• Wind and Structures
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• v.33 no.6
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• pp.423-435
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• 2021

Although existing algorithms can predict wind speed using historical observation data, for engineering feasibility, most use moment methods and probability density functions to estimate fitted parameters. However, extreme wind speed prediction accuracy for long-term return periods is not always dependent on how the optimized frequency distribution curves are obtained; long-term return periods emphasize general distribution effects rather than marginal distributions, which are closely related to potential extreme values. Moreover, there are different wind speed parent sample types; how to theoretically select the proper extreme value distribution is uncertain. The influence of different sampling time intervals has not been evaluated in the fitting process. To overcome these shortcomings, updated steps are introduced, involving parameter sensitivity analysis for different sampling time intervals. The extreme value prediction accuracy of unknown parent samples is also discussed. Probability analysis of mean wind is combined with estimation of the probability plot correlation coefficient and the maximum likelihood method; an iterative estimation algorithm is proposed. With the updated steps and comparison using a Monte Carlo simulation, a fitting policy suitable for different parent distributions is proposed; its feasibility is demonstrated in extreme wind speed evaluations at Longhua and Chuansha meteorological stations in Shanghai, China.

• Journal of information and communication convergence engineering
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• v.10 no.1
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• pp.45-52
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• 2012

Thedenoising of a natural image corrupted by Gaussian noise is a long established problem in signal or image processing. Today the research is focus on the wavelet domain, especially using the wavelet threshold method. In this paper, a waveletbased image denoising modified adaptive thresholding method is proposed. The proposed method computes thethreshold adaptively based on the scale level and adaptively estimates wavelet coefficients by using a modified thresholding function that considers the dependency between the parent coefficient and child coefficient and the soft thresholding function at different scales. Experimental results show that the proposed method provides high peak signal-to-noise ratio results and preserves the detailed information of the original image well, resulting in a superior quality image.

• Nuclear Engineering and Technology
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• v.49 no.5
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• pp.1019-1030
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• 2017

Diffusion is a crucial mechanism that regulates the migration of radioactive nuclides. In this study, an innovative numerical method was developed to simultaneously calculate the diffusion coefficient of both parent and, afterward, series daughter nuclides in a sequentially reactive through-diffusion model. Two constructed scenarios, a serial reaction (RN_1 ${\rightarrow}$ RN_2 ${\rightarrow}$ RN_3) and a parallel reaction (RN_1 ${\rightarrow}$ RN_2A + RN_2B), were proposed and calculated for verification. First, the accuracy of the proposed three-member reaction equations was validated using several default numerical experiments. Second, by applying the validated numerical experimental concentration variation data, the as-determined diffusion coefficient of the product nuclide was observed to be identical to the default data. The results demonstrate the validity of the proposed method. The significance of the proposed numerical method will be particularly powerful in determining the diffusion coefficients of systems with extremely thin specimens, long periods of diffusion time, and parent nuclides with fast decay constants.

• Journal of Korean Public Health Nursing
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• v.31 no.2
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• pp.365-375
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• 2017

Purpose: This study was conducted as a descriptive research to identify relationships among parent-adolescent communication, self-efficacy and nursing professionalism in nursing students. Methods: The participants were 106 nursing college students in Chungchung Province in Korea. Data were collected from December 1 to 31, 2016, analyzed by descriptive statistics, t-tests, ANOVA, Pearson's correlation coefficient, and multiple regression using IBM SPSS statistics version 21. Results: Parent-adolescent communication was positively correlated with self-efficacy (r=.44, p<.001), and nursing professionalism (r=.30, p=.002), while self-efficacy was positively correlated with nursing professionalism (r=.42, p<.001). Parent-adolescent communication and nursing professionalism explained 29.0% of self-efficacy. Parent -adolescent communication and self-efficacy explained 19.5% of nursing professionalism. Conclusion: The results of this study suggest an empowerment program of parent-adolescent communication should be developed to provide valuable baseline data to counsel students who are developing self-efficacy and nursing professionalism in nursing curriculum.

