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Journal articles on the topic 'Action balance equation'

Author: Grafiati

Published: 4 June 2021

Last updated: 9 February 2022

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1

Snyder, R. L., L. M. Lawson, and R. B. Long. "Inverse Modeling of the Action-Balance Equation. Part I: Source Expansion and Adjoint-Model Equations." Journal of Physical Oceanography 22, no. 12 (1992): 1540–55. http://dx.doi.org/10.1175/1520-0485(1992)022<1540:imotab>2.0.co;2.

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SBITNEV, VALERIY I. "BOHMIAN TRAJECTORIES AND THE PATH INTEGRAL PARADIGM: COMPLEXIFIED LAGRANGIAN MECHANICS." International Journal of Bifurcation and Chaos 19, no. 07 (2009): 2335–46. http://dx.doi.org/10.1142/s0218127409024104.

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David Bohm had shown that the Schrödinger equation, that is a "visiting card" of quantum mechanics, can be decomposed onto two equations for real functions — action and probability density. The first equation is the Hamilton–Jacobi (HJ) equation, a "visiting card" of classical mechanics, is modified by the Bohmian quantum potential. This potential is a nonlinear function of the probability density. And the second is the continuity equation. The latter can be transformed to the entropy balance equation. The Bohmian quantum potential is transformed into two Bohmian quantum correctors. The first

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3

Ding, Yan, and Sam S. Y. Wang. "MODELING OF WAVE-CURRENT INTERACTION USING A MULTIDIRECTIONAL WAVE-ACTION BALANCE EQUATION." Coastal Engineering Proceedings 1, no. 32 (2011): 47. http://dx.doi.org/10.9753/icce.v32.waves.47.

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This study presents an integrated numerical model to simulate wave deformation/transformation in tidal inlets or river mouths with ambient currents (e.g. tidal currents, river inflows) by carefully modeling the effect of wave-current interaction. A multidirectional wave-action balance equation is used to compute random/directional wave processes such as diffraction, refraction, shoaling, wave breaking, as well as wave-current interaction. This wave action model is coupled with a two-dimensional hydrodynamic model, the feedback effect of wave and current can be effectively simulated. This model

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4

Yan, Yixin, Fumin Xu, and Lihua Mao. "A new type numerical model for action balance equation in simulating nearshore waves." Chinese Science Bulletin 46, no. 11 (2001): 963–68. http://dx.doi.org/10.1007/bf02900477.

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5

Hsu, Tai-Wen, Jian-Ming Liau, Shin-Jye Liang, Shan-Hwei Ou, and Yi-Ting Li. "A note on the derivation of wave action balance equation in frequency space." China Ocean Engineering 25, no. 1 (2011): 133–38. http://dx.doi.org/10.1007/s13344-011-0011-z.

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6

Natarov, Andrei, and Peter Müller. "A Dissipation Function for the Internal Wave Radiative Balance Equation." Journal of Atmospheric and Oceanic Technology 22, no. 11 (2005): 1782–96. http://dx.doi.org/10.1175/jtech1788.1.

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Abstract The radiative balance equation describes the evolution of the internal wave action density spectrum n (k) in response to propagation, generation, nonlinear transfer, dissipation, and other processes. Dissipation is assumed to be due primarily to wave breaking, either by shear or gravitational instability. As part of the Internal Wave Action Model (IWAM) modeling effort, a family of dissipation functions is studied that is to account for this dissipation by wave breaking in the radiative balance equation. The dissipation function is of the quasi-linear form Sdiss = −γ (k, Ri−1) n(k), w

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7

Chu, Li-Ming, Jaw-Ren Lin, and Jiann-Lin Chen. "Effects of Surface Roughness and Surface Force on the Thin Film Elastohydrodynamic Lubrication of Circular Contacts." Zeitschrift für Naturforschung A 67, no. 6-7 (2012): 412–18. http://dx.doi.org/10.5560/zna.2012-0035.

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The effects of surface roughness and surface force on thin film elastohydrodynamic lubrication (TFEHL) circular contact problems are analyzed and discussed under constant load condition. The multi-level multi-integration (MLMI) algorithm and the Gauss-Seidel iterative method are used to simultaneously solve the average Reynolds type equation, surface force equations, the load balance equation, the rheology equations, and the elastic deformation equation. The simulation results reveal that the difference between the TFEHL model and the traditional EHL model increase with decreasing film thickne

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8

Toledo, Yaron, Tai-Wen Hsu, and Aron Roland. "Extended time-dependent mild-slope and wave-action equations for wave–bottom and wave–current interactions." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 468, no. 2137 (2011): 184–205. http://dx.doi.org/10.1098/rspa.2011.0377.

