Results 51 to 60 of about 1,519,388 (324)
Evaluation of repair bond strength with different methods for zirconia restorations
Bulletin of the National Research Centre, 2022 Background The aim of the study is to assess the bonding of two repair methods for zirconia. Null hypothesis Repair of zirconia with Cojet (3M Cojet sand, 68,411) and clearfil (clearfil REPAIR Kuraray Japan) has the same effect on the bond strength of ...
Rami M. Galal +2 more
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Assessing statistical significance in causal graphs
BMC Bioinformatics, 2012 Background Causal graphs are an increasingly popular tool for the analysis of biological datasets. In particular, signed causal graphs--directed graphs whose edges additionally have a sign denoting upregulation or downregulation--can be used to model ...
Chindelevitch Leonid +4 more
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Frontiers in Psychology, 2020 Graphs are useful tools to communicate meaningful patterns in data, but their efficacy varies considerably based on the figure’s construction and presentation medium. Specifically, a digital format figure can be dynamic, allowing the reader to manipulate
Jeffrey Chase Hood +2 more
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Testing network autocorrelation without replicates.
PLoS ONE, 2022 In this paper, we propose a portmanteau test for whether a graph-structured network dataset without replicates exhibits autocorrelation across units connected by edges. Specifically, the well known Ljung-Box test for serial autocorrelation of time series
Kwun Chuen Gary Chan +3 more
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PLoS ONE, 2022 We evaluated the performance of cardiac arrest-specific prognostication scores developed for outcome prediction in the early hours after out-of-hospital cardiac arrest (OHCA) in predicting long-term outcomes using independent data.
Wan Young Heo +9 more
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Complete Multipartite Graphs and their Null Set
Electronic Notes in Discrete Mathematics, 2014 Abstract For every natural number h, a graph G is said to be h-magic if there exists a labelling l : E ( G ) → Z h \ { 0 } such that the induced vertex set labelling l + : V ( G ) → Z h defined by l + ( v ) = ∑ u v ∈ E ( G ) l ( u v ) , is a constant map.
S. Akbari, S. Bahramian
openaire +1 more source
Psychological methods, 2022 Next Eigenvalue Sufficiency Test (NEST; Achim, 2017) is a recently proposed method to determine the number of factors in exploratory factor analysis (EFA).
Nils Brandenburg, Martin Papenberg
semanticscholar +1 more source
The problem of deficiency indices for discrete Schr\"odinger operators on locally finite graphs [PDF]
, 2011 The number of self-adjoint extensions of a symmetric operator acting on a complex Hilbert space is characterized by its deficiency indices. Given a locally finite unoriented simple tree, we prove that the deficiency indices of any discrete Schr\"odinger ...
Christoph Schumacher +5 more
core +6 more sources
Analytical maximum-likelihood method to detect patterns in real networks [PDF]
, 2011 In order to detect patterns in real networks, randomized graph ensembles that preserve only part of the topology of an observed network are systematically used as fundamental null models. However, their generation is still problematic.
Garlaschelli, Diego, Squartini, Tiziano
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Properties of metabolic graphs: biological organization or representation artifacts?
BMC Bioinformatics, 2011 Background Standard graphs, where each edge links two nodes, have been extensively used to represent the connectivity of metabolic networks. It is based on this representation that properties of metabolic networks, such as hierarchical and small-world ...
Nakhleh Luay, Zhou Wanding
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