• Title/Summary/Keyword: Variance of Analysis

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Characteristics and Sensibility of Work Clothes Materials Developed Taking into Account Work Environment of the Major Industrial Settings (주력산업현장의 작업환경을 고려하여 개발된 작업복 소재의 특성 및 감성 연구)

  • Bae, Hyun-Sook
    • Journal of the Korean Society of Clothing and Textiles
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    • v.39 no.5
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    • pp.778-788
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    • 2015
  • This study evaluated the characteristics and sensibility of work clothes materials developed that took into account the work environment of major industrial settings, for which a selection was made according to spring/autumn use and winter use. The physical properties of the existing and test weaving of the work clothes materials were compared after the test weaving of work clothes materials through material design, which altered the yarn count, composition, weave and density of material. To evaluate sensibility of work clothes materials subjectively, seven ranks' semantic differential scale questions were developed with polar adjective pairs. The test weaving of work clothes materials showed improved performance (such as tensile strength, dimensional change, water vapor permeability, and color fastness) compared to the existing materials. The common factor analysis indicated that the explanatory power of the cumulative variance for the spring/autumn use and winter use was 71.19% and 69.53%, respectively.

Change of stochastic properties of MEMS structure in terms of dimensional variations using function approximation moment method (함수 근사 모멘트 기법을 활용한 치수 분포에 따른 MEMS 구조물의 통계적 특성치 변화에 관한 연구)

  • Huh J.S.;Kwak B.M.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2005.06a
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    • pp.602-606
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    • 2005
  • A systematic procedure of probability analysis for general distributions is developed based on the first four moments estimated from polynomial interpolation of the system response function and the Pearson system. The function approximation is based on a specially selected experimental region for accuracy and the number of function evaluations is taken equal to that of the unknown coefficient for efficiency. For this purpose, three error-minimizing conditions are proposed and corresponding canonical experimental regions are formed for popular probability. This approach is applied to study the stochastic properties of the performance functions of a MEMS structure, which has quite large fabrication errors compared to other structures. Especially, the vibratory micro-gyroscope is studied using the statistical moments and probability density function (PDF) of the performance function to be the difference between resonant frequencies corresponding to sensing and driving mode. The results show that it is very sensitive to the fabrication errors and that the types of PDF of each variable also affect the stochastic properties of the performance function although they have same the mean and variance.

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Factors Influencing the Farmers Syndrome (농부증 영향요인)

  • Kim, Eun-Ju
    • Research in Community and Public Health Nursing
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    • v.13 no.4
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    • pp.817-825
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    • 2002
  • Purpose: This study was carried out to investigate the prevalence and the main factors influencing the farmer's Syndrome in farmers in Korea. Method: A survey questionnaire was completed by 238 farmers who lived in 8 agricultural districts in Seosan City. The data were collected from April 10 to May 5, 2002. Results: The prevalence of the farmer's Syndrome was 42.6%, and its prevalence rate in woman was higher than that in man. The prevalence of the farmers syndrome proportionally increased with advanced age. Variables that were positively correlated with the farmer's syndrome were age, duration of farming, days of resting, and the number of the agricultural chemical's poisoning. On the other hand, variables that were negatively correlated with the farmers syndrome were smoking, sleeping hours, economic condition, and level of educational. In a regression analysis, the factors influencing the farmers syndrome were age, sex, sleeping hours, days of resting, and the number of the agricultural chemical's poisoning, which accounted for 25% of the total variance. Conclusion: Based on these study results, older age and woman gender are the remarkable risk factors influencing the farmer's syndrome. Sleeping hours, days of resting, and the number of the agricultural chemical's poisoning were also the significant attributable variables to the farmers syndrome.

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A Study on the Sociopsychological Factors Influencing the Dietary Compliance of Diabetics Using Questionnaire (당뇨환자의 식사처방 순응도에 영향을 미치는 사회심리적 요인 분석 II: 설문조사 방법을 이용하여)

  • 박동연;최선정;박혜련;안홍석
    • Korean Journal of Community Nutrition
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    • v.5 no.1
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    • pp.36-49
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    • 2000
  • The purpose of the study was to find the sociopsychological factors predicting the intention of compliance with the dietary regimen in diabetes with a questionnaire. Data were collected from 282 adult noninsulin-dependent diabetics in Seoul, Kyoggida, and Kyongsangbukdo in Korea. Stepwise multiple regression analysis was conducted with predictor variables from theories of the Health Belief Model, Social Cognitive Model, The Theory of Reasoned Action , and Social Support. The behavioral intention of compliance with the prescribed diet was the independent variable. Subjects norm self-efficacy knowledge about diet therapy, outcome expectation, relationship with medical team, threat of deterioration of disease, and social support were the independent variables, The mean score of behavior intention was high ie 35.3 out to 42. Subjective norm and self-efficacy were the significant variables to predict the intention of dietary compliance. These variables comprised 39% of the common variance. To increase dietary compliance by influence of the referents and improve self-efficacy significant referents must be included and concrete and practical methods to follow the dietary regimen must be provided in nutrition education.

