Results 61 to 70 of about 11,355 (304)

Zasady wariacyjne a ich teleologiczna interpretacja

open access: yesZagadnienia Filozoficzne w Nauce, 2008
In this paper the problem of philosophical interpretation of variational principles is under investigation. The difference between differential and integral principles is presented and the history of various formulations of integral principles is ...
Dominika Domaciuk
doaj  

Metamaterial Acoustics on the (2 + 1)D Einstein Cylinder

open access: yesMathematics, 2021
The Einstein cylinder is the first cosmological model for our universe in modern history. Its geometry not only describes a static universe—a universe being invariant under time reversal—but it is also the prototype for a maximally symmetric spacetime ...
Michael M. Tung
doaj   +1 more source

Epigenetic heterogeneity and plasticity in therapy‐induced tumor states through single‐cell multi‐omics

open access: yesMolecular Oncology, EarlyView.
Single‐cell multi‐omics reveals epigenetic heterogeneity across therapy‐adaptive tumor states, including quiescent/dormant, drug‐tolerant persister, and EMT‐like phenotypes. By linking regulatory features with state‐associated biomarkers, these approaches inform biomarker‐guided therapeutic strategies for evolving tumors.
Hee Jung Kim   +3 more
wiley   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei   +3 more
wiley   +1 more source

Action-Driven flows for causal variational principles

open access: yesForum of Mathematics, Sigma
We introduce action-driven flows for causal variational principles, being a class of nonconvex variational problems emanating from applications in fundamental physics.
Felix Finster, Franz Gmeineder
doaj   +1 more source

A Systematic Approach to Standard Dissipative Continua

open access: yesAxioms, 2023
Many isothermal dissipative continuum problems can be formulated in a variational setting using the concept of “standard dissipative continua”. A major advantage of this approach is that complex problems can be cast into a compact, thermodynamically ...
Sebastian Stark
doaj   +1 more source

A Variational Principle for Ground Spaces [PDF]

open access: yesReports on Mathematical Physics, 2018
The ground spaces of a vector space of hermitian matrices, partially ordered by inclusion, form a lattice constructible from top to bottom in terms of intersections of maximal ground spaces. In this paper we characterize the lattice elements and the maximal lattice elements within the set of all subspaces using constraints on operator cones.
openaire   +4 more sources

Chameleon sequences reveal structural effects in proteins representing micelle‐like distribution of hydrophobicity

open access: yesFEBS Open Bio, EarlyView.
Amino acids sequence of two different proteins with the same sequence (chameleon sequence—black boxes) represent in 3D structure of the proteins different secondary structures: HHHH—helical and BBB—Beta‐structural. The chains folded in water environment adopt different III‐order structures in which the chameleon fragments appear to adopt similar status
Irena Roterman   +4 more
wiley   +1 more source

Variational characterizations for eigenfunctions of analytic self-adjoint operator functions [PDF]

open access: yesOpuscula Mathematica, 2013
In this paper we consider Rellich's diagonalization theorem for analytic self-adjoint operator functions and investigate variational principles for their eigenfunctions and interlacing statements.
Georgios Katsouleas, John Maroulas
doaj   +1 more source

Variational principles for resonances II [PDF]

open access: yes, 1982
Variational principles for calculating the complex poles of Green's function are given.
Ramm, Alexander G., A. G. Ramm
core   +1 more source

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