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Journal articles on the topic 'Coupled coefficients'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Sorocki, Jakub, Kamil Staszek, Ilona Piekarz, Krzysztof Wincza, and Slawomir Gruszczynski. "Application of RH and LH sections for reduction of coupling coefficients in two-section asymmetric directional couplers." International Journal of Microwave and Wireless Technologies 8, no. 3 (2015): 559–65. http://dx.doi.org/10.1017/s1759078715000410.

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A method allowing for reduction of coupling coefficients required for realization of two-section asymmetrical coupled-line directional couplers has been proposed. It has been shown that by connecting uncoupled left-handed and right-handed transmission lines between two coupled-line sections one can obtain greater design flexibility of the resulting circuit, simultaneously with the coupling reduction in coupled-line sections. Moreover, the proposed circuit features the properties of two-section asymmetric directional couplers offering wide operational bandwidth. The theoretical analysis has bee

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2

Zeng, Xiaohua, Xiling Wu, Changzhou Liang, Chiping Yuan, and Jieping Cai. "Exact Solutions for Coupled Variable Coefficient KdV Equation via Quadratic Jacobi’s Elliptic Function Expansion." Symmetry 15, no. 5 (2023): 1021. http://dx.doi.org/10.3390/sym15051021.

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The exact traveling wave solutions to coupled KdV equations with variable coefficients are obtained via the use of quadratic Jacobi’s elliptic function expansion. The presented coupled KdV equations have a more general form than those studied in the literature. Nine couples of quadratic Jacobi’s elliptic function solutions are found. Each couple of traveling wave solutions is symmetric in mathematical form. In the limit cases m→1, these periodic solutions degenerate as the corresponding soliton solutions. After the simple parameter substitution, the trigonometric function solutions are also ob

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3

Marcuse, D. "Coupling coefficients of coupled laser cavities." IEEE Journal of Quantum Electronics 22, no. 2 (1986): 223–26. http://dx.doi.org/10.1109/jqe.1986.1072958.

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4

Lang, R., and A. Yariv. "Coupling coefficients for coupled-cavity lasers." IEEE Journal of Quantum Electronics 23, no. 3 (1987): 287–89. http://dx.doi.org/10.1109/jqe.1987.1073341.

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5

Baalrud, Scott D. "Transport coefficients in strongly coupled plasmas." Physics of Plasmas 19, no. 3 (2012): 030701. http://dx.doi.org/10.1063/1.3690093.

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6

Sahrawat, Ravinder Kumar, and Poonam. "Reflection-Refraction Coefficients and Energy Ratios in Couple Stress Micropolar Thermoviscous Elastic Solid." International Journal of Applied Mechanics and Engineering 26, no. 2 (2021): 47–69. http://dx.doi.org/10.2478/ijame-2021-0019.

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Abstract The reflection and refraction phenomenon of propagation of waves in couple stress micropolar thermoviscous elastic solid media with independent viscoelastic and micropolar properties have been studied. The structure of the model has been taken such that the plane interface is divides the given media into two half spaces in perfect contact. Here, we find that there are five waves, one of them is propagating independently while others are set of two coupled waves travelling with different speeds. Energy ratios, reflection and refraction coefficients relative to numerous reflected and re

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7

Li, Zhao, Peng Li, and Tianyong Han. "Dynamical Behavior and the Classification of Single Traveling Wave Solutions for the Coupled Nonlinear Schrödinger Equations with Variable Coefficients." Advances in Mathematical Physics 2021 (August 26, 2021): 1–10. http://dx.doi.org/10.1155/2021/9955023.

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In this paper, the dynamical properties and the classification of single traveling wave solutions of the coupled nonlinear Schrödinger equations with variable coefficients are investigated by utilizing the bifurcation theory and the complete discrimination system method. Firstly, coupled nonlinear Schrödinger equations with variable coefficients are transformed into coupled nonlinear ordinary differential equations by the traveling wave transformations. Then, phase portraits of coupled nonlinear Schrödinger equations with variable coefficients are plotted by selecting the suitable parameters.

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8

Larsen, Mogens Esrom, and Bjarne Sloth Jensen. "Coupled Linear Differential Equations with Real Coefficients." American Mathematical Monthly 96, no. 8 (1989): 727. http://dx.doi.org/10.2307/2324725.