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Extended mild-slope (MS) and wave-action equations (WAEs) are derived by taking into account high-order derivatives of the bottom profile and the depth-averaged current that were previously neglected. As a first step for this derivation, a time-dependent MS-type equation in the presence of ambient currents that consists of these high-order components is constructed. This mild-slope equation is used as a basis to form a wave-action balance equation that retains high-order refraction and diffraction terms of varying depths and currents. The derivation accurately accounts for the effects of the c

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9

Hsiang, J. T., and B. L. Hu. "Nonequilibrium steady state in open quantum systems: Influence action, stochastic equation and power balance." Annals of Physics 362 (November 2015): 139–69. http://dx.doi.org/10.1016/j.aop.2015.07.009.

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10

Zheng, Shan Suo, Bin Wang, Liang Zhang, Lei Li, and Wei Wang. "Dynamic Damage Analysis of SRC Frame Structure under Earthquake Action." Key Engineering Materials 385-387 (July 2008): 373–76. http://dx.doi.org/10.4028/www.scientific.net/kem.385-387.373.

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Structures may enter into nonlinear stage under strong earthquake, so precise prediction of nonlinear behavior for building structure in earthquake is important which can assess the earthquake resistance safety of structures accurately. The exact numerical analysis model is required in actual engineering. In this paper the concept of nonlinear dynamic damage is introduced in steel reinforced concrete (SRC) composite structure, based on the theory of continuous damage mechanics. The damage variable is defined and computed by effective plastic strain of material, furthermore, concrete dynamic co

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11

Said, Hamid. "An analytical mechanics approach to the first law of thermodynamics and construction of a variational hierarchy." Theoretical and Applied Mechanics, no. 00 (2020): 11. http://dx.doi.org/10.2298/tam200315011s.

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A simple procedure is presented for the study of the conservation of energy equation with dissipation in continuum mechanics in 1D. This procedure is used to transform this nonlinear evolution-diffusion equation into a hyperbolic PDE; specifically, a second-order quasi-linear wave equation. An immediate implication of this procedure is the formation of a least action principle for the balance of energy with dissipation. The corresponding action functional enables us to establish a complete analytic mechanics for thermomechanical systems: a Lagrangian-Hamiltonian theory, integrals of motion, br

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12

Whillans, I. M., and C. J. van der Veen. "Force Budget (Abstract)." Annals of Glaciology 11 (1988): 212. http://dx.doi.org/10.1017/s026030550000673x.

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An expression for force balance is derived for the general case of gradients in longitudinal and lateral normal stresses and lateral shear stress. In order to consider horizontal glacial mechanics in Newton’s style of actions and reactions, the full stresses are partitioned into lithostatic and resistive, Rij , components. The lithostatic stress is the weight of ice above, and the horizontal gradient in lithostatic force on a vertical column is the familiar driving stress, which accounts for the horizontal effect of body or action forces. The horizontal resistive-stress components describe the

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Whillans, I. M., and C. J. van der Veen. "Force Budget (Abstract)." Annals of Glaciology 11 (1988): 212. http://dx.doi.org/10.3189/s026030550000673x.

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An expression for force balance is derived for the general case of gradients in longitudinal and lateral normal stresses and lateral shear stress. In order to consider horizontal glacial mechanics in Newton’s style of actions and reactions, the full stresses are partitioned into lithostatic and resistive, Rij, components. The lithostatic stress is the weight of ice above, and the horizontal gradient in lithostatic force on a vertical column is the familiar driving stress, which accounts for the horizontal effect of body or action forces. The horizontal resistive-stress components describe the

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14

Hughes, David W., and Fausto Cattaneo. "Force balance in convectively driven dynamos with no inertia." Journal of Fluid Mechanics 879 (October 1, 2019): 793–807. http://dx.doi.org/10.1017/jfm.2019.709.

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We study dynamo action in rotating, plane layer Boussinesq convection in the absence of inertia. This allows a decomposition of the velocity into a thermal part driven by buoyancy, and a magnetic part driven by the Lorentz force. We have identified three families of solutions, defined in terms of what is the dominant contribution to the velocity. In weak field dynamos the dominant contribution is the thermal component, in super strong field dynamos the dominant contribution is magnetic and in strong field dynamos the two components are comparable. For each of these solutions we investigate the

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15

Drivotin, Oleg I. "Оn momentum flow density of the gravitational field". Vestnik of Saint Petersburg University. Applied Mathematics. Computer Science. Control Processes 17, № 2 (2021): 137–47. http://dx.doi.org/10.21638/11701/spbu10.2021.204.

