中学校园公共空间夜间光环境调研与改善策略

校园公共空间作为师生交流、休闲和活动的开放性场所,既是校园人文环境的重要载体,也是校园自然环境的重要组成。其中,光环境作为校园夜间整体环境的组成部分,在营造良好教学环境、保障学生身心健康、提高校园空间品质等方面具有重要作用。文章以重庆一中校园为例,通过对校园公共空间夜间光环境的现状及主观问卷调研,汇总分析了当前中学校园公共空间光环境存在的问题及成因,并提出了光环境改善策略,为中学校园夜间光环境设计及改善提供了参考依据。     

多产品间歇过程的分层次在线调度--一种数学规划与遗传算法的混合算法

In this contribution we present an online scheduling algorithm for a real world multiproduct batch plant. The overall mixed integer nonlinear programming (MINLP) problem is hierarchically structured into a mixed integer linear programming (MILP) problem first and then a reduced dimensional MINLP problem, which are optimized by mathematical programming (MP) and genetic algorithm (GA) respectively. The basis idea relies on combining MP with GA to exploit their complementary capacity. The key features of the hierarchical model are explained and illustrated with some real world cases from the multiproduct batch plants.