周期的

A main feature in developing the theory is that the scope is expanding: from almost periodic function, asymptotically almost periodic function, weakly almost periodic function to pseudo almost periodic function which was introduced by Professor Zhang in 1992. Every extension consumedly enlarges the theory and their applications.

从概周期函数、渐进概周期函数、弱概周期函数，一直到张传义教授在上世纪九十年代初提出的伪概周期函数，每一次函数范围的扩展都大大地丰富了概周期函数的理论和其应用前景。

The code plate is equipped with intelligence code, energy code, constitution code, ovulation conclusion table of women with normal catamenia as well as code positioning cooperation method.

8 ，其组成包括衬盘、生理周期盘、代码定位盘和标尺，生理周期盘、代码定位盘和标尺分别配装在衬盘的正、反两面，由盖拴固定在衬盘上，生理周期盘的月日盘周圈上设有月日相应标识，精力盘、智力盘和体力盘周圈上分别设有精、智和体力生理周期循环变化标识，内圈盘依次位于相邻外圈盘上标识内圈：代码定位盘的年份盘周圈上设有 00-99 个年份标识，代码盘上设有智力代码、精力代码、体力代码标识和月经正常女性排卵时间推算表以及代码定位操作方法；标尺为两把，分别配装在生理周期盘和代码定位盘上，生理周期盘上的标尺上设有指示标尺线，代码定位盘上的标尺设有定位代码标识框；本实用新型优生测算器结构简单，测算内容显示直观，操作简便。

By measuring missile movement inertia with torsion pendulum, the influences of periodic measurement error, systemic damp, period of swing object and corporative period of t he measured object and swinging object were analyzed. The relation among measurement error of movement inertia, measureme nt period, the period of swing object,corporaˉ tive period of tested object and swing object was proved. The maxi mal ratio between movement inertia for swinging obˉ ject and the measured object under conditions of different errors w as given under typical measurement precision.

通过扭摆测量导弹转动惯量的方法，分析了周期测量误差、系统阻尼、摆动体周期以及被测件和摆动体共摆周期对转动惯量测量精度的影响，得出转动惯量测量误差和周期测量误差、摆动体摆动周期、被测件和摆动体共摆周期之间的关系，给出了在典型的测量精度要求，不同的周期测量误差情况下，摆动体转动惯量和被测件转动惯量之间的最大比值。

A fire\|new theory for periodic or quasi\|periodic signal sampling is proposed,w hich is especially for sampling high\|frequency wideband periodic or quasi\|peri odic signal by low sampling rate system.

涉及一种周期或准周期信号的采样技术，特别适用于低频采样系统采集高频宽带周期或准周期信号。

Our results improve the former results. For periodic Jacobi matrix, some new spectral properties of periodic Jacobi matrix are given by studying the relationship of the eigenvalues of periodic Jacobi matrix and its n—1 principal submatrix. Applying these spectral properties, we present a necessary and sufficient condition for the solvability of an inverse problem of periodic Jacobi matrices and discuss the number and the relationship of its solutions. Furthermore, we propose a new algorithm to construct its solution and compare it with the former algorithms. As this inverse problem of periodic Jacobi matrix usually has multiple solutions as many other eigenvalue inverse problems, we study the uniqueness of this problem. And a necessary and sufficient condition is given to ensure its uniqueness, under which an algorithm is presented and the stability analysis is also given. Finally, we put forward a new inverse problem for periodic Jacobi matrix which has not been solved.

对周期Jacobi矩阵特征值反问题，通过研究周期Jacobi矩阵与其n-1阶主子阵特征值的关系，给出了周期Jacobi矩阵的一些新的谱性质；利用这些谱性质，研究了一类周期Jacobi矩阵特征值反问题，用新的方法推导出了该类特征值反问题有解的充分必要条件，并讨论了解的个数以及解与解之间的关系；此外，提出了一种新的构造周期Jacobi矩阵反问题解的数值算法，并与前人的算法做了一定比较；由于周期Jacobi矩阵特征值反问题和其他很多特征值反问题一样往往存在多个解，本论文给出了周期Jacobi矩阵反问题解唯一的充要条件，并发现周期Jacobi矩阵特征值反问题的解唯一当且仅当构造的矩阵满足一定的条件；在解唯一的情况下，给出了构造唯一解的数值算法，并做了相应的稳定性分析；最后，提出了一类新的有待于解决的周期Jacobi矩阵特征值反问题。

And a family of UPO including period－1, period－2 and period－3 was identified.

采用一种新的检测时间序列非稳定周期轨道的方法分析ISI序列，发现ISI含有非稳定周期轨道族，即周期1，周期2，和周期3存在。

Methods We randomly assigned 410 patients with locally advanced or metastatic cholangiocarcinoma, gallbladder cancer, or ampullary cancer to receive either cisplatin (25 mg per square meter of body-surface area) followed by gemcitabine (1000 mg per square meter on days 1 and 8, every 3 weeks for eight cycles) or gemcitabine alone (1000 mg per square meter on days 1, 8, and 15, every 4 weeks for six cycles) for up to 24 weeks.

我们将有局部晚期或转移性胆管癌、胆囊癌或壶腹癌的410例病人随机分为两组：一组先接受顺铂（25 mg/m2体表面积）治疗后再接受吉西他滨（1000 mg/m2，第1天和第8天，每3周为1个周期，共8个周期）治疗，另一组接受单纯吉西他滨（1000 mg/m2，第1、8和第15天，每4周为1个周期，共6个周期）治疗，最多治疗24周。

Theoretical analysis and numerical results show that a steady positive period-1 solution bifurcates from the semi-trivial periodic solution through a transcritical bifurcation.

数值模拟显示，随着控制参数的变化，正周期-1解通过倍周期分岔出正周期-2解，再通过一系列倍周期分岔通向混沌。

Induction (diapasue and nondiapause; sex and non-sex) supervenes when summation surpasses the internal threshold. The review reports some characters of the photoperiodic counter in insects and mites, including the following aspects:(1) the accumulation of photoperiodic information during photoperiodic sensitive period of insects.(2) the thre...

本文报导了昆虫和螨类光周期计数器的一些特点，主要包括以下几方面的内容：(1)光周期信息的积累主要发生在光敏感期内；(2)光周期信息的积累存在一个阈值，即需要积累一定数量的长夜或短夜循环去诱导50%的个体发育或滞育；(3)光周期信息的积累受温度、地理纬度和食料的影响；(4)长夜和短夜循环的光周期信息积累的方式；(5)光周期信息的积累的数量反应和质量反应；(6)光周期计数器的内分泌调控。

Eur J Haematol, 1996, 57:121～127.［3］ Enzan H, Takahashi H, Kawasaki M et al.Light and electron microscopic observation of hepatic hematopoiesis of human fetuses.

BFU-E在增殖分化过程中高表达周期蛋白E，并轻度上调周期蛋白D3，分化末期周期蛋白E和周期蛋白D3的表达迅速下调［14］。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了