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2661
Understanding biofilm--phage interactions in cystic fibrosis patients using mathematical frameworks
Published 2025-01-01“…To evaluate the effectiveness of phage therapy against biofilm bacteria, we create a phage-biofilm model with ordinary differential equations and a stochastic model. We considered three possible cases for the stability of disease-free equilibrium; by model simulations and parameter alterations in both models, we investigated the effect of bacteria–phage interactions alongside biofilm bacteria cell detachment from the biofilm phase to the planktonic phase, and how these will affect the efficiency of phage therapy against bacteria. …”
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2662
A novel Bessel–Newton algorithm for the simulation of 2D laminar flow between two moving porous walls problem
Published 2025-01-01“…The difficulty resides in precisely and effectively solving the governing nonlinear differential equations that characterize such flows. We propose a unique Bessel–Newton algorithm that utilizes the Bessel operational matrices collocation method for discretizing the equations and employs a Newton iterative strategy to resolve the resulting nonlinear system. …”
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2663
Thermal and solutal performance analysis featuring fully developed chemically reacting micro-rotational convective flow in an open-ended vertical channel
Published 2025-01-01“…The coupled nonlinear ordinary differential equations are solved using appropriate boundary constraints. …”
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2664
Change detection in the dynamics of an intracellular protein synthesis model using nonlinear Kalman filtering
Published 2015-05-01“…The intracellular protein synthesis dynamic model is described by a set of coupled nonlinear differential equations. It is shown that such a dynamical system satisfies differential flatness properties and this allows to transform it, through a change of variables (diffeomorphism), to the so-called linear canonical form. …”
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2665
Water level monitoring by using magnetic optical sensor
Published 2025-02-01“…Firstly, mathematical modeling of the water level measurement in a tank using differential equations is described. This system comprises a printed circuit board (PCB), a novel float mechanism, an optical sensor, a microcontroller, and a visualization stage. …”
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2666
Non-local piezoelasticity to incorporate the influence of small-scale factors on the resonance behavior of the Mindlin piezoelectric polymeric nanoplates
Published 2025-06-01“…The Galerkin method is utilized to solve the partial differential equations governing the dynamics of the piezoelectric polymeric nanoplate, marking a significant methodological contribution to the field. …”
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2667
The levelized cost of energy in the presence of uncertainty on the offshore wind speed
Published 2025-01-01“…To carry out this task, we employ two techniques based on stochastic differential equations to generate wind power scenarios. Utilizing 40 years of recorded wind speed data sourced from the MERRA-2 reanalysis, we derive the input parameters of the models from fitting to 4-parameter Dagum and Johnson SB probability distributions, which shows that accurate modeling of offshore wind speeds requires dealing with complex mathematical functions that need numerical computation. …”
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2668
On the possibility of controlling the temperature of gases and liquids in a transportation system by local cooling or heating with account salt deposition
Published 2024-09-01“…The model is based on an analytical solution of partial differential equations with nonlinearity and variation of their coefficients in space and time. …”
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2669
Artificial neural network analysis of Jeffrey hybrid nanofluid with gyrotactic microorganisms for optimizing solar thermal collector efficiency
Published 2025-02-01“…The non-similar variables are introduced to the dimensional governing equations to get the non-dimensional ordinary differential equations. The Cash and Carp method is implemented to solve the non-dimensional equations. …”
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2670
Hydromagnetic Flow of Two Immiscible Couple Stress Fluids through Porous Medium in a Cylindrical Pipe with Slip Effect
Published 2023-01-01“…The resulting differential equations governing the flow in the two regions are converted to nondimensional forms using appropriate dimensionless variables. …”
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2671
Duality Identities for Moduli Functions of Generalized Melvin Solutions Related to Classical Lie Algebras of Rank 4
Published 2018-01-01“…The solution is governed by four moduli functions Hs(z) (s=1,…,4) of squared radial coordinate z=ρ2 obeying four differential equations of the Toda chain type. These functions turn out to be polynomials of powers (n1,n2,n3,n4)=(4,6,6,4),(8,14,18,10),(7,12,15,16),(6,10,6,6) for Lie algebras A4, B4, C4, and D4, respectively. …”
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2672
Forecasting Crude Oil Consumption in China Using a Grey Prediction Model with an Optimal Fractional-Order Accumulating Operator
Published 2018-01-01“…In this paper, we study the grey-extended SIGM model, which is directly estimated with differential equations. This model has high simulation and prediction accuracies and is one of the important models in grey theory. …”
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2673
Theoretical Analysis and Experimental Validation on Galloping of Iced Transmission Lines in a Moderating Airflow
Published 2021-01-01“…Galloping of an iced transmission line subjected to a moderating airflow has been analysed in this study, and a new form of galloping is discovered both theoretically and experimentally. The partial differential equations of the iced transmission line are established based on the Hamilton theory. …”
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2674
Reconstruction of self-oscillating systems with delay time modulation
Published 2025-01-01“…The object of study is self-oscillating systems described by delay-differential equations, in which the delay time is modulated by an external periodic signal. …”
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2675
Computational Role of Autocatalytic Chemical Reaction in the Dynamics of a Ternary Hybrid Nanofluid Past a Rotating Stretching Surface
Published 2024-01-01“…The governing equations are transformed into the system of ordinary differential equations (ODEs) and numerically tackled with the help of the Runge–Kutta–Fehlberg 4th 5th (RKF45) order scheme. …”
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2676
On optimization of substrate removal in a bioreactor with wall attached and suspended bacteria
Published 2014-05-01“…In the two-objective optimal control problem, the flow rate between the vessels is selected as the control variable.The treatment reactor is modelled by a system of three ordinary differential equations in which a two-point boundary value problem is embedded. …”
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2677
Second-Order Systems of ODEs Admitting Three-Dimensional Lie Algebras and Integrability
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2678
A frictional contact problem with normal damped response conditions and thermal effects for a thermo-electro-viscoelastic material
Published 2025-01-01“…The author establishes the existence of a unique weak solution to the problem by utilizing classical results for evolutionary quasivariational elliptic inequalities, parabolic differential equations and fixed point arguments. Design/methodology/approach – The author establishes a variational formulation for the model and proves the existence of a unique weak solution to the problem using classical results for evolutionary quasivariational elliptic inequalities, parabolic difierential equations and fixed point arguments. …”
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2679
Predictive Model for Deformation of Adjacent Pipelines Caused by Tunnel Boring in Twin-Lane Tunnels in Soft Ground Layers
Published 2025-01-01“…To create a discretized prediction model for the deformation of an adjacent pipeline, the pipeline structure is discretized, the differential equations governing the longitudinal deformation of the pipeline are inferred, and the displacement expressions and the solution methods of the virtual nodes of each unit are provided after discretization. …”
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2680
Development of an information measuring and control system for a quadrocopter
Published 2021-12-01“…The coordinate systems (fixed and mobile) and the kinematic scheme are given, according to which a system of differential equations is presented. The system describes the dynamics of the quadrocopter movement and takes into account the expected smooth movement of the quadrocopter with small roll and pitch angles. …”
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