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9

Bobrov, A. A., V. S. Vorob'ev, and B. V. Zelener. "Transfer coefficients in ultracold strongly coupled plasma." Physics of Plasmas 25, no. 3 (2018): 033513. http://dx.doi.org/10.1063/1.5010146.

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10

Schlanges, M., Th Bornath, and D. Kremp. "Rate coefficients in reacting strongly coupled plasmas." Physical Review A 38, no. 4 (1988): 2174–77. http://dx.doi.org/10.1103/physreva.38.2174.

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11

Larsen, Mogens Esrom, and Bjarne Sloth Jensen. "Coupled Linear Differential Equations with Real Coefficients." American Mathematical Monthly 96, no. 8 (1989): 727–31. http://dx.doi.org/10.1080/00029890.1989.11972273.

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12

Huang, Qianwen, Haiyun Liu, and Jiyin Cao. "Investigation of Lumped-Mass Method on Coupled Torsional-longitudinal Vibrations for a Marine Propulsion Shaft with Impact Factors." Journal of Marine Science and Engineering 7, no. 4 (2019): 95. http://dx.doi.org/10.3390/jmse7040095.

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Severe vibrations of the marine propulsion shaft can evidently affect the dynamical response of the propulsion system and degrade the performance of a ship. As the vibration forms couples which interact with each other, a better understanding of the coupled vibrations is essential for dynamic prediction to improve the efficiency and reliability of the marine propulsion system. Thus, an investigation of the lumped-mass method for coupled torsional-longitudinal vibrations of the shaft is proposed. First, a theoretical solution for the coupled ordinary differential equations demonstrates the accu

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13

García-Zúñiga, Roberto Carlos, and Germán Izquierdo. "Coupled dark energy field variation." Modern Physics Letters A 29, no. 33 (2014): 1450175. http://dx.doi.org/10.1142/s0217732314501752.

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The variation of the dark energy field is found under the assumption that the dark energy is parametric and interacts with the cold dark matter. Considering that the variation of the field could not exceed the Planck mass, we obtain bounds on the coupling and adiabatic coefficients. Three parametrizations of the adiabatic coefficients are considered and two coupling terms where the energy flows from dark energy to dark matter, or the other way around.

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14

Chiriţă, S., M. Ciarletta, and B. Straughan. "Structural stability in porous elasticity." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 462, no. 2073 (2006): 2593–605. http://dx.doi.org/10.1098/rspa.2006.1695.

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We consider the linearized system of equations for an elastic body with voids as derived by Cowin & Nunziato. We demonstrate that the solution depends continuously on changes in the coefficients, which couple the equations of elastic deformation and of voids. It is also shown that the solution to the coupled system converges, in an appropriate measure, to the solutions of the uncoupled systems as the coupling coefficients tend to zero.

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15

Gruszczynski, Slawomir, Robert Smolarz, and Krzysztof Wincza. "Differential Bi-Level Microstrip Directional Coupler with Equalized Coupling Coefficients for Directivity Improvement." Electronics 9, no. 4 (2020): 547. http://dx.doi.org/10.3390/electronics9040547.

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In this paper, a bi-level microstrip differential directional coupler has been investigated. It has been shown that the equalization of coupling coefficients can be successfully made with the use of appropriate dielectric stack-up and conductor geometry. The application of additional top dielectric layer can ensure proper equalization of coupling coefficients by lowering the value of capacitive coupling coefficient to the value of the inductive one. The theoretically investigated coupled-line section has been used for the design of a 3-dB differential directional coupler. The measurement resul

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16

Ary, Syahriar, Husin Lubis Ahmad, Syafii Djamal Jusman, Mujadin Anwar, and Juang Pratama Ahmad. "Cladding effects on silica directional couplers." TELKOMNIKA Telecommunication, Computing, Electronics and Control 17, no. 3 (2019): 1142–48. https://doi.org/10.12928/TELKOMNIKA.v17i3.8705.

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Directional couplers are widely used as passive and active optical devices in fibre and integrated optics, and form the basis of components such as switches, modulators and wavelength filters. They consist of two closely-spaced parallel waveguides, whose separation is sufficiently small that power may be transferred between the modes propagating in the two guides through an interaction involving their evanescent fields. In this paper results are presented for a range of near infrared single mode silica directional couplers fabricated by electron beam irradiation. The effects of over cladding l

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17

Sahrawat, Ravinder Kumar, and Sonam Rani. "Fundamental solution of the steady oscillations equations in couple stress micropolar viscoelastic thermoelastic solid." International Journal of Applied Mechanics and Engineering 30, no. 2 (2025): 140–60. https://doi.org/10.59441/ijame/202714.

