Results 1 to 10 of about 25,983,590 (298)

Numerical Algorithm for Dynamic Impedance of Bridge Pile-Group Foundation and Its Validation

Algorithms, 2021
The characteristics of bridge pile-group foundation have a significant influence on the dynamic performance of the superstructure. Most of the existing analysis methods for the pile-group foundation impedance take the trait of strong specialty, which ...
Chenyu Wang, Hong Qiao, Yi Wang, Xianting Du   +3 more
doaj   +1 more source

Determination of Harmonic Parameters with Temporal Variations: An Enhanced Harmonic Analysis Algorithm and Application to Internal Tidal Currents in the South China Sea

Journal of Atmospheric and Oceanic Technology, 2018
As an effective tool to distinguish different tidal components, classical tidal current harmonic analysis has been widely used to obtain harmonic parameters of internal tidal currents.
G. Jin, Haidong Pan, Qilin Zhang, Xianqing Lv, Wei Zhao, Yuan Gao   +5 more
semanticscholar   +1 more source

Enerji Kalitesi Açısından Harmonikli Bir Sağlık Tesisinin İncelenmesi

Düzce Üniversitesi Bilim ve Teknoloji Dergisi, 2019
Elektrik güç sistemlerinde ve tesislerinde enerjinin kalitesini belirlemede temel unsurlardan birideharmoniklerdir. Olumsuz etkilere neden olan bu harmoniklerin etkilerin yok edilmesi gerekmektedir.
Özkan Alkan, Salih Tosun, Özge Alkan
doaj   +1 more source

Quantifying the Response of German Forests to Drought Events via Satellite Imagery

Remote Sensing, 2021
Forest systems provide crucial ecosystem functions to our environment, such as balancing carbon stocks and influencing the local, regional and global climate.
Marius Philipp, Martin Wegmann, Carina Kübert-Flock   +2 more
doaj   +1 more source

Assessment of Ocean Circulation Characteristics off the West Coast of Ireland Using HF Radar

Remote Sensing, 2023
Research on coastal ocean circulation patterns over long time periods is significant for various marine endeavors: environmental protection, coastal engineering construction, and marine renewable energy extraction.
Lei Ren, Guangwei Pan, Lingna Yang, Yaqi Wang, Gang Zheng, Peng Yao, Qin Zhu, Zhenchang Zhu, Michael Hartnett   +8 more
doaj   +1 more source

A Cogging Torque Minimization Procedure for Interior Permanent Magnet Synchronous Motors Based on a Progressive Modification of the Rotor Lamination Geometry

Energies, 2022
This article describes a simple cogging torque minimization procedure for interior permanent magnet synchronous machines (IPMSMs), consisting of a progressive modification of the rotor lamination geometry.
Massimo Caruso, Antonino Oscar Di Tommaso, Rosario Miceli, Fabio Viola   +3 more
doaj   +1 more source

Vibration analysis of piping connected with shipboard equipment

Frontiers in Mechanical Engineering
The piping system connected with the shipboard equipment may be subjected to excessive vibration due to harmonic base excitation produced by hydrodynamic force imposed on the propeller blades interacting with the hull and by other sources.
Radharaman Tripathi, Tushar A. Jadhav, Mahesh K. Gaikwad, Mithul J. Naidu, Aishwarya B. Gawand, Duran Kaya, Sachin Salunkhe, Sachin Salunkhe, Robert Cep, Emad Abouel Nasr   +9 more
doaj   +1 more source

Multiple harmonic sources identification including inverter‐based distributed generations using empirical Fourier decomposition

IET Generation, Transmission & Distribution, 2023
This paper proposes an intelligent approach based on the empirical Fourier decomposition (EFD) to identify harmonic sources at the point of common coupling (PCC) when different inverter‐based distributed generations (DGs) like microturbine (MT), battery ...
Shayan Z. T. Motlagh, Asghar Akbari Foroud   +1 more
doaj   +1 more source

Impact of Multitemporal Land Use and Land Cover Change on Land Surface Temperature Due to Urbanization in Hefei City, China

ISPRS International Journal of Geo-Information, 2021
Land surface temperature (LST) is an essential parameter in the climate system whose dynamics indicate climate change. This study aimed to assess the impact of multitemporal land use and land cover (LULC) change on LST due to urbanization in Hefei City ...
Jing Sun, Suwit Ongsomwang
doaj   +1 more source

Influence of the Supply Voltage Variation on the Conducted Emission in the Frequency Range up to 150 kHz Injected into the Power Grid by CFL and LED Lamps—Case Study

Applied Sciences
In normal operating conditions, the mains voltage level provided by low-voltage distribution networks follows time-varying patterns within permissible limits.
Wojciech Frydlewicz, Łukasz Michalec, Paweł Kostyła, Dominika Kaczorowska, Tomasz Sikorski   +4 more
doaj   +1 more source