Results 21 to 30 of about 15,070,262 (238)

A Substitutive Coefficients Network for the Modelling of Thermal Systems: A Mono-Zone Building Case Study

open access: yesEnergies, 2021
A modelling approach based on the Substitutive Coefficients Network (SCN) is developed to predict the thermal behavior of a system in the dynamic state-space, without requiring knowledge of the thermal mass.
Lahoucine Ouhsaine   +3 more
doaj   +1 more source

Influence of relaxation times on heat transfer in human head exposed to microwave frequencies

open access: yesJournal of Thermal Engineering, 2021
The electromagnetic energy carried by microwaves interacts with human head and produces thermal changes within the head. Conventionally, Pennes’ bioheat transfer equation (BTE) is employed to investigate the thermal changes in biological tissues. Pennes’
Jagbir KAUR, Suyeb KHAN
doaj   +1 more source

Cerebral Microstructural Alterations in Patients With Early Parkinson’s Disease Detected With Quantitative Magnetic Resonance Measurements

open access: yesFrontiers in Aging Neuroscience, 2021
Objective: Parkinson’s disease (PD) is the second most common neurodegenerative disease in the elderly. In early stages of PD, patients typically display normal brain magnet resonance imaging (MRI) in routine screening.
Martin Klietz   +8 more
doaj   +1 more source

Structural relaxation in silicate melts and non-Newtonian melt rheology in geologic processes [PDF]

open access: yes, 1989
The timescale of structural relaxation in a silicate melt defines the transition from liquid (relaxed) to glassy (unrelaxed) behavior. Structural relaxation in silicate melts can be described by a relaxation time, , consistent with the observation that ...
Dingwell, Donald B., Webb, Sharon L.
core   +1 more source

Revisiting lagrange relaxation (LR) for processing large-scale mixed integer programming (MIP) problems [PDF]

open access: yes, 2004
Lagrangean Relaxation has been successfully applied to process many well known instances of NP-hard Mixed Integer Programming problems. In this paper we present a Lagrangean Relaxation based generic solver for processing Mixed Integer Programming ...
Siamitros, C, Mitra, G, Poojari, CA
core   +5 more sources

Dynamic properties of NH_3CH_2COOH·H_2PO_3 ferroelectric

open access: yesCondensed Matter Physics, 2018
Using a modified pseudospin model of NH_3CH_2COOH·H_2PO_3 ferroelectric taking into account the piezoelectric coupling with strains ε_i, ε_4, ε_5 and ε_6 within Glauber method in two-particle claster approximation, we have calculated components of ...
I.R. Zachek   +3 more
doaj   +1 more source

Dielectric Study of Lithium and Sodium Borophosphate Glasses

open access: yesCommunications, 2017
Ionic conductivity and dielectric properties such as dielectric permittivity and loss tangent for the samples of lithium and sodium borophosphate glasses were investigated using the electrical conductivity measurements in the range of frequency from 10 ...
Jana Mizerakova   +2 more
doaj   +1 more source

Timed Automata Relaxation for Reachability [PDF]

open access: yes, 2021
AbstractTimed automata (TA) have shown to be a suitable formalism for modeling real-time systems. Moreover, modern model-checking tools allow a designer to check whether a TA complies with the system specification. However, the exact timing constraints of the system are often uncertain during the design phase.
Jaroslav Bendík   +3 more
openaire   +1 more source

Cytosine ribose flexibility in DNA : a combined NMR 13C spin relaxation and molecular dynamics simulation study [PDF]

open access: yes, 2008
Using (13)C spin relaxation NMR in combination with molecular dynamic (MD) simulations, we characterized internal motions within double-stranded DNA on the pico- to nano-second time scale.
Elke Duchardt   +7 more
core   +2 more sources

Relaxation Times for Hamiltonian Systems [PDF]

open access: yesCommunications in Mathematical Physics, 2010
26 ...
A. Maiocchi, A. Carati
openaire   +3 more sources

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