Results 51 to 60 of about 458,857 (229)

The making of novel ecosystems: A process‐based framework for measurement, analysis and application

open access: yesMethods in Ecology and Evolution, EarlyView.
Abstract Ecological novelty is emerging rapidly due to global change drivers such as climate shifts, species introductions, defaunation, and land‐use transformation. These changes challenge how we assess, understand and manage ecosystems in the Anthropocene.
Matthew R. Kerr   +7 more
wiley   +1 more source

Hidrología de Hurst y Box Counting para el análisis de persistencia, volatilidad y en dos series de tiempo colombianas

open access: yesCuadernos Latinoamericanos de Administración, 2016
Artículo de investigación Propósito: determinar el exponente de Hurst y la dimensión fractal , de dos series de tiempo diferentes, una hidrológica y la otra financiera, con la ayuda de dos métodos que permiten establecer el grado de persistencia y ...
Edgar L. Rodríguez S.
doaj   +1 more source

Synthesizing beaver coexistence messaging with the capability, opportunity, and motivation behavior model

open access: yesConservation Biology, EarlyView.
Abstract In the western United States, conservation practitioners are increasingly working with private landowners to restore habitat for North American beavers (Castor canadensis) and to use nonlethal mitigation techniques when beavers damage crops and infrastructure.
Brian D. Erickson, Megan S. Jones
wiley   +1 more source

Pronóstico de series de tiempo con tendencia y ciclo estacional usando el modelo airline y redes neuronales artificiales

open access: yesIngeniería y Ciencia, 2012
Muchas series de tiempo con tendencia y ciclos estacionales son exitosamente modeladas y pronosticadas usando el modelo airline de Box y Jenkins; sin embargo, la presencia de no linealidades en los datos son despreciadas por este modelo. En este artículo,
J D Velásquez, C J Franco
doaj   +1 more source

Fight song: variation in singing behaviour and song structure during natural agonistic interactions in a tropical songbird, Adelaide's Warbler (Setophaga adelaidae)

open access: yesIbis, EarlyView.
Birds may use their singing behaviours and song structure as agonistic signals in territorial encounters. We conducted an observational study to test this hypothesis in male Adelaide's Warblers Setophaga adelaidae, a tropical songbird that defends a territory year‐round.
Peter C. Mower   +4 more
wiley   +1 more source

5. Series de tiempo

open access: yes, 2020
Una serie temporal es un conjunto de medidas ordenadas a lo largo del tiempo de una variable de interés. Con las series de tiempo se analiza el comportamiento histórico de una variable a través de una función matemática. Se utilizan para pronosticar; no se hace análisis estructural.
Avila Quiñones, Cristian Orlando   +1 more
openaire   +1 more source

El tratamiento de la volatilidad en series de tiempo financieras [PDF]

open access: yes, 2014
El objetivo primordial de esta investigación es el de examinar los métodos para tratar una gran variedad de datos con irregularidades que suceden en series de tiempo y en especial en aquellas referidas a la actividad financiera.
Abril, María de Las Mercedes
core   +1 more source

Seeing herbaria in a new light: leaf reflectance spectroscopy unlocks trait and classification modeling in plant biodiversity collections

open access: yesNew Phytologist, EarlyView.
Summary Reflectance spectroscopy is a rapid method for estimating traits and discriminating species. Spectral libraries from herbarium specimens represent an untapped resource for generating broad phenomic datasets across space, time, and taxa. We conducted a proof‐of‐concept study using trait data and spectra from herbarium specimens up to 179 yr old,
Dawson M. White   +6 more
wiley   +1 more source

Incidencia del análisis financiero en series de tiempo en la rentabilidad de la empresa Auto Repuestos MV durante los años 2014–2015 [PDF]

open access: yes, 2017
El presente trabajo se enfoca en el estudio e interpretación de los estados financieros mediante la aplicación del análisis en series de tiempo en una empresa del sector comercial como son los repuestos automotrices y a la vez identificar la incidencia ...
Salgado Castillo, Meyling Lisseth   +1 more
core   +3 more sources

No more fashion victim? Spillovers across multiple streams: The case of fur farming bans during the COVID‐19 pandemic

open access: yesPolicy Studies Journal, EarlyView.
Abstract Though spillovers have been initially described in the Multiple Streams Framework (MSF), we know little about how to conceptualize and measure them. To investigate spillovers, we draw on the case of fur farming bans during the COVID‐19 pandemic. Whereas fur farming has long been criticized for its animal welfare problems, with the onset of the
Anne‐Marie Parth   +3 more
wiley   +1 more source

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