Results 31 to 40 of about 3,009,670 (368)

The Continuum Between Temperament and Mental Illness as Dynamical Phases and Transitions

open access: yesFrontiers in Psychiatry, 2021
The full range of biopsychosocial complexity is mind-boggling, spanning a vast range of spatiotemporal scales with complicated vertical, horizontal, and diagonal feedback interactions between contributing systems.
William Sulis
doaj   +1 more source

Koszulness, Krull Dimension and Other Properties of Graph-Related Algebras [PDF]

open access: yes, 2010
The algebra of basic covers of a graph G, denoted by \A(G), was introduced by Juergen Herzog as a suitable quotient of the vertex cover algebra. In this paper we show that if the graph is bipartite then \A(G) is a homogeneous algebra with straightening ...
Constantinescu, Alexandru   +1 more
core   +2 more sources

Spatial-temporal evolution of landscape degradation on the Guamá River Basin, Brazil

open access: yesRevista Brasileira de Ciências Ambientais, 2021
The goal of this study was to determine the anthropization evolution of the Guamá river basin in the years 2000, 2008 and 2018 by means of the Anthropic Transformation Index.
Tatiane Camila Martins Silva   +2 more
doaj   +1 more source

Multicriteria analysis for sources of renewable energy using data from remote sensing [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
Renewable energy sources are major components of the strategy to reduce harmful emissions and to replace depleting fossil energy resources. Data from remote sensing can provide information for multicriteria analysis for sources of renewable energy ...
L. Matejicek
doaj   +1 more source

Analysis of Safeness in a Petri Net–Based Specification of the Control Part of Cyber–Physical Systems

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2021
The paper proposes an algorithm for safeness verification of a Petri net-based specification of the control part of cyber-physical systems. The method involves a linear algebra technique and is based on the computation of the state machine cover of a ...
Wojnakowski Marcin   +3 more
doaj   +1 more source

Monitoring Geological Risk Areas in the City of São Paulo Based on Multi-Temporal High-Resolution 3D Models

open access: yesRemote Sensing, 2023
This paper presents a multi-temporal comparison of high-resolution 3D digital models from two urban areas susceptible to landslides in three time periods. The study areas belong to the São Paulo landslide risk mapping database and are named “CEU Paz” (CP)
Amanda Mendes de Sousa   +3 more
doaj   +1 more source

Covering Numbers for Simple Algebraic Groups

open access: yesVietnam Journal of Mathematics, 2023
AbstractLet G be a simple algebraic group over an algebraically closed field, and let C be a noncentral conjugacy class of G. The covering number cn(G,C) is defined to be the minimal k such that G = Ck, where Ck = {c1c2⋯ck : ci ∈ C}. We prove that $cn(G,C) \le c \frac {\dim G}{\dim C}$ c n (
Liebeck, M, Simion, I
openaire   +3 more sources

Spatio-temporal evaluation of ecosystem services in the São Paulo Macrometropolis, Brazil

open access: yesRevista Brasileira de Ciências Ambientais, 2023
Urbanization is one of the key factors that drive changes in ecosystem services. Although various studies have analyzed relationships between land-cover change and ecosystem services degradation, few have explored the impacts in future scenarios in mega ...
Priscila Ikematsu   +1 more
doaj   +1 more source

The pivotal cover and Frobenius-Schur indicators [PDF]

open access: yes, 2015
In this paper, we introduce the notion of the pivotal cover $\mathcal{C}^{\mathsf{piv}}$ of a left rigid monoidal category $\mathcal{C}$ to develop a theoretical foundation for the theory of Frobenius-Schur (FS) indicators in "non-pivotal" settings.
Shimizu, Kenichi
core   +1 more source

Conflicts and future scenarios of land use in eastern Mexico

open access: yesForest Systems, 2022
Aim of study: To develop an analytical framework for analyzing and assessing the land-use changes and conflicts, based on low requirements of information and useful in developing countries.
Gabriel Chablé-Rodríguez   +4 more
doaj   +1 more source

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