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According to disadvantage of AS that the speed low of convergentiss and easily entering the stagnation,improving the AS in some aspect by the way that importing pheromone windows that the value of pheromone cannot exceed the window,only deposit the pheromone on the edge that belongs to the iteration shortest solution path,releasing additional pheromone to the edge belongs to the so-far shortest solution path,judging the situation of convergent and to reinitialize pheromone,optimizing the solutions by local search procedure at the end of every iteration,modifying the transition probability by add some problem specific parameters and so on.

本文主要运用蚁群优化算法(Ant Colony Optimization,ACO)来求解VRP。针对蚁群算法收敛性比较差,易于停滞的缺陷,通过使用信息素窗口限制、信息素的最大最小值,只更新信息素迭代中最好解,增加了精英的蚂蚁,信息素重新初始化之前先判断出汇聚情况,在每次迭代过程中加入局部的搜索进行优化,在对蚁群算法进行了优化时考虑选择概率当中加入与问题的相关参数等措施,从而使蚁群算法的收敛性得到大大提高,避免了算法的停滞现象。

The 5'coding region of its eDNA was optimized according to the codon bias of Pichia pastoris to make it secretively express in Pichia pastoris with higher performance. Two-step DNA synthsis was used to synthesize the eDNA sequence being optimized of ADTZ. OPT-ADTZ was connected with constitutive plasmid pGAPZaA to construct the reecombinant plasmid pNOA. pNOA was linearized and then transformed into Pichia pastoris GS115. Then codonoptimized ADTZ was constitutively and secretively expressed in Pichia pastoris.

为了使重组蛋白rADTZ能在毕氏酵母中高效分泌表达,根据毕氏酵母密码子的偏好性对rADTZ的5'末端的编码区域进行了优化,利用two-stepDNAsynthsis技术合成出ADTZ优化的基因序列OPT-ADTZ,并与组成型表达载体pGAPZaA连接,构建重组质粒pNOA,线性化pNOA后转化至毕氏酵母GS115中,实现了密码子优化的rADTZ组成型分泌表达。

There is an exact description about process control by hybrid hierarchical way, and a hybrid model by HPN delaminating modeling.

其次,提出一种基于Petri网理论对混杂系统进行优化控制的EA-HPN混合优化控制方法,在监控层中调用EA优化决策模块,使HPN分层递阶建模方法和先进算法的优点相结合。

We also propose program optimization technologies: removing integer DIV and MOD, upraising common code for reducing the complex array subscription effectively.

为此本文进一步研究了数据变换和重构手段,提出通过直接扩展数组范围、构造松弛数组范围和循环扭曲变换等技术,使数据变换后的数据规模尽量小;同时,通过采用整数模和整数除消除优化技术、代码上提优化等程序优化技术,简化了数组下标表示,有效地减少了数组下标计算开销。

These results optimize project investment valuation, and form an all-covering system of theories, optimization standards and procedures, and correlation among them.

这些成果使项目投资评价和优化,从理论到优化标准以及与之关联的优化方法及其方法之间的关联性形成一个完整的体系。

A numerical model for calculating geometric parameters of the insert pocket on a boring cutting tool with indexable inserts is presented using the constraint optimization approach offered by ANSYS.

采用ANSYS的约束优化方法,建立了可转位镗刀刀片槽几何参数优化计算的数值模型,使用该模型可得到在给定切削条件下满足设计要求并使镗刀前角值为最大而主偏角值为最小的镗刀刀片槽加工所需的几何参数;最后给出了优化计算实例。

The structure parameters of the Hourglass rubber spring have been optimized for fulfilling the optimum nonlinear stiffness curve. The optimization result indicated that Using of rubber spring with optimum nonlinear elasticity character resulted in good and constant ride comfort of the truck.

以此曲线为优化目标,完成了新型悬架橡胶弹簧结构参数优化;优化后的橡胶悬架系统能使车辆具有良好的平顺性和稳定性。

For a variety of hybrid flexible flowshop process route of the problem of production scheduling, analysis of production process planning and shop scheduling system integration principle, set up the target model, by a simple genetic algorithm to improve, in the integrated model set up based on the algorithm research, put the post-evolutionary genetic algorithm and improved simulated annealing algorithm an organic combination of algorithm optimization mechanism to enable the integration and optimization of the structure complement each other to form a more efficient hybrid optimization algorithm, and to solve the problem.

针对混合柔性流水车间多种工艺路线的生产调度问题,分析了生产工艺计划与车间调度系统的集成原理,建立目标模型,通过将简单遗传算法加以改进,在建立集成模型的基础上,对算法进行研究,把进化后的遗传算法和改进的模拟退火算法有机结合,使算法优化机制融合和优化结构互补,形成较为高效的混合优化算法,并对问题进行求解。

Fuzzy optimization design of worm gear in new type valve actuator;2. Fuzzy optimization method was applied to design the worm gear in valve actuator.

将模糊优化设计方法应用于电动装置的蜗杆传动设计,建立了模糊优化数学模型,并对其求解方法进行了详细的说明,通过实例表明模糊优化设计可以使蜗杆传动更加符合客观实际,从而进一步减小电动装置的体积,提高电动装置的效率。

By the use of finite element method and through the analysis of stress field in the frame structure of shaving board foming machine this paper carried out an op-timal design of this frame sturcture by adopting a mode of di-mension and shape functions,thus give the structure a full play on the mechanical propersties of its material under the catalogue of optimization searching of lowest weight.

刨花板成型机机框结构有限元分析及优化设计汤文成,易红,葛巧琴摘要通过有限元方法对刨花板成型机机框结构的应力场分析,采用尺寸和形状函数方式对其进行优化设计,使结构在重量最轻的寻优目录下充分发挥其材料的机械性能。关键词有限元方法,优化设计Opti

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It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐

The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.

血精的原因很,以良性病变为主。