Results 21 to 30 of about 1,349,667 (249)

Geometry of normal graphs in Euclidean space and applications to the Penrose inequality in Minkowski [PDF]

open access: yes, 2013
The Penrose inequality in Minkowski is a geometric inequality relating the total outer null expansion and the area of closed, connected and spacelike codimension-two surfaces S in the Minkowski spacetime, subject to an additional convexity assumption. In
Mars, Marc, Soria, Alberto
core   +1 more source

Slowly rotating charged fluid balls and their matching to an exterior domain [PDF]

open access: yes, 2002
The slow-rotation approximation of Hartle is developed to a setting where a charged rotating fluid is present. The linearized Einstein-Maxwell equations are solved on the background of the Reissner-Nordstrom space-time in the exterior electrovacuum ...
A. García   +10 more
core   +2 more sources

The German Version of the Mobile App Rating Scale (MARS-G): Development and Validation Study

open access: yesJMIR mHealth and uHealth, 2020
Background The number of mobile health apps (MHAs), which are developed to promote healthy behaviors, prevent disease onset, manage and cure diseases, or assist with rehabilitation measures, has exploded.
Eva-Maria Messner   +9 more
semanticscholar   +1 more source

Bottom-up construction of ontologies [PDF]

open access: yes, 1998
Presents a particular way of building ontologies that proceeds in a bottom-up fashion. Concepts are defined in a way that mirrors the way their instances are composed out of smaller objects.
Mars, N.J.I., Vet, P.E. van der
core   +3 more sources

Claiming expertise from betwixt and between: Digital humanities librarians, emotional labor, and genre theory [PDF]

open access: yes, 2017
Librarians\u27 liminal (intermediate) position within academia situates us to make unique contributions to digital humanities (DH). In this article, we use genre theory, feminist theory, and theories of emotional labor to explore the importance of ...
Logsdon, Alexis   +2 more
core   +2 more sources

Accelerating expansion and change of signature

open access: yes, 2007
We show that some types of sudden singularities admit a natural explanation in terms of regular changes of signature on brane-worlds in AdS$_{5}$. The present accelerated expansion of the Universe and its possible ending at a sudden singularity may ...
Cattoën   +5 more
core   +1 more source

Diophantine approximation on polynomial curves [PDF]

open access: yesMath. Proc. Cambridge Philos. Soc. 163 (2017), no. 3, 533-546, 2015
In a paper from 2010, Budarina, Dickinson and Levesley studied the rational approximation properties of curves parametrized by polynomials with integral coefficients in Euclidean space of arbitrary dimension. Assuming the dimension is at least three and excluding the case of linear dependence of the polynomials together with $P(X)\equiv 1$ over the ...
arxiv   +1 more source

The oxidation of toluene on various molybdenum-containing catalysts [PDF]

open access: yes, 1981
The activities for the vapour-phase oxidation of toluene of various molybdenum-containing catalysts have been measured in a flow microreactor operating at 1 atm pressure.
Fransen, T., Mars, P., Nag, N.K.
core   +2 more sources

Machine Learning for Mars Exploration [PDF]

open access: yesarXiv, 2021
Risk to human astronauts and interplanetary distance causing slow and limited communication drives scientists to pursue an autonomous approach to exploring distant planets, such as Mars. A portion of exploration of Mars has been conducted through the autonomous collection and analysis of Martian data by spacecraft such as the Mars rovers and the Mars ...
arxiv  

What Martian Meteorites Reveal About the Interior and Surface of Mars

open access: yesJournal of Geophysical Research: Planets, 2020
Martian meteorites are the only direct samples from Mars, thus far. Currently, there are a total of 262 individual samples originating from at least 11 ejection events.
A. Udry   +5 more
semanticscholar   +1 more source

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