Results 61 to 70 of about 515,471 (330)

Finite element simulation of barge impact into a rigid wall

Alexandria Engineering Journal, 2014
The forces and locations of inland barge impacts currently control the design specifications for lock walls. This has resulted in a significant increase in the final construction costs of these walls.
H.W. Leheta, A.M. Elhewy, W. El Sayed Mohamed   +2 more
doaj   +1 more source

Validation of a finite element model for fracture mechanics specimens [PDF]

, 2012
Single parameter formulations have shown to be insufficient to describe constraint effects in fracture mechanics specimens. This has lead researchers to a two parameter approach like the J-Q theory. In order to investigate constraint effects, the authors
Cauwelier, Matthias, De Waele, Wim, Hertelé, Stijn, Maelfait, Jens, Van Minnebruggen, Koen, Verstraete, Matthias   +5 more
core  

Interplay between circadian and other transcription factors—Implications for cycling transcriptome reprogramming

FEBS Letters, EarlyView.
This perspective highlights emerging insights into how the circadian transcription factor CLOCK:BMAL1 regulates chromatin architecture, cooperates with other transcription factors, and coordinates enhancer dynamics. We propose an updated framework for how circadian transcription factors operate within dynamic and multifactorial chromatin landscapes ...
Xinyu Y. Nie, Jerome S. Menet
wiley   +1 more source

Regional Characterization of Deep Convective Clouds for Enhanced Imager Stability Monitoring and Methodology Validation

Remote Sensing
The NASA CERES project conducts an independent assessment of the calibration stability of MODIS and VIIRS reflective solar bands to ensure consistency in CERES-derived clouds and radiative flux products.
David Doelling, Prathana Khakurel, Conor Haney, Arun Gopalan, Rajendra Bhatt   +4 more
doaj   +1 more source

Advances in CALIPSO (IIR) cirrus cloud property retrievals – Part 2: Global estimates of the fraction of cirrus clouds affected by homogeneous ice nucleation [PDF]

Atmospheric Chemistry and Physics
Cirrus clouds can form through two ice nucleation pathways (homo- and heterogeneous ice nucleation; henceforth hom and het, respectively) that result in very different cloud physical and radiative properties.
D. L. Mitchell, A. Garnier
doaj   +1 more source

An analytical model for elasto-plastic buckling of columns [PDF]

, 2013
The theory of buckling strength of compression members in the plastic range has been extensively studied, and numerical methods already exist which deal with such behaviour.
Izzuddin, B.A., Jowhari Moghadam, S.
core  

Some Open Points in Nonextensive Statistical Mechanics

, 2011
We present and discuss a list of some interesting points that are currently open in nonextensive statistical mechanics. Their analytical, numerical, experimental or observational advancement would naturally be very welcome.Comment: 30 pages including 6 ...
Biro T. S., Borland L., Caruso F., CONSTANTINO TSALLIS, Fermi E., Ferri G. L., Hilhorst H. J., Hilhorst H. J., Hilhorst H. J., Khachatryan V., Leo M., Liboff R. L., Moyano L. G., Osorio R., Rodriguez A., Thistleton W. J., Tsallis C., Tsallis C.   +17 more
core   +1 more source

Mechanisms of parasite‐mediated disruption of brain vessels

FEBS Letters, EarlyView.
Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira, Sílvia Arroz‐Madeira, Cláudio A. Franco, Sara Silva Pereira   +3 more
wiley   +1 more source

Entropy regularized reinforcement learning using large deviation theory

Physical Review Research, 2023
Reinforcement learning (RL) is an important field of research in machine learning that is increasingly being applied to complex optimization problems in physics.
Argenis Arriojas, Jacob Adamczyk, Stas Tiomkin, Rahul V. Kulkarni   +3 more
doaj   +1 more source

Scalar Field Oscillations Contributing to Dark Energy [PDF]

, 2005
We use action-angle variables to describe the basic physics of coherent scalar field oscillations in the expanding universe. These analytical mechanics methods have some advantages, like the identification of adiabatic invariants.
Eduard Massó, Francesc Rota, Gabriel Zsembinszki, H. Goldstein, L. D. Landau, M. Sami   +5 more
core   +3 more sources