• Title/Summary/Keyword: reliability factors

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A Study on the Effects of Innovation Characteristics and Quality of Appliance Systems on Intention to Adopt (어플라이언스 시스템의 혁신특성과 품질이 채택의도에 미치는 영향에 관한 연구)

  • Yoo, Eungjoon;Kim, Yonghee;Park, Youngju;Choi, Jeongil
    • Journal of Korean Society for Quality Management
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    • v.43 no.3
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    • pp.421-438
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    • 2015
  • Purpose: The purpose of this study was to grasp the level of effects innovative features and quality of the appliance system on organizational performance and ultimately analyze the willingness of the IT staff to adopt an appliance system. Methods: The survey was conducted on 350 vendors' clients and partners who currently use an appliance system from March to May 2014. A total of 331 effective questionnaires were collected and analyzed using PASW18 and SmartPLS. Results: The results show that relative advantage, facilitating condition and trialability and quality factors all had an effect on organizational performance expectations. Further, when an appliance system is adopted, it was shown that cost and reliability emphasized by a vendor did not produce any significant effects on organizational performance expectations. Conclusion: This study is significant as it is the first to combine such models as Innovation Diffusion Theory, Information Systems Success Model, and Unified Theory of Acceptance and Use of Technology with a new external variable. In addition, it illustrated how variables affect the adoption of an appliance system such as a new innovation system.

A Study on the Initial Bonding Strength of Solder Ball and Au Diffusion at Micro Ball Grid Array Package (${\mu}BGA$ 패키지에서 솔더 볼의 초기 접합강도와 금 확산에 관한 연구)

  • Kim, Kyung-Seob;Lee, Suk;Kim, Heon-Hee;Yoon, Jun-Ho
    • Journal of Welding and Joining
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    • v.19 no.3
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    • pp.311-316
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    • 2001
  • This paper presents that the affecting factors to the solderability and initial reliability. It is the factor that the coefficient of thermal expansion between package and PCB(Printed Circuit Board), the quantity of solder paste and reflow condition, and Au thickness of the solder ball pad on polyimide tape. As the reflow soldering condition for 48 ${\mu}BGA$ is changed, it is estimated that the quantity of Au diffusion at eutectic Sn-Pb solder surface and initial bonding strength of eutectic Sn-Pb solder and lead free solder. It is the result that quantitative measurement of Au diffusion quantity is difficult, but the shear strength of eutectic Sn-Pb solder joint is 842 mN at first reflow and increases 879 mN at third reflow. The major failure mode in solder is judged solder fracture. So, Au diffusion quantity is more affected by reflow temperature than by the reflow times.

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The Congruity between Brand Personality and Customer-perceived Self-Image in a Family Restaurant (패밀리레스토랑의 브랜드개성과 고객이 인식하는 자아이미지의 일치성에 관한 연구)

  • Jung, Hyo-Sun;Yoon, Hye-Hyun
    • Korean journal of food and cookery science
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    • v.26 no.6
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    • pp.717-726
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    • 2010
  • The purpose of this study was to measure customers' perception of brand personality and self-image of family restaurants and compare the congruity between brand personality and customer-perceived self-image according to customers' general characteristics. Self-administered questionnaires were completed by 377 customers, and data were analyzed by frequency, chi-square, paired samples t-test, factor, reliability, cluster, and discriminant analyses. Results of the study were as follows: factor analysis of brand personality and customer-perceived self-image as 5 factors, i.e., sincerity (10 variables), excitement (8 variables), competence (7 variables), sophistication (6 variables), and ruggedness(5 variables). As a result, the averages of brand personality and self-image of family restaurants were $2.93{\pm}0.39$ and $3.24{\pm}0.52$, respectively. Cluster analysis divided subjects into two groups according to congruity between brand personality and customer-perceived self-image of family restaurants: congruity group and incongruity group. The two groups were differed from one another in general characteristics. Limitations and future research directions are also discussed.

