• Title/Summary/Keyword: variance structure

Search Result 534, Processing Time 0.024 seconds

A Study of Developing the Scale on the Contents of Modern Home Education. (현대의 가정교육 내용'에 관한 척도개발연구)

  • 왕석순
    • Journal of Families and Better Life
    • /
    • v.14 no.1
    • /
    • pp.65-84
    • /
    • 1996
  • This study aims at the extraction of what is universally to be taught in modern Korean Families and its scalization. That is it attempts to provide the criterion by which we can determine what to teach children in the family not in society or school. For this purpose this study firstly reviews the preceeding studies on the subject. As a result of the review we postulate the hypothetical structure consisting of 12 domains. Secdndly we gather the parent's view on the topic by interviewing 192 parents of the students. On the basis of this study we can construct the questionnaire(Likert scale; 5 point) After we conduct an extensive empirical research(518 parents) in order to generalize 179 items of the worked-out questionnaire. We apply factor analsis(principal axis factoring oblique (promax) rotation) in the verfication of the validity. As the consequence we select 87 items consisting 15 factors which explain 71% of common variance. We name the 15 educational factors extracted in the scale as follows; Values & Sociality Training for basic living habits The maintenance of the culture life on the family Religious life Learning guide Economic life Patriotism Independent living Table manners The management of commodity The preservation of family unity Sex & a Frendship with the opposite sex Esteem for a traditional way of life Respect for the Old Filial piety. The reliabiliy of the scale is the cronbach a=.96 which turns out to be satisfactory.

  • PDF

A Study on the Basic Bodice Pattern, Sizing and Grading Method for Misses (미혼여성의 기본원형 및 등급법에 관한 연구 (II))

  • 도재은
    • Journal of the Korean Home Economics Association
    • /
    • v.20 no.2
    • /
    • pp.73-84
    • /
    • 1982
  • The purpose of this study was to develop a basic bodice pattern and establish standards regrading to the size and grading of Korean misses' measurements in order to provide modern data for the ready-to-wear garment industry. 222 girls, aged from 18 to 27, were measured on 19 items of their structure. Mean, standard deviation, coefficient of variance, maximum, minimum, range and correlation coefficient between each items were analized. The analysis revealed the following significant results. The fundamental difference data of the bodice pattern and grading measurements between the year of 1975 and 1981 were as follow. (1) The measurements of bust and center back were used as a foundation to establish a standard size and grading. (2) Ranges of the bust circumference measurements were increased. Thus the sizes ere classfied into 5 groups. (3) The ease of bust circumference was increased due to the increasement of shoulder width. (4) The increase of the upper arm resulted to lower the bust line. (5) The shoulder slopes were higher than 1975. Therefore, the basic measurements of the shoulder slopes were reduced. (6) In spite of the front neck measurements were not changed, the back measurements were requied to increase. (7) the center front length became much shorter in the contrast with the increase of the center back length.

  • PDF

A Structural Equation Model on Health Behavior Adherence for Elders with Prehypertension: Based on Self-Determination Theory (자기결정성 이론에 근거한 고혈압 전단계 노인의 건강행위이행 구조 모형)

  • Lee, Eun-Ha;Park, Jee-Won
    • Journal of Korean Academy of Fundamentals of Nursing
    • /
    • v.19 no.3
    • /
    • pp.343-352
    • /
    • 2012
  • Purpose: The purpose of this study was to develop and test a hypothetical model which explains health behavior adherence in elderly people with prehypertension. The model was based on self-determination theory (SDT). Methods: Data were collected from June 21 to July 15, 2010, using self-report questionnaires. The participants were 140 elders with prehypertension who lived in D Metropolitan City. Collected data were analyzed using PASW 18.0 for descriptive statistics and correlation analysis and AMOS 5.0 for covariance structure analysis. Results: It appeared that the overall fit index was good with a ${\chi}^2$ score of 13.23 (p<0.05), GFI of 0.97, AGFI of 0.79 and RMR of 0.28 in the modified model. The results revealed that significant main effects of both health provider's autonomy support and autonomous motivations were found on the measure of health behavior adherence. These factors explained 72% of variance in the participants, health behavior adherence. Conclusion: The overall findings may provide useful assistance in developing effective motivation-enhanced programs for health behavior adherence.

