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Journal articles on the topic 'Instability constant'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

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1

Monastra, A. G., M. F. Carusela, M. V. D’Angelo, and L. Bruno. "Filament instability under constant loads." Journal of Physics: Conference Series 1012 (April 2018): 012010. http://dx.doi.org/10.1088/1742-6596/1012/1/012010.

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2

Wallace, J. M., and E. M. Epperlein. "Weibel instability with constant driving source." Physics of Fluids B: Plasma Physics 3, no. 7 (1991): 1579–86. http://dx.doi.org/10.1063/1.859677.

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3

Çakırlı, Ö. "“Constant” eclipsing binary in the instability strip." New Astronomy 37 (May 2015): 70–75. http://dx.doi.org/10.1016/j.newast.2014.12.006.

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4

Chan, San To, Stylianos Varchanis, Simon J. Haward, and Amy Q. Shen. "Torsional instability of constant viscosity elastic liquid bridges." Soft Matter 18, no. 10 (2022): 1965–77. http://dx.doi.org/10.1039/d1sm01804c.

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5

Petrov, A. G., and M. A. Yudin. "Cylinder instability in bounded flow with constant vorticity." Journal of Physics: Conference Series 894 (October 2017): 012126. http://dx.doi.org/10.1088/1742-6596/894/1/012126.

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6

Alipour, M. J., and A. Lashkari. "Sand instability under constant shear drained stress path." International Journal of Solids and Structures 150 (October 2018): 66–82. http://dx.doi.org/10.1016/j.ijsolstr.2018.06.003.

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7

GIDDINGS, STEVEN B. "THE CONFORMAL FACTOR AND THE COSMOLOGICAL CONSTANT." International Journal of Modern Physics A 05, no. 19 (1990): 3811–29. http://dx.doi.org/10.1142/s0217751x9000163x.

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The issue of the conformal factor in quantum gravity is examined for Lorentzian signature spacetimes. In Euclidean signature, the “wrong” sign of the conformal action makes the path integral undefined, but in Lorentzian signature this sign is tied to the instability of gravity and once this is accounted for the path integral should be well-defined. In this approach it is not obvious that the Baum-Hawking-Coleman mechanism for suppression of the cosmological constant functions. It is conceivable that since the multiuniverse system exhibits an instability for positive cosmological constant, the

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8

Tahiri, Abdellah, Mohamed Idiri, and Brahim Boubeker. "Mechanicals Behaviors of Tungsten-Rhenium Alloy Single Crystals from 77K to 300K - Atomic Simulation Study." International Journal of Engineering Research in Africa 50 (September 2020): 177–81. http://dx.doi.org/10.4028/www.scientific.net/jera.50.177.

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The elastic constants of tungsten-rhenium alloy single crystals were calculated by simulation atomic method using embedded method atom of interatomic potential. The found results show that elastic constants are proportional to the rhenium concentration up to 25 at% Re at room temperature. By following, we observed the elastic constant C44 dependency of temperature and decreased of elastic constant C’=1/2(C11-C12) when the Re atom addition increases. We have found that a growing instability of the bcc crystal structure. Our parameter calculation model is in good agreement with experimental data

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9

Matsebula, Lindiwe Fortunate. "Shoulder Function Following Latarjet Procedure for Recurrent Anterior Shoulder Instability." Journal of Orthopaedics & Bone Disorders 5, no. 1 (2021): 1–8. http://dx.doi.org/10.23880/jobd-16000205.

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Introduction: Anterior shoulder dislocation and recurrent glenohumeral instability is very common in the young active population. It is usually caused by trauma, and often compounded by associated bony Bankart and Hill-Sachs lesions, which distort the anatomy. This causes instability and dysfunction of the joint and these can be addressed by, amongst others, a Latarjet surgical procedure. Hypothesis: We hypothesize that since the Latarjet procedure results in stability and good functional outcome, our results are expected to compare favourably to the rest of the published literature. Methods:

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10

Obligado, Martín, Nathanaël Machicoane, Agathe Chouippe, Romain Volk, Markus Uhlmann, and Mickaël Bourgoin. "Path instability on a sphere towed at constant speed." Journal of Fluids and Structures 58 (October 2015): 99–108. http://dx.doi.org/10.1016/j.jfluidstructs.2015.08.003.

