نتایج جستجو برای: grid cell

تعداد نتایج: 1762363  

Smart grid concept is introduced to modify the power grid by utilizing new information and communication technology. Smart grid needs live power consumption monitoring to provide required services and for this issue, bi-directional communication is essential. Security and privacy are the most important requirements that should be provided in the communication. Because of the complex design of s...

In this paper, a supervisory controller is proposed to manage the power flow in a hybrid AC/DC micro-grid for both grid-connected and disconnected modes. When the hybrid AC/DC micro-grid is connected to the utility grid, power surplus or shortage leads to power trade between the micro-grid and the utility grid. In the grid-disconnected mode, the renewable power sources (wind and solar generatio...

2016
Jacob Ls Bellmund Lorena Deuker Tobias Navarro Schröder Christian F Doeller

Anticipating the future is a key motif of the brain, possibly supported by mental simulation of upcoming events. Rodent single-cell recordings suggest the ability of spatially tuned cells to represent subsequent locations. Grid-like representations have been observed in the human entorhinal cortex during virtual and imagined navigation. However, hitherto it remains unknown if grid-like represen...

2012
Eric A. Zilli

Since the discovery of grid cells in rat entorhinal cortex, many models of their hexagonally arrayed spatial firing fields have been suggested. We review the models and organize them according to the mechanisms they use to encode position, update the positional code, read it out in the spatial grid pattern, and learn any patterned synaptic connections needed. We mention biological implementatio...

2014
Mr John Wood john. wood

It has long been considered necessary that large-scale energy storage be installed on power grids in developed and developing economies. Storage damps the grid system, reduces its inefficiencies, offsets peaks, reduces fossil fuel loads and creates the opportunity for larger penetration of renewable energy into the grid. However there have been substantial technical, safety, environmental and f...

Journal: :Computer Methods in Applied Mechanics and Engineering 2021

Grid generation for reservoir simulation, must honour classical key geological features and multilateral wells. The to be honoured are classified into two groups; (1) involving layers, faults, pinchouts fractures, (2) well distributions. In the former, control-volume boundary aligned grids (BAGs) required, while in latter, control-point (defined as centroid of control-volume) (WAGs) required. D...

Journal: :Hippocampus 2008
A Jeewajee C Barry J O'Keefe N Burgess

The oscillatory interference model (Burgess et al. (2007) Hippocampus 17:801-812) explains the generation of spatially stable, regular firing patterns by medial entorhinal cortical (mEC) grid cells in terms of the interference between velocity-controlled oscillators (VCOs) with different preferred directions. This model predicts specific relationships between the intrinsic firing frequency and ...

Journal: :Current opinion in neurobiology 2011
Neil Burgess John O'Keefe

Neuronal firing in the hippocampal formation (HF) of freely moving rodents shows striking examples of spatialorganization in the form of place, directional, boundary vector and grid cells. The firing of place and grid cells shows an intriguing form of temporal organization known as 'theta phase precession'. We review the mechanisms underlying theta phase precession of place cell firing, ranging...

2004
Gokul Varadhan Shankar Krishnan T.V.N. Sriram Dinesh Manocha

We address the problem of computing a topology preserving isosurface from a volumetric grid using Marching Cubes for geometry processing applications. We present a novel topology preserving subdivision algorithm to generate an adaptive grid. Our algorithm ensures that every grid cell satisfies two local geometric properties: a complex cell property and a star-shaped property. We show that these...

2015
Mans Hulden Miikka Silfverberg Jerid Francom

Text-based geolocation classifiers often operate with a grid-based view of the world. Predicting document location of origin based on text content on a geodesic grid is computationally attractive since many standard methods for supervised document classification carry over unchanged to geolocation in the form of predicting a most probable grid cell for a document. However, the grid-based approa...

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