Listar MA - Artículos por fecha de publicación
Mostrando ítems 21-40 de 67
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Chains in evolution algebras
(ELSEVIER, 2021-08-01)In this work we approach three-dimensional evolution algebras from certain constructions performed on two-dimensional algebras. More precisely, we provide four different constructions producing three-dimensional evolution ... -
A discrete-time queueing system with three different strategies
(Elsevier, 2021-09)We consider a discrete-time Geo/G/1/inf system in which a customer that finishes its first essential service may opt to abandon the system, to receive a second optional service or to go at the head of the queue in order ... -
Inverse optimization with kernel regression: Application to the power forecasting and bidding of a fleet of electric vehicles
(Elsevier, 2021-10)This paper considers an aggregator of Electric Vehicles (EVs) who aims to learn the aggregate power of his/her fleet while also participating in the electricity market. The proposed approach is based on a data-driven inverse ... -
Distributionally robust stochastic programs with side information based on trimmings
(Springer, 2021-11)We consider stochastic programs conditional on some covariate information, where the only knowledge of the possible relationship between the uncertain parameters and the covariates is reduced to a finite data sample of ... -
SMIS: A Stepwise Multiple Integration Solver Using a CAS.
(MDPI, 2021-11-11)Multiple Integration is a very important topic in different applications in Engineering and other Sciences. Using numerical software to get an approximation to the solution is a normal procedure. Another approach is working ... -
Sojourn Times in a Queueing System with Breakdowns and General Retrial Times.
(MDPI, 2021-11-12)This paper centers on a discrete-time retrial queue where the server experiences breakdowns and repairs when arriving customers may opt to follow a discipline of a last-come, first-served (LCFS)-type or to join the orbit. ... -
Parameterized Simplification Logic: Reasoning With Implications in an Automated Way
(IEEE, 2022)In this sequel to our previous article (Cordero et al., 2020) on general inference systems for reasoning with if–then dependencies, we study transformations of if–then rules to semantically equivalent collections of if–then ... -
A high dimensional functional time series approach to evolution outlier detection for grouped smart meters
(Taylor and Francis, 2022-01-01)Smart metering infrastructures collect data almost continuously in the form of fine-grained long time series. These massive data series often have common daily patterns that are repeated between similar days or seasons and ... -
Cost-driven screening of network constraints for the unit commitment problem
(The Institute of Electrical and Electronics Engineers (IEEE), 2022-03-16)In an attempt to speed up the solution of the unit commitment (UC) problem, both machine-learning and optimization-based methods have been proposed to lighten the full UC formulation by removing as many superfluous line-flow ... -
Quasi-closed elements in fuzzy posets
(ELSEVIER, 2022-04)We generalize the notion of quasi-closed element to fuzzy posets in two stages: First, in the crisp style in which each element in a given universe either is quasi-closed or not. Second, in the graded style by defining ... -
On projection methods for functional time series forecasting
(ScienceDirect, 2022-05)Two nonparametric methods are presented for forecasting functional time series (FTS). The FTS we observe is a curve at a discrete-time point. We address both one-step-ahead forecasting and dynamic updating. Dynamic updating ... -
Conformal Vector Fields and Null Hypersurfaces
(Springer, 2022-05-03)We give conditions for a conformal vector field to be tangent to a null hypersurface. We particularize to two important cases: a Killing vector field and a closed and conformal vector field. In the first case, we obtain a ... -
Kitainik axioms do not characterize the class of inclusion measures based on contrapositive fuzzy implications
(Elsevier, 2022-05-17)In this short communication, we refute the conjecture by Fodor and Yager from [5] that the class of inclusion measures proposed by Kitainik coincides with that of inclusion measures based on contrapositive fuzzy implications. ... -
Smart Sensorization Using Propositional Dynamic Logic
(IOAP-MPDI, 2022-05-20)The current high energy prices pose a serious challenge, especially in the domestic economy. In this respect, one of the main problems is obtaining domestic hot water. For this reason, this article develops a heating system ... -
Fuzzy closure relations
(Elsevier, 2022-05-25)The concept of closure operator is key in several branches of mathematics. In this paper, closure operators are extended to relational structures, more specifically to fuzzy relations in the framework of complete fuzzy ... -
Too Many Males or Too Many Females? Classroom Sex Ratio, Life History Strategies and Risk-Taking Behaviors
(Springer, 2022-06-01)Prior research finds that sex ratio, defined as the proportion of males and females in a given context, is related to engagement in risk-taking behaviors. However, most research operationalizes sex ratio at a local context ... -
Inner Ideals of Real Simple Lie Algebras
(Springer, 2022-07-18)A classification up to automorphism of the inner ideals of the real finite-dimensional simple Lie algebras is given, jointly with precise descriptions in the case of the exceptional Lie algebras. -
Fuzzy closure systems: Motivation, definition and properties
(Elsevier, 2022-09)The aim of this paper is to extend closure systems from being crisp sets with certain fuzzy properties to proper fuzzy sets. The presentation of the paper shows a thorough discussion on the different alternatives that ... -
Rigidity results for complete spacelike submanifolds in plane fronted waves
(Springer, 2022-09-08)New rigidity results for complete non-compact spacelike submanifolds of arbitrary codimension in plane fronted waves are obtained. Under appropriate assumptions, we prove that a complete spacelike submanifold in these ... -
A general vertical decomposition of Euler equations: Multilayer-moment models
(Elsevier, 2022-09-13)In this work, we present a general framework for vertical discretizations of Euler equations. It generalizes the usual moment and multilayer models and allows to obtain a family of multilayer-moment models. It considers a ...