能交换的

As the center or the Algebra subalgebra of a algebra plays an important role in reducing the number of state variables, the cartan subalgebra is a maximum Abelian subalgebra of an algebra, so it can be a powerful tool for the structure simplification of control systems.

由于代数的中心，或交换子代数在系统的变量降低方面具有重要作用，而Cartan子代数是李代数的极大交换子代数，因而它能成为简化系统结构的有力工具，第二部分利用向量场的积分曲线所定义的映射，构造出一个S—坐标，在该坐标下任一向量场都有一个标准的表示方法，一种无穷级数表示方法。

Friendship links Abelian group, this is planted on the net group still be pretty is much, or oneself are built group pull the person that has exchanged a link with you come in, let them help a person again, can bring many links, not informal of course what stands to be done, want and identical or oneself station theme is relevant, otherwise catenary the effect is not big also.

友情链接交换群，网上这种群还是蛮多的，或者自己建个群把和你交换过链接的人都拖进来，让他们再去拉人，能带来不少链接，当然不要随便什么站都做，要和自己的站主题相同或相关的，不然链了效果也不大。

The structure of plant has been decomposed into individual virtual metamer constructed using intelligent agent.

将植物离散化为基于智能Agent的叶元，能自主地执行生理过程、响应外界环境刺激、并且能和周边叶元进行通信、物质交换。

We improve the protocol for signing contract based on the research result of secure multiparty computation. In this protocol, the parties obliviously transfer the signed bit and the committed bit; the other parties can prove the validity of this bit based on the confirming sub-protocol, but he can't gain more information about the whole signature by accumulating the more signed bit or the committed bit. After the parties exchange the whole signed information, they declare the commitment about the signature respectively, and gain the whole signature of the other party. At this moment, the party doesn't care about the advance quit of the other party, because he has gained the whole signed information.

在协议执行过程中，参与者将合同的签名位以及他对签名位的承诺不经意传输给对方，对方可以利用验证子协议证明该位的有效性，但是他却不能通过位交换次数的增加获取更多的完整签名的信息；在完成签名位的交换之后，参与者分别公开承诺，并得到对方对合同的完整签名；在公开承诺时，协议参与者已经获得全部的签名内容，要么是签名位，要么是对方对该位的承诺，因此参与者并不需要担心对方提前终止协议，同时本文也利用多方安全计算的结论证明了该协议满足终止公平性。

The results show that 1,6-bis(2-hydroxyphenyl)pyridineboron (dppyBF functions acts as a electron transport group and triphenylamine as a hole transport group; the charge transport ability for the two types of carriers is not only high but also nearly balanced, which explains why it is an efficient single-layer electroluminescent device.

从重组能角度看，空穴迁移率大于电子迁移率，然而电子的交换积分大于空穴的交换积分，综合这两个因素，电子和空穴的迁移率几乎相当，这从理论上解释了其可以做成单分子发光器件的原因。

In this paper, the practical WDM multi-granularity traffic switching testing network is constructed and a novel method using eye diagram to monitor optical performance in the network is proposed. The method is demonstrated in the reconfigurable WDM multi-granularity traffic switching all-optical network and it results that it can realize supervision of optical signal to noise ratio, time jittering, channel power, extinction ratio and bit error rate of optical data stream of any wavelength channel in the network. The method is transparent to signal protocol and bit rates and is able to distinguish between different optical impairments.

摘要波分复用多粒度交换可重构全光网是当前光通信网发展的方向，该文构造了一种实际试验网，提出了一种&眼图法&对网中数字光信号进行全面监控的方法，并在自建WDM多粒度交换可重构全光网试验床上进行了演示，结果显示在网络重构等各种条件下均可对网中各波长通道数字信号的信噪比、定时抖动、功率、误码率等进行实时监测控制，该方法对光信号的协议和速率透明且能对各种光性能劣化进行鉴别。

Benes (1965) constructed an example to show that using packing routing strategy can make the number of middle crossbar required lower.

在1965年，班尼斯 Benes 举了一个例子说明，使用「优先选最忙的中继交换器」的策略，真的可以降低中继交换器的使用数目，而依然还是能让此网路不阻塞。

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。

We obtained similar results from the non H-exposed Cl sample. By plotting the Arrhenius relations we were able to obtain the activation energies for each set. From the set with H-exposure we obtained 1.23eV for inter-dimer hoppings and 0.70eV for intra-dimer hoppings respectively, while for the set without H-exposure we obtained 1.14eV and 0.62eV for the inter-dimer and intra-dimer hoppings respectively.

由Arrhenius 关系线，我们推算出氢-氯原子交换运动的动力能障，即对於曝氢而言inter-dimer跳跃的动力能能障为1.23 eV、至於intra-dimer跳耀的动力能则为0.70 eV，相对的，在对於没有曝氢的inter-dimer跳耀的动力能为1.14 eV，intra-dimer跳耀的动力能则是0.62eV。

Rotary's Youth Exchange program allows Rotary districts to participate in exchanges with students ages 15–19 from more than 80 countries worldwide.

扶轮的青少年交换计划能让扶轮地区参与全世界80个以上的国家15到19岁的学生参加交换活动。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。