• Journal of Computational Design and Engineering
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• 제1권4호
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• pp.256-265
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• 2014

Energy efficiency is an essential consideration in sustainable manufacturing. This study presents the car fender-based injection molding process optimization that aims to resolve the trade-off between energy consumption and product quality at the same time in which process parameters are optimized variables. The process is specially optimized by applying response surface methodology and using non-dominated sorting genetic algorithm II (NSGA II) in order to resolve multi-object optimization problems. To reduce computational cost and time in the problem-solving procedure, the combination of CAE-integration tools is employed. Based on the Pareto diagram, an appropriate solution is derived out to obtain optimal parameters. The optimization results show that the proposed approach can help effectively engineers in identifying optimal process parameters and achieving competitive advantages of energy consumption and product quality. In addition, the engineering analysis that can be employed to conduct holistic optimization of the injection molding process in order to increase energy efficiency and product quality was also mentioned in this paper.

• 성인간호학회지
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• 제24권4호
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• pp.428-437
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• 2012

Purpose: The purpose of the study was to develop a predictive model of Health-related Quality of Life (HRQoL) for Korean Goose daddies - they live alone in Korea to support their families who moved overseas for children's education. Methods: Data were collected from 151 goose daddies from May to June of 2011 by using the structured self-reported questionnaires. The collected data were analyzed using SAS program (version 9.2) and SAS CALIS procedure. Results: Frequency of exercise, monthly income, depression, perceived physical health, and perceived mental health had direct effects on HRQoL and Depression was the variable accounting for major total effect on HRQoL. It could be explained that predictor variables accounted for 76% of the health-related quality of life. Conclusion: In order to improve Goose daddies' HRQoL, predictive factors, such as age, exercise, nutritional status, monthly income, depression, perceived physical health, and perceived mental health, should be considered. Furthermore, should the need of the exercise and diet program, early detection of depression and the treatment for it be emphasized. Also, there is a need to establish institutional structures to support goose daddies in adversity.

• 한국의류산업학회지
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• 제5권1호
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• pp.77-81
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• 2003

The purpose of this study was to investigate the effect of multi-functional fabric on EEG and growth hormone (GH) during sleep and quality of sleep with the 9 young female athletes. The subjects participated in separated experimental procedure; sleeping in multi-functional fabric wear (experimental group) and cotton wear (control group) for 450min. During the night (22:00-05:30), we recorded the changes of nocturnal polysomnographic sleep recording and GH were measured every 60min. The results show that there are significant differences in percentage of stage 1, 2 and slow wave sleep (SWS) between two groups(S1, p<.05; S2, SWS, p<.01). The SWS percentage of experimental group is 1.89 times higher than control group. The changes of GH secretion varied depending on two experimental procedures. The peak of GH secretion in experimental group is more than controls by 2.4time (p<.001). The quality of sleep in experimetal group is significantly higher than control (p<.01). These results suggest muti-functional fabric wear is effective in inducing the deep sleep and increasing GH and quality of sleep.

• 대한기계학회논문집A
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• 제30권6호
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• pp.728-733
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• 2006

The reduction of the Vehicle interior noise has been the main interest of NVH engineers. The driver's perception on the vehicle noise is affected largely by psychoacoustic characteristic of the noise as well as the SPL. In particular, the HVAC sound among the vehicle interior noise has been reflected sensitively in the side of psychology. In previous study, we have developed to verify identification of source for the vehicle HVAC system through multiple-dimensional spectral analysis. Also we carried out objective assessments on the vehicle HVAC noises and subjective assessments have been already performed with 30 subjects. In this study, the linear regression models were obtained for the subjective evaluation and the sound quality metrics. The regression procedure also allows you to produce diagnostic statistics to evaluate the regression estimates including appropriation and accuracy. Appropriation of regression model is necessary to $R^2$ value and F-value. And testing for regression model is necessary to independence, homoscedesticity and normality. Also we selected optimum layout of damping material using Taguchi method. As a result of application, sound quality is improved more quietly, powerfully, even though costly, and smoothly.

• 한국의학물리학회:학술대회논문집
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• 한국의학물리학회 2002년도 Proceedings
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• pp.305-308
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• 2002

More complex radiotherapy techniques using multi leaf collimation(MLC) such as intensity-modulated radiation therapy(IMRT) has been increasing the significance of verification of leaf position and motion. Due to the reliability and robustness, quality assurance(QA) of MLC is usually performed with portal films. However, the advantage of ease of use and capability of providing digital data of electronic portal imaging devices(EPIDs) have attracted many attentions as alternatives of films for routine quality assurance in spite of the concerns about their clinical feasibility, efficacy, and the cost to benefit ratio. In our work, the method of routine QA of MLC using electronic portal imaging(EPI) was developed. The verification of availability of EPI images for routine QA was performed by comparison with those of the portal films which were simultaneously obtained when radiation was delivered and known prescription input to MLC controller. Specially designed test patterns of dynamic MLC were applied to image acquisition. Quantitative off-line analysis using edge detection algorithm enhanced the verification procedure in addition to on-line qualitative visual assessment. In conclusion, the EPI is available enough for routine QA with the accuracy of portal films.

