Results 191 to 200 of about 10,632,797 (342)

Global Ionospheric Slab Thickness Prediction Model Using XGBoost and Ensemble Learning

Space Weather, Volume 24, Issue 1, January 2026.
Abstract The ionospheric equivalent slab thickness is a key parameter for understanding the plasma distribution in the ionosphere, with direct relevance to satellite navigation, communication, and skywave over‐the‐horizon radar. However, traditional prediction methods often suffer from regional biases, limiting their global applicability.
C. Han, X. R. Chong, M. Ou, D. D. Wang, J. Feng, G. Chen, X. L. Min, D. W. Wang, Z. X. Gao   +8 more
wiley   +1 more source

Unveiling solitary and twinning kink solitons in (2+1)-dimensional modified Zakharov-Kuznetsov equation arising in electronics. [PDF]

Sci Rep
Al-Sawalha MM, Noor S, Shah R, Yasmin H.
europepmc   +1 more source

Multiple-angle formulas of generalized trigonometric functions with two parameters [PDF]

, 2016
S. Takeuchi
semanticscholar   +1 more source

Magnetic Field Analysis of Multi‐Segment Modulated Pole Motors Based on the Air Gap Domain Multi‐Harmonic Method

IET Electric Power Applications, Volume 20, Issue 1, January/December 2026.
A subdomain analytical model for multi‐harmonic air‐gap subdomains is proposed to predict motor magnetic fields containing complex harmonic components. Theoretical analysis demonstrates that this model effectively reduces the matrix dimension during analytical computation, resulting in lower computational time costs for the same harmonic order while ...
Kun Wang, Yong Han
wiley   +1 more source

The wrapping Epanechnikov exponential distribution: A novel flexible model for asymmetric circular data. [PDF]

PLoS One
Alotaibi SAS, Muda N, Al-Khazaleh AMH, Alkhazaleh S.   +3 more
europepmc   +1 more source

Trigonometric Determinants via special values of Dirichlet $L$-Functions [PDF]

Liwen Gao, Xuejun Guo
openalex  

Calculation Method for Magnetic Saturation Current of Shunt Reactors Under Oscillation in Renewable Energy Power Systems

IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
The paper proposes a piecewise analytical method for calculating the winding current and the neutral reactor current under oscillatory conditions in renewable energy power systems. The method is based on the operational state of the core magnetic circuit, where the nonlinear magnetisation curve is approximated by piecewise linear segments with the ...
Botong Li, Guodong Li, Wei Dai, Baoshi Zhang, Bin Li, Yincheng Wang, Xiang Zhu, Xinrui Chang, Shijie Han   +8 more
wiley   +1 more source

A Unified Bi‐Objective Programming Framework for Active Power Optimization and Reactive Power Coordination of Electric Vehicles Integrated With Distribution Feeder Reconfiguration

IET Renewable Power Generation, Volume 20, Issue 1, January/December 2026.
Evaluation of the role of EVs as auxiliary sources in providing reactive power to the system; Development of an approach for dual‐objective programming of the combined problem of EVs and DSR reactive power coordination in the presence of DGs; A new mathematical formulation approach without the presence of trigonometric functions and without considering
Azadeh Barani, Majid Moazzami, Ghazanfar Shahgholian, Fariborz Haghighatdar‐Fesharaki   +3 more
wiley   +1 more source

Measurement of Postoperative Apical Vertebral Rotation Using Radiographic Images in Adolescent Idiopathic Scoliosis-Quantitative Evaluation Using Inverse Trigonometric Functions.

Spine Surg Relat Res
Okuwaki S, Kotani T, Ohyama S, Iwata S, Sakuma T, Iijima Y, Akazawa T, Inage K, Shiga Y, Minami S, Ohtori S, Yamazaki M.   +11 more
europepmc   +1 more source

A novel laminated power-law model for bending analysis of functionally graded plates with arbitrary material gradients. [PDF]

Sci Rep
Chen S, Wu J, Zhao H.
europepmc   +1 more source