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Subtraction Menger algebras [PDF]

open access: yesSemigroup Forum, 2010
characterizations of Menger algebras of partial $n$-place functions defined on a set $A$ and closed under the set-theoretic difference functions treatment as subsets of the Cartesian product $A^{n+1}$ are ...
B.M. Schein   +12 more
core   +4 more sources

Flexibility and Adaptivity in Arithmetic Strategy Use: What Children Know and What They Show

open access: yesJournal of Numerical Cognition, 2022
Central elements of adaptive expertise in arithmetic problem solving are flexibility, using multiple strategies, and adaptivity, selecting the optimal strategy.
Marian Hickendorff
doaj   +1 more source

Usefulness of subtraction pelvic magnetic resonance imaging for detection of ovarian endometriosis [PDF]

open access: yesYeungnam University Journal of Medicine, 2020
Background To minimize damage to the ovarian reserve, it is necessary to evaluate the follicular density in the ovarian tissue surrounding endometriosis on preoperative imaging.
Hyun Jung Lee
doaj   +1 more source

The Mystery of Return: Agamben and Bloch on St. Paul’s Parousia and Messianic Temporality

open access: yesPraktyka Teoretyczna, 2020
During the last two decades, a sharp re-reading of St. Paul’s letters allowed several thinkers to embed a messianic element in their political philosophy.
Federico Filauri
doaj   +1 more source

Improved Epstein-Glaser Renormalization II. Lorentz invariant framework [PDF]

open access: yes, 2002
The Epstein--Glaser type T-subtraction introduced by one of the authors in a previous paper is extended to the Lorentz invariant framework. The advantage of using our subtraction instead of Epstein and Glaser's standard W-subtraction method is especially
Gracia-Bondia, J. M., Lazzarini, S.
core   +3 more sources

Diagnostic Accuracy of Subtraction Coronary CT Angiography in Severely Calcified Segments: Comparison Between Readers With Different Levels of Experience

open access: yesFrontiers in Cardiovascular Medicine, 2022
PurposeSubtraction coronary CT angiography (CCTA) may reduce blooming and beam-hardening artifacts. This study aimed to assess its value in improving the diagnostic accuracy of readers with different experience levels.MethodWe prospectively enrolled ...
Fang Li   +9 more
doaj   +1 more source

Informed baseline subtraction of proteomic mass spectrometry data aided by a novel sliding window algorithm [PDF]

open access: yes, 2016
Proteomic matrix-assisted laser desorption/ionisation (MALDI) linear time-of-flight (TOF) mass spectrometry (MS) may be used to produce protein profiles from biological samples with the aim of discovering biomarkers for disease.
Bagley, Christopher J.   +2 more
core   +3 more sources

A subtraction scheme for computing QCD jet cross sections at NNLO: integrating the subtraction terms I [PDF]

open access: yes, 2008
In previous articles we outlined a subtraction scheme for regularizing doubly-real emission and real-virtual emission in next-to-next-to-leading order (NNLO) calculations of jet cross sections in electron-positron annihilation.
Somogyi, Gábor, Trócsányi, Zoltán
core   +3 more sources

A rare case of fusiform basilar trunk aneurysm

open access: yesRadiology Case Reports, 2022
Aneurysms in the posterior circulation and distal sites are more common among the pediatric population than among adults, with a male predominance. Symptoms of an aneurysm in the posterior circulation can include a stiff neck or severe headache due to a ...
Nguyen-Thi To Tran, MD   +8 more
doaj  

Transcervical approach for carotid artery stenting without flow reversal: A case report

open access: yesRadiology Case Reports, 2022
: Current treatment options for high-risk patients with severe carotid artery stenosis include transcarotid artery revascularization, transfemoral carotid artery stenting, and carotid endarterectomy.
Nguyen-Luu Giang, MD   +9 more
doaj  

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