Results 21 to 30 of about 707,443 (317)

Frailty and Seasonality [PDF]

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, Ambagtsheer, R. C., Beilby, J., Stewart, S.   +3 more
openaire   +4 more sources

Seasonal integration and the evolving seasonals model

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.
Hylleberg, Svend, Pagan, Adrian R.
openaire   +3 more sources

Forecasting models for seasonal rainfall for different regions of Gujarat

Journal of Agrometeorology, 2010
The large spatial variability in monsoon rainfall over India demands for regional models for predicting the seasonal rainfall. Hence, models were developed for predicting seasonal (June-September) rainfall of three regions (north, middle and south) of ...
M. C. VARSHNEYA, S. S. CHINCHORKAR, V. B. VAIDYA, VYAS PANDEY   +3 more
doaj   +1 more source

Seasonal effect in essential oil composition and antioxidant activity of Plectranthus amboinicus leaves

Bioscience Journal, 2017
In view of the increasing search for natural products with biological activities, such as essential oils are of high quality because of their therapeutic and economic importance and represent the second class of natural compounds with the largest number ...
Rita de Cássia de Freitas Bezerra, Francisco Barros de Oliveira Neto, Francisco Felipe Maia da Silva, Luciana Medeiros Bertini, Leonardo Alcântara Alves   +4 more
doaj   +1 more source

Descriptive Seasonal Adjustment by Minimizing Perturbations [PDF]

, 1982
The seasonal adjustment method proposed by Schlicht (1981) can be viewed as a method that minimizes non-stochastic deviations (perturbations). This interpretation gives rise to a critique of the seasonality criterion used there.
Schlicht, Ekkehart, Pauly, Ralf
core   +1 more source

Interannual and Seasonal Vegetation Changes and Influencing Factors in the Extra-High Mountainous Areas of Southern Tibet

Remote Sensing, 2019
The ecosystem of extra-high mountain areas is very fragile. Understanding local vegetation changes is crucial for projecting ecosystem dynamics.
Zu-Xin Ye, Wei-Ming Cheng, Zhi-Qi Zhao, Jian-Yang Guo, Hu Ding, Nan Wang   +5 more
doaj   +1 more source

Seasonal variation in health effects of particulate matter in Tianjin

环境与职业医学, 2022
BackgroundAdverse health effects associated with particulate matter have been demonstrated, but findings on seasonal variation in the health impacts are inconsistent. ObjectiveTo explore potential seasonal variation in particulate matter (PM2.5 and PM10)
Mengnan ZHANG, Yang NI, Qiang ZENG
doaj   +1 more source

Potato intercropping with soybean increased soil N2O emissions, but was alleviated by nitrogen-enhanced-efficiency techniques

Industrial Crops and Products
While intercropping improves the utilisation of spatiotemporal resources, facilitates the absorption of soil nutrients, and augments crop yield, complex rhizospheric interactions in non-cereal/legume systems can stimulate N2O emissions.
Kaihong Zhang, Dongyang Gui, Shuanglei Song, Bing Xu, Zhipeng Sha   +4 more
doaj   +1 more source

Deterministic seasonality versus seasonal fractional integration [PDF]

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

Experimental study and correction of dynamic characteristic parameters of silty clay under negative temperature conditions

Soils and Foundations
In order to examine the principles governing the variation of dynamic characteristic parameters, including the damping ratio, dynamic modulus, and frozen soil backbone curve, under different negative temperature conditions, silty clays sourced from the ...
Haotian Guo, Yuli Lin, Jinming Li, Chao Sun   +3 more
doaj   +1 more source