• 제목/요약/키워드: materials recognition

검색결과 677건 처리시간 0.033초

다공질 압전소자로 제작한 초음파 센서의 물체변위에 무관한 3차원 수중 물체인식 특성 (Characteristics of 3-D Underwater Object Recognition Independent of Translation Using Ultrasonic Sensor Fabricated with Porous Piezoelectric Resonator)

  • 조현철;이기성;박정학;이수호;사공건
    • E2M - 전기 전자와 첨단 소재
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    • 제10권9호
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    • pp.916-921
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    • 1997
  • In this study Characteristics of 3-D underwater object recognition independent of translation using the self-made ultrasonic sensor fabricated with porous piezoelectric resonator and presented. The sensor was satisfied with requirement of ultrasonic sensor. The recognition rates for the training data and the testing data are 97.45 and 91.25[%] respectively using the self-made ultrasonic sensor and SCL(Simple Competitive Learning) neural network. According to the experimental results It is believed that the self-made ultrasonic sensor can be applied as sensor of SONAR system.

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한국전통음식의 계승·발전을 위한 초등학생의 인지도, 기호도와 개선 요구도 (Recognition, Preference and Improvement Requirement of Traditional Korean Food of Elementary School Students in Seoul)

  • 조우균;김미래
    • 한국식생활문화학회지
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    • 제34권4호
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    • pp.369-377
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    • 2019
  • This study focused the recognition and preference of Korean traditional food of elementary school students, in order to make effective educational materials about Korean traditional foods for the elementary school students. According to the responses of 356 elementary school students participating in this research, they understood the concept of traditional Korean food and recognized positively, but did not have much interest. However, the more they liked Korean food, the higher their interest in Korean traditional foods and the higher utilization rates of Korean traditional foods. Most elementary school students enjoyed Korean traditional food occasionally, especially soup, jjigae, tang and jeongol. Elementary school students suggested that complicated recipes should be improved for the succession of Korean traditional foods and that the class for cooking traditional foods in schools should be expanded.

Development of an Adaptive Neuro-Fuzzy Techniques based PD-Model for the Insulation Condition Monitoring and Diagnosis

  • Kim, Y.J.;Lim, J.S.;Park, D.H.;Cho, K.B.
    • E2M - 전기 전자와 첨단 소재
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    • 제11권11호
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    • pp.1-8
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    • 1998
  • This paper presents an arificial neuro-fuzzy technique based prtial discharge (PD) pattern classifier to power system application. This may require a complicated analysis method employ -ing an experts system due to very complex progressing discharge form under exter-nal stress. After referring briefly to the developments of artificical neural network based PD measurements, the paper outlines how the introduction of new emerging technology has resulted in the design of a number of PD diagnostic systems for practical applicaton of residual lifetime prediction. The appropriate PD data base structure and selection of learning data size of PD pattern based on fractal dimentsional and 3-D PD-normalization, extraction of relevant characteristic fea-ture of PD recognition are discussed. Some practical aspects encountered with unknown stress in the neuro-fuzzy techniques based real time PD recognition are also addressed.

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영양교사의 영양교육 직무 장애요인에 대한 현상학적 분석 (Phenomenological Analysis of Barrier Factors Affecting Nutrition Education Jobs of Nutrition Teachers)

  • 김지희;차진아
    • 대한영양사협회학술지
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    • 제23권2호
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    • pp.143-154
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    • 2017
  • The purpose of this study was to understand barrier factors affecting nutrition education jobs and determining priorities according to frequency of occurrence of obstacles. Focus group interview (FGI) was conducted on 11 nutrition teachers, and the result are summarized by the phenomenological analysis method. The barriers of nutrition education consisted of three categories, seven themes, and 10 sub-themes. The three categories were divided into work burden, recognition of nutrition education, and limitations of the nutrition education environment. Recognition of nutrition education was further divided into internal recognition from nutrition teachers and individual and external recognition from students and staff. The results showed that the most frequent barrier experienced by nutrition teachers in the work burden category was heavy work loads of foodservice management, followed by irrational working environment. In addition, limitations of the nutrition education environment consisted of absence of standard curriculum and textbooks, inadequate education infrastructure, and inadequate class time. To improve this, it is necessary to reduce nutrition teacher's food service management and develop standard curriculum and educational materials for nutrition education.

