نتایج جستجو برای: reference orbit
تعداد نتایج: 311189 فیلتر نتایج به سال:
This paper deals with the registration of near real-time satellite SAR images by an automatic image-to-image matching approach. The approach is dedicated to crisis mapping applications where the task is to register near real-time (NRT) SAR images within some hours against a reference image. Our registration strategy exists of the following steps: Feature extraction and matching between a NRT im...
purpose : granular cell tumors (gct) are benign unusual neoplasms which have been proven to have a schwann cell phenotype. they rarely occur in the eye region. case reports : we report three cases of gct in the ocular adnexa including palpebra, subconjuctiva and orbit which rarely occur. patients are, a young girl with the lesion in orbit and presentation of proptosis, a middle aged man with th...
A remote synchronization system for the on-board crystal oscillator (RESSOX) of the QZSS is proposed. Aimed at offering an alternative architecture for the classic GPS time-keeping system (TKS), the proposed system consists of a synchronization framework where an ultrastable atomic clock, localized at the ground station, is kept synchronized to a second time reference, a voltage-controlled crys...
The optimization of a solar sail-based orbital transfer amounts to searching for the control law that minimizes flight time. In this context, optimal trajectory is usually determined assuming constant properties. However, total irradiance undergoes both long-term (solar cycles) and short-term variations, recent analyses have shown may an impact on sailing missions requiring accurate thrust modu...
The purpose of this paper is the semi-analytical computation of the bounded orbits of Hill's equations, describing the relative motion of two particles in their Keplerian motion around a central body. We have considered the case in which one of the particles moves along a circular reference orbit. The solutions obtained are the generalisation of the usual periodic orbits obtained for the linear...
In this paper, the monodromy variant of Newton’s method is applied to locate periodic or quasi-periodic relative satellite motion. Advantages of using Newton’s method to search for periodic or quasi-periodic relative satellite motion include simplicity of implementation, ability to deal with nonlinear dynamics, repeatability of the solutions due to its non-random nature, and fast convergence. A...
We compare coupled-cluster (CC) and configuration-interaction (CI) results for (56)Ni obtained in the pf-shell basis, focusing on practical CC approximations that can be applied to systems with dozens or hundreds of correlated fermions. The weight of the reference state and the strength of correlation effects are controlled by the gap between the f(7/2) orbit and the f(5/2), p(3/2), p(1/2) orbi...
' Duke-Elder' is now the standard reference book on Ophthalmology and has really made many smaller works and even monographs almost redundant. Volume V is of course of the same supreme standard as the former four volumes. Each subject is dealt with exhaustively, the literature is fully reviewed and the writing is in elegant English. The present volume deals with the Ocular Adnexa. Diseases of t...
Calculations for 125Te magnetic shielding constants and chemical shifts were carried out using a quasirelativistic Hamiltonian including the spin-free relativistic, oneand two-electron spin–orbit, and relativistic magnetic interaction terms. For the tellurium-containing series Te(CH3)2, TeH2, TeF6, Te(CH3)4, and Te(CH3)2Cl2, the relativistic effects amounted to as much as 1300 ppm and were very...
FAIR BOOSTER OPERATION U Beam Intensity In the frame of machine experiments, the maximum accelerated number of U-ions (FAIR reference ion) could be increased to 7x10 ions per cycle. In parallel, the relative amount of beam loss during the cycle has been reduced to about 30% of the injected ions (figure 1). Essentially, this progress has been enabled by a careful machine setting with an optimize...
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