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11

SHIMOKAWA, MICHIKO, and SHONOSUKE OHTA. "ANNIHILATIVE FRACTALS FORMED IN RAYLEIGH-TAYLOR INSTABILITY." Fractals 20, no. 01 (2012): 97–104. http://dx.doi.org/10.1142/s0218348x12500090.

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We report on a fractal pattern formed in Rayleight-Taylor instability. The fractal dimension is 1.88 ± 0.06, which is constant in time t > t1 = 70 s. The pattern area decreases according to exp (-t/τ), where t and τ are time and time constant 69.8 s, respectively. τ agrees with t1. This result leads that it is important for the fractal formation that sufficient annihilation of the heavier solution at the surface.

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12

Nasir, M. N. M., Awang Jusoh, and Alias Khamis. "DC Bus Instability Driving by Photovoltaic Source with Constant Power Load." Applied Mechanics and Materials 313-314 (March 2013): 853–57. http://dx.doi.org/10.4028/www.scientific.net/amm.313-314.853.

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This study presented the DC bus instability in distributed power system driving by Photovoltaic (PV) source with constant power load (CPL). The aim of this study is to investigate the effect of PV source towards the performances of DC bus voltage stability using constant power load. The system first was tested using linear DC supply as voltage source and CPL was modeled and connected to the voltage source through LC filter network. A passive damping circuit was chosen to stabilize the DC bus instability. The system was repeated using PV source. PV array was modeled based on the parameters obta

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13

MOFFAT, J. W. "GRAVITATIONAL INSTABILITY OF THE VACUUM AND THE COSMOLOGICAL CONSTANT PROBLEM." International Journal of Modern Physics A 20, no. 19 (2005): 4683–89. http://dx.doi.org/10.1142/s0217751x05028387.

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A mechanism for suppressing the cosmological constant is described, using a superconducting analogy in which fermions coupled perturbatively to gravitons are in an unstable false vacuum. The coupling of the fermions to gravitons and a screened attractive interaction among pairs of fermions generates fermion condensates with zero momentum and a phase transition induces a non-perturbative transition to a true vacuum state. This produces a positive energy gap Δ in the vacuum energy identified with [Formula: see text] where Λ is the cosmological constant. In the strong coupling limit, a large cosm

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14

Li, Wei, Zhiwei Song, Xuexia Gao, and Zhigang Chen. "Dynamic Instability Analysis of a Rotating Ship Shaft under a Periodic Axial Force by Discrete Singular Convolution." Shock and Vibration 2015 (2015): 1–11. http://dx.doi.org/10.1155/2015/482607.

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Dynamic instability of a rotating ship shaft subjected to a periodic axial force is studied by using discrete singular convolution (DSC) with regularized Shannon’s delta kernel. The excitation frequency is related to the spinning speed and the number of blades on the propeller. Effects of number of blades, constant term in the periodic force, and damping on dynamic instability regions are investigated. The results have shown that the increase of number of blades and damping could improve the dynamic stability of rotating shaft with damping. The increase of constant term in the periodic force l

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15

Kuznetsov, V. D. "Magnetic Buoyancy with Viscosity and Ohmic Dissipation and Flux Tube Formation." Symposium - International Astronomical Union 142 (1990): 58–59. http://dx.doi.org/10.1017/s0074180900087726.

