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Permanent URI for this collectionhttps://hdl.handle.net/20.500.14288/3
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Publication Metadata only The digital twin synchronization problem: framework, formulations, and analysis(Taylor & Francis Inc, 2023) Matta, Andrea; Department of Business Administration; Tan, Barış; Department of Business Administration; College of Administrative Sciences and EconomicsAs the adoption of digital twins increases steadily, it is necessary to determine how to operate them most effectively and efficiently. In this article, the digital twin synchronization problem is introduced and defined formally. Frequent synchronizations would increase cost and data traffic congestion, whereas infrequent synchronizations would increase the bias of the predictions and yield wrong decisions. This work defines the synchronization problem variants in different contexts. To discuss the problem and its solution, the problem of determining when to synchronize an unreliable production system with its digital twin to minimize the average synchronization and bias costs is formulated and analyzed analytically. The state-independent, state-dependent, and full-information solutions have been determined by using a stochastic model of the system. Solving the synchronization problem using simulation is discussed, and an approximate policy is proposed. Our results show that the performance of the state-dependent policy is close to the optimal solution that can be obtained with full information and significantly better than the performance of the state-independent policy. Furthermore, the approximate periodic state-dependent policy yields near-optimal results. To operate digital twins more effectively, the digital twin synchronization problem must be considered and solved to determine the optimal synchronization policy.Publication Metadata only LeverAge: a European network to leverage the multi-age workforce(Oxford Univ Press, 2024) Scheibe, Susanne; Kooij, Dorien; Truxillo, Donald M.; Zaniboni, Sara; Abuladze, Liili; Bamberger, Peter A.; Balytska, Mariia; Betanzos, Norma D.; Perek-Bialas, Jolanta; Boehm, Stephan Alexander; Burmeister, Anne; Cabib, Ignacio; Caon, Maurizio; Deller, Juergen; Derous, Eva; Drury, Lisbeth; Eppler-Hattab, Raphael; Fasbender, Ulrike; Fueloep, Marta; Furunes, Trude; Gerpott, Fabiola H.; Gostautaite, Bernadeta; Halvorsen, Cal J.; Hernaus, Tomislav; Inceoglu, Ilke; Iskifoglu, Mustafa; Ivanoska, Kalina Sotiroska; Kanfer, Ruth; Kenig, Nikolina; Klimek, Sabina; Kunze, Florian; Mertan, Emete Biran; Varianou-Mikellidou, Cleo; Moasa, Horia; Ng, Yin Lu; Parker, Sharon K.; Reh, Susan; Resuli, Vebina; Schmeink, Martina; Silberg, Slavka; Sousa, Ines C.; Steiner, Dirk D.; Stukalina, Yulia; Tomas, Jasmina; Topa, Gabriela; Turek, Konrad; Vignoli, Michela; von Bonsdorff, Monika; Wang, Dahua; Wang, Mo; Yeung, Dannii Yuen-lan; Yildirim, Kemal; Zhang, Xin; Znidarsic, Jana; Department of Business Administration; Marcus, Justin; Al Mursi, Noura; Kıran, Sibel; Department of Business Administration; College of Administrative Sciences and Economics; Graduate School of Business; School of MedicineBringing together 150+ scholars and practitioners from 50+ countries, and funded by the European Commission, COST Action LeverAge (https://www.cost.eu/actions/CA22120/) is the first network-building project of its kind in the work and organizational psychology and human resource management (WOP/HRM) aspects of work and aging. Focused on the aging workforce, the Action aims to foster interdisciplinary and multinational scientific excellence and the translation of science to practical and societal impact across 4 years. Based on a research synthesis, we identify five broad research directions for work and aging science including work and organizational practices for a multi-age workforce, successful aging at work, the integration of age-diverse workers and knowledge transfer, aging and technology at work, and career development in later life and retirement. We provide key research questions to guide scientific inquiry along these five research directions alongside best practice recommendations to expand scholarly impact in WOP/HRM.Publication Metadata only Local market reaction to brand acquisitions: evidence from the craft beer industry(Informs, 2024) Misra, Kanishka; Singh, Vishal; Department of Business Administration; Güler, Ali Umut; Department of Business Administration; College of Administrative Sciences and EconomicsA large stream of literature shows that the emotional bond between consumer and brand can induce a sense of psychological ownership, and shocks to this relationship, such as brand repositioning or acquisitions, can induce a negative consumer reaction. This article provides a large-scale empirical study on such brand "transgressions" in the context of acquisition of local breweries by large conglomerates. Our analysis covering 40 brand acquisitions shows a strong negative reaction to acquisitions on social media. Analysis of transaction data shows that this adverse sentiment results in a 15% drop in baseline demand in the local market following the acquisition. This represents a significant negative shock to the acquired brand, as the local region accounts for more than one-fifth of brand sales on average, even in the long run. The decline begins immediately following the acquisition and manifests in both sales and product ratings. Our findings indicate a more pronounced reaction to acquisitions by "big business" and provide evidence of demand spillover in the home market to competing brands that remain locally owned. The theoretical and managerial implications of our findings are discussed.Publication Metadata only Preface of the special issue on global multiobjective optimization(Springer, 2021) Miettinen, Kaisa; Department of Business Administration; Sayın, Serpil; Faculty Member; Department of Business Administration; College of Administrative Sciences and Economics; 6755N/APublication Metadata only Does parent satisfaction with a childcare provider matter for loyalty?