查询词典 optimal

Optimal screw path length: The distance from the optimal entrancepoint to the optimal vent point Screw tail distance: The distance between left and right optimalentrance point Transverse section angle: Half of the included angle between left andright optimal screw Sagital section angle: The average of angle between both side optimalscrew with the upper terminal plate 1.2.2 Modify the threshold of CT value to distinguish the rear partof the lumbar, Observate the the optimal entrance point and the adjustable range.

1.2.2三维重建观察螺钉最佳进钉点的位置和各方向螺钉进钉点关系，调整CT值下限阈值使椎弓后部结构尽量显示清晰，以利观察。 1.3统计方法本实验采用SPSS13.0统计软件。对同一椎体左右两侧椎弓根螺钉相对数据行计量资料配对样本t检验，对男女组间相关数据行计量资料独立样本t检验，对男女组内不同腰椎节段间相关数据行单向方差分析及不同腰椎节段间LSD法多重比较。

In the last chapter,we study the control problems of the distributedparameter system governed by a class of higher order pseudohyperbolicequation related to the symmetric regularized long wave equation.we havediscussed the controllability and optimal control problems.we have obtainedcompatibility condition of the constraint when the state is controllable,therepresentation of the optimal control for both the time optimal control problemand the optimal control problem of minimum energy type,and the equationsatisfied by the minimum time.we have shown that the optimal control belongsto the boundary of the admissible control set.

在第六章中，我们研究了与对称正则长波方程相关的一类高阶拟双曲型方程支配的分布参数系统的控制问题。讨论了系统的状态能控性问题和最优控制问题，给出了状态能控时的约束相容性条件，给出了最速控制问题、最小能量型最优控制问题的最优控制表达式和最速时间所满足的方程式，证明了最优控制属于控制集合的边界。

For the aim of saving energy and optimizing control of chilled systems, the performance of VWV systems and characteristics of control systems were analyzed based on the simulation. According to the characteristic of the monitored parameters and controlled variables in VWV systems, three online optimal control strategies were proposed and validated:(1) Optimal strategy for on/off control of chillers according to the ratio of secondary flow rate to primary flow rate.(2) Optimal strategy for the control of secondary pump according to value positions of auto-controlled AHU vales. And (3) Optimal strategy for supply chilled water temperature control of chillers according to valve positions of auto-controlled AHU valves and working status of secondary pump.

为达到节能和优化系统控制的目的，在楼宇空调水系统及其局部控制仿真分析的基础上，针对变流量系统监测点和可调参数较多的特点，提出并验证了3个实时优化控制方案：根据初级和二级冷谋水流量的比率，实时优化多台冷水机组的启／停控制；利用AHU自动控制水阀的阀位信息，实时优化二级水泵的控制；利用AHU自动控制水阀的阀位信息以及二级泵的工作状况，实时优化冷水机组出水温度的控制。

Optimal algorithm of combined nonlinear Hopfield network appears powerful validity in solving nonlinear planning, which includes nonlinear objective function, linear constrains and high-demension of decision-making variants, for its ability of nonlinear parallel computation. It is prominent among optimal algorithms because of its function of simply implement with electrocircuit hardware. Genetic algorithm is expressly suitable for optimal calculation regarding the planning of massive, highly nonlinear, inconsecutively differentiable and multiobjective function as well as objective function without analytical expression. However, it inclines to prematurity, as well as its limitation in ability of partial optimal search. Introducing the optimal algorithm of niche genetic simulated annealing to standard Genetic algorithm, can therefore improve the full-scale or partial search ability of Genetic algorithm effectively. It has a far-flung perspective in the field of systemic planning of water pollution control.

组合式非线性Hopfield网络优化算法所具有的非线性大规模并行计算能力在求解具有非线性目标函数、线性约束条件及高维决策变量的非线性规划问题方面显示出了强大的生命力，它易于电路硬件实现的功能更是在优化算法中独树一帜；遗传算法采用概率搜索技术，不受目标函数与约束条件的限制，特别适合大规模、高度非线性的不连续可微的多峰目标函数及无解析表达式的目标函数的规划问题的优化计算，但其存在容易早熟、局部寻优能力较差等缺点，本文在标准遗传算法中引入小生境技术及模拟退火算法有效地改善遗传算法的全局和局部搜索性能，提高了全局最优解的寻优质量，小生境遗传退火模拟优化算法在水污染控制系统规划中的应用前景极为广阔。

In order to get anti-noise and good localization image edges, a new fuzzy multi-scale edge detection algorithm is presented in this paper. Firstly, multiple edge images under different scales are acquired by the optimal linear filter for Demigny's criteria.

