• Title/Summary/Keyword: Background control data

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Historical Control Data for Developmental Toxicity Study in Sprague-Dawley Rats (Sprague-Dawley 랫드를 이용한 발생독성시험의 기초자료연구)

  • 김종춘;이상준;배진숙;박종일;김용범;정문구
    • Toxicological Research
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    • v.17 no.2
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    • pp.83-90
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    • 2001
  • The background control data were compiled from rat developmental toxicity studies con-ducted at Toxicology Research Center, KRICT during the 1993-1999 period. These data were assembled in order to provide background in formation for the maternal and fetal data collected in 13 developmental toxicity studies using Sprague-Dawley rats. A total of 325 mated females were used in these studies during the seven-year period and overall pregnancy rate of these females was 93.8%. The present background control data included body weights, food consumption, hematological values, and organ weights of pregnant females, caesarean section data, and fetal examination data. These data can be used not only as a historical database for the meaningful interpretation of data from reproductive and developmental toxicity studies, but also as a contribution to biological characterization oj Sprague-Dawley rats.

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Development of real time versatile software for automation of chemical processes (화학공정 자동화를 위한 실시간대 다기능 소프트웨어의 개발)

  • 서인식;김상우;남성우;백운화;엄태원;김원철;김태윤;김흥식;이광순
    • 제어로봇시스템학회:학술대회논문집
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    • 1988.10a
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    • pp.488-491
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    • 1988
  • In this work, we developed a real-time versatile advanced control and supervisory software for a personal computer control. This software, basically, has background and foreground tasks which are performed in parallel at real time. First, background tasks are composed of controls of various kinds, reports and input-ouput of signals etc, which are performed every sampling time. Second, foreground tasks are observation of operation conditions, data search, regulation of controllers and graphical design and display of processes, which are performed by users request. Additionally, this software has the functions of transporting data and composing distributed control systems, and all background tasks are composed of combination of unit function blocks.

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Background Data for Fertility and Early Embryonic Development Study in Sprague-Dawley Rats (Sprague-Dawley 랫드를 이용한 수태능 및 초기배 발생시험의 기초자료연구)

  • 김종춘;이상준;서정은;차신우;김충용;한정희;정문구
    • Toxicological Research
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    • v.18 no.2
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    • pp.167-174
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    • 2002
  • Historical control data have been shown to be valuable in the proper interpretation and validation of reproductive toxicology studies. The present data were compiled from rat fertility and early embryonic development studies conducted at Korea Institute of Toxicology during the 1994∼2001 period. These data were assembled in order to provide background information for the general and reproductive data collected in 11 fertility and early embryonic development studies using Sprague-Dawley rats obtain-ing from the Breeding Facility, Korea Institute of Toxicology, Korea. A total of 274 males and 274 females were used in these studies during the eight-year period. Parameters of fertility and early embryonic development included clinical sign, body weights, food consumption, organ weights, estrus cycle, copulation index, precoital time, fertility index, pregnancy index, sperm parameters, and early embryonic development parameters. Most of the values were comparable to the previous historical control data reported by other investigators. These data can be wed not only as a historical data base for the meaningful interpretation of data from reproductive and developmental toxicity studies, but also as a contribution to biological characterization of Sprague-Dawley rats.

A NEW CELL SIZING METHOD FOR AUTOMATIC UNSTRUCTURED GRID GENERATION USING CAD SURFACE DATA (CAD 형상 데이터를 이용한 비정렬 격자 자동 생성을 위한 격자셀 크기 지정 기법)

  • Lee, B.J.;Kim, B.S.
    • 한국전산유체공학회:학술대회논문집
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    • 2007.10a
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    • pp.120-125
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    • 2007
  • In this paper a new cell sizing method is proposed. The new method calculates cell size at a point using given size control elements directly without the aid of background grid as other cell sizing algorithms do. The calculation method and related definitions are described in detail, and typical cell sizing results are given.

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A Study on the Propensity of Conspicuous Consumption and the Development for Consumer Education Programs for Middle School Students (중학생의 과시소비성향과 소비자교육 프로그램 개발에 관한 연구)

  • Ham, Hyeon-Jeong;You, Doo-Ryon
    • Korean Journal of Human Ecology
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    • v.13 no.4
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    • pp.581-598
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    • 2004
  • The purpose of this study is to analyze the conspicuous consumption propensity of middle schoolers and to develop effective consumer education programs which help improve consumer socialization. Empirical data were collected by using a questionnaire for 500 middle schoolers who reside in the city of Daegu. The results of this study are as follows: First, significant differences in materialistic propensity can be found. It results from the difference in parents' educational background, amount of monthly pocket money, influence of mass media and friends, and the consumer education hosted by schools. Second, significant differences in the conspicuous consumption propensity can be found. It comes from the difference in materialistic propensity and control of purchasing behaviors. Third, the variables affecting the middle schoolers' propensity of conspicuous consumption include influence of mass media and friends, control of purchasing behaviors, influence of materialistic propensity, amount of monthly pocket money, and mother's educational background. Lastly, this study helps develop consumer education programs for the teenagers. The program should use statistics data, Internet, presentation materials, putting higher priority on experience activities, survey, analysis, discussion, and presentation rather than theoretical education.

