نتایج جستجو برای: kinematically admissible velocity field

تعداد نتایج: 914173  

Journal: :IEEE Trans. Robotics and Automation 1996
Randy C. Brost Kenneth Y. Goldberg

AbstructCommercially available modular fixturing systems typically include a lattice of holes with precise spacing and an assortment of precision locating and clamping modules that can be rigidly attached to the lattice. Currently, machinists manually design a suitable arrangement of these modules to hold a given part. This requires expertise and can delay production. Futhermore, a machinist ma...

Journal: :computational methods for differential equations 0
mitra vizheh department of mathematics, shahed university syaed hodjatollah momeni-masuleh department of mathematics, shahed university alaeddin malek department of applied mathematics, faculty of mathematical sciences, tarbiat modares university

in this paper, optimal distributed control of the time-dependent navier-stokes equations is considered. the control problem involves the minimization of a measure of the distance between the velocity field and a given target velocity field. a mixed numerical method involving a quasi-newton algorithm, a novel calculation of the gradients and an inhomogeneous navier-stokes solver, to find the opt...

2007
J. D. P. Kenney

We report on the 2: 00 5 (400 pc) resolution CO (J = 1 ! 0) observations covering the whole length of the bar in the strongly barred late-type spiral galaxy NGC 7479. CO emission is detected only along a dust lane that traverses the whole length of the bar, including the nucleus. The emission is strongest in the nucleus. The distribution of emission is clumpy along the bar outside the nucleus, ...

2007
N. Lehner

Based on an analysis of the interstellar highly ionised species C IV, Si IV, N V, and O VI observed in the FUSE and HST/STIS E140M spectra of four hot stars in the Large Magellanic Cloud (LMC), we find evidence for a hot LMC halo fed by energetic outflows from the LMC disk and even possibly an LMC galactic wind. Signatures for such outflows are the intermediate and high-velocity components (vLS...

Journal: :journal of sciences islamic republic of iran 0

in this paper, we consider admissible estimation of the parameter ?r in the gamma distribution with truncated parameter space under entropy loss function. we obtain the classes of admissible estimators. the result can be applied to estimation of parameters in the normal, lognormal, pareto, generalized gamma, generalized laplace and other distributions.

2008
S. I. Loubser A. E. Sansom P. Sánchez-Blázquez I. K. Soechting G. E. Bromage

This is the first of a series of papers devoted to the investigation of a large sample of brightest cluster galaxies (BCGs), their kinematic and stellar population properties, and the relationships between those and the properties of the cluster. We have obtained high signal-to-noise ratio, long-slit spectra of these galaxies with Gemini and WHT with the primary purpose of investigating their s...

2005
Annapurni Subramaniam Tushar P. Prabhu

Stellar radial velocity data in the central region of the Large Magellanic Cloud (LMC) are used to estimate its radial velocity curve along various position angles (P.A.’s), including the line of nodes (LON). The central part of the radial velocity profile, along the LON, shows a V-shaped profile—a clear indication of counterrotation. The counterrotating region and the secondary bar have simila...

Journal: :Journal of biomechanical engineering 2004
David Frakes Mark Smith Diane de Zélicourt Kerem Pekkan Ajit Yoganathan

The problem of inter-slice magnetic resonance (MR) image reconstruction is encountered often in medical imaging applications, in such scenarios, there is a need to approximate information not captured in contiguously acquired MR images due to hardware sampling limitations. In the context of velocity field reconstruction, these data are required for visualization and computational analyses of fl...

1999
Perry Y. Li

Velocity field to draw’a circie Passive velocity field control (PVFC) was previously developed for mechanical systems which have strong coordination and must interact with the physical environment. Applications include teleoperated manipulators, contouring in machining and smart exercise machines. The methodology encodes tasks using time invariant desired velocity fields instead of the more tra...

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