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In this article, we study case of steady oscillations to solve the system of differential equations by using elementary functions in the theory of microploar couple stress viscoelastic solid . Four waves were discovered: two coupled longitudinal waves and two coupled transverse waves that propagate at various wave speeds. The penetration depth, specific loss, attenuation coefficients, and phase velocity—all of which have been computed numerically and plotted graphically for the LS and GL models—are affected by couple stresses and viscous parameters. Specific cases are created and contrasted wi

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18

Bouwmans, G., B. Segard, D. Dangoisse, and P. Glorieux. "Modeling coupled microchip lasers requires complex coupling coefficients." Journal of the Optical Society of America B 17, no. 5 (2000): 781. http://dx.doi.org/10.1364/josab.17.000781.

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19

Angiuli, Luciana, and Luca Lorenzi. "On coupled systems of PDEs with unbounded coefficients." Dynamics of Partial Differential Equations 17, no. 2 (2020): 129–63. http://dx.doi.org/10.4310/dpde.2020.v17.n2.a3.

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20

ZAKHAROVA, A. S., T. E. VADIVASOVA, and V. S. ANISHCHENKO. "SPECTRAL-CORRELATION ANALYSIS OF COUPLED CHAOTIC SELF-SUSTAINED OSCILLATORS." International Journal of Bifurcation and Chaos 18, no. 09 (2008): 2877–82. http://dx.doi.org/10.1142/s0218127408022147.

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Spectra and autocorrelation functions are studied in a system of two coupled self-sustained chaotic oscillators. We show that spectral and correlation characteristics are connected with partial effective phase diffusion coefficients. The evolution of spectra and diffusion coefficients are considered from the asynchronous regime to the regime of synchronous chaos. We draw the analogy between spectral characteristics of coupled chaotic oscillators and noisy coupled periodic oscillators.

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21

Bhrawy, A. H., M. A. Alghamdi, and Eman S. Alaidarous. "An Efficient Numerical Approach for Solving Nonlinear Coupled Hyperbolic Partial Differential Equations with Nonlocal Conditions." Abstract and Applied Analysis 2014 (2014): 1–14. http://dx.doi.org/10.1155/2014/295936.

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One of the most important advantages of collocation method is the possibility of dealing with nonlinear partial differential equations (PDEs) as well as PDEs with variable coefficients. A numerical solution based on a Jacobi collocation method is extended to solve nonlinear coupled hyperbolic PDEs with variable coefficients subject to initial-boundary nonlocal conservation conditions. This approach, based on Jacobi polynomials and Gauss-Lobatto quadrature integration, reduces solving the nonlinear coupled hyperbolic PDEs with variable coefficients to a system of nonlinear ordinary differential

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22

Nelson, C. C. "Rotordynamic Coefficients for Compressible Flow in Tapered Annular Seals." Journal of Tribology 107, no. 3 (1985): 318–25. http://dx.doi.org/10.1115/1.3261062.

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Derivation of the governing equations for compressible flow in a tapered annular seal is based on Hirs’ turbulent bulk-flow model. Zeroth and first-order perturbation equations are developed by an expansion in the eccentricity ratio. These equations are numerically integrated to obtain the leakage, and the direct and cross-coupled stiffness and damping coefficients. Seal parameters similar to the Space Shuttle Main Engine High Pressure Oxidizer Turbopump are used to demonstrate output from the analysis procedure. The effects of preswirl and seal taper are shown for three different length-to-di

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23

Xu, Chun Dong, Hui Hui Feng, and Feng Feng Wang. "Analysis of the Dynamic Characteristics of the Aerostatic Journal Bearings." Applied Mechanics and Materials 607 (July 2014): 600–603. http://dx.doi.org/10.4028/www.scientific.net/amm.607.600.

