Results 31 to 40 of about 2,902,174 (292)

On energy conservation in extended magnetohydrodynamics [PDF]

open access: yesPhysics of Plasmas, 2014
A systematic study of energy conservation for extended magnetohydrodynamic models that include Hall terms and electron inertia is performed. It is observed that commonly used models do not conserve energy in the ideal limit, i.e., when viscosity and resistivity are neglected.
Kimura, Keiji, Morrison, P. J.
openaire   +2 more sources

A contribution to the theory of the extended Lagrangian formalism for rheonomic systems [PDF]

open access: yesTheoretical and Applied Mechanics, 2009
In this paper the generalization of the notion of variation in the extended Lagrangian formalism for the rheonomic mechanical systems (Đ. Mušicki, 2004) is formulated and analyzed in details.
Mušicki Đorđe
doaj   +1 more source

Analytical results connecting stellar structure parameters and extended reaction rates [PDF]

open access: yes, 2011
Possible modification in the velocity distribution in the non-resonant reaction rates leads to an extended reaction rate probability integral. The closed form representation for these thermonuclear functions are used to obtain the stellar luminosity and ...
Haubold, H. J., Kumar, D.
core   +3 more sources

The historical evolution and research trends of life cycle assessment

open access: yesGreen Carbon
Life cycle assessment (LCA) is a widely used tool for environmental decision-making; however, it still has theoretical and practical limitations. Through a comprehensive review of traditional LCA development and case studies, this study examines the ...
Min Liu, Guangyan Zhu, Yajun Tian
doaj   +1 more source

Fate of the extended states in a vanishing magnetic field: the role of spins in strongly-interacting 2D electron systems

open access: yes, 2000
In non-interacting or weakly-interacting 2D electron systems, the energy of the extended states increases as the perpendicular magnetic field approaches zero: the extended states "float up" in energy, giving rise to an insulator.
A.A. Shashkin   +19 more
core   +1 more source

Designing energy-efficient wireless access networks: LTE and LTE-advanced [PDF]

open access: yes, 2013
As large energy consumers, base stations need energy-efficient wireless access networks. This article compares the design of Long-Term Evolution (LTE) networks to energy-efficient LTE-Advanced networks. LIE-Advanced introduces three new functionalities -
Colle, Didier   +4 more
core   +1 more source

Effects of Gravitational Field of a Topological Defect on Statistical Properties of Heavy Quark-Antiquark Systems

open access: yesEast European Journal of Physics, 2022
In this paper, we determine eigen energies, eigenfunctions and statistical properties of non-relativistic heavy quarkonia interacting with the extended Cornel potential within a space-time generated by a cosmic-string.
André Likéné   +5 more
doaj   +1 more source

Balancing for unstable nonlinear systems [PDF]

open access: yes, 1993
A previously obtained method of balancing for stable nonlinear systems is extended to unstable nonlinear systems. The similarity invariants obtained by the concept of LQG balancing for an unstable linear system can also be obtained by considering a past ...
Scherpen, J.M.A.
core   +5 more sources

Causal analysis and visualization of magnetization reversal using feature extended landau free energy

open access: yesScientific Reports, 2022
The magnetization reversal in nanomagnets is causally analyzed using an extended Landau free-energy model. This model draws an energy landscape in the information space using physics-based features.
Sotaro Kunii   +4 more
doaj   +1 more source

New insights on sustainable energy security of China based on a double-frontier network data envelopment analysis

open access: yesEcological Indicators
The energy system’s security and efficiency are core to sustainable development. However, traditional evaluations of its performance often overlook the interplay between these two dimensions.
Jingjing Qu, Yajun Tian, Kechang Xie
doaj   +1 more source

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