Results 41 to 50 of about 1,923 (167)

B-Inflation

open access: yes, 2005
We propose a novel model of inflation based on a large class of covariant effective actions containing only the second derivatives of a scalar field. The initial conditions leading to the inflationary solutions in this model are rather generic.
Anisimov, Alexey   +2 more
core   +1 more source

Multiobjective Optimization for Torsional Stiffness of Antiroll Bar on Trucks

open access: yesShock and Vibration, Volume 2026, Issue 1, 2026.
The antiroll bar (ARB) plays an important role in reducing the rollover phenomenon and uneven load distribution between the wheels on an axle, thus enhancing the safety and roll stability of vehicles. This study proposes a method for optimizing the torsional stiffness of the ARB on trucks, with three main objectives: (1) building a general model of a ...
Ngo Van Dung   +4 more
wiley   +1 more source

Reciprocal Convex Costs for Ratio Matching: Axiomatic Characterization

open access: yesAxioms
We study ratio-induced mismatch cost functions of the form c(s,o)=JιS(s)/ιO(o) built from positive scale maps ιS:S→R>0 and ιO:O→R>0 and a penalty J:(0,∞)→[0,∞).
Jonathan Washburn, Amir Rahnamai Barghi
doaj   +1 more source

The Formula of Justice: The OntoTopological Basis of Physica and Mathematica* [PDF]

open access: yes, 2015
Dialectica: Mathematica and Physica, Truth and Justice, Trick and Life. Mathematica as the Constructive Metaphysica and Ontology. Mathematica as the constructive existential method.
Rogozhin, Vladimir
core  

A Discrete Mechanics Approach to the Cosserat Rod Theory—Part II: Geometric Insights About Static Equilibria on Vertex and Staggered Grids

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 126, Issue 23, 15 December 2025.
ABSTRACT We apply the discrete mechanics approach to the discretisation of geometrically exact Cosserat rods. We consider discrete Cosserat rods defined on a vertex (or nodal) grid, as well as on a staggered grid, and provide a review and update of the results already obtained in Part I for the nodal model variant and, for the first time, present a ...
Holger Lang   +5 more
wiley   +1 more source

Applications of Inverse Operators to a Fractional Partial Integro-Differential Equation and Several Well-Known Differential Equations

open access: yesFractal and Fractional
This paper mainly consists of two parts: (i) We study the uniqueness, existence, and stability of a new fractional nonlinear partial integro-differential equation in Rn with three-point conditions and variable coefficients in a Banach space using inverse
Chenkuan Li, Wenyuan Liao
doaj   +1 more source

The idea of quantity at the origin of the legitimacy of mathematization in physics [PDF]

open access: yes, 2003
Newton's use of mathematics in mechanics was justified by him from his neo-platonician conception of the physical world that was going along with his «absolute, true and mathematical concepts» such as space, time, motion, force, etc.
Paty, Michel
core   +2 more sources

High‐speed railway track geometry robust maintenance with Bayesian deep learning‐enhanced physical‐informed neural networks

open access: yesComputer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 24, Page 3934-3952, 6 October 2025.
Abstract Millimeter‐level active control of track geometry irregularity (TGI) is crucial for intelligent maintenance of high‐speed railways. To address the efficiency limitations of existing time‐domain characteristics‐dominated TGI maintenance scheme design methods and vehicle–track coupled dynamics evaluation models, this paper proposes a new ...
Huakun Sun   +6 more
wiley   +1 more source

The D’Alembert Inevitability Theorem

open access: yesMathematics
We study functions satisfying the composition law F(xy)+F(x/y)=P(F(x),F(y)) with a symmetric polynomial combiner P. We prove that symmetry together with a quadratic degree bound on P forces a composition law of d’Alembert type.
Jonathan Washburn   +2 more
doaj   +1 more source

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