The Reliability and Validity of Family Burden Questionnaire (가족부담감 측정도구의 신뢰도와 타당도)

  • Oh Ka-Sil;Chae Sun-Mi;Cheon Na-Young
    • Child Health Nursing Research
    • /
    • v.8 no.3
    • /
    • pp.272-280
    • /
    • 2002
  • Purpose: This study was conducted to test the reliability and validity of Family Burden Questionnaire. Method: The subjects were 156 caregivers of children with acute or chronic disease. To test the reliability, internal consistency using Cronbach's α coefficient was analyzed, and factor analysis, known-group technique, and concurrent validity were utilized for validity test. Result: Cronbach's α coefficient of the tool was .89. Six factors were identified and explained 58.7% of the total variance. Through analysis using known-group technique, the difference of family burden between acute and chronic disease groups was statistically significant(t= -4.09, p<.001). Correlations with mood state, other family burden score by Family Burden Interview Schedule, quality of life, and health symptoms were also relatively high and statistically significant. Conclusion: Family Burden Questionnaire showed a relatively high validity and reliability to measure the burden of caregivers caring patients with various chronic conditions in Korea. For the further study, it may be reconsidered to identify the factor structure of the Family Burden Questionnaire with the various subjects from different age groups.

  • PDF

Influence on the Chemical Durability of $B_2O_3-SiO_2$ and $Al_2O_3-SiO_2$ Thin Films at the Addition of $P_2O_5$ ($P_2O_5$의 첨가가 $B_2O_3-SiO_2$$Al_2O_3-SiO_2$ 박막의 화학적내구성에 미치는 영향)

  • 황규석;김병훈;최석진
    • Journal of the Korean Ceramic Society
    • /
    • v.30 no.8
    • /
    • pp.615-622
    • /
    • 1993
  • In order to increase chemical durability of thin films in binary system B2O3-SiO2 and Al2O3-SiO2 on the slide glass by the dip-coating technique from TEOS(Tetraethyl Orthosilicate) and boric acid or aluminum nitrate, phosphoric acid(5~20mol%) was added, respectively. Corrosion of acid and alkali of samples treated with 1N, HCl, NaOH and distilled water at 10$0^{\circ}C$ for 15 minute, were measured IR transmittance and variance of transmittance at visible range. Surface structure of thin film was investigated with SEM and formation of crystal phase according to additiion of phosphoric acid was measrued with XRD. In Al2O3-SiO2 system, change of remarkable characteristic was not obtained at the addition of P2O5 but transmittance of thin film was decreased with addition of P2O5 in B2O3-SiO2 system.

  • PDF

Analysis of Fashion Sensibility on the Compound Fashion Image of Contemporary Fashion (현대패션에 나타난 복합패션이미지의 패션감성 분석)

  • Kim, Ji-Yeon;Lee, Kyoung-Hee
    • Fashion & Textile Research Journal
    • /
    • v.11 no.1
    • /
    • pp.6-13
    • /
    • 2009
  • The purpose of this study is to analyze the sensibility of the compound fashion image of contemporary fashion. The specific objectives were to analyze 1)the structure of meaning about fashion sensibility on 2)the difference of fashion sensibility by categories on 3)the difference of fashion sensibility by demographical aspects on 4)the consumer sensibility on the compound fashion image. For collecting data 55 stimulus and questionnaire which consisted of bi-polar 21 pairs adjective scale were contributed 675. The results were summarized as following : 1. Factors of fashion sensibility consist of estheticism, activeness, personality and feminity. And the meaning of fashion sensibility is young and personalty. 2. The man/woman and the past/present are highly estimated personality, the main/subcultural is activeness and the local/global is feminity of fashion sensibilities. 3. gender and age have high difference of the compound fashion image so they are important variance for fashion sensibilities. 4. Preference, purchase and quality are highly influenced by estheticism, pleasure is influenced by personality. The results of this study will be utilized in the clothing design for accepting customers' specific fashion sensibility about compound fashion image.

Reliability and Validity of the Korean Version of the Contraceptive Self-efficacy Scale: Focused on Women University Students (한국어판 피임 자기효능감(K-CSE) 도구의 신뢰도와 타당도: 여대생을 중심으로)

  • Kim, Kyeha;Cho, Euna
    • Women's Health Nursing
    • /
    • v.22 no.3
    • /
    • pp.151-161
    • /
    • 2016
  • Purpose: The purpose of this study was to develop and test the validity and reliability of the Korean version of the Contraceptive Self-efficacy (K-CSE) scale. Methods: The K-CSE scale was developed through forward-backward translation methods. Construct and criterion validity and internal consistency reliability were calculated using SPSS/WIN 21.0. Data were collected from 257 women students from two universities in G city, South Korea. Results: The factor structure of the K-CSE scale showed the cumulative variance as 62.9% in the factor analysis. Factor loading of 13 items on four subscales ranged from .47 to .88. Factors were named as 'initiative of contraceptive use', 'sexual assertiveness', 'refusal of sexual intercourse', and 'autonomic sexual behavior'. Criterion validity compared to the Sexual Autonomy Measurement (SAM) showed significant correlation. Cronbach's ${\alpha}$ for the reliability of each subscale were .50~.82 and .76 for the total scale. Conclusion: The findings of this study demonstrate that the K-CSE scale is a satisfactory valid and reliable scale. Therefore, the CSE scale can be useful in measuring contraceptive self-efficacy among women university students in Korea.