(Emerald Group Publishing, 2006) Keiningham, T.L.; Andreassen, T.W.; Estrin, D.; Department of Business Administration; Aksoy, Lerzan; Faculty Member; Department of Business Administration; College of Administrative Sciences and Economics; N/APurpose - The purpose of this study is to investigate the relationship between parent satisfaction and child retention at a childcare provider. Design/methodology/approach - The survey data used in the analyses involves a sample size of 1,003 respondents, all clients of a regional childcare provider in the USA. Logistic regression was used to test the propositions. Findings - The results indicate that parent satisfaction is most important to child retention when the child is very young (birth to one year of age). As children increase in age, however, parent satisfaction becomes increasingly less predictive of children's continued enrollment at a childcare facility. Research limitations/implications - One of the limitations of this research is that it tests the propositions within a single firm. Future research should attempt to replicate these findings across several childcare providers. Practical implications - Emphasizing improvements in different attributes for different age groups has implications for increasing retention for childcare providers, in addition to ultimately increasing the satisfaction of parents. Originality/value - While all would agree that childcare services are of extremely high importance (at both a national and individual level), no research to date has examined the role of parent satisfaction to the continued enrollment of a child at a childcare facility. Our findings show that the presumed relationship between satisfaction and retention varies greatly by the age of child.Publication Metadata only The 39th international conference of the EURO working group on operational research applied to health services: ORAHS 2013 special issue(Springer, 2015) Çayırlı, Tuğba; Günal, Murat M.; Department of Business Administration; Department of Industrial Engineering; Güneş, Evrim Didem; Örmeci, Lerzan; Faculty Member; Faculty Member; Department of Business Administration; Department of Industrial Engineering; College of Administrative Sciences and Economics; College of Engineering; 51391; 32863N/APublication Metadata only A bourdieuan relational perspective for entrepreneurship research(Wiley, 2014) Tatli, Ahu; Vassilopoulou, Joana; Forson, Cynthia; Slutskaya, Natasha; Department of Business Administration; Özbilgin, Mustafa; Other; Department of Business Administration; College of Administrative Sciences and Economics; N/AIn this paper, we illustrate the possibilities a relational perspective offers for overcoming the dominant dichotomies (e.g., qualitative versus quantitative, agency versus structure) that exist in the study of entrepreneurial phenomena. Relational perspective is an approach to research that allows the exploration of a phenomenon, such as entrepreneurship, as irreducibly interconnected sets of relationships. We demonstrate how Pierre Bourdieu's concepts may be mobilized to offer an exemplary toolkit for a relational perspective in entrepreneurship research.Publication Metadata only Perceptions of organizational tightness-looseness moderate associations between perceived unfair discrimination and employees' job attitudes(Sage Publications Inc, 2022) N/A; Department of Business Administration; Department of Business Administration; N/A; Marcus, Justin; Aksoy, Eda; Alemu, Gashaw Tesfa; Faculty Member; Faculty Member; Master Student; Department of Business Administration; College of Administrative Sciences and Economics; College of Administrative Sciences and Economics; Graduate School of Social Sciences and Humanities; 124653; 261803; N/AFusing social psychological theory on the BIAS map and attributions with cross-cultural theory on organizational tightness-looseness, we examine the interactive effects of active/passive facilitation/harm by organizational members and perceptions of organizational tightness on employee job attitudes. Study hypotheses were tested using a sample of bank employees located across 26 branches of a large bank in Addis Ababa, Ethiopia (N = 324). Using a norm-behavior alignment perspective, we hypothesized that (supportive) active facilitation behaviors would be more strongly related to employee attitudes in tight versus loose perceived organizational cultures, whereas (negative) passive facilitation, active harm, and passive harm behaviors would be less strongly related to employee attitudes in tight versus loose perceived organizational cultures. Results provided overall support for these expectations. The present findings have implications for the mitigation of the effects of unfair discrimination on employee attitudes in organizational contexts, theorized associations between cultural T-L and unfair discrimination, and the generalizability of cultural T-L theory to developing country contexts that are typified by collectivistic and tight societal cultures.Publication Metadata only Overtime scheduling: an application in finite-capacity real-time scheduling(Taylor & Francis, 1996) Department of Business Administration; Akkan, Can; Faculty Member; Department of Business Administration; College of Administrative Sciences and Economics; N/ANegotiating and meeting due-times for work-orders is often the most important concern of managers of manufacturing systems. We propose a new approach called overtime scheduling that determines on which work-centres, when and how much overtime is required to meet a requested due-time with minimum overtime cost. This method would be used as a part of a finite-capacity real-time scheduling and planning system. We propose a work-order insertion based approach, where a new work-order is scheduled without substantially changing the schedule of previously scheduled work-orders. Based on this approach, we characterise the solution space and present experimental results on the performances of several heuristics.Publication Metadata only How customer lifetime value is changing how business is managed(Taylor & Francis, 2006) Keiningham, T.L.; Bejou, D.; Department of Business Administration; Aksoy, Lerzan; Faculty Member; Department of Business Administration; College of Administrative Sciences and Economics; N/AIn the quest for sustainable competitive advantage, managers have sought to differentiate themselves through a customer (as opposed to product) focus. This has given rise to successive strategies designed to improve the customer experience (e.g., objective quality, service quality, customer satisfaction, customer retention, customer loyalty, etc.). The problem, however, is that a satisfied, loyal customer who is persuaded to consistently buy a firm's product or service over and over again because of its quality can be and often is unprofitable. Therefore, using such strategies does not guarantee increased profits. As a result, firms will increasingly rely on the measurement and management of customers' lifetime values to guide their customer loyalty efforts.