Results 31 to 40 of about 4,100,336 (288)

Dynamic BOLD functional connectivity in humans and its electrophysiological correlates [PDF]

, 2012
Neural oscillations subserve many human perceptual and cognitive operations. Accordingly, brain functional connectivity is not static in time, but fluctuates dynamically following the synchronization and desynchronization of neural populations.
Verena Brodbeck, Laufs, Helmut, Wegner, Frederic von, Morzelewski, Astrid, Enzo eTagliazucchi, Astrid Morzelewski, Helmut Laufs, Verena eBrodbeck, Helmut eLaufs, Frederic eVon Wegner, Frederic von Wegner, Astrid eMorzelewski, Enzo Tagliazucchi, Tagliazucchi, Enzo, Brodbeck, Verena   +14 more
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Resting State fMRI Reveals Diminished Functional Connectivity in a Mouse Model of Amyloidosis [PDF]

, 2013
Introduction: Functional connectivity (FC) studies have gained immense popularity in the evaluation of several neurological disorders, such as Alzheimer’s disease (AD). AD is a complex disorder, characterised by several pathological features. The problem
Rafael Delgado Y Palacios, Christian Bigot, Van Der Linden, Anne-Marie, Bigot, Christian, Van der Linden, Annemie, Rafael Delgado y Palacios (498616), Verhoye, Marleen, Disha Shah, Annemie Van der Linden, Christian Bigot (498617), Dany V D'Souza, Shah, Disha, Disha Shah (498613), Annemie Van der Linden (2227165), Elisabeth Jonckers, D'Souza, Dany V., Greetje Vanhoutte, Jonckers, Elisabeth, Jelle Praet (498614), Delgado y Palacios, Rafael, Greetje Vanhoutte (498615), Marleen Verhoye, Praet, Jelle, Marleen Verhoye (95635), Vanhoutte, Greetje, Jelle Praet, Elisabeth Jonckers (353117), Dany V. D’Souza (498618)   +27 more
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Evaluation of Pore-Type Carbonate Reservoir Connectivity Based on Electrical Imaging

Cejing jishu
Compared with conventional clastic rock reservoir, carbonate rock reservoir has less porosity and permeability relationship, because of its strong heterogeneity and complex pore structure.
SUN Jianmeng, CHENG Yaodong, HE Juan, LIU Zhang, CHEN Peiyuan   +4 more
doaj   +1 more source

Topological Evaluation of Four Para-Line Graphs Absolute Pentacene Graphs Using Topological Indices

International Journal of Analysis and Applications, 2023
A real-number to molecular structure mapping is a topological index. It is a graph invariant method for describing physico-chemical properties of molecular structures specific substances. In that article, We examined pentacene’s chemical composition. The
Mukhtar Ahmad, Muhammad Jafar Hussain, Gulnaz Atta, Sajid Raza, Irfan Waheed, Ather Qayyum   +5 more
doaj   +1 more source

Trees of extremal connectivity index

Discrete Applied Mathematics, 2006
Let \(d(x)\) denote the degree of node \(x\) in a graph \(G\) and let \(\alpha\) be a non-zero constant. The connectivity index, or Randić index, \(w_\alpha(G)\) of a graph \(G\) is the sum of \((d(u)d(v))^\alpha\) over all edges \(uv\) of \(G\). Let \(T\) be a tree with \(n\) nodes and \(k\) end-nodes. The authors give sharp upper and lower bounds for
Huiqing Liu, Mei Lu, Feng Tian 0008
openaire   +3 more sources

Local Connectivity of Uncertain Random Graphs

IEEE Access, 2020
As the system becomes more and more complex, we are usually in the state of indeterminacy. In the real world, the states of uncertainty and randomness are the two most common types of indeterminacy.
Hui Li, Bo Zhang, Jin Peng, Xiangyu Ge
doaj   +1 more source

Introduction Totally and Partial Connectivity Indices in Neutrosophic graphs with Application in Behavioral Sciences [PDF]

Neutrosophic Sets and Systems, 2020
Connectivity is one of the most important concepts in graph theory. Since Neutrosophic Graphs are a branch of graphs, connectivity will be very important in this branch as well.
Masoud Ghods, Zahra Rostami
doaj   +1 more source

Spatio-Temporal Variation of Hydrological Connectivity and Natural–Human Coupling Driving Forces Analysis in the Beijing-Tianjin-Hebei Region

Land
Hydrological connectivity is crucial for maintaining the stability and function of regional ecology and is a fundamental link to solving regional water and ecological environmental problems.
Wenxuan Wang, Meirong Tian, Haijun Zhang, Kun Liu   +3 more
doaj   +1 more source

Minimum Variable Connectivity Index of Trees of a Fixed Order

Discrete Dynamics in Nature and Society, 2020
The connectivity index, introduced by the chemist Milan Randić in 1975, is one of the topological indices with many applications. In the first quarter of 1990s, Randić proposed the variable connectivity index by extending the definition of the ...
Shamaila Yousaf, Akhlaq Ahmad Bhatti, Akbar Ali   +2 more
doaj   +1 more source

Connectivity and Equity in the Americas Program Initiative final report 2006-2009 [PDF]

, 2010
The Connectivity and Equity in the Americas (CEA) program supports research on the use of Information and Communication Technologies (ICTs) as a means to foster sustainable development in Latin America and the Caribbean (LAC). Since the inception of CEA (
IDRC. Connectivity and Equity in the Americas
core   +1 more source