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In the framework of the magnetohydrodynamic equations with dissipative terms in the form of turbulent viscosity (Vt) the linear stage of the instability of a subphotospheric field with respect to magnetic buoyancy is considered. For an exponential in z, isothermal plane-parallel atmosphere with a constant Alfvenic velocity the perturbations of the form are described by differential equation with constant coefficients. The qualitative dependence of the growth rate of instability on transverse wave number is determined (see Figures 1 and 2) and characteristic scales of the magnetic tubes are eva

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16

BIRTEA, PETRE. "INSTABILITY IN THE PRESENCE OF AN INDEFINITE CONSERVATION LAW." International Journal of Geometric Methods in Modern Physics 07, no. 03 (2010): 425–30. http://dx.doi.org/10.1142/s0219887810004373.

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Consider a C1 vector field X on a finite-dimensional manifold M and xe an equilibrium point for the dynamics [Formula: see text]. We will prove that if I is a C2 constant of motion for X such that xe is also a critical point of I, then [Formula: see text] is a constant of motion for the linearized system [Formula: see text]. As a consequence we will give an instability result under the condition that [Formula: see text] is an indefinite quadratic form. If xe is not a critical point of I, then we obtain [Formula: see text] as a constant of motion for the linearized system.

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17

Junaideen, Sainulabdeen Mohamed, Leslie George Tham, and Chack Fan Lee. "Instability of Compacted Residual Soil." Geosciences 11, no. 10 (2021): 403. http://dx.doi.org/10.3390/geosciences11100403.

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Static liquefaction of loose sands has been observed to initiate at stress ratios far less than the steady-state stress ratio. Different collapse surface concepts largely based on undrained triaxial test results have been proposed in the literature to explain the above instability phenomenon of loose sands. Studies of the instability behavior of fill material derived from residual soils remain limited. The present study investigated the instability behavior of a compacted residual soil using the conventional undrained triaxial tests and specially equipped constant shear triaxial tests. The tes

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18

Joo, Y., and V. K. Dhir. "On the Mechanism of Fluidelastic Instability of a Tube Placed in an Array Subjected to Two-Phase Crossflow." Journal of Fluids Engineering 117, no. 4 (1995): 706–12. http://dx.doi.org/10.1115/1.2817326.

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In this work, the fluidelastic instability of a tube placed in an array subjected to two-phase crossflow has been studied. For the determination of fluidelastic instability, acrylic tubes 2.2 cm or 2.37 cm in diameter and 20 cm in length were arranged in a triangular array with pitch to diameter ratio of 1.4 and 1.3. The test tube was flexibly supported with two cantilever beams. By installing cantilever beams horizontally and vertically, drag and lift direction tube vibration were studied. The total damping ratio is found to increase as the liquid gap velocity or void fraction increases. It h

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19

Schilstra, M. J., P. M. Bayley, and S. R. Martin. "The effect of solution composition on microtubule dynamic instability." Biochemical Journal 277, no. 3 (1991): 839–47. http://dx.doi.org/10.1042/bj2770839.

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The exchange of tubulin dimer into steady-state microtubules was studied over a range of solution conditions, in order to assess the effects of various common buffer components on the dynamic instability of microtubules. In comparison with standard buffer conditions (100 mM-Pipes buffer, pH 6.5, containing 0.1 mM-EGTA, 1.8 mM-MgC12 and 1 M-glycerol), the rate and extent of exchange, and thus of dynamic instability, are suppressed by increasing the concentration of glycerol above 2 M. Exchange is enhanced by the addition of further Mg2+ (up to 17 mM) or by the addition of Ca2+ (up to 0.4 mM). P

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20

Capone, Florinda, Roberta De Luca, and Isabella Torcicollo. "Instability of Vertical Constant Through Flows in Binary Mixtures in Porous Media with Large Pores." Mathematical Problems in Engineering 2019 (February 12, 2019): 1–8. http://dx.doi.org/10.1155/2019/7379597.

