BACKGROUND In Vietnam, dengue fever (DF) is still a leading cause of hospitalization. The main objective of this study was to evaluate the seasonality and association with climate factors (temperature and precipitation) on the incidences of DF in four provinces where the highest incidence rates were observed from 1994 to 2013 in Vietnam. METHODS Incidence rates (per 100,000) were calculated o...

Precipitation prediction is an important technical mean for flood and drought disaster early warning, rational utilization, the development of water resources. Complementary ensemble empirical mode decomposition (CEEMD) can effectively reduce aliasing white noise interference; extreme learning machines (ELM) predict non-stationary data quickly easily; fruit fly optimization algorithm (FFOA) has...

according to general circulation model (gcm), zonal thermal belts are 1- inter-tropical convergence zones (itcz) around eqator; 2- sub tropical high (sth) belt around 30 degree latitude; 3- sub polar low (spl) belt around high latitudes. the belt of inter-tropical convergence zone (itcz) displaces in meridional path, about 5° over the oceans and up to 40° over continents, during the seasons of ...

a prediction of maximum monthly rainfall is indispensable for management of agriculture and for management of water resources. previous studies have demonstrated that see surface temperatures affect rainfall in their surrounding regions. in this study the relationship between sea surface temperatures of persian gulf and that of red sea, and maximum monthly rainfalls recorded at illam meteorolog...