Research on Recognition of Graphic Symbols in Amusement Park: A Case Study of Taiwan's Theme Amusement Park

  • Hsu, Yao-Wen;Chung, Yi-Chan;Chen, Ching-Piao;Tsai, Chih-Hung
    • International Journal of Quality Innovation
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    • 제9권2호
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    • pp.79-89
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    • 2008
  • Each amusement park has a wayfinding system, while symbols are important mediums to guide tourists to find their destinations. It is very important that whether the meanings of symbols recognized by tourists immediately. This paper mainly discusses the recognition of graphic symbols in amusement park, and proposes the improvement suggestions. Materials for this study were drawn from 20 different graphic symbols of a theme amusement park in Taiwan. The testees were required to evaluate the design of graphic symbols based on symbolic meaning and graphics recognition to summarize the confusion matrix. The results show that there are three groups of graphic symbols easy to be confused, and five symbols not meeting a criterion of 67% correct responses. The reasons were discussed, and improvement and relevant suggestions have been proposed, which may be helpful to redesign of symbols.

도시주부의 혼례행동 및 혼례만족에 관한 연구 - 결혼 5년 이내의 주부를 중심으로 - (A Study on the urban housewives wedding behavior and satisfaction - focus on the housewives who have been married for less than five years -)

  • 이정우;김명나
    • 가족자원경영과 정책
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    • 제1권2호
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    • pp.1-15
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    • 1997
  • The purpose of this study is to investigate (1)the level of the urban housewives’behavior and satisfaction of wedding, (2)the influential factors related to the two dependent variables above mentioned. So that provides some fundamental materials to improve the level of sound wedding culture and the whole home living. The subjects were 356 housewives, in April, 1997, Seoul. The data obtained were analyzed by Mean, Pearson’s correlation, Stepwise Multiple Regression and Path Analysis. The major findings were as follows: 1) The general tendency of the housewives’wedding behavior and satisfaction was reasonable. 2) According to the background variables(ie: marital form, the existence of job, the recognition degree of her husband’s family’s living standards, the recognition degree of her parents’home’s living standards, the perception of marital transactions), the housewives’wedding behavior was significantly different. 3) According to (1)the background variables(ie: communication frequency in household, self-acceptance, the adequacy of household income, educational level), (2)intermediated variable(ie: articles essential to a marriage), the housewives’wedding satisfaction was significantly different. 4) The indirect variable of the positive influence for housewives’satisfaction of wedding was marital form, the existence of job. the indirect variable of the negative influence for housewives’satisfaction of wedding was the recognition degree of her husband’s family’s living standards, the recognition degree of her parents’home’s living standards, the perception of marital transfactions.

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제7차 중학교 ‘환경’ 교육과정과 청소년 환경교육 (Middle School Environmental Education of the 7th National Curriculum and Application to Teen-agers Practice of Environmental Education)

