Browsing Mühendislik Fakültesi / Faculty of Engineering by Issue Date
Now showing items 21-40 of 174
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Hybridizing a fuzzy multi-response Taguchi optimization algorithm with artificial neural networks to solve standard ready-mixed concrete optimization problems
(2016)In this study, a fuzzy multi-response standard ready-mixed concrete (SRMC) optimization problem is addressed. This problem includes two conflicting quality optimization objectives. One of these objectives is to minimize ... -
Vacuum and nonvacuum black holes in a uniform magnetic field
(2016)We modify and generalize the known solution for the electromagnetic field when a vacuum, stationary, axisymmetric black hole is immersed in a uniform magnetic field to the case of nonvacuum black holes (of modified gravity) ... -
Engineering long shelf life multilayer biologically active surfaces on microfluidic devices for point of care applications
(2016)Although materials and engineered surfaces are broadly utilized in creating assays and devices with wide applications in diagnostics, preservation of these immuno-functionalized surfaces on microfluidic devices remains a ... -
Cyclic and heteroclinic flows near general static spherically symmetric black holes
(2016)We investigate the Michel-type accretion onto a static spherically symmetric black hole. Using a Hamiltonian dynamical approach, we show that the standard method employed for tackling the accretion problem has masked some ... -
Astrophysical flows near f (T) gravity black holes
(2016)In this paper, we study the accretion process for fluids flowing near a black hole in the context of f (T) teleparallel gravity. Specifically, by performing a dynamical analysis by a Hamiltonian system, we are able to find ... -
Wormhole solutions sourced by fluids, II: three-fluid two-charged sources
(2016)Lack of a consistent metric for generating rotating wormholes motivates us to present a new one endowed with interesting physical and geometrical properties. When combined with the generalized method of superposition of ... -
New Formulations for the Orienteering Problem
(2016)Problems associated with determining optimal routes from one or several depots (origin, home city) to a set of nodes (vertices, cities, customers, locations) are known as routing problems. The Traveling Salesman Problem ... -
Integrating features for accelerometer-based activity recognition
(2016)Activity recognition is the problem of predicting the current action of a person through the motion sensors worn on the body. The problem is usually approached as a supervised classification task where a discriminative ... -
Wormhole solutions sourced by fluids, I: Two-fluid charged sources
(2016)We briefly discuss some of the known and new properties of rotating geometries that are relevant to this work. We generalize the analytical method of superposition of fields, known for generating nonrotating solutions, and ... -
Strong gravitational lensing by a charged Kiselev black hole
(2017)We study the gravitational lensing scenario where the lens is a spherically symmetric charged black hole (BH) surrounded by quintessence matter. The null geodesic equations in the curved background of the black hole are ... -
Cyclic and heteroclinic flows near general static spherically symmetric black holes: semi-cyclic flows - addendum and corrigendum
(2017)We present new accretion solutions of a polytropic perfect fluid onto an f(R)-gravity de Sitter-like black hole. We consider two f(R)-gravity models and obtain finite-period cyclic flows oscillating between the event and ... -
Automatic Detection of Aerial Vehicle in Cloudy Environment by Using Wavelet Enhancement Technique
(2017)Automatic target detection of surface to air surveillance and tracking systems in video applications is an important issue, because it is the first step for track initiation and continuity. Target detection can be readily ... -
New integer programming formulation for multiple traveling repairmen problem
(2017)The multiple traveling repairman problem (kTRP) is a generalization of the traveling repairman problem which is also known as the minimum latency problem and the deliveryman problem. In these problems, waiting time or ... -
Geographic Information System-Based AHP-TOPSIS Approach for School Site Selection: A Case Study for Ankara
(2017)Identification of school zones is a multi-criteria decision-making problem, which requires a collective evaluation of many criteria, including population density, transportation facilities, level of the population covered, ... -
Image processing based rapid upper limb assessment method
(2017)Occupational Musculoskeletal System Disorders (OMSDs) are disorders that inflict a great deal of economical burden on enterprises and nations, decrease quality, productivity and cause inability to sustain livings of ... -
Can Sleep Apnea be Detected by Heart Sounds?
(2017)Objective: It has previously been shown that there are morphological changes in hearth sounds during respiration and holding breath. In this study, for the first time in the literature, it was investigated whether sleep ... -
A novel computer-based method for measuring the acetabular angle on hip radiographs
(2017)Objective: The aim of this study was to propose a new computer based method for measuring acetabular angles on hip radiographs and to assess its practicality, sensitivity and reliability for acetabular angle measurement. ... -
The Quantitative Analysis of Uvulopalatal Flap Surgery
(2017)Objective: In this work, a new methodology based on signal processing techniques for the quantitative analysis of uvulopalatal flap surgery is proposed. Clinical assessment studies of uvulopalatal flap surgery are based ... -
Simultaneous determination of copper(II) and zinc(II) via simple acid-base titrimetry using glass pH electrode
(2018)The combination of potentiometric methods with multivariate calibration techniques allows complex mixtures to be analyzed. In this study, a new method was developed and reported for simultaneous determination of copper(II) ...