This paper is concerned with the design of four control charts for real-time monitoring of the continuous flow processes. Control charts for both uncorrelated data and correlated data are designed using the Kalman filtering techinque. The relative performance between the designed control charts and traditional control charts is evaluated in terms of the Average Run Length(ARL). Results show that the Adaptive EWMA control charts designed for uncorrelated data has better performance when process mean is shifted, while the residual control charts for correlated data has better performance when process is in control.
The purpose of this study was to empirically examine the effects of salespeople's self-determination, shared value; and communication satisfaction on their job satisfaction, organizational commitment, and turnover intention in a fashion company. Questionnaires were administered to 475 salespeople who worked in fashion shop at the time of the study. The data was analyzed via factor analysis, correlation analysis, and a structural equation model. The results indicated that self-determination was extracted as autonomy, competence, and relatedness. Only the relatedness of self-determination factors was positively correlated with formal and informal communication satisfaction. In addition, recognizing hared value was positively correlated with formal and informal communication satisfaction; whereas, the practice of shared value was positively correlated with formal, but not informal communication satisfaction. Formal communication satisfaction was significantly correlated with job satisfaction and organizational commitment. Conversely, informal communication satisfaction was significantly correlated with job satisfaction, but was not related to organizational commitment. Finally, job satisfaction was significantly correlated with organizational commitment and negatively correlated with turnover intention. Moreover, organizational commitment was negatively correlated with turnover intention. The implications of this research for human resources management within fashion companies are discussed in the concluding section of this paper.
This study was conducted to investigate and to compare the health status of urban and rural elderly in Korea using the following factors: 1) the number of self-reported health problems 2) a self-rating score for health status 3) the number of diagnosed diseases 4) ADL, social health status by IADL and the psychological health status by Life Satisfaction scale developed by Wood and others. The study subjects were the elderly who lived in Pusan(N=150) as an urban area and Kyeungnam(N=300) province as a rural area. The study subjects were sampled at random and the data were collected by trained interviewers from Feb. 1 to Feb. 14, 1995. the data was analyzed in SPSS. The results can be summarized as follows : 1. According to the sociodemographic characteristics of the subjects, the urban elderly group was significantly higher in extended family groups and in practicing regular execise than the rural elderly: and the rural elderly group was higher in having spouses and occupations than the urban group. 2. Concerning health status, the numbers of self-reported health problems(eye problems, back pains, headaches, dental problems, arthritis) and number of diagnosed diseases(hypertension, heart problems, diabetes mellitus, neuralgia, arthritis) were significantly were higher higher in rural areas: the self - rating scores for health status and life satisfaction were higher urban areas. ADL and IADL were similar in both the rural and urban elderly. 3. The correlations were the following: Self-reported health problems and self-rating for health status were significantly correlated negatively(r=-.039, p=.000), but self-reported health problems and the number of diagnosed diseases were significantly positively correlated(r=0. 30, p=.000). IADL and health problems were negatively correlated(r=-0.16, p=.000), but IADL and ADL were significantly positively correlated (r=0.49, p=.000). Life satisfaction and self-rating scores for health status were significantly positively correlated(r=0.26, p=.000).
Purpose: The purpose of this study was to describe the subjective happiness and satisfaction with life of children with type 1 diabetes and explore related factors. Methods: A descriptive cross-sectional study design was used and the study was conducted with children at a diabetes camp. Data were collected using a self-report questionnaire to explore positive and negative psychological factors. The questionnaire included Subjective Happiness Scale, Satisfaction with Life Scale, Perceived Stress Scale and the Center for Epidemiological Studies Depression Scale for Children (CES-DC), Multidimensional Scale of Perceived Social Support, and General Self-Efficacy Scale. Results: Data from 15 children were used for data analysis. The correlational analysis results showed that subjective happiness was positively correlated satisfaction with life, social support, and self-efficacy, and was negatively correlated with perceived stress. Satisfaction with life was positively correlated social support, and was negatively correlated with perceived stress. Conclusion: Results indicate that the positive psychology factors were closely related with social support and self-efficacy and may alleviate perceived stress and depressive feelings. Therefore, researchers and clinicians should include positive psychological factors in their health management model for children with chronic illness.
