Faculty of Engineering

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Ergül, Özgür Salih (272)
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Recent Submissions

Efficient physics-based learned reconstruction methods for real-time 3D near-field MIMO radar imaging Manisali, Irfan; Oral, Okyanus; Öktem, Sevinç Figen (2024-01-01) Near-field multiple-input multiple-output (MIMO) radar imaging systems have recently gained significant attention. These systems generally reconstruct the three-dimensional (3D) complex-valued reflectivity distribution of ...
PdH α-phase is associated with residual oxygen as revealed by in situ 1H NMR measurements and DFT-NMR estimations Mete, Ersen; Yılmaz, Begüm; Üner, Deniz (2023-12-30) An experimental and DFT study was conducted to investigate the chemical nature of α and β PdH phases in Pd/TiO2 through the detailed analysis of their 1H NMR chemical shifts. α-PdH states are identified with shielded 1H NM...
Synthesis of heterostructured nanocomposites as supercapacitor electrodes and investigation of their electrochemical properties Aytürk, Seden Ezgi Yazar; ÇITAK, ALİME; Aydın, Elif Can; Durukan, Mete Batuhan (2023-12-20) High performance supercapacitors have taken their place in the world as one of the research areas emerging in order to feed increasing energy consumption. By using metal oxides in electrode structures, supercapacitors have...
Preliminary documentation of coseismic ground failure triggered by the February 6, 2023 Türkiye earthquake sequence Görüm, Tolga; Tanyas, Hakan; Karabacak, Furkan; Yılmaz, Abdüssamet; Girgin, Serkan; Allstadt, Kate E.; Süzen, Mehmet Lütfi; Burgi, Paula (2023-12-20) The devastating Kahramanmaraş earthquake sequence occurred on February 6, 2023. Two main events, Mw 7.8 and Mw 7.5 occurred 9 hours apart, affected 11 cities in Turkey, and subjected an area of ∼90,000 km2 to shaking level...
Sodium salt surface interactions affect single particle combustion behavior of biomass, coal, and their chars Akın, Süleyman Şener; Akgül, Alican; Kazanç Özerinç, Feyza (2023-12-15) Sodium salt additions provide an effective route for tuning the combustion behavior of solid fuels. The salt-fuel surface interactions play a key role in combustion, as demonstrated by low heating rate experiments. High he...
Evaluation of mortar film thickness of dry process crumb rubber modified warm mix asphalt concrete utilizing 2-dimensional images Yucel, Ayhan Oner; Öztürk, Hande Işık (2023-12-15) Asphalt mortar film thickness and its distribution are accepted to be strong parameters that affect the durability and performance of asphalt mixtures. This study focuses on the effects of the Warm Mix Asphalt (WMA) additi...
Linear solvation energy relationships for adsorption of aromatic organic compounds by microplastics Hatinoglu, Dilara; Adan, Abdulrahman; Perreault, Francois; İmamoğlu, İpek; Apul, Onur G. (2023-12-05) This study develops predictive models for adsorption of organic compounds (OC) by microplastics using linear solvation energy relationship (LSER). The adsorption mechanism of aromatic OCs by microplastics was investigated ...
MIMO asynchronous MAC with faster-than-Nyquist (FTN) signaling Zhang, Zichao; Yüksel Turgut, Ayşe Melda; Yanıkömeroğlu, Halim; Ng, Benjamin K.; Lam, Chan-Tong (2023-12-04)
Blind study site assessment of shear-wave velocity at Kumamoto City, Japan, using direct-fitting SPAC methods Asten, Michael; Askan Gündoğan, Ayşegül; Karimzadeh, Shaghayegh (2023-12-01) The study used data acquired by the ESG6 Blind Prediction Step BP1 Working Group for purposes of facilitating a comparison of interpretation methods for obtaining shear-wave velocity profiles (Vs) from array observations o...
Design of a microfluidic device for immunoaffinity-based isolation of circulating tumor cells with minimal clogging Sen-Dogan, Begum; Yıldırım, Ender; Sahin, Sebnem; Ozgur, Ebru; Zorlu, Ozge; Külah, Haluk (2023-12-01) Combining bioaffinity-based techniques with microfluidics is an effective strategy for the selective isolation of rare circulating tumor cells (CTCs) among peripheral blood cells. In this scope, designing a microfluidic ch...
