Results 61 to 70 of about 3,117 (297)

Scintillations in Southern Europe During the Geomagnetic Storm of June 2015

Remote Sensing
The sensitivity of Global Navigation Satellite System (GNSS) receivers to ionospheric disturbances and their constant growth are nowadays resulting in an increased concern of GNSS users about the impacts of ionospheric disturbances at mid-latitudes.
Anna Morozova, Luca Spogli, Teresa Barata, Rayan Imam, Emanuele Pica, Juan Andrés Cahuasquí, Mohammed Mainul Hoque, Norbert Jakowski, Daniela Estaço   +8 more
doaj   +1 more source

Night-time ionospheric scintillations at the magnetic equator

, 1979
The nocturnal and seasonal variations of equatorial ionospheric scintillations are presented. Scintillations are classified into two classes, namely, class I and class II depending on their fading rates and association with bottomside spread-F.
Krishna Murthy, B. V., Krishna Moorthy, K., Raghava Reddi, C.   +2 more
core   +1 more source

An AI‐Enabled All‐In‐One Visual, Proximity, and Tactile Perception Multimodal Sensor

Advanced Robotics Research, EarlyView.
Targeting integrated multimodal perception of robots, an AI‐enabled all‐in‐one multimodal sensor is proposed. This sensor is capable of perceiving three types of modalities, including vision, proximity, and tactility. By toggling an ultraviolet light and adjusting the camera focus, it switches smoothly between multiple perceptual modalities, enabling ...
Menghao Pu, Tiyong Zhao, Lingxi Zhang, Chaoqun Han, Zhiping Chai, Yifan Zhou, Han Ding, Zhigang Wu   +7 more
wiley   +1 more source

Signal statistics of equatorial nighttime ionospheric scintillations

, 1980
Cumulative probability distribution functions of equatorial nighttime ionospheric scintillations are studied and are found to agree well with the Nakagami m distribution. Relationship between percentage occurrence of scintillations and S 4 index has been
Krishna Murthy, B. V., Krishna Moorthy, K., Raghava Reddi, C.   +2 more
core   +2 more sources

Microscale Mapping of Fiber Strain and Damage in Composite Wrinkled Laminates Using Computed Tomography Assisted Wide‐Angle X‐Ray Scattering

Advanced Science, EarlyView.
This study combines full‐field tomography with diffraction mapping to quantify radial (ε002$\varepsilon _{002}$) and axial (ε100$\varepsilon _{100}$) lattice strain in wrinkled carbon‐fiber specimens for the first time. Radial microstrain gradients (−14.5 µεMPa$\varepsilon \mathrm{MPa}$−1) are found to signal damage‐prone zones ahead of failure, which ...
Hoang Minh Luong, James Trevarthen, Igor Dolbnya, Wadwan Singhapong, Nicholas Pilato, Richard Butler, Jiraphant Srisuriyachot, Alexander J. G. Lunt   +7 more
wiley   +1 more source

Role of the magnetospheric and ionospheric currents in the generation of the equatorial scintillations during geomagnetic storms [PDF]

Annales Geophysicae, 2004
The equatorial ionosphere parameters, Kp, Dst, AU and AL indices characterized contribution of different magnetospheric and ionospheric currents to the H-component of geomagnetic field are examined to test the geomagnetic activity effect on the ...
L. Z. Biktash
doaj   +1 more source

Structural and Compositional Effects on the Scintillation Properties of Fast Emitting Metal‐Organic Frameworks

Advanced Science, EarlyView.
The crystalline structure, the atomic numbers of the constituent elementsand the size of MOF crystals each influence their photoluminescence and scintillation properties in distinct ways. Together, these factors provide valuable guidelines for designing systems with optimized performance and tunable timing characteristics, arising from the synergistic ...
Francesca Cova, Jacopo Perego, Biplab Joarder, Nobuhiro Yanai, Anna Vedda, Silvia Bracco, Angiolina Comotti, Angelo Monguzzi, Irene Villa   +8 more
wiley   +1 more source

Machine learning approach for prediction of total electron content and classification of ionospheric scintillations over Visakhapatnam region

AIP Advances, 2023
Ionospheric scintillations, which are due to ionospheric plasma density anomalies, negatively impact trans-ionospheric signals and the positioning accuracy of the global navigation satellite system (GNSS).
Shiva Kumar Nimmakayala, Srilatha Indira Dutt V.B.S   +1 more
doaj   +1 more source

Daytime equatorial VHF radiowave scintillations and sporadic-e layer [PDF]

, 1989
121-124Daytime VHF radiowave scintillations at Trivandrum are compared with the E-region irregularities at Kodaikanal. It is shown that daytime scintillations at Trivandrum are basically of two categories.
Koparkar, P V, Sastri, J H, Rastogi, R G
core  

Compteur à scintillations pour particules atomiques

, 1948
On décrit une méthode de détection et de dénombrement de particules nucléaires basée sur le fait que ces particules provoquent, sur un écran fluorescent, des scintillations.
J. Debiesse, R. Champeix, Th. Kahan, H. Bizot   +3 more
core   +1 more source