• Title/Summary/Keyword: Variance of Analysis

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Surface roughness prediction with a full factorial design in turning (완전요인계획에 의한 선삭가공시 표면거칠기 예측)

  • Yang, Seung-Han;Lee, Young-Moon;Bae, Byong-Jung
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.1 no.1
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    • pp.133-140
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    • 2002
  • The object of this paper is to predict the surface roughness using the experiment equation of surface roughness, which is developed with a full factorial design in turning. $3^3$ full factorial design has been used to study main and interaction effects of main cutting parameters such as cutting speed, feed rate, and depth of cut, on surface roughness. For prediction of surface roughness, the arithmetic average (Ra) is used, and stepwise regression has been used to check the significance of all effects of cutting parameters. Using the result of these, the experimental equation of surface roughness, which consists of significant effects of cutting parameters, has been developed. The coefficient of determination of this equation is 0.9908. And the prediction ability of this equation was verified by additional experiments. The result of that, the coefficient of determination is 0.9718.

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The Effects of Blouse Types on Ventilation Clothing Microclimate (블라우스내에 형성되는공기층이 의복내환기에 미치는 영향 연구)

  • Park Woo Mee;Choi Chul Ho
    • Journal of the Korean Society of Clothing and Textiles
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    • v.16 no.2
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    • pp.169-180
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    • 1992
  • The purpose of this study is to investigate the effects of type of clothing microclimate and exercise condition on ventilation. The experimental system employed a trace gas technique of the previous research. Clothing microclimate volume measurement was based on the substitution water technique for inter-clothing air volume. The experimental variables were tested at four levels of clothing microclimate spacing, microclimate shape of the previous research and two levels of exercise conditions. 2, 4, 6 cm ease were added to B/2+4 of basic blouse pattern for the microclimate spacing variable. Each combination of three variables were tested in triplicate. Analysis of variance of experimental variables on vetilation, such as oxygen exchange rate, half time of first order model was conducted. Oxygen exchange rate and half time of first order model are affected by the shape of microclimate air and exercise condition.

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Recognition and Importance-Satisfaction of Apple Processed Products (사과가공품의 인지도 및 중요도-만족도 분석)

  • Huh, Moo-Yul
    • Journal of the Korean Society of Food Culture
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    • v.25 no.1
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    • pp.1-8
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    • 2010
  • The purpose of this study was to analyze consumer recognition, perceived importance, and satisfaction to create a new apple processed product and to promote its consumption. Data were collected from 527 men and women living throughout Korea through a self-administrated questionnaire. Frequencies, one-way analysis of variance, and Duncan's multiple range were conducted using SPSS v. 17.0 software. Recognition of juice and drinks, milk and dairy products, apple jam, and seasoning was high, while that of the other products was low. Consumer perceived importance of products was higher than consumer satisfaction of products. Quality preservation attributes were sanitation, taste, flavor, place of origin, and convenience of purchase. Attributes for improved consumer post-purchase satisfaction after purchasing were content of apple, quality of apple, price, and certificate of quality. The attributes of content of apple and certificate of quality were statistically different by consumer age.

Recall and Development of Organizational Strategy for Script-Based Category Typicality in Preschool Children (스크립트적 범주전형성에 따른 학령전 아동의 회상수행과 조직화 책략 발달)

  • Lee, Kyung-Nim
    • Korean Journal of Human Ecology
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    • v.7 no.1
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    • pp.25-38
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    • 1998
  • The purpose of this study was to examine developmental trends in script-based organization strategy and relative influences of age, use of organizational strategy and category typicality of lists on children's recall. The subjects were 120 infant children, -40 four years old, 40 five years old, 40 six years old. All subjects were received 1 of 2 slot-filler lists of items differing in category representativness. Data were analysed by two-way Anova, Duncan's post-hoc test and Multiple Regression analysis. The major findings were as follows. 1. Recall and use of organizational strategy were increased with age. 2. At each age level, children showed high level of recall and organization strategy for category typical than category atypical. 3. Children's age, use of organizational strategy and category typicality of list significantly predicted children's recall. 42% of the variance of children's recall was explained by three variables. The relative influence of age to the prediction of children's recall was the strongest.

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A Study of Quality of Life in Middle-aged Men (중년남성의 삶의 질에 대한 연구)

  • 이영휘
    • Journal of Korean Academy of Nursing
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    • v.32 no.4
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    • pp.539-549
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    • 2002
  • This study was undertaken to examine the degree of quality of life and to analyze the factors affecting those quality of life in middle-aged men. Method: The subjects of this study were 208 men aged by 35-55 from 3 business enterprises located in Seoul and Incheon. Data collection was conducted through the use of 5 questionnaire. Result: There were significant differences in the quality of life according to marital status, religion, educational level, number of children and total house income. A positive correlation was found between quality of life and all independent variables i.e., health promoting behaviors, health perception, social support, self-esteem and self-efficacy. Stepwise Multiple Regression Analysis revealed that the most powerful predictor was self-esteem. Self- esteem, health perception, health promoting behaviors, marriage, and social support accounted for 65% of the variance in quality of life in middle-aged men. Conclusion: All independent variables i.e., health promoting behaviors, health perception, social support, self-esteem and self-efficacy were related with quality of life in middle-aged men. Therefore it is necessary to develop the nursing intervention with these variables to increase the quality of life for middle-aged men.