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This paper investigates the dynamic characteristics of the aerostatic journal bearing, the rotation center of which is not the center of the journal length. The Finite Difference Method (FDM) and the perturbation method are employed to calculate the stiffness and damping coefficients. Results show that the coupled stiffness and damping coefficients cannot be neglected due to the rotation center being not the center of the journal length. Furthermore, with the increase of the distance between the rotation center and the center of the journal length, the coupled stiffness and damping coefficient

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24

de Carvalho Braga, Denis, Luis Fernando Mello, Carmen Rocşoreanu, and Mihaela Sterpu. "Lyapunov coefficients for non-symmetrically coupled identical dynamical systems. Application to coupled advertising models." Discrete & Continuous Dynamical Systems - B 11, no. 3 (2009): 785–803. http://dx.doi.org/10.3934/dcdsb.2009.11.785.

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25

March, N. H., and J. A. Alonso. "Transport coefficients in the strongly coupled liquid alkali metals." Physics Letters A 377, no. 10-11 (2013): 810–12. http://dx.doi.org/10.1016/j.physleta.2013.01.029.

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26

Han, Lijia, Yehui Huang, and Hui Liu. "Solitons in coupled nonlinear Schrödinger equations with variable coefficients." Communications in Nonlinear Science and Numerical Simulation 19, no. 9 (2014): 3063–73. http://dx.doi.org/10.1016/j.cnsns.2014.01.017.

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27

Zhao, Hongxing, and Zheng-an Yao. "Homogenization of a Coupled System with Periodic Oscillating Coefficients." Mediterranean Journal of Mathematics 11, no. 3 (2014): 1033–46. http://dx.doi.org/10.1007/s00009-014-0405-2.

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28

Laurant, Franck, and Dara W. Childs. "Rotordynamic Evaluation of a Near-Tangential-lnjection Hybrid Bearing." Journal of Tribology 121, no. 4 (1999): 886–91. http://dx.doi.org/10.1115/1.2834151.

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Given the inherent DN and assembly limitations of rolling-element bearings, research is underway to develop hybrid bearings (combining hydrostatic and hydrodynamic effects) for their replacement. Hybrid bearings develop cross-coupled stiffness coefficients due to fluid rotation, leading to predictions of onset speeds of instability and potential limitations in their range of application. Injecting fluid into a bearing recess against rotation, versus the customary radial injection, can reduce the circumferential flow and the cross-coupled-stiffness coefficients, and increase the margin of stabi

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29

Jungnickel, Christian, David Smith, and Stephen Fityus. "Coupled multi-ion electrodiffusion analysis for clay soils." Canadian Geotechnical Journal 41, no. 2 (2004): 287–98. http://dx.doi.org/10.1139/t03-092.

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For a well-engineered compacted clay landfill liner, diffusive transport through the liner is the main mass transport mechanism from the landfill. Therefore, accurate estimates of diffusion coefficients for clay liners are essential for the engineering design of liner systems. A long-standing problem has been the effect of ion pairing on the estimation of diffusion coefficients for multicomponent ionic solutions migrating through clay liners. This paper considers the solution of a fully coupled set of transport equations describing the simultaneous diffusion of several ion species through a cl

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30

Park, Young-Ho, and Suk-Yoon Hong. "Vibrational Energy Flow Analysis of Corrected Flexural Waves in Timoshenko Beam – Part II: Application to Coupled Timoshenko Beams." Shock and Vibration 13, no. 3 (2006): 167–96. http://dx.doi.org/10.1155/2006/562762.

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This paper presents the methodology for the energy flow analysis of coupled Timoshenko beam structures and various numerical applications to verify the developed methodology. To extend the application of the energy flow model for corrected flexural waves in the Timoshenko beam, which is developed in the other companion paper, to coupled structures, the wave transmission analyses of general coupled Timoshenko beam systems are performed. First, power transmission and reflection coefficients for all kinds of propagating waves in the general, coupled Timoshenko beam structures are derived by the w

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31

Escorcia, José M., and Erwin Suazo. "On Blow-Up and Explicit Soliton Solutions for Coupled Variable Coefficient Nonlinear Schrödinger Equations." Mathematics 12, no. 17 (2024): 2694. http://dx.doi.org/10.3390/math12172694.

