Başlık için listeleme
Toplam kayıt 2409, listelenen: 2334-2353
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Wave propagations in metamaterial based 2D phononic crystal: Finite element analysis
(Institute of Physics Publishing, 2018)In the present work, the acoustic band structure of a two-dimensional (2D) phononic crystal (PnC) containing composite material were investigated by the finite element method. Two-dimensional PC with triangular and honeycomb ... -
Wealthier is healthier? Healthier is wealthier? A comprehensive econometric analysis of the European countries
(Akademiai Kiado, 2021)Healthier people contribute more to the development of the economy. Besides, in a better economy, people have a better quality and healthier life. At this stage, one has to ask which one precedes the other: health or wealth? ... -
Wear Behavior of Borided AISI D2 Steel under Linear Reciprocating Sliding Conditions
(Pleiades Publishing, 2019)AISI D2 steel is the most commonly used cold-work tool steel in its grade. In this study, microstructural characterization and some mechanical properties of borided AISI D2 steel samples were investigated. The boriding ... -
Webcam Based Real-Time Robust Optical Mark Recognition
(Springer, 2015)This study proposes a robust, low cost, real-time optical mark recognition (OMR) system that uses a webcam and a small OMR form to read hand-marked data from plain paper. The system is designed to read data from any ... -
WEDM machining of MoNbTaTiZr refractory high entropy alloy
(Elsevier, 2022)Refractory high entropy alloys (RHEAs) have shown great promise for a multitude of advanced engineering applications due to their high mechanical stability from cryogenic temperatures to 1600 °C. However, the low ductility ... -
Wet non-thermal integration of nano binary silicon-gold system with strong plasmonic and luminescent characteristics
(Amer Inst Physics, 2019)We report on a wet none thermal integration of the binary silicon-gold nano system. Instead of thermally based gas-solid procedures, we use charge exchange/injection-based procedures in a chemical wet environment. SEM and ... -
Wheat Yield Estimation from NDVI and Regional Climate Models in Latvia
(MDPI, 2020)Wheat yield variability will increase in the future due to the projected increase in extreme weather events and long-term climate change effects. Currently, regional agricultural statistics are used to monitor wheat yield. ... -
Which power cycle is the best fit for parabolic trough solar collectors? A comparative and comprehensive case study for six sub-configurations of the three main cycles
(Elsevier, 2023)In this study, the integration of a Parabolic Trough Collector with different power cycles was investigated on an annual basis in terms of Energy, Exergy, Economics and Environmental under different meteorological conditions. ... -
Why Kalina (Ammonia-Water) cycle rather than steam Rankine cycle and pure ammonia cycle: A comparative and comprehensive case study for a cogeneration system
(Elsevier, 2022)There are many studies on the Kalina cycle and steam Rankine cycles. However, there are not enough comparative and descriptive studies on why the Kalina cycle or steam Rankine cycle should be selected. In addition to that, ... -
Wide band fractal-based perfect energy absorber and power harvester
(Wiley, 2019)In this article, a novel wide band polarization and incident angle independent metamaterial absorber (MA) and energy harvesting applications which operates at C (4GHz-8 GHz) and X (8GHz-12 GHz) is proposed. The unit-cell ... -
A Wideband Highly Efficient Omnidirectional Compact Antenna for WiMAX/Lower 5G Communications
(Wiley, 2023)Microstrip patch antenna (MPA) is widely used for different wireless communications such as WiMAX and fifth generation (5G). In this paper, a wideband, highly efficient, omnidirectional, compact novel patch antenna has ... -
Wideband luminescence from bandgap-matched Mg-based Si core-shell geometry nanocomposite
(American Institute of Physics Inc., 2018)We use wet treatment to integrate red-luminescent Si nanoparticles with Mg-based wide-bandgap insulators Mg(OH) and MgO (5.7 and 7.3 eV respectively). In the process, Mg2+ is reduced on Si nanoparticle clusters, while ... -
Wideband metamaterial absorber based on CRRs with lumped elements for microwave energy harvesting
(Taylor & Francis, 2018)A novel metamaterial absorber structure is designed and characterized for microwave energy harvesting. The suggested structure is composed of two circular ring resonators with different dimensions. Due to harvesting ... -
Wideband Microwave Absorber Comprising Metallic Split-Ring Resonators Surrounded With E-Shaped Fractal Metamaterial
(Institute of Electrical and Electronics Engineers Inc., 2021)A specially designed metallic E-shaped fractal-based perfect metamaterial absorber (PMA) with fairly wideband absorptivity in the K- and Ka-bands of the microwave regime was investigated. The PMA top surface is comprised ... -
Wire electric discharge machining and its effect on the surface finish of HfNbTaTiZr refractory high-entropy alloy
(Springer, 2023)Refractory high-entropy alloys (RHEAs) have high strength and hardness but limited plasticity at room temperature, making them challenging to process and shape using conventional techniques. In the current study, HfNbTaTiZr ... -
WLAN Uygulamaları için Düşük Gürültülü Kuvvetlendirici Tasarımı
(Avrupa Bilim ve Teknoloji Dergisi, 2021)Kablosuz haberleşme sistemlerinin gelişmesiyle birlikte bu alanda kullanılacak sistemlerin alt birleşenlerine olan talep giderek artmaktadır. Alıcı sistemlerde düşük gürültülü kuvvetlendirici (LNA) anahtar rol oynamaktadırlar. ... -
WRF ve yapay zeka ile rüzgar enerjisi santrali optimizasyonu
(İskenderun Teknik Üniversitesi / Lisansüstü Eğitim Enstitüsü / Enerji Sistemleri Mühendisliği Ana Bilim Dalı, 2023)Dünya genelinde yenilebilir enerjiye olan yönelim, fosil yakıtların kullanımına bağlı olarak sera gazları yayılımı sonucu artan yüzey sıcaklığı, buzulların erimesi ile dünya ve ekosistemdeki canlılar için daha da önem ... -
Yağ filtresi kovan tasarımlarının sonlu elemanlar yöntemi ile karşılaştırılması
(İskenderun Teknik Üniversitesi / Mühendislik ve Fen Bilimleri Enstitüsü / Makine Mühendisliği Anabilim Dalı, 2019)Yağ filtreleri, motor ömrü açısından önemli parçalardır. Özellikle yüksek güç ve hız uygulamalarında motorun verimli çalışabilmesi için sistemde bulunan yağın gerekli miktar ve hızda dolaşması gerekmektedir. Motor, gereği ... -
Yağış – akış ilişkisinin yapay sinir ağları ve otoregresif hareketli ortalamalar modelleri ile tahmini
(İskenderun Teknik Üniversitesi / Mühendislik ve Fen Bilimleri Enstitüsü / İnşaat Mühendisliği Anabilim Dalı, 2020)Su kaynaklarının daha verimli kullanılması, havza yönetimi ve afetlerin engellenmesi amacıyla yapılan su yapıları planlamasında, akış verilerinin tahmini büyük bir önem taşımaktadır. Planlama aşamasında kullanılacak verilerin ... -
Yağış-akış ilişkisinin yapay zekâ teknikleri kullanılarak tahmini
(İskenderun Teknik Üniversitesi / Mühendislik ve Fen Bilimleri Enstitüsü / İnşaat Mühendisliği Anabilim Dalı, 2020)Su kaynaklarının kullanımı, korunması ve ekonomik ömrünün belirlenmesi amacıyla; yağış-akış verilerinin analiz edilmesi, yapılan analizler neticesinde elde edilen verilerden tahminler yapılması önemlidir. Bu sebeple ...