• Journal of Distribution Science
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• v.17 no.2
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• pp.77-89
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• 2019

Purpose - This study presents the relationships between parent brand-self image congruence, parent brand -functional congruity, perceived fit between parent brand and extension product, and consumer's attitude toward extension product using the structural equation model. As for preceding concepts having a direct effect on consumer's attitude toward brand extension, the study focuses on parent brand-self image congruence and parent brand-functional congruity. It also looks at the effect of parent brand-self image congruence and parent brand-functional congruity on the consumer's attitude toward extension product and identifies if the perceived fit between parent brand and extension product is a concept playing a mediating role between parent brand-self image congruence or parent brand-functional congruity and consumer's attitude toward brand extension product. Research design, data, and Methodology - SPSS for Windows 18.0 and AMOS 18.0 were used for data analysis. Then, the Cronbach's α coefficient was obtained using SPSS for Windows 18.0 to measure reliability. In addition, the convergence and discriminative measures of the measured items were statistically verified using AMOS 18.0. Finally, we have validated a path model and a parameter model in which brand personality-self-matched attitude toward brand extension. Results - Studies have shown that the impact of parent brand-self image consistency and parent brand-functional consistency on the attitude of extended products was positive. Perceived fit between parent brand and extension products has been shown to play a role of intermediary between parent brand-self image congruence and consumer attitudes to extended products. However, perceived fit between parent brand and extension products did not play a role as intermediary between the parent brand-functional congruity and the attitude toward the extended product. Finally, in relation to the causal relationship between parent brand-congruity (self image/functionality) and attitudes to extended products. The effect of parent brand-functional coherency on attitudes toward extended products was found to be greater in groups with higher involvement than in those with lower involvement. Conclusions - Although few studies have been done on what variables mediated when parent brand-self image consistency and parent brand-functional coherency affect consumer attitude, this paper is significant in finding whether perceived fitness between the parent brand-congruity and the extension product is mediated.

• Journal of the Korean Home Economics Association
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• v.24 no.1
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• pp.129-138
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• 1986

The purpose of this study is to investigate the child's preference attitude for one parent and to analyze the difference in the four variables(sex, age, birth order and maternal employment) and the factors influencing it. To meet this purpose, three kinds of questionnaire for child (school-age/late adolescence) and his parents were used. The data were obtained through 136 pairs(parents and child) and analyzed by chisquare test and Guttman's lambda. The results of this test are summerized as follows. 1. The majority of children prefer mother to father and especially adolescent daughters prefer mother more than sons. 2. The majority of parents answered that their child would prefer mother to father and the correlation coefficient between mother's answer and fathers is .53. But child's actual preference is no related with parent's awareness of being preferred. 3. The majority of parent's answer were consistent with child's preference but the correlation coefficients are very low from the analysis of factors influencing the child's preference. Therefore parents and child must have more communication, concern and expression of love for mutual consistence.

• Journal of Korean Academy of Nursing
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• v.38 no.1
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• pp.55-63
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• 2008

Purpose: The purpose of this study was to examine the relationship between eating disorders and parent-adolescent communication in middle school students. Method: There were 267 adolescents taken as participants from two middle schools in rural areas. Data were collected from June to July 2005, using the Eating Disorder Inventory-2 questionnaire (23 items) and Parent-Adolescent Communication Inventory (10 items for open family communication, 10 items for problem in family communication). The SPSS Win version 12.0 was used for descriptive analysis, t-test, and partial correlation coefficient. Result: The mean score on the eating disorder was 2.74 (range: 1-6). Meanwhile, the mean scores on the parent-adolescent communication was 3.37 (range: 1-5). There were significant differences in eating disorders according to gender, age, negative perception of the participant's body weight, family's perception of obesity, diet experiences, and BMI. Eating disorders showed a significant negative correlation with parent-adolescent communication. Conclusion: In this study, there was a significant negative correlation between eating disorders and parent-adolescent communication. In order to prevent an eating disorder, education and training to enhance communication skills should be provided to adolescents and their parents as well.