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The Development of a Scale Assessing the Risk of Discontinuation of Tuberculosis Treatment (결핵 환자의 초치료 중단위험 사정도구 개발)

  • Choi, Jin Ok;Sung, Kyung Mi
    • Korean Journal of Adult Nursing
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    • v.27 no.2
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    • pp.156-169
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    • 2015
  • Purpose: This study identified the reasons why tuberculosis (TB) patients withhold treatment in a bid to develop a assessment scale to select patients who needs nursing intervention in the early stage and decrease the risk of discontinuation of treatment. Sample: There were two samples. A sample of 191 patients with TB and having primary treatment and a second sample of N who were under re-treatment Methods: The study design included qualitative and quantitative methods. Qualitative data were collected from in-depth interviews of TB patients under re-treatment. The quantitative data were collected from 191 patients with TB under primary treatment. Results: Exploratory factor analysis revealed 11 factors explaining 69.6% of total variance. These factors were categorized into four subgroups. A depression scale was used to establish concurrent validity. The depression scale had a positive relationship (r=54) with the discontinuing of primary treatment. The internal consistency reliability for the four subgroups was over .84. The confidence coefficient was Cronbach's ${\alpha}$ .95. The final scale was a self-reported four Likert scale including 50 items. Conclusion: Reliability and validity was established for the scale and the scale can be used to examine the risk of treatment discontinuation for TB. The scale is an important resource for nursing interventions in identifying and treating high risk clients.

Design of menu structures for the human interfaces of electronic products (전자제품 휴먼 인터페이스의 메뉴 설계 방안)

  • 곽지영;한성호
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 1995.04a
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    • pp.534-544
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    • 1995
  • Many electronic products employ menu-driven interfaces for user-system dialogue. Unlike the software user interfaces, a small single-line display, such as a Liquid Crystal Display, is typically used to present menu items. Since the display can show only a single menu item at a time, more serious navigation problems are expected with single-line display menus(SDM). This study attempts to provide a set of unique guidelines for the design of the SDM based on empirical results. A human factors experiment was conducted to examine the effects of four design variables: menu structure, user experience, navigation aid, and number of targets. The usability of design alternatives was measured quantitatively in four different aspects, which were speed, accuracy, inefficiency of navigation, and subjective user preference. The analysis of variance was used to test the statistical effects of the design variables and their interaction effects. A set of design guidelines was drawn from the results which can be applied to the design of human-system interfaces of a wide variety of electronic consumer products using such displays. Since more generalized guidelines could be provided by constructing prediction models based on the empirical data, some powerful performance models are also required for the SDM. As a preliminary study, a survey was done on the performance models for ordinary computer menus.

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The Effects of Young Children Mother's Gratitude, Child-rearing Attitude on Family Resilience (유아기 자녀를 둔 어머니의 감사성향, 양육태도가 가족탄력성에 미치는 영향)

  • Wee, Hwee;Lee, Hyun Kyung
    • Korean Journal of Human Ecology
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    • v.24 no.3
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    • pp.327-339
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    • 2015
  • The purpose of this study was to investigate the relationship of family resilience, gratitude, and child-rearing attitude and to identify predicting factors of family resilience among mothers of young children. A correlative research design was be used for this study with self-administered questionnaires. The subjects were 248 mothers of young children from kindergarten located in Jeonnam and Gwangju provinces in Korea. Data were collected between May to June, 2013. Descriptive statistics, Pearson's correlation coefficient, and multiple regressions with PASW Statistics 18 (SPSS 18.0) program were used for data analysis. The major findings are summarized as follows: (1) Family resilience was closely related to gratitude and four types of child-rearing attitudes. Gratitude was closely related to four types of child-rearing attitudes. And rejective attitude had significantly negative relations family resilience and gratitude. (2) The significant factors affecting family resilience were mother's education level, gratitude, affective attitude, rejective attitude, autonomous attitude and controlling attitude which explained 63% of the variance. The results indicate that gratitude and child-rearing attitude were significant factors associated with family resilience among mothers of young children. In order to increase the family resilience among mothers of young children, family programs that deal with both gratitude and child-rearing attitude should be designed.

