Results 141 to 150 of about 5,693,969 (321)

Análisis de series temporales financieras: modelización ARIMA

open access: yes, 2022
[eng] This document evaluates the series of maximum weekly prices of the IBEX-35 with the aim of formulating an appropriate time series model to capture the behavior of that series and, in turn, offer optimal predictions. For the development of the analysis, first, the formal aspects of the ARIMA modeling are exposed. Then, the scheme to follow for the
openaire   +1 more source

Domain Wall Rebounds Driven by Competing Entropic and Spin‐Transfer Torques in Cylindrical Nanowires

open access: yesAdvanced Functional Materials, EarlyView.
Domain‐wall motion in cylindrical magnetic nanowires driven by nanosecond current pulses. Low current densities efficiently displace domain walls, whereas higher currents cause rebound at the wire ends. The effect results from the interplay between spin‐transfer torque and thermally induced processes, highlighting the role of thermal gradients in ...
Elias Saugar   +11 more
wiley   +1 more source

El proyecto EMECAM: discusión de los resultados en las ciudades participantes

open access: yesRevista Española de Salud Pública, 1999
En este artículo se comparan y discuten los resultados obtenidos en los análisis locales de las 14 ciudades participantes en el proyecto EMECAM. Se analizan las series temporales de mortalidad, contaminantes (partículas en suspensión, SO2, NO2, O3 y CO),
Ballester Díez Ferran   +14 more
doaj  

Estudio Biomecanico de la Zancada. 7.52 Record de España de 60 MV de Jackson Quiñonez. [PDF]

open access: yes, 2009
Los resultados que a continuación se presentan hacen referencia al Record de España de 60 metros vallas (en adelante, mv) conseguido por el atleta Jackson Quiñonez (JQ) en la final del 44º Campeonato de España de pista cubierta - Valencia 08. Estos datos
González Frutos, Pablo   +3 more
core   +1 more source

Modelos neuronales para pronóstico de series temporales

open access: yes, 2023
Este trabajo de fin de máster se centra en una revisión detallada de diversos modelos neuronales, con especial atención a las arquitecturas basadas en transformers aplicadas al pronóstico de series temporales (forecasting). Aunque estos modelos han demostrado su eficacia en campos como el procesamiento de lenguaje natural y la visión artificial, su ...
openaire   +1 more source

Designing Asymmetric Memristive Behavior in Proton Mixed Conductors for Neuromorphic Applications

open access: yesAdvanced Functional Materials, EarlyView.
Protonic devices that couple ionic and electronic transport are demonstrated as bioinspired neuromorphic elements. The devices exhibit rubber‐like asymmetric memristive behavior with slow voltage‐driven conductance increase and rapid relaxation, enabling simplified read–write operation.
Nada H. A. Besisa   +6 more
wiley   +1 more source

Using SOMbrero for clustering and visualizing complex data [PDF]

open access: yes, 2017
Over the years, the self-organizing map (SOM) algorithm was proven to be a powerful and convenient tool for clustering and visualizing data. While the original algorithm had been initially designed for numerical vectors, the available data in the ...
Oteanu, Madalina
core  

Ultrastable Photoactive Halide Perovskite Nanocrystal‐Sensitized SnO2 Nanorods for Room‐Temperature NO2 Detection

open access: yesAdvanced Functional Materials, EarlyView.
ABSTRACT Metal oxide (MOx)‐based NO2 gas sensors typically require high temperatures or ultraviolet light, limiting their practical use. To enable visible‐light activation at room temperature, efficient and stable photosensitizers should be integrated with nanostructured MOx hosts.
Yeonji Yuk   +10 more
wiley   +1 more source

Comparación de tres métodos alternativos para el análisis de series temporales interrumpidas [PDF]

open access: yes
Se examina el comportamiento de tres técnicas de análisis de diseños de series temporales interrumpidas: el modelo correctamente identificado, el enfoque de la transformación general y un enfoque alternativo propuesto por Escudero y Vallejo (1999).
Escudero García, José Ramón   +1 more
core  

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