首先建立万安水库长期发电优化调度模型并求解，通过对优化结果统计分析，获得水库各旬（或月）最优调度函数（规则），作为指导该时段水库调度的依据。在此基础上，分别考虑面临时段无预报时入库径流服从P2III总体分布和有预报时预报误差服从正态分布两种情况。通过随机模拟计算，获得了时段末水库蓄水目标和发电目标不能实现的概率。实例研究表明:优化模型与随机模拟相结合，为水库发电调度的风险分析提出了一种新途径。

The microst ructural features of clacium-rare earth (Ca-RE) fluorocarbonate minerals f rom Southwest China were studied by using selected area elect ron diff raction (SAED) and high resolution transmission elect ron microscopy (HRTEM). Three new regularly mixed2layer st ruc-tures of B8S6 type with long period and different stacking sequence, i.e.B8S62 Ⅰ, B8S62 Ⅱ, andB8S6 2Ⅲ, were found in the derived polycrystal of parisite, in which their st ructural symmet ry, cell parameters, chemical formulas of crystal and stacking models of st ructural unit layer, etc. were determined. The result s of this study also show that these new regularly mixed2layer st ruc-t rues were formed by order stacking unit layer of bastnaesite (B) and synchisite (S) in varying pro-portion along c axis. The observation under HRTEM reveals that in the three new regularly mixed-layer st ructures there are different dist ribution modes of Ce2F ion layers, CO2-3 ion groups between the Ce2F ion layers, and CO2-3ion groups between Ce2F and Ca2+ion layers, and there are some heterogeneous textures, such as disorder interlayer and stacking fault. It further proves the complexity of the crystal st ructure of the Ca2RE fluorocarbonate minerals.

建立了梯级水库在洪水期间发电调度的优化模型，由于含有河道洪水演进方程，该模型成为一类有后效性的动态规划模型。提出了两种新的解法——多维动态规划近似解法与有后效性动态规划逐次逼近算法。实例研究表明:这两种解法可行，结果合理，特别是逐次逼近算法计算更快速，是求解这类问题的有效的方法。

建立了梯级水库防洪调度优化模型，采用马斯京干方程模拟梯级水库间洪水流动，模型是一类有后效性的动态规划模型。讨论了相应的解法，提出了一种简化多维动态规划递推解法。实例计算表明，模型合理，能给出有价值的结果，提出的方法快速可行，是一种新的有效的解决这类问题的方法。