Results 21 to 30 of about 645,192 (310)

Hilbert’s energy–momentum tensor extended

open access: yesAnnals of Physics, 2023
A variational derivative of a Lagrangian with regard to the metric tensor is used in classical field models to define Hilbert's energy-momentum tensor for a matter field. In solid-state physics, constitutive relationships between fundamental field variables are a topic that is covered by a broad variety of models. In this context, a constitutive tensor
openaire   +3 more sources

Extending the energy efficiency gap

open access: yesEnergy Policy, 2012
In order to reach the EU: s 20–20–20 primary energy savings target, energy efficiency needs to increase.
Backlund, Sandra   +3 more
openaire   +3 more sources

Energy of extended bipartite double graphs [PDF]

open access: yesMATCH Communications in Mathematical and in Computer Chemistry, 2021
The energy of a graph is the sum of the absolute values of its eigenvalues. In this article, an exact relation between the energy of extended bipartite double graph and the energy of a graph together with some other graph parameters is given. As a consequence, equienergetic, borderenergetic, orderenergetic and non-hyperenergetic extended bipartite ...
Ramane, Harishchandra S.   +2 more
openaire   +2 more sources

Energy parameters and novel algorithms for an extended nearest neighbor energy model of RNA. [PDF]

open access: yesPLoS ONE, 2014
We describe the first algorithm and software, RNAenn, to compute the partition function and minimum free energy secondary structure for RNA with respect to an extended nearest neighbor energy model.
Ivan Dotu, Vinodh Mechery, Peter Clote
doaj   +1 more source

Generalized energy conditions in extended theories of gravity [PDF]

open access: yesPhysical Review D, 2015
12 pages, version accepted for publication in Phys.Rev ...
CAPOZZIELLO, SALVATORE   +2 more
openaire   +3 more sources

Extended logotropic fluids as unified dark energy models

open access: yesEuropean Physical Journal C: Particles and Fields, 2019
We study extended classes of logotropic fluids as unified dark energy models. Under the hypothesis of the Anton–Schmidt scenario, we consider a universe obeying a single fluid model with a logarithmic equation of state.
Kuantay Boshkayev   +2 more
doaj   +1 more source

Matching analysis for on-site building energy systems involving energy conversion, storage and hybrid grid connections [PDF]

open access: yes, 2014
Under the background that all new buildings in EU should be nearly zero-energy buildings (nZEB) from the year of 2021, the energy and building industries are progressing towards the direction of decreased local building energy demand and enhanced on-site
Cao, Sunliang
core   +1 more source

Energy-saving building program evaluation with an integrated method under linguistic environment

open access: yesJournal of Civil Engineering and Management, 2020
In the context of sustainable development, building energy conservation has become the development trend of the construction industry. The selection of energy-saving building program, as a multi-criteria decision-making (MCDM) problem, has a direct ...
Min Huang   +5 more
doaj   +1 more source

Extended Lagrangian formalism for rheonomic systems with variable mass [PDF]

open access: yesTheoretical and Applied Mechanics, 2017
In this paper the extended Lagrangian formalism for the rheonomic systems (Dj. Mušicki, 2004), which began with the modification of the mechanics of such systems (V. Vujičić, 1987), is extended to the systems with variable mass, with emphasis on
Mušicki Đorđe
doaj   +1 more source

Adaptive Equivalent Fuel Consumption Minimization Based Energy Management Strategy for Extended-Range Electric Vehicle

open access: yes, 2023
Unlike battery electric vehicles, extended-range electric vehicles have one more energy source, so a reasonable energy management strategy (EMS) is crucial to the fuel economy of the vehicles.
Dongwei Yao   +7 more
core   +1 more source

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