Results 51 to 60 of about 64,539,124 (222)
Ingeniería 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
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, 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
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World Food Policy, Volume 12, Issue 2, November 2026.ABSTRACT Household food expenditure continues to be a key factor in ensuring the realization of the Human Right to Adequate Food. Particularly in Brazil, access to food can be limited by economic constraints in vulnerable families, especially among farming families, who have been more vulnerable to food insecurity in recent years in the country.
Lucas de Almeida Moura +3 more
wiley +1 more source
Analysis of dynamic common factors in the presence of autocorrelated noise-processes
, 2020 This thesis presents a procedure to build a dynamic factor model in the presence of orthogonal stationary noise-processes. The procedure is based on the Peña-Box model (Peña & Box, 1987), in which the number of observed time series is fixed, and in the ...
Bolívar Atuesta, Stevenson
core
World Food Policy, Volume 12, Issue 2, November 2026.ABSTRACT Agricultural development initiatives in sub‐Saharan Africa have emphasized improved crop varieties as a pathway to food security, resilience, and rural poverty reduction. However, empirical evidence often focuses narrowly on plot‐level outcomes and overlooks whole‐farm effects and the substantial heterogeneity in farmers' management practices,
Kodjo Kondo +4 more
wiley +1 more source
Prospectiva, 2020 El objetivo de este artículo es estudiar el funcionamiento de una potabilizadora (PTAP) mediante un análisis de series de tiempo de parámetros fisicoquímicos del agua tratada.
Edgardo Redondo-Peñuela +2 more
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New Phytologist, Volume 252, Issue 3, Page 1296-1313, November 2026.The MexMAGIC population mixes native maize varieties from across Mexico to study functional genetic diversity. Summary Defining the genetic basis of local adaptation is a key goal of evolutionary biology and crop improvement. Theory predicts that when selective pressures follow differences in the environment, a cline will be established.
Sergio Perez‐Limón +18 more
wiley +1 more source
Pronóstico de series de tiempo con ciclo y tendencia usando redes neuronales artificiales [PDF]
, 2016 El pronóstico de series de tiempo con ciclo y tendencia ha sido un problema vigente durante las últimas décadas en la literatura, este usualmente ha sido abordado mediante métodos clásicos como los modelos SARIMA y métodos más novedosos como las redes ...
Valencia Carmona, Jenny Elizabeth
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World Affairs, Volume 189, Issue 4, Winter 2026.ABSTRACT Anchored on the sustainable development goals (SDGs) and the Paris Agreement, which seek to limit the global average temperature to well below 2°C above pre‐industrial levels and pursue efforts to limit the temperature to 1.5°C, this study investigates how green energy finance and environmental taxes affect environmental quality, with an ...
Mohammed Musah +4 more
wiley +1 more source
Métodos modernos de series de tiempo y sus aplicaciones
RInCE: Revista de Investigaciones del Departamento de Ciencias Económicas, 2019 La presente investigación se centra en presentar y aplicar por medio de ejemplos, técnicas propias y en algunos casos inéditas del análisis de series de tiempo aplicadas a un conjunto de datos.Es necesario destacar que esta área del saber tuvo sin duda un crecimiento explosivo durante las últimas décadas.
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