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This work is concerned with the study of explicit solutions for a generalized coupled nonlinear Schrödinger equations (NLS) system with variable coefficients. Indeed, by employing similarity transformations, we show the existence of rogue wave and dark–bright soliton-like solutions for such a generalized NLS system, provided the coefficients satisfy a Riccati system. As a result of the multiparameter solution of the Riccati system, the nonlinear dynamics of the solution can be controlled. Finite-time singular solutions in the L∞ norm for the generalized coupled NLS system are presented explici

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32

Chiu, Chuang-Hsiung, Wen-Wei Lin, and Chern-Shuh Wang. "Synchronization in a Lattice of Coupled van der Pol Systems." International Journal of Bifurcation and Chaos 08, no. 12 (1998): 2353–73. http://dx.doi.org/10.1142/s0218127498001893.

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We consider a lattice of coupled van der Pol systems with external periodic forces and Dirichlet boundary conditions. Under the assumption of bounded dissipativeness, we prove that the asymptotic synchronization occurs provided that the coupling coefficients are sufficiently large. Furthermore, we demonstrate from numerical simulations that asymptotic synchronization is affected by the coupling coefficients and the size of lattice.

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33

Leaist, Derek G., and Betty Wiens. "Interdiffusion of acids and bases•HCl and NaOH in aqueous solution." Canadian Journal of Chemistry 64, no. 5 (1986): 1007–11. http://dx.doi.org/10.1139/v86-169.

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Stokes magnetically stirred diaphragm cells have been used to measure interdiffusion of hydrochloric acid and sodium hydroxide in aqueous solution at 25 °C. Expressions are developed to estimate ternary diffusion coefficients for these mixtures. The analysis reveals sharp discontinuities between the diffusion properties of HCl-rich and NaOH-rich mixtures. Although the diffusion coefficients are sensitive to concentration, accurate analytic approximations for rates of interdiffusion can be obtained by averaging coefficients along the diffusion path. When HCl and NaOH interdiffuse, proton-couple

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34

Martin, J. Ezequiel, Thad Michael, and Pablo M. Carrica. "Submarine Maneuvers Using Direct Overset Simulation of Appendages and Propeller and Coupled CFD/Potential Flow Propeller Solver." Journal of Ship Research 59, no. 01 (2015): 31–48. http://dx.doi.org/10.5957/jsr.2015.59.1.31.

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This article presents two approaches to simulate maneuvers of a model radio-controlled submarine. In the direct simulation approach, rudders, stern planes, and propellers are gridded and treated as moving objects using dynamic overset technology. The second approach couples the overset computational fluid dynamics (CFD) solver and a potential flow propeller code, with both codes exchanging velocities at the propeller plane and wake, body forces, and propeller forces and moments, whereas rudders and stern planes are still explicitly resolved. It is shown that during the maneuvers, the range of

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35

Feng, Xiaodan, and Zhifei Zhang. "Boundary Control of Coupled Wave Systems with Spatially-Varying Coefficients." Journal of Systems Science and Complexity 35, no. 4 (2022): 1310–29. http://dx.doi.org/10.1007/s11424-021-0214-1.

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36

Wang, Xin, Lijie Yin, and Xiaorui Yue. "Multiple solutions for k-coupled Schrödinger system with variable coefficients." ScienceAsia 45, no. 3 (2019): 279. http://dx.doi.org/10.2306/scienceasia1513-1874.2019.45.279.

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37

Choi, Woo-Young, Jerry C. Chen, and Clifton G. Fonstad. "Evaluation of Coupling Coefficients for Laterally-Coupled Distributed Feedback Lasers." Japanese Journal of Applied Physics 35, Part 1, No. 9A (1996): 4654–59. http://dx.doi.org/10.1143/jjap.35.4654.

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38

Muñoz Grajales, Juan Carlos. "Vector Solitons of a Coupled Schrödinger System with Variable Coefficients." Advances in Mathematical Physics 2016 (2016): 1–19. http://dx.doi.org/10.1155/2016/5787508.

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We show the existence of waveforms of finite-energy (vector solitons) for a coupled nonlinear Schrödinger system with inhomogeneous coefficients. Furthermore, some of these solutions are approximated using a Newton-type iteration, combined with a collocation-spectral strategy to discretize the corresponding soliton equations. Some numerical simulations concerned with analysis of a collision of two oncoming vector solitons of the system are also performed.

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39

Gui-qiong, Xu, and Li Zhi-bin. "Explicit solutions to the coupled KdV equations with variable coefficients." Applied Mathematics and Mechanics 26, no. 1 (2005): 101–7. http://dx.doi.org/10.1007/bf02438371.