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A binary mixture saturating a horizontal porous layer, with large pores and uniformly heated from below, is considered. The instability of a vertical fluid motion (throughflow) when the layer is salted by one salt (either from above or from below) is analyzed. Ultimately boundedness of solutions is proved, via the existence of positively invariant and attractive sets (i.e. absorbing sets). The critical Rayleigh numbers at which steady or oscillatory instability occurs are recovered. Sufficient conditions guaranteeing that a secondary steady motion or a secondary oscillatory motion can be obser

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21

Tyagi, P. K., and J. Dey. "Linear Instability of Laterally Strained Constant Pressure Boundary-Layer Flows." AIAA Journal 39, no. 3 (2001): 526–27. http://dx.doi.org/10.2514/2.1338.

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22

Tyagi, P. K., and J. Dey. "Linear Instability of Laterally Strained Constant Pressure Boundary-Layer Flows." AIAA Journal 40, no. 9 (2002): 1916. http://dx.doi.org/10.2514/2.1874.

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23

Axenides, Minos, George Georgiou, and Zacharias Roupas. "Gravothermal instability with a cosmological constant in the canonical ensemble." Journal of Physics: Conference Series 410 (February 8, 2013): 012130. http://dx.doi.org/10.1088/1742-6596/410/1/012130.

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24

SAKA, Masumi, Mikio MURAOKA, and Hiroyuki ABE. "Ductile instability of time-dependent crack growth under constant loading." Transactions of the Japan Society of Mechanical Engineers Series A 54, no. 497 (1988): 14–23. http://dx.doi.org/10.1299/kikaia.54.14.

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25

El-Sayed, M. F. "Electrohydrodynamic Taylor-Helmholtz instability of a liquid with constant shear." Physica Scripta 55, no. 3 (1997): 350–54. http://dx.doi.org/10.1088/0031-8949/55/3/014.

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26

Tyagi, P. K., and J. Dey. "Linear instability of laterally strained constant pressure boundary-layer flows." AIAA Journal 39 (January 2001): 526–27. http://dx.doi.org/10.2514/3.14762.

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27

Gadkari, P., and S. Ghosh. "Brillouin Instability in Longitudinally Magnetized Crystals with High Dielectric Constant." physica status solidi (b) 172, no. 2 (1992): 709–18. http://dx.doi.org/10.1002/pssb.2221720222.

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28

Guo, Yan. "Instability of symmetric vortices with large charge and coupling constant." Communications on Pure and Applied Mathematics 49, no. 10 (1996): 1051–80. http://dx.doi.org/10.1002/(sici)1097-0312(199610)49:10<1051::aid-cpa2>3.0.co;2-d.

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29

Selke, David L. "A Classical Approach to Nuclear Instability." European Journal of Applied Physics 3, no. 5 (2021): 45–46. http://dx.doi.org/10.24018/ejphysics.2021.3.5.109.

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We extend a classical model of nuclei to include geometry as well as electron-like shells, then apply the model to the moments leading up to nuclear decay. The model leads to the well-known half-life or constant probability of a given nucleus to decay in a given time.

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30

Galkowski, Jeffrey. "Pseudospectra of semiclassical boundary value problems." Journal of the Institute of Mathematics of Jussieu 14, no. 2 (2014): 405–49. http://dx.doi.org/10.1017/s1474748014000061.

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AbstractWe consider operators$ - \Delta + X $, where$ X $is a constant vector field, in a bounded domain, and show spectral instability when the domain is expanded by scaling. More generally, we consider semiclassical elliptic boundary value problems which exhibit spectral instability for small values of the semiclassical parameter$h$, which should be thought of as the reciprocal of the Péclet constant. This instability is due to the presence of the boundary: just as in the case of$ - \Delta + X $, some of our operators are normal when considered on$\mathbb{R}^d$. We characterize the semiclass

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31

Koršunovs, Aleksandrs, Valters Vēciņš, and Vilnis Juris Turkovs. "Distance Sensor and Wheel Encoder Sensor Fusion Method for Gyroscope Calibration." Applied Computer Systems 26, no. 2 (2021): 71–79. http://dx.doi.org/10.2478/acss-2021-0009.