• Korean Parent-Child Health Journal
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• v.13 no.1
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• pp.35-43
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• 2010

Purpose: This study was a descriptive research to provide fundamental data in ensuring a high quality of nursing service needed by children's parent according to perception of uncertainty and care satisfaction of them between pediatric outpatient department and emergency room. Methods: For this study, 192 children's parents were questioned in a general hospital located in Busan from August 1 to 31. 2009. The collected data were scored by use of frequencies, $x^2$ test, t-test, AONVA, Pearson's correlation coefficient via SPSS/WIN 17.0. Results: With the compare of characteristics related to children's parents visiting emergency room and pediatric outpatient department, there were statistically significant difference in relation and age of parent, main caregiver, cause of arrival, and waiting time from arrival to procedure. The perception of uncertainty for parent in the emergency room showed significant difference to outpatient department. In nursing service, the highest score was category of professional skill and technic. In addition, overall parents' perceptions on providing information showed lower than any other nursing service. Last but not least, a significant correlation indicated between the perception of uncertainty and satisfaction of nursing service. Conclusion: Efforts to improve parent satisfaction for nursing service are needed to decrease their perception of uncertainty. Providing information and communication by nurses are necessary to improve quality of nursing service.

• Child Health Nursing Research
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• v.24 no.1
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• pp.9-17
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• 2018

Purpose: The purpose of this descriptive survey study was to characterize the relationship between clinical decision-making and job satisfaction among pediatric nurses and to elucidate the mediating effects of the nurse-parent partnership on that relationship. Methods: The subjects of the study were 174 nurses who had worked in a pediatric ward in a university hospital, general hospital, or children's hospital. Data were collected from June 20, 2016 to August 10, 2016 and analysed using descriptive statistics, the t-test, analysis of variance, the Pearson correlation coefficient, and three-step mediated regression analysis in SPSS version 22.0 for Windows. Results: The nurse-parent partnership had significant effects on clinical decision-making and job satisfaction, with an explanatory power of 19% and 26%, respectively. The nurse-parent partnership had a partial mediating effect on the relationship between clinical decision-making and job satisfaction (Sobel test: Z=4.31, p<.001). Conclusion: The nurse-parent partnership had a partial mediating effect on the relationship between clinical decision-making and job satisfaction among pediatric nurses. Therefore, in order to improve the job satisfaction of pediatric nurses, it is necessary to develop effective educational programs and strategies to address their clinical decision-making and their experiences of the nurse-parent partnership.

• The Journal of Korean Academic Society of Nursing Education
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• v.15 no.2
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• pp.302-310
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• 2009

Purpose: The purpose of this study was to examine the attachment of middle school students to their parents, their self-control, problem behavior, and the mediating effect of self-control on the relationship between parent-adolescent attachment and problem behavior. Method: Data were collected by questionnaires from 467 students in middle schools from May 19 to 30, 2008. Data were analyzed by Pearson's correlation coefficient and multiple regression procedures. Result: 1. The students investigated received a mean score of 2.76 and 3.01 on attachment for fathers and mothers respectively. They received a mean score of 3.32 on self-control. The most prevalent self-perceived problem behavior among the students was going home late at night without permission followed by bullying friends for no reason and drinking. 2. Among parent-adolescent attachment, self-control and problem behavior, parent-adolescent attachment had a positive correlation to self-control and a negative correlation to problem behavior. 3. Self-control had a mediating effect on the relationship between parent-adolescent attachment and problem behavior. Conclusion: Parent-adolescent attachment influenced problem behavior through the mediating effect of self-control, and is expected to lay the foundation for the prevention of adolescent problem behavior.