Results 61 to 70 of about 2,131,152 (220)

Possible evidence of a spontaneous spin-polarization in mesoscopic 2D electron systems

open access: yes, 2003
We have experimentally studied the non-equilibrium transport in low-density clean 2D electron systems at mesoscopic length scales. At zero magnetic field (B), a double-peak structure in the non-linear conductance was observed close to the Fermi energy in
Beere, H. E.   +4 more
core   +1 more source

Energetic assessment of a precalcining rotary kiln in a cement plant using process simulator and neural networks

open access: yesAlexandria Engineering Journal, 2022
Cement production has been increasing rapidly leading to energy consumption, with serious cost implications and environmental challenges. Energy efficiency is a key component required to maintain the cement company’s environmental strategy. In this study,
Anthony I. Okoji   +4 more
doaj  

Nil Clean Ideal [PDF]

open access: yesarXiv, 2017
Motivated by the concept of clean ideals, we introduce the notion of nil clean ideals of a ring. We define an ideal $I$ of a ring $R$ to be nil clean ideal if every element of $I$ can be written as a sum of an idempotent and a nilpotent element of $R$. In this article we discuss various properties of nil clean ideals.
arxiv  

The phase diagram of high-Tc's: Influence of anisotropy and disorder

open access: yes, 1996
We propose a phase diagram for the vortex structure of high temperature superconductors which incorporates the effects of anisotropy and disorder. It is based on numerical simulations using the three-dimensional Josephson junction array model. We support
A. Arribere   +34 more
core   +1 more source

Clean Energy Infrastructure Educational Initiative [PDF]

open access: yes, 2012
The Clean Energy Infrastructure Educational Initiative represents a collaborative effort by the University of Dayton, Wright State University and Sinclair Community College.
Gilbert, Robert   +2 more
core   +2 more sources

Thermal diffractive corrections to Casimir energies

open access: yes, 2011
We study the interplay of thermal and diffractive effects in Casimir energies. We consider plates with edges, oriented either parallel or perpendicular to each other, as well as a single plate with a slit.
Daniel Kabat   +4 more
core   +2 more sources

Constrained hyperbolic divergence cleaning in smoothed particle magnetohydrodynamics with variable cleaning speeds [PDF]

open access: yes, 2016
We present an updated constrained hyperbolic/parabolic divergence cleaning algorithm for smoothed particle magnetohydrodynamics (SPMHD) that remains conservative with wave cleaning speeds which vary in space and time. This is accomplished by evolving the quantity $\psi / c_h$ instead of $\psi$.
arxiv   +1 more source

Analyzing the journey and future trajectories of clean cooking research in India: a bibliometric analysis and case study research

open access: yesDiscover Sustainability
The clean cooking challenge in India is deeply intertwined with socioeconomic, cultural, and infrastructural barriers. Despite government initiatives, a significant portion of the population still depends on solid biomass for cooking, leading to severe ...
Amardeep Yadav   +4 more
doaj   +1 more source

AlphaClean: Automatic Generation of Data Cleaning Pipelines [PDF]

open access: yesarXiv, 2019
The analyst effort in data cleaning is gradually shifting away from the design of hand-written scripts to building and tuning complex pipelines of automated data cleaning libraries. Hyper-parameter tuning for data cleaning is very different than hyper-parameter tuning for machine learning since the pipeline components and objective functions have ...
arxiv  

The sub-arcsecond hard X-ray structure of loop footpoints in a solar flare

open access: yes, 2010
The newly developed X-ray visibility forward fitting technique is applied to Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) data of a limb flare to investigate the energy and height dependence on sizes, shapes, and position of hard X-ray ...
Conway   +20 more
core   +1 more source

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