Results 31 to 40 of about 32,012 (272)

Comportamento de cópula de Spodoptera eridania (Walker) (Lepidoptera: Noctuidae). [PDF]

open access: yes, 2011
Pouco se conhece sobre o comportamento de cópula de Spodoptera eridania (Walker) (Lepidoptera: Noctuidae), praga que tem ganhado importância nos últimos anos em vários cultivos agrícolas. Para tanto, foram estudados 61 casais virgens, durante oito noites
BENTO, J. M. S.   +5 more
core  

Probabilistic Modeling for Prediction Errors to Enhance Balancing Market Participation of Photovoltaic Systems: Error Threshold Estimation, Multisite Aggregation, and Overloading Effects

open access: yesAdvanced Energy and Sustainability Research, EarlyView.
This study proposes a method to increase the value of solar power in balancing markets by managing prediction errors. The approach models prediction uncertainties and quantifies reserve requirements based on a probabilistic model. This enables the more reliable participation of photovoltaic plants in balancing markets across multiple sites, especially ...
Jindan Cui   +3 more
wiley   +1 more source

Theoretical Study of Some Angle Parameter Trigonometric Copulas

open access: yesModelling, 2022
Copulas are important probabilistic tools to model and interpret the correlations of measures involved in real or experimental phenomena. The versatility of these phenomena implies the need for diverse copulas.
Christophe Chesneau
doaj   +1 more source

Estimación del riesgo mediante el ajuste de cópulas [PDF]

open access: yes, 2015
El propósito de éste trabajo, es presentar una forma de cuantificar el valor en riesgo de una cartera de activos mediante dos medidas de riesgo ampliamente conocidas como lo son el VaR y el TVaR.
Bolancé Losilla, Catalina   +2 more
core  

The Challenge of Handling Structured Missingness in Integrated Data Sources

open access: yesAdvanced Intelligent Discovery, EarlyView.
As data integration becomes ever more prevalent, a new research question that emerges is how to handle missing values that will inevitably arise in these large‐scale integrated databases? This missingness can be described as structured missingness, encompassing scenarios involving multivariate missingness mechanisms and deterministic, nonrandom ...
James Jackson   +6 more
wiley   +1 more source

A pathway for multivariate analysis of ecological communities using copulas

open access: yesEcology and Evolution, 2019
We describe a new pathway for multivariate analysis of data consisting of counts of species abundances that includes two key components: copulas, to provide a flexible joint model of individual species, and dissimilarity‐based methods, to integrate ...
Marti J. Anderson   +3 more
semanticscholar   +1 more source

Valor en riesgo desde un enfoque de cópulas [PDF]

open access: yes, 2013
1 CD-ROMEl valor en riesgo VaR, es una medida que cuantifica los riesgos enfrentados por un portafolio. Entre los métodos de medición del VaR están la simulación histórica; simulación Monte Carlo; modelos paramétricos y modelos de duración y convexidad ...
Olarte Cadavid, Ana Milena   +1 more
core  

Does ESG Investing Pay off? Comparing the Performance of ESG and Traditional ETFs Across European and US Markets

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Investors have long recognized the importance of firms in promoting sustainability, leading to the rise of socially responsible investment (SRI). Specifically, there is a growing preference for exchange‐traded funds (ETFs) that prioritize environmental, social, and governance (ESG) principles.
Sandra Tenorio‐Salgueiro   +3 more
wiley   +1 more source

Una extensión del algoritmo MIMIC mediante Cópulas

open access: yesNova Scientia, 2014
Una nueva manera de modelar dependencias probabilísticas en el algoritmo de Maximización de Información Mutua mediante Clústeres de Entrada (MIMIC) es presentada.
Rogelio Salinas Gutiérrez   +2 more
doaj   +1 more source

Probabilistic hydrological drought index forecasting based on meteorological drought index using Archimedean copulas

open access: yesHydrology Research, 2019
Hydrological drought forecasting is considered a key component in water resources risk management. As sustained meteorological drought may lead to hydrological drought over time, it is conceptually feasible to capitalize on the dependency between the ...
Majid Dehghani, B. Saghafian, M. Zargar
semanticscholar   +1 more source

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