Kim, Boom-Soo;Kang, Tae-Yoon;Chun, Sang-Hyun;Son, Seung-Nam;Hong, Sang-Jeen
한국진공학회:학술대회논문집
/
한국진공학회 2009년도 제38회 동계학술대회 초록집
/
pp.464-464
/
2010
A few years ago, for maintaining high stability and production yield of production equipment in a semiconductor fab, on-line monitoring of wafers is required, so that semiconductor manufacturers are investigating a software based process controlling scheme known as virtual metrology (VM). As semiconductor technology develops, the cost of fabrication tool/facility has reached its budget limit, and reducing metrology cost can obviously help to keep semiconductor manufacturing cost. By virtue of prediction, VM enables wafer-level control (or even down to site level), reduces within-lot variability, and increases process capability, $C_{pk}$. In this research, we have practiced VM on $SiO_2$ etch rate with optical emission spectroscopy(OES) data acquired in-situ while the process parameters are simultaneously correlated. To build process model of $SiO_2$ via, we first performed a series of etch runs according to the statistically designed experiment, called design of experiments (DOE). OES data are automatically logged with etch rate, and some OES spectra that correlated with $SiO_2$ etch rate is selected. Once the feature of OES data is selected, the preprocessed OES spectra is then used for in-situ sensor based VM modeling. ICP-RIE using 葰.56MHz, manufactured by Plasmart, Ltd. is employed in this experiment, and single fiber-optic attached for in-situ OES data acquisition. Before applying statistical feature selection, empirical feature selection of OES data is initially performed in order not to fall in a statistical misleading, which causes from random noise or large variation of insignificantly correlated responses with process itself. The accuracy of the proposed VM is still need to be developed in order to successfully replace the existing metrology, but it is no doubt that VM can support engineering decision of "go or not go" in the consecutive processing step.
Purpose: The purpose of this study was to examine the relationships among sexual function, sexual stress, and quality of life in middle aged women patients with diabetes mellitus. Methods: Data were collected through questionnaires distributed to 154 middle aged women patient with diabetes mellitus in one hospital. Results: The mean sexual function score was $12.99{\pm}9.11$. There were statistically significant differences in sexual function according to age, level of education, employment status, time of being diagnosed with diabetes mellitus, number of complications, self-monitoring of blood glucose, menopausal status, and level of glycosylated hemoglobin. The mean sexual stress score was $26.99{\pm}16.88$. The score of quality of life was $79.12{\pm}14.30$. There were statistically significant differences in quality of life according to level of education. Sexual function was negatively correlated with sexual stress (r=-.46 p<.001) and positively correlated with quality of life (r=.32, p<.001), while sexual stress was negatively correlated with quality of life (r=-.36 p<.001). Conclusion: Higher sexual dysfunction in middle aged women patients with diabetes mellitus was correlated with lower sexual stress and improved quality of life, while lower sexual stress was correlated with improved quality of life.
The purpose of this study is to find out the relationship between needs and factors of clothing Selection. 400 women students from 4 universities and colleges in Seoul were selected and tested. And Hwang Jeongkyu's Needs inventory test sheets for need inventory test and the questionnaire based on Lee Eunju's study for factors of clothing selection were given to the sample. The test data was computerized to get the relationship. The results are as follows: (I) Behavior of clothing selection according to expression of individuality correlated significantly with achievement, aggression, dominance, emotionality, exhibitionism, sex, and autonomy at the .01 level. (2) Behavior of clothing selection according to utility correlated significantly with abasement, and affiliation at the .01 level. and with emotionality at the .05 level, (3) Behavior of clothing selection according to economy correlated significantly with abasement, affiliation, dominance, emotionality, and exhibitionism at the .05 level, and with achievement at the .01 level. (4) Behavior of clothing selection according to modesty correlated significantly with abasement, exhibitionism, and sex at the .01 level. (5) Behavior of clothing selection according to conformity correlated significantly with abasement, emotionality, and autonomy at the .01 level, and with dominance at the .05 level.
