Results 21 to 30 of about 621,209 (319)

The Relationship Between Problem Size and Fixation Patterns During Addition, Subtraction, Multiplication, and Division

open access: yesJournal of Numerical Cognition, 2016
Eye-tracking methods have only rarely been used to examine the online cognitive processing that occurs during mental arithmetic on simple arithmetic problems, that is, addition and multiplication problems with single-digit operands (e.g., operands 2 ...
Evan T. Curtis   +2 more
doaj   +1 more source

CUISENAIRE LEARNING MEDIA FOR ADDING, SUBTRACTING, MULTIPLYING, AND DIVIDING INTEGERS

open access: yesMaPan: Jurnal Matematika dan Pembelajaran, 2021
This study aims to describe the manufacture and use of Cuisenaire rod learning media for understanding the concepts of addition, subtraction, multiplication, and division of integers for elementary school students.
Ratni Purwasih   +2 more
doaj   +1 more source

Right-Hemisphere (Spatial?) Acalculia and the Influence of Neglect

open access: yesFrontiers in Human Neuroscience, 2014
The present study aimed at exploring basic number and calculation abilities in right-hemisphere damaged patients (RHD), focusing primarily on one-digit orally presented tasks, which do not require explicit visuo-spatial abilities.
Silvia eBenavides-Varela   +7 more
doaj   +1 more source

Smooth quantum-classical transition in photon subtraction and addition processes [PDF]

open access: yes, 2009
Recently Parigi et al. [Science 317, 1890 (2007)] implemented experimentally the photon subtraction and addition processes from/to a light field in a conditional way, when the required operations were produced successfully only upon the positive outcome ...
A. V. Dodonov   +4 more
core   +1 more source

Petras Vileišis (1851–1926) as the Pioneer in creating Lithuanian “Arithmetic”

open access: yesLietuvos Matematikos Rinkinys, 2009
Petras Vileišis (1851–1926) is one of the most prominent Lithuanian personalities at the end of the 19th c. and the beginning of the 20th c., who was distinguished for his universal activity.
Juozas Banionis
doaj   +1 more source

Critical analysis of derivative dispersion relations at high energies [PDF]

open access: yes, 2003
We discuss some formal and fundamental aspects related with the replacement of integral dispersion relations by derivative forms, and their practical uses in high energy elastic hadron scattering, in particular $pp$ and $\bar{p}p$ scattering.
Abramowitz   +55 more
core   +1 more source

Appearance of the canine meninges in subtraction magnetic resonance images [PDF]

open access: yes, 2014
The canine meninges are not visible as discrete structures in noncontrast magnetic resonance (MR) images, and are incompletely visualized in T1‐weighted, postgadolinium images, reportedly appearing as short, thin curvilinear segments with minimal ...
Frean, S P   +3 more
core   +2 more sources

Preliminary study on internal carotid artery perfusion imaging and clinical application based on digital subtraction angiography

open access: yesChinese Journal of Contemporary Neurology and Neurosurgery, 2022
Background DSA is an irreplaceable diagnostic method for cerebral vascular disease. It is sensitive to intracranial macrovascular disease, but not to distal blood perfusion. In order to quantitatively assess the perfusion area of the feeding artery, this
HU Zhen   +5 more
doaj   +1 more source

Deafness and early language deprivation influence arithmetic performances

open access: yesFrontiers in Human Neuroscience, 2022
It has been consistently reported that deaf individuals experience mathematical difficulties compared to their hearing peers. However, the idea that deafness and early language deprivation might differently affect verbal (i.e., multiplication) vs ...
Margot Buyle, Virginie Crollen
doaj   +1 more source

Enhancing quantum entanglement for continuous variables by a coherent superposition of photon subtraction and addition [PDF]

open access: yes, 2011
We investigate how the entanglement properties of a two-mode state can be improved by performing a coherent superposition operation of photon subtraction and addition, proposed by Lee and Nha [Phys. Rev. A 82, 053812 (2010)], on each mode.
Ji, Se-Wan   +3 more
core   +3 more sources

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