Results 21 to 30 of about 467,517 (284)

Connected bulk negative index photonic metamaterials [PDF]

open access: yesOptics Letters, 2009
We show the designs of bulk one- and two-dimensionally isotropic photonic negative index metamaterials working around telecom wavelengths. The designed structures are inherently connected, which makes fabrication by direct laser writing and chemical vapor deposition or other techniques possible.
Durdu O, Güney   +3 more
openaire   +2 more sources

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

open access: yesNeutrosophic 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

On atom–bond connectivity index of connected graphs

open access: yesDiscrete Applied Mathematics, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xing, Rundan, Zhou, Bo, Dong, Fengming
openaire   +2 more sources

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

open access: yesInternational 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   +5 more
doaj   +1 more source

Can meaningful effective connectivities be obtained between auditory cortical regions? [PDF]

open access: yes, 2001
Structural equation modelling (SEM) of neuroimaging data can be evaluated both for the goodness of fit of the model and for the strength of path coefficients (as an index of effective connectivity).
Gonçalves, MS   +3 more
core   +2 more sources

Evaluation of Pore-Type Carbonate Reservoir Connectivity Based on Electrical Imaging

open access: yesCejing 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   +4 more
doaj   +1 more source

Cognitive reserve in granulin-related frontotemporal dementia: from preclinical to clinical stages [PDF]

open access: yes, 2013
OBJECTIVE Consistent with the cognitive reserve hypothesis, higher education and occupation attainments may help persons with neurodegenerative dementias to better withstand neuropathology before developing cognitive impairment.
Alessandro Padovani   +52 more
core   +3 more sources

Topological Indices of Certain Transformed Chemical Structures

open access: yesJournal of Chemistry, 2020
Topological indices like generalized Randić index, augmented Zagreb index, geometric arithmetic index, harmonic index, product connectivity index, general sum-connectivity index, and atom-bond connectivity index are employed to calculate the bioactivity ...
Xuewu Zuo   +4 more
doaj   +1 more source

Local Connectivity of Uncertain Random Graphs

open access: yesIEEE 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

Localization transition on complex networks via spectral statistics

open access: yes, 2005
The spectral statistics of complex networks are numerically studied. The features of the Anderson metal-insulator transition are found to be similar for a wide range of different networks.
B. Bollobas   +13 more
core   +1 more source

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