查询词典 optimization

The dissertation recommends some kinds of methods and measures: such as adjusting the network configuration, connecting value and threshold value by the total value of all stylebooks, adding part of the adjusting value of the last time to the current adjusting value, transforming the stylebooks to standard value, optimizing activation function, appending threshold value to the putout of the nerve cell and so on. Simultaneity, the author brings forward a new method to optimize the model of artificial neural network . It is using the automatically adaptive genetic algorithm to make the network configuration, connecting value and threshold value of artificial neural network better. The method can make the model better and improve the simulating effect and forecasting precision.Genetic algorithm is an arithmetic based on evolution and genetics used to search the optimization .

本文针对人工神经网络应用中存在的上述问题，介绍了各种改进方法与措施：如用所有样本的总效果对网络权值矩阵和阈值向量进行调整、调整量中加入动量项、标准化训练样本数据、优化激励函数以及给神经元的输出值添加偏置量等；同时还提出了一种新的优化人工神经网络模型的方法，即采用自适应遗传算法对人工神经网络模型的网络结构和权值阈值进行全局优化搜索，以提高大坝安全监测人工神经网络模型的拟合成果和预测精度。

A detailed three-dimensional solid model of the piston is established by means of Ansys 11.0 Workbench Environment, which is issued in March 2007. Using the third thermal boundary conditions, analysis of the three-dimensional piston, including temperature, displacement and thermal stress field are performed by means of thermal-structural coupling. Structural optimization is also accomplished and a new piston has been designed, which performance is getting improved.

本文在2007年3月发布的Ansys 11.0协同仿真环境中建立了详细的活塞三维实体模型，运用第三类热边界条件，结合热耦合分析方法完成了活塞的三维温度场，位移场及热应力场的仿真，在此基础上对活塞的结构优化进行了探索，并设计出一款性能得以改善的活塞，实现了真正意义上的仿真驱动产品设计。

The optimization design problem of reducing planet gear box in big power inverted umbrella aeration machine has been solved.

本文通过对遗传算法的研究，构造了大功率倒伞曝气机行星减速齿轮箱的数学模型，通过编码的方法对其轮系的离散变量、整型变量进行了寻优设计，解决了大功率倒伞曝气机行星齿轮优化设计的问

Finally, the optimal structure designing methods are introduced and the topological optimization method is adopted to optimize the structure of clutch plate hub and clamping disk. The result is that mass of the two parts are less to cut down the cost of production and that provide the reference for the later design.

更多原因最后，介绍了结构优化设计的方法，并采用拓扑优化方法在原有模型的基础上对离合器的从动盘毂和加持盘进行了结构优化，减轻了质量，降低了生产成本，为从动盘毂和夹持盘的设计提供了理论上的参考。

In this paper,the raft is approximated by a thin plate with regular shape at first.Then the floating raft system is divided into several subsystems,such as plate raft,elastic foundation,etc,which are respectively modeled by four-parameter net method.After that,dynamic absorber and active absorber are put into a uniform frame to obtain the model of plate raft subsystem coupling with them.At last,according to the force and velocity relationship among each subsystem\'s interfaces,the entire plate floating raft system is modeled by subsystem structural admittance synthesis method.As the main structure of floating raft system is elastic,it is inevitably to study the optimization of actuators\' mounting positions before designing control law.In this paper,two new criterions are proposed for it.

本文首先将浮筏的中间筏架用一个规则形状的薄板近似；然后再将浮筏系统分解成若干个子系统，如板式筏架子系统、弹性基础子系统等，运用四端参数网络建立了它们的动力学传递方程，传递特性由导纳矩阵描述；接着，将动力吸振器和主动吸振器的(来源：ABC90论文00网www.abclunwen.com)分析统一于一个框架内，获得了与吸振器耦合的板式筏架子系统的动力学传递特性；最后，根据各子系统在各界面上的作用力和速度的相互关系，通过子系统结构导纳综合方法获得了整个板式浮筏系统的动力学传递方程，并在此基础上获得了系统的力传递函数模型。

You should focus on making software well-factored and well-designed, then go through performance optimization driven by profilers.

你应该首先专心于让软件结构合理、设计清晰，然后，在性能调优器的引导下，完成性能优化过程。

Using its integrated set of performance and debugging profilers, AQtime collects crucial performance and memory/resource allocation information at runtime and delivers it to you both in summarized and detailed forms, with all of the tools you need to begin the optimization process.

通过AQTime无可匹敌的报告系统和测试分析架构，开发这不仅可以得知其项目中确实存在bug和瓶颈，而且会知道具体到哪个模块、类、线程、代码行出了问题，从而快速消除错误。

College of Life Science, Wuhan University, Wuhan 430072On the basis of optimization of in situ RNA hybridization technique, Westudied the temporal and spatial expression of calmodulin and phosphorylasemRNA and its relation with fertilization and embryogenesis in rice as well as antherdevelopment in tabacco. We also constructed cDNA libraries of proembryos anddifferentiating young embryos in rice using microscopic isolation and RT-PCRtechniques.

本文在优化RNA原位杂交技术的基础上，研究了钙调素mRNA和磷酸化酶mRNA时空表达及其与水稻受精和胚胎发生以及烟草花药发育的关系；利用显微分离技术和RT-PCR技术建立了水稻原胚和分化幼胚cDNA文库。

Meanwhile, the design of primers and optimization of the LAMP method system were studied.

同时对引物设计及体系优化进行了研究。

Besides, the goal of saving energy by 50% and corresponding prescripts in Design Standard for Energy Efficiency of Public Buildings (GB 50189-2005), also put forward request on energy-efficient retrofit and optimization to air-conditioning systems in existing public buildings.

同时，《公共建筑节能设计标准》（ GB 50189-2005）中节能50％的目标和相关规定，也对既有公建空调系统的节能改造和优化工作提出了要求。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。