• Title/Summary/Keyword: T-test analysis

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The Aspect of Voice Characteristics Change after Botulinum Toxin-A Injection in Patients with Adductor Spasmodic Dysphonia according to Vocal Tremor (음성진전 유무에 따른 내전형 연축성 발성장애의 보툴리눔 독소-A 주입 후 음성 특성 변화 양상)

  • Ko, Hyeju;Choi, Hong-Shik;Lim, Sung-Eun;Choi, Yaelin
    • Phonetics and Speech Sciences
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    • v.4 no.4
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    • pp.95-107
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    • 2012
  • As BTX-A, which has been known to be the most effective treatment for ADSD, is not effective in treating vocal tremors, voice assessment must be employed to perform differential diagnosis of SD and vocal tremor in an accurate fashion. In this study, the characteristics of vocal changes after botulinum toxin injection were compared by analyzing the voice characteristics resulting from the presence of vocal tremors using objective analysis devices, with the aim of helping to provide prognoses and to determine remedial effects in clinical cases comprising patients with adductor spasmodic dysphonia accompanied by voice tremors. Respiratory function tests, aerodynamic analysis, electroglottography (EGG), acoustic analysis, auditory perception tests, and K-VHI had been conducted at intervals of four, eight, and twelve weeks before and after injection, targeting a group of 17 ADSD female patients (a ADSD group of four with vocal tremor and a ADSD group of 13 without voice tremor). For average FVC and FEV1, the T group showed statistically significant low averages compared with the NT group, whereas the T group showed statistically significant high average ATRI compared with the NT group. In addition, the T group showed a statistically significant Fatr, lower than that of the NT group. For the ADSD group of patients with voice tremor, their vocal tremor remained unchanged despite noticeable decrease in wringing voices. In other words, as the vocal tremor and wringing voices are two distinctive features, there is a need for the two features to be targeted separately for differential diagnosis.

Housing Values and Satisfaction among University Students in Gwangju and the Chonnam Area (광주.전남지역 대학생의 주거가치와 주거 만족도)

  • Kim, Mi-Hee;Noh, Se-Hee
    • Journal of the Korean housing association
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    • v.19 no.4
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    • pp.11-20
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    • 2008
  • The purpose of this study is to gather baseline data on perceived housing values and satisfaction rates among consumers with the aim of using this information for future planning. Self-administered questionnaires were provided to 1000 university students from Gwangju and the Chonnam area from 2007 October 8th to 30th. The collected data was used to conduct comparative and descriptive statistical analysis: factor analysis, cluster analysis, t-test, $x^2-test$ and one-way ANOVA. The main findings are as follows: Firstly, in relation to perceived house values, students identified three factors as important: pursuit of convenience, disposition toward individuality-orientation and consciousness of others. The respondents regarded convenience as very important, especially in regard to one's safety, health and location of amenities. Secondly, cluster analysis based on perceived house value revealed passive and energetic types. Students in the energetic type exhibited a tendency to prefer convenience, independence, and consciousness of others. Finally in terms of housing satisfaction, the respondents identified four factors as important: house quality, neighborhood environment, local socio-psychological environment, and location. Housing satisfaction was higher among students who lived in large or new houses, shared the same house with their family, and had a room all to themselves. Accoding to these findings, university students important value safety, health and environmental-friendliness in a house and they find location important. Therefore, future houses should reflect these wants.

Flexural behavior and resistance of uni-planar KK and X tubular joints

  • Chen, Yiyi;Wang, Wei
    • Steel and Composite Structures
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    • v.3 no.2
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    • pp.123-140
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    • 2003
  • The importance of the research on moment-resistant properties of unstiffened tubular joints and the research background are introduced. The performed experimental research on the bending rigidity and capacity of the joints is reported. The emphasis is put on the discussion of the flexural behavior of the joints including sets of geometrical parameters of the joints and several loading combinations. Procedures and results of loading tests on four full size joints in planar KK and X configuration are described in details at first. Mechanical models are proposed to analyze the joint specimens. Three-dimensional nonlinear FE models are established and verified with the experimental results. By comparing the experimental data with the results of the analysis, it is reported reasonable to carry out the structural analysis under the assumption that the joint is fully rigidly connected, and their bending capacities can assure the strength of the members connected under certain limitation. Furthermore, a parametric formula for inplane bengding rigidity of T and Y type tubular joints is proposed on the basis of FE calculation and regression analysis. Compared with test results, it is shown that the parametric formula developed in this paper has good applicability.