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Momentum is considered on the basis of the approach widely used in the calculus of variations and in the optimal control theory, where variation of a cost functional is investigated. In physical theory, it is the action functional. Action variation under Lie dragging can be expressed as a surface integral of some differential form. The momentum density flow is defined using this form. In this work, the momentum balance equation is obtained. This equation shows that the momentum field transforms into a momentum of a mass. Examples showing the momentum flow structure for a mass distribution repr

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Akbar, Ahmad Radikal, Mokhtar Awang, and Dyah Sawitri. "Energy Balance Assessment of Magnetic Materials as Theoretical Hint for Formulation of Interoperable Magnetic-Mechanical Equation." Advanced Materials Research 1024 (August 2014): 376–80. http://dx.doi.org/10.4028/www.scientific.net/amr.1024.376.

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Theoretical review on magnetic energy conception is still crucial since the recent discourse emerged in various conceptual speculations that lead into inconsistency in mathematical expression. The coming study should direct its formula into an interoperable equation which enables a magnetic energy to be observed as a mechanical work. The forthcoming expression of magnetic energy should represent operation of mechanical work definitely, considering the usage of Permanent Magnet (PM) in numerous mechanical devices. This interoperable magnetic-mechanical equation would be formulated from energy b

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17

Zhang, Yun Peng, Ming Liang Zhang, Zi Ning Hao, Yuan Yuan Xu, and Yang Qiao. "Numerical Simulation of Wave Transformation Using Spectral Wave Action Model." Applied Mechanics and Materials 638-640 (September 2014): 1261–65. http://dx.doi.org/10.4028/www.scientific.net/amm.638-640.1261.

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This paper presents a spectral wave action model to simulate random wave deformation and transformation. The wave model is based on the wave action balance equation and can simulate wave fields by accounting for wave breaking, shoaling, refraction, diffraction and wind effect in coastal waters. It is a finite-difference, phase averaged model for the steady-state wave spectral transformation. The wave model is applied to verify different experimental cases and real life case of considering the several factor effects. The calculated results agree with the experimental and field data. The results

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18

Audusse, Emmanuel, Léa Boittin, and Martin Parisot. "Asymptotic derivation and simulations of a non-local Exner model in large viscosity regime." ESAIM: Mathematical Modelling and Numerical Analysis 55, no. 4 (2021): 1635–68. http://dx.doi.org/10.1051/m2an/2021031.

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The present paper deals with the modeling and numerical approximation of bed load transport under the action of water. A new shallow water type model is derived from the stratified two-fluid Navier–Stokes equations. Its novelty lies in the magnitude of a viscosity term that leads to a momentum equation of elliptic type. The full model, sediment and water, verifies a dissipative energy balance for smooth solutions. The numerical resolution of the sediment layer is not trivial since the viscosity introduces a non-local term in the model. Adding a transport threshold makes the resolution even mor

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19

Sasaki, Yoshi K. "Entropic Balance Theory and Variational Field Lagrangian Formalism: Tornadogenesis." Journal of the Atmospheric Sciences 71, no. 6 (2014): 2104–13. http://dx.doi.org/10.1175/jas-d-13-0211.1.

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Abstract The entropic balance theory has been applied with outstanding results to explain many important aspects of tornadic phenomena. The theory was originally developed in variational (probabilistic) field Lagrangian formalism, or in short, variational formalism, with Lagrangian density and action appropriate for supercell-storm and tornadic phenomena. The variational formalism is broadly used in in modern physics, not only in classical mechanics, with Lagrangian density and action designed for each physical problem properly. The Clebsch transformation (equation) was derived in the classica

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20

Idris, Saleha, Mohd Rushdan Mohd Jailani, Muhammad Khairi Mahyuddin, and Othman Ab. Rahman. "Psychology of Da’wah Impact on Balanced Personality Among Private Young Adult Higher University in Malaysia." ‘Abqari Journal 25, no. 1 (2021): 49–62. http://dx.doi.org/10.33102/abqari.vol24no2.252.

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Youth adulthood today, should be taught to have a balanced personality to succeed both in the world and hereafter. Psychology of da'wah and balance personality are dynamic internal systems which form an individual's pattern of action, thought and feeling. Youth adulthood should practice moderate Islamic lifestyle, so that the knowledge gained is competent for the purpose to achieve the pleasure of Allah. Thus, the objective of this study is to examine the impact psychology da’wah on balanced personality. The research hypothesis is tested with a sample of young adulthood in private universities

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21

Anandhan, M., Niket S. Kaisare, K. Kannan, and Bijo Varkey. "POPULATION BALANCE MODEL FOR VULCANIZATION OF NATURAL RUBBER WITH DELAYED-ACTION ACCELERATOR AND PREVULCANIZATION INHIBITOR." Rubber Chemistry and Technology 85, no. 2 (2012): 219–43. http://dx.doi.org/10.5254/rct.12.89971.

