• Title/Summary/Keyword: Empirical modelling

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Understanding Abusive Supervision: The Impacts of Abusive Supervision on Employees' Engagement and Organizational Commitment in the Deluxe Hotel

  • Jung, Hyo Sun;Kim, Ki-bbeum;Yoon, Hye Hyun
    • Culinary science and hospitality research
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    • v.24 no.2
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    • pp.8-15
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    • 2018
  • This study examines the effect of abusive supervision on employees' engagement and commitment in the deluxe hotel. Based on total 272 hotel employees obtained from the empirical research, this study verified total 3 hypotheses. The hypothesized relationships in the model were tested simultaneously by using structural equation modelling. Abusive supervision perceived by employees had negative effect on engagement and employees' engagement had positive effect on organizational commitment. Also, abusive supervision perceived by employees did not have a significant effect on organizational commitment, full mediation effect through engagement existed. The study results are expected to be used as data for searching for effective responding ways at an organizational level and find practical ways to further increase employees' positive organizational behavior.

Brand Credibility and Brand Involvement as an antecedent of Brand Equity: An Empirical Study

  • Rao, Roopesh
    • Asia-Pacific Journal of Business
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    • v.3 no.1
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    • pp.17-28
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    • 2012
  • Very few studies have been done on Studying Brand credibility and Involvement as a determinant of Brand Equity. Literature on Brand Equity signifies lots of constructs like, Country of Origin, Brand Signaling, and Brand Power act as determinant to Brand Equity. This study tries to formulate relationship between the construct Brand Credibility and Brand Involvement as Antecedents to Brand Equity of Product. Using a Two Step Structural Equation Modelling approach analysis on the data collected on Mobile Phone brands were done. Result signified that Brand Credibility and Brand Involvement had significant influence on Brand Equity of the Product. On the Other hand there was no significant relationship between Brand Credibility and Brand Involvement of the Product.

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Numerical and theoretical modelling of low velocity impact on UHPC panels

  • Prem, Prabhat R.;Verma, Mohit;Ramachandra Murthy, A.;Rajasankar, J.;Bharatkumar, B.H.
    • Structural Engineering and Mechanics
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    • v.63 no.2
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    • pp.207-215
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    • 2017
  • The paper presents the studies carried out on low velocity impact of Ultra high performance concrete (UHPC) panels of size $350{\times}350{\times}10mm^3$ and $350{\times}350{\times}15mm^3$. The panels are cast with 2 and 2.5% micro steel fibre and compared with UHPC without fiber. The panels are subjected to low velocity impact, by a drop-weight hemispherical impactor, at three different energy levels of 10, 15 and 20 J. The impact force obtained from the experiments are compared with numerically obtained results using finite element method, theoretically by energy balance approach and empirically by nonlinear multi-genetic programming. The predictions by these models are found to be in good coherence with the experimental results.

Do Quality-Focused Retailer Brand Types Contribute to Building Store Loyalty in Korea?

  • Chung, Lak-Chae;Cho, Young-Sang
    • Journal of Distribution Science
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    • v.11 no.9
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    • pp.5-15
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    • 2013
  • Purpose - The research aim is to shed empirical light on whether quality-focused retailer brands such as Premium brand of Tesco Korea, Prime of Lotte Mart, and Best of E-Mart in the grocery market, make a contribution to developing store loyalty in the Korean market particularly. Research design, data, methodology - After developing sixconstructs, such as higher quality, stock availability, price levels, national brands, retailer brand attitudes, and store loyalty, the authors adopted exploratory factor analysis, confirmatory factor analysis, chi-square test and structural equation modelling as a research technique. Results - It was found that higher quality strongly influences the retailer brand attitude formation, and that retailer brand customers were sensitive to price levels. Buyers are, nevertheless, relatively less aware of price levels, when purchasing quality-oriented retailer brand types. Conclusions - The research implied that quality-oriented retailer brand types make a significant contribution to retailer brands attitude formation, and further, building store loyalty.

Flamelet Modelling of Soot Formation and Oxidation in a Laminar $CH_4$-Air Diffusion Flame (화염편모델을 이용한 층류확산화염장의 매연 생성 및 산화과정 해석)

  • Kim, Gun-Hong;Kim, Hu-Jung;Kim, Yong-Mo;Kim, Seung-Ku
    • 한국연소학회:학술대회논문집
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    • 2003.12a
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    • pp.3-9
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    • 2003
  • By utilizing a semi-empirical soot model, the applicability of the laminar flamelet concept for simulating the formation and oxidation of soot in the laminar diffusion flame has been studied. The source terms for two transport equations of the soot formation and oxidation are calculated in the mixture fraction/scalar dissipation rate space for laminar flamelets and stored in a library. In this study, emphasis is given to the interaction associated with radiation and soot formation. The radiative heat loss is obtained by solving the radiative transfer equation using the unstructured grid finite volume method with the WSGGM. The calculated temperatures and soot volume fractions agree relatively well with the experimental data and the previous numerical results of Kaplan et al. using the detailed chemistry.

