Results 51 to 60 of about 3,489,698 (302)

Matrix Completion on Graphs

open access: yesCoRR, 2014
The problem of finding the missing values of a matrix given a few of its entries, called matrix completion, has gathered a lot of attention in the recent years. Although the problem under the standard low rank assumption is NP-hard, Candès and Recht showed that it can be exactly relaxed if the number of observed entries is sufficiently large.
Vassilis Kalofolias   +3 more
openaire   +3 more sources

Numerical evidence for phase transitions of NP-complete problems for instances drawn from Lévy-stable distributions [PDF]

open access: yes, 2012
Random NP-Complete problems have come under study as an important tool used in the analysis of optimization algorithms and help in our understanding of how to properly address issues of computational intractability.
Connelly, Abram
core   +2 more sources

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

Complete edge-colored permutation graphs

open access: yes, 2022
We introduce the concept of complete edge-colored permutation graphs as complete graphs that are the edge-disjoint union of classical permutation graphs.
Bannach, Max   +11 more
core   +1 more source

On multiplicity of quadrilaterals

open access: yesAKCE International Journal of Graphs and Combinatorics, 2015
Let Kn,n be the complete bipartite graph with n vertices in each partition. We denote M(C4,Kn,n) to be the minimum number of monochromatic copies of quadrilaterals in any 2-edge coloring of Kn,n.
S.S. Rukmani, V. Vijayalakshmi
doaj   +1 more source

Design and analysis strategies for robust microbiome ageing research

open access: yesFEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik   +5 more
wiley   +1 more source

Fitch Graph Completion

open access: yes, 2023
Horizontal gene transfer is an important contributor to evolution. According to Walter M.\ Fitch, two genes are xenologs if they are separated by at least one HGT. More formally, the directed Fitch graph has a set of genes is its vertices, and directed edges $(x,y)$ for all pairs of genes $x$ and $y$ for which $y$ has been horizontally transferred at ...
Marc Hellmuth   +2 more
openaire   +4 more sources

Partial depletion of plasminogen activator inhibitor‐1 decreases subcutaneous fat cell hypertrophy and liver cholesterol in high‐fat‐fed female mice

open access: yesFEBS Letters, EarlyView.
Obesity raises blood levels of PAI‐1, a protein linked to metabolic dysfunction‐associated steatotic liver disease in people with obesity. In female mice fed a high‐fat diet, partially lowering PAI‐1 led to smaller subcutaneous fat cells and lower liver cholesterol, without changing body weight or insulin sensitivity.
Claudia E. Ramirez Bustamante   +10 more
wiley   +1 more source

Decomposition of Complete, Complete Bipartite, and Complete Tripartite Graphs into Half-Sunlet Graphs of Order Twelve

open access: yesMathematics
The half-sunlet graph HS3k is a 2k-cycle with a pendant edge at every alternate vertex (|V|=|E|=3k). We give a complete decomposition theory for HS12 (k=4), characterising when HS12 decomposes G for G complete, complete bipartite, and complete tripartite.
Gajendran Palaniyandi   +2 more
doaj   +1 more source

Graph Isomorphism Completeness for Trapezoid Graphs

open access: yesIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2015
4 pages, 3 Postscript ...
openaire   +4 more sources

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