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Abstract Our objective is to extend the population balance equation model for vulcanization of natural rubber in the presence of N-t-butylbenzothiazole-2-sulfenamide (TBBS) as an accelerator and N-(cyclohexylthio)phthalimide (CTP) as a retarder. The experiments performed by using the oscillating disk rheometer are used to track the evolution of crosslink density in natural rubber. The model quantitatively predicts the trends observed in the vulcanization mixture at various temperatures, including capturing the effects of changing the initial amounts of TBBS and CTP. This model is able to captu

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22

Xia, Yu, Ze Wu, Zhemin Kang, and Chuangdi Li. "Stochastic Response Characteristic and Equivalent Damping of Weak Nonlinear Energy Dissipation System under Biaxial Earthquake Action." Mathematical Problems in Engineering 2017 (2017): 1–10. http://dx.doi.org/10.1155/2017/7384940.

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The random response characteristic of weak nonlinear structure under biaxial earthquake excitation is investigated. The structure has a SDOF (single degree of freedom) with supporting braces and viscoelastic dampers. First, it adopts integral constitutive relation and establishes a differential and integral equations of motion. Then, according to the principle of energy balance, the equation is linearized. Finally, based on the stochastic averaging method, the general analytical solution of the variance of the displacement and velocity response and the equivalent damping is deduced and derived

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23

Zhang, Ji’ang, Ping Wang, Yushu Liu, and Ze Cheng. "Variable-Order Equivalent Circuit Modeling and State of Charge Estimation of Lithium-Ion Battery Based on Electrochemical Impedance Spectroscopy." Energies 14, no. 3 (2021): 769. http://dx.doi.org/10.3390/en14030769.

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In the battery management system, it is important to accurately and efficiently estimate the state of charge (SOC) of lithium-ion batteries, which generally requires the establishment of a equivalent circuit model of the battery, whose accuracy and rationality play an important role in accurately estimating the state of lithium-ion batteries. The traditional single order equivalent circuit models do not take into account the changes of impedance spectrum under the action of multiple factors, nor do they take into account the balance of practicality and complexity of the model, resulting the lo

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Yang, Xue Chun, and Zheng Hao Liu. "Running Speed Analysis of Car on Dual Strop Ropeway with Headwind Load." Advanced Materials Research 562-564 (August 2012): 1522–25. http://dx.doi.org/10.4028/www.scientific.net/amr.562-564.1522.

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This paper indicates the influence on the operation of the strop ropeway under the action of headwind, and establishes a curve equation of strop ropeway with wind load in accordance with static balance theory. It makes a dynamic analysis on bi-cable tackle under the action of headwind load, and determines the acceleration of the tackle under wind load. Meanwhile, it analyzes the whole course of the bi-cable strop ropeway, the influence of the wind load on the running speed and result of the strop tackle under the headwind. The paper summarizes the calculation process for the speed of bi-cable

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Chen, Hai Bin, and Nan Ge. "Isolation Effect Research about RFPS Seismic Isolating System on Bridges." Advanced Materials Research 662 (February 2013): 683–87. http://dx.doi.org/10.4028/www.scientific.net/amr.662.683.

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A balance equation was established for RFPS which in the general position, it derived from Alembert's principle and Static theory. Then make a bridge structure with RFPS bearings as an example calculated the dynamic response equation of the isolation system that under the action of earthquake. The solving program which based on MATLAB program was presented with Newmark–β time-history analysis method. Analysis and calculation results show that the isolation effect of RFPS bearings was very evident. Make an appropriate selection on slide radius and the rolling friction coefficient values can mak

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Li, Xiao Yong, Jing Wang, Mei Ling Sun, Rui Ling Ma, and Jun Min Meng. "Internal Wave Parameter Inversion at Malin Shelf Edge Based on the Nonlinear Schrödinger Equation." Applied Mechanics and Materials 441 (December 2013): 388–92. http://dx.doi.org/10.4028/www.scientific.net/amm.441.388.

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We established a deep-sea internal wave detection model based on the nonlinear Schrödinger (NLS) equation and Synthetic Aperture Radar (SAR) images, and applied the model to the Malin Shelf edge, located at UK Continental Shelf, west of Scotland, to retrieve internal wave parameters. We selected the SAR images of internal waves at Malin Shelf edge, combined NLS equation with the action spectrum balance equation and Bragg scattering model, retrieved the amplitudes and phase velocities of the internal waves at Malin Shelf edge, and compared these data with those retrieved by the model based on

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27

Smit, P. B., and T. T. Janssen. "The Evolution of Inhomogeneous Wave Statistics through a Variable Medium." Journal of Physical Oceanography 43, no. 8 (2013): 1741–58. http://dx.doi.org/10.1175/jpo-d-13-046.1.

