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1441
Growth-rate distributions of gut microbiota time series
Published 2025-01-01“…Here a neutral model based on a stochastic differential equation with demographic noise, which presents a closed form for these distributions, is used to describe the population dynamics of microbiota. …”
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1442
Experimental Investigation and Analysis of Dynamic Buckling of Drill String in Horizontal Well
Published 2017-01-01“…This paper focuses on the rotational drill string in horizontal well. The differential equation of the dynamic buckling is established considering some various factors, including friction, the drill string-borehole interaction, and rotation, and the equations of the critical load of the sinusoidal buckling and the spiral buckling are derived. …”
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1443
Analysis of Nonlinear Structural Dynamics and Resonance in Trees
Published 2012-01-01“…Many of such nonlinear differential equations are complicated to solve. Therefore, this paper focuses on an accurate and simple solution, Differential Transformation Method (DTM), to solve the derived equation. …”
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1444
An innovative analytical method utilizing aboodh residual power series for solving the time-fractional newell-whitehead-segel equation
Published 2024-06-01“…One of the key advantages of our approach is that the Aboodh transformation operator converts the fractional differential equation into an algebraic equation, thereby significantly reducing the computational effort required in the subsequent algebraic steps. …”
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1445
Network-level reproduction number and extinction threshold for vector-borne diseases
Published 2014-12-01“…Relationships between basic reproduction numbers of two deterministic network-based ordinary differential equation vector-host models, and extinction thresholds of corresponding stochastic continuous-time Markov chain models are derived under some assumptions. …”
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1446
Dynamics of evolutionary competition between budding and lytic viral release strategies
Published 2014-05-01“…In this paper, we consider the evolutionary competition between budding and lytic viral release strategies, using a delay differential equation model with distributed delay. When antibody is not established, the dynamics of competition depends on the respective basic reproductive ratios of the two viruses. …”
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1447
A mathematical model of weight change with adaptation
Published 2009-08-01“…Key factors are an adaptation of resting metabolic rate, non-exercise activity thermogenesis and dietary induced thermogenesis. We develop a differential equation model based on the first law of thermodynamics that incorporates all three adjustments along with natural age related reduction of the resting metabolic rate. …”
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1448
HPM-Based Dynamic Sparse Grid Approach for Perona-Malik Equation
Published 2014-01-01“…The Perona-Malik equation is a famous image edge-preserved denoising model, which is represented as a nonlinear 2-dimension partial differential equation. Based on the homotopy perturbation method (HPM) and the multiscale interpolation theory, a dynamic sparse grid method for Perona-Malik was constructed in this paper. …”
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1449
Analysis and Study on Bending Vibration Frequency of New Corrugated Steel Web Composite Box Girder
Published 2021-01-01“…In order to accurately analyze the bending vibration frequency of the new composite box girder, the effects of web folding effect, shear lag, and shear deformation are comprehensively considered in this paper, and the elastic control differential equation and natural boundary conditions of the composite box girder are established by using the Hamilton principle. …”
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1450
A Strength Design Method of Cemented Backfill with a High Aspect Ratio
Published 2020-01-01“…Then, by the combination of the minor principal stress trajectory method and the horizontal slice method, an ordinary differential equation of stresses was established and then solved numerically. …”
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1451
A weak invariance principle and asymptotic stability for evolution equations with bounded generators
Published 1995-01-01“…The theory is illustrated with an example of an integro-differential equation of interest in the theory of chemical processes. …”
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1452
POSFUST RELIABILITY OF A NON-REPAIRABLE MULTI-STATE SYSTEM WITH POSFUST FAILURE RATE ESTIMATION
Published 2020-06-01“…In this approach, Markov process (multi-state system) is used for getting the governing differential equation for transition from one state to another state. …”
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1453
A stochastic model for water-vegetation systems and the effect of decreasing precipitation on semi-arid environments
Published 2018-09-01“…The model, a stochastic differential equation approximation derived from a Markov jump process, is used to generate extensive simulations that suggest a relationship between precipitation reduction and the desertification process, which might take several years in some instances.…”
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1454
Aggregation and environmental transmission in chronic wasting disease
Published 2014-11-01“…Wedevelop a strategic differential equation model for ChronicWasting Disease and include direct and indirect transmission aswell as host aggregation into our model. …”
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1455
Tensile Failure Mechanism of Antiseepage System for Slope with Solid Waste Underground Landfill
Published 2018-01-01“…The analytical solutions of the tensile force and displacement of the antiseepage membrane was calculated through differential equation of equilibrium. With general slag and ardealite slag as the research objects, the major parameters affecting the internal tensile force of the antiseepage membrane were analyzed and studied by the combination of numerical and theoretical methods. …”
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1456
Sandwich-Type Results and Existence Results of Analytic Functions Associated with the Fractional <i>q</i>-Calculus Operator
Published 2024-12-01“…Furthermore, we employ the existence of univalent solutions to a <i>q</i>-differential equation connected with a fractional <i>q</i>-integral operator of fractional order. …”
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1457
Global dynamics of a simple model for wild and sterile mosquitoes
Published 2024-09-01“…Then, the global behavior of the solution of the two-dimensional ordinary differential equation system is classified in a two-parameter plane represented by the natural death rate of mosquitoes and the sterile mosquito release rate. …”
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1458
Mathematical model of penetration of cylindrical electromagnetic fields with axial symmetry through the plane screen from permalloy
Published 2020-06-01“…The boundary-value problem is based on the use of differential Maxwell equations and complementary nonlinear differential equation for the field of magnetization, characterizing the permalloy. …”
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1459
Global dynamics of a vector-host epidemic model with age of infection
Published 2017-09-01“…In this paper, a partial differential equation (PDE) model is proposed to explore the transmission dynamics of vector-borne diseases. …”
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1460
Application of Laplace Transform For Solving Population Growth and Decay Models.
Published 2024“…Laplace can be used to convert complex differential equations to a simpler form having polynomials, convert derivatives into multiple domain variables, and then convert the polynomials back to the differential equation using the Inverse Laplace transform, telecommunication field to send signals to both sides of the medium. …”
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