Faculty of Engineering

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Ergül, Özgür Salih (287)
Kök, Mustafa Verşan (244)
Akın, Tayfun (230)
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Özgüven, Hasan Nevzat (211)

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Condensed Matter Physics (455)
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1961 - 1979 (2076)
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Recent Submissions

Privacy-preserving federated machine learning on FAIR health data: A real-world application
Sınacı, Ali Anıl; Gencturk, Mert; Alvarez-Romero, Celia; Laleci Erturkmen, Gokce Banu; Martinez-Garcia, Alicia; Escalona-Cuaresma, María José; Parra-Calderon, Carlos Luis (2024-12-01)
Objective: This paper introduces a privacy-preserving federated machine learning (ML) architecture built upon Findable, Accessible, Interoperable, and Reusable (FAIR) health data. It aims to devise an architecture for exec...
Isotropic gap formation, localization, and waveguiding in mesoscale Yukawa-potential amorphous structures
Sarihan, Murat Can; Gövdeli, Alperen; Lan, Zhihao; Yilmaz, Yildirim Batuhan; Erdil, Mertcan; Wang, Yupei; Aras, Mehmet Sirin; Yanik, Cenk; Panoiu, Nicolae Coriolan; Wong, Chee Wei; Kocaman, Serdar (2024-12-01)
Amorphous photonic structures are mesoscopic optical structures described by electrical permittivity distributions with underlying spatial randomness. They offer a unique platform for studying a broad set of electromagneti...
Traditional seismic hazard analyses underestimate hazard levels when compared to observations from the 2023 Kahramanmaras earthquakes
Altindal, Abdullah; Askan Gündoğan, Ayşegül (2024-12-01)
A sequence of two major earthquakes, Mw7.8 Pazarcik, and Mw7.5 Elbistan, struck Southeastern Turkey in February 2023. The large magnitudes of the earthquakes and the short time between the two events raised questions about...
Tungsten oxide filled nanofibers for optical limiting in near infrared region
PEPE, YASEMİN; AKKOYUN, ŞERİFE; Asci, Nurcan; Cakır, Onuralp; Tutel, Yusuf; Emrah Unalan, Husnu; KARATAY, AHMET; ELMALI, AYHAN (2024-09-01)
In this study, tungsten trioxide (WO3) nanoparticles synthesized by a slightly modified reduction method were used as nanofillers in polyvinylpyrrolidone (PVP) nanofibers produced via electrospinning. SEM images revealed w...
Unravelling temperature-dependent molecular changes in hydrated wheat and maize starches using 1H time-domain NMR
van Rooyen, Jana; Grunin, Leonid; Öztop, Halil Mecit; Kruk, Danuta; Manley, Marena (2024-08-01)
This study proved that time-domain NMR (TD-NMR) experiments can accurately demonstrate the interaction between starch (wheat and maize) and water and the distribution of water molecules in starch-water systems during heati...
A Numerical Investigation of Longitudinal Track–Bridge Interaction in Simply Supported Precast Concrete Girder Railway Bridges
Ozturk, Alper; Baran, Eray; Askan Gündoğan, Ayşegül (2024-08-01)
In railway tracks, additional stresses occur in rails due to interaction between the rail and the bridge superstructure, which is a phenomenon known as track–bridge interaction (TBI). The additional rail stresses (ARSs) de...
Potential-based reward shaping using state–space segmentation for efficiency in reinforcement learning
Bal, Melis İlayda; Aydın, Hüseyin; İyigün, Cem; Polat, Faruk (2024-08-01)
Reinforcement Learning (RL) algorithms encounter slow learning in environments with sparse explicit reward structures due to the limited feedback available on the agent's behavior. This problem is exacerbated particularly ...
WLAV state estimation based topology error detection and identification in distribution networks with limited number of measurements
Parlaktuna, Kemal; Dursun, Erk; Göl, Murat (2024-07-01)
Rapidly populating renewable energy sources and storage units at the distribution system, made it crucial to monitor the system in real-time. This necessity brings new challenges and business opportunities for the distribu...
A novel CFD-ANN approach for plunger valve optimization: Cost-effective performance enhancement
Kaak, Abdul Rahman Sabra; Çelebioğlu, Kutay; Bozkuş, Zafer; Ulucak, Oğuzhan; Aylı, Ece (2024-07-01)
This paper introduces a novel computational fluid dynamics-artificial neural network (CFD-ANN) approach that has been devised to enhance the efficiency of plunger valves. The primary emphasis of this research is to achieve...
Effect of flame characteristics on an isolated ethanol droplet evaporating through stagnation methane/air flames: An experimental and numerical study