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Abstract MEMS gyroscopes are widely used as an alternative to the more expensive industrial IMUs. The instability of the lower cost MEMS gyroscopes creates a large demand for calibration algorithms. This paper provides an overview of existing calibration methods and describes the various types of errors found in gyroscope data. The proposed calibration method for gyroscope constants provides higher accuracy than datasheet constants. Furthermore, we show that using a different constant for each direction provides even higher accuracy.

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32

A., Agrawal*1 N.Yadav2 &. S.Ghosh3. "DIFFUSION-INDUCED MODULATIONAL INSTABILITY IN SEMICONDUCTOR QUANTUM PLASMA WITH STRAIN DEPENDENT DIELECTRIC CONSTANT." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6, no. 10 (2017): 381–89. https://doi.org/10.5281/zenodo.1012553.

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In the present paper we report the diffusion-induced modulational instability (MI) of an intense laser beam in materials (BaTiO<sub>3</sub>) with high dielectric constant using quantum hydrodynamic model of plasmas including Bohm potential and Fermi degenerate pressure. For the study of modulation interaction, we have considered that the origin of this nonlinear interaction lies in the third order nonlinear electrical susceptibility arising due to diffusion-induced nonlinear current density and strain dependent polarization of the medium. We have studied the qualitative behavior of parametric

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33

Liu, Beiyuan. "A Damping Control for DC Distribution System Under Isolated Operation Mode." Journal of Physics: Conference Series 2452, no. 1 (2023): 012013. http://dx.doi.org/10.1088/1742-6596/2452/1/012013.

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Abstract There are risks of resonant instability exiting in the DC distribution system configured with battery energy storage devices because of capacitors and inductors in the network with fast speed-controlled DC-DC converters. The DC distribution system needs battery energy storage devices to provide DC voltage support when it operates in an isolated island mode because of no AC or DC sources at that moment. To explore the key factors affecting the resonant instability of DC network, a three-terminal DC network consisting of DC voltage control, constant current control, and constant power l

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34

Nanua, P., and K. J. Waldron. "Instability and Chaos in Quadruped Gallop." Journal of Mechanical Design 116, no. 4 (1994): 1096–101. http://dx.doi.org/10.1115/1.2919492.

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A dynamic model for the two-dimensional quadruped has been developed. The main body is modelled as a rigid bar and each leg consists of a constant stiffness spring, a viscous damper and a force actuator. Based on symmetry principles, a controller has been devised that will enable the quadruped to gallop at constant speed. The controller consists of two parts: an energy controller which will apply the required amount of force through the legs, and the speed controller that will control the forward speed by appropriately placing the legs. It will be shown that the body pitch need not be explicit

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35

Unger, R. Zackary, Jeremy M. Burnham, Lee Gammon, Chaitu S. Malempati, Cale A. Jacobs, and Eric C. Makhni. "The Responsiveness of Patient- Reported Outcome Tools in Shoulder Surgery Is Dependent on the Underlying Pathological Condition." American Journal of Sports Medicine 47, no. 1 (2018): 241–47. http://dx.doi.org/10.1177/0363546517749213.

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Background: Given the high number of available patient-reported outcome (PRO) tools for patients undergoing shoulder surgery, comparative information is necessary to determine the most relevant forms to incorporate into clinical practice. Purpose: To determine the utilization and responsiveness of common PRO tools in studies involving patients undergoing arthroscopic rotator cuff repair or operative management of glenohumeral instability. Study Design: Systematic review. Methods: A systematic review of rotator cuff and instability studies from multiple databases was performed according to PRIS

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36

Awang, Bin Jusoh, Firdaus Abd Razak Muhammad, Hamka Bin Saiful Mohamad, and Sutikno Tole. "Passive Damper Network in a Simple DC Distribution Power System." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 1 (2018): 544–55. https://doi.org/10.11591/ijece.v8i1.pp544-555.

