Results 41 to 50 of about 48,631 (201)

A New Algebraic Approach to Decision Making in a Railway Interlocking System Based on Preprocess

open access: yesMathematical Problems in Engineering, Volume 2018, Issue 1, 2018., 2018
The safety of railway networks is a very important issue. Roughly speaking, it can be split into safety along lines and safety of railway facilities such as stations, junctions, yards, etc. In modern networks the safety along lines is controlled by automatic block systems that do not give clearance to trains to enter a section (block) until the latter ...
Antonio Hernando   +3 more
wiley   +1 more source

Rede de sensores wireless com topologia Mesh utilizando protocolo ZigBee

open access: yes, 2020
Wireless sensor networks have been applied extensively in home and industrial automation. The objective of this project is to develop a wireless sensor network with Mesh topology using the ZigBee protocol.
Gilberto de Melo Júnior   +5 more
semanticscholar   +1 more source

O território, visto por outros olhos

open access: yesRevista de Antropologia, 2015
Em relatos míticos e na praxe dos Yaminawa do Acre — desde há muito tempo caraterizados como “problema” pela sua difícil inserção no sistema territorial indígena que os converte em indesejados moradores da cidade —, procuram-se os traços de uma ...
Oscar Calavia Sáez
doaj   +1 more source

When topology triggers a phase transition

open access: yes, 2005
Two mathematical mechanisms, responsible for the generation of a thermodynamic singularity, are individuated. For a class of short-range, confining potentials, a topology change in some family of configuration space submanifolds is the only possible such
Angelani   +10 more
core   +1 more source

On Integral Manifolds for Leibniz Algebras

open access: yesAlgebra, Volume 2014, Issue 1, 2014., 2014
We discuss several partial solutions to the so‐called “coquecigrue problem” of Loday; these solutions parallel, but also generalize in several directions, the classical Lie group‐Lie algebra correspondence. Our study highlights some clear similarities between the split and nonsplit cases and leads us to a general unifying scheme that provides an answer
Juan Monterde, Fausto Ongay, Pu Zhang
wiley   +1 more source

DIGEST uno standard di interscambio per dati geografici digitali

open access: yesGEOmedia, 2016
DIGEST uno standard di interscambio per dati geografici ...
Pierre J.C. Beaulieu   +2 more
doaj   +2 more sources

Dall’aletheia al topos: Ontologia della precarietà in M. Heidegger e G. Vilar

open access: yesCoSMO, 2015
Il trentennio che separa la stesura del saggio su L’origine dell’opera d’arte (1936) e il seminario su L’arte e lo spazio (1969) segna un’evoluzione del pensiero di Martin Heidegger che non tocca soltanto l’estetica, ma più complessivamente le coordinate
Alberto Martinengo
doaj   +1 more source

Smooth Approximation of Lipschitz Functions on Finsler Manifolds

open access: yesJournal of Function Spaces, Volume 2013, Issue 1, 2013., 2013
We study the smooth approximation of Lipschitz functions on Finsler manifolds, keeping control on the corresponding Lipschitz constants. We prove that, given a Lipschitz function f : M → ℝ defined on a connected, second countable Finsler manifold M, for each positive continuous function ε : M → (0, ∞) and each r > 0, there exists a C1‐smooth Lipschitz ...
M. I. Garrido   +3 more
wiley   +1 more source

On some properties of the asymptotic Samuel function

open access: yesMathematische Nachrichten, Volume 298, Issue 7, Page 2401-2423, July 2025.
Abstract The asymptotic Samuel function generalizes to arbitrary rings the usual order function of a regular local ring. Here, we explore some natural properties in the context of excellent, equidimensional rings containing a field. In addition, we establish some results regarding the Samuel slope of a local ring.
A. Bravo, S. Encinas, J. Guillán‐Rial
wiley   +1 more source

Quasicoincidence for intuitionistic fuzzy points

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2005, Issue 10, Page 1539-1542, 2005., 2005
The introduction of intuitionistic fuzzy sets is due to K. T. Atanassov, who also proposed some problems about this subject. D. Çoker defined the intuitionistic fuzzy topological spaces and, with some coworkers, studied these spaces. In this paper, we define and study the notion of quasicoincidence for intuitionistic fuzzy points and obtain a ...
Francisco Gallego Lupiáñez
wiley   +1 more source

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