With the increasing proportion of the logistics industry in the economy, the study of Mirrors the vehicle routing problem has practical significance for economic development.Based on the vehicle routing problem (VRP), the customer presence probability data are introduced as an uncertain random parameter, and the VRP model of uncertain customers is
Senescence is an irreversible process by which cells enter to a permanent cell cycle arrest with generalized molecular changes.Senescent cells remain metabolically active and most of them show a secretory phenotype; through its secretion may induce senescence or cancer in other cells.The secretory cells in the so-called transient senescence Graveur
Diapause is a common dormancy strategy exhibited by many species of invertebrates and insects to temporarily avoid seasonally recurring unfavourable conditions for their development, most usually in winter.Less frequently, a prolonged diapause lasting two or more years is described in species living in unpredictable environments where it is adaptiv
In this paper, the inter-provincial panel data of 30 provinces (excluding Xizang) from 2006 to 2017 are selected, the adjustment of the mining industry structure is taken as the explained variable, Basketball - Balls and the command type environmental regulation, technological innovation, foreign direct investment, enterprise access, mineral resour