Results 61 to 70 of about 246 (135)
Coherence and quasistable states in a strong infrared field
Physical Review A, 2016 We study the quasistability of UV-pulse-train-excited H atoms in a strong infrared (IR) laser as a function of the phase delay of the UV pulse train relative to the IR laser. The UV pulse train contains two frequency components. When the two components have frequencies separated by two IR photons, the population of surviving electrons is modulated by ...
Changchun Zhong, F. Robicheaux
openaire +2 more sources
Geoarchaeology, Volume 39, Issue 2, Page 143-167, March/April 2024.Abstract In geoarchaeological studies, there is an issue with distinguishing between natural and anthropogenic signals in pedological paleoarchives. With the pedostratigraphy of the Upper Paleolithic site of Kostenki 14, this issue is reflected by problems with the determination of features of pedogenic and pyrogenic processes. This issue was addressed
Anastasiia Kurgaeva +6 more
wiley +1 more source
On stability and quasi-stability of a vector lexicographic quadratic boolean programming problem
Journal of Numerical Analysis and Approximation Theory, 2001 We consider a vector Boolean programming problem with the linear-quadratic partial criteria. Formulas of radiuses of two types of stability, necessary and sucient conditions of stability are found.
V.A. Emelichev, V. Nikulin
doaj +2 more sources
Influence of Cobalt Doping on the Photogenerated Holes in ZnO Nanoparticles
physica status solidi (RRL) – Rapid Research Letters, Volume 18, Issue 3, March 2024.Doping ZnO nanoparticles with cobalt ions results in the killing of the core‐defect signal (right panel), which in turn inhibits the light‐induced hole releasing implied in methyl radical generation (left panel). The efficient cobalt doping of zinc oxide nanoparticles grown by chemical method, with Co2+ substituting the Zn2+ cations, is proved by ...
Zahraa Jradi +6 more
wiley +1 more source
Singular limit and long-time dynamics of Bresse systems
, 2017 The Bresse system is a valid model for arched beams which reduces to the classical Timoshenko system when the arch curvature $\ell=0$. Our first result shows the Timoshenko system as a singular limit of the Bresse system as $\ell \to 0$.
Ma, To Fu, Monteiro, Rodrigo Nunes
core +1 more source
Advanced Intelligent Systems, Volume 6, Issue 1, January 2024.A deep imitation learning structure is proposed for optimal trajectory planning of an unstable dynamic system. Given the system's initial conditions, the neural networks (NNs) imitate the iterative linear quadratic regulator to generate near‐optimal trajectories. Leveraging on NN gradients, optimizing the system's initial conditions, avoiding obstacles,
Bo-Hsun Chen, Pei-Chun Lin
wiley +1 more source
On quasi-stability of the vector Boolean problem of minimizing absolute deviations of linear functions from zero [PDF]
Computer Science Journal of Moldova, 2006 We consider a multi-criterion Boolean programming problem with partial criteria of the kind MIN MODUL of linear functions. We investigate such type of stability which can be understood as a discrete analogue of the Hausdorff lower semi-continuity.
Vladimir A. Emelichev +1 more
doaj
Journal of Numerical Analysis and Approximation Theory, 1998 Not available.
Vladimir Emelichev, Dmitriy Podkopaev
doaj +2 more sources
Jakobshavn Isbræ, West Greenland: the 2002–2003 collapse and nomination for the UNESCO World Heritage List [PDF]
, 2004 Jakobshavn Isbræ (also known as Sermeq Kujalleq or Ilulissat Isbræ) is situated at about 69°10′N and 50°00′W in West Greenland. This major outlet from the Inland Ice has an extremely high rate of movement (nearly 1 m/hour) and thus a high production of ...
Mayer, Christoph +3 more
core +2 more sources
A constant-utility criterion linked to an imperfect economy affected by irreversible global warming [PDF]
, 2009 The question of formulation of a social planner criterion for an imperfect economy is examined using an example of a polluting economy negatively affected by growing temperature.
Bazhanov, Andrei V.
core