Results 31 to 40 of about 4,960,468 (238)

Dynamic Matrix Rank with Partial Lookahead [PDF]

open access: yesTheory of Computing Systems, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +4 more sources

Iterative reconstruction of high-dimensional Gaussian Graphical Models based on a new method to estimate partial correlations under constraints. [PDF]

open access: yes, 2012
In the context of Gaussian Graphical Models (GGMs) with high-dimensional small sample data, we present a simple procedure, called PACOSE - standing for PArtial COrrelation SElection - to estimate partial correlations under the constraint that some of ...
Bender Andreas   +9 more
core   +1 more source

Characterization of the Existence of an N0-Completion of a Partial N0-Matrix with an Associated Directed Cycle

open access: yesThe Scientific World Journal, 2014
An n×n matrix is called an N0-matrix if all its specified principal minors are nonpositive. In the context of partial matrices, a partial matrix is called a partial N0-matrix if all its specified principal minors are nonpositive.
Cristina Jordán, Juan R. Torregrosa
doaj   +1 more source

The Redheffer Matrix of a Partially Ordered Set [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2004
R. Redheffer described an $n\times n$ matrix of 0's and 1's the size of whose determinant is connected to the Riemann Hypothesis. We describe the permutations that contribute to its determinant and its permanent in terms of integer factorizations. We generalize the Redheffer matrix to finite posets that have a 0 element and find the analogous results ...
openaire   +3 more sources

Completions of ε-Dense Partial Latin Squares [PDF]

open access: yes, 2013
A classical question in combinatorics is the following: given a partial Latin square $P$, when can we complete $P$ to a Latin square $L$? In this paper, we investigate the class of textbf{$epsilon$-dense partial Latin squares}: partial Latin squares in
Bartlett, Padraic James   +2 more
core   +1 more source

Hierarchical Community Detection Based on Partial Matrix Convergence Using Random Walks

open access: yes, 2018
Random walks are a standard tool for modeling the spreading process in social and biological systems. But in the face of large-scale networks, to achieve convergence, iterative calculation of the transition matrix in random walk methods consumes a lot of
Wei Zhang   +4 more
semanticscholar   +1 more source

{101¯2} twinning nucleation in magnesium assisted by alternative sweeping of partial dislocations via an intermediate precursor

open access: yesJournal of Magnesium and Alloys, 2020
Molecular dynamic simulation and transmission electron microscopy (TEM) characterization was employed to investigate the {101¯2} twinning mechanism in magnesium.
Zhen Zhang   +6 more
doaj   +1 more source

Dynamic stiffness matrix of partial-interaction composite beams

open access: yesAdvances in Mechanical Engineering, 2015
Composite beams have a wide application in building and bridge engineering because of their advantages of mechanical properties, constructability and economic performance. Unlike static characteristics, the methods of studying the dynamic characteristics
Guangjian Bao, Rongqiao Xu
doaj   +1 more source

Some Characterizations and Properties of a New Partial Order

open access: yesJournal of Mathematics, 2020
On the basis of Löwner partial order and core partial order, we introduce a new partial order: LC partial order. By applying matrix decomposition, core inverse, core partial order, and Löwner partial order, we give some characteristics of LC partial ...
Xiaoji Liu, Fang Gui
doaj   +1 more source

Treatment of Ingrown Toenail With Proximolateral Matrix Partial Excision and Matrix Phenolization [PDF]

open access: yesThe Annals of Family Medicine, 2012
Ingrown toenail is one of the most common nail conditions. Although many surgical treatments are described for complicated cases, recurrence of pain and postoperative disability are common. We evaluated the long-term efficacy of proximolateral matrix partial excision followed by chemical matricectomy with phenol.We performed 348 proximolateral partial ...
Karaca, Nezih, Dereli, Tugrul
openaire   +3 more sources

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