Dynamic Topology Analysis for Spatial Patterns of Multifocal Lesions on MRI

Service restoration of distribution networks in contingency situations is one of the highly investigated and challenging problems. In the conventional service restoration method, utilities reconfigure the topological structure of the distribution networks to supply the consumer load demands. However, the advancements in renewable distributed generations define a new dimension for developing service restoration methodologies. This paper proposes a hierarchical service restoration mechanism for distribution networks in the presence of distributed generations and multiple faults. The service restoration problem is modeled as a complicated and hierarchical program. The objectives are to achieve the maximization of loads restored with minimization of switch operations while simultaneously satisfying grid operational constraints and ensuring a radial operation configuration. We present the service restoration mechanism, which includes the dynamic topology analysis, matching isolated islands with renewable distributed generations, network reconfiguration, and network optimization. A new code scheme that avoids feasible solutions is applied to generate candidate solutions to reduce the computational burden. We evaluate the proposed mechanism on the IEEE 33 and 69 systems and report on the collected results under multitype fault cases. The results demonstrate the importance of the available renewable distributed generations in the proposed mechanism. Moreover, simulation results verify that the proposed mechanism can obtain reasonable service restoration plans to achieve the maximization of loads restored and minimization of switching operations under different faults.

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Dynamical Topology Analysis Of Vanet Based On Complex Networks Theory

Cybernetics and Information Technologies ◽

10.2478/cait-2014-0053 ◽

2014 ◽

Vol 14 (5) ◽

pp. 172-186 ◽

Cited By ~ 5

Author(s):

Hong Zhang ◽

Jie Li

Keyword(s):

Degree Distribution ◽

Traffic Congestion ◽

High Speed ◽

Ad Hoc ◽

Preferential Attachment ◽

Small World ◽

Clustering Coefficient ◽

Topology Analysis ◽

Scale Free ◽

Dynamic Topology

Abstract A Vehicular Ad hoc NETwork (VANET) is a special subset of multi-hop Mobile Ad hoc Networks, in which the vehicles wireless interfaces can communicate with each other, as well as with fixed equipments alongside city roads or highways. Vehicular mobility dynamic characteristics, including high speed, predictable, restricted mobility pattern significantly affect the performance of routing protocols in a real VANET. Based on the existing studies, here we propose a testing network according to the preferential attachment on the degree of nodes and analyze VANET model characteristics for finding out the dynamic topology from the instantaneous degree distribution, instantaneous clustering coefficient and average path length. Analysis and simulation results demonstrate that VANET has a small world network features and is characterized by a truncated scale-free degree distribution with power-law degree distribution. The dynamic topology analysis indicates a possible mechanism of VANET, which might be helpful in the traffic congestion, safety and management.

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A Dynamic Topology Analysis Method in Distribution Systems

Journal of Computational and Theoretical Nanoscience ◽

10.1166/jctn.2016.6009 ◽

2016 ◽

Vol 13 (11) ◽

pp. 8544-8551

Author(s):

Juan Wen ◽

Yanghong Tan ◽

Kejun Lei

Keyword(s):

Distribution Systems ◽

Analysis Method ◽

Topology Analysis ◽

Dynamic Topology

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A comparison of training methods in the recognition of spatial patterns.

PsycEXTRA Dataset ◽

10.1037/e461052004-001 ◽

1956 ◽

Cited By ~ 1

Author(s):

Malcolm D. Arnoult

Keyword(s):

Spatial Patterns ◽

Training Methods

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Hawk kite as potential bird scare device (the case of pigeons and grain processing factory)

Ukrainian Journal of Ecology ◽

10.15421/2018_350 ◽

2018 ◽

Vol 8 (2) ◽

pp. 334-336

Author(s):

A. V. Matsyura

Keyword(s):

Spatial Patterns ◽

Repellent Effect ◽

Preliminary Results ◽

Temporal And Spatial Patterns ◽

Grain Processing ◽

Feral Pigeons ◽

Temporal And Spatial ◽

Bird Behavior ◽

Hooded Crows

Here we presented the preliminary results of hawk kite usage against the feral pigeons in some grain processing factory. We studied the temporal and spatial patterns of repellent effect and bird behavior. We suggested the feral pigeons gradually increase the level of tolerance towards the hawk kite if no additional repellent measures were undertaken. Moreover, even initially the feral pigeons demonstrate higher tolerance towards the hawk kite compared to the Rooks or Hooded Crows.

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