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A Study on Maternal Verbal Control Pattens and Children's Recognition against those (어머니의 언어통제유형과 그에 대한 아동의 인지 연구)

  • 이희자
    • Journal of the Korean Home Economics Association
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    • v.30 no.4
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    • pp.231-247
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    • 1992
  • A Study on Maternal Verbal Control Patterns and Children's Recognition against those. The primary objective of the material presented in this dissertation is the analysis of the maternal verbal control patterns. The major focus is given to the differences between maternal verbal control patterns and children's recognition against those. The purspoe of this study were; 1) to investigate the maternal verbal control patterns recognized by children according to their family and personal surroundings; 2) to investigate the verbal control patterns in mother's response according to the differences of family and personal surroundings; 3) to find the differences between children's recognition and maternal verbal control patterns; 4) How the maternal verbal control patterns recognized by children are? The materials of this study were 81(37; boys, 44; girl)) from kindergarten in Seou. The sample of age used in this study was 5 to 7 years old. The test about maternal verbal environment used the question sheet for reaction between mother and children by Gumperz. The kids got interviews with same questions as mothers with question sheet. The statistical tools used is the analysis of the data were frequency, crosstab, and t-test. The result of the study were summarized as follows; 1) The maternal verbal control patterns recognized by children had differences according to whether living with grand-parent or not. Living with grand-parent are more person-oriented than without grand-parent group. 2) The maternal verbal control patterns of mother response show the differences within mother's academic background, present situation of child, and parent's expection to child. The imperative verbal control pattern was more frequently used of low academic background who just fraduate the middle or high school. The personal verbal control pattern was more frequently used of high educational background's like university graduate or more educated group. 3) The differences between maternal verbal control patterns with children's recognition and with mother response is that mother responseis more person-oriented than children's. 4) The imperative verbal control pattern used command, verbal purnishment, and physical purnishment. the status-oriented verbal control pattern used univesal positional appeals and limited positional appeals. The person-oriented verbal control pattern used child-oriented cognitive affective appeals.

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Multi-Face Detection on static image using Principle Component Analysis

  • Choi, Hyun-Chul;Oh, Se-Young
    • 제어로봇시스템학회:학술대회논문집
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    • 2004.08a
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    • pp.185-189
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    • 2004
  • For face recognition system, a face detector which can find exact face region from complex image is needed. Many face detection algorithms have been developed under the assumption that background of the source image is quite simple . this means that face region occupy more than a quarter of the area of the source image or the background is one-colored. Color-based face detection is fast but can't be applicable to the images of which the background color is similar to face color. And the algorithm using neural network needs so many non-face data for training and doesn't guarantee general performance. In this paper, A multi-scale, multi-face detection algorithm using PCA is suggested. This algorithm can find most multi-scaled faces contained in static images with small number of training data in reasonable time.

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A comparative study of Locus of Control in children and Their parents (학령기 아동과 부모의 통제소재 비교)

  • 이희자;권영옥
    • Journal of Families and Better Life
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    • v.10 no.2
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    • pp.75-85
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    • 1992
  • The purpose of the present study was to examine the relationship between children's locus of control and their parents. In addition, this study investigated socio-demographic variables of locus of control in children and their patents. The subjects of this study were 269 elementary school children in the 5th and 6th grade and their parents. To assess children's locus of control, the inter -external locus of control scale developed by H.K. Lee(1980) was used. The locus of control scale designed by J. W. Jo(1989) was administered to parents. The data of the study were analysed with t-test, one was ANOVA and Scheffe's test. Also, Pearson's correlation coefficient was computed. The results of this study were as follows. 1)There were significant differences in children's locus of control according to the children's sex, parent's educational background and family income. Boys were more internal than girls. Children with parent who had higher educational backgrounds were more internal than others. Also, children in higher family income were more internal those in lower educational background and family income. Also parents with religion were more internal than those without religion. 3)children's locus of control was significantly correlated with their parents . Paternal locus of control was significantly correlated with their daughter's and maternal locus of control with their sons'.

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A Study on Parenting Efficacy and Parenting as a Teacher of the Volunteer in the Kindergarten (유치원 학부모 자원봉사자의 양육효능감과 교사로서 역할수행에 관한 연구)

  • Lee, Sae-Na
    • Korean Journal of Human Ecology
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    • v.17 no.3
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    • pp.377-387
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    • 2008
  • The study is to research their parenting efficacy and parenting practices of a parent teacher as a volunteer(PTV) in the kindergarten. The subjects were mothers (N=127) in Choongbuk Province who had had volunteer education as a teacher assistant. The data were collected by their completing a questionnaire about Parenting efficacy and a Parent As A Teacher inventory (PAAT). The results include as follows: firstly, in PTV's parenting efficacy, 'the type of educational institution children are attending' is an important variable. Secondly, 'mother's educational background', 'father's educational background', and 'the type of educational institution children attending' are important variables in volunteer parents' parenting practices. Besides, 'mother's educational background' and 'participation motivation in volunteer activity' are important variables in parenting practices of 'control/permission' and of 'teaching/learning', and in general parenting practices. Finally, 'parenting efficacy', 'mother's educational background', and 'the sex of children' are important variables in volunteer teachers' parenting practices.