نتایج جستجو برای: grid distribution map

تعداد نتایج: 858378  

The feature map represented by the set of weight vectors of the basic SOM (Self-Organizing Map) provides a good approximation to the input space from which the sample vectors come. But the timedecreasing learning rate and neighborhood function of the basic SOM algorithm reduce its capability to adapt weights for a varied environment. In dealing with non-stationary input distributions and changi...

Load balancing is an important issue in distributed systems. In addition, using distributed generation sources such as photovoltaic is increasing. Power electronic converters are main interfaces between the sources and the grid. In this paper, a method has been proposed to reduce the load imbalancing in distribution networks using PV Grid Interface Converter. Two DC/DC and DC/AC converters have...

Journal: :CoRR 2005
Erik D. Demaine Mohammad Taghi Hajiaghayi

In this paper we extend the theory of bidimensionality to two families of graphs that do not exclude fixed minors: map graphs and power graphs. In both cases we prove a polynomial relation between the treewidth of a graph in the family and the size of the largest grid minor. These bounds improve the running times of a broad class of fixed-parameter algorithms. Our novel technique of using appro...

2002
Marta Guerra Edward Walker Carl Jones Susan Paskewitz M. Roberto Cortinas Ashley Stancil Louisa Beck Matthew Bobo Uriel Kitron

The distribution and abundance of Ixodes scapularis were studied in Wisconsin, northern Illinois, and portions of the Upper Peninsula of Michigan by inspecting small mammals for ticks and by collecting questing ticks at 138 locations in state parks and natural areas. Environmental data were gathered at a local level (i.e., micro and meso levels), and a geographic information system (GIS) was us...

Journal: :Neurocomputing 2007
Erick Chastain Yanxi Liu

General navigation requires a spatial map that is not anchored to one environment. The firing fields of the “grid cells” found in the rat dorsolateral medial entorhinal cortex (dMEC) could be such a map. Our work provides an explanation for how the context-independent properties of “grid cell” firing arise. We use computational means to analyze and validate the geometric and algebraic invariant...

Due to the growth and expansion of cities and the unchanged distribution network, an important issue for electricity distribution companies is customer satisfaction with the quality of received power. It is clear that with the expansion of load centers, the amount of line power flow increases, that creates problems such as voltage drop and increased losses. Distribution network reconfiguration ...

Journal: :CoRR 2018
Hesham M. Eraqi Jens Honer Sebastian Zuther

Drivable free space information is vital for autonomous vehicles that have to plan evasive maneuvers in realtime. In this paper, we present a new efficient method for environmental free space detection with laser scanner based on 2D occupancy grid maps (OGM) to be used for Advanced Driving Assistance Systems (ADAS) and Collision Avoidance Systems (CAS). Firstly, we introduce an enhanced inverse...

Journal: :IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 2022

Energy system information for electricity access planning such as the locations and connectivity of transmission distribution towers—termed power grid—is often incomplete, outdated, or altogether unavailable. Furthermore, conventional means collecting this is costly limited. We propose to automatically map grid in overhead remotely sensed imagery using an deep learning approach. T...

1998
Sergei Chumakov

A method for the generation of quasi-isometric boundarytted curvilinear coordinate systems for arbitrary domains is developed on the basis of the theory of conformal, quasi-conformal and quasi-isometric mappings and results from the non-Euclidean geometry concerning surfaces of constant curvature. The method as it is proposed has an advantage of similar methods developed earlier that number of ...

2017
Ali-akbar Agha-mohammadi Eric Heiden Karol Hausman Gaurav Sukhatme

Occupancy grids are common frameworks for creating a map of the environment using a robot. Traditional occupancy grid mapping algorithms assume that map voxels are independent of each other. In addition, they utilize a map representation, wherein each voxel stores a single number representing the occupancy probability. This leads to conflicts in the map, and more importantly, inconsistency betw...

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