Materialism and Conspicuous Consumption in Clothing Information Sources (물질주의와 의복의 과시적 소비성향이 정보원 사용에 미치는 영향)

  • 이옥희;조은영
    • The Research Journal of the Costume Culture
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    • v.8 no.2
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    • pp.293-304
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    • 2000
  • The purpose of this study was to analyze the relationship between materialism and conspicuous consumption, and information sources. Data were administered to 357 women living in Sunchon from June to July 1999. For analysis of the data, factor analysis, t-test, one-way ANOVA, duncan's multiple range test, and multiple regression analysis were employed. The results of this study were summarized as follows. 1) Materialism was shown to have the significant differences according to age, marriage, education, occupation, social stratification groups. The higher the education, occupational status, social stratification groups and the lower the age is, or unmarried, the higher is materialism. The use of information sources were shown to have the significant differences according to age, marriage, education, occupation, income, social stratification groups. The higher the education, income, social stratification groups. The higher the education, income, occupational status, social stratification groups and the lower the age is, or unmarried, the higher is use of information. 2) Materialism was shown to have the significant differences according to the groups of conspicuous consumption. The higher conspicuous consumption is, the higher is materialism. The use of information were shown to have the significant differences according to groups of conspicuous consumption. The higher conspicuous consumption is, the higher is use of information. 3) The use of information were shown to have the significant differences according to materialism. The higher materialism is, the higher is use of information. 4) According to the results of the regression analysis examining the relative influences of variables affecting information, the relative importance of the variables are in order of ; happiness-pursuable materialism, conspicuous consumption and their explanatory power totalled 18.6%.

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A Study on Body Types Characteristics of Mongolian Men (몽골 남성의 체형특성에 관한 연구 - 18~24세를 중심으로 -)

  • Im, Soon;Kim, Sang-Hee
    • Journal of the Korea Fashion and Costume Design Association
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    • v.12 no.1
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    • pp.141-151
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    • 2010
  • The purpose of the study was to offer basic documents to the textile fashion industry by investigating changes of figures by various factors as each other social and environment. This study analyzes characterization and classification of body types of Mongolian men. 100 adult subjects within the 18 to 24 age group were studied. The physical measurements of the research subjects come up to a total of 63 items. Data was statistically analyzed with SPSS program using basic statistics, t-test, one-way ANOVA, Duncan-test, factor analysis and cluster analysis. The conclusions are as follows. In the result of factors analysis in physical measurements of Mongolian men, 10 factors such as the vertical size of body, on the obesity of body, the leg size, the bust from back length, the bust from front length, the shoulder size were extracted. The accumulated contributory rate of these was 73.86%. The cluster analysis for the comparison of the body types, by categorizing the body types produced three types. The comparison of 45 items in physical measurements between Korean men and Mongolian men resulted in the differences in 20 items. While the height items including stature between them showed negligible differences.

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A Study of Effects of Characteristics of Cosmetics Manufacturers' Uniform Design on Perception of Service Quality and Customer Satisfaction: Focusing on Women in Their 20s (화장품업체 유니폼디자인 특성이 서비스품질 지각과 고객만족도에 미치는 영향: 20대 여성고객을 중심으로)

  • Kim, Bogyun;Jung, Yeonja
    • Journal of Fashion Business
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    • v.18 no.4
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    • pp.125-137
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    • 2014
  • This study aims to the recognize the importance of uniform design and provide empirical data to companies after getting the effects of uniform design in cosmetics companies on service quality perception and customer satisfaction. For this, a preliminary survey was conducted against 30 college women (aged 20s) from 'K' University, and effective samples were obtained from 250 people. In terms of a research method, collected data were coded and analyzed using SPSS. The respondents' characteristics were analyzed using descriptive statistics. For reliability analysis, Cronbach's ${\alpha}$ was used. For a validity test, factor analysis was performed. In addition, correlation analysis was carried out to examine multicollinearity among variables. The analysis results found that the characteristics of uniform design have a positive effect on service quality and customer satisfaction. Among the characteristic of uniform design, however, functionality wasn't confirmed in a relational test. This kind of result was obtained because the uniform was mostly analyzed from customers' perspective, not from the wearer's standpoint. It is expected that the study results would be helpful in establishing brand identity through the improvement of the importance of uniform design.