A Study on the Korean Standard -Quality Excellence Index(KS-QEI) (KS제품 품질우수성지수(KS-QEI)에 관한 연구)

  • Yoo, Choon-Burn;Kim, Jun-Ho;Kim, Tai-Kyoo
    • Journal of Korean Society for Quality Management
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    • v.34 no.4
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    • pp.1-12
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    • 2006
  • The 'KS-QEI' is the quality evaluation model developed both by Korean Standard Association(KSA) and this research team, reflecting the characteristic of KS products' quality and the customers' demand factors. KS-QEI is a general index measuring and announcing KS products' quality excellency through the evaluation of its real user including customers and specialists. This index aimed to evaluate and announce the quality level of KS product annually which was the motivation of products' quality improvement to enterprises and guaranteed the products' reliability to customers. Ultimately, by competing in good faith among domestic enterprises and preparing foundation of continuous research and investment inducement, it was expected to improve the Korean industry's competitive power. This study was intended to develop improved KS-QEI by analysing 2006 research result, to which it had applied ameliorated and enlarged index in 2005. Especially, it established the weight by Analytic Hierarchy Process(AHP), which led to estimate weight mathematically by comparing and evaluating the importance and difficulty by its index. And this paper analyzed the research result by using multi-variate statistical methods.

Study on the Result Changes with the Size of the Variance in Taguchi Method and Factor Experimental (다구찌 기법과 요인실험의 실험 데이터의 산포 크기에 따라 결과 변화 고찰)

  • Ree, Sangbok
    • Journal of Korean Society for Quality Management
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    • v.41 no.1
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    • pp.119-134
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    • 2013
  • Purpose: The purpose of this paper is to show whether the results are changed with respect to the variance of the data, by analysis of data obtained from the Taguchi experimental techniques and general experiment. Because which cannot be prove by mathematical Formula, through experimental examples will show. Methods: Taguchi experiments were carried out with paper Helicopter experiment. Experimental Data are obtained by special designed Drop Test Equipment. While Experimental value arbitrarily changed, we looked at how Significant control Factor of Taguchi Methods and Factor experiments are changed. This process cannot be expressed as a Mathematical formula, but showed as a numerical example. Results: Saw significant changes in the factors when data is outside a certain range of the experimental data. By Test of Equivalence Variance, Experiment data is verified reliability. To find the Control Factor, Taguchi Method is better than the general experiment. Conclusion: We know that a Significant Factor is changed with the range of Variance of Experiment Data. The value of this paper is verified change process with Numerical Data obtained Experiment.

Ramp Load/Unload Velocity Control of VCM Using BEMF in HDD (램프 로드/언로드 하드디스크 드라이브의 역기전력을 이용한 VCM 속도제어)

  • Jeong, Jun;Kim, Tae-Soo;Kang, Tae-Sik;Jung, Kwang-Jo;Lee, Chul-Woo
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.16 no.1 s.106
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    • pp.50-56
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    • 2006
  • Since most of small form-factor drives have a load/unload mechanism and the flying height of the head is getting lower as the capacity of disk drives increases, the load/unload velocity becomes one of the important factors to ensure the reliability of the load/unload mechanism. To control the load/unload velocity accurately, velocity sensing is essential. In this paper, we introduce a very practical method that acquires the load/unload velocity from the back electromotive force (BEMF) of a voice coil motor (VCM) and propose a calibration method for measuring the BEMF from a given circuit. Moreover, the effect of calibration error and temperature variation on the measurement of BEMF is shown by simulation. Then, this present method is applied to the load/unload velocity controller and is verified from the experimental result.

3D Graphic Simulation for Dismantling Process of the KRR-2 (연구용 원자로 2호기 해체과정 전산모사)

  • 김성균;정관성;백삼태;이근우;박진호
    • Proceedings of the Korean Radioactive Waste Society Conference
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    • 2003.11a
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    • pp.707-719
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    • 2003
  • The D&D work requires worker's safety and high reliability of operation because it has been processing in high radioactive environment. Therefore, it is necessary to select the dismantling items and applicable dismantling technologies and analyze the scenarios for selected items. In this paper, the main dismantling items were selected by the consideration of several factors, their 3D CAD models were constructed as well. The applicable dismantling technologies for each dismantling items were selected and their dismantling scenarios were setup. Finally the 3D graphic simulations for the shielding concrete, the RSR, and the core are performed.

