Výsledky vyhledávání - "Dirk Langemann"

Akademický článek

Qualitative properties of solutions to a nonlinear transmission problem for an elastic Bresse beam

Autor: Tamara Fastovska, Dirk Langemann, Iryna Ryzhkova

Publikováno v: Frontiers in Applied Mathematics and Statistics, Vol 10 (2024)

We consider a nonlinear transmission problem for a Bresse beam, which consists of two parts, damped and undamped. The mechanical damping in the damping part is present in the shear angle equation only, and the damped part may be of arbitrary positive

Externí odkaz: https://doaj.org/article/50fb07569b234438a3d3032e53764584

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Akademický článek

Expand-contract plasticity on the real line

Autor: Dirk Langemann, Olesia Zavarzina

Publikováno v: Frontiers in Applied Mathematics and Statistics, Vol 10 (2024)

The study deals with plastic and non-plastic sub-spaces A of the real-line ℝ with the usual Euclidean metric d. It investigates non-expansive bijections, proves properties of such maps, and demonstrates their relevance by hands of examples. Finally

Externí odkaz: https://doaj.org/article/a2258d6bb8344ab3bdf6159e2a6d79e9

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Akademický článek

Removability conditions for anisotropic parabolic equations in a computational validation

Autor: Dirk Langemann, Mariia Savchenko

Publikováno v: Frontiers in Applied Mathematics and Statistics, Vol 10 (2024)

The article investigates removability conditions for singularities of anisotropic parabolic equations and in particular for the anisotropic porous medium equation and it aims in the numerical validation of the analytical results. The preconditions on

Externí odkaz: https://doaj.org/article/eece35906a20421ca477114e531a2d7d

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Akademický článek

Longterm existence of solutions of a reaction diffusion system with non-local terms modeling an immune response—An interpretation-orientated proof

Autor: Cordula Reisch, Dirk Langemann

Publikováno v: Partial Differential Equations in Applied Mathematics, Vol 6, Iss , Pp 100446- (2022)

This paper shows the global existence and boundedness of solutions of a reaction diffusion system modeling liver infections. The existence proof is presented step by step and the focus lies on the interpretation of intermediate results in the context

Externí odkaz: https://doaj.org/article/43d2d03f09ab44bcbd62b49b13820de8

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Akademický článek

Does weed control by precision spray technology favour the emergence of resistance?

Autor: Otto Richter, Roland Beffa, Dirk Langemann

Publikováno v: Julius-Kühn-Archiv, Iss 458, Pp 390-397 (2018)

Weed control by precision farming is recommended both by economic and ecological reasons. It is still unclear whether precision weed control favours the emergence of herbicide resistant biotypes. To investigate this, the cellular automaton model of S

Externí odkaz: https://doaj.org/article/42c212a2bb9044d5810311120ef5a890

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Akademický článek

Effect of constitution on mass of individual organs and their association with metabolic rate in humans--a detailed view on allometric scaling.

Autor: Manfred J Müller, Dirk Langemann, Isabel Gehrke, Wiebke Later, Martin Heller, Claus C Glüer, Steven B Heymsfield, Anja Bosy-Westphal

Publikováno v: PLoS ONE, Vol 6, Iss 7, p e22732 (2011)

Resting energy expenditure (REE)-power relationships result from multiple underlying factors including weight and height. In addition, detailed body composition, including fat free mass (FFM) and its components, skeletal muscle mass and internal orga

Externí odkaz: https://doaj.org/article/50aae0011b374d77b0f0e2e603fe66e4

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