Results 61 to 70 of about 3,936,282 (345)

Casimir effect on the radius stabilization of the noncommutative torus [PDF]

open access: yesPhysics Letters B, 2001
We evaluate the one-loop correction to the spectrum of Kaluza-Klein system for the $ ^3$ model on $R^{1,d}\times (T_ ^2)^L$, where $1+d$ dimensions are the ordinary flat Minkowski spacetimes and the extra dimensions are the L two-dimensional noncommutative tori with noncommutativity $ $.
openaire   +3 more sources

Analytical stability models for turning and boring operations [PDF]

open access: yes, 2006
In this paper an analytical model for stability limit predictions in turning and boring operations is proposed. The multi-dimensional model includes the 3D geometry of the processes. In addition a model for the chip thickness at the insert nose radius is
Budak, Erhan, Ozlu, Emre, Özlü, Emre
core  

Quantum gravity effects on statistics and compact star configurations

open access: yes, 2010
The thermodynamics of classical and quantum ideal gases based on the Generalized uncertainty principle (GUP) are investigated. At low temperatures, we calculate corrections to the energy and entropy. The equations of state receive small modifications. We
A Kempf   +26 more
core   +1 more source

Data‐driven forecasting of ship motions in waves using machine learning and dynamic mode decomposition

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
Summary Data‐driven forecasting of ship motions in waves is investigated through feedforward and recurrent neural networks as well as dynamic mode decomposition. The goal is to predict future ship motion variables based on past data collected on the field, using equation‐free approaches.
Matteo Diez   +2 more
wiley   +1 more source

The Effect of Rounding in Bump Foil Structure on the Dynamic Performance of Foil Journal Bearings

open access: yesTribology Online, 2019
The performance of air foil journal bearings is closely related to the stiffness of the bump foil. In this paper, the stiffness characteristics of bump foil having a rounding in the structure are investigated and compared with previous models.
Hongyang Hu, Ming Feng
doaj   +1 more source

Calculation of the Stability Radius of an Optimal Line Balance

open access: yes, 2012
For an assembly line, it is necessary to minimize the cycle time for processing a partially ordered set of operations V = {1, …, n} on a set of m linearly ordered working stations. The number m of stations and the initial processing times t = (t1, …, tn)
Y. Sotskov, F. Werner, A. Zatsiupa
semanticscholar   +1 more source

Biomechanical analysis of the effect of congruence, depth and radius on the stability ratio of a simplistic ‘ball-and-socket’ joint model

open access: yesBone & Joint Research, 2016
Objectives The bony shoulder stability ratio (BSSR) allows for quantification of the bony stabilisers in vivo. We aimed to biomechanically validate the BSSR, determine whether joint incongruence affects the stability ratio (SR) of a shoulder model, and ...
L. Ernstbrunner   +6 more
semanticscholar   +1 more source

Absolute Stability Limit for Relativistic Charged Spheres

open access: yes, 2007
We find an exact solution for the stability limit of relativistic charged spheres for the case of constant gravitational mass density and constant charge density. We argue that this provides an absolute stability limit for any relativistic charged sphere
A. Strominger   +12 more
core   +4 more sources

Random Learning Leads to Faster Convergence in ‘Model‐Free’ ILC: With Application to MIMO Feedforward in Industrial Printing

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
The cost as a function of the number of experiments for a non‐symmetric 21×21$$ 21\times 21 $$ system. Four approaches are shown: the proposed stochastic conjugate gradient ILC (SCGILC) method (), deterministic conjugate gradient ILC (), stochastic gradient descent ILC () and deterministic gradient descent ILC ().
Leontine Aarnoudse, Tom Oomen
wiley   +1 more source

On the stability of convex symmetric polytopes of matrices

open access: yesElectronic Journal of Differential Equations, 2000
In this warticle we investigate the stability properties of a convex symmetric time-varying second-order matrix's polytope depending on a real positive parameter $r$.
Gilner de la Hera Martinez   +2 more
doaj  

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