• Title/Summary/Keyword: Duncan's Multiple Comparison

Search Result 70, Processing Time 0.026 seconds

Estimation of the Through Car Equivalent for Left-Turn Movement According to the Left-Turn Curve Radius in the Signalized Intersection (신호교차로에서 곡선반경에 따른 좌회전의 직진환산계수 산정)

  • 오영태;김기형
    • Journal of Korean Society of Transportation
    • /
    • v.19 no.2
    • /
    • pp.21-28
    • /
    • 2001
  • This study is to estimate the through car equivalent for left-turn movement according to left turn radius in the signalized intersection. The saturation flow rate for left-turn movement in 92' KHCM(Korea Highway Capacity Manual) is the same as that for through movement in the signalized intersection where the left turn radius is over 20m. This study uses Duncan 'Test's Test in order to find out the saturated position for queued vehicle in the signalized intersection. It found that the saturated flow rate of left-turn movement in the signalized intersection is less than that of through movement where the left-turn radius is less than 20m. It found that the through car equivalents for left-turn movement according to left-turn radius(8m-20m) are between 1.05 and 1.14.

  • PDF

Effect of Vacuum Levels on the Palatability Characteristics of Rice Packed in Retort Pouch (Retort Pouch 쌀밥의 포장(包裝) 진공도(眞空度)가 제품(製品)의 식미특성(食味特性)에 미치는 영향(影響))

  • Choi, Kwang-Soo
    • Journal of the Korean Society of Food Science and Nutrition
    • /
    • v.13 no.2
    • /
    • pp.205-208
    • /
    • 1984
  • In order to investigate the effect of vacuum levels in retort pouch on the eating-quality characteristics of the thermal processed packed rice, sensory evaluations were performed with retort pouched rice(Milyang-23) packed at the vacuum of 30 and 75 cm Hg in comparison with kettle cooked rice as a control. The mean hedonic scores of eating-quality characteristics were statistic-ally analyzed by using F-test, Duncan's multiple range test and simple correlations. F-values on appearance, stickiness, taste and general acceptability of rice samples were significant at 1 % level and that on flavor and hardness significant at 5% level respectively. The mean hedonic scores of appearance, flavor, taste and the general acceptability between retort pouched rice packed at the vacuum of 30 and 75 cm Hg were significantly different at the 55 level of probability according to Duncan's multiple range test. Those of stickiness among treatments were significantly different one another. Correlations between general acceptability and the other eating-quality characteristics of cooked-and packed-rice were significant with the exclusion of stickiness.

  • PDF

Effect of Secondary School Pre-service Teachers' Clothing Lifestyle on Attitude toward Teacher's Clothing (중등학교 예비교사의 의생활 라이프스타일이 교사의복에 대한 태도에 미치는 영향)

  • Lee, Eun Hee
    • Journal of Korean Home Economics Education Association
    • /
    • v.33 no.3
    • /
    • pp.129-142
    • /
    • 2021
  • The purpose of this study was to provide educational data on teaching clothing culture by examining the effects of clothing lifestyle on attitudes toward teachers' clothing for 270 secondary school pre-service teachers. For data analysis, factor analysis, Cronbach's α reliability coefficients, t-tests, one-way analysis of variance, Duncan's multiple comparison verification, and multiple regression analysis were performed using SPSS 24.0 program. As a result of the study, first, the clothing lifestyle of secondary school pre-service teachers was classified as fashion trend orientation, clothing importance orientation, attractive appearance orientation, and economic orientation factors. In addition, the attitude toward teacher's clothes was classified into activity, fashionability, and modesty factors. Second, there was a statistically significant difference in the attitudes toward clothing lifestyle and teacher clothing of secondary school pre-service teachers according to gender and year in college, which are demographic variables. Third, it was found that the clothing lifestyle of secondary school pre-service teachers, who are Generation Z, had an effect on the attitude toward teacher clothes. In conclusion, this study proposes that school administrators and teachers should depart from the former stereotypes about teacher clothes and to encourage a culture in which teachers can dress and perform their role of teaching according to individual's changing lifestyles.

Effects of Root Restriction by Clay Pot and Root Contrl Bag on Growth of Acer Palmatum (토분과 Root Control Bag에 의한 근권제한이 단풍나무의 생장에 미치는 영향)

  • 김동욱;김민수
    • Journal of the Korean Institute of Landscape Architecture
    • /
    • v.28 no.4
    • /
    • pp.1-8
    • /
    • 2000
  • This study is conducted to evaluate the effects of root restriction on growth of maple(Acer palmatum Thumb.). Tow types of container such as clay pot(CP), root control bag(RCB) were used to restrict maple's root and each type of container was divided into 5 sizes. The containers with plants were buried just below the soil level and maples planted directly in the soil (nonrestricted root treatment) were included as comparison. Data were collected on dry weight of leaf, trunk, thick root, rootlet and soil water potential. We have analyzed, simple linear regression, Pearson's Correlation analysis, Duncan's multiple rang test, and Covariance Analysis using SAS statistical software. The results of analysis based on these data are as follows; 1. Total dry weight of maple in CP was significantly larger than in RCB. 2. Difference in growth reduction by the kinds of containers was induced by different hydraulic diffusion ratios between container and soil. Difference in growth reduction by the size of container was induced by the difference density of rootlet and soil moisture contents in the container. 4. Commercial products of root control of root control bag appeared not proper for countries in which fluctuation of rainfall is severe. Because maples in RCB were restricted by excess soil water in the rainy season, or by lack of soil water in the dray season.

