查询词典 lower class

To the discrete-time systems, we introduce a new discrete-time norm, the algorithm given is not depend upon the initial data. For a class of uncertain discrete-time systems, we also adopt the method of iterative learning control, we convert the problem of learning control into a global stability of trivial solution for lower triangular matrix dynamic systems, and obtain the result of tracking to desired state of the system.

对于一般非线性离散系统，引进了离散的范数，所给的算法不依赖于学习控制算法中的初始数据，对于一类不确定离散系统的状态跟踪问题，我们也采用迭代学习控制的方法，将相应的学习控制问题转化为一个下三角动力系统的平凡解全局稳定性问题，获得了对系统理想状态的跟踪结果，并对所给的算法的收敛性进行了分析。

The train tracks are helping to spur consumer spending, with Beijing residents traveling as far as 120 kilometers to shop in places like Tianjin, where prices are lower. The $8.50 one-way trip takes less than 30 minutes, attracting many middle-class passengers who see the bus—which takes three times as long—as a nonstarter.

铁路将促进人们的消费，如北京居民可能会到120公里外的天津去购物，因为天津的物价要低一些， Princess Jeannie 。8.5美元的单程用时只需花30分钟，这会吸引大量中产阶级乘客，这些中产者应该早就看不惯耗时三倍的长途客车了。

It extracted useful visual features and used one-class support vector machine to identify and filter spam. The experimental results indicate that the proposed method can get satisfactory filtering effect with higher detection rate and lower false positives.

它提取出有用的形象特征并使用一类支持向量机来过滤垃圾邮件实验结果表明，该系统模型具有令人满意的过滤效果，并且有很高的探测率和较低的误判率。

XEX ~ Arg min{FIy E ~2} where the upper level is about topological structure optimization(a~ is a topological structure varable), and the lower level is a constrained programming about continuous variable y. 2 Apply graph, the action of permutation group on a graph, equiva- lent class, orbit etc.

取得的主要成果有： 1 依点到集的映射、集值映射、二元映射和分离定理等理论首次建立了具有拓扑结构双层规划的数学模型 min F s.t.x∈X y∈Arg min｛F|y∈Ω｝其上层规划为关于离散变量x的拓扑结构优化，下层规划是关于连续变量的约束规划。

There is no "democracy"; there is plutocracy - rule by the upper class which rides upon the back of the lower classes.

没有所谓的"民主"，有的只是上阶层压迫下阶层的财阀政治。

And lower bounds for ideal class numbers ofseveral series of real quadratic function fields are provided.

并且讨论了二次函数域的理想类数随判别式的次数的递增变化的规律，从而说明了解决二次函数域Gauss猜想的困难之所在。

The superiority of a class of linear estimator with respect to generalized least square(GLS estimator of regression coefficients was studied in terms of the mean square error matrix(MSEM criterion, and the lower bound and super bound of three relative efficiencies were obtained respectively.

在均方误差矩阵准则下研究了回归系数的一类线性估计相对于广义最小二乘估计的优良性问题，并讨论了三种不同相对效率的上、下界。

Liang Mei ridgepole says, he often speaks with employee be, the best method that popularizes a brand provides first-class service for the client namely, let a client advertise to you, such not only advertisement cost is lower, and assuring is true.

梁镁栋说，他经常跟员工讲的一句话是，最好的推广品牌的方法就是为客户提供最好的服务，让客户给你做广告，这样不仅广告费比较低，而且保证是真实的。

Through ordering the finite places by their principlal norm, much lower bounds for the norm of exceptional places in computing K〓 groups for the ring of integers in quadratic imaginary fields with class number 2 or 3 is obtained.

根据有限位的主范数将有限位进行排序，较大幅度地降低了类数为2或3的虚二次域整环的K〓群的计算中例外位的范数的界。

Viability Theory is applied to the optimal control problem for this class of hybrid dynamic time varying systems in this dissertation for the first time. And the statement about a characterization of the extended value functions as the unique lower semicontinuous solution to a Bensoussan-Lions type QVI is proved.

本文首次将生存理论应用到这一复杂系统的最优控制问题中来，得到了最优控制问题中的值函数是一类拟变分不等式唯一的下半连续解的重要结论。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。