Results 21 to 30 of about 211,089 (303)

TILTING CHAINS OF NEGATIVE CURVES ON RATIONAL SURFACES [PDF]

open access: yesNagoya Mathematical Journal, 2017
We introduce the notion of exact tilting objects, which are partial tilting objects $T$ inducing an equivalence between the abelian category generated by $T$ and the category of modules over the endomorphism algebra of  $T$ .
Hille, Lutz, Ploog, David
openaire   +2 more sources

Tilted Wave Fizeau Interferometer for flexible and robust asphere and freeform testing

open access: yesLight: Advanced Manufacturing, 2022
Tilted Wave Interferometry (TWI) is a measurement technique for fast and flexible interferometric testing of aspheres and freeform surfaces. The first version of the tilted wave principle was implemented in a Twyman-Green type setup with separate ...
Christian Schober   +4 more
doaj   +1 more source

Uncertainty Model for Total Solar Irradiance Estimation on Australian Rooftops

open access: yesE3S Web of Conferences, 2017
The installations of solar panels on Australian rooftops have been in rise for the last few years, especially in the urban areas. This motivates academic researchers, distribution network operators and engineers to accurately address the level of ...
Al-Saadi Hassan   +2 more
doaj   +1 more source

Comparison of Modelled and Measured Tilted Solar Irradiance for Photovoltaic Applications

open access: yesEnergies, 2017
This work assesses the performance of five transposition models that estimate the global and diffuse solar irradiance on tilted planes based on the global horizontal irradiance.
Riyad Mubarak   +3 more
doaj   +1 more source

Estimating Solar Irradiance on Tilted Surface with Arbitrary Orientations and Tilt Angles [PDF]

open access: yesEnergies, 2019
Photovoltaics modules are usually installed with a tilt angle to improve performance and to avoid water or dust accumulation. However, measured irradiance data on inclined surfaces are rarely available, since installing pyranometers with various tilt angles induces high costs.
Hsu-Yung Cheng   +5 more
openaire   +2 more sources

Surface States of Topological Insulators [PDF]

open access: yes, 2012
We develop an effective bulk model with a topological boundary condition to study the surface states of topological insulators. We find that the Dirac point energy, the band curvature and the spin texture of surface states are crystal face-dependent. For
Kane, C. L., Mele, E. J., Zhang, Fan
core   +4 more sources

Hexagons become second if symmetry is broken [PDF]

open access: yes, 2005
Pattern formation on the free surface of a magnetic fluid subjected to a magnetic field is investigated experimentally. By tilting the magnetic field the symmetry can be broken in a controllable manner.
B. Reimann   +10 more
core   +2 more sources

Chemical process effects on sloped surface with changing mass and consistent temperature [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly
The research extensively investigated the turbulent flow patterns surrounding an unbounded inclined plate under the conditions of uniform temperature and variable mass dispersion.
Gnanavel Nagarajan   +4 more
doaj   +1 more source

Restoration of the Broken D2-Symmetry in the Mean Field Description of Rotating Nuclei [PDF]

open access: yes, 1998
Signature effects observed in rotational bands are a consequence of an inherent D2-symmetry. This symmetry is naturally broken by the mean field cranking approximation when a tilted (non-principal) axis orientation of the nuclear spin becomes stable. The
Ansari   +9 more
core   +2 more sources

Roughness Measurements with Polychromatic Speckles on Tilted Surfaces [PDF]

open access: yesNanomanufacturing and Metrology, 2021
AbstractSurface light scattering enables contactless and fast measurements of surface roughness. A surface inclination alters the direction of the scattering beam and thus the measured surface roughness is calculated from the detected intensity distribution. Hence, an accurate sensor–surface alignment is necessary. In order to achieve tilt-independent
Johannes Stempin   +3 more
openaire   +1 more source

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