Results 41 to 50 of about 655,340 (280)

A Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller

International Journal of Adaptive Control and Signal Processing, EarlyView.
Block Diagram of the Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller. ABSTRACT This article introduces a discrete‐time robust adaptive one‐sample‐ahead preview super‐twisting sliding mode controller. A stability analysis of the controller by Lyapunov criteria is developed to demonstrate its robustness in handling both ...
Guilherme Vieira Hollweg, Paulo Jefferson Dias de Oliveira Evald, Shivam Chaturvedi, Hilton Abilio Gründling, Rodrigo Varella Tambara, Wencong Su   +5 more
wiley   +1 more source

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

Advanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi, Pasquale Guglielmi, Gianfranco Palumbo, Giuseppe Carbone   +3 more
wiley   +1 more source

STATEMENT AND RESEARCH METHOD SOME BOUNDARY VALUE PROBLEMS FOR A CLASS OF FOURTH ORDER PARABOLIC-HYPERBOLIC TYPE [PDF]

Vestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2014
This paper studies the methods of investigation of some boundary value problems for a class of parabolic-hyperbolic equations of the third order in the hexagonal concave areas that take advantage of the study of problems of mathematical physics in the ...
M. Mamajonov, S.M. Mamajonov
doaj   +1 more source

How students blend conceptual and formal mathematical reasoning in solving physics problems

, 2012
Current conceptions of expert problem solving depict physical/conceptual reasoning and formal mathematical reasoning as separate steps: a good problem solver first translates a physical Current conceptions of quantitative problem-solving expertise in ...
Elby, Andrew, Gupta, Ayush, Hull, Michael M., Kuo, Eric   +3 more
core   +1 more source

FORMULATION AND METHOD OF SOLVING CERTAIN BOUNDARY VALUE PROBLEMS FOR A CLASS OF EQUATIONS THIRD ORDER PARABOLIC-HYPERBOLIC TYPE [PDF]

Vestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2014
This paper studies the methods of investigation of some boundary value problems for a class of parabolic-hyperbolic equations of the third order in the hexagonal concave areas that take advantage of the study of problems of mathematical physics in the ...
M. Mamajonov, H.M. Shermatova, H. Mukadasov   +2 more
doaj   +1 more source

Fractional isoperimetric Noether's theorem in the Riemann-Liouville sense

, 2013
We prove Noether-type theorems for fractional isoperimetric variational problems with Riemann-Liouville derivatives. Both Lagrangian and Hamiltonian formulations are obtained. Illustrative examples, in the fractional context of the calculus of variations,
Almeida, Almeida, Atanacković, Atanacković, Baleanu, Bartosiewicz, Chen, Delfim F.M. Torres, El-Nabulsi, Ferreira, Frederico, Frederico, Frederico, Frederico, Gastão S.F. Frederico, Gelfand, Herzallah, Hilfer, Jafari, Kilbas, Kiryakova, Kiryakova, Klimek, Leitmann, Malinowska, Malinowska, Malinowska, Martins, Odzijewicz, Odzijewicz, Podlubny, Pooseh, Pooseh, Riewe, Riewe, Torres, Torres, Torres, Torres, van Brunt   +39 more
core   +1 more source

Enabling Digital Continuity in Virtual Manufacturing for Eco‐Efficiency Assessment of Lightweight Structures by Means of a Domain‐Specific Structural Mechanics Language: Requirements, Idea and Proof of Concept

Advanced Engineering Materials, EarlyView.
This article presents a solver‐agnostic domain‐specific language (DSL) for computational structural mechanics that strengthens interoperability in virtual product development. Using a hierarchical data model, the DSL enables seamless exchange between diverse simulation tools and numerical methods.
Martin Rädel, Andreas Schuster, Felix Schoenitz, Jean Lefèvre   +3 more
wiley   +1 more source

Approximate Methods for Solving Problems of Mathematical Physics on Neural Hopfield Networks

Mathematics, 2022
A Hopfield neural network is described by a system of nonlinear ordinary differential equations. We develop a broad range of numerical schemes that are applicable for a wide range of computational problems.
Ilya Boykov, Vladimir Roudnev, Alla Boykova   +2 more
doaj   +1 more source

Indefinite integrals of products of some exponential and trigonometric functions [PDF]

, 1972
Two integrals have been developed which are needed to solve certain problems of mathematical physics related to the Bessel and Euler equations.
Rostafinski, W. A.
core   +1 more source

Superconductivity and Electric Fields: A Relativistic Extension of BCS Superconductivity

, 2006
The effects of static electric fields on the superconducting state are studied within a relativistic extension of the BCS theory of superconductivity.Comment: To appear in the Proceedings of the Fourth International Workshop on Contemporary Problems in
Bertrand, Damien, Govaerts, Jan
core   +2 more sources