Department of Electrical and Electronics Engineering, Article

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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...
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...
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, ...
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...
LONG-TERM WIND POWER AND GLOBAL WARMING PREDICTION USING MARS, ANN, CART, LR, AND RF Yılmaz, Yavuz; Nalçacı, Gamze; Kańczurzewska, Marta; Weber, Gerhard Wilhelm (2024-06-01) The modeling of electricity generation plays a crucial role in investment and long-term planning in power systems, primarily due to the significant volatility associated with wind and solar energy sources. Nevertheless, fo...
Pre-enrichment-free detection of hepatocellular carcinoma-specific ctDNA via PDMS and MEMS-based microfluidic sensor Çağlayan Arslan, Zeynep; Okan, Meltem; Külah, Haluk (2024-05-01) The growing interest in microfluidic biosensors has led to improvements in the analytical performance of various sensing mechanisms. Although various sensors can be integrated with microfluidics, electrochemical ones have ...
Optimization of a Solution-Processed TiOx/(n)c-Si Electron-Selective Interface by Pre- and Postdeposition Treatments Beyraghi, Naser; Şahiner, Mehmet Cem; Oguz, Oguzhan; Yerci, Selçuk (2024-04-03) Developing a vacuum-free and low-temperature deposition technique for dopant-free carrier-selective materials without sacrificing their performance can reduce the fabrication cost and CO2 footprint of silicon heterojunctio...
Enhanced Near-Field Microwave Imaging System with Polarization Diversity Dalkilic, A.; Öktem, Sevinç Figen; Alatan, Lale (2024-03-01) In this letter, the impact of antenna polarization configuration and polarization diversity on the imaging quality of a near-field microwave imaging system is examined. Unlike previous works, this study also develops an ef...
Gradient-descent hardware-aware training and deployment for mixed-signal neuromorphic processors Cakal, Ugurcan; Maryada, Maryada; Wu, Chenxi; Ulusoy, İlkay; Muir, Dylan Richard (2024-03-01) Mixed-signal neuromorphic processors provide extremely low-power operation for edge inference workloads, taking advantage of sparse asynchronous computation within spiking neural networks (SNNs). However, deploying robust ...
A Multiobjective Array Beamforming Method for Arrays of Flexible Shape Meng, Chenfeng; Zhang, Yongwei; Temiz, Murat; El-Makadema, Ahmed (2024-02-01) High-performance beamforming incorporating multiple objectives for large-scale antenna arrays becomes increasingly important to improve the capacity and efficiency of wireless communication systems. The speed of synthesizi...
Predictive Modeling of Light–Matter Interaction in One Dimension: A Dynamic Deep Learning Approach Aşırım, Özüm Emre; Asirim, Ece Z.; Kuzuoğlu, Mustafa (2024-02-01) The mathematical modeling and the associated numerical simulation of the light–matter interaction (LMI) process are well-known to be quite complicated, particularly for media where several electronic transitions take place...
Design and verification of a parallel elastic robotic leg. Tanfener, Emre; Karagoz, Osman Kaan; Candan, Sinan Şahin; Turgut, Ali Emre; Yazıcıoğlu, Yiğit; Ankaralı, Mustafa Mert; Saranli, Uluc (2024-01-29) This paper presents the design and experimental verification of a parallel elastic robotic leg mechanism that aims to capture the dynamics of the linear mass-spring-damper model. The mechanism utilizes a wrapping cam mecha...
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 ...
Reduced Complexity Correlation-Based Multi-Stream DPD for Hybrid Massive MIMO Salman, Murat Babek; Ucuncu, Ali Bulut; Güvensen, Gökhan Muzaffer (2024-01-01) This paper proposes a reduced complexity digital predistortion (DPD) scheme for fully-connected hybrid beamforming systems for massive multiple-input multiple-output (MIMO) channels impaired by nonlinear power amplifiers (...
Learning Graph ARMA Processes From Time-Vertex Spectra Güneyi, Eylem Tuǧçe; Yaldiz, Berkay; Canbolat, Abdullah; Vural, Elif (2024-01-01) The modeling of time-varying graph signals as stationary time-vertex stochastic processes permits the inference of missing signal values by efficiently employing the correlation patterns of the process across different gra...
Induced Current Electro-Thermal Imaging for Breast Tumor Detection: A Numerical and Experimental Study Tanrıverdi, Volkan; Gençer, Nevzat Güneri (2024-01-01) This study proposes using magnetically induced currents in medical infrared imaging to increase the temperature contrast due to the electrical conductivity differences between tumors and healthy tissues. There are two obje...
Design, simulation, and measurement of near-zero-index shells for electromagnetic beam generation Eriş, Özgür; Ergül, Özgür Salih (2024-01-01) We present design and simulation of three-dimensional (3D) shell structures, which generate directional radiation patterns from isotropic sources thanks to their near-zero-index (NZI) characteristics, as well as realizatio...
Cross-Modal Learning via Adversarial Loss and Covariate Shift for Enhanced Liver Segmentation Ozkan, Savas; SELVER, MUSTAFA ALPER; Baydar, Bora; Kavur, Ali Emre; Candemir, Cemre; Akar, Gözde (2024-01-01) Despite the widespread use of deep learning methods for semantic segmentation from single imaging modalities, their performance for exploiting multi-domain data still needs to improve. However, the decision-making process ...
Optimal sizing of battery energy storage system for a large-scale offshore wind power plant considering grid code constraints: A Turkish case study Mokhtare, Mohammad Hossein; Keysan, Ozan (2024-01-01) Integration of large-scale wind farms (WFs) into the grid has to meet the critical constraints set in the national grid code. Wind farm operators (WFOs) are inclined to comply with these constraints and avoid heavy penalty...
Capacitor sizing of three-level neutral point clamped voltage source inverter for electric vehicles: Effects of modulation and motor characteristics Ogan, Serhat Emir; Bostancı, Emine (2024-01-01) A three-level neutral point clamped (3L-NPC) voltage source inverter (VSI) topology can be advantageous in electric vehicles with a high DC-link voltage and a high switching frequency. A bulky DC-link capacitor is not an o...

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