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Abstract The interaction of ocean waves with variable currents and topography in coastal areas can result in inhomogeneous statistics because of coherent interferences, which affect wave-driven circulation and transport processes. Stochastic wave models, invariably based on some form of the radiative transfer equation (or action balance), do not account for these effects. The present work develops and discusses a generalization of the radiative transfer equation that includes the effects of coherent interferences on wave statistics. Using multiple scales, the study approximates the transport e

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Marcu, Gheorghe. "New Perspectives in Developing the Balance Scorecard Concept." Scientific Bulletin 25, no. 1 (2020): 33–40. http://dx.doi.org/10.2478/bsaft-2020-0005.

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AbstractThe main role for researchers and organizational theorists is to translate their statements and principles into practical tools applicable in the management activity. Sometimes, these tools used in managerial practice are not rigorously developed and applied, some eventually contradicting the initial assumptions. However, most of the times, the concepts go through a natural cycle of developing, harmonizing and refining their own statements and demonstrations, with the support of the authors and / or other researchers. Also, the manifestation in management of any action that claims the

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Xiong, Tongqiang, Jianlin Li, Lehua Wang, Huafeng Deng, and Xiaoliang Xu. "Landslide Accumulation Ice-Snow Melting for Thermo-Hydromechanical Coupling and Numerical Simulation." Advances in Civil Engineering 2021 (March 19, 2021): 1–19. http://dx.doi.org/10.1155/2021/6664213.

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In this paper, we discussed the phase change coupling algorithm of accumulation bank slope under the action of ice-snow melting. We described the effect of temperature gradient on the water migration of soil. We simplified the stress balance, continuity, and energy equation in the coupled model. We discussed the variation law of temperature, seepage, and stress (deformation) field under different conditions of ice-snow melting on the bank slope of the accumulation body. Based on the three-field coupling energy balance equation of ice-snow melting with phase change, the simplified algorithm of

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Dubos, Thomas, and Fabrice Voitus. "A Semihydrostatic Theory of Gravity-Dominated Compressible Flow." Journal of the Atmospheric Sciences 71, no. 12 (2014): 4621–38. http://dx.doi.org/10.1175/jas-d-14-0080.1.

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Abstract From Hamilton’s least-action principle, compressible equations of motion with density diagnosed from potential temperature through hydrostatic balance are derived. Slaving density to potential temperature suppresses the degrees of freedom supporting the propagation of acoustic waves and results in a soundproof system. The linear normal modes and dispersion relationship for an isothermal state of rest on f and β planes are accurate from hydrostatic to nonhydrostatic scales, except for deep internal gravity waves. Specifically, the Lamb wave and long Rossby waves are not distorted, unli

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31

Duan, Chenghua, Chun Liu, Cheng Wang, and Xingye Yue. "Numerical complete solution for random genetic drift by energetic variational approach." ESAIM: Mathematical Modelling and Numerical Analysis 53, no. 2 (2019): 615–34. http://dx.doi.org/10.1051/m2an/2018058.

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In this paper, we focus on numerical solutions for random genetic drift problem, which is governed by a degenerated convection-dominated parabolic equation. Due to the fixation phenomenon of genes, Dirac delta singularities will develop at boundary points as time evolves. Based on an energetic variational approach (EnVarA), a balance between the maximal dissipation principle (MDP) and least action principle (LAP), we obtain the trajectory equation. In turn, a numerical scheme is proposed using a convex splitting technique, with the unique solvability (on a convex set) and the energy decay prop

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Kuroiwa, Masamitsu, Ahmed Khaled Seif, Yuhei Matsubara, Yasushi Ichimura, Hajime Mase, and Mazen Abualtayef. "A COASTAL AREA MODEL CONSIDERING WAVE-CURRENT INTERACTION AND ITS APPLICATION TO WIDE-CRESTED SUBMERGED BREAKWATER." Coastal Engineering Proceedings 1, no. 33 (2012): 12. http://dx.doi.org/10.9753/icce.v33.sediment.12.

