查询词典 optimal

This problem can be solved easily by optimizing each parameter independently—set the elevation to an arbitrary value and rotate the dish to its optimal azimuth, then rotate the dish to its optimal elevation without changing the azimuth.

这个问题可能由优选容易地解决各个参量独立设置了海拔对任意价值和转动盘对它优选的方位角，然后转动盘对它优选的海拔没有改变方位角。

His book is mathematically demanding, but it boils down to a few key concepts: there is an optimal f for every trade; if you bet less, your risk decreases arithmetically while profit decreases geometrically; if you keep betting more than the optimal f, you are guaranteed to go broke.

他的书用了很多数学计算，但最终总结为以下几点：每笔交易都有完美的 f；如果你赌的少，风险是数字式的减少而利润是几何级的减少；如果你投入的比最完美的 f 多，你肯定会破产。

The result demonstrates accent of true and false in 34 AD 34, inside diaphragm 27, the haematoma inside the wall interlining of model of 7;27 exemple is three-dimensional into resemble all showing clear crevasse, crevasse of aorta bend ministry with arrowy shape show optimal, fall aorta crevasse shows with position of axle and coronal shape optimal, VRT shows pathological changes whole journey is clearer, but reach to crevasse inside the indication of diaphragm reachs position of axle as MIP, MPR.

结果34例AD中显示真假腔34例，内膜片27例，壁内血肿7例；27例典型夹层三维成像均显示明确破口，主动脉弓部破口以矢状位显示最佳，降主动脉破口以轴位及冠状显示最佳，VRT显示病变全程较清楚，但对破口及内膜片的显示不如MIP、MPR及轴位。

Though comparing Canny operator and center B spline dyadic wavelet, the following conclusion is proven in this dissertation: a Center B spline function has tight support and Canny operator hasn't. b Center B spline function asymptotic convergence to Gaussian function and the derivative of Center B spline function asymptotic convergence to Canny operator. c The derivative of fourth order center spline B function is more suitable as a optimal edge detector than Canny operator. d Center B spline function can balance the smoothing and approximation of original data, and the fourth center B spline function is the only optimal solution of two order smoothing problem. e The error between the valve of time-frequency uncertainty of the fourth center B spline function and the lower bound of time-frequency uncertainty does not exceed 0.143% of the lower bound. f The derivative of center spline B function can construct a stability dyadic wavelet and can give a fast algorithm for multiscale edge detection, but Canny operator can do neither.

作者给出了Canny算子与中心B样条二进小波严格的比较证明，得出如下结论：a中心B样条函数具有紧支集，Canny算子不具有紧支集。b中心B样条函数的极限收敛于高斯函数，中心B样条函数的导数收敛于Canny算子。c四阶中心B样条函数的导数比Canny算子更接近最佳边缘检测滤波器。d中心B样条函数比高斯函数更能兼顾对原函数平滑和逼近的折中要求，并且四阶中心B样条函数是二阶逼近问题的唯一最优解。e四阶中心B样条函数的时频测不准关系值与时频测不准关系下界的逼近误差不超过0.143％。f中心B样条函数的导数可以构成稳定的二进小波，存在快速的多尺度算法；而Canny算子不构成稳定的二进小波，无法给出快速的多尺度算法。

Firstly, the multi-user detector that relatively integrity in theory and proximal to optimal multi-user detector is discussed and Decor elating Detector, Minimum Mean Square Error Detector, Optimal linear Detector together with the multi-capability indexes output energy, SNR, bit error rate, asymptotic efficiency, convergence etc.

本文首先对理论上及性能上接近最佳多用户检测的次最佳多用户检测进行理论研究，计算并分析了解相关检测器、最小均方误差检测器、最佳线性检测器的性能指标(输出能量、信噪比、渐近有效性、误码率以及收敛特性等)。

By investigating the convexity, monotonicity and asymptotic behaviour of the optimal value function, it is shown that the optimal policy is of simple hedging point structure and featured by several hedging points.

通过研究最优值函数的凸性、单调性和渐近性，证明了最优策略具有简单的阈值结构且被几个阈值参数完全刻画。

The results showed that the optimal press is 19～65 kPa and the optimal interval of backwash is 25 min.

该装置在运行压力为19~85 kPa，反冲洗间隔为25 min的条件下连续运行。

The results show that in order to obtain optimal propagation results, the optimal pH is 7.0, the temperature is 28℃, the carbon source in culture medium is corn, the nitrogen source culture medium is barm.

结果表明：pH值7.0，温度28℃最适合HDF01的生长。培养基中以玉米粉为碳源，酵母粉为氮源，加入微量元素Mn及雄生素B6，HDF01的产孢量最高。

Also, following the digital processing of these logs, the optimal discrimination functions for determination of different types of bioherm reservoirs are presented by means of optimal partition , cluster and regression methods.

利用岩心和测井数据总结了生物礁各种类型的测井响应，提出了适合柴西地区生物礁储集层的测井曲线特徵。

The general form of solution for the non symmetric matrix A is given, the expression of optimal approximation solution is presented, and an algorithm for solving the problem is described. The total least squares problem with symmetric and bisymmetry constraints is discussed respectively. A sufficient condition for existence of solution is derived by use of the theory of matrix Ricaati equation. The general form of solution is given if the problem has a solution, and the expression of optimal approximation solution is presented. Some numerical examples are given.

对矩阵A是非对称情形，给出了解的一般表达式，证明了最佳逼近问题解的存在唯一性，并给出了其解的表达式，描述了求解问题的算法；讨论了带对称和双对称约束的总体最小二乘问题，利用Ricaati矩阵方程的理论得到了解存在的一个充分条件，分别对对称矩阵和双对称矩阵两种情形，给出了解的一般表达式，证明了最佳逼近问题解的存在唯一性，给出了其解的表达式，提出了求解这些问题的算法，并给出了数值例子。

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。