Results 31 to 40 of about 2,315 (173)

Enhancing Low‐Latitude Ionospheric Irregularity Prediction With Generalized Linear Models

Space Weather, Volume 24, Issue 3, March 2026.
Abstract The ionosphere poses challenges for accurate forecasting due to its complexity and variability. Irregularities in the lower ionosphere are influenced by local time, season, geographic location, solar activity and space weather, complicating precise predictions.
Alysson Brhian, Marco A. Ridenti, Francisco Azpilicueta, Mauricio Gende, Marisa Roberto   +4 more
wiley   +1 more source

Noise in Genotype Selection Model

, 2003
We study the steady state properties of a genotype selection model in presence of correlated Gaussian white noise. The effect of the noise on the genotype selection model is discussed.
Ai, Bao-Quan, Chen, Wei, Liu, Guo-Tao, Liu, Liang-Gang, Wang, Xian-Ju, Wen, De-Hua   +5 more
core   +1 more source

The Evolution of a Polar Cap Patch Into a Blob in the Nightside Ionosphere: Direct Observations of Multiple Blob Formation Mechanisms Acting Simultaneously on the Same Plasma

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract A polar cap patch was observed to exit the polar cap to become a blob as it entered the auroral oval on the nightside of the Earth under moderately quiet geomagnetic conditions (Kp = 3−). Auroral particle precipitation led to an increase in the electron density of the blob.
S. J. Maguire, A. G. Wood, D. R. Themens, E. M. Henley, S. E. Milan, Y. Soobiah, K. Oksavik, W. J. Miloch, J. C. Coxon, M. G. Johnsen   +9 more
wiley   +1 more source

Structure and Mechanical Properties of Iron after Surface Severe Plastic Deformation under Friction with Simultaneous Nitrogen Saturation: I. Structure Formation [PDF]

, 2011
The structure of armco iron after severe plastic deformation under friction with simultaneous nitrogen saturation has been studied by microstructure analysis, X ray diffraction, and transmission and scanning electron microscopy. A gradient surface layer,
Byakova, Alexandra Victorovna, Milman, Yulyi Victorovich, Yurkova, Alexandra Ivanovna   +2 more
core   +1 more source

An octupole two-phonon multiplet in 96Zr and its description within the spdf interacting boson model

Physics Letters B, 1989
Abstract Members of a two-phonon octupole vibrational multiplet in 96Zr and their mixing with other positive parity levels are discussed. Calculations within the spdf boson version of the interacting boson model which includes intruder configuration mixing are compared with the experimentally observed properties.
D.F. Kusnezov, E.A. Henry, R.A. Meyer
openaire   +1 more source

Energy Partition at a Collisionless Supercritical Quasi‐Parallel Shock

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract Shocks in collisionless astrophysical plasmas redistribute some of the incident flow energy into both thermal and non‐thermal energy. Quantifying the partition of that energy amongst various particle species or their sub‐populations, and electromagnetic energy, represents a fundamental goal of shock physics.
Steven J. Schwartz, Karlheinz J. Trattner, Savvas Raptis, Robert E. Ergun, Lynn B. Wilson III, Roman G. Gomez, Ian J. Cohen, Daniel J. Gershman, Katherine A. Goodrich, Harald Kucharek, Tien Vo   +10 more
wiley   +1 more source

Stochastic bifurcation phenomenon and multistable behaviors in a fractional Rayleigh–Duffing oscillator under recycling noise

Frontiers in Physics
This study examines the stochastic bifurcation phenomenon in a fractional and multistable Rayleigh–Duffing oscillator subjected to recycling noise excitation.
Ya-Jie Li, Zhi-Qiang Wu, Zhi-Qiang Wu, Yong-Tao Sun, Yong-Tao Sun, Xiang-Yun Zhang, Sheng-Li Chen   +6 more
doaj   +1 more source

Possible experimental signature of octupole correlations in the 0$^+_2$ states of the actinides

, 2013
$J^{\pi}$= 0$^+$ states have been investigated in the actinide nucleus ${}^{240}$Pu up to an excitation energy of 3 MeV with a high-resolution (p,t) experiment at $E_{p}$= 24 MeV. To test the recently proposed $J^{\pi}$= 0$^+_2$ double-octupole structure,
Bucurescu, D., Endres, J., Faestermann, T., Hertenberger, R., Pascu, S., Skalacki, S., Spieker, M., Weber, S., Wirth, H. -F., Zamfir, N. -V., Zilges, A.   +10 more
core   +1 more source

Evaluating the OMNI Database: Statistical Analysis of Time‐Shifted L1 Data Versus Direct Near‐Earth Solar Wind Observations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract This study presents a comprehensive statistical comparison of solar wind measurements between the OMNI database which contains data collected at L1 that is shifted to the bow shock nose, and near‐Earth observations from MMS, Cluster, and THEMIS missions near the bow shock nose.
G. H. Blüthner, M. Volwerk, D. Schmid, R. Nakamura, M. Temmer, O. W. Roberts, F. Koller, A. Varsani   +7 more
wiley   +1 more source

0+ states and collective bands in deformed actinide nuclei [PDF]

Ядерна фізика та енергетика, 2007
By means of the (p, t) reaction we studied the excitation spectra of 0+ states in the deformed nuclei 228Th, 230Th, and 232U, using the Q3D magnetic spectrograph facility at the Munich tandem accelerator.
A. I. Levon, G. Graw, S. Christen, Y. Eisermann, C. Günther, R. Hertenberger, J. Jolie, O. Möller, P.Thirolf, D. Tonev, H.-F. Wirth, N. V. Zamfir   +11 more
doaj