Browsing Faculty of Business by Author "1"
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The 39th international conference of the EURO working group on operational research applied to health services: ORAHS 2013 special issue
Çayırlı, Tuğba; Gunal, M. M.; Gunes, E.; Ormeci, L. (Springer Science+Business Media, 2015-09)The healthcare sector is facing major challenges worldwide in terms of higher demands for efficiency, quality and equity. Operational Research (OR) techniques offer valuable tools for improving the design and delivery of ... -
Accelerated learning of user profiles
Atahan, Pelin; Sarkar, S. (Informs, 2011-02)Websites typically provide several links on each page visited by a user. Whereas some of these links help users easily navigate the site, others are typically used to provide targeted recommendations based on the available ... -
Action research contextualizes DEA in a multi-organizational decision-making process
Oral, Muhittin (Elsevier, 2012-06-01)The theory of participatory action research (PAR) grew out of the practice of problem-solving in groups and organization by involving the participation of all pertinent stakeholders in decision-making process through ... -
An actor-network theory (ANT) approach: analysis of Turkish e-government gateway initiative
There are various models proposed in the literature to analyze trajectories of e-Government projects in terms of success and failure. Yet, only the Actor-Network Theory (ANT) perspective (Heeks and Stanforth, 2007) considers ... -
Adaptive pairs trading strategy performance in Turkish derivatives exchange with the companies listed on Istanbul stock exchange
Bolgün, K. E.; Kurun, E.; Güven, Serhat (Springer International Publishing, 2012-03-02)We implemented model-driven statistical arbitrage strategies in Turkish equities market. Trading signals are generated by optimized parameters of distance method. When the trade in signal is triggered by the model, ... -
Addressing endogeneity in the causal relationship between sustainability and financial performance
Soytaş, Mehmet Ali; Denizel, M.; Uşar, Damla Durak (Elsevier, 2019-04)The existing empirical literature on the relationship between corporate sustainability performance and corporate financial performance casts doubt on the direction of this relationship although more studies point out a ... -
Algorithmic pairs trading with expert inputs, a fuzzy statistical arbitrage framework
Bayram, M.; Akat, Muzaffer; Bulkan, S. (IOS Press, 2020)Pairs trading is a widespread market-neutral trading strategy aiming to utilize the relationship between pairs of financial instruments in efficient markets, where predictability of separate asset movements is theoretically ... -
Altering the environment to improve appointment system performance
Çayırlı, Tuğba; Yang, K. K. (Informs, 2019-06)Current research on clinic performance is focused primarily on appointment scheduling rather than shaping the clinical environments. The goal of this study is to investigate the impact of environmental factors on the total ... -
Alışveri̇ş merkezleri̇ni̇n Türki̇ye’deki̇ mevzuat çerçevesi̇nde değerlendi̇ri̇lmesi̇
Ceylan, R.; Özbakır, B. A.; Erol, Işıl (Middle East Technical University Faculty of Architecture, 2017)Küresel ölçekte alışveriş merkezlerinin tarihsel gelişim süreci incelendiğinde, ticaret alanlarının alışveriş merkezlerine dönüşüm sürecinde ilk adımların Avrupa’da atıldığı bilinmektedir (Birol, 2005; Geç, 2008 ve Kiriş, ... -
Ambulance location for maximum survival
Erkut, Erhan; Ingolfsson, A.; Erdoğan, G. (Wiley, 2008-02)This article proposes new location models for emergency medical service stations. The models are generated by incorporating a survival function into existing covering models. A survival function is a monotonically decreasing ... -
Analysis of cross-country variations in the depth of European mortgage markets
Kutlukaya, M.; Erol, Işıl (Springer Science+Business Media, 2016-09)To date, quantitative analysis on the depth of mortgage markets across a broad set of countries has been very limited. This paper uses a rich and balanced data set on 31 European countries to investigate the cross-country ... -
Anticipating the financial crisis: evidence from insider trading in banks
Akın, Özlem; Marín, J. M.; Peydro, J. - L. (Oxford University Press, 2020-04)Banking crises are recurrent phenomena, often induced by excessive bank risk-taking, which may be due to behavioural reasons (over-optimistic banks neglecting risks) and to conflicts of interest between bank shareholders/managers ... -
App popularity: Where in the world are consumers most sensitive to price and user ratings?
Kubler, Raoul Volker; Pauwels, K. H.; Yıldırım, G.; Fandrich, T. (American Marketing Association, 2018-09)Many companies compete globally in a world in which user ratings and price are important drivers of performance but whose importance may differ by country. This study builds on the cultural, economic, and structural ... -
The appreciative democratic voice of DEA: a case of faculty academic performance evaluation
Oral, Muhittin; Oukil, A.; Malouin, J.-L.; Kettani, O. (Elsevier, 2014-03)Data envelopment analysis (DEA) is in fact more than just being an instrument for measuring the relative efficiencies of a group of decision making units (DMU). DEA models are also means of expressing appreciative democratic ... -
Approximating vehicle dispatch probabilities for emergency service systems with location-specific service times and multiple units per location
Budge, S.; Ingolfsson, A.; Erkut, Erhan (Informs, 2009-02)To calculate many of the important performance measures for an emergency response system, one requires knowledge of the probability that a particular server will respond to an incoming call at a particular location. ... -
An approximation of stochastic hyperbolic equations: case with Wiener process
Ashyralyev, A.; Akat, Muzaffer (Wiley, 2013-06)In the present paper, the two-step difference scheme for the Cauchy problem for the stochastic hyperbolic equation is presented. The convergence estimate for the solution of the difference scheme is established. In ... -
An approximation of stochastic telegraph equations
Ashyralyev, A.; Akat, Muzaffer (AIP Publishing, 2012)In the present paper the two-step difference scheme for the telegraph equation is presented. The convergence estimate for the solution of the difference scheme is established. In applications, the convergence estimates for ... -
Aspiration-based choice
Güney, Begüm; Richter, M.; Tsur, M. (Elsevier, 2018-07)Numerous studies and experiments suggest that aspirations for desired but perhaps unavailable alternatives influence decisions. A common finding is that an unavailable aspiration steers agents to choose similar available ... -
Assessing consequences of component sharing across brands in the vertical product line in the automotive market
Verhoef, P. C.; Pauwels, Koen Hendrik; Tuk, M. A. (Wiley, 2012-07)Component sharing may look great in the boardroom, but not in the showroom. Indeed, savings on R&D and production costs could be offset by a plunge in customer brand attractiveness. Combining experimental with econometric ... -
Assessment of patient classification in appointment system design
Çayırlı, Tuğba; Veral, E.; Rosen, H. (Production and Operations Management Society, 2008-05)This paper investigates two approaches to patient classification: using patient classification only for sequencing patient appointments at the time of booking and using patient classification for both sequencing and ...
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