工业技术能源与动力工程模糊多尺度边缘检测方法的研究与应用硕士边缘检测；最优滤波器；平滑滤波器；模糊多尺度； edge detection；optimal filter；smooth filter；fuzzy multi-scale；为了获取抗噪性强、定位准确的边缘，本文提出了模糊多尺度边缘检测算法。

On this basis, according to historical data, apply ANN and differential simulation method to get the quantitatively correlative relations between each production and its own influence factors, and introduce the new methods of prediction for dynamic indexes with gas-field development (The combinatorial prediction method based on fuzzy comprehensive evaluation, the method of ANN to select optimally combinatorial prediction models and the ANN prediction method based on genetic algorithm).(2) Base on mathematical programming, combine with quantitative economics and techno-economics, introduce economical indexes to establish production"s distribution optimal model, production"s constitution optimal model and measured production"s constitution optimal model, including multi-objective models and five-years models. Upon this, the optimal project for all gas field and each gas-collected factory can be got. Also, introduce the time value of capitals to improve on these models.(3) Base on the optimal solution theory and algorithm theory for the nonlinear programming problem, introduce the SUMT algorithm and genetic algorithm to study how to solve the models, and on the basis of normal genetic algorithm, make use of auto-adaptively modulating method to improve on normal genetic algorithm; Base on algorithm"s convergence theory and calculation"s complexity theory to analyze seriatim SUMT algorithm"s convergence and genetic algorithms convergence, and compare performance with each other.

在此基础上，利用神经网络方法和微分模拟方法根据历史数据得到各分项产量与其影响因素之间的定量关联关系，并引入气田开发动态指标新的预测方法(基于模糊综合评判的组合预测方法、神经网络优选组合预测模型预测方法以及基于遗传优化的神经网络预测方法)；(2)以数学规划为基础，结合数量经济学和技术经济学，引入经济指标建立产量分配优化模型、产量构成优化模型、措施产量构成优化模型、气田开发多目标规划模型以及五年规划模型，进而获得全气田及各采气厂的最优方案，并引入资金时间价值对五年规划模型进行改进；(3)以非线性规划问题的最优解及算法理论为基础，引入SUMT算法以及遗传算法对模型的求解进行研究，并在原有的遗传算法基础上，引入自适应调整方法对遗传算法进行改进；以算法的收敛性理论和计算复杂性理论为基础，逐一分析SUMT算法以及遗传算法的收敛性，并比较三种算法的优劣性。

The fluctuation of available wireless link bandwidth motivates the study of adaptive multimedia services in wireless/mobile networks This paper focusses on a bandwidth adaptation scheme, which takes the maximum revenue as the objective The optimal bandwidth adaptation algorithm which seeks to achieve maximum revenue is an NP hard problem, because it has to investigate every adaptation case A bandwidth adaptation scheme based on genetic algorithm is proposed, which achieves near optimal total revenue with much less complexity compared to an optimal bandwidth adaptation algorithm Simulation is carried out to compare the algorithm with an optimal bandwidth adaptation algorithm, the results reveal that the genetic algorithm approximates the optimal solution very well

无线链路带宽的快速波动推动了无线/移动网络中对适应的多媒体服务的研究以无线网络系统的利润最大化为目标，研究适应的多媒体应用的带宽适应方案达到利润最大化的最优带宽适应算法是一个NP hard问题提出一个基于遗传算法的带宽适应方案，在算法复杂度大大低于最优算法的同时，获得的利润值近似最优性能分析和实验结果证明了这一结论1 引言因特网和无线/移动通信技术的迅速发展，推动了两者服务的融合无线/移动环境下因特网服务的提供需要解决的一个关键问题是QoS保证提供QoS保证的一个重要技术手段是连接接纳控制 [1] CAC算法的目标是在保证切换连接请求丢弃率满足系

Based on the study on the traveling salesman problem, in this dissertation, some results on the solving of production scheduling problem using the neural networks are described, which includes the following main parts: l The method which was put forward by Hopfield－Tank of solving the traveling salesman problem is analyzed, and the drawbacks of the method are pointed out. The interlinks between optimal tours and city distribution in the clustering and divide and conquer method are analyzed. A parallel network algorithm on the problem of the traveling salesman problem is presented.

主要包括以下几个方面的内容： 1对Hopfield和Tank提出的解决旅行商问题的方法做了分析和研究，指出该方法的严重不足；对于用聚类方法和各个击破的思想解旅行商问题，分析了最优路径与城市分布之间的几个关系；提出了一个解决旅行商问题的并行网络算法，由这一算法得到的解是&or-optimal&路径。

For the auto mentioned in the paper, we analyze and establish the dynamic equations under different power systems, respectively discuss the system efficiency of HEV under the conditions of whether the storage battery power is zero or not, utilize the SQP to compute the corresponding optimal decelerating rate and optimal storage battery power under the conditions of different speeds, different demand torsions and different storage battery SOC; then use the optimal computation results to summarize the rules of auto optimal control, provide the foundations for the optimal control rules in the future.

对于本车，分析并建立了在不同动力系统工作模式下的动力学方程；分别讨论了当蓄电池功率为零和蓄电池功率不为零两种情况下的HEV的系统效率；利用序列二次规划法来求解出在不同车速、不同汽车需求转矩和不同蓄电池SOC情况下对应的最佳减速比和最佳蓄电池功率；利用优化计算结果，初步总结了一些车辆优化控制规则，为将来更好的优化控制规则提供了依据。

In order to evaluate the solution quality obtained by algorithm SB and compare its resulting backbone set with the optimal one, we devise an algorithm OOB (standing for Obtaining Optimal Backbones) to obtain the optimal solution.

为了评估演算法SB所得到的结果，我们设计了一个演算法OOB（全名为Obtaining Optimal Backbones）来得到最佳解。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。