Results 61 to 70 of about 26,383,033 (201)
Astrocyte heterogeneity and hierarchical information flow: reframing glial computation
Frontiers in Cellular NeuroscienceAstrocytes are active elements in the brain; they exhibit complex, highly branched processes that contact neurons and blood vessels to regulate neuronal activity and vasoactive responses.
Oswaldo Pérez +2 more
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Maximal Planar Graph Theory and the Four-Color Conjecture
This open access book integrates foundational principles with advanced methodologies concerning maximal planar graphs. It offers readers an exceptional examination of graph structures, chromatic polynomials, and the construction and proof techniques of ...
Xu, Jin
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Small‐world network and neuroscience
Brain-XSmall‐world networks are of great significance in the field of neuroscience. As the universal nature of the human brain network, their heterogeneous pattern of change in patients with different diseases may satisfy the need for auxiliary objective ...
Yan‐Kun Han +12 more
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Frontiers in Human Neuroscience, 2017 Background and Purpose: Repetitive transcranial magnetic stimulation (rTMS) induces widespread changes in brain connectivity. As the network topology differences induced by a single session of rTMS are less known we undertook this study to ascertain ...
Rose D. Bharath +12 more
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Graph-theoretic analysis of multistationarity using degree theory [PDF]
Mathematics and Computers in Simulation, 2017 Biochemical mechanisms with mass action kinetics are often modeled by systems of polynomial differential equations (DE). Determining directly if the DE system has multiple equilibria (multistationarity) is difficult for realistic systems, since they are large, nonlinear and contain many unknown parameters.
Carsten Conradi, Maya Mincheva
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Tits alternatives for graph products
, 2015 We discuss various types of Tits Alternative for subgroups of graph products of groups, and prove that, under some natural conditions, a graph product of groups satisfies a given form of Tits Alternative if and only if each vertex group satisfies this ...
Antolin, Yago, Minasyan, Ashot
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Directed Graph Theory for the Analysis of Biological Regulatory Networks
Frontiers in Applied Mathematics and StatisticsSynchronous regulated biological networks are often represented as logical diagrams, where the precise interactions between elements remain obscured. Here, we introduce a novel type of excitation-inhibition graph based on Boolean logic, which we term “logical directed graph” or simply, “logical digraph.” Such a logical digraph facilitates the ...
Martha Takane +4 more
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A cluster analysis based on graph theory
Vegetatio, 1974 A clustering method is presented that groups sample plots (stands or other units) together, based on their proximity in a multidimensional test space in which the axes represent the attributes (species) of the individuals (sample plots, etc.). The resulting dendrogram is used to make subjective judgements on the type and distinctiveness of the ...
Van Groenewoud, H., Ihm, P.
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Action planning for graph transition systems [PDF]
, 2005 Graphs are suitable modeling formalisms for software and hardware systems involving aspects such as communication, object orientation, concurrency, mobility and distribution.
Lluch-Lafuente, Alberto +5 more
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Jixie chuandong, 2008 Through analysis of the graph theory model,the conditions that the EGTs’ graph theory model must be met is summarized.On the basis of graph theory model presented in literature[1],a concept of module entity and basic loop in graph theory model is ...
史晓影, 陈良钰, 薛隆泉
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