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Review of Stormwater Quality, Quantity and Treatment Methods Part 1: Stormwater Quantity Modelling

  • Aryal, Rupak;Kandasamy, J.;Vigneswaran, S.;Naidu, R.;Lee, S.H.
    • Environmental Engineering Research
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    • v.14 no.2
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    • pp.71-78
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    • 2009
  • A review of stormwater quantity and quality in the urban environment is presented. The review is presented in three parts. The first part reviews the mathematical methods for stormwater quantity and has been undertaken by examining a number of stormwater models that are in current use. The important feature of models, their applications, and management has been discussed. Different types of stormwater management models are presented in the literatures. Generally, all the models are simplified as conceptual or empirical depending on whether the model is based on physical laws or not. In both cases if any of the variables in the model are regarded as random variables having a probability distribution, then the model is stochastic model. Otherwise the model is deterministic (based on process descriptions). The analytical techniques are presented in this paper.

A mixture tolerancing with multi-characteristics by response surface method (반응표면분석에 의한 혼합물의 다특성 허용차배분)

  • Kim, Seong-Jun;Lim, Jung-Gyoo;Park, Jong-In
    • Proceedings of the Korean Society for Quality Management Conference
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    • 2009.10a
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    • pp.15-22
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    • 2009
  • Quality variations in mixture products such as medicine, food, engineering chemicals, and alloy materials can be caused by their own sub-components. For instance, discharging characteristics of a lithium-ion rechargeable battery depend upon the mixture ratio of ethylene, dimethyle, and ethyle-methyle, all of which consists an electrolyte solution in the battery. Thus it is important to determine tolerances of mixture components in maintaining the product quality at a desired level. This paper proposes a simple but efficient approach to a mixture tolerancing method with multi-response variables. We use a response surface method for empirical modelling between mixture components. An illustrative example of the proposed method is given.

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Influence of friendship to academic persistence and drop out and mediation effect of school adaptation (대학생의 중도탈락에 미치는 교우관계의 영향력과 학교적응의 매개효과)

  • Kim, Hyoe-Un;Kim, Ki-Won
    • Journal of Fashion Business
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    • v.15 no.4
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    • pp.87-109
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    • 2011
  • This study was to examined the relationship between goal setting, self improvement, social support of parents, friendship, school adaptation, drop out. In our research model, goal setting, self improvement, social support of parents, and friendship is exogenous variable and school adaption and drop out is endogenous variable. A total of 323 undergraduate student(254 female, 69 male) complete the questionnaires. Structural equation modelling showed that, as hypothesized, establishment of goals, social support of parent and friendship have effect on school adaptation, and friendship also have direct effect on drop out. School adaptation mediate path from goal setting, social support of parents, and friendship. This study provides empirical evidence for a model that show how to control the drop out of students.

Determination of Thermal Conductivity and Numerical Analysis of Al-Cr-N-O Composites Layer Formed by Hydro-thermal Process (수열합성된 Al-Cr-N-O계 도포층의 열전도 측정과 수학적 해석)

  • Kim, Ma-Ro;Yang, So-Eun;Lee, Jong-Jae;Kim, Byeong-Du;Choe, Yong
    • Proceedings of the Korean Institute of Surface Engineering Conference
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    • 2014.11a
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    • pp.215-215
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    • 2014
  • Composites layer of Al-Cr-Ni-O system was prepared on a steel plate by hydro-thermal process at $700^{\circ}C$ for 12 hours, which phase identification and thermal conductivity were determined. The composites layer consisted of aluminum nitride, alumina, chromium carbide and aluminium, which density was $3.7kg/m^3$. The thermal conductivity of the coating layer determined by thermal data acquisition system was about 98.0 W/m/ which depended on the AlN content. Numerical modelling of the heat transfer behavior of the coating layer was well agreement with the empirical data.

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Simulation for Initial Motion of a Test Vehicle Launched from Sliding Launcher (활강 진수대에서 운용되는 시험용 운동체의 초기 거동 모사)

  • Yepmg-Il Park;Chan-Ki Kim;Sun-Hong Kwon;Man-Hyung Lee
    • Journal of the Society of Naval Architects of Korea
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    • v.36 no.2
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    • pp.29-39
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    • 1999
  • In this study, mathematical modelling for initial motion of test vehicle launched from sliding launcher is performed, and simulation results from this mathematical models are verified by comparing them with sea trial results. Especially, it is showed that models using strip method give better results than using empirical formulae and linear equations of motion. This mathematical model can give useful tools to design sliding launchers or test vehicles.

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