  • 이민부;박승규
    • 한국환경교육학회지:환경교육
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    • 제11권2호
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    • pp.14-25
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    • 1998
  • The Quality of human living depends on the environmental quality of the region sustaining the life. The environmental deterioration of the modern society is due to mechanical environmentalism. For the better quality of the life, The changes of recognition and attitude on the environments are required. These changes of mind are also important in environmental education for teenagers. The 7th national curriculum, officially anounced December 1998, focuses on the change of attitude to environments and practical behavior in real life for “Environments”, the environmental education curriculum in middle school. Basic elements of the curriculum are cultivation of the pro-environmental thinking, multi-levelling of teaching materials and methods, and encouraging of student participating activity. Actually, the curriculum construction is composed of stepped-levelling of teaching and learning, reasonable contents volume, encouraging of student practice, and suggesting of evaluation standards of textbook writing. Three main subjects of environmental education for middle school consist of (1) man and environment, (2) recognition of environmental problem, and (3) protection activity for environment. Methodology of environmental education can include multi-disciplinary approaches, variable teaching methods, and continuing evaluation of student practice and participation attitude. Environmental education for teenagers relating to the 7th national curriculum focuses on recognition of the environmental problems and practice activity in daily life. The recognition includes considering relationship of human life to environment, solving environmental problems in regional context, and development of comprehensive understanding concept of the environments. For the practice education, variable teaching methods, such as field survey and application of multi-media, are needed.

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선박용 피도물 도료 사용량 절감을 위한 인식 및 스프레이 자동제어시스템 개발 (Development of Automatic Recognition and Spray Control System for Reducing the Amount of Marine Coating paint)

  • 정영득
    • 대한안전경영과학회지
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    • 제21권3호
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    • pp.23-27
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    • 2019
  • The first aim of the study is to improve the productivity by uniformizing the thickness of coating and reducing quality-inspection time. The second aim is to cut down on the raw materials for coating by prevent the waste of spraying in the air during a painting process through a real-time coating-size-recognition monitering to fit the target components. To achieve the two aims, a simplified version of automatic coating control system for recognition of coating for vessels and Spray. With the sytem, following effects are expected: First, quality improvement will be achieved by uniformizing the film-thickness. Second, it will reduce the waste of coating paint by constructing the speed of the coating, the spray gun robot transfer time, and the number of DBs according to the size of the vessel. Third, as a 3D industry, it will be able to solve the difficulty of supply of labors and save up the labor costs. Therefore, in the future, further research will be needed to be applied to various products with DB design that designates the variable value, which is added for each type of pieces by comparing the difference between various types of workpieces and linear ones.

2D 도면 인식을 통한 부재 물량 산출 자동화 기술 개발 (Development of Automation Technology for Structural Members Quantity Calculation through 2D Drawing Recognition)

  • 선우효빈;최고훈;허석재
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2022년도 봄 학술논문 발표대회
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    • pp.227-228
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    • 2022
  • In order to achieve the goal of cost management, which is one of the three major management goals of building production, this paper introduces an approximate cost estimating automation technology in the design stage as the importance of predicting construction costs increases. BIM is used for accurate estimating, and the quantity of structural members and finishing materials is calculated by creating a 3D model of the actual building. However, only 2D basic design drawings are provided when making an estimating. Therefore, for accurate quantity calculation, digitization of 2D drawings is required. Therefore, this research calculates the quantity of concrete structural members by calculating the area for the recognition area through 2D drawing recognition technology incorporating computer vision. It is judged that the development technology of this research can be used as an important decision-making tool when predicting the construction cost in the design stage. In addition, it is expected that 3D modeling automation and 3D structural analysis will be possible through the digitization of 2D drawings.

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Organic Photorefractive Composites for Optical Information Processing

  • Oh, Jin-Woo;Hwang, Ui-Jung;Choi, Chil-Sung;Kim, Nak-Joong
    • 한국고분자학회:학술대회논문집
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    • 한국고분자학회 2006년도 IUPAC International Symposium on Advanced Polymers for Emerging Technologies
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    • pp.164-164
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    • 2006
  • Polymeric photorefractive materials exhibit two attractive features, the large refractive index modulation (up to the order of $10^{-2}$) and the optical erasabilility of recorded holographic information. These advantages make the organic photorefractive materials to become candidates for optical data processing, e.g., pattern recognition and fingerprint verification. In this work, we demonstrate optically controlled SLMs using photorefractive composite. An incoherent image imposed in Xe-lamp light was converted into a coherent image.

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