Results 41 to 50 of about 909,795 (277)
Eigenspace-Based Motion Compensation for ISAR Target Imaging
EURASIP Journal on Advances in Signal Processing, 2006 A novel motion compensation technique is presented for the purpose of forming focused ISAR images which exhibits the robustness of parametric methods but overcomes their convergence difficulties.
Yau D, Berry PE, Haywood B
doaj +1 more source
On the motion of a pendulum attached with tuned absorber near resonances
Results in Physics, 2018 In this paper, the motion of two degrees of freedom of a dynamical system consists of a simple pendulum attached with tuned absorber subject to harmonic excitation is investigated. The governing equations of motion are obtained using Lagrange’s equations
W.S. Amer, M.A. Bek, M.K. Abohamer
doaj +1 more source
Design Method for N-Lobed Noncircular Bevel Gears
Advances in Mechanical Engineering, 2020 As a type of spatial transmission mechanism, noncircular bevel gears (NBGs) can transfer power and motion between two intersecting axes with variable transmission following a suitable program of motion.
Kan Shi, Yan-An Yao, Shuai Lin
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On the influence of noise on chaos in nearly Hamiltonian systems
, 2003 The simultaneous influence of small damping and white noise on Hamiltonian systems with chaotic motion is studied on the model of periodically kicked rotor. In the region of parameters where damping alone turns the motion into regular, the level of noise
A.B. Rechester +18 more
core +1 more source
Region-Based Parametric Motion Segmentation Using Color Information
Graphical Models and Image Processing, 1998 This paper presents pixel-based and region-based parametric motion segmentation methods for robust motion segmentation with the goal of aligning motion boundaries with those of real objects in a scene. We first describe a two-step iterative procedure for
Y. Altunbasak, P. E. Eren, A. Tekalp
semanticscholar +1 more source
By dawn or dusk—how circadian timing rewrites bacterial infection outcomes
FEBS Letters, EarlyView.The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo +2 more
wiley +1 more source
Physical Review X, 2019 While quantum mechanics imposes a fundamental limit on the precision of interferometric measurements of mechanical motion due to measurement backaction, the nonlinear nature of the coupling also leads to parametric instabilities that place practical ...
Itay Shomroni +7 more
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, 2004 Dimensional regularization is used to derive the equations of motion of two point masses in harmonic coordinates. At the third post-Newtonian (3PN) approximation, it is found that the dimensionally regularized equations of motion contain a pole part ...
C.G. Bollini +49 more
core +2 more sources
Mobility of Discrete Solitons in Quadratically Nonlinear Media [PDF]
, 2006 We study the mobility of solitons in second-harmonic-generating lattices. Contrary to what is known for their cubic counterparts, discrete quadratic solitons are mobile not only in the one-dimensional (1D) setting, but also in two dimensions (2D).
B. A. Malomed +8 more
core +3 more sources
Molecular bases of circadian magnesium rhythms across eukaryotes
FEBS Letters, EarlyView.Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley +1 more source