Browsing Faculty of Engineering by Author "3"
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Adaptive OFDM-based acoustic underwater transmission: system design and experimental verification
Sadeghi, Mohammad; Elamassie, Mohammed; Uysal, Murat (IEEE, 2017)In this paper, we present the design and implementation of a software defined orthogonal frequency division multiplexing (OFDM)-based underwater acoustic (UWA) communication system with link adaptation. Our system ... -
Advanced slurry formulations for new generation chemical mechanical planarization (CMP) applications
Başım, Gül Bahar; Karagöz, Ayşe; Özdemir, Zeynep (Cambridge University Press, 2012-01)Chemical Mechanical Planarization (CMP) is widely used to ensure planarity of metal and dielectric surfaces to enable photolithography and hence multilevel metallization in microelectronics manufacturing. The aim of this ... -
Advantages of application-based scheduling for indoor femtocells
Mungan, Devin; Ferazoğlu, Gülden; Sunay, Mehmet Oğuz; Civanlar, Mehmet Reha; Kaytaz, B. (ACM, 2011)This paper presents the necessity of application-based scheduling to maintain QoS requirements of all active applications in an indoor femtocell. A novel scheduler is proposed which takes into account the quality of service ... -
ADVISOR: An adjustable framework for test oracle automation of visual output systems
Genç, A. E.; Sözer, Hasan; Kıraç, Mustafa Furkan; Aktemur, Tankut Barış (IEEE, 2020-09)Test oracles differentiate between the correct and incorrect system behavior. Automation of test oracles for visual output systems mainly involves image comparison, where a snapshot of the output is compared with respect ... -
Alt kesit seviyeleri arasında oy çoğunluğu ile sahne tanıma
In this paper, scene recognition problem, which is a frequently-studied field of computer vision, is tackled. Proposed algorithm utilizes bag of words (BoW) method along with considering sub-segments in the image during ... -
Alto sunuculu, eş görevli ağlarda dosya paylaşımı
Kökten, Koray; Kırkgül, İ. Serkan; Sunay, Mehmet Oğuz (IEEE, 2012)In current Internet, the most significant and the growing promotion rate of the network resources usage is due to the Peer to Peer(P2P) applications. These studies show us that the main traffic type, that Internet Service ... -
An application of unrelated parallel machine scheduling with sequence-dependent setups at Vestel Electronics
Ekici, Ali; Elyasi, Milad; Özener, Okan Örsan; Sarıkaya, M. B. (Elsevier, 2019-11)In this paper, we analyze a variant of the unrelated parallel machine scheduling problem with the objective of minimizing the total tardiness and earliness in the presence of sequence-dependent setups, unequal release ... -
Automatically learning usage behavior and generating event sequences for black-box testing of reactive systems
Kıraç, Mustafa Furkan; Aktemur, Tankut Barış; Sözer, Hasan; Gebizli, C. Ş. (The ACM Digital Library, 2019-06)We propose a novel technique based on recurrent artificial neural networks to generate test cases for black-box testing of reactive systems. We combine functional testing inputs that are automatically generated from a model ... -
A Cahn-Hilliard modeling of metal oxide thin films for advanced CMP applications
Karagöz, Ayşe; Şengül, Yasemin; Başım, Gül Bahar (ECS, 2014)Chemical mechanical planarization (CMP) process enables topographic selectivity through formation of a protective oxide thin film on the recessed locations of the deposited metal layer, while a continuous chemical oxidation ... -
Changing passband on microstrip hairpin band-pass filter
Benar, Cem; Tafida, Ibrahim Abbas; Kündüz, Mehmet Polat; Imeci, T.; Saral, A. (IEEE, 2016)In this work, a microstrip hairpin band-pass filter is designed and simulated in Sonnet Suite, a 3-D Planar Electromagnetic simulation tool [1]. A microstrip hairpin band-pass filter in any desired pass band can be obtained ... -
Channel modeling and performance characterization of underwater visible light communications
Elamassie, Mohammed; Miramirkhani, Farshad; Uysal, Murat (IEEE, 2018-07-03)Underwater visible light communication (UVLC) has emerged as an attractive complementary solution to long-range acoustic communication and is able to achieve much higher data speeds. In this paper, we investigate the ... -
Characterization of chemically modified thin films for optimization of metal CMP applications?
Başım, Gül Bahar; Karagöz, Ayşe; Özdemir, Zeynep (Cambridge University Press, 2013)Metal CMP applications necessitate the formation of a protective oxide film in the presence of surface active agents, oxidizers, pH regulators and other chemicals to achieve global planarization. Formation and mechanical ... -
CoMP-based dynamic handover for vehicular VLC networks
Demir, Muhammet Selim; Eldeeb, Hossıen Badr; Uysal, Murat (IEEE, 2020-09)Visible light communication (VLC) has emerged as a potential wireless connectivity solution for infrastructure-to-vehicle networks where street lights can be configured to serve as access points. In this letter, we propose ... -
A comparative study for the junction temperature of green light-emitting diodes
Özlük, Burak; Muslu, Ahmet Mete; Arık, Mehmet (IEEE, 2019-10)Solid-state lighting devices offer a wide variety of color options applicable for general and automotive lighting, various display systems, and a number of niche applications. As they get smaller, generated heat fluxes ... -
Cooperative visible light communications
Narmanlioglu, Ömer; Caglar Kizilirmak, R.; Miramirkhani, Farshad; Uysal, Murat (Springer Science+Business Media, 2016)In this chapter, we explore the concept of cooperative transmissions in the context of visible light communications (VLC). An indoor office space is considered with two light sources; the one at the ceiling is connected ... -
Cooperative visible light communications with full-duplex relaying
Narmanlıoğlu, Ömer; Kizilirmak, R. Ç.; Miramirkhani, Farshad; Uysal, Murat (IEEE, 2017-06)In this paper, we investigate cooperative visible light communication (VLC) system where an intermediate light source acts as a relay terminal. We assume that relay terminal operates in full-duplex mode. In contrast to ... -
CPU design simplified
Yıldız, A.; Uğurdağ, Hasan Fatih; Aktemur, Tankut Barış; İskender, Deniz; Gören, S. (IEEE, 2018-12-10)The first goal of this paper is to introduce a simple and customizable soft CPU named VerySimpleCPU (VSCPU), which could be easily implemented on FPGAs with a complete toolchain including instruction set simulator, assembler, ... -
Dağıtık bir openflow kontrol birimi mimarisi
Yazıcı, Volkan; Sunay, Mehmet Oğuz; Ercan, Ali Özer (IEEE, 2012)Considering the modern internet traffic rates, the network architecture is of particular importance as the running services itself. On the other hand, due to the increasing complexity and black-box structure of the available ... -
Democratization of HPC cloud services with automated parallel solvers and application containers
Muhtaroğlu, Nitel; Arı, İsmail; Kolcu, Birkan (Wiley, 2018-11-10)In this paper, we investigate several design choices for HPC services at different layers of the cloud computing architecture to simplify and broaden its use cases. We start with the platform-as-a-service (PaaS) layer and ... -
Description-aware fashion image inpainting with convolutional neural networks in coarse-to-fine manner
Kınlı, Osman Furkan; Özcan, Barış; Kıraç, Mustafa Furkan (The ACM Digital Library, 2020-04-14)Inpainting a particular missing region in an image is a challenging vision task, and promising improvements on this task have been achieved with the help of the recent developments in vision-related deep learning studies. ...
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