نتایج جستجو برای: connectivity vector

تعداد نتایج: 262138  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه 1389

چکیده ندارد.

M. Jahanshahi M. Maddah N. Najafizadegan

 Mobile sensor networks rely heavily on inter-sensor connectivity for collection of data. Nodes in these networks monitor different regions of an area of interest and collectively present a global overview of some monitored activities or phenomena. A failure of a sensor leads to loss of connectivity and may cause partitioning of the network into disjoint segments. A number of approaches have be...

Introduction: Many theories have been proposed about the etiology of autism. One is related to brain connectivity in patients with autism. Several studies have reported brain connectivity changes in autism disease. This study was performed on Electroencephalogram (EEG) studies that evaluated patients with autism, using functional brain connectivity, and compared them with typically-developing i...

Journal: :Human brain mapping 2014
Biao Jie Daoqiang Zhang Chong-Yaw Wee Dinggang Shen

Recently, brain connectivity networks have been used for classification of Alzheimer's disease and mild cognitive impairment (MCI) from normal controls (NC). In typical connectivity-networks-based classification approaches, local measures of connectivity networks are first extracted from each region-of-interest as network features, which are then concatenated into a vector for subsequent featur...

Journal: :CoRR 2016
Itir Önal Ertugrul Mete Ozay Fatos T. Yarman-Vural

In this work, we propose a novel framework to encode the local connectivity patterns of brain, using Fisher Vectors (FV), Vector of Locally Aggregated Descriptors (VLAD) and Bag-of-Words (BoW) methods. We first obtain local descriptors, called Mesh Arc Descriptors (MADs) from fMRI data, by forming local meshes around anatomical regions, and estimating their relationship within a neighborhood. T...

Journal: :Computer Networks 2006
Dan Pei Beichuan Zhang Daniel Massey Lixia Zhang

Path vector routing protocols such as BGP are known to suffer from slow convergence. In response a number of convergence enhancements have been proposed, but convergence dynamics have yet to be well understood and there has been no general framework to assess and compare the various improvement algorithms. In this paper we present a general framework to analyze the convergence delay bounds of p...

A new method to quantify, monitore and assess ecological structures and functions is the application of graph theory. In ecology, this theory demonstrates its suitable application in assessment of ecological connectivity. Connectivity is the structural attribute of landscape which facilitates the species movement among their habitats. Using graph theory, this paper aims to assess the connectivi...

Journal: :NeuroImage 2012
Cristina Gorrostieta Hernando Ombao Patrick Bédard Jerome N. Sanes

We propose a mixed-effects vector auto-regressive (ME-VAR) model for studying brain effective connectivity. One common approach to investigating inter-regional associations in brain activity is the multivariate auto-regressive (VAR) model. The standard VAR model unrealistically assumes the connectivity structure to be identical across all participants in a study and therefore, could yield misle...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1386

چکیده ندارد.

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