优值

Outburst measures;to expose coal;drill field drilling design;minimum control;optimal parameters of evaluation

防突措施；揭煤；钻场钻孔设计；最小控制范围；最优求值参数

The experimental result indicates 2-D Entropy Method of Image Segmentation Based on Chaotic Particle Swarm Optimization algorithm reduces the searching time significantly enhances the convergency factor.

实验结果表明了基于混沌粒子群优化算法的二维熵图像分割法用于阈值寻优减少了搜索时间，提高了收敛率。

Compared with the exchange and mutation operation in genetic algorithm ,crossover operation becomes helpless when adaptive value of most individules in demes have little difference.The algorithm falls into local solution and can't be solved by exchange. Although mutation can make it shake off local convergence and jump out of local solution, denteric mutation may destroy the produced module that is constructive to form the optimal solution.

相比遗传算法中的交换和变异操作，当种群的多数个体适应值相差不大时交叉操作就显得无能为力，算法陷入局部解而不能由交换解决，突然变异能够使之摆脱局部收敛而跃出局部解，但是后期的变异可能破坏已产生的对形成最优解有建设性作用的模块。

The optimum conditions are as follows:with 70% ethanol as eluant, working solution pH 6, and series selecting AB-8 resin column for purification. Then, reasonable yield and high product purity can be obtained.

实验结果表明，洗脱剂乙醇的体积分数为70%、上样液pH值为6时，采用AB-8大孔吸附树脂串联柱对山楂总三萜酸进行纯化效果最优，产品的纯度较高。

In the second chapter, the stabilities of periodic regular gaits for six-legged robots walking longitudinally and laterally were systematically studied respectively, employing a hexpod's geometric model with outward extension of middle legs. Major progress and achievements reached are: a Both the necessary and the sufficient conditions for static walking of hexapods were established theoretically. b A generalized optimization method of gait stability was investigated. c For all feasible duty factor, stability-optimal gaits were obtained, with the expressions being of wide adaptation.

第二章系统分析研究了轴对称六足步行机器人在&中腿行程外置模型&下沿两个运动主方向运动时周期规则步态的稳定性及步态规划问题，主要取得以下三方面新的进展：（1）从理论上建立了六足步行机静态稳定的必要性定理和充分性定理；（2）探索了步态稳定性计算机择优的一般方法；（3）对于所有可能的有荷因数取值，从理论上证明静态稳定性最优步态的存在，并得到具有相当普遍意义的统一表达式。

The cultural conditions are optimized as follows: cultural temperature is 28℃, shaking table revolution is 220r/min; the recruitment of Zn(superscript 2+) is 600mg/L in culture medium; the inoculums size was 10%, the initial pH value was 6.0; the cultural time is 60 hours.

对培养条件进行了优化，确定了最优培养条件为培养温度28℃、摇床转速220r/min、培养基锌添加量600mg/L、接种量体积分数为10%、培养起始pH值为6.0、培养时间60h。

In the first chapter, we used the method of majoring sequences to studied the convergences of Newton s methods of " reducing the counting of derivative" and "without inversing of derivative under weak conditions".

在第一章中，用优序列方法研究了减少导映照计值次数和避免导映照求逆的牛顿迭代在弱条件下的收敛性。

The result indicates the wheels dont lock on every road surface, as shows the ability of avoiding the wheel locking. The values of slide ratio approach and revolve round the best slide ratio constantly, which indicates this method utilizes the character of pavement thoroughly, and the braking efficiency is excellent.

结果表明在各种路面车轮几乎没有抱死，显示了自寻优避免车轮抱死的能力；滑移率的值基本上一直接近并围绕最佳滑移率变化，说明该方法充分利用了路面性能，制动性能较好；制动力矩及制动力随着路面条件的变化自动做出相应调整，实现了路面自动识别功能。

The frequency and amplitude of wake force were deduced theoretically, while the influence of stator sector distribution and stator vane quantity on the wake force of vane was also discussed. Transient analysis was conducted for the forcing response of rotor blades under the same stator sector distribution and different quantities of stator vane, so an optimum asymmetry stator mistuned design was developed.

对不对称静子叶片非谐情况下激振力频率幅值进行推导，讨论了静子扇区分布和静叶数目选取对尾流激振力的影响，并对相同扇区分布不同静叶数目情况下转子叶片的强迫响应进行瞬态分析，给出不对称静子非谐设计的最优方案。

Super-frame structure with 2 base frames and 4 interpolate frames is used, the LPC coefficients of interpolate frames is quantized with 4 stages residual matrix quantization based on optimal 1-order linear prediction. In the decoder, a closed loop estimation of the impulse magnitude is proposed to improve the naturalness of speech and the articulation of nasals.

插值帧的线性预测参数采用基于闭环最优一阶线性预测的4阶段残差矩阵量化；在解码端，提出了闭环的激励脉冲幅度估计方法，提高了合成语音的自然度与鼻音音节的清晰度。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。