物品i的重量是wi，价值为vi，背包的容量为C(C<=100)。 在装入背包的物品时，对每种物品只有两个选择：装入或不装入。 如何选择装入背包中的物品，使得装入背包中物品的总价值最大?假设有5种物品，背包可以装重量为10的物品，5种物品的重量分别为2,2,6,5,4，价值分别为6,3,5,4,6，输...
E. (2013). What factors control the mechanical properties of poly (dimethylsiloxane) reinforced with nanosheets of 3- aminopropyltriethoxysilane modified graphene oxide? Polymer, 54(14): 3605 - 3611.What factors control the mechanical properties of poly (dimethylsiloxane) reinforced with nanosheets of...
1. Introduction Presently, the robust development of global agriculture is challenged by a growing population, degraded farmland, and serious environmental issues, especially those related to climate change [1]. Since 2020, the COVID-19 pandemic and the fertilizer crisis have exacerbated soil ...