a multiobjective non _ linear programming method is used to study the optimization of joint closure temperature field for xiaowan arch da m, and the optimum joint closure temperature field of xiaowan arch dam is present ed 采用多目标非线性规划方法对小湾拱坝最优封拱温度场进行了初步的研究,给出了小湾拱坝最优的封拱温度场
when there is active power deficiency or line overloaded, linear programming method with multi dispatching strategies is applied to adjust generator output or shed load 当潮流计算结果出现线路过载或有功缺额时,采用线性规划方法,建立电力系统有功发电再调度算法,加入了各种优化目标策略,寻找调整发电机出力或者切负荷措施。
methods such as branch and bound algorithm, mixed integer programming, transportation model and separable linear programming method have been used in recently years . others are heuristic methods like genetic algorithm 近年来求解选址模型用得较多的数学优化方法有分支定界法、混合整数规划法、运输模型法、可分离线性规划法。
based on the natural conditions, land use and production situation and implementation of the valley harnessing measures in the anjiagou river basin, dingxi county, gansu province, in this study the land use types, spatial distribution mode of land use structure, costs of farming, forestry and animal husbandry and their economic returns are analyzed, the qualitative and quantitative maximum economic returns of agriculture and animal husbandry are lucubrated, and an optimized design of land use structure is carried out by using the linear programming method and developing a mathematic model under the restriction of land area, labor forces, livestock forces, social requirements and forage supply 摘要根据甘肃定西安家沟流域自然条件、土地利用状况、治理措施和生产状况,通过对土地利用的类型、结构空间分布模式以及人财物资源的输入和输出分析,以种植业和畜牧业总体最大纯经济效益最高为目标,从定性到定量,通过建立数学模型,在土地面积、劳动力、畜力、社会需求和饲料需求的约束之下,应用线性规划方法进行土地利用结构优化设计,求解最优目标解,得出优化方案。
a linear programming method of vector loop used in the analysis of mechanism motion and its error was introduced, the possibility of using the sensitivity of kinematic analysis for error was analyzed, and it was proposed for the error analysis model of the mechanism to make equivalent substitution for the dimensional error with basic kinematic joint element ( kinematic pair ) and as well to implement the linear programming method of vector loop for error analysis within the adams 摘要介绍机构运动分析与误差分析的向量环路线性规划法,分析运用运动分析灵敏度进行误差分析的可能性,提出在机构误差分析模型中用基本运动连接元素(运动副)对尺寸误差进行等价替换,使误差分析向量环路线性规划法在adams中实现。