  • PDF

Comparison on Satisfaction and Intention to Revisit among Men's Beauty Service Markets (남성 세분시장별 이.미용서비스 만족도와 재방문 의도의 비교)

  • Jeon, Yang-Jin;Jeon, Ok-Joo
    • Journal of the Korean Society of Clothing and Textiles
    • /
    • v.32 no.2
    • /
    • pp.284-293
    • /
    • 2008
  • The purpose of this study was to identify men's beauty service markets based on socio-cultural appearance attitude and to compare their satisfaction and intention to revisit beauty service. The study was done by survey method. Data of three hundred men aged from 20's to 40's were collected by on-line survey. Descriptive analyses, factor analyses, cluster analyses, Duncan tests, multiple regressions, and path analyses were applied. The results are as follows: First, five factors were found for men's socio-cultural attitude for their appearance. They were high involvement in appearance, social appearance, appearance satisfaction, appearance comparison and low involvement in appearance. Second, cluster analysis based on socio-cultural attitude produced three customer groups such as high involvement, social concern & satisfaction, and low involvement. Third, customer groups showed significant differences in some demographics and some items of service dimensions, which resulted in significant differences in satisfaction, and intention to revisit beauty shop services. A high involvement group was composed of young and unmarried men with more frequent visit to beauty shop service. In general, both the high involvement and the social concern & satisfaction groups showed higher evaluations than the low concern group in some of service items, level of satisfaction, and intention to revisit. In conclusion, attitude on their appearance could be useful factors in segmenting men's beauty service market. Levels and types of beauty shop service should be differentiated among consumer markets.

An Evaluation of the Statistical Techniques Used in the 1995-2007 Editions of the Korea Institute of Oriental Medicine (한국한의학연구원 논문집에 사용된 통계기법의 평가)

  • Kang, Kyung-Won;Kang, Byung-Gab;Go, Mi-Mi;Shin, Sun-Hwa;Choi, Sun-Mi
    • Korean Journal of Oriental Medicine
    • /
    • v.13 no.2 s.20
    • /
    • pp.121-125
    • /
    • 2007
  • Background and Purpose : The purpose of this study was done to investigate what kinds of statistical techniques have been used to analyze data from oriental medicine research Methods : 135 original articles which used statistical techniques in their data analysis were selected from the articles published in The Journal of Korea Institute of Oriental Medicine(JKIOM) between 1995 to 2007. Results : Among 135 articles, 59 articles used descriptive statistics while 76 articles used inferential statistics for data analysis. For that 76 articles, two-sample t-test(33 articles), analysis of variance(29 articles), regression(9 articles), chi-square test(5 articles), nonparametic test(4 articles), Fisher's exact test(3 articles), and other test(9 articles) were chosen to analyze the data. SAS and SPSS statistical softwares(82.50%) were mostly used to analyze the data. Nonparametic tests were used to 4 articles(6.97%) of 67 articles and parametic tests were used to 63 articles(93.03%) of 67 articles. Among 29 articles used analysis of variance, duncan(8 articles), dunnet(4 articles), bonferroni(4 articles), turkey(3 articles), scheff(1 article) were used to do multiple comparison. 9 articles did not carry out the multiple comparison. Conclusions : It was found that the frequencies of statistical package used and statistical analysis used were not much by now. High level statistical analyses were not used most for oriental medicine research.

  • PDF

Analysis of the factors that influence Korean beverage consumption (전통음료 섭취에 영향을 주는 변인에 관한 분석연구)

  • 이현주;손경희;이민준
    • Korean journal of food and cookery science
    • /
    • v.18 no.1
    • /
    • pp.63-72
    • /
    • 2002
  • This study was conducted to (a) investigate the frequency of Korean beverage consumption, (b) analyze the characteristics of socio-demographically classified group according to drinking frequency, (c) investigate the attitude for and awareness of Korean beverage and (d) analyze the factors which influence Korean beverage consumption. The survey was carried out by self-administered questionnaires with 2,200 subjects residing in Seoul. A total of 1,885 samples were used for analysis by using t-test, one way analysis of variance (ANOVA), Duncan's multiple comparison test, factor analysis, and analysis of covariance (ANOCOVA) with SAS computer program. Among various Korean beverage, Donggulre tea was consumed most frequently at an average of 7.4 times per month, and followed by rice beverage, Mi Su, Citron tea, Shick Hae and canned Shick Hae. Among the age groups, the group of 20s showed the lowest frequency of Korean beverage consumption exempt rice beverage. According to occupation group, middle and high school and college student groups showed a high frequency of consumption of cereal based drink such as rice beverage, Mi Su and Yulmu tea. The behavior examination aimed at learning the perceptions relevant to the choice of beverage showed that the subjects believe Korean beverage healthful and nutritious but not familiar through advertisement, not easy to buy, and not to be a habitual drink. The factors influencing the frequency of Korean beverage consumption were shown as health-related factors and habitual/practical factors.

