Results 51 to 60 of about 3,517 (221)
A Deep Ensemble Transformer Model for Global Ionosphere Prediction and Uncertainty Quantification
Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 3, June 2026.Abstract Accurate global ionospheric forecasting is important for various purposes, from geophysical research to practical applications, including real‐time precise positioning and navigation. Existing studies primarily focus solely on deterministic predictions and often overlook uncertainty quantification.
Shuyin Mao, Junyang Gou, Benedikt Soja
wiley +1 more source
Mapping Ethiopian ionosphere using ground-based GPS TEC
Cogent Engineering, 2022 The objective of this paper is to map regional ionospheric Total Electron Content (vTEC) using Global Positioning System (GPS) data from 10 different GPS receiver sites in Ethiopia, to capture ionospheric phenomena (such as storm effect, Equatorial ...
Seydie Mebrie, Tsegaye Kassa
doaj +1 more source
Comparison Analysis Of Engine Performance Using I-Vtec System And Engine Without I-Vtec System Honda Cr-V [PDF]
, 2014 Vehicle manufactures develop technology which can increase of performance and the engine can have a great power and torque. One of this technology is using Intelligence Variable Timing and Lift Electronic Control (i-VTEC) that can be used to solve ...
, Ir. Sartono Putro, MT +2 more
core
Ionospheric Data Fusion With GNSS, GNSS‐RO and Satellite Altimetry Based on Machine Learning
Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 3, June 2026.Abstract Global Ionospheric Maps (GIMs) are essential in Global Navigation Satellite System (GNSS) applications, particularly for correcting ionospheric delays in single‐frequency positioning. GIMs are mainly derived from dual‐frequency GNSS observations, but the uneven distribution of ground stations—sparse over oceans—reduces accuracy in these ...
Marcel Iten, Shuyin Mao, Benedikt Soja
wiley +1 more source
A Refinement Method of Real-Time Ionospheric Model for China
Remote Sensing, 2020 Ionospheric delay is a crucial error source and determines the source of single-frequency precise point positioning (SF-PPP) accuracy. To meet the demands of real-time SF-PPP (RT-SF-PPP), several international global navigation satellite systems (GNSS ...
Yang Wang +3 more
doaj +1 more source
Атеротромбоз, 2023 Cancer is one of the most significant risk factors for venous thromboembolic complications (VTEC), which combines deep vein thrombosis and pulmonary embolism. Of the many well-known risk factors for VTEC, only cancer is associated with a 4-fold increased
Yu. A. Fedotkina, E. P. Panchenko
doaj +1 more source
Comparison Analysis Performance Of Honda Jazz Using Active VTec System And Non-Active VTec System Engine [PDF]
, 2012 The objective of this research is to know the influence variable valve timing of engine performance of Honda Jazz. Research uses four stroke engine with two types of engine use active vtec system and engine not active vtec system. Use dynamometer to know
Sanjaya, Dhanil
core
Space Weather, Volume 24, Issue 6, June 2026.Abstract This study presents a detailed case study of the ionospheric impacts of moderate (G2) and severe (G4) geomagnetic storms over the Latin American sector, with particular emphasis on the formation and suppression of equatorial plasma bubbles (EPBs).
C. S. Carmo +13 more
wiley +1 more source
Tecnología y Ciencia, 2019 Una especificación confiable del estado de la ionósfera dada por modelos empíricos es importante para mitigar los efectos que esta zona atmosférica produce sobre las operaciones de los sistemas de posicionamiento y navegación basadas en satélites.
Joaquín Marcelo Lopez +4 more
doaj +1 more source
Space Weather, Volume 24, Issue 6, June 2026.Abstract To address the complex spatiotemporal characteristics of ionospheric total electron content (TEC), a bidirectional convolutional long short‐term memory network with a dynamic cross‐attention mechanism for spatiotemporal feature weighting (CASF‐BiConvLSTM) is proposed and further combined with the sliding interquartile range (SIQR) method ...
Mengying Lin +5 more
wiley +1 more source