İşletme Bölümü Yayın Koleksiyonu
Permanent URI for this collectionhttps://hdl.handle.net/20.500.12416/403
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Article Citation - Scopus: 25Workplace Deviance and Human Resource Management Relations: a Case Study of Turkish Hotel Employees(Routledge, 2018) Kalemci, R.A.; Tuzun, I.K.The main purpose of this study is to examine the negative associations between employees' perception of the effectiveness of performance appraisal practices and deviant workplace behavior. This study also tests the mediating effect of the forms of organizational justice in the relationship between performance appraisal practices and deviant workplace behavior. Moreover, it also investigates how line managers' performance appraisal politics may influence the relationship between perceptions of performance appraisal practices and employee deviant workplace behavior. In order to facilitate this study, the research team employed a survey design. A total of 193 service employees from different service establishments attended the forum where the study was conducted in the capital city of Turkey, Ankara. The results of this study strongly support the premise that effective performance appraisal practices influence employee deviance behavior, and especially that interactional justice is an important predictor of employee violative behavior. Moreover, the findings indicate that there is no evidence regarding the moderating effect of employees' perception of managers' appraisal politics in the negative relationship between performance appraisal effectiveness and employee deviance. © 2018 Taylor & Francis Group, LLC.Article Citation - WoS: 9Citation - Scopus: 15Stock Returns and Volatility: Empirical Evidence From Fourteen Countries(Routledge Journals, Taylor & Francis Ltd, 2005) Balaban, E; Bayar, AThis is a pioneering effort to test in 14 countries the relationship between stock market returns and their forecast volatility derived from the symmetric and asymmetric conditional heteroscedasticity models. Both weekly and monthly returns and their volatility are investigated. An out-of-sample testing methodology is employed using volatility forecasts instead of investigating the relation between stock returns and their in-sample volatility estimates. Expected volatility is derived from the ARCH(p), GARCH(1, 1), GJR-GARCH(1, 1) and EGARCH(1, 1) forecast models. Expected volatility is found to have a significant negative or positive effect on country returns in a few cases. Unexpected volatility has a negative effect on weekly stock returns in six to seven countries and on monthly returns in nine to eleven countries depending on the volatility forecasting model. However, it has a positive effect on weekly and monthly returns in none of the countries investigated. It is concluded that the return variance may not be an appropriate measure of risk.Article Citation - WoS: 18Citation - Scopus: 18Estimation in Bivariate Nonnormal Distributions With Stochastic Variance Functions(Elsevier Science Bv, 2008) Tiku, Moti L.; Islam, M. Qamarul; Sazak, Hakan S.Data sets in numerous areas of application can be modelled by symmetric bivariate nonnormal distributions. Estimation of parameters in such situations is considered when the mean and variance of one variable is a linear and a positive function of the other variable. This is typically true of bivariate t distribution. The resulting estimators are found to be remarkably efficient. Hypothesis testing procedures are developed and shown to be robust and powerful. Real life examples are given. (C) 2007 Elsevier B.V. All rights reserved.Article Citation - WoS: 22Citation - Scopus: 23An Extended Mixed-Integer Programming Formulation and Dynamic Cut Generation Approach for the Stochastic Lot-Sizing Problem(informs, 2018) Tunc, Huseyin; Kilic, Onur A.; Tarim, S. Armagan; Rossi, RobertoWe present an extended mixed-integer programming formulation of the stochastic lot-sizing problem for the static-dynamic uncertainty strategy. The proposed formulation is significantly more time efficient as compared to existing formulations in the literature and it can handle variants of the stochastic lot-sizing problem characterized by penalty costs and service level constraints, as well as backorders and lost sales. Also, besides being capable of working with a predefined piecewise linear approximation of the cost function-as is the case in earlier formulations-it has the functionality of finding an optimal cost solution with an arbitrary level of precision by means of a novel dynamic cut generation approach.Article Citation - WoS: 4Citation - Scopus: 5Tackling Service Quality in the Telecommunication B2b Market(Emerald Group Publishing Ltd, 2019) Tas, Aysegul; Ergin, Elif Akagun; Kurtulmusoglu, Feride Bahar; Sahin, Omer FarukPurpose This study will attempt to focus on how vendors serve operators, as operator service quality starts with vendor's technology infrastructure and service quality. The