PREDICTING OF ELDERLY POPULATION STRUCTURE AND DENSITY BY A NOVEL GREY FRACTIONAL-ORDER MODEL WITH THETA RESIDUAL OPTIMIZATION: A CASE STUDY OF SHANGHAI CITY, CHINA

Predicting of elderly population structure and density by a novel grey fractional-order model with theta residual optimization: a case study of Shanghai City, China

Abstract Background Accurately predicting the future development trend of population aging is conducive to accelerating the development of the elderly care industry.This study constructed a combined optimization grey prediction model to predict the structure and density of elderly population.Methods In this paper, a GT-FGM model is proposed, which

read more


What are the proteolytic enzymes of honey and what they do tell us? A fingerprint analysis by 2-D zymography of unifloral honeys.

Honey is a sweet and healthy food bondi 2 seater sofa produced by honeybees (Apis mellifera L.) from flower nectars.Using bidimensional zymography, we have detected the, until now unrevealed, proteolytic activities present in row honey samples.The resulting zymograms were specific for each type of the four unifloral honey under study, and enzymes w

read more

Lightweight Hash-Based Authentication Protocol for Smart Grids

Smart grids integrate information and communications technology into the processes of electricity production, transportation, and consumption, thereby enabling interactions between power suppliers and consumers to increase the efficiency of the power grid.To achieve this, smart meters (SMs) are installed in households or buildings to measure electr

read more