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40

Bokhan, Denis, Dmitrii N. Trubnikov, Ajith Perera, and Rodney J. Bartlett. "Explicitly-correlated coupled cluster method for long-range dispersion coefficients." Chemical Physics Letters 672 (March 2017): 133–36. http://dx.doi.org/10.1016/j.cplett.2017.01.049.

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41

Salamon, Marcel, David Fuks, and Helmut Mehrer. "Interdiffusion and Al Self-Diffusion in Iron-Aluminides." Defect and Diffusion Forum 237-240 (April 2005): 444–49. http://dx.doi.org/10.4028/www.scientific.net/ddf.237-240.444.

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We have investigated interdiffusion in iron-aluminium alloys using single-phase interdiffusion couples of FexAl1−x–FeyAl1−y for three combinations of x and y for Al contents between 18 and 49.5 at. % Al. Experimental diffusion profiles were obtained from electron-microprobe analysis of the diffusion zone. Interdiffusion coefficients were deduced via the Sauer-Freise method taking into account volume changes. A temperature interval between 997 and 1447 K was covered in our experiments. Thermodynamic factors were obtained from two theoretical models and judged by an analysis of the Kirkendall ef

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42

Chen, Junchao, and Biao Li. "Three-Dimensional Bright–Dark Soliton, Bright Soliton Pairs, and Rogue Wave of Coupled Nonlinear Schr¨odinger Equation with Time–Space Modulation." Zeitschrift für Naturforschung A 67, no. 8-9 (2012): 483–90. http://dx.doi.org/10.5560/zna.2012-0045.

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We systematically provide a similarity transformation reducing the (3+1)-dimensional inhomogeneous coupled nonlinear Schrodinger (CNLS) equation with variable coefficients and parabolic potential to the (1+1)-dimensional coupled nonlinear Schrodinger equation with constant coefficients. Based on the similarity transformation, we discuss the dynamics of the propagation of the three-dimensional bright-dark soliton, the interaction between two bright solitons, and the feature of the three-dimensional rogue wave with different parameters. The obtained results may raise the possibility of relative

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43

Mouhamadou, Dosso, Traore G. Y. Arouna, and Jean-Claude Koua Brou. "Rank-k perturbation of Hamiltonian Systems with Periodic Coefficients and Applications." European Journal of Pure and Applied Mathematics 12, no. 4 (2019): 1744–70. http://dx.doi.org/10.29020/nybg.ejpam.v12i4.3574.

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Jordan canonical forms of a rank-k perturbation of symplectic matrices and the fundamental solutions of Hamiltonian systems are presented on the basis of work done by C. Mehl et, al.. Small rank-k perturbations of Mathieu systems are analyzed. More precisely, it is shown that the rank-k perturbations of coupled or non-coupled double pendulums and the motion of an ion through a quadrupole analyzer slightly perturb the behavior of their spectra and their stabilities.

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44

Leaist, Derek G. "Coupled transport of iodide ions during interdiffusion of aqueous HCl and NaOH." Canadian Journal of Chemistry 65, no. 10 (1987): 2489–94. http://dx.doi.org/10.1139/v87-415.

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Stokes diaphragm cells have been used to study multicomponent diffusion in aqueous HCl–NaOH–NaI mixtures at 25 °C. The nine quaternary diffusion coefficients for the mixture containing 0.025 mol L−1 of each electrolyte are reported. The measured coefficients are used to analyze coupled transport of iodide ions generated by interdiffusion of aqueous HCl and NaOH. The analysis shows that the gradient in concentration of NaOH is twice as effective at producing flow of iodide ions relative to the HCl gradient, and that the NaI gradient substantially alters the rates of diffusion of HCl and NaOH co

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45

Zhang, Yan, Zhao Zhang, Yang Wang, et al. "Partial-Label and Structure-constrained Deep Coupled Factorization Network." Proceedings of the AAAI Conference on Artificial Intelligence 35, no. 12 (2021): 10948–55. http://dx.doi.org/10.1609/aaai.v35i12.17307.

