Graduate School of Natural and Applied Sciences

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Hasırcı, Vasıf Nejat (245)
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Recent Submissions

Solution processed aluminum-doped ZnO thin films for transparent heater applications Tonbul, Beyza; CAN, HİLAL; Öztürk, Tayfur; AKYILDIZ, HASAN (2021-06-01) A study was carried out to tailor the properties of ultrasonic spray pyrolysis deposited Al-doped ZnO (AZO) thin films suitable for transparent heater applications. For this purpose, the influences of solvent/precursor typ...
The performance of polyethersulfone nanocomposite membrane in the removal of industrial dyes Mahmoudian, Mehdi; Ghasemıkouchameshgı, Mahmoud (2021-05-14) © 2021 Elsevier LtdIn the present study, graphene oxide was functionalized by hyperbranched epoxy and then used as an additive in the polyethersulfone membrane. The process of preparation and characterization of the synthe...
Investigation of wind turbine wakes and wake recovery in a tandem configuration using actuator line model with LES Önel, Hüseyin Can; Tuncer, İsmail Hakkı (2021-04-30) © 2021 Elsevier LtdTurbulent flow fields behind wind turbines are investigated using LES and Actuator Line Model with OpenFOAM on locally clustered Cartesian grids in a parallel computing environment. Wake interactions bet...
Error quantification in crack measurement of building materials using terrestrial laser scanning (tls) Oytun, Mert; Atasoy Özcan, Güzide; Department of Civil Engineering (2021-4-8) Cracks are the most common and crucial indicators giving clues about the as-is condition of structures. Moreover,they have always been a major concern for public safety, as they are pioneers that point to issue...
Determination of coarse aggregate morphological indices and shape properties by 3d photogrammetry method Rashidzade, Isfandiyar ; Öztürk, Hande Işık; Department of Civil Engineering (2021-4-8) The morphological properties of the aggregatesplaya crucial role in the performance of the pavements. Therefore, thereexist various empirical methods and image-based approaches that directly or indirect...
Intra- and Inter-Cluster Link Scheduling in Ad Hoc Networks Eksert, Mustafa Levet; Onur, Ertan; Department of Computer Engineering (2021-4-7) While clustering improves the scalability of ad hoc networks in comparison to flattopologies, it introduces additional challenges for resource scheduling when contention-free medium access is employed. This thesis address...
Field-dependent NMR relaxometry for Food Science: Applications and perspectives Ateş, Elif Gökçen; Domenici, Valentina; Florek-Wojciechowska, Małgorzata; Gradišek, Anton; Kruk, Danuta; Maltar-Strmečki, Nadica; Öztop, Halil Mecit; Ozvural, Emin Burcin; Rollet, Anne-Laure (2021-04-01) © 2021 Elsevier LtdBackground: Nuclear Magnetic Resonance (NMR) relaxometry is widely used for food products characterization. In order to exploit the full potential of the relaxation methods one can look at magnetic field...
Rhodium(0), Ruthenium(0) and Palladium(0) nanoparticles supported on carbon-coated iron: Magnetically isolable and reusable catalysts for hydrolytic dehydrogenation of ammonia borane Akbayrak, Serdar; ÇAKMAK, GÜLHAN; Öztürk, Tayfur; Özkar, Saim (2021-04-01) We report the synthesis of magnetically isolable ruthenium(0), rhodium(0), and palladium(0) nanoparticles, supported on carbon-coated magnetic iron particles, and their employment as catalysts in hydrolysis of ammonia bora...
Aerodynamic shape optimization of a wing using 3d flow solutions with su2 and response surface methodology Yıldırım, Berkay Yasin; Tuncer, İsmail Hakkı; Department of Aerospace Engineering (2021-4) In this study, the aerodynamic shape optimization of a wing is performed by using 3D flow solutions together with response surface methodology. The purpose of this study is to optimize the aerodynamic shape of a wing to ac...
Evaluating Oxygen Tensions Related to Bone Marrow and Matrix for MSC Differentiation in 2D and 3D Biomimetic Lamellar Scaffolds Sayin, Esen; Baran, Erkan Turker; Elsheikh, Ahmed; Mudera, Vivek; Cheema, Umber; Hasırcı, Vasıf Nejat (2021-04-01) The physiological O-2 microenvironment of mesenchymal stem cells (MSCs) and osteoblasts and the dimensionality of a substrate are known to be important in regulating cell phenotype and function. By providing the physiologi...