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Window Creativity of a Fashion Store -Its Effects on Consumer Emotions and Behavioral Intentions

  • Choi, Ara;Jang, Ju Yeun;Choo, Ho Jung
    • Journal of the Korean Society of Clothing and Textiles
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    • v.44 no.1
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    • pp.13-32
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    • 2020
  • This study investigates the multi-dimensional structure of fashion store window creativity and examines its effects on consumer responses. Through an expert evaluation survey, this study proposes that fashion store window creativity involves originality, relevance, and artistry. Two experiments are conducted to test the proposed hypotheses. Consumers' emotional responses to the level of window creativity are collected using psychophysiological and self-report methods. Fashion store window creativity has positive effects on psychophysiological affective responses. When the three dimensions of creativity are specified as explanatory factors of emotional responses, relevance and artistry show positive effects on arousal and pleasure, whereas originality has a negative effect on pleasure. Its effect on attitudes is mediated by arousal and pleasure; in addition, the effect on entering intentions is mediated by arousal. Attitudes toward window display also have a positive effect on entering intentions. This study extends existing research on creativity in marketing into the context of visual merchandising in fashion store windows. Findings provide meaningful implications in that the effects of fashion store window creativity on emotions affect consumer attitudes and behavioral intention. By adopting multiple approaches in the empirical phase of this study, the findings are built on strong reliability and validity.

A Longitudinal study on Fashion Lifestyle Variable of Global Consumer - Comparison among US, China and EU - (글로벌 소비자의 패션 라이프스타일 변화에 대한 종적연구 - 미국, 중국, EU 소비자를 대상으로 -)

  • Ko, Eun-Ju;Jang, Jung-Hyun
    • Journal of Fashion Business
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    • v.16 no.1
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    • pp.26-40
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    • 2012
  • The purpose of this study is to examine the fashion lifestyle variable of global consumers and to compare among US, Chinese and EU consumers. The data were collected in US(n=749), China(n=702) and EU(n=1083) from 2008 to 2010. For analysis, factor analysis, reliability analysis, K-means cluster analysis and chi-square analysis of SPSS 18.0 are used. The research results are as follow: First, it is shown that significant lifestyle factors of global fashion consumers are "adventure seeking", "fashion-oriented", "conspicuous consumption", "leadership", "brand-oriented", and "DIY". As a result of the cluster analysis of lifestyle types, four cross-national market segments are identified. These segments can be labeled as follows: "conservative fashion-oriented group", "passive consumer group", "neutral consumer group", "active fashion-oriented group". Second, findings also reveal that fashion lifestyle segments had meaningful differences between nationality and by year. Third, the US consumers tended to have conservative fashion-oriented lifestyle in 2008, however global consumers were changed to have active fashion lifestyle in 2010. This research will be useful to global brands in planning marketing strategies by offering specific information for global consumer fashion lifestyle.

Establishment of Affective Achievement Criteria and Investigation of 8th Grade Students' Affective Characteristics in Mathematics (수학에서의 정의적 성취 판단을 위한 기준 점수 설정 및 중2 학생들의 성취 특성)

  • Kim, Sun-Hee
    • Journal for History of Mathematics
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    • v.24 no.3
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    • pp.145-163
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    • 2011
  • This study sets the cut points of affective achievement scores based on the criteria referenced assessment. The modified Angoff method is applied to the standardized mathematics affect inventory which had validity and reliability. The cut points are set for 6 factors i.e. learning directivity, self control, anxiety, interest, cognizing value and confidence. As the results, among percentages of factor that middle school 2nd grade students in Korea achieved, the proportion of cognizing value is the highest. And there are no difference of the proportions as for gender, differentiated instruction, and region.