• 동아시아식생활학회지
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• 제19권5호
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• pp.803-811
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• 2009

Brand equity has been treated conspicuously since the late 1980s. The purpose of this study was to develop a model brand equity model by examining the structural relationship among dimensions (brand loyalty, perceived quality, brand association/image, brand awareness) of brand equity, to compare differences between local brands and multinational brands. For this study, a total of 540 survey questionnaires were analyzed the results. All results were conducted using the frequency, factor analysis, regression and t-test procedure of the SPSS 12.0 package. The t-test revealed that consumers expose that recognize foreign brand constituents as better than domestic brand constituents. The determinant factors of brand equity were summarized as brand loyalty, perceived quality, brand association/ image, and brand awareness. Among these, four factors had a significant affected on the level of brand equity. Specifically, there was a difference between domestic brand and foreign brands. Among domestic brands the level of brand equity was significantly affected by brand loyalty, brand association/image, and brand awareness. However foreign brands were significantly affected by brand loyalty and perceived quality.

• 한국정밀공학회지
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• 제17권9호
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• pp.210-221
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• 2000

Plastic mold designers and frequently faced with optimizing multi-quality issues in injection molded parts. These issues are usually in conflict with each other and thus tradeoff needs to be made to reach a final compromised solution. in this study an automated injection molding design methodology has been developed to optimize multi-quality characteristics of injection molded parts. The features of the proposed methodology are as follows : first utility theory is applied to transform the original multi-objective problem into single-objective problem. Second is an implementation of a direct search-based injection molding optimization procedure with automated consideration of robustness against process variation. The modified complex method is used as a general optimization tool in this study. The developed methodology was applied to an actual mold design and the results showed that the methodology was useful through the CAE simulation using a commercial injection molding software package. Applied to production this study will be of immense value to companies in reducing the product development time and enhancing the product quality.

• 한국중재학회지:중재연구
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• 제15권3호
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• pp.27-54
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• 2005

In the era of globalization firms must operate all useable resources into marketing activities to survive on the unlimited competition. However, firms face many kinds of disputes with counterparts because of aggressive marketing activities. There are two ways of solving these disputes : litigation and arbitration. As compared to litigation, arbitration is more popular because of such merits as the enforcement of arbitral award in foreign countries, the single trial system, the settlement by specialists, and the confidential proceedings. This paper examines trade firms' perception on the arbitration system and the effects of the advantages of arbitration and quality of arbitrators on the outcome of arbitration. The results show that the advantages of arbitration and quality of arbitrators influenced positively on the outcome of arbitration, but influenced negatively on the closed-door of arbitration procedures and a fair procedure of arbitrator. Though this paper has several limitations, this paper may contribute to figure out the relationship between arbitration merits and quality of arbitrator and outcomes as a first empirical paper and to suggest future research method and direction.

• 종양간호연구
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• 제3권1호
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• pp.45-55
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• 2003

Self-help group program is an elective procedure intended to improve the quality of life of women undergoing mastectomy. The purpose of this study is explore effects of the self-help group program for QOL after mastectomy. 40 Women who had undergone mastectomies between stagel to 3 were recruited. Subjects of experimental group attended the self-help group for 4 weeks. Data were collected by self-reporting questionnaire. QOL was assessed using the Quality of Life Scale(QLS) translated by Kwon(1990). As a results, no significant differences were found between experimental and control group in changes of QOL. But, experimental group increased QOL score. In conclusions, when the self-help group program is provided to the patients with breast cancer, it can be helpful for promoting QOL and emotional support, even no statistical difference. For the further study, repeated researched with appropriate duration of intervention is suggested. Significant anxiety about their disease and fear of recurrence will be persisted despite intervention.

• Asian Journal of Business Environment
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• 제7권1호
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• pp.31-36
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• 2017

Purpose - The purpose of the study was to develop a reliable measurement tool for the evaluation of TQM application in Greek education settings and to examine the factors that determine quality of education. Research design, data, and methodology - A questionnaire commencing from the questions included in the Application Guide of Common Assessment Framework was used for research purposes. Each item was scored on a 5point Likert scale - to a sample of 112 educators (55 men, 57 women), all teachers working in public primary education schools. Factor analysis resulted in a questionnaire of 43 items consisting of five factors, teacher satisfaction, school management and operation, motivation, effectiveness of public school leadership and finance management. Results - Results revealed a positive correlation among all factors. Reliability results using Cronbach's α was high (a=.961) for all factors of the questionnaire ranging from α=.930 (for motivation) to α=.797 (for financial management). Additionally, ICC procedure revealed high values for the above mentioned factors. Conclusions - The study resulted in the construction of a reliable questionnaire focused exclusively on TQM that can be used in future studies using larger samples in different areas so as to draw useful conclusions regarding TQM application in Greek education settings and further identify the factors determining quality in education.