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This study is concerned with development of a 3D morphodynamic predictive model for considering wave-current interaction by using wave action balance equation. The developed model was applied to model tests associated with a detached breakwater and wide-crested submerged breakwaters, and the influences of strong currents around the structures into wave height distribution and bathymetry change were investigated. Furthermore, the morphodynamics around the artificial reefs in the Uradome Beach, Tottori, Japan, was computed. From the computed results, a large scour hole due to strong rip-currents

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Elfering, Achim, Simone Grebner, and Coralie Boillat. "Busy at Work and Absent-Minded at Home." Swiss Journal of Psychology 72, no. 4 (2013): 219–28. http://dx.doi.org/10.1024/1421-0185/a000114.

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This study investigates whether cognitive failures mediate the potential influence of work demands and conscientiousness on body balance problems and domestic near-falls at home after work. The participants were 109 employees (55% female). We used the Workplace Cognitive Failure Scale (WCFS) to measure the frequency of failure in memory function, failure in attention regulation, and failure in action execution. Performance constraints, time pressure, and concentration demands were assessed by the Instrument for Stress-Oriented Task Analysis (ISTA). In a structural equation model, work-related

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Ou, Ren Xia, Hong Bin Chen, Jie Bao, and Jie Wu. "The Damage Analysis of Composite Laminate under the Action of Low Speed Impact and Static Pressure Mark." Advanced Materials Research 941-944 (June 2014): 1437–40. http://dx.doi.org/10.4028/www.scientific.net/amr.941-944.1437.

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Based on energy balance equation, the relationship between the biggest impact contact force with the pit depth in the process of impact was derived by the relationship between impact energy and indentation depth, T700S/5228 and T300/5222, two different toughness of carbon/epoxy resin composite material, are chose. The corresponding relationship between impact energy (static pressure mark force) and indentation depth was got by the contrast analysis on the low speed impact test and the static pressure mark test, and showed the similar trend with static pressure mark test of static force and ind

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Chen, Qin, Ling Zhu, Fengyan Shi, and Steve Brandt. "BOUSSINESQ MODELING OF COMBINED STORM SURGE AND WAVES OVER WETLANDS FORCED BY WIND." Coastal Engineering Proceedings, no. 36v (December 28, 2020): 6. http://dx.doi.org/10.9753/icce.v36v.waves.6.

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Coastal wetlands protect the shoreline and infrastructure by attenuating wind waves and reducing storm surge. It is of importance to accurately quantify the flood protection provided by vegetation. Existing numerical models for hurricane waves and storm surge are based on the phase-averaged wave action balance equation and the nonlinear shallow water equations, respectively, with the wind forcing and vegetal drag as the free surface and bottom boundary conditions. To consider the interaction of waves and surge, the phase-averaged short wave and long wave (storm surge) models can be coupled in

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Annila, Arto, and Stanley Salthe. "Threads of Time." ISRN Thermodynamics 2012 (June 28, 2012): 1–7. http://dx.doi.org/10.5402/2012/850957.

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The concept of time’s arrow is examined using the principle of least action as given in its original non-Abelian form. When every entity of nature is considered to be composed of quantized actions, such an entity will change, either by absorbing quanta from surrounding actions or by emitting quanta to the surrounding actions. In natural processes, quanta disperse from high-energy density actions to low-energy density actions in quest of consuming free energy in least time. We propose that the flux of quanta embodies the flow of time, and therefore the irreversible consumption of free energy cr

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Sankar, Jayendira P., G. Yoganandham, R. Kalaichelvi, Jeena Ann John, and Badella Uday Kumar. "Human Resource Digital Transformation of IT Sector in India." Webology 18, no. 1 (2021): 219–32. http://dx.doi.org/10.14704/web/v18i1/web18085.

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Information technology sector plays a vital role in the economy of the country. So the present study focused on the information technology sector of India to determine the effectiveness of human resource digital transformation. The administrative activities include personal record, updating details and benefits information, employee experience comprise cultural environment, technological environment and physical environment, and work-family balance encompass personal relationship, physical & mental health and overall happiness as independent variables. A total of 336 sample data collected

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Shevchenko, A. M., G. N. Nachinkina, and M. V. Gorodnova. "Development of the Energy Method and Study of Algorithms for Predicting the Takeoff Trajectory of Aircraft." Mekhatronika, Avtomatizatsiya, Upravlenie 21, no. 6 (2020): 366–74. http://dx.doi.org/10.17587/mau.21.366-374.

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The article is devoted to the development and research of the method of predicting the events on the trajectory of takeoff, climb and overcome highrise obstacles on the course. The prediction method is based on the energy approach to flight control, created by us in previous works. The mathematical formulation of the method is the energy balance equation describing the mutual influence of all acting forces in the aircraft-engine-environment" system. In this article, the equation is extended to ground modes of movement along the runway. For this, a term is added to the equation that takes into

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Bogdanovich, Valery I., and Mikhail G. Giorbelidze. "Mathematical Model of Powder Material Particles Heating in Thermal Spraying." Key Engineering Materials 769 (April 2018): 336–45. http://dx.doi.org/10.4028/www.scientific.net/kem.769.336.