Performance Improvement of an Extended Kalman Filter Using Simplified Indirect Inference Method Fuzzy Logic (간편 간접추론 방식의 퍼지논리에 의한 확장 칼만필터의 성능 향상)

  • Chai, Chang-Hyun
    • Journal of the Korean Society of Manufacturing Process Engineers
    • /
    • v.15 no.2
    • /
    • pp.131-138
    • /
    • 2016
  • In order to improve the performance of an extended Kalman filter, a simplified indirect inference method (SIIM) fuzzy logic system (FLS) is proposed. The proposed FLS is composed of two fuzzy input variables, four fuzzy rules and one fuzzy output. Two normalized fuzzy input variables are the variance between the trace of a prior and a posterior covariance matrix, and the residual error of a Kalman algorithm. One fuzzy output variable is the weighting factor to adjust for the Kalman gain. There is no need to decide the number and the membership function of input variables, because we employ the normalized monotone increasing/decreasing function. The single parameter to be determined is the magnitude of a universe of discourse in the output variable. The structure of the proposed FLS is simple and easy to apply to various nonlinear state estimation problems. The simulation results show that the proposed FLS has strong adaptability to estimate the states of the incoming/outgoing moving objects, and outperforms the conventional extended Kalman filter algorithm by providing solutions that are more accurate.

Design of the menu on a multi-line display (Multi-line Display를 이용하는 제품의 메뉴 설계방안)

  • 유승무;한성호;곽지영
    • Journal of the Ergonomics Society of Korea
    • /
    • v.15 no.1
    • /
    • pp.1-14
    • /
    • 1996
  • Menu-driven interfaces are frequently employed for user interfaces on many electronic products. Due to space constraint, a single or multi-line display is popularly used to show menu items unlike the software interfaces. Single or multi-line display present 8 .approx. 21. characters on an LCD screen and the user selects items using a series of button pushes. Multi-line displays are different from the single-line ones in the following aspects. First, they can present multiple line of information at the same time. Second, they can present menu items in a various way compared to single-line ones. However, due to their space constraint multi-line displays have many limitations compared to ordinary displays which usually use 14" screens. Therefore, guidelines are necessary for designing efficent multi-line display menus interfaces. In this study, a human factors experiment was conducted to examine the effects of three design variables which might affect the usability of a multi-line display menus. Factors investigated include menu structure, number of lines on the display, and item presentation method. Usability of the multi-line display menus was measured quantitatively in terms of four different aspects: speed, accuracy, inefficiency and preference. The analysis of variance was used not only to analyze the main effects of the factors and their interactions but also to see the differences between the single-line display menus and multi-line display ones. A set of design guidelines drawn from this study can be applied to the design of the user interfaces of a various types of electronic consumer products.

  • PDF

A Study on Change of Logistics in the region of Seoul, Incheon, Kyunggi (물류예측모형에 관한 연구 -수도권 물동량 예측을 중심으로-)

  • Roh Kyung-Ho
    • Management & Information Systems Review
    • /
    • v.7
    • /
    • pp.427-450
    • /
    • 2001
  • This research suggests the estimation methodology of Logistics. This paper elucidates the main problems associated with estimation in the regression model. We review the methods for estimating the parameters in the model and introduce a modified procedure in which all models are fitted and combined to construct a combination of estimates. The resulting estimators are found to be as efficient as the maximum likelihood (ML) estimators in various cases. Our method requires more computations but has an advantage for large data sets. Also, it enables to detect particular features in the data structure. Examples of real data are used to illustrate the properties of the estimators. The backgrounds of estimation of logistic regression model is the increasing logistic environment importance today. In the first phase, we conduct an exploratory study to discuss 9 independent variables. In the second phase, we try to find the fittest logistic regression model. In the third phase, we calculate the logistic estimation using logistic regression model. The parameters of logistic regression model were estimated using ordinary least squares regression. The standard assumptions of OLS estimation were tested. The calculated value of the F-statistics for the logistic regression model is significant at the 5% level. The logistic regression model also explains a significant amount of variance in the dependent variable. The parameter estimates of the logistic regression model with t-statistics in parentheses are presented in Table. The object of this paper is to find the best logistic regression model to estimate the comparative accurate logistics.

  • PDF