Results 121 to 130 of about 12,675,276 (305)

Stable boundary conditions for Cartesian grid calculations [PDF]

open access: yes
The inviscid Euler equations in complicated geometries are solved using a Cartesian grid. This requires solid wall boundary conditions in the irregular grid cells near the boundary.
Berger, M. J., Leveque, R. J.
core   +1 more source

Is photovoltaic power a cost-effective energy solution for rural peoples in western Sudan? [PDF]

open access: yes, 2006
Sudan like most poor countries suffers from a deficiency in the supply of electrical power, especially for rural areas. Less than 10% of the total population, can benefit from the national grid connection.
Croxford, B, Rizig, M
core  

Fractional Skyrmion Tubes in Chiral‐Interfaced 3D Magnetic Nanowires

open access: yesAdvanced Functional Materials, EarlyView.
In chiral 3D helical magnetic nanowires, the coupling between the geometric and magnetic chirality provides a way to create topological spin states like vortex tubes. Here, it is demonstrated how the breaking of this coupling in interfaced 3D nanowires of opposite chirality leads to even more complex topological spin states, such as fractional ...
John Fullerton   +11 more
wiley   +1 more source

Land-cover change analysis in 50 global cities by using a combination of Landsat data and analysis of grid cells

open access: yesEnvironmental Research Letters, 2014
Global urban expansion has created incentives to convert green spaces to urban/built-up area. Therefore, understanding the distribution and dynamics of the land-cover changes in cities is essential for better understanding of the cities’ fundamental ...
Hasi Bagan, Yoshiki Yamagata
doaj   +1 more source

Vestibular control of entorhinal cortex activity in spatial navigation

open access: yesFrontiers in Integrative Neuroscience, 2014
Navigation in rodents depends on both self-motion (idiothetic) and external (allothetic) information. Idiothetic information has a predominant role when allothetic information is absent or irrelevant.
Pierre-Yves eJacob   +5 more
doaj   +1 more source

A new direction for grid cells [PDF]

open access: yesLearning & Behavior, 2015
Krupic, Bauza, Burton, Barry, & O'Keefe (Grid cell symmetry is shaped by environmental geometry. Nature, 518, 232-235, 2015) found that the grids of grid cells in the entorhinal cortex of rats become sparser at the sharp end of a trapezoidal space. This makes grids, and grid cells, unsuitable for measuring distance traveled (odometry) and suggests that
openaire   +2 more sources

Cu‐Based MOF/TiO2 Composite Nanomaterials for Photocatalytic Hydrogen Generation and the Role of Copper

open access: yesAdvanced Functional Materials, EarlyView.
HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan   +9 more
wiley   +1 more source

Variational log-Gaussian point-process methods for grid cells. [PDF]

open access: yesHippocampus, 2023
Rule ME   +5 more
europepmc   +2 more sources

Grid codes vs. multi-scale, multi-field place codes for space

open access: yesFrontiers in Computational Neuroscience
IntroductionRecent work on bats flying over long distances has revealed that single hippocampal cells have multiple place fields of different sizes.
Robin Dietrich   +5 more
doaj   +1 more source

DC-shifts in amplitude in-field generated by an oscillatory interference model of grid cell firing

open access: yesFrontiers in Systems Neuroscience, 2014
Oscillatory interference models propose a mechanism by which the spatial firing pattern of grid cells can arise from the interaction of multiple oscillators that shift in relative phase. These models produce aspects of the physiological data such as the
Angela Christine Elizabeth Onslow   +2 more
doaj   +1 more source

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