This study determined the effect of larval density-dependent competition for food on development and adult fitness in Sesamia nonagriodes Lef.(Lepidoptera: Noctuidae).Different numbers (5, 10, 15, 20 and 30 individuals) of larvae of the pink stalk borer were reared on a constant amount of food.Although crowding during the immature stages did not si
Based on the China City Commercial Credit Environment Index (CEI), a more scientific spatial DID model was used to examine the long-term impact of the opening of ports and trading in the late Qing Dynasty on the urban commercial credit environment, taking cities above the prefecture level in the Yangtze River Delta as a sample.The study confirms th
Software-defined networking makes forwarding devices easier to manage and provides centralized control.Because of the centralization, a network administrator can programme the devices cheaply.Network administrators make attempts to convert their entire network into SDN-compatible switches.A good balance of SDN and legacy switching functions can lea