Predictors of Compliance in Hypertensive Patients (고혈압 환자의 치료지시 이행에 영향을 미치는 예측요인)

  • Min, Eun Sil;Hur, Myung-Haeng
    • Journal of Korean Academy of Fundamentals of Nursing
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    • v.19 no.4
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    • pp.474-482
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    • 2012
  • Purpose: The purposes of this study were to identify knowledge, health belief and compliance in patients with hypertension and to identify the most important predictors for compliance of hypertensive patient. Method: The participants in this study were 117 patients who were receiving treatment for hypertension at E. university hospital or one of three local clinics in D-city. Data were collected using a knowledge measurement instrument, health belief scale, and an instrument on compliance. Collected data were analyzed using $X^2$ test, ANOVA, multiple linear regression with PASW statistics 18.0 program. Results: There were statistically significantly positive correlations between knowledge of hypertension and health belief, health belief and compliance. But there was no correlation between knowledge of hypertension and compliance. In the multiple regression analysis, perceived barriers, perceived severity, perceived benefits were significant predictors to explain compliance and accounted for 54.1% of the variance in compliance. Conclusion: The results of the study indicate that health belief and compliance are significantly strongly correlated. Thus it is suggested that nursing interventions to improve compliance should include nursing care plans to increase health belief, perceived severity, perceived benefit and to decrease perceived barrier.

Comparisons of Fatty Acid intake of Hypercholesterolemia in Women (고콜레스테롤혈증 여성 환자의 지방산 섭취량 비교)

  • Lee, Seung-Rim;Kim, Sang-Yeon;Jang, Yu-Gyeong
    • Journal of the Korean Dietetic Association
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    • v.7 no.4
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    • pp.373-384
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    • 2001
  • The purpose of this study was to compare with in fatty acid intakes between hypercholesterolemia group and normocholesterolemia group, aged between 30 to 65 years old in women. The subjects were classified as hypercholesterolemia group and normocholesterolemia group based on The Guideline for Korean Hyperlipidemia. Dietary intakes of fatty acids were by means of a 24-hr recall method with food models and measuring tools. We analyzed both data sets together using analysis of variance the chi-square test and student's t-test(SPSS for WINDOWS, version 7.5). Significance was defied as a P value <0.05. The results obtained are summarized as follows. Mean age, BMI and percentage of postmenopausal women in hypercholesterolemia group were significantly higher than those of normocholesterolemia group. Percent of total energy from fat in hypercholesterolemia group tended to be higher than that in normocholesterolemia group. C16:0(Palmitic acid) and saturated fatty acids(SFA) intake of hypercholesterolemia group was significantly higher than that of normocholesterolemia group. Therefore, women who suffered from hypercholesterolemia were recommended to control body weight and consume foods containing low SFA and cholesterol.

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Health-promoting Lifestyle of Nursing Students: Using Mixed Methods Research (간호대학생의 건강증진 생활양식: 혼합연구설계)

  • Lee, Hyun-Ju
    • Research in Community and Public Health Nursing
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    • v.30 no.4
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    • pp.414-425
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    • 2019
  • Purpose: The purpose of this study was to examine the effects of psychosocial wellbeing status and self efficacy on health-promoting behavior of nursing students, and to explore the experiences related to health-promoting behavior. Methods: For this study, an explanatory sequential mixed method design approach was used with survey data collected from 148 nursing students. In addition, qualitative data for exploration of health-promoting behavior experience were collected from three focus-group interviews of 17 participants. Quantitative data were analyzed with SPSS/WIN 25.0 and qualitative data were analyzed by making contents analysis with Nvivo 12.0. Results: The results showed that psychosocial wellbeing status, self efficacy, grade, and regularity meal explained 43.0% of the variance in health-promoting behavior. And seven themes from the collected significant statements about experience of health-promoting behavior included the daily life going on without delay; changes in body which is felt; recognizing the necessity of health care; making efforts to increase physical activities; revising eating habit; looking for the way to relieve stress; and attempting to divert my thoughts. Conclusion: Based on the results of this study, it is necessary to develop and verify health program in order to improve nursing students' health-promoting behavior. And university authorities and government should make an effort to improve nursing students' health-promoting behavior.