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Distributed power system (DPS) distributes power amongst processing units such as power electronics converters with DC system. Due to the increasing usage of power converters in DPS system, the system becomes unstable and the converter tends to draw constant power needed by the load of the system. Constant power load (CPL) characteristic has negative input impedance that could produce instability problems in the DC bus system. Passive damping network which consists of series RC damping circuit was connected in parallel to the DC bus system with the purpose to reduce the instability. The passiv

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37

Wu, Guochun, Lei Yao, and Yinghui Zhang. "On instability of a generic compressible two-fluid model in R3." Nonlinearity 36, no. 9 (2023): 4740–57. http://dx.doi.org/10.1088/1361-6544/ace818.

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Abstract This paper concerns the study of instability of a generic compressible two-fluid model in the whole space R 3 , where the capillary pressure f ( α − ρ − ) = P + − P − ≠ 0 is taken into account. For the case that the capillary pressure is a strictly decreasing function near the equilibrium, namely, f ′ ( 1 ) < 0 , Evje et al (2016 Arch. Ration. Mech. Anal. 221 1285–316) established global stability of the constant equilibrium state for the three-dimensional Cauchy problem under some smallness assumptions. Recently, Wu et al (2022 arXiv:2204.10706) proved global stability of the cons

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38

Hsu, H. C., C. Kharif, M. Abid, and Y. Y. Chen. "A nonlinear Schrödinger equation for gravity–capillary water waves on arbitrary depth with constant vorticity. Part 1." Journal of Fluid Mechanics 854 (September 3, 2018): 146–63. http://dx.doi.org/10.1017/jfm.2018.627.

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A nonlinear Schrödinger equation for the envelope of two-dimensional gravity–capillary waves propagating at the free surface of a vertically sheared current of constant vorticity is derived. In this paper we extend to gravity–capillary wave trains the results of Thomas et al. (Phys. Fluids, 2012, 127102) and complete the stability analysis and stability diagram of Djordjevic & Redekopp (J. Fluid Mech., vol. 79, 1977, pp. 703–714) in the presence of vorticity. The vorticity effect on the modulational instability of weakly nonlinear gravity–capillary wave packets is investigated. It is shown

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39

Kemp, Kyle A. R., David M. Sheps, Lauren A. Beaupre, Fiona Styles-Tripp, Charlene Luciak-Corea, and Robert Balyk. "An Evaluation of the Responsiveness and Discriminant Validity of Shoulder Questionnaires among Patients Receiving Surgical Correction of Shoulder Instability." Scientific World Journal 2012 (2012): 1–7. http://dx.doi.org/10.1100/2012/410125.

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Health-related quality-of-life (HRQL) measures must detect clinically important changes over time and between different patient subgroups. Forty-three patients (32 M, 13 F; mean age = 26.00 ± 8.19 years) undergoing arthroscopic Bankart repair completed three validated shoulder questionnaires (Western Ontario Shoulder Instability index (WOSI), American Shoulder and Elbow Surgeons Standardized Shoulder Assessment form (ASES), Constant score) preoperatively, and at 6, 12, and 24 months postoperatively. Responsiveness and discriminant validity was assessed between those with a satisfactory outcome

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40

Kerrebrock, J. L., and J. Kalamas. "Flow instability in plane-parallel particle beds with constant volumetric heating." Journal of Propulsion and Power 11, no. 5 (1995): 1028–35. http://dx.doi.org/10.2514/3.23933.

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41

Midgley, T. L., G. A. Fox, G. V. Wilson, D. M. Heeren, E. J. Langendoen, and A. Simon. "Seepage-Induced Streambank Erosion and Instability: In Situ Constant-Head Experiments." Journal of Hydrologic Engineering 18, no. 10 (2013): 1200–1210. http://dx.doi.org/10.1061/(asce)he.1943-5584.0000685.

