نتایج جستجو برای: particle trajectory

تعداد نتایج: 219454  

2016
Lang Zhai Qi Hu

Recently, a problem that the infrared decoy interferes infrared detection system, cannot be solved. With the gradual application and popularity of the particle swarm optimization, it is preferable to apply it to dynamic multiobjective optimization to solve the problem of the recognition and the estimation of dynamic multi-object in infrared imaging. In this study, the dynamic multi-objective es...

Journal: :رادار 0
محمد نوری پرکستانی مرتضی کازرونی حمید حیدر

in this paper, the range doppler algorithm (rda) for synthetic aperture radar moving on a ballistic trajectory is presented. the 3-dimension acceleration and non-uniform trajectory cause decreases in efficiency of conventional imaging algorithms. in this paper, the analytical expression for the 2-d signal spectrum for ballistic trajectory using taylor series expansion and series reversion is de...

Determination of optimum location for drilling a new well not only requires engineering judgments but also consumes excessive computational time. Additionally, availability of many physical constraints such as the well length, trajectory, and completion type and the numerous affecting parameters including, well type, well numbers, well-control variables prompt that the optimization approaches b...

حسین پور, محبوب, محمدی, محمد‌علی, مهدی‌زاده, مهدیه,

Magnetic reconnection, which occurs in high conducting plasmas, changes the topology of magnetic field lines and converts magnetic energy into the kinetic and thermal energy of plasma and also accelerates charged particles. This phenomenon plays an important role in changing the dynamic of laboratory and space plasmas such as fusion tokamaks and sun’s corona. The electric and magnetic fields ge...

2016
Alexey K. Shaytan Grigoriy A. Armeev Alexander Goncearenco Victor B. Zhurkin David Landsman Anna R. Panchenko

We present here raw trajectories of molecular dynamics simulations for nucleosome with linker DNA strands as well as minimalistic nucleosome core particle model. The simulations were done in explicit solvent using CHARMM36 force field. We used this data in the research article Shaytan et al., 2016 [1]. The trajectory files are supplemented by TCL scripts providing advanced visualization capabil...

Journal: :Optics letters 2011
Chandroth P Jisha Alessandro Alberucci Ray-Kuang Lee Gaetano Assanto

We investigate the propagation of optical solitons interacting with linear defects in the medium. We show that solitons exhibit a wave-particle dualism versus power, i.e., depending on the relative size of soliton and defect, responsible for a soliton trajectory dependent on its waist.

Journal: :J. London Math. Society 2014
Tomasz Komorowski Tomasz Szarek

In this note we prove the law of the iterated logarithm for trajectories of particle carried by a two dimensional Eulerian velocity field. The field is given by a solution of a stochastic Navier–Stokes system with a non-degenerate noise. The proof relies on the martingale approximation of the trajectory process.

2007
Naresh Dadhich

We prove the theorem: The necessary and suucient condition for a spherically symmetric spacetime to represent an isothermal perfect uid (barotropic equation of state with density falling oo as inverse square of the curvature radius) distribution without boundary is that it is conformal to the \minimally" curved (gravitation only manifesting in tidal acceleration and being absent in particle tra...

Journal: :International Journal of Multiphase Flow 2022

Existing ice crystal icing codes commonly neglect non-spherical particle rotation behaviour. This leads to uncertainties in modelling as crystals are typically non-spherical. paper develops a two-dimensional framework model the trajectory and melting behaviour of rotating particles. Non-spherical translational rotational motions resolved using unit complex numbers. The effect on heat mass trans...

1999
S. Biswas A. Shaw B. Modak

This paper presents the derivation of Schwinger’s gauge invariant result of Im Leff upto one loop approximation, for particle production in an uniform electric field through the method of complex trajectory WKB approximation (CWKB). The CWKB proposed by one of the author’s [1] looks upon particle production as due to the motion of a particle in complex space-time plane, thereby requiring tunnel...

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