• 제목/요약/키워드: Duncan's Multiple Comparison

검색결과 70건 처리시간 0.028초

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

  • 오영태;김기형
    • 대한교통학회지
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    • 제19권2호
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    • pp.21-28
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    • 2001
  • 본 연구는 다양한 좌회전 곡선반경을 갖고 있는 교차로에서의 좌회전 포화교통류율의 분석을 통하여 좌회전의 직진환산계수를 산정하는 것이다. 한국 도로 용량편람에서는 곡선반경이 약 20m 이상인 곳에서는 좌회전 전용차로에 대하여 직진과 같은 포화교통류율을 보이는 것으로 조사되어 좌회전 보정계수는 없는 것으로 제안하고 있다. 하지만 KHCM은 간선도로 위주로 조사 분석되어 곡선반경이 20m 이하인 교차로가 제외되어 있다. 이에 본 연구에서는 좌회전 전용차로 1개를 갖고 곡선반경이 20m 이하인 교차로 포함하여 다양한 곡선반경 가진 교차로를 대상으로 연구를 수행하였다. 본 연구에서는 포화교통류율을 산출하는데 있어서 분산분석의 후속단계인 다중비교(Multiple comparison)방법중 던컨검정(Duncan's Test)을 이용하였다. 본 연구에서 산정된 좌회전의 직진환산계수는 도로용량편람에서 교차로 분석시 교차로 곡선반경을 반영한 정확한 포화교통류율을 산정할 수 있다. 본 연구의 결과는 좌회전 곡선반경 20m 미만 교차로에서의 좌회전 S는 직진포화교통류율 보다 낮게 결과가 나타났다. 이를 직진환산계수화 시키면 좌회전 곡선반경에 따라서 1.05에서 1.14사이다.

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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) (Effect of Vacuum Levels on the Palatability Characteristics of Rice Packed in Retort Pouch)

  • 최광수
    • 한국식품영양과학회지
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    • 제13권2호
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    • pp.205-208
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    • 1984
  • Retort pouch포장 쌀밥의 포장내(包裝內) 진공도(眞空度)가 제품(製品)의 식미특성(食味特性)에 미치는 영향(影響)을 조사하기 위하여 밀양 23호 쌀로 전기밥솥에서 취반한 보통밥과 진공도 30 cm Hg (RP-30)와 75 cm Hg(RP-75)로 retort pouch 포장한 쌀밥에 대하여 관능검사를 실시하고 이 결과에 따라 각 처리구에 대한 식미특성 (외관, 향기, 맛, 찰기, 경도, 식미의 종합평가)의 평균평점에 대하여 통계적인 방법으로 유의성 검정을 실시하여 다음과 같은 결과를 얻었다. 1. 처리간의 외관은 F값이 $47.28^{**}$로써 고도의 유의차가 있었고 종합적 식미, 찰기, 맛에 있어서도 고도의 유의차가 있었다. 경도 및 향기도 유의차가 있어서 retort pouch내의 진공도가 쌀밥 제품의 식미특성에 상당한 영향을 미침을 보여 주었다. 2. Duncan의 다중비교검정법(多重比較檢定法)으로 retort pouch 쌀밥의 포장 진공조가 식미특성에 미치는 영향에 대한 유의성 검정 결과 외관, 향기, 맛 및 식미의 종합평가에 있어서 보통밥과 RP-30간에는 유의차가 없었으나 이들과 RP-75의 retort pouch포장 쌀밥과는5% 수준에서 모두 유의차가 있었다. 찰기는 3처리 상호간 모두 유의차가 있었고 retort pouch내의 진공도가 높을수록 찰기가 높았다. RP-30 쌀밥과 RP-75의 쌀밥의 경도에 있어서 유의차가 있었다. 3. Retort pouch 쌀밥의 식미특성 상호간의 단순상관을 조사한 결과 식미의 종합평가와는 맛 ( $r=0.793^{**}$), 향기($r=0.640^{**}$), 외관($r=0.576^{**}$) 및 경도($r=0.562^{**}$)의 순으로 상관성을 나타내었다.

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

  • 이은희
    • 한국가정과교육학회지
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    • 제33권3호
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    • pp.129-142
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    • 2021
  • 본 연구는 2019년 5월 중에 J 지역 예비교사 270명을 대상으로 설문지법에 의해 의생활 라이프스타일이 교사의복에 대한 태도에 미치는 영향을 파악함으로써 교직의복문화의 교육적 자료를 제공하고자 하였다. 본 연구의 자료분석을 위하여 SPSS 24.0 Program을 이용하여 요인분석, Cronbach's α 신뢰도 계수, t검증, 일원변량분석과 Duncan의 다중비교검증, 다중회귀분석을 실시하였다. 연구결과, 첫째, 중등학교 예비교사의 의생활 라이프스타일은 패션유행지향, 의복중요성지향, 매력적 외모지향, 경제성지향 요인으로, 또한 교사의복에 대한 태도는 활동성, 유행성, 정숙성 요인으로 유형화되었다. 둘째, 중등학교 예비교사의 의생활 라이프스타일, 교사의복에 대한 태도는 인구통계학적 변인인 성별, 학년에 따라 통계적으로 유의미한 차이가 있었다. 셋째, Z세대인 중등학교 예비교사의 의생활 라이프스타일은 교사의복에 대한 태도에 영향을 주는 것을 알 수 있었다. 결론적으로, 이제까지의 교사의복에 대한 고정관념에서 벗어나 교사의 변화하는 라이프스타일에 따라 의복을 착용하고 교직을 수행하는 교직의복문화가 형성되어져야 하겠다.

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

  • 김동욱;김민수
    • 한국조경학회지
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    • 제28권4호
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    • pp.1-8
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    • 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.

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

  • 전양진;전옥주
    • 한국의류학회지
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    • 제32권2호
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    • pp.284-293
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    • 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.

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

  • 강경원;강병갑;고미미;신선화;최선미
    • 한국한의학연구원논문집
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    • 제13권2호통권20호
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    • pp.121-125
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    • 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.

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

  • 이현주;손경희;이민준
    • 한국식품조리과학회지
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    • 제18권1호
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    • pp.63-72
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    • 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.

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

  • 변순희;계선자
    • 대한가정학회지
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    • 제42권9호
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    • pp.111-134
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    • 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.

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

  • 박영주;한금선;신현정;강현철;문소현
    • 대한간호학회지
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    • 제34권7호
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    • pp.1234-1242
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    • 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.

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

  • 장희순;이영
    • 아동학회지
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    • 제11권1호
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    • pp.100-114
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    • 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.

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