Featured papers on operational research and ethics

Wenstop, Fred
Miralles, Cristobal
Weber, Gerhard Wilhelm


Comparison of Intelligent Classification Techniques by Practicing a Specific Technology Audit
Berkol, A.; Kara, G.; Turk, A. (2016-09-08)
Technology audit activities arc carried out for assessment of firms' technological requirements, capacity or management capability. The aim of these assessments is to define the weaknesses of firms and develop actions in order to improve firms' technological capacity and/or technology management capability. Generally these activities are implemented with survey questionnaires. These questionnaires can be filled by managers of firms or can be implemented as an interview by independent experts. However, evalu...
BASAGAOGLU, H; Yazıcıgil, Hasan (1994-11-01)
Three models were developed and tested for the optimal capacity expansion planning in a hypothetical multiaquifer system. The response of the system was included in the models using response matrices. All models are 0/1 mixed-integer programming models and enable the determination of minimum capital investment and operation costs of well fields and associated pipeline facilities while satisfying a set of system constraints. The performances of the models are compared in terms of computational requirement...
Shape optimization of helicopter subfloor intersection element under crash loading
Türe, Mustafa Okan; Dağ, Serkan; Department of Mechanical Engineering (2017)
The aim of the crashworthiness is maintaining a survivable space for occupants and absorb crash energy as much as possible. The statistics showed that 85% of all rotorcraft accidents can be survivable. Thus, crashworthy design has direct effect on occupants' survival. This thesis analyses a longitudinal beam and lateral frame intersection point on helicopter subloor. Analysis is performed on ABAQUS Dynamic/Explicit solver. Analysis includes high deformation levels, self-contact and nonlinearities. 110 kg ma...
A Comparison of model following control systems for helicopter flight control near hover
Okçu, Ilgaz Doğa; Kutay, Ali Türker; Department of Aerospace Engineering (2015)
Helicopters are complex, coupled dynamic systems with unstable behavior. Countless studies have shown that decoupling the helicopter flight dynamics greatly reduces pilot work load and increases the handling qualities. Design guidelines such as Aeronautical Design Standard 33E-PRF (ADS-33E), which are developed as a means of measuring the handling qualities of a given helicopter, emphasizes that coupling between pitch, roll, yaw and heave degrees of freedom are undesired. ADS-33E also gives flight dynamics ...
Design and analysis of fixed load crushable column type energy absorbing mechanism for a helicopter seat
Öztürk, Gülce; Kayran, Altan; Department of Aerospace Engineering (2018)
Crashworthiness is the survivability of occupants inside a vehicle during a crash. In helicopters, crashworthiness is ensured by three subsystems; the landing gear, floor structure and the seats. Because of the critical role of the seats in helicopter crashworthiness evaluation, dynamic performance of the seat has to be studied in depth. There are different regulations in which requirements of survivable loads and crash conditions are defined. In this respect, a seat that is used in helicopter should be cer...
Citation Formats
F. Wenstop, C. Miralles, and G. W. Weber, “Featured papers on operational research and ethics,” EURO JOURNAL ON DECISION PROCESSES, pp. 1–3, 2016, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/56952.