Browsing by Author "Özsoy, Volkan Soner"
Now showing items 1-12 of 12
-
The determination of the most suitable inertia weight strategy for particle swarm optimization via the minimax mixed-integer linear programming model
Özsoy, Volkan Soner (Emerald Publishing, 2021)Purpose This paper aims to consider each strategy of the particle swarm optimization (PSO) as a unit in data envelopment analysis (DEA) and uses the minimax mixed-integer linear programming DEA approach to find the most ... -
Evaluating of hospital appointment systems in Turkey: Challenges and opportunities
Küçük, Aziz; Demirci, Mustafa; Kerman, Gül; Özsoy, Volkan Soner (Elsevier, 2021)Background: Recently, appointment registration systems (especially phone and web-based) that provide easier access to hospital medical services have become more common than traditional queuing registration systems. Therefore, ... -
Hierarchical groups DEA cross-efficiency and TOPSIS technique: An application on mobile money agents locations
Muvingi, Jacob; Peer, Arshad Ahmud Iqbal; Lotfi, Farhad Hosseinzadeh; Özsoy, Volkan Soner (Inderscience Publishers, 2022)Ranking of efficient decision-making units (DMUs) allows a further analysis of the data envelopment analysis (DEA) efficient DMUs, where otherwise a high number of efficient DMUs can be identified. The current research ... -
Karma-tamsayılı iki aşamalı veri zarflama analizi modeli ile en etkin tedarikçi seçimi
Özsoy, Volkan Soner; Örkçü, Mediha; Örkçü, Hacı Hasan (Pamukkale Üniversitesi, 2020)Tedarikçi seçimi tedarik zinciri yönetiminde en önemli stratejik konulardan biridir ve bir organizasyonda kilit bir rol oynar. Uygun bir tedarikçi seçmek satın alma departmanının en önemli kararlarından biridir ve bu ... -
A minimax approach for selecting the overall and stage-level most efficient unit in two stage production processes
Özsoy, Volkan Soner; Orkçu, Mediha; Orkçu, H. Hasan (Springer, 2021)Data envelopment analysis (DEA) is a very effective management tool in assessing the performance of a set of decision making units (DMUs). In the efficiency evaluation using classic single stage DEA models, the internal ... -
A novel approach for determining common weights in two division network DEA: a case study of Science and technology parks in Turkey
Özsoy, Volkan Soner; Belgin, Önder; Balkan, Dursun (Routledge, 2022)Data Envelopment Analysis is a popular tool for assessing the relative efficiency of units, treated as a whole unit, without considering the internal structure of decision-making units. In contrast to the conventional ... -
Performance management of OECD countries on Covid-19 pandemic: a criticism using data envelopment analysis models
Doğan, Mustafa İsa; Özsoy, Volkan Soner; Örkçü, H. Hasan (Emerald Group Holdings Ltd., 2021)The Covid-19 pandemic spread rapidly around the world and required strict restriction plans and policies. In most countries around the world, the outbreak of the disease has been serious and has greatly affected the health ... -
Resistance reactions of onion landraces collected from Turkey to the stem and bulb nematode Ditylenchus dipsaci
Yavuzaslanoğlu, Elif; Özsoy, Volkan Soner (Akdeniz Üniversitesi, 2020)A total of 27 accessions of different onion landraces from Turkey were screened for their resistance to stem and bulb nematode. The study was carried out in a growth chamber at 20°C, with a 16/8 h (light/dark) photoperiod ... -
A simplistic approach without epsilon to choose the most efficient unit in data envelopment analysis
Özsoy, Volkan Soner; Orkçu, H. Hasan; Orkçu, Mediha (Pergamon-Elsevier Science, 2021)Data envelopment analysis is a very effective mathematical instrument in assessing the performance of decision making units. In most real cases, the decision-maker need to identify a single most efficient unit. Several ... -
Structural and operational management of Turkish airports: a bootstrap data envelopment analysis of efficiency
Özsoy, Volkan Soner; Orkçu, H. Hasan (Elsevier, 2021)This paper explores the structural and operational dimensions of the efficiencies of airports. The two-stage procedure is suggested to assess the efficiencies of airports in this study. In the first-stage, Classification ... -
Use of the heuristic optimization in the parameter estimation of generalized gamma distribution: comparison of GA, DE, PSO and SA methods
Özsoy, Volkan Soner; Ünsal, Mehmet Güray; Örkcü, H. Hasan (Springer, 2020)The generalized gamma distribution (GGD) is a popular distribution because it is extremely flexible. Due to the density function structure of GGD, estimating the parameters of the GGD family by statistical point estimation ... -
A window dea based efficiency evaluation of the public airports in Turkey: 2014-2019 case
Özsoy, Volkan Soner; Pehlivanlı, Edib Ali (Academy Economic Studies, 2022)Aviation is strategically important because of its enormous contribution to the economy, as well as being the field of application and production of new technologies. The efficiency of airports comes to the fore in efficiency ...
