Results 71 to 80 of about 389,835 (287)

Operators of equivalent sorting power and related Wilf-equivalences [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2013
We study sorting operators $\textrm{A}$ on permutations that are obtained composing Knuth's stack sorting operator \textrmS and the reverse operator $\textrm{R}$, as many times as desired.
Michael Albert, Mathilde Bouvel
doaj   +1 more source

A new transfer-matrix algorithm for exact enumerations: Self-avoiding polygons on the square lattice

open access: yes, 2011
We present a new and more efficient implementation of transfer-matrix methods for exact enumerations of lattice objects. The new method is illustrated by an application to the enumeration of self-avoiding polygons on the square lattice.
Conway A R   +11 more
core   +1 more source

Heterogeneity in the Global Practice of Central Nervous System Staging in Pediatric Acute Lymphoblastic Leukemia

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Central nervous system (CNS) involvement in childhood acute lymphoblastic leukemia (ALL) is assessed by cell counting and cytomorphology from cerebrospinal fluid (CSF) and is used for treatment stratification worldwide. The ratio of “CNS2” patients in clinical trials ranges from 3% to 40%, with unclear prognostic significance ...
Laura Almási   +14 more
wiley   +1 more source

Enumeration potential of environmental DNA for Pacific salmon stock assessments

open access: yesEnvironmental DNA
The field of environmental DNA (eDNA) has advanced over the past decade, with multiple approaches available for a variety of sampling media and species.
Geoffrey Y. Su   +8 more
doaj   +1 more source

A New Method for Calculating Individual Subitizing Ranges

open access: yesJournal of Numerical Cognition, 2018
A large body of research has shown that human adults are fast and accurate at enumerating arrays of ~1-4 items. This phenomenon has been called subitizing. Above this range, enumeration is slower and less accurate.
Tali Leibovich-Raveh   +3 more
doaj   +1 more source

Pattern-avoiding Dyck paths [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2013
We introduce the notion of $\textit{pattern}$ in the context of lattice paths, and investigate it in the specific case of Dyck paths. Similarly to the case of permutations, the pattern-containment relation defines a poset structure on the set of all Dyck
Antonio Bernini   +3 more
doaj   +1 more source

The Role of Hematopoietic Cell Transplantation in Ataxia‐Telangiectasia

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Ataxia‐telangiectasia (A‐T) is a DNA repair disorder characterized by neurodegeneration, immunodeficiency, and cancer predisposition. Hematopoietic cell transplantation (HCT) is an established therapy in related disorders such as Fanconi anemia (FA) and Nijmegen breakage syndrome (NBS), but its role in A‐T is unclear.
Laila Alkhouli   +3 more
wiley   +1 more source

New Genetic Determinants for qPCR Identification and the Enumeration of Selected Lactic Acid Bacteria in Raw-Milk Cheese

open access: yesMolecules
Lactic acid bacteria (LAB) play an important role in the ripening of cheeses and contribute to the development of the desired profile of aroma and flavor compounds.
Milena Alicja Stachelska   +4 more
doaj   +1 more source

Cell Cytometry: Review and Perspective on Biotechnological Advances

open access: yesFrontiers in Bioengineering and Biotechnology, 2019
Cell identification and enumeration are essential procedures within clinical and research laboratories. For over 150 years, quantitative investigation of body fluids such as counts of various blood cells has been an important tool for diagnostic analysis.
Abhishek Vembadi   +3 more
doaj   +1 more source

Arc-Coloured Permutations [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2013
The equidistribution of many crossing and nesting statistics exists in several combinatorial objects like matchings, set partitions, permutations, and embedded labelled graphs.
Lily Yen
doaj   +1 more source

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