Polen - İTÜ Akademik Açık Arşive Hoş Geldiniz

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  An improved unevenly distributed winding design to optimize winding factor families for fractional slot concentrated windings: The fraternal twin machine concept

  (Institute of electrical and electronics engineers (ieee), 2026-01-01) Halil Deveci; Derya Ahmet Kocabas; Elektrik Mühendisliği Bölümü; Kocabaş, Derya Ahmet

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  A comprehensive review of thermal energy storage technologies and their applications: Creation of a database

  (Elsevier bv, 2026-01-01) Vallese, Laura; Javadi, Hossein; Badenes, Borja; Urchueguía, Javier F.; Lombardo, Giulia; Menegazzo, Davide; URE, Zafer; Cesari, Silvia; Bottarelli, Michele; BACCEGA, Eleonora; De Carli, Michele; López, Arantza; Sanchez Sarachu, Beatriz; Mabe, Lara; AYDIN, AHMET ALPER; Bobbo, Sergio; Fedele, Laura; Kimya Mühendisliği Bölümü; Aydın, Ahmet Alper

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  Thermal energy storage (TES) stands out as a key solution for advancing energy conservation and enhancing system efficiency, especially when paired with local renewable energy sources (RES). As the global shift toward sustainability accelerates, TES technologies hold the potential to play a central role in mitigating the challenges posed by increasing energy demands. However, despite its demonstrated efficacy and promise, TES has not yet achieved widespread adoption. This gap underscores the need for greater collaboration among experts, coupled with initiatives to raise public awareness and enhance education on the benefits and applications of TES. In this review, we take a comprehensive approach to explore the latest developments in TES systems, with a specific focus on their integration with renewable energy and HVAC R applications. In addition, this review includes a comparative analysis of TES technologies focusing on costs, environmental aspects and selection criteria. This work's main objective is to provide an in-depth analysis of TES technologies and to create a valuable resource for the renewable energy community. To this end, we have compiled a detailed and structured dataset that categorizes TES technologies by type and forms the foundation of a unique, user-friendly database. A key innovation of this review is the creation of a dynamic online platform that offers free and open access to this database. Built using "Looker Studio," the platform provides a seamless, interactive experience where users can easily search and filter information based on TES type, application, temperature range, efficiency, lifetime, and other relevant parameters. This continuously updated database addresses the long-standing need for a centralized, accessible repository of TES information, offering researchers, industry professionals, and stakeholders a powerful tool for informed decision-making. This novel platform distinguishes our review from previous studies by making the vast landscape of TES technologies not only more accessible but also adaptable to the specific needs of users. By offering this free, searchable resource to the renewable energy community, we aim to facilitate the adoption of TES technologies and support the global transition toward sustainable energy solutions.

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  Postearthquake damage mapping via remote sensing: Lessons from the 2023 türkiye disaster

  (Institute of electrical and electronics engineers (ieee), 2026-01-01) Gulsen Taskin; Nebiye Musaoğlu; Esra Erten; Ronny Hänsch; Lexie Yang; Harita Mühendisliği Bölümü; Harita Mühendisliği Bölümü; Musaoğlu, Nebiye; Erten, Esra

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  This review addresses the urgent need for scalable, accurate, and reproducible remote sensing solutions following the February 2023 Türkiye earthquakes. It synthesizes the contributions of five peer-reviewed studies published in the IEEE JSTARS Special Issue on post-earthquake damage and risk assessment. These studies cover areas such as damage classification with deep learning, fusion of multisource remote sensing data, creation of benchmark datasets, detailed damage mapping, and analysis of geophysical signals using outgoing longwave radiation. The article summarizes the methodological approaches and the practical relevance of the reviewed studies for detecting, evaluating, and quantifying damage, and outlines key challenges, including model generalization, class ambiguity, and data integration. It also discusses emerging trends, including explainable artificial intelligence, multimodal data fusion, and open-data platforms. This synthesis provides a foundation for building robust, interpretable, and real-time disaster response systems and aims to guide future research in earthquake-related Earth observation and rapid damage assessment.

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  Modeling atmospheric attenuation in vertical fso links: An altitude-aware piecewise framework

  (Institute of electrical and electronics engineers (ieee), 2026-01-01) Eylem Erdogan; Mohammed Elamassie; Ibrahim Altunbas; Gunes Karabulut Kurt; Murat Uysal; Halim Yanikomeroglu; Elektronik ve Hab.Müh.Bölümü; Altunbaş, İbrahim

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  A holistic link budget analysis for mmwave and thz communications in non-terrestrial networks

  (Institute of electrical and electronics engineers (ieee), 2026-01-01) Evla Safahan Ahrazoglu; Eylem Erdogan; Ibrahim Altunbas; Halim Yanikomeroglu; Elektronik ve Hab.Müh.Bölümü; Elektronik ve Hab.Müh.Bölümü; Ahrazoğlu, Evla Safahan; Altunbaş, İbrahim

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  The non-terrestrial network (NTN) architecture has gained significant interest from the academia owing to its versatility and the ability to provide worldwide service. To achieve extremely high data rates in NTNs, as intended in the sixth-generation (6G) communication systems, millimeter wave (mmWave) and terahertz (THz) frequencies can be considered, enabling substantial bandwidth and data transmission capacity, which makes them highly suitable for NTN applications. However, these high-frequency signals suffer from significant propagation challenges, including atmospheric attenuation, pointing errors, and various environmental effects. Therefore, a comprehensive link budget analysis is essential to accurately assess the feasibility of mmWave/THz-based NTN systems. Existing studies in the literature often fail to fully capture certain frequency-, altitude-, and direction-dependent effects observed in mmWave/THz transmission or possible communication scenarios within the NTN architecture. In particular, while most prior works primarily focus on free-space loss or atmospheric attenuation, this study adopts a much more comprehensive approach. In this work, a detailed link budget analysis is conducted for mmWave/THz NTNs, considering free-space loss, atmospheric absorption, weather-induced effects, ionospheric disturbances, polarization mismatches, feeder losses, antenna and circuitry constraints, fading, pointing errors, and non-white noise characteristics. The results have revealed that the multi-layer structure of the NTN architecture can help reducing the excessive loss levels to a certain level that can be tolerated by high-gain directional antennas/arrays, providing multi-gigabit links and making mmWave/THz NTNs feasible for 6G communication systems.

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