Results 61 to 70 of about 30,945,589 (274)
BBR: Brazilian Business Review, 2007 Este artigo explora três modelos utilizados para a estimativa da volatilidade: suavização exponencial - EWMA, volatilidade condicional - GARCH e volatilidade estocástica - VE. A volatilidade estimada por estes modelos pode ser utilizada em uma métrica de
Fernando Caio Galdi +1 more
doaj
Gestão & Produção, 2012 Neste trabalho foram avaliados os ajustes de cinco modelos para previsão da variância, utilizando-se uma série de preços de soja, uma commodity negociada na bolsa de mercadorias de Chicago (CBOT), com dados de alta frequência. Os modelos utilizados foram
Mario Domingues Simões +3 more
doaj +1 more source
Return and Volatility Spillovers Among Major Cotton Markets
Agribusiness, EarlyView.ABSTRACT This study explores return and volatility transmission among major cotton markets. Several events have disrupted cotton supply and demand in recent years, leading to heightened price volatility and significant shifts in market interconnections.
Susmitha Kalli +3 more
wiley +1 more source
Inflación y volatilidad cambiaria en México (1969-2017)
Ensayos de Economía, 2018 Durante la década de los noventa, la economía mexicana experimentó diversos cambios en la aplicación de las políticas monetaria y cambiaria que culminaron con la implementación del esquema de metas de inflación en 2001.
Eduardo Rosas Rojas +1 more
doaj +1 more source
Weather Attention in Online Discourse and Price Uncertainty in Agricultural Futures Markets
Agribusiness, EarlyView.ABSTRACT Weather is a central determinant of production risk in agricultural markets, but markets respond not only to weather conditions themselves, but also to how those conditions are noticed, framed, and interpreted in public discourse. In this setting, real‐time online weather discussions may shape price uncertainty by influencing how market ...
Mario A. Ortez +3 more
wiley +1 more source
RAM. Revista de Administração Mackenzie, 2019 Purpose: The objective of this article is to model a minute series of exchange rates for the EUR/USD pair using the singular spectrum analysis (SSA) and ARIMA-GARCH methods and evaluate which one offers better forecasts for a five-minute horizon ...
Rafael J. Abreu +2 more
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Persistence and Kurtosis in GARCH and Stochastic Volatility Models [PDF]
, 2004 This article shows that the relationship between kurtosis, persistence of shocks to volatility, and first-order autocorrelation of squares is different in GARCH and ARSV models.
Ruiz Ortega, Esther +5 more
core +2 more sources
Advanced Intelligent Discovery, EarlyView.An AI‐assisted approach is introduced to decode synthesis–performance relationships in metal‐organic framework‐derived supercapacitor materials using Bayesian optimization and predictive modeling, streamlining the search for optimal energy storage properties.
David Gryc +8 more
wiley +1 more source
Thermally Drawn Bioelectric Catheters: Enabling Proprioceptive Endovascular Navigation
Advanced Intelligent Systems, EarlyView.This work introduces a novel bioelectric navigation system eliminates the need for harmful fluoroscopy during endovascular surgeries. A bespoke 16‐electrode catheter is fabricated using rapid thermal drawing and laser micro‐machining. Paired with a real‐time tracking algorithm fusing vascular geometry detection and distance estimation, this technology ...
Alex Ranne +8 more
wiley +1 more source
Revista de Economia e Sociologia Rural, 2019 Resumo Trabalhos recentes têm mostrado uma falta de integração entre o mercado do produtor e o varejo na cadeia produtiva da carne suína. Uma solução para amenizar esse entrave poderia ser feito por meio da estratégia de hedge dinâmico com o modelo Garch-
Jovani Patias +4 more
doaj +1 more source