective and enforceable system decreasing the violative firms.

  • PDF

'규칙과 대응'에 대한 2007 개정 및 2009 개정 초등학교 수학 교과서 분석 (An Analysis of 'Patterns and Correspondence' in the Elementary Mathematics Textbooks Aligned to the 2007 and 2009 Revised Curriculum)

  • 방정숙;선우진;김은경
    • 대한수학교육학회지:학교수학
    • /
    • 제19권1호
    • /
    • pp.117-135
    • /
    • 2017
  • 초등학교 수학에서 '규칙과 대응'은 함수 개념에 대한 기초적인 토대를 마련할 수 있다는 측면에서 중요하지만, 관련 연구는 많지 않다. 이에 본 연구에서는 선행 연구를 분석하여 규칙과 대응을 지도하기 위한 핵심 교수 학습 요소를 도출하였으며, 이를 바탕으로 2007 개정 수학 교과서 및 2009 개정 수학 교과서에 제시된 규칙과 대응 관련 단원을 분석하였다. 구체적으로 실생활 맥락의 반영, 다양한 유형의 패턴 과제 활용, 두 양 사이의 대응 관계 탐구, 변수를 사용한 관계 표현에서의 의미 지도 측면에서 규칙과 대응 관련 단원을 비교 분석하였다. 분석 결과, 실생활 맥락의 반영은 두 교과서에 대체로 잘 구현되어 있었으며, 다양한 유형의 패턴 과제 활용과 두 양 사이의 대응 관계 탐구는 부분적으로 구현된 편이었다. 한편 변수를 사용한 관계 표현에서의 의미 지도는 두 교과서에서 공통적으로 잘 구현되지 않았다. 이러한 결과를 바탕으로 규칙과 대응을 지도하는 방안 및 차기 교과서 개발 방향에 관한 시사점을 논의하였다.

Correspondence Analysis of Two-way Contingency Tables with Ordered Column Categories

  • Yang, Kyung-Sook;Huh, Myung-Hoe
    • Journal of the Korean Statistical Society
    • /
    • 제28권3호
    • /
    • pp.347-358
    • /
    • 1999
  • Correspondence analysis is an exploratory method for two-way contingency tables intended to display the association pattern between row and column categories. It has been developed for several decades mainly in France and Japan and, nowadays, is popular worldwide. For the special case, however, that the column consists of ordered categories, correspondence analysis may yield ackward result so that it cannot be fully accommodated. That's because the row and column categories are assumed to be nominal in the ordinary correspondence analysis. The aim of this study is to develop the correspondence analysis for two-way contingency tables with ordered column categories. It is based on two specific algorithms,

  • PDF

자녀의 성장과정에 따른 주공간 사용 변화에 관한 연구-가족형태 변화와 주공간의 대응관계를 중심으로- (A Study on the Change of the dwelling Space according to the Growth of Children -Focused on the Correspondence of the Family Life Cycle to dwelling Space-)

  • 박현아;박용환
    • 한국주거학회논문집
    • /
    • 제12권4호
    • /
    • pp.43-52
    • /
    • 2001
  • The purpose of this study is to fined out the characteristics of using & change of the residential space according to the children age and family life cycle. The results of this study are as follows: The first, as children grow up, children's activity space changed from living room to the private room, and housing condition was related to the frequency of each activity. The second, as children grow up, family's sleeping pattern changed, and this change effected the number of private rooms for sleeping and the use of the extra room. The third, changes of the using of dwelling space come out several pattern, increasing bedroom number through reconstruction, exchange of An-band and children room, parents' sleeping space move to living room, and change the function of rooms. The change pattern of the correspondence to the housing needs differed from each family life cycle stage.

  • PDF

The Exploratory Analysis for Spam Mail Data Using Correspondence Analysis

  • Shin, Yang-Kyu
    • Journal of the Korean Data and Information Science Society
    • /
    • 제16권4호
    • /
    • pp.735-744
    • /
    • 2005
  • The number of electronic mail(E-mail) has been increased dramatically as a result of expanding internet and information technology. Although there are many conveniences of E-mail in the bright side, some serious problems occur because of E-mail in its dark side. One of the problems is spam-mail which is unsolicited mail and also called bulk mail. This paper presents a set of patterns of spam-mail occurrences within a week using the correspondence analysis. The correspondence analysis is an exploratory multivariate technique that converts data into a particular type of graphical display in which the rows and columns are depicted as points. One of the meaningful patterns is a great increment of adult and phishing related spam-mails at weekends so any spam-mail filters should be designed to cope with this pattern.

  • PDF

인공신경망을 이용한 삼차원 물체의 인식과 정확한 자세계산 (3D Object Recognition and Accurate Pose Calculation Using a Neural Network)

  • 박강
    • 대한기계학회논문집A
    • /
    • 제23권11호
    • /
    • pp.1929-1939
    • /
    • 1999
  • This paper presents a neural network approach, which was named PRONET, to 3D object recognition and pose calculation. 3D objects are represented using a set of centroidal profile patterns that describe the boundary of the 2D views taken from evenly distributed view points. PRONET consists of the training stage and the execution stage. In the training stage, a three-layer feed-forward neural network is trained with the centroidal profile patterns using an error back-propagation method. In the execution stage, by matching a centroidal profile pattern of the given image with the best fitting centroidal profile pattern using the neural network, the identity and approximate orientation of the real object, such as a workpiece in arbitrary pose, are obtained. In the matching procedure, line-to-line correspondence between image features and 3D CAD features are also obtained. An iterative model posing method then calculates the more exact pose of the object based on initial orientation and correspondence.

