Mühendislik ve Doğa Bilimleri Fakültesi
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Mathematical Engineering
Güncel Gönderiler
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Stability of periodic waves for the defocusing fractional cubic nonlinear Schrödinger equation
(Elsevier B.V., 2024)In this paper, we determine the spectral instability of periodic odd waves for the defocusing fractional cubic nonlinear Schrödinger equation. Our approach is based on periodic perturbations that have the same period as ... -
Dual-polarized wideband 5G N77 band slotted MIMO antenna system for next-generation smartphones
(Institute of Electrical and Electronics Engineers Inc., 2024)In this work, a slotted wideband eight-element multiple-input multiple-output (MIMO) antenna system is presented, which covers the N77 (3.2-4.2 GHz) frequency band. The MIMO antennas are printed on a 0.8-mm-thick FR-4 ... -
Fuzzy standardized precipitation index (FSPI) for drought early warning procedure
(Springer, 2024)There are several standardized meteorological, hydrological, agricultural, and environmental indices for drought classification into a set of dry categories all of which are derived from the basic concept of standardized ... -
Orthogonal time frequency space multiple access using index modulation
(Institute of Electrical and Electronics Engineers Inc., 2023)Orthogonal time frequency space (OTFS) is a recent two-dimensional modulation technique utilizing delay-Doppler domain and nominated as a promising candidate waveform for beyond 5G communication systems. By leveraging both ... -
Positive solutions of sublinear Emden-Fowler equation
(Springer Wien, 2023)We consider the existence of a positive solution to the sublinear Emden-Fowler equations. An existence of nonoscillating solution to the sublinear Emden-Fowler equations with right hand side is also presented. -
Error performance enhancement and complexity reduction in OFDM systems via coordinate interleaving under practical impairments
(Turkiye Klinikleri, 2024)In this work, subcarrier coordinate interleaving (CI) is implemented to orthogonal frequency division multiplexing (OFDM) systems with the aim of both enhancing the error performance and reducing the implementation complexity. ... -
Assessing wet and dry periods using Standardized Precipitation Index Fractal (SPIF) and polygons: A novel approach
(Multidisciplinary Digital Publishing Institute (MDPI), 2024)In the open literature, there are numerous studies on the normal and extreme (flood and drought) behavior of wet and dry periods based on the understanding of the standard precipitation index (SPI), which provides a series ... -
Cyber–physical system architecture of autonomous robot ecosystem for industrial asset monitoring
(Elsevier B. V., 2024)Driven by advancements in Industry 4.0, the Internet of Things (IoT), digital twins (DT), and cyber–physical systems (CPS), there is a growing interest in the digitalizing of asset integrity management. CPS, in particular, ... -
On the Kadomtsev–Petviashvili equation with double-power nonlinearities
(Elsevier B.V., 2024)In this paper, we study the generalized KP equation with double-power nonlinearities. Our investigation covers various aspects, including the existence of solitary waves, their nonlinear stability, and instability. Notably, ... -
Sequency index modulation: A novel index modulation for delay-sequency domain waveforms
(Institute of Electrical and Electronics Engineers Inc., 2023)In this letter, the sequency domain is introduced as a novel resource to propose a new index modulation, which is named sequency index modulation (SeIM). In SeIM, information bits are implicitly conveyed through the indices ... -
An X-band class-B push-pull power amplifier on a 0.25 μm SiGe-C process
(Institute of Electrical and Electronics Engineers Inc., 2023)This paper presents design of an X-band power amplifier (PA) with Class-B push-pull configuration in 0.25-μm SiGe-C Heterojunction Bipolar Transistor (HBT) BiCMOS process. The PA consists of input balun, driver stage, ... -
Optimizing percutaneous pulmonary valve implantation with patient-specific 3D-printed pulmonary artery models and hemodynamic assessment
(Frontiers Media SA, 2024)Background: Percutaneous pulmonary valve implantation (PPVI) has emerged as a less invasive alternative for treating severe pulmonary regurgitation after tetralogy of Fallot (TOF) repair in patients with a native right ... -
Dual band (28/38 GHz) antenna design for 5G mmWave communication networks
(Institute of Electrical and Electronics Engineers Inc., 2023)The goal of the 5G millimeter-wave (mmWave) technology is to outperform the earlier wireless technology generations in terms of data throughput, latency, and connection reliability. It has the potential to revolutionize ... -
Surgical and transcatheter pulmonary valve replacement in patients with repaired tetralogy of Fallot: Cardiac magnetic resonance imaging characteristics and morphology of right ventricular outflow tract
(Springer, 2023)BackgroundPulmonary valve replacement is recommended in patients with repaired tetralogy of Fallot based on cardiac magnetic resonance imaging (MRI) criteria. This procedure is performed by surgical or transcatheter ... -
Ionic liquid based treatment - A potential strategy to modify bacterial cellulose
(Wiley, 2023)The constant need for advanced materials led by modern research continues the exploitation of old remedies and innovation to find new solutions. The use of ionic liquids (ILs) as solvents has revolutionized modern chemical ... -
Network-independent and user-controlled RIS: An experimental perspective
(IEEE Computer Society, 2023)The march towards 6G is accelerating and future wireless network architectures require enhanced performance along with significant coverage especially, to combat impairments on account of the wireless channel. Reconfigurable ... -
Eight element dual-band MIMO array antenna for modern fifth generation mobile phones
(Elsevier GmbH, 2024)In this paper, an eight-element multiple-input multiple-output (MIMO) antenna with dual-band response is designed for fifth-generation (5G) mobile devices. The proposed MIMO systems’ radiators are placed in the inner side ... -
Cyber-WISE: A cyber-physical deep wireless indoor positioning system and digital twin approach
(Multidisciplinary Digital Publishing Institute (MDPI), 2023)In recent decades, there have been significant research efforts focusing on wireless indoor localization systems, with fingerprinting techniques based on received signal strength leading the way. The majority of the suggested ... -
Non-destructive covalent surface alkylation of graphitic carbon nitride for enhanced photocatalytic dye degradation in water
(Elsevier B.V., 2024)Graphitic carbon nitride (g-CN) is a promising material for various applications due to its unique electronic, optical, and photocatalytic properties, tunable by surface modifications. Herein, a novel and straightforward ... -
Centralized healthcare database for ensuring better healthcare: Are we lagging behind?
(Professional Medical Publications, 2024)Database is an organized set of large information gathered and stored electronically to be retrieved whenever required. The systematically stored information can be ...