Results 11 to 20 of about 515,598 (363)
The 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
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Seasonality of coitus and seasonality of birth [PDF]
Demography, 1967 Resumen En todas las poblaciones estudiadas se ha observado quehay una variación estacional en la tasade natalidad. Se han adelantado muchas hipótesis para explicaresiavariación, incluyendo una variación estacional en lafrecuenciadel coiio, Se sabe que ésta relación es eierta para otros primates, peroen el hombre, no se ha documentado ...
Naomi M. Morris, J. Richard Udry
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On the Role of Seasonal Intercepts in Seasonal Cointegration [PDF]
Oxford Bulletin of Economics and Statistics, 1999 In the paper we consider the role of seasonal intercepts in seasonal cointegration analysis. For the nonseasonal unit root, such intercepts can generate a stochastic trend with a drift common to all observations. For the seasonal unit roots, however, we show that unrestricted seasonal intercepts generate trends that are different across the seasons ...
Franses, Philip Hans, Kunst, Robert M.
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Seasonal integration and the evolving seasonals model [PDF]
International 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.
Svend Hylleberg +2 more
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Geophysical Research Letters, 2023 Coral skeleton δ13C is a routinely measured indicator in modern insolation change research, but the knowledge of environmental and climatic signals recorded in its seasonality during geological time is sparse.
Hao Wang +6 more
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Seasonal variation of serotonin turnover in human cerebrospinal fluid, depressive symptoms and the role of the 5-HTTLPR. [PDF]
, 2013 Studying monoaminergic seasonality is likely to improve our understanding of neurobiological mechanisms underlying season-associated physiological and pathophysiological behavior.
Bakker, SC +16 more
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The seasonality of conception [PDF]
Demography, 2007 AbstractIndividual data on menstrual cycles of noncontracepting women living in Western countries were used in order to verify whether the biological seasonality of conception persists after sexual behavior is controlled for. Episodes of intercourse were recorded daily, and the time of ovulation was detected by a marker. We find that the seasonality of
E. Rizzi, DALLA ZUANNA, GIANPIERO
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Malaria seasonality and rainfall seasonality in Sri Lanka are correlated in space
Geospatial Health, 2008 Correlation in space between seasonality of malaria and seasonality of rainfall was studied in Sri Lanka. A simple seasonality index was developed by making use of the bimodal seasonality of both malaria and rainfall.
Olivier J.T. Briët +2 more
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Changes in rainfall seasonality pattern over India
Meteorological Applications, 2020 Rainfall seasonality over India is studied using an individual seasonality index. The spatial distribution of the individual seasonality index and the mean individual seasonality index over two periods, that is, early (1901–1970) and recent (1971–2015 ...
P. Rai, A. P. Dimri
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Cultural Tourism Weakens Seasonality: Empirical Analysis of Chinese Tourism Cities
Land, 2022 Cultural tourism is less seasonal than nature tourism. However, previous studies have mainly compared the tourist flow of scenic spots, and it is still unclear how cultural tourism affects regional tourism seasonality.
Jing Zhang +4 more
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