Results 21 to 30 of about 262,063 (357)

Phantom depth and stable phantom exactness [PDF]

open access: yesTransactions of the American Mathematical Society, 2007
Phantom depth, phantom nonzerodivisors, and phantom exact sequences are analogues of the non-“phantom” notions which have been useful in tackling the (very difficult) localization problem in tight closure theory. In the present paper, these notions are developed further and partially reworked. For instance, although no analogue of a long exact sequence
Neil Epstein, Neil Epstein
openaire   +2 more sources

PECULIARITIES OF COLLECTION AND CRYOPRESERVATION OF STALLION SPERM

open access: yesUkrainian Journal of Veterinary Sciences, 2020
Horse breeding in Ukraine has always been an industry of national importance, the functional orientation of which has changed because of the development of socioeconomic relations.
O. V. MYHOVYCH   +2 more
doaj   +1 more source

THE PHANTOM OF THE OPRA [PDF]

open access: yesModern Physics Letters A, 2006
The Observed Perlmutter-Riess Acceleration (OPRA) implies that the expansion of the Universe is currently increasing and is motivation for the so-called phantom energy models. We consider the dynamics of phantom scalar field models. An important physical time constraint, which can be used to rule out many cosmological models, is obtained from the ...
J. Latta, Alan Coley, Sigbjørn Hervik
openaire   +3 more sources

The phantom illusion

open access: yesVision Research, 2015
It is well known that visible luminance gradients may generate contrast effects. In this work we present a new paradoxical illusion in which the luminance range of gradual transitions has been reduced to make them invisible. By adopting the phenomenological method proposed by Kanizsa, we have found that unnoticeable luminance gradients still generate ...
GALMONTE, ALESSANDRA   +3 more
openaire   +5 more sources

On phantom thermodynamics [PDF]

open access: yesPhysics Letters B, 2008
The thermodynamic properties of dark energy fluids described by an equation of state parameter $ =p/ $ are rediscussed in the context of FRW type geometries. Contrarily to previous claims, it is argued here that the phantom regime $ 0$ and $S>0$ in the course of the Universe expansion.
J. A. S. Lima, S. H. Pereira
openaire   +2 more sources

"Phantom Friend" or "Just a Box with Information"

open access: yesProc. ACM Hum. Comput. Interact., 2019
As voice-based conversational agents such as Amazon Alexa and Google Assistant move into our homes, researchers have studied the corresponding privacy implications, embeddedness in these complex social environments, and use by specific user groups.
Alisha Pradhan   +2 more
semanticscholar   +1 more source

Analysis of influencing factors of shear wave elastography of the superficial tissue: A phantom study

open access: yesFrontiers in Medicine, 2022
Shear wave elastography (SWE) is widely used in clinical work. But there is no standard protocol and operation specification for SWE acquisition methods, which impacts the diagnosis and clinical staging.
Qiyang Chen   +3 more
doaj   +1 more source

The “Phantom” Force1 [PDF]

open access: yesNature, 1878
IT might be supposed that permanent and entirely local or “internal” force-pairs of this kind acting on innumerable material couplets in a system would so disturb the individual energies of their motions that no general conclusion as to the total change of energy during the progress of such a system's motion could be drawn; but the simple law that ...
openaire   +3 more sources

A review of current theories and treatments for phantom limb pain

open access: yesJournal of Clinical Investigation, 2018
Following amputation, most amputees still report feeling the missing limb and often describe these feelings as excruciatingly painful. Phantom limb sensations (PLS) are useful while controlling a prosthesis; however, phantom limb pain (PLP) is a ...
Kassondra L. Collins   +9 more
semanticscholar   +1 more source

Estimation of anatomical dimensions of the thorax from computed tomography images of the adult and pediatric Indian population for developing optimal radiological protocols

open access: yesJournal of Medical Physics, 2021
Purpose: Ionizing radiation has been extensively used for medical diagnosis since its discovery in 1895; however, excessive use can lead to deleterious effects.
Vandana Nathan   +2 more
doaj   +1 more source

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