Application of segmented analysis via multivariate curve resolution with alternating least squares to 1H-nuclear magnetic resonance spectroscopy to identify different sugar sources Fuentes, Cristian A.; Öztop, Halil Mecit; Rojas-Rioseco, Macarena; Bravo, Martín; Göksu, Aylin Özgür; Manley, Marena; Castillo, Rosario del P. (2023-12-01) The different types of sugar employed in the food industry exhibit chemical similarity and are mostly dominated by sucrose. Owing to the sugar origin of and differences in production, the presence of certain minor organic ...
Novel barium-doped-baghdadite incorporated PHBV-PCL composite fibrous scaffolds for bone tissue engineering Sadreddini, Sanaossadat; Jodati, Hossein; Evis, Zafer; Keskin, Dilek (2023-12-01) Bioceramic/polymer composites have dragged a lot of attention for treating hard tissue damage in recent years. In this study, we synthesized barium-doped baghdadite (Ba-BAG), as a novel bioceramic, and later developed fibr...
Influence of multiple parameters on the crystallinity of dairy powders Güner, Selen; Grunin, Leonid; Kaner, Ozlem; Şümnü, Servet Gülüm; Öztop, Halil Mecit (2023-12-01) Caking in powdered foods causes practical difficulties in solubilising the powder and interrupts the free flow from the container during manufacture and final use. This research investigated the caking tendency of cheese a...
An analysis of ambulance location problem from an equity perspective Akdogan, M. Altan; Bayındır, Zeynep Pelin; İyigün, Cem (2023-12-01) In this paper, we study the Emergency Medical Services (EMS) vehicle location problem from an equity perspective. We construct several mathematical programming models using a set of objective functions and constraints comm...
An improved peridynamic approach for fatigue analysis of two dimensional functionally graded materials Altay, Ugur; DÖRDÜNCÜ, MEHMET; Kadıoğlu, Fevzi Suat (2023-12-01) This study investigates the fatigue behavior of functionally graded materials (FGMs) within an enhanced peridynamic (PD) framework that eliminates the need for surface and volume correction factors. FGMs offer mechanical a...
Development and validation of a digital twin of the human lower jaw under impact loading by using non-linear finite element analyses Demir, Osman; Uslan, Ibrahim; Büyük, Murat; SALAMCI, METİN UYMAZ (2023-12-01) Mandibular fractures are one of the most frequently observed injuries within craniofacial region mostly due to tumor-related problems and traumatic events, often related to non-linear effects like impact loading. Therefore...
Data-driven hyperelasticity, Part II: A canonical framework for anisotropic soft biological tissues TİKENOĞULLARI, OĞUZ ZİYA; Açan, Alp Kağan; Kuhl, Ellen; Dal, Hüsnü (2023-12-01) In this work, we present a novel anisotropic data-driven hyperelasticity framework for the constitutive modeling of soft biological tissues that allows direct incorporation of experimental data into the constitutive model,...
Charge decay in the spatial afterglow of plasmas and its impact on diffusion regimes Abuyazid, Nabiel H.; Üner, Necip Berker; Peyres, Sean M.; Mohan Sankaran, R. (2023-12-01) The spatial afterglow is a region at the boundary of a non-equilibrium plasma where charged species relax into ambient equilibrium. In many applications, the spatial afterglow is the part of the plasma that interacts with ...
An explainable two-stage machine learning approach for precipitation forecast Senocak, Ali Ulvi Galip; Yılmaz, Mustafa Tuğrul; Kalkan, Sinan; Yücel, İsmail; Amjad, Muhammad (2023-12-01) A common post-processing approach to improve precipitation forecasts is to use machine learning models such as artificial neural networks (more specifically, multi-layer perceptrons) as black-box systems. These models util...
Laser seeker design with multi-focal diffractive lens Ünal, Ahmet (2023-12-01) Diffractive optical elements are increasingly favoured due to their ability to provide numerous design freedoms by adjusting the Fresnel regions. The design freedoms make it possible to meet multiple system functions in el...

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