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In this paper, we technically propose an enriched prior guided framework, called Dual-constrained Deep Semi-Supervised Coupled Factorization Network (DS2CF-Net), for discovering hierarchical coupled data representation. To extract hidden deep features, DS2CF-Net is formulated as a partial-label and geometrical structure-constrained framework. Specifically, DS2CF-Net designs a deep factorization architecture using multilayers of linear transformations, which can coupled update both the basis vectors and new representations in each layer. To enable learned deep representations and coefficients t

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46

Ertas, B., A. Gamal, and J. Vance. "Rotordynamic Force Coefficients of Pocket Damper Seals." Journal of Turbomachinery 128, no. 4 (2006): 725–37. http://dx.doi.org/10.1115/1.2221327.

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This paper presents measured frequency dependent stiffness and damping coefficients for 12-bladed and 8-bladed pocket damper seals (PDS) subdivided into four different seal configurations. Rotating experimental tests are presented for inlet pressures at 69 bar (1000 psi), a frequency excitation range of 20–300 Hz, and rotor speeds up to 20,200 rpm. The testing method used to determine direct and cross-coupled force coefficients was the mechanical impedance method, which required the measurement of external shaker forces, system accelerations, and motion in two orthogonal directions. In additio

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47

SHEEJA, V., and M. SABIR. "EFFECT OF DISSIPATION ON THE HAMILTONIAN CHAOS IN COUPLED OSCILLATOR SYSTEMS." International Journal of Bifurcation and Chaos 12, no. 04 (2002): 859–67. http://dx.doi.org/10.1142/s0218127402004747.

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We study the effect of linear dissipative forces on the chaotic behavior of coupled quartic oscillators with two degrees of freedom. The effect of quadratic Rayleigh dissipation functions, one with diagonal coefficients only and the other with nondiagonal coefficients as well are studied. It is found that the effect of Rayleigh Dissipation function with diagonal coefficients is to suppress chaos in the system and to lead the system to its equilibrium state. However, with a dissipation function with nondiagonal elements, other types of behaviors — including fixed point attractor, periodic attra

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48

Childs, Dara W., Luis E. Rodriguez, Vito Cullotta, Adnan Al-Ghasem, and Matthew Graviss. "Rotordynamic-Coefficients and Static (Equilibrium Loci and Leakage) Characteristics for Short, Laminar-flow Annular Seals." Journal of Tribology 128, no. 2 (2005): 378–87. http://dx.doi.org/10.1115/1.2164468.

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Test results are presented for laminar-flow seals that are representative of buffered-flow oil seals in centrifugal compressors. The seals are short (L∕D≅0.21), with a diameter of 117mm and a clearance-to-radius ratio 0.0007. A smooth seal, a seal with one central groove, and a seal with three grooves were tested. Groove geometries employed are representative of industrial practice for compressors with a groove-depth to clearance ratio on the order of 6. Tests were conducted at 4000, 7000, and 10,000rpm shaft speed with delta pressures across the seals of 21, 45, and 69bars. For all cases, the

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Madsen, O. S., and M. S. Bruno. "A Methodology for the Determination of Drag Coefficients for Ice Floes." Journal of Offshore Mechanics and Arctic Engineering 109, no. 4 (1987): 381–87. http://dx.doi.org/10.1115/1.3257035.

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Governing equations are derived for the response of partially ice-covered continental shelf waters to atmospheric and tidal forcing. The assumptions underlying these equations are discussed, with emphasis on the physical processes represented by the air-ice and ice-water drag coefficients. Combining the equations that separately govern the water and ice floe motions, a coupled ice-water equation is obtained. The coupled equation reduces, under certain simplifying assumptions, to an equation involving only the air and water velocities relative to the ice velocity. This suggests an approximate b

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Li, Jin, Fei Xing, and Zheng You. "An Efficient Image Compressor for Charge Coupled Devices Camera." Scientific World Journal 2014 (2014): 1–20. http://dx.doi.org/10.1155/2014/840762.

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Recently, the discrete wavelet transforms- (DWT-) based compressor, such as JPEG2000 and CCSDS-IDC, is widely seen as the state of the art compression scheme for charge coupled devices (CCD) camera. However, CCD images project on the DWT basis to produce a large number of large amplitude high-frequency coefficients because these images have a large number of complex texture and contour information, which are disadvantage for the later coding. In this paper, we proposed a low-complexity posttransform coupled with compressing sensing (PT-CS) compression approach for remote sensing image. First,

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