Results 21 to 30 of about 428,797 (300)

Evaluation of Hands-Free VR Interaction Methods During a Fitts’ Task: Efficiency and Effectiveness

IEEE Access, 2023
Currently, it is standard to use tracked handheld controllers for interaction in immersive virtual reality (VR). However, since VR interactions are becoming more natural with hand tracking, it is important to provide hands-free alternatives for selection
Pedro Monteiro, Guilherme Goncalves, Bruno Peixoto, Miguel Melo, Maximino Bessa   +4 more
doaj   +1 more source

Ionospheric effects of the solar flares of September 23, 1998 and July 29, 1999 as deduced from global GPS network data [PDF]

, 2000
This paper presents data from first GPS measurements of global response of the ionosphere to solar flares of September 23, 1998 and July 29, 1999. The analysis used novel technology of a global detection of ionospheric effects from solar flares (GLOBDET)
A.T. Altyntsev, Afraimovich, Afraimovich, Afraimovich, Afraimovich, Afraimovich, Calais, Calais, Calais, Davies, Donnelly, Donnelly, Donnelly, E.A. Kosogorov, E.L. Afraimovich, Fitzgerald, Hofmann-Wellenhof, Kelley, Klobuchar, L.A. Leonovich, Livingston, Mannucci, Mendillo, Mendillo, N.S. Larina, Saito, Thome, Vanderveen   +27 more
core   +2 more sources

Ionospheric response to AGW propagation detected using GNSS measurements and coherent sounding over “Vernadsky” and “Palmer” Antarctic stations

Український антарктичний журнал, 2017
The work presents results of the diagnostics of travelling ionospheric disturbances (TIDs) over the Antarctic Peninsula obtained by using two different techniques. The first method is based on ground-based multi- positional GNSS TEC measurements, and the
A. A. Sopin, Yu. M. Yampolski, V. V. Paznukhov, S. B. Kascheev, A. V. Koloskov, I. I. Pikulik, A. V. Zalizovski, A. S. Kashcheyev   +7 more
doaj   +1 more source

2018年8月5日印度尼西亚地震震前电离层异常特征

Dizhen xuebao, 2020
基于2018年8月5日印度尼西亚地震震中（116.45°E，8.33°S）附近的澳大利亚达尔文站和位于震中磁力线共轭区域的武汉站的电离层测高仪观测数据，以及相同区域全球卫星导航系统接收机的观测数据，对该地震震前的电离层异常扰动特征进行了分析。结果显示，震前同时观测到了电离层F2层临界频率（foF2）和总电子含量（TEC）时间序列的异常。基于岩石圈-大气层-电离层直流电场耦合模式和美国国家大气研究中心的热层-电离层环流耦合模式（NCAR/HAO TIEGCM ...
Zhuangkai Wang, Yi Liu, Jing Liu, Xuemin Zhang, Chen Zhou   +4 more
doaj   +1 more source

Numerical and experimental analysis of thermal penetration depth in bare reinforced concrete structures during fire accidents [PDF]

E3S Web of Conferences, 2020
This work faces the problem of fire resistance and temperature penetration depth in reinforced concrete under construction subjected to fire. Indeed, the design approaches always neglect the fire-induced effects on the structures under construction.
Tagliafico Luca Antonio, Cavalletti Paolo, Cavalletti Alessandro, Marafioti Chiara, Poma Francesco, Sterpi Enrico   +5 more
doaj   +1 more source

Dress Tec

, 2022
Los grandes volúmenes de residuos textiles y contaminación producidos por la industria de la moda y en especial por el fast fashion, la necesidad cada vez más inminente de exclusividad y privilegio de los consumidores, y el avance exponencial de la implementación de tecnología en productos cotidianos nos llevan a plantear Dress Tec, a un clic de tu ...
Romero Sierra, María Camila, Rodriguez Nuñez, María Camila, Giraldo Muñoz, Daniela, Ballesteros Roa, Laura María   +3 more
openaire   +1 more source

Assessment of the Performance of Ionospheric Models with NavIC Observations during Geomagnetic Storms

, 2020
The paper presents an assessment of the performances of the global empirical models: International Reference Ionosphere (IRI)-2016 and the NeQuick2 model derived ionospheric Total Electron Content (TEC) with respect to the Navigation with Indian ...
balan, hochegger, jakowski, mruthyunjaya, radicella   +4 more
core   +1 more source

Privacy-Preserving Machine Learning on Apache Spark

IEEE Access, 2023
The adoption of third-party machine learning (ML) cloud services is highly dependent on the security guarantees and the performance penalty they incur on workloads for model training and inference.
Claudia V. Brito, Pedro G. Ferreira, Bernardo L. Portela, Rui C. Oliveira, Joao T. Paulo   +4 more
doaj   +1 more source

Online, automatic, near‐real time estimation of GPS‐TEC: IONOLAB‐TEC [PDF]

Space Weather, 2013
The variability of space weather can best be captured using total electron content (TEC), which corresponds to total number of electrons on a ray path. The dual‐frequency ground based GPS receivers provide a cost‐effective means for monitoring TEC. Computation of TEC for a single GPS station is a challenge due to various unknowns and ambiguities such ...
Sezen, U., Arikan F., Arikan, O., Ugurlu O., Sadeghimorad, A.   +4 more
openaire   +4 more sources

The GPS global detection of the ionospheric response to solar flares [PDF]

, 2000
This author suggests the concept of a new technology for global detection (GLOBDET) of atmospheric disturbances of natural and technogenic origin, on the basis of phase measurements of the total electron content (TEC) in the ionosphere using an ...
Afraimovich, E. L.
core   +3 more sources