A Study on Fashion Leadership I -The Predictors of Fashion Leadership- (유행선도력에 관한 연구 I -유행선도력 예측변인에 대하여-)

  • Ree Hwa Yon;Rhee Eun Young
    • Journal of the Korean Society of Clothing and Textiles
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    • v.12 no.3 s.28
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    • pp.295-307
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    • 1988
  • The purposes of the study were to identify the general predictors of fashion leadership and to compare the fashion leadership predictors among different social groups. Thirty-one variables (thirteen fashion-related variables, five social variables, nine psychological variables, four demographic variables) were included in the regression analysis. Data were obtained from 446 women living in Seoul area by self-administered questionnaire. The results of the study were as follows: 1. Seven variables explained about 64 percent of the total variance of fashion leadership. The most important predictors of fashion leadership were fashion interest, use of marketer-dominated fashion information source, and 'stable-creative' self-image. 2. The predictors that consistently predict fashion leadership across different social groups (students, career women, housewives) were fashion interest and use of marketer-dominated information source. The predictors of innovativeness and opinion leadership were very different among groups.

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The Perception of Suffering by Hospice Nurses (말기 암환자를 간호하는 간호사의 고통 인식에 관한 태도 : Q-방법론 적용)

  • Jo Kae-Hwa;Kim Myung-Ja
    • Journal of Korean Academy of Fundamentals of Nursing
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    • v.8 no.1
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    • pp.35-50
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    • 2001
  • The purpose of this study was to identify the perception of hospice nurses on suffering, the type of stracture and characteristics of suffering. The research process is followed : First, the researcher selected 35 statements on suffering using content analysis of in-depth interviews and a literature search Second, the researcher asked 38 hospice nurses to classify the statement cards. The result of the research showed that the hospice nurse's perception of suffering can be divided into 4 types (Self-recognition, Suffering-elimination, Relation-restoration, and Meaning-endowment). The total explained variance was 46 percent. In relation to this, nursing intervention skills could be presence, listening touch, hope, reassurance, and comforting which result in positive effects between nurse and hospice client.

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Root Characters and Freguency of Multi-stem Ginseng (다경인삼의 근형질특성과 경수발현빈도)

  • 최광태;안상득;신희석;천성룡
    • Journal of Ginseng Research
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    • v.8 no.2
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    • pp.82-90
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    • 1984
  • The Present study was undertaken to obtain the basic information on the development of multistem varieties of ginseng. The root weight per plant of multi-stem ginseng was hi燥or than that of single stem ginseng, and it was found that the greater variance due to the growing area was clear in the frequency of multistem plant. The broad heritability estimate for the number of steams was lower with the increase of the age of ginseng. The number of stems per plant was positively correlated with the number of branch roots, number of dormancy buds, and root weight. However, the root diameter was negatively correlated with the number of stems is per plant. Based on path analysis, the number of branch roots and dormancy buds showed the maximum indirect positive effects on the number of stems.

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Optimization of the Extraction Parameters of Gardenia (Gardenia jasminoides Ellis) Fruits for the Maximum Antioxidant Capacity

  • Yang, Bin;Liu, Xuan;Teng, Dike;Gao, Yanxiang
    • Food Science and Biotechnology
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    • v.18 no.4
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    • pp.867-871
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    • 2009
  • Response surface methodology (RSM) was used for the optimization of antioxidant capacity in gardenia extracts. The antioxidant capacities of gardenia fruit extracts were investigated by ferric reducing ability (FRA) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging activity (RSA) assays. The optimum extraction parameters for the strongest antioxidant capacity were the ethanol concentration (EtOH) of 48.9%, extraction temperature of $72.9^{\circ}C$, and extraction time of 29.9 min. Analysis of variance (ANOVA) showed that the quadratics of EtOH and extraction temperature had highly significant effect on the antioxidant capacity (p<0.001). The antioxidant capacity was correlated with contents of bioactive components [crocin, geniposide, and total phenolic (TP) compounds] in gardenia extracts and mainly attributed to the content of the TP compounds.

The Effects of Social Support and Coping Styles on Quality of Life in Abused Wives (사회적 지지 및 대처방식이 아내학대 피해여성의 삶의 질에 미치는 영향)

  • Kim, Jeong-Ran;Kim, Kyeong-Shin
    • Korean Journal of Human Ecology
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    • v.16 no.1
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    • pp.27-37
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    • 2007
  • The purposes of present study were to investigate relationships among wife abuse, social support, coping styles, and quality of life, and to examine how abused wives' social support influences coping and quality of life. The subjects were consisted of 144 abused wives in Gwangju, Korea. The major findings are as follows; 1. Problem-focused coping and seeking of social support were different by the wife abuse. 2. Abused wives' quality of life was positively related monthly income, social support, problem-focused coping, and wishful thinking coping. 3. The results of the hierarchical regression analysis indicated that the social support had the strongest impact on abused wives' quality of life. And the problem-focused coping, monthly income, and emotion-focused coping. These variables accounted for 32% of variance of abused wives' quality of life.