단일 투사 절대 코드 패턴을 이용한 3차원 얼굴 데이터의 유클리디안 복원 (A Euclidean Reconstruction of 3D Face Data Using a One-Shot Absolutely Coded Pattern)

  • 김병우;유선진;이상윤
    • 대한전자공학회논문지SP
    • /
    • 제42권6호
    • /
    • pp.133-140
    • /
    • 2005
  • 본 논문에서는 3차원 얼굴 인식기에서의 입력 데이터로 적합한 얼굴 데이터의 유클리디안 복원 시스템을 제안한다. 카메라 영상을 통한 유클리디안 복원을 위해서는 카메라의 보정정보와 복원할 특징 점의 대응 쌍 정보가 필요한데, 보정정보는 시스템의 변경이 없다면 불변한다. 따라서 고속의 유클리디안 복원을 위해서는 스테레오 영상간의 대응 쌍 정보 획득이 가장 중요하다. 시스템은 두 개의 카메라와 프로젝터 한 대로 구성하며, 피사체에 패턴을 투사하고 두 개의 카메라로부터 영상을 획득함으로써 동작한다. 사용 패턴은 단일 투사 줄무늬 패턴을 사용하며 줄무늬의 색도 정보와 채도 정보를 이용하여 '절대 코드 패턴'을 생성한다. 사용 시스템은 두 개의 카메라를 사용하기 때문에 색도 정보와 채도 정보가 비슷한 두 개의 영상을 얻을 수 있으며 이것은 획득한 두 개의 영상에 있는 줄무늬들에 대해 동일한 절대 라벨을 얻을 수 있게 한다. 절대 라벨링 된 줄무늬는 에피폴라 라인(epipolar line)상의 점들과 일대일 정합을 통해 고속의 3차원 데이터 복원을 가능하게 한다. 제안 방식은 얼굴 데이터에 적용되었으며 정확도와 총 소요 시간의 측정을 통해 제안 방식이 기존 방식에 비해 정확도 면에서 뒤지지 않으면서도 복원 속도 면에서 장점을 가짐을 확인할 수 있었다.

스테레오 비젼에서 대응문제 해결을 위한 알고리즘의 개발 (Development of an algorithm for solving correspondence problem in stereo vision)

  • 임혁진;권대갑
    • 한국정밀공학회지
    • /
    • 제10권1호
    • /
    • pp.77-88
    • /
    • 1993
  • In this paper, we propose a stereo vision system to solve correspondence problem with large disparity and sudden change in environment which result from small distance between camera and working objects. First of all, a specific feature is divided by predfined elementary feature. And then these are combined to obtain coded data for solving correspondence problem. We use Neural Network to extract elementary features from specific feature and to have adaptability to noise and some change of the shape. Fourier transformation and Log-polar mapping are used for obtaining appropriate Neural Network input data which has a shift, scale, and rotation invariability. Finally, we use associative memory to obtain coded data of the specific feature from the combination of elementary features. In spite of specific feature with some variation in shapes, we could obtain satisfactory 3-dimensional data from corresponded codes.

  • PDF

Pattern recognition as a consistent labeling problem

  • Ishikawa, Seiji;Kurokawa, Kiyoshi;Kojima, Ken-Ichi;Kato, Kiyoshi
    • 제어로봇시스템학회:학술대회논문집
    • /
    • 제어로봇시스템학회 1989년도 한국자동제어학술회의논문집; Seoul, Korea; 27-28 Oct. 1989
    • /
    • pp.999-1004
    • /
    • 1989
  • This paper discusses a new method of recognizing patterns employing consistent labeling. A consistent labeling problem is a generalized expression of constraint satisfaction problems. When a pattern is recognized by pattern matching, the matching between a reference pattern and an acquired pattern resolves itself into finding correspondence between the pixels on the former and those on the latter. This can be expressed as a consistent labeling problem. Pattern association, a variation of pattern recognition, is also described employing consistent labeling. The proposed technique is supported by experimental results, yet further studies need to be done before its practical use.

  • PDF

시설원예의 입지유형 분석 (Analysis of Location Patterns for Protected Horticulture)

  • 황한철;이남호;전우정;남상운;홍성구
    • 한국농공학회지
    • /
    • 제40권2호
    • /
    • pp.92-101
    • /
    • 1998
  • Location patterns of protected horticulture were analyzed using a multiple correspondence analysis(MCA). The analysis could be used in evaluating location suitability of protected horticulture. The location factors of the protected horticulture for MCA include land category, size of protected horticulture, land slope, topography, effictive soil depth, irrigation and drainage condition, distance from roads, and so forth. The results showed that there were three different location patterns of protected horticulture. The first pattern was characterized by their nearness to villages. The facilities of this pattern were mainly located near to residential area. The second pattern was of those found in plain area. The facilities of this pattern were large in scale and located in paddy field far from residential area. The facilities of the last pattern were small in scale and located on nonpaddy fields. They were mostly found in hilly or mountainous area.

  • PDF