Kaya Eyice, Deniz; Karaca, Mehmet; Halter, Fabien; Gökalp, İskender; Chauveau, Christian (2024-07-01)
A single ethanol droplet evaporation through laminar methane/air stagnation flame is investigated at lean, stoichiometric and rich conditions experimentally and numerically. For the droplets having initial diameters of 20-...
Method development for estimation of bleed momentum coefficient using surface pressure measurements and in situ hot wire calibration
Çetin, Cenk; Yavuz, Mehmet Metin (2024-07-01)
Recently, as a passive flow control method, bleeding technique allowing flow of upstream towards suction side by interior passages, has been utilized on non-slender delta wing planforms, where effective geometries can enha...
Optimization of variable pitch milling tools for improved chatter stability
Özşahin, Orkun (2024-06-30)
Chatter is an important problem in machining operations which causes poor surface quality, increased tool wear, failure of cutting tool and even machine tool, and excessive noise during machining hence reduced productivity...
Non-invasive real-time diagnosis of PMSM faults implemented in motor control software for mission critical applications
Demirel, Aykut; Keysan, Ozan; El-Dalahmeh, Ma'd; Al-Greer, Maher (2024-06-15)
The machine's health should be continuously monitored, or a test should be applied on a regular basis to predict failure before fatal damage is incurred. Unexpected failures, particularly in mission-critical applications, ...
Search for carbon additives in Co-free Ni(OH)2 cathodes for NiMH batteries
Darıcıoğlu, Necdet Özgür; Öztürk, Tayfur (2024-06-15)
In this study, carbon black and plasma black are used as conductive additives solely or in combination to explore the possibility of replacing cobalt based compounds as additive in NiMH cathodes. Two production methods, na...
A non-iterative boundary element formulation for nonlinear viscoelasticity
Akay, Ahmet Arda; Gürses, Ercan; Göktepe, Serdar (2024-06-01)
In this study, we propose a non-iterative boundary element method (BEM) of highly nonlinear viscoelasticity in time domain. The computationally attractive iteration-free algorithmic structure is achieved by the linearizati...
A life cycle assessment of the membrane processes applied for salt recovery from reactive dyeing wastewater
Şimşek, Naz Zeynep; Yetiş, Ülkü (2024-06-01)
The environmental impacts of membrane treatment for salt and water recovery from reactive dyeing wastewater are assessed using the Life Cycle Assessment (LCA) framework. Three membrane treatment options (UF-only, NF-only, ...
Fuzzy Einstein-based decision-making model for the evaluation of site selection criteria of floating photovoltaic system
Melek, Abiddin Berhan; Gökmener, Serkan; Haspolat, Emre; Çiçek, Doğa Derman; Deveci, Muhammet; Oğuz, Elif; Khorasanchi, Mahdi (2024-06-01)
The site selection step is one of the milestones required to ensure the success of a renewable energy project. The present study proposes a novel framework for the suitable site selection of floating photovoltaic (FPV) sys...
Multichannel multimodal piezoelectric middle ear implant concept based on MEMS technology for next-generation fully implantable cochlear implant applications
Pirim, Feyza; Atik, Ali Can; Yüksel, Muhammed Berat; Yılmaz, Akın Mert; UĞUR, MEHMET BİROL; Tunalı, Selçuk; BATU, AYKAN; Aslan, Mahmut Kamil; Özer, Mehmet Bülent; Külah, Haluk (2024-06-01)
This paper introduces a unique multimode, multichannel piezoelectric vibration sensor for the next-generation fully implantable cochlear implant (FICI) systems. The sensor, which can be implanted on the middle ear chain to...
Self-composite silk fibroin membranes for guided bone regeneration: 1 material 3 architectures with intrinsic integrity
Atila, Deniz; Gürses, Senih; Tezcaner, Ayşen (2024-06-01)
Silk fibroin (SF) takes attention in tissue engineering due to unique features, e.g., excellent biocompatibility/biodegradability with superior mechanical/thermal properties despite its lightweight. Guided bone regeneratio...
The effect of foot somatosensory loss in postural control during Functional reach test in patients with diabetic polyneuropathy: A controlled study
Kahveci, Abdulvahap; Cengiz, Berat Can; Alcan, Veysel; Gürses, Senih; ZİNNUROĞLU, MURAT (2024-06-01)
Background: In patients with diabetic polyneuropathy (DPN), differences in postural control due to losing the lower limb somatosensory information were reported. However, it is still unclear by which mechanisms the dynamic...
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