Results 71 to 80 of about 82,590 (220)

Building Flexible, Low-Cost Wireless Access Networks With Magma [PDF]

open access: yesarXiv, 2022
Billions of people remain without Internet access due to availability or affordability of service. In this paper, we present Magma, an open and flexible system for building low-cost wireless access networks. Magma aims to connect users where operator economics are difficult due to issues such as low population density or income levels, while preserving
arxiv  

Finding suitable paths for the elliptic curve primality proving algorithm

open access: yesActa Universitatis Sapientiae: Informatica, 2013
An important part of the Elliptic Curve Primality Proving algorithm consists of finding a sequence of elliptic curves with appropriate properties. In this paper we consider a strategy to search for an improved sequence, as part of an implementation ...
Járai Antal, Kiss Gyöngyvér
doaj   +1 more source

Double Magma associated with Ward and double Ward quasigroups [PDF]

open access: yesarXiv, 2019
We describe types of double magma associated with Ward quasigroups, double Ward quasigroups, their duals and the groups they generate. Ward quasigroup double magma and unipotent, right modular, left unital double magma are proved to be improper. Necessary and sufficient conditions are found on a pair of right modular, left unital magma (and right-left ...
arxiv  

Magma transfer at Campi Flegrei caldera (Italy) before the 1538 AD eruption

open access: yesScientific Reports, 2016
Calderas are collapse structures related to the emptying of magmatic reservoirs, often associated with large eruptions from long-lived magmatic systems.
M. D. Di Vito   +11 more
semanticscholar   +1 more source

Towards a Generalized Cayley–Dickson Construction through Involutive Dimagmas

open access: yesMathematics
A generalized construction procedure for algebraic number systems is hereby presented. This procedure offers an efficient representation and computation method for complex numbers, quaternions, and other algebraic structures.
Nelson Martins-Ferreira   +1 more
doaj   +1 more source

A possible model for initiationof ULF oscillation in magma

open access: yesAnnals of Geophysics, 2004
During the period just prior to an earthquake, an electomagnetic emission develops over seismic zones. In this paper, a model of excitation of magnetic fields over zones of volcanic activity is proposed.
L.V. Nikitina, Y. A. Kopytenko
doaj   +1 more source

Characteristic of Lokon Volcano Deformation of 2009 - 2011 Based on GPS Data

open access: yesIndonesian Journal on Geoscience, 2014
DOI: 10.17014/ijog.v7i4.147Precursor of Lokon Volcano eruptions in 2011 is believed to begin since December 2007 which was marked by increasing number of volcanic earthquakes and gas emission.
Estu Kriswati   +5 more
doaj   +1 more source

Fe in magma - An overview

open access: yesAnnals of Geophysics, 2009
The strong influence of physical conditions during magma formation on Fe equilibria offers a large variety of possibilities to deduce these conditions from Fe-bearing phases and phase assemblages found in magmatic rocks. Conditions of magma genesis and their evolution are of major interest for the understanding of volcanic eruptions. A ...
openaire   +4 more sources

On invariants for surface-links in entropic magmas via marked graph diagrams [PDF]

open access: yesarXiv, 2022
M. Niebrzydowski and J. H. Przytycki defined a Kauffman bracket magma and constructed the invariant P of framed links in 3-space. The invariant is closely related to the Kauffman bracket polynomial. The normalized bracket polynomial is obtained from the Kauffman bracket polynomial by the multiplication of indeterminate and it is an ambient isotopy ...
arxiv  

Modeling Viscosity of Volcanic Melts With Artificial Neural Networks

open access: yesGeochemistry, Geophysics, Geosystems, 2022
Viscosity is of great importance in governing the dynamics of volcanoes, including their eruptive style. The viscosity of a volcanic melt is dominated by temperature and chemical composition, both oxides and water content.
D. Langhammer   +2 more
doaj   +1 more source

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