Results 81 to 90 of about 15,833 (150)

Otra forma de evaluar: Análisis de resultados.

open access: yesRect@, 2007
Desde el curso 2002-2003 se viene aplicando en la asignatura de Matemáticas de primer curso de la Diplomatura de Ciencias Empresariales en la Universidad Pablo de Olavide un método de evaluación especial (llamado Plan de Calidad) debido al elevado número
Segovia González, Mª Manuela   +1 more
doaj  

Bidiagonal Decompositions and High‐Accuracy Computations for Newton Collocation Matrices

open access: yesNumerical Linear Algebra with Applications, Volume 33, Issue 4, August 2026.
ABSTRACT We consider a class of collocation matrices A$$ A $$ associated with the Newton basis of the space of polynomials of degree at most n$$ n $$, evaluated at a set of l+1≥n+1$$ l+1\ge n+1 $$ nodes. In the most general setting, we allow n$$ n $$ of these nodes to either coincide with or differ from those defining the Newton basis.
E. Mainar, A. Marco, B. Rubio, R. Viaña
wiley   +1 more source

Bianchi I Spacetimes in f(Q)‐Gravity

open access: yesFortschritte der Physik, Volume 74, Issue 8, August 2026.
ABSTRACT The Kasner spacetimes are exact solutions that are self‐similar and of significant interest because they can describe the dynamic evolution of kinematic variables near the singularity of the Mixmaster universe. The chaotic behavior of the Mixmaster universe is related to the Kasner relations.
Andronikos Paliathanasis, Genly Leon
wiley   +1 more source

Screening for brain‐related comorbidities in Duchenne muscular dystrophy: Construction, reliability, and validity of the BIND screener

open access: yesDevelopmental Medicine &Child Neurology, Volume 68, Issue 8, Page 1080-1096, August 2026.
The Brain Involvement iN Dystrophinopathies (BIND) screener is an 18‐item questionnaire with strong reliability and validity for identifying potential brain‐related comorbidities in Duchenne muscular dystrophy. It allows rapid, cross‐age and cross‐country screening for both clinical and research purposes, demonstrating good sensitivity and specificity.
Ruben Miranda   +46 more
wiley   +1 more source

The Use of Technology in Teaching and Learning of Mathematics in the Experimental University of the Armed Forces, Core Sucre

open access: yesSantiago, 2016
The lack of updating and training of teachers in the use of information technology and communications (ICT) as a teaching and learning of mathematics, have limited its methodological work, causing poor performance in the integral learning students and ...
Odiber Zudegsa Olivier-Rodríguez   +1 more
doaj  

Kazdan–Warner obstructions for a fourth‐order boundary problem

open access: yesBulletin of the London Mathematical Society, Volume 58, Issue 8, August 2026.
Abstract We derive Kazdan–Warner type identities for the boundary problem of prescribing nonconstant interior Q$Q$ curvature and boundary T$T$ curvature on the upper hemisphere S+4${\mathbb {S}}^{4}_{+}$ by a conformal change of the standard metric.
Sergio Cruz‐Blázquez   +1 more
wiley   +1 more source

High Relative Accuracy Computations With Covariance Matrices of Order Statistics

open access: yesMathematical Methods in the Applied Sciences, Volume 49, Issue 11, Page 11794-11810, 30 July 2026.
ABSTRACT In many statistical applications, numerical computations with covariance matrices need to be performed. The error made when performing such numerical computations increases with the condition number of the covariance matrix, which is related to the number of variables and the strength of the correlation between the variables. In a recent work,
Juan Baz   +3 more
wiley   +1 more source

Weak Solutions for a Class of Nonlocal Singular Problems Over the Nehari Manifold

open access: yesMathematical Methods in the Applied Sciences, Volume 49, Issue 11, Page 12360-12378, 30 July 2026.
ABSTRACT In this paper, we consider a nonlocal model of dilatant non‐Newtonian fluid with a Dirichlet boundary condition. By using the Nehari manifold and fibering map methods, we obtain the existence of at least two weak solutions, with sign information.
Zhenfeng Zhang   +2 more
wiley   +1 more source

Random Chemostats with Competition and Different Kinetics to Investigate the Growth of the Gut Microbiome

open access: yesMathematical Methods in the Applied Sciences, Volume 49, Issue 11, Page 12102-12115, 30 July 2026.
ABSTRACT We investigate some chemostat models incorporating wall growth, competition, random fluctuations on the dilution rate, and different consumption functions (Monod and Haldane). We analyze the asymptotic behavior of the solutions of the corresponding random differential systems to establish conditions on the model parameters under which the ...
Javier López‐de‐la‐Cruz   +2 more
wiley   +1 more source

Mean‐Variance Payoff Applied to Stackelberg Games

open access: yesMathematical Methods in the Applied Sciences, Volume 49, Issue 10, Page 11516-11533, 15 July 2026.
ABSTRACT We analyse a Stackelberg duopoly in which the leader faces uncertainty about the intercept demand, while the follower observes the realised demand and decides whether to enter the market after the uncertainty is resolved. The leader evaluates the uncertainty by maximising a mean‐variance utility function that captures its risk aversion.
João M. Silva   +3 more
wiley   +1 more source

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