purpose of this study is to exhibit the most important vendor service quality items and dimensions for the operators in the telecommunications industry. Design/methodology/approach A total of 268 employees from various age groups, cities, job levels and departments participated in the survey. Findings Expected service quality results indicated that operators need high service quality. When telecommunication needs of subscribers are taken into account, it is normal for operators to expect high service quality from vendors. Results also reveal that being dependable and providing continuous support are critical for the telecommunications industry. Perceived service quality results demonstrate that customer expectations failed to be satisfied. In this study conducted in the telecommunications market, the expectations of operator employees regarding vendors is shaped under two dimensions. These dimensions are employee and service center features and provider timeliness and accuracy. When Topsis method was used to determine the most important vendor characteristics, timeliness and trust were identified as the top two criteria. Originality/value To the best of the authors' knowledge, this study is the first to put forth the most important vendor service quality items and dimensions for the operators in the telecommunications industry.Article Citation - WoS: 30Citation - Scopus: 35Employee Deviant Behavior: Role of Culture and Organizational Relevant Support(Emerald Group Publishing Ltd, 2019) Kalemci, R. Arzu; Kalemci-Tuzun, Ipek; Ozkan-Canbolat, ElaPurpose The purpose of this paper is to increase the knowledge and understanding of organizational and supervisory support in the context of employee deviant workplace behavior (DWB) by examining the potential associations of employees' cultural value orientations. This paper aims to: clarify DWB; review perceived organizational support (POS) and perceived supervisory support (PSS); discuss the meaning of employees' cultural value orientations (individualism-collectivism, power distance and paternalism); use the fuzzy logic model to analyze relationships between DWB and POS, as well as PSS and employees' cultural value orientations. Design/methodology/approach This research applies a fuzzy-set qualitative comparative analysis. Findings The results show the role of employee perceived organizational and supervisory support and cultural dimension (power distance and paternalism) configurations on employee DWB. Originality/value The main originality of this study is to further increase the understanding of organizational and supervisory support in the context of employee DWB by examining the potential associations of employees' cultural value orientations. This study extends the previous research by providing evidence that organizational and supervisory support influences employees' DWB.Conference Object Citation - WoS: 13Citation - Scopus: 17An Overview of Revenue Management and Dynamic Pricing Models in Hotel Business(Edp Sciences S A, 2018) Bandalouski, Andrei M.; Kovalyov, Mikhail Y.; Pesch, Erwin; Tarim, S. ArmaganBasic concepts and brief description of revenue management models and decision tools in the hotel business are presented. An overview of the relevant literature on dynamic pricing, forecasting methods and optimization models is provided. The main ideas of the authors' customized revenue management method for the hotel business are presented.Article Citation - WoS: 70Citation - Scopus: 85Organizational and Supervisory Support in Relation To Employee Turnover Intentions(Emerald Group Publishing Limited, 2012) Tuzun, Ipek Kalemci; Kalemci, R. ArzuPurpose - The present paper aims to examine the relationship between perceived organizational support (POS), perceived supervisory support (PSS) and turnover intentions. The paper also aims to investigate whether employee's individual cultural values regarding collectivism and individualism moderate the relationship between POS and turnover intentions. Design/methodology/approach - Data were obtained utilizing survey from a sample of 304 full-time employed adults working in insurance companies in Turkey. Employees completed regular survey that contained measures of the constructs of interest of this study. Findings - Results revealed that employees who perceive high levels of PSS but report low levels of POS will also report high levels of turnover intentions compared to employees who perceive low PSS and low POS. Practical implications - For increasing POS to be successful, managers must strive to find out the way to increase their social support, and then tailor support accordingly. Managers may benefit from considering cultural values during the support process. Furthermore organizations may develop different support policies for employees. Originality/value - The study's findings add to the growing body of research concluding that supervisor-related perceptions and attitudes can shape organization-related perceptions and attitudes.