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This paper discusses the mathematical model of powder material particles heating in the gas flow when applying plasma gas and thermal coatings. It has been assumed that while moving in the plasma, the particle is heated by convective heat transfer and radiative heat transfer. To ensure accuracy and validity of calculation, two characteristic regions have been outlined: Core, where the temperature, density, and viscosity of plasma, as well as the other parameters are assumed as constant; and the region from the core to the coated surface (substrate), where these parameters are the functions of

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Krishnappan, Bommanna G. "Recent advances in basic and applied research in cohesive sediment transport in aquatic systems." Canadian Journal of Civil Engineering 34, no. 6 (2007): 731–43. http://dx.doi.org/10.1139/l06-043.

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An overview of cohesive sediment transport processes is given in this paper, and a mass-balance equation that is commonly used to treat cohesive sediment transport is reviewed. The equation highlights transport parameters and processes that are important for modelling the transport of cohesive sediment. The flocculation mechanism that distinguishes cohesive sediment from its noncohesive counterpart is elaborated using a laboratory study that was carried out in a rotating circular flume using sediments from Hay River, Northwest Territories, Canada. A mathematical model of flocculation suitable

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Захаров, А. В., С. В. Пасечник та Д. В. Шмелева. "Сдвиговой режим формирования градиента температуры в тонком нематическом канале". Физика твердого тела 61, № 4 (2019): 779. http://dx.doi.org/10.21883/ftt.2019.04.47430.305.

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AbstractIt has been shown by means of numerical methods, in the framework of the classical Ericksen-Leslie theory, together with accounting the entropy balance equation, how a temperature gradient, in the initially uniformly heated a hybrid-oriented liquid crystal (HOLC) channel, may set up under action of a shear stress (SS). The cases of complete and partial thermal insulation of one of the boundary surfaces of the HOLC are analyzed under the condition that a constant temperature is kept on the rest boundaries. It also has been shown how to heat up the planarly oriented upper boundary of the

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Gao, Ying, Qun Shao, Binzhou Yan, and Shuxia Guo. "Variable Step Size Solution of Standard Parabolic Equation in Complex Environment." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 37, no. 5 (2019): 878–85. http://dx.doi.org/10.1051/jnwpu/20193750878.

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Aiming at the problem that it is difficult to balance the accuracy and velocity of the fixed-step solution of standard parabolic equation in the study of radio wave propagation in a wide range of complex environments, a variable-step solution method of standard parabolic equation is proposed. Firstly, after deducing the relationship between the error of SSFT solution and step size, frequency and other factors; And the basic selection range of step size for SPE variable step size solution is given. Secondly, the action mechanism of different environmental factors and the requirement of changing

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Abd Al-Samieh, Mohamed. "Demarcation boundary between region dominated by elastohydrodynamic lubrication and that by the surface force action for different elliptical ratios." Industrial Lubrication and Tribology 69, no. 2 (2017): 215–24. http://dx.doi.org/10.1108/ilt-01-2016-0003.

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Purpose This paper aims to investigate the effect of changing speed of the entraining motion on the formation of ultra-thin lubricating films under different elliptical ratios. The ellipticity parameter (K) varied from 1 (a ball-on-plate configuration) to 6 (a configuration approaching line contact). The influence of the ellipticity parameters, the dimensionless speed and the effects of surface forces on the formation of the minimum film thickness has been demonstrated. The demarcation boundary between region dominated by elastohydrodynamic lubrication (EHL) and that by the surface force actio

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Ambrosone, Luigi, Germano Guerra, Mariapia Cinelli, et al. "Corneal Epithelial Wound Healing Promoted by Verbascoside-Based Liposomal Eyedrops." BioMed Research International 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/471642.

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Different liposomal formulations were prepared to identify those capable of forming eyedrops for corneal diseases. Liposomes with neutral or slightly positive surface charge interact very well with the cornea. Then these formulations were loaded with verbascoside to heal a burn of corneal epithelium induced by alkali. The cornea surface affected involved in wound was monitored as a function of time. Experimental results were modeled by balance equation between the rate of healing, due to the flow of phenylpropanoid, and growth of the wound. The results indicate a latency time of only three hou

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Akrish, Gal, Pieter Smit, Marcel Zijlema, and Ad Reniers. "MODELLING WAVE INTERFERENCE PATTERNS USING THE SWAN MODEL." Coastal Engineering Proceedings, no. 36 (December 30, 2018): 42. http://dx.doi.org/10.9753/icce.v36.waves.42.