Behaviour of PLA/POSS nanocomposites: Effects of filler content, functional group and copolymer compatibilization Meyva Zeybek, Yelda; Kaynak, Cevdet (2021-04-01) The main purpose of this study was to investigate influences of three parameters on the mechanical and thermal properties of the polylactide (PLA) matrix nanocomposites filled with polyhedral oligomeric silsesquioxane (POS...
In vitro digestibility of rare sugar (D-allulose) added pectin-soy protein gels Ateş, Elif Gökçen; Ozvural, Emin Burcin; Oztop, Mecit H. (2021-04-01) Confectionery gels are known to be high-caloric products due their high sugar content. Changing their formulations by substituting the sugar with alternative natural sweeteners and functionalising them, the addition of pro...
Determination of physical and chemical properties of oleogels prepared with olive oil and olive-based emulsifier Erinc, Hakan; Okur, İlhami (2021-04-01) This study aimed to investigate the use of olive-based emulsifier (OBE), as an oleogelator, in the production of olive oil oleogels and to determine some physical and chemical properties of oleogels. For this purpose, oliv...
Design and kinematic analysis of a novel rehabilitative robotic walking simulation device Kose, Kemal Cem; Özgören, Mustafa Kemal; Tekce, Ferzende; DÖNER, NİMETİ (2021-04-01) This paper presents an original rehabilitative robotic walking simulation device. As a novel feature, it can duplicate the walking motion of the feet completely by including the motion of the metatarsophalangeal joints as ...
Estimation of partially observed multiple graph signals by learning spectrally concentrated graph kernels Turhan, Gülce; Vural, Elif; Department of Electrical and Electronics Engineering (2021-3-31) Graph models provide flexible tools for the representation and analysis of signals defined over domains such as social or sensor networks. However, in real applications data observations are often not available over the wh...
Midcourse and final phase path planning for air vehicles to avoid countermeasures Ataeli, Berk; Leblebicioğlu, Mehmet Kemal; Department of Electrical and Electronics Engineering (2021-3-25) Path planning is a fundamental element of various common fields, such as robotics, computer animation, and wireless sensor networks. In this study, path planning for air vehicles is investigated in two phases. For the midc...
Kill analysis tool for missiles equipped with proximity fuzes Öztürk, Ece; Kutay, Ali Türker; Department of Aerospace Engineering (2021-3-18) In this thesis study, a developed kill analysis tool for the missiles having proximity fuzes is presented. Some of today’s missiles have proximity fuze, and this type of missiles’ warhead can be detonated not when the miss...
Decentralized inventory planning with transshipments in a multi-project environment Soylu Nazlı, Duygu; Bakal, İsmail Serdar; Savaşaneril Tüfekci, Seçil; Department of Industrial Engineering (2021-3-17) Many companies in project-based industries manage their inventories in a decentralized manner on a project-by-project basis. Even if one project has excess supply of a material, the other may have excess demand of it, whic...
Deep Learning in the Presence of Label Noise: A Meta-Learning Approach Algan, Görkem; Ulusoy, İlkay; Department of Electrical and Electronics Engineering (2021-3-12) Image classification systems recently made a giant leap with the advancement of deep neural networks. However, these systems require an excessive amount of labeled data to be adequately trained. Gathering a correctly annot...
K-median clustering algorithms for time series data Gökçem, Yiğit; İyigün, Cem; Department of Industrial Engineering (2021-3-10) Clustering is an unsupervised learning method, that groups the unlabeled data forgathering valuable information. Clustering can be applied on various types of data. Inthis study, we have focused on time series clustering. ...

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