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Analysis of Shock Pulses from a Small Velocity Amplifier
"... The theme of this paper is a velocity amplification machine for highg shock testing of microscale devices. The machine uses multiple sequential impacts to amplify velocity through a system of progressively smaller masses constrained to move in the vertical axis. Shock pulses are created through th ..."
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the finite collinear metal rod impact between the penultimate and ultimate masses, imparting shock pulses in excess of 20,000G for an impact velocity of approximately 4.2m/s. For standalone application or as an attachment to a drop table, the machine represents a smallscale and inexpensive alternative
Towards A PhysicsMotivated SmallVelocities Approximation to General Relativity
"... In the general case, complex nonlinear partial differential equations of General Relativity are very hard to solve. Thus, to solve the corresponding physical problems, usually appropriate approximations are used. The first approximation to General Relativity is, of course, Newton’s theory of gravit ..."
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approximation, in which strong fields are allowed but velocities are required to be small. We derive the corresponding equations and speculate on their possible physical consequences. 1 Formulation of the Problem Need for approximations to General Relativity. Since its discovery in 1915 and its first
Preprint typeset using L ATEX style emulateapj v. 25/04/01 THE GRAVITATIONAL SUPPRESSION HYPOTHESIS: DYNAMICAL ANALYSIS IN THE SMALL VELOCITY REGIME
, 2008
"... In a previous paper we have proposed a non–Newtonian, phenomenological description of the effective gravitational force acting between exotic dark matter and baryons, which was shown to fit well the kinematics in the inner regions of low surface brightness, gas–rich galaxies. The Gravitational Suppr ..."
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In a previous paper we have proposed a non–Newtonian, phenomenological description of the effective gravitational force acting between exotic dark matter and baryons, which was shown to fit well the kinematics in the inner regions of low surface brightness, gas–rich galaxies. The Gravitational Suppression (GraS) scheme is, admittedly, an adhoc model; it does however successfully address interesting cosmological issues. Here, we test the potential generality of the GraS concept. GraS predictions on motions on scales measurable in dwarf spheroidal galaxies and in the solar neighborhood show significant departures from those of Newtonian mechanics. By analyzing such systems, we find that the paradigm of a universal GraS potential cannot be rejected. Indeed, compared to Newtonian predictions, GraS provides a better description of data, when realistic dark matter density profiles are considered.
AIMS ’ Journals Volume X, Number 0X, XX 200X pp. X–XX SMALL VELOCITY AND FINITE TEMPERATURE VARIATIONS IN KINETIC RELAXATION MODELS
"... (Communicated by the associate editor name) Abstract. A small Knuden number analysis of a kinetic equation in the diffusive scaling is performed. The collision kernel is of BGK type with a general local Gibbs state. Assuming that the flow velocity is of the order of the Knudsen number, a Hilbert e ..."
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(Communicated by the associate editor name) Abstract. A small Knuden number analysis of a kinetic equation in the diffusive scaling is performed. The collision kernel is of BGK type with a general local Gibbs state. Assuming that the flow velocity is of the order of the Knudsen number, a Hilbert
Simulating Water and Smoke with an Octree Data Structure
, 2004
"... We present a method for simulating water and smoke on an unrestricted octree data structure exploiting mesh refinement techniques to capture the small scale visual detail. We propose a new technique for discretizing the Poisson equation on this octree grid. The resulting linear system is symmetric ..."
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Cited by 210 (18 self)
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We present a method for simulating water and smoke on an unrestricted octree data structure exploiting mesh refinement techniques to capture the small scale visual detail. We propose a new technique for discretizing the Poisson equation on this octree grid. The resulting linear system is symmetric
unknown title
, 1995
"... Renormalization of the effective theory for heavy quarks at small velocity ..."
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Renormalization of the effective theory for heavy quarks at small velocity
Selforganizing hierarchical particle swarm optimizer with timevarying acceleration coefficients
 IEEE Transactions on Evolutionary Computation
, 2004
"... Abstract—This paper introduces a novel parameter automation strategy for the particle swarm algorithm and two further extensions to improve its performance after a predefined number of generations. Initially, to efficiently control the local search and convergence to the global optimum solution, tim ..."
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Cited by 194 (2 self)
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to the particle swarm optimization along with TVAC (MPSOTVAC), by adding a small perturbation to a randomly selected modulus of the velocity vector of a random particle by predefined probability. Second, we introduce a novel particle swarm concept “selforganizing hierarchical particle swarm optimizer with TVAC
ASTRONOMY AND ASTROPHYSICS The diffusion of radiation in moving media
"... II. Limits for large and small velocity gradients for deterministic lines ..."
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II. Limits for large and small velocity gradients for deterministic lines
Velocity Measurement System for Small Caliber
"... Abstract The use of state of art instrumentation systems to measure highspeed events has increased tremendously in the past few decades. The current study aimed at measuring the velocity of small caliber projectiles within the desired limits of accuracy. The velocity of the projectile is calculate ..."
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Abstract The use of state of art instrumentation systems to measure highspeed events has increased tremendously in the past few decades. The current study aimed at measuring the velocity of small caliber projectiles within the desired limits of accuracy. The velocity of the projectile
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