Results 21 to 30 of about 3,457 (281)

Ted Chiang’s Asian American Amusement at Alien Arrival

open access: yesReligions, 2020
In the 2016 movie Arrival, aliens with advanced technology appear on Earth in spaceships reminiscent of the black obelisk in 2001: A Space Odyssey.
Brett J. Esaki
doaj   +1 more source

Variational principles in physics

open access: yes, 2007
Optimization under constraints is an essential part of everyday life. Indeed, we routinely solve problems by striking a balance between contradictory interests, individual desires and material contingencies.
Basdevant, Jean-Louis
core   +1 more source

Information-Geometric Models in Data Analysis and Physics II

open access: yesMathematics
This paper continues the development of information-geometric models for data analysis and physics by focusing on their formulation and interpretation through variational principles.
D. Bernal-Casas, José M. Oller
doaj   +1 more source

Enhancing Variational Informational Principles: A Complexified Approach with Arbitrary Order Norms

open access: yesMathematics
This paper offers an innovative exploration of variational informational principles by incorporating complexification and studying norms of arbitrary order, thereby surpassing the limitations of the conventional L2 norm. For years, variational principles
D. Bernal-Casas, José M. Oller
doaj   +1 more source

Variational principles of second, first and intermediate kinds for non-holonomic mechanics

open access: yes, 1999
The differential variational principles of second kind for non-holonomic mechanics ore given, from which a number of integral variational principles of second kind are set up. From the latter, the general relation of delta q'-delta q and the general form
Zhu, RZ (reprint author), Chinese Acad Sci, Inst Mech, Lab Nonlinear Mech Continuous Media, Beijing 100080, Peoples R China.   +1 more
core   +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

Variational principles for eigenvalues of the Klein-Gordon equation

open access: yes, 2006
In this paper variational principles for eigenvalues of an abstract model of the Klein-Gordon equation with electromagnetic potential are established. They are used to characterize and estimate eigenvalues in cases where the essential spectrum has a gap ...
Matthias Langer   +4 more
core   +1 more source

Variational principles for reduced plasma physics

open access: yesJournal of Physics: Conference Series, 2009
Reduced equations that describe low-frequency plasma dynamics play an important role in our understanding of plasma behavior over long time scales. One of the oldest paradigms for reduced plasma dynamics involves the ponderomotive Hamiltonian formulation of the oscillation-center dynamics of charged particles (over slow space-time scales) in a weakly ...
openaire   +2 more sources

A novel quinazolinone insulin receptor inhibitor and its synergy with an EGFR inhibitor in glucose‐driven glioblastoma

open access: yesMolecular Oncology, EarlyView.
The novel styrylquinazolinone‐based molecule W1B effectively suppresses glioblastoma by inhibiting IGF1R and EGFR. In high‐glucose microenvironments driving tumor resistance, W1B acts synergistically with the EGFR inhibitor dacomitinib. This combination safely blocks compensatory survival signaling in zebrafish xenograft models. Showcasing promising in
Patryk Rurka   +9 more
wiley   +1 more source

Symmetries in physics: philosophical reflections [PDF]

open access: yes, 2002
This is the table of contents and first chapter of "Symmetries in physics: philosophical reflections", edited by Katherine Brading and Elena Castellani, Cambridge University Press, 2003.
Castellani, Elena   +4 more
core  

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