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This study presents an efficient approach of resolving wave interference patterns in spectral wave models (e.g., SWAN). Such interference patterns, which frequently occur in coastal waters (e.g., near headlands, harbor entrances and coastal inlets), may lead to rapid changes in wave statistics, and thus, can affect wave-driven flow and transport processes. Therefore, prediction of wave conditions for coastal applications should account for these effects. Presently, operational wave models compute the mean wave properties by solving the action balance equation, which describes the transport of

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Zhang, Zhongkui, Feng Gao, Yan Li, and Han Zhang. "Dynamic and Stability Analysis of the Machine Hydrostatic Slide with Magnetorheological Damper." Shock and Vibration 2019 (August 1, 2019): 1–11. http://dx.doi.org/10.1155/2019/3605830.

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Tangential dynamic behaviors of the machine hydrostatic slide with a magnetorheological (MR) fluid damper are studied, and the effect of the MR damper to control the vibration of the hydrostatic slide is discussed. The dynamic model of the hydrostatic slide with the MR damper is established, and the tangential vibration equation of linear and nonlinear is derived. The multidimensional incremental harmonic balance method (MIHBM) with discrete Fourier transform (DFT) is derived by which the nonlinear response and stability of the system are studied. The resonance response of the Duffing equation

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Abd Alsamieh, M. F. "Non-Newtonian Film Thickness Formation in Ultra-thin Film." International Journal of Automotive and Mechanical Engineering 16, no. 1 (2019): 6230–44. http://dx.doi.org/10.15282/ijame.16.1.2019.11.0473.

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This paper aims to show the characteristics of ultra-thin films for non-Newtonian fluid using Ree-Eyring model where intermolecular forces of solvation and Van der Waal's are considered in addition to the hydrodynamic action to fulfill an identified need for such a conjunction. In this case, the film thickness and pressure distribution are obtained by simultaneous solution of the modified Reynolds’ equation incorporating the effect of non-Newtonian fluid, film thickness equation including elastic deformation caused by all contributing pressures and the load balance equation using Newton-Raphso

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Vasyl, Olshanskiy, and Olshanskiy Stanislav. "ON THE POSSIBILITY OF STAGNATION OF FREE OSCILLATIONS OF A NONLINEARLY ELASTIC OSCILLATOR WITH A LINEAR VISCOUS RESISTANCE." Vibrations in engineering and technology, no. 4(95) (December 20, 2019): 38–46. http://dx.doi.org/10.37128/2306-8744-2019-4-5.

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The free oscillations of an oscillator with a power-nonlinear elasticity characteristic under the action of linear viscous resistance are considered. Using the energy balance method, which is widespread in mechanics, the calculation of the amplitudes of free damped oscillations is reduced to calculating the roots of an algebraic equation, which has an exact analytical solution only with linear elasticity of the oscillator. In the case of an arbitrary positive indicator of nonlinear elasticity, a numerical solution of the equation is required. For this, the Newton's iterative method was used in

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Olshanskiy, Vasyl, Maksym Slipchenko, Oleksandr Spolnik, and Mykhailo Zamrii. "FREE OSCILLATOR OSCILLATIONS IN THE PRESENCE OF QUADRATIC VISCOUS RESISTANCE AND DRY FRICTION." Vibrations in engineering and technology, no. 2(97) (August 27, 2020): 33–40. http://dx.doi.org/10.37128/2306-8744-2020-2-4.

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The article is devoted to the derivation of formulas for calculating the ranges of free damped oscillations of a double nonlinear oscillator. Using the Lambert function and the first integral of the nonlinear differential equation of motion, formulas are derived for calculating the ranges of free damped oscillations of a linearly elastic oscillator under the combined action of the forces of quadratic viscous resistance and Coulomb dry friction. The calculations involve a table of the specified special function of the negative argument. It is shown that the presence of viscous resistance reduce

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Ruyer-Quil, C., S. Chakraborty, and B. S. Dandapat. "Wavy regime of a power-law film flow." Journal of Fluid Mechanics 692 (January 5, 2012): 220–56. http://dx.doi.org/10.1017/jfm.2011.508.

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AbstractWe consider a power-law fluid flowing down an inclined plane under the action of gravity. The divergence of the viscosity at zero strain rate is taken care of by introducing a Newtonian plateau at small strain rate. Two-equation models are formulated within the framework of lubrication theory in terms of the exact mass balance and an averaged momentum equation, which form a set of evolution equations for the film thickness $h$, a local velocity amplitude or the flow rate $q$. The models account for the streamwise diffusion of momentum. Comparisons with Orr–Sommerfeld stability analysis

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