向性

Instead, our professorial candidates should be required to present objective evidence of aptitude and suitability through competitive examination.

因此想要获聘为教授时，这一位候选人，一定要提出研究生涯的目标，提出他适合这工作的性向证据。在竞争之下，我们才能聘到一位教授，他不会只把工作看作是例行公事，或是赚钱的一个跳板。

to reduce the impact of carrier frequency offset in ofdm system,this thesis designs a new carrier frequency offset estimation scheme for ofdm system.the carrier frequency offset estimation includes acquisition and tracking.we adopt variable step size adaptive algorithm.the acquisition range of the proposed algorithm is as large as one half of the overall signal bandwidth.through this method we can not only avoid the feedback by using forward error correction,but also reduce the times of complex multiplication in order to reduce the power consumption of the system.this algorithm not only has low complexity and fast convergence nut also can improve the demodulation performance of ofdm system.computer simulation illustrates the superior performance of the proposed algorithm with regard to estimation accuracy in both awgn channel and multi—path channel.

摘 要：为了减小正交频分复用系统受频率偏差的影响，在ofdm系统中设计了一种新的载波频偏估计算法。频偏估计包括跟踪和捕获两个阶段，文中采用变步长自适应算法来进行跟踪，这个跟踪算法的捕捉范围是整个信号带宽的一半。通过此方法，不但可以利用前向纠错的方式来避免反馈，而且可以缩减复数乘法的次数以降低计算复杂度和系统功耗。该方法运算复杂度低，并具有较好的收敛性，能改善odfm的解调性能。从计算机的仿真效果可以看出无论是在awgn信道上还是在多径信道上都表现出了卓越的性能。

Let X be a Banach space and ψ an analytic self-map of D. We characterize the weak compactness of the composition operator C〓 on the vectorvalued Nevanlinna classes N and N〓.

给出了向量值解析函数空间N与N〓上的复合算子C〓的弱紧性的刻画，这里X是一个Banach空间。

You will also find links to technical terms such as "deciduous" and coniferous .

你还会发现一些引向某些技术术语的链接，像"落叶性的"和"松柏科的"等。

Because the backscattering coefficient is constant, Amazon tropic rain forest is the important calibration region.

亚马逊热带雨林的后向散射系数呈现大面积的均匀性和稳定性，故成为分布目标定标最主要的定标场。

In the thesis, two constructible definitions for DAG are put forward to make it intuitive and operable.

本文提出了有向无回路图的两种构造性定义，使DAG直观化、可操作化。

Like the effect of Cold-War President Richard Nixon's surprising visit to the People's Republic of China in 1972, which led other countries to open relations with China, adoption of a practice by activism-resistant firms signaled to mainstream firms that an advocated practice had lost its contentiousness.

正如1972年冷战时期的总统 Richard Nixon 出人意料的访问中华人民共和国，使得许多国家开始发展对华关系一样，保守主义的公司采纳一种做法向主流公司暗示这一做法已经不再具有争议性。

Based on the series expansion technology in complex potential theory established by Muskhelishvili the complex stress functions can be estabished. By utilizing the continuity principle of the boundary condition and the characteristics of far field and according to the comparison of the coefficients of the terms on both sides of the equation with the same exponent the present problem can be transformed into solving of linear equation set.

根据Muskhelishvili复势理论的级数展开技术，构造了合适的各区复应力函数；然后，利用边界上位移、力的连续性条件和远场的性态，通过等式两边同次幂指数的系数比较，将问题转化为线性方程组的求解；结合叠加原理，获得混凝土在此情况下环向应力的解析解答。

Thus, the evolution of the physical form of a residential culture follows a common pattern from continuousness to non-continuousness and then to another continuousness at a higher level.

居住生活形态的核心居住生活方式是受生产力水平引发的生产方式变革所规定，具有超越社会制度的全人类性，遵循着由连续向非连续最终又将实现更高层次连续之不断转化的共性规律。

In the middle-lower level, it is similar to the convectional motion and develops in immovable areas; but in upper level, the developed convection will spread downstreamly.

它在中低层更接近对流性运动，且在固定区域发展；而在高层，对流环流发展之后，向下游传播。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。