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42

SAIGO, Muneharu, and Takuzo IWATSUBO. "Instability of rotating system coupled by Constant Velocity joints (2nd report)." Transactions of the Japan Society of Mechanical Engineers Series C 52, no. 473 (1986): 258–63. http://dx.doi.org/10.1299/kikaic.52.258.

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43

Binétruy, P., J. M. Cline, and C. Grojean. "Dynamical instability of brane solutions with a self-tuning cosmological constant." Physics Letters B 489, no. 3-4 (2000): 403–10. http://dx.doi.org/10.1016/s0370-2693(00)00932-1.

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44

Fang, Kuo-Lung, and Bing-Yue Tsui. "Metal drift induced electrical instability of porous low dielectric constant film." Journal of Applied Physics 93, no. 9 (2003): 5546–50. http://dx.doi.org/10.1063/1.1563292.

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45

Liu, Feng, Jinsheng Lv, Bo Zhang, and Zhuqiang Yang. "Nonlinear stability analysis of Ledinegg instability under constant external driving force." Chemical Engineering Science 206 (October 2019): 432–45. http://dx.doi.org/10.1016/j.ces.2019.05.035.

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46

Herbst, Ira, and Juliane Rama. "Instability of Pre-Existing Resonances Under a Small Constant Electric Field." Annales Henri Poincaré 16, no. 12 (2014): 2783–835. http://dx.doi.org/10.1007/s00023-014-0389-2.

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47

Chen, Qi, Qi Wen, Xianmin Zhang, Yong Yang, and Suhua Xiao. "Buckling-induced instability in topology optimization of compliant constant-force mechanisms." Mechanism and Machine Theory 191 (January 2024): 105475. http://dx.doi.org/10.1016/j.mechmachtheory.2023.105475.

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48

Balan, Corneliu. "Pure Material Instability and the Concept of Yield Stress." Applied Rheology 9, no. 2 (1999): 58–63. http://dx.doi.org/10.1515/arh-2009-0004.

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Abstract The paper is concerned with the rheological study of gels, complex materials which are characterised by an internal network structure developed in viscous liquids. This category of materials exhibits in viscometric motion a yield state at a critical value of the applied shear stress. The yield shear stress defines the plateau behaviour in the steady flow curve. The creeping experiments and the dynamics of the Oldroyd’s 3 constants model put in evidence the connection between the loss of stability of the network structure and the coexisting strain rates at a constant shear stress. The

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49

ZHU, DAVID Z., and GREGORY A. LAWRENCE. "Holmboe's instability in exchange flows." Journal of Fluid Mechanics 429 (February 25, 2001): 391–409. http://dx.doi.org/10.1017/s002211200000286x.

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A laboratory study of the exchange of two fluids of different density through a constant-width channel with an underwater sill has enabled us to study Holmboe's instability in greater detail than has been possible in mixing-layer experiments. The internal hydraulics of the exchange flow are such that we have been able to observe the initiation of instability, the development and behaviour of both symmetric and asymmetric Holmboe instabilities, and the suppression of the instability at bulk Richardson numbers above about 0.7. A number of stability criteria resulting from previous numerical inve

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Niknam, A. R., S. Barzegar, B. Bokaei, F. Haji Mirzaei, and A. Aliakbari. "Collisional effects on the modulational instability of intense laser pulses in magnetoactive plasmas." Laser and Particle Beams 33, no. 4 (2015): 705–11. http://dx.doi.org/10.1017/s0263034615000889.

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Abstract:

AbstractThe modulational instability associated with propagation of an intense laser pulse through a transversely magnetized plasma is investigated in the presence of collisional effects. The source-dependent expansion method for analyzing the wave equation is employed. The dispersion relation is obtained and modulational instability and its growth rate are studied. It is shown that in the absence of collisional effects the modulational instability is restricted to the small wavenumber region and the constant magnetic field reduces the growth rate of the instability. In contrast, in the collis

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