Results 221 to 230 of about 20,515 (265)

MATHEMATICAL ROTATION OF ORIENTATION DATA

Geological Society of America Bulletin, 1964
Three-dimensional rotation, usually done graphically with a stereographic or equal-area net, may be performed mathematically by means of a 3 by 3 matrix. Digital computer programs based on the matrix should be useful in structural and sedimentation studies.
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Mathematical Modeling of the Polymer Rotational Molding

Volume 1: Symposia, Parts A and B, 2007
We study the rimming flow of a viscoelastic film on the inner surface of a horizontal rotating cylinder. Simple lubrication theory is applied assuming that the Reynolds number is small and the liquid film is thin. For the steady-state flow of the Upper-Convected Maxwell (UCM) fluid the mathematical model reduces to a first order nonlinear ODE for the ...
Sergei A. Fomin, Konstantin G. Kornev, Chris Wolter, Jon Young, Tyler Brandenburg   +4 more
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Modeling Crop Rotation with Discrete Mathematics

2018
The module develops discrete mathematics models that allow for creation of crop rotation schedules meeting a variety of needs.
Cartier, Jennifer, Myers, Kellen, Ferguson, Victoria, Voskoboynik, Yekaterina   +3 more
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Mathematical properties of the rotational diffusion equation

Journal of Physics A: Mathematical and General, 2001
Summary: An iterative scheme for the approximative solution of the Galerkin system of the linear rotational diffusion equation for the chromophore distribution in nonlinear optical polymers is formulated. Uniformly valid asymptotic steady-state solutions are obtained in terms of power series expansions in the normalized static field and the convergence
Wyller, John, Pedersen, Thomas Garm; id_orcid 0000-0002-9466-6190, Johansen, Per Michael   +2 more
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[Mathematical model of the rotation of cornea].

Journal francais d'ophtalmologie, 1991
The aim of our study is to informatise the procedure, ie, design the computer system and software necessary to automatically define the parameters of our problem. To achieve this, we have used an image analyser which permits us to acquire and digitalise a photograph of the lesioned cornea.
I, Karpouzas, Y, Pouliquen
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Codman's paradox of the arm rotations is not a paradox: mathematical validation

Medical Engineering & Physics, 1998
Movement of a straight arm centred at the shoulder joint in three successive 90 degrees rotations, each around the respective orthogonal coordinate axis, leads to an apparently unrelated 90 degrees rotation around the longitudinal arm axis. This empirical fact is known as Codman's paradox, after a Bostonian surgeon who first reported it in 1934 ...
J C, Politti, G, Goroso, M E, Valentinuzzi, O, Bravo   +3 more
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Mathematical model of decolourization in a rotating disc reactor

Biochemical Engineering Journal, 2015
Abstract This work presents a mathematical model of the biodegradation of an organic dye in a rotating disc reactor operated in a batch mode with discs coated with a mycelium of a white-rot fungus. The two-dimensional model domain represents the surface of one half of a disc. The disc is considered to be covered with two layers (biofilm, liquid film)
T. Skybová, M. Přibyl, P. Hasal
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Isomorphism of Mathematical Descriptions of the Rotation Operation

Mechanics of Solids, 2018
Currently the practice of constructing various algorithms of inertial navigation, including strapdown navigation system (SINS), indicates that two mathematical methods for describing rotation are mainly used: using quaternions or direction cosines. Moreover, in SINS algorithms it is often convenient to use two of these parameter systems in parallel ...
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Mathematical model of pneumatic multichamber rotational drive

Soviet Mining Science, 1986
A mathematical model of a pneumatic rotary drill is described which incorporates the pneumatic and thermodynamic parameters of the drill into a design optimization formulation from the standpoint of rock drilling in the mining industry.
N. N. Labuzov, A. Ya. Tishkov, L. N. Afanas'ev   +2 more
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Mathematical optimization of rolling stock rotations

2017
We show how to optimize rolling stock rotations that are required for the operation of a passenger timetable. The underlying mathematical ptimization problem is called rolling stock rotation problem (RSRP) and the leitmotiv of the thesis is RotOR, i.e., a highly integrated optimization algorithm for the RSRP. RotOR is used by DB Fernverkehr AG (DBF) in
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