Results 21 to 30 of about 143,683 (316)

A simple method for defining malaria seasonality. [PDF]

open access: yes, 2009
BACKGROUND: There is currently no standard way of defining malaria seasonality, resulting in a wide range of definitions reported in the literature. Malaria cases show seasonal peaks in most endemic settings, and the choice and timing for optimal malaria
Roca-Feltrer, Arantxa   +3 more
core   +1 more source

Seasonality of the feeding behavior and condition factor of Anchovia surinamensis in the floodplains of the Madeira River (Rondônia, Brazil)*

open access: yesBoletim do Instituto de Pesca, 2022
The Anchovia surinamensis (Clupeiformes: Engraulidae) is known in Brazil as “sardinha-do-gato” and exists in the floodplains throughout Latin-America. It is highly appreciated by the Amazonian riverine communities as a source of animal protein.
Raniere Garcez Costa SOUSA   +3 more
doaj   +1 more source

Frailty and Seasonality [PDF]

open access: yesThe Journal of nutrition, health and aging, 2020
Frailty in older adults is a complex condition in which only a minor external stressor may cause severe complications leading to death. In the context of the recent devastating bushfires in Australia and the worldwide COVID-19 pandemic, recognising and protecting those affected has magnified the impact and public health importance of frailty.
Dent, Elsa   +3 more
openaire   +4 more sources

Seasonal integration and the evolving seasonals model

open access: yesInternational Journal of Forecasting, 1997
Abstract The paper uses a model of seasonality popular in the 1960s, the evolving seasonals model, to explore issues relating to testing for unit roots in seasonal time series. The model is used to show how data can be transformed in such a way that tests for seasonal integration simply become those for regular unit roots.
Hylleberg, Svend, Pagan, Adrian R.
openaire   +3 more sources

Autoregression as a means of assessing the strength of seasonality in a time series

open access: yesPopulation Health Metrics, 2003
Background The study of the seasonal variation of disease is receiving increasing attention from health researchers. Available statistical tests for seasonality typically indicate the presence or absence of statistically significant seasonality but do ...
Upshur Ross EG   +3 more
doaj   +1 more source

Female gender but not season of birth is associated with mood seasonality in a near-equatorial Brazilian city

open access: yesJornal Brasileiro de Psiquiatria, 2012
OBJECTIVE: Studies conducted mainly in countries located in the Northern Hemisphere have shown that season of birth influences mood seasonality. Greater mood seasonality has been observed for individuals born during spring/summer months than those born ...
Taciano L. Milfont   +4 more
doaj   +1 more source

Seasonality of tuberculosis in the Republic of Korea, 2006-2016 [PDF]

open access: yesEpidemiology and Health, 2018
OBJECTIVES While the seasonality of notified tuberculosis has been identified in several populations, there is not a descriptive epidemiological study on the seasonality of tuberculosis in Korea.
Eun Hee Kim, Jong-Myon Bae
doaj   +1 more source

The complex transmission seasonality of hand, foot, and mouth disease and its driving factors

open access: yesBMC Infectious Diseases, 2019
Background The transmission rate seasonality is an important index for transmission dynamics in many childhood infections, and has been widely studied in industrialized countries. However, it has been neglected in the study of pathogens in China. Methods
Jijun Zhao, Xiangyu Hu
doaj   +1 more source

Exponential smoothing for intermittent demand with demand basis updated more frequently than seasonality factors

open access: yesGestão & Produção, 2019
This study aims to present an alternative technique of exponential smoothing to estimate the demand for items with intermittent and seasonal demand. The usual technique would aggregate demand periods (months in quarters, for instance) to calculate a ...
Jorge Luiz de Biazzi
doaj   +1 more source

Deterministic seasonality versus seasonal fractional integration [PDF]

open access: yesJournal of Statistical Planning and Inference, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +6 more sources

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