Behavior of % MathType!MTEF!2!1!+- % feaagaart1ev2aaatCvAUfKttLearuqr1ngBPrgarmWu51MyVXgatC % vAUfeBSjuyZL2yd9gzLbvyNv2CaeHbd9wDYLwzYbItLDharyavP1wz % ZbItLDhis9wBH5garqqr1ngBPrgifHhDYfgasaacH8WrFz0dbbf9q8 % WrFfeuY-Hhbbf9v8qqaqFr0dd9qqFj0dXdbba91qpepGe9FjuP0-is % 0dXdbba9pGe9xq-Jbba9suk9fr-xfr-xfrpeWZqaaeaabiGaciaaca % qabeaadaabauaaaOqaaGGaaiqb-f7aHzaaraWaa0baaSqaaiab-jda % Yaqaaiab-bdaWaaaaaa!43BC! $$ \bar \alpha _2^0 $$ T of aqueous urea near the singularity point

2009 ◽  
Vol 50 (6) ◽  
pp. 1188-1192 ◽  
Author(s):  
V. P. Korolev
Keyword(s):  
Aqueous Urea ◽  
Singularity Point

Virucidal (Rabies and Poliomyelitis) Activity of Aqueous Urea Solutions

1936 ◽  
Vol 35 (1) ◽  
pp. 74-76 ◽  
Author(s):  
E. M. Mackay ◽  
C. R. Schroeder
Keyword(s):  
Aqueous Urea

Stabilization of the Ship Motion by Restricted Control

2020 ◽  
Vol 28 (4) ◽  
pp. 106-123
Author(s):  
G.M. Dovgobrod ◽  
Keyword(s):  
Feedback Linearization ◽  
Control Algorithm ◽  
Linearization Method ◽  
Ship Motion ◽  
Control Law ◽  
Motion Model ◽  
Lateral Deviation ◽  
Bounded Curvature ◽  
Trajectory Attractor ◽  
Singularity Point

. The article presents an algorithm for controlling the motion of an insufficiently controlled ship along a trajectory with a continuous bounded curvature, based on the feedback linearization method. The algorithm allows restricting the control signal, while the state vector of the ship motion model does not approach the singularity point of the control law. The control algorithm returns the ship to the specified trajectory-attractor at any lateral deviation of the ship from the specified trajectory.

Wave characteristics in elliptical orthorhombic media

Geophysics ◽  
2021 ◽  
pp. 1-52
Author(s):  
Alexey Stovas ◽  
Yuriy Roganov ◽  
Vyacheslav Roganov
Keyword(s):  
Anisotropic Medium ◽  
Wave Equations ◽  
Reference Model ◽  
Relative Magnitude ◽  
P Wave ◽  
S Wave ◽  
Wave Characteristics ◽  
Singularity Point ◽  
Wave Properties ◽  
Wave Modes

An elliptical anisotropic medium is defined as a simplified representation of anisotropy in which the anelliptic parameters are set to zero in all symmetry planes. Despite of the fact that this model is rather seldom observed for real rocks, it is often used as a reference model. The P-wave equations for an elliptical anisotropic medium is well known. However, the S-wave equations have not been derived. Thus, we define all wave modes in elliptical orthorhombic models focusing mostly on the S-wave properties. We show that all wave modes in elliptical orthorhombic model are generally coupled and analyze the effect of additive coupling term. As the result, there is an S wave fundamental singularity point located in one of the symmetry planes depending on the relative magnitude of S wave stiffness coefficients.

Sign in / Sign up

Export Citation Format

Share Document