Effect of Grandchildren's Solidarity with Their Grandparents on Caring Attitude for the Elderly (조부모-손자녀 유대관계가 노인부양의식에 미치는 영향 - 전북지역 대학생을 중심으로-)

  • Hong, Dal Ah Gi;Ha, Keun-Young
    • Korean Journal of Human Ecology
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    • v.11 no.2
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    • pp.107-121
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    • 2002
  • The purpose of His research was to investigate the effect of grandchildren's solidarity with their grandparents on their caring attitude for the elderly. The participants were 311 college students in Chollabuk-Do province. Such statistical methods as factor analysis, ANOVA, Duncan's multiple range test, t-Test, pearson's correlation analysis, and multiple regression analysis were performed for this research. The results showed that the solidarity with grandparents was significantly different according to the college grade, birth order, mother's and grandparents' educational levels, economic status of grandparent, relationship with parents, and grandparents' ages. It was also found that there were significant differences in the levels of grandchildren's caring attitude for the elderly according to the college grade, occupational status of mother, relationship with parent, parents' educational levels, and family atmosphere. Finally, multiple regression analysis results indicated that grandchildren's caring attitude for the elderly was significantly influenced by grandchildren's affectional and contact solidarity with grandparents, relationship with parent, and grandparents' economic status.

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A Review on the Use of Effect Size in Nursing Research (간호학 연구에서 효과크기의 사용에 대한 고찰)

  • Kang, Hyuncheol;Yeon, Kyupil;Han, Sang-Tae
    • Journal of Korean Academy of Nursing
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    • v.45 no.5
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    • pp.641-649
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    • 2015
  • Purpose: The purpose of this study was to introduce the main concepts of statistical testing and effect size and to provide researchers in nursing science with guidance on how to calculate the effect size for the statistical analysis methods mainly used in nursing. Methods: For t-test, analysis of variance, correlation analysis, regression analysis which are used frequently in nursing research, the generally accepted definitions of the effect size were explained. Results: Some formulae for calculating the effect size are described with several examples in nursing research. Furthermore, the authors present the required minimum sample size for each example utilizing G*Power 3 software that is the most widely used program for calculating sample size. Conclusion: It is noted that statistical significance testing and effect size measurement serve different purposes, and the reliance on only one side may be misleading. Some practical guidelines are recommended for combining statistical significance testing and effect size measure in order to make more balanced decisions in quantitative analyses.

A Study on the Stress Level Percepted by the married Women during Family Life and it's Related Variables. (기혼여성이 지각한 가정생활상의 Stress 수준 및 관련 변인 고찰)

  • 김경아;이정우
    • Journal of Families and Better Life
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    • v.8 no.2
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    • pp.101-118
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    • 1990
  • The purpose of this study is to examine the stress level and factors percepted by the married women during family life, and to identify the related variables influencing on stress level. For this purpose, questionnaires were distributed to the 650 married women who have been living in seoul. Among them 463 data were selected. For data analysis, the statistical method such as the factor analysis frequency distribution percentile , t-test, ANOVA, Duncan's Multiple Range Test and Stepwise Regression Analysis were used. the major findings were summarized as follows; 1) The general tendancy of the stress level percepted by the married women during family life was relatively low. 2) The household background variables(age, level of education, income, type of family, number of children, status of employment ) have turned out to be significant on the stress level of married women except family type. 3) All the social-psychological variables(socio-economic status, communication interaction, resources perception, psychological satisfaction) showed significant differences according to the stress level percepted by the married women during family life. 4) The level of work identity was the important factor on the stress level percepted by the married women during family life. 5) In Stepwise Multiple Regression Analysis, the married women's stress level during family life was greatly influenced by variables such as the resource perception and the psychological satisfaction.

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Classification of Parents' Materialism Inclination Recognized by the Adolescents and Analysis of Their Financial Characteristics (청소년이 지각한 부모의 물질주의 성향과 그에 따른 유형 분류 및 재정적 특성 분석)

  • Hong, Eun-Sil
    • Journal of Families and Better Life
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    • v.26 no.5
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    • pp.377-390
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    • 2008
  • This paper investigated materialism inclination of the parents recognized by the adolescents and analysed the relationships between 5 categorized types about parents' materialism inclination and financial characteristics of the adolescents. Statistical analysis was achieved by using Cronbach'$\alpha$, paired t-test, one-way ANOVA, two-way ANOVA, Duncan's multiple range test, chi-square analysis, and Ward' hierarchical cluster analysis with a total of 801 questionnaires. The results are summarized as follows: First, the adolescents felt that calculated points of father and mother's materialism inclination were lower than median points and mother's inclination for materialism was higher than that of father. Second, five categories were classified according to materialism inclination of parents. First classified category was the type which showed both parents had little interest in materials and the second category was the type which father had strong interest in materials. The third one was the type which mother had strong interest in materials. The last two categories were the ones which both parents had much interest in materials. Final result of this study revealed that attitudes of the adolescents for materialism and money were higher for those whose parents had strong interest in materialism than those whose parents had little materialism interest. They showed not only the behaviors of impulsive and overspending consumption but also low financial satisfaction and high financial stress.