The Life Style of Urban Empolyed Wives and Pro-Environmental Behavior (도시 취업주부의 라이프스타일과 환경친화적 행동에 관한 연구)

  • Byun Soon-Hee;Kye Sun-Ja
    • Journal of the Korean Home Economics Association
    • /
    • v.42 no.9
    • /
    • pp.111-134
    • /
    • 2004
  • The purpose of this dissertation is firstly to examine the level of pro-environmental behavior of urban employed wives depending on their life style type and secondly to identify effective ways to promote their pro-environmental behavior. A structured questionnaire interview was conducted with 700 urban employed wives who lived in the Seoul Metropolitan area, and 566 of the responses were valid for analysis. For statistical analysis, this research reviewed the frequencies, percentage, mean, standard deviation(SD), Pearson's correlations, Cronbach's u, factor analysis, cluster analysis, ANOVA, $\chi$$^2$-test, Duncan's Multiple Range Test, and multiple regression using SPSS/PC WIN. The findings of analysis of the study are as follows: 1. Among life style types of employed wives, the order of ecological value was orientation type (37.3%), followed by economical value orientation type (25.8%), uninterested type (18.7%), and convenience-centric value orientation type (18.2%).Pro-environmental behavior scored relatively highly at 3.45 in average. 2. In the analysis of the relationship between life style and background variations, every variation except environmental knowledge was meaningful. 3. In the relationship between pro-environment behavior and background variations, every variation was meaningful except housing types, having helper or not, and environmental knowledge. 4. The recognition level of environmental pollution was important among the variations affecting pro-environmental behavior. 5. There was a difference in pro-environmental behaviors by the following life style types: ecological value orientation, economical value orientation, convenience centric orientation and uninterested. 6. For the relative contribution comparison of background variations (socio-economic variation and environmental variation) and life style variations to the pro-environmental behavior of urban empolyed wives, this research additionally applied each independent variable group. As a result, the explanation level drastically increased in the third step that analyzed the relationship with life style.

Anger, Problem Behaviors, and Health Status in Adolescent Women (청소년기 여성의 분노와 문제행동 및 건강상태)

  • Park Young-Joo;Han Keum Sun;Shin Hyun Jeong;Kang Hyun-Chul;Moon So-Hyun
    • Journal of Korean Academy of Nursing
    • /
    • v.34 no.7
    • /
    • pp.1234-1242
    • /
    • 2004
  • Purpose: This cross-sectional study was designed to identify anger-expression types of adolescent women and investigate the relation between the identified anger-expression types and their problem behaviors and health status. Method: One hundred ninety nine high school freshmen were recruited from September to November, 2003. Data was analyzed using descriptive statistics, cluster analysis, 2-test, ANOVA, and Duncan's multiple comparison test. Result: Three anger-expression types in adolescent women were found; Anger-out/in, Anger-control/in, and Anger-control type. Adolescent women with frequently using the anger-out/in type and with higher state anger reported more delinquent behaviors, more health risk behaviors, and higher psychosomatic symptoms. However, adolescent women with lower state anger and frequently using the anger-control type reported more depression scores. Conclusion: There is a need to further clarify the relationship between anger-expression type sand depression in adolescent women. The findings suggest the necessity of a development of the program for lowering the anger level and controlling the unfavorable anger expression types such as the anger-out in.

Scholastic Self-Concept And Attribution Tendencies Of Institutionalized Children (시설아동의 학문적 자아개념과 귀인성향에 관한 연구)

  • Chang, Hee Soon;Lee, Young
    • Korean Journal of Child Studies
    • /
    • v.11 no.1
    • /
    • pp.100-114
    • /
    • 1990
  • The present research investigated scholastic self-concepts and attribution tendencies of institutionalized children in comparison with home-reared children. The subjects were 286 institutionalized and 327 home-reared fifth. sixth, seventh, and eighth grade children. Instruments were the Scholastic Self-Concept Test(Park. Lee. & Cho. 1980). the Attribution Tendency Test(Lee, 1983) and a questionnaire constructed by the researcher. Data were analyzed by ANOVA. Duncan's Test of Multiple Comparsion, and product- moment correlation coefficient(r). Findings showed that (1) the scholastic self-concept of institutionalized children was lower than that of home-reared children; (2) higher scholastic self-concept of institutionalized children was correlated with (i) higher degree of contentment with the institution. (ii) shorter length of residence in the institution. and (iii) older age at admission to the institution; (3) institutionalized children attributed achievement more to uncontrollable. external factors. while home-reared children attributed achievement more to controllable. internal factors; (4) institutionalized children with a lower degree of contentment with the institution attributed achievement to luck while those with a higher degree of contentment attributed achievement to ability; and (5) the higher the scholastic self-concept. the higher the tendency to attribute achievement to internal. controllable factors, and the lower the scholastic self-concept, the higher the tendency to attribute achievement to external, uncontrollable factors.

  • PDF