对球体图元的装箱问题直接给出光滑的优化模型，依据变分分析的最优性理论建立了最优性必要条件。
As to the problem of packing balls, a smooth model is given and the corresponding optimality conditions are established by the optimality theory of variational analysis.
很难相信，时间已跨入21世纪，而我们仍在讨论着海盗。但对于船舶来讲，包括油轮和集装箱运货船，公海强盗仍是个很大的问题。
It's hard to believe that it's the 21st Century and we're still talking about pirates, but high-seas bandits are a big problem for ships, including oil tankers and container ships.
某些装箱问题是NP完全的，但可以通过动态规划法或近似最优的启发式解法来解决。
Some bin packing problems are NP-complete but are amenable to dynamic programming solutions or to approximately optimal heuristic solutions.
应用推荐