Gibbs sampling algorithms were implemented to the multi-trait threshold animal models with any combinations of multiple binary, ordered categorical, and linear traits and investigate the amount of bias on these models with two kinds of parameterization and algorithms for generating underlying liabilities. Statistical models which included additive genetic and residual effects as random and contemporary group effects as fixed were considered on the models using simulated data. The fully conditional posterior means of heritabilities and genetic (residual) correlations were calculated from 1,000 samples retained every 10th samples after 15,000 samples discarded as "burn-in" period. Under the models considered, several combinations of three traits with binary, multiple ordered categories, and continuous were analyzed. Five replicates were carried out. Estimates for heritabilities and genetic (residual) correlations as the posterior means were unbiased when underlying liabilities for a categorical trait were generated given by underlying liabilities of the other traits and threshold estimates were rescaled. Otherwise, when parameterizing threshold of zero and residual variance of one for binary traits, heritability estimates were inflated 7-10% upward. Genetic correlation estimates were biased upward if positively correlated and downward if negatively correlated when underling liabilities were generated without accounting for correlated traits on prior information. Residual correlation estimates were, consequently, much biased downward if positively correlated and upward if negatively correlated in that case. The more categorical trait had categories, the better mixing rate was shown.
The purpose of this study was to examine the relationship among romantic attachment, self-esteem, and love attitudes as perceived by college students(male:149, female:202) in the Seoul and Gyeonggi areas. All respondents submitted their answers on a self-report questionnaire. The measurement instruments were Brennan, Clark, & Shaver'(1998) 'Multi-item Measure of Adult Romantic Attachment', Rosenberg'(1979) Self-esteem Scale, and Hendrick, Hendrick, & Dicke'(1998) 'Love Attitudes Scale'. The data were analyzed with descriptive statistics, t-tests, Pearson's correlations, and multiple regressions. Major results of this study were as follows: (a) In romantic attachment and self-esteem, sex was not a significant factor. In the love attitudes, sex was significant, and men showed higher levels of Eros and Agape than women. Women showed higher levels of Plasma than men. (b) Romantic attachment(avoidance and anxiety dimensions) were negatively correlated to self-esteem. (c) The avoidance dimension of romantic attachment was negatively correlated to Eros, Mania, and Agape and positively Ludus. The anxiety dimension of romantic attachment was positively correlated to Ludus, Plasma, Mania, and Agape. (d) Self-esteem was negatively correlated to Mania and positively correlated to Eros and Pragma.
Purpose: This study aimed to evaluate the relationships among quality of life, caregiver depression levels, and disease severity, especially motor function, in children with cerebral palsy. Methods: Data were collected through questionnaires using survey and interview from 80 caregivers of children with cerebral palsy. The caregivers' quality of life was measured using medical outcomes study 36-item short form health survey, and level of depression was scored using the beck depression inventory. In addition, children's motor function was evaluated using gross motor function measure-88 and functional independence measure scores. Results: Among 8 domains of medical outcomes study 36-item short form health survey, "physical functioning," "physical role functioning," "mental health," and "bodily pain" domains were significantly correlated to "total" percentage scores of gross motor function measure-88. In addition, "mental health" and "bodily pain" domains were correlated to each sub-dimension, including "lying and rolling," "sitting," "crawling and kneeling," "standing," and "walking, running, and jumping." Similarly, the "running" and "jumping" dimensions including motor function measures correlated with "transfer," "locomotion," and "motor subtotal" of functional independence measure scores. The beck depression inventory scores were negatively correlated to "lying and rolling," "sitting," "crawling and kneeling," and the "total" percentage scores of gross motor function measure-88. The beck depression inventory scores were negatively correlated to "sphincter control," "communication," "social cognition," "cognitive subtotal," and "total" functional independence measure scores. Conclusion: It is necessary to consider the quality of life and emotional problems of caregivers of CP children and support them both physically and psychologically with comprehensive rehabilitation.
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