Results 91 to 100 of about 2,942,043 (344)

Multiple Response Variables Regression Models in R: The mcglm Package

open access: yesJournal of Statistical Software, 2018
This article describes the R package mcglm implemented for fitting multivariate covariance generalized linear models (McGLMs). McGLMs provide a general statistical modeling framework for normal and non-normal multivariate data analysis, designed to ...
Wagner Hugo Bonat
doaj   +1 more source

Analysis of cultural ecosystem services of rock climbing settings in Mexico City: the case of Los Dinamos Recreational Park

open access: yesEcosystems and People, 2021
The evaluation of cultural ecosystem services based on the exploration of social values (SV) is a powerful tool to describe visitors’ perceptions of a natural landscape.
Barbara Kovács   +4 more
doaj   +1 more source

A Thread Algebra with Multi-Level Strategic Interleaving

open access: yesTheory of Computing Systems, 2005
In a previous paper we developed an algebraic theory about threads and a form of concurrency where some deterministic interleaving strategy determines how threads that exist concurrently are interleaved.
J. Bergstra, K. Middelburg
semanticscholar   +1 more source

Quadric surface bundles over surfaces and stable rationality

open access: yes, 2018
We prove a general specialization theorem which implies stable irrationality for a wide class of quadric surface bundles over rational surfaces. As an application, we solve with the exception of two cases, the stable rationality problem for any very ...
Schreieder, Stefan
core   +1 more source

Relational Supersymmetry via the Dressing Field Method and Matter‐Interaction Supergeometric Framework

open access: yesAnnalen der Physik, EarlyView.
Applications of the Dressing Field Method are reviewed and further expanded to the very foundations of the supersymmetric framework, where it allows to build relational supersymmetric field theory. Furthermore, a novel approach is proposed giving a unified description of fermionic matter fields and bosonic gauge fields: a Matter‐Interaction ...
Jordan François, L. Ravera
wiley   +1 more source

Low‐Energy Atomic Scattering: S‐Wave Relation Between the Interaction Potential and the Phase Shift

open access: yesAnnalen der Physik, EarlyView.
The validity of the on‐shell approximation for s‐wave scattering is examined across one, two, and three dimensions using exactly solvable model interaction potentials. By comparing exact and approximate s‐wave components of the interaction potential, the analysis reveals that the approximation improves with increasing momentum and decreasing ...
Francesco Lorenzi, Luca Salasnich
wiley   +1 more source

Full‐order observer design for quadratic port‐controlled Hamiltonian systems

open access: yesAsian Journal of Control, EarlyView.
Abstract The full‐order observer design problem for a particular class of port‐controlled Hamiltonian systems is approached in this paper. The proposed full‐order observer scheme belongs to the structure preserving class of dynamic estimators as it preserves the natural stability properties of the approached class of systems that are useful for the ...
Michael Rojas   +2 more
wiley   +1 more source

AN APPROACH TO ALLEVIATE THE FALSE ALARM IN BUILDING CHANGE DETECTION FROM URBAN VHR IMAGE [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Building change detection from very-high-resolution (VHR) urban remote sensing image frequently encounter the challenge of serious false alarm caused by different illumination or viewing angles in bi-temporal images.
J. Chen, J. L. Hou, M. Deng
doaj   +1 more source

Separable algebras and covering spaces

open access: yesMATHEMATICA SCANDINAVICA, 2000
Let \(B\) be a commutative semisimple Banach algebra and let \(\Delta_B\) be its maximal ideal space. The question of relating topological invariants of \(\Delta_B\) to algebraic invariants of \(B\) has attained much interest since the early days of commutative Banach algebras, starting with Shilov's idempotent theorem which identifies \(H^0(\Delta_B, \
openaire   +2 more sources

Covering Morphisms in Categories of Relational Algebras [PDF]

open access: yesApplied Categorical Structures, 2013
In this paper we use Janelidze’s approach to the classical theory of topological coverings via categorical Galois theory to study coverings in categories of relational algebras. Moreover, we present characterizations of effective descent morphisms in the categories of M-ordered sets and of multi-ordered sets.
M. M. Clementino, D. Hofmann, A. Montoli
openaire   +4 more sources

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