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Numerical analysis of the best uniform approximation polynomial problem, the program contains polynomial input interface.

详细说明：数值分析中的最佳一致逼近多项式问题，程序中含多项式输入界面。

Tubbs firstly used a regularized Beta function to fit the contrast transform of an input image.

不同对比度分布的图像应采用不同的对比度变换函数。

But,it is still a problem to find the two parameters of the Beta function for an input image to be adaptively enhanced.

Tubbs通过使用规则化Beta函数拟合对比度变换曲线，能实现图像对比度的自适应变换；但使用该方法需确定Beta函数的两个参数，其参数的自适应选择仍是一个较为复杂的问题。

We simulate the circuit with the Agilent ADS, After select the most suitable topology structure of circuit,we simulate the biasing circuit,input and output matching circuit. Through the method of the small signal s parameters and the nonlinear designing method, we design and simulate the drive stage and last stage power amplifier with ADS software, point out some problem in the design procedure.

设计软件采用Agilent ADS软件进行仿真设计，在选定合适的拓扑结构后，对放大器的静态偏置点、输入输出匹配电路进行仿真，通过应用小信号S参数设计方法和非线性设计方法分别设计了驱动级和末级放大器，指出了设计过程中的一些问题。

The dual-band differential LNA use Inductive source degeneration structure, a matching network is used for the LNA to develop dual-band. The micro-mixer use a matching network shunt and parallel LC elements to develop wide-band matching. The biasing method reduces the"voltage headroom" difficulties inherent to the Gilbert cell, and the mixer linearity can be improved using this biasing method "Charge -Injection"by accurate adjustment of the input MOSFET operating point. The complementary VCO based on 2.5GHz, and tuning output buffer to approach 2GHz/5GHz dual-band for dual-band down-converter with MMIC technology.

其中双频差动低杂讯放大器，本电路用Inductive Source Degeneration 架构，在匹配网上设计，使低杂讯放大器工作在个频带上达成双频带的效果；CMOS 微混频器上采用LC串联、并联电路做匹配，达到宽频匹配的效果，并加入了"Charge-Injection"的方法来改善"voltage headroom"的问题，并同时提高线性度的表现；互补式压控振荡器以2.5GHz为基频的振荡器为出发点，透过电路的调整，以期达成2.5/5GHz的双频带需求，能够完整达成双频带接收机系统。

Simulations based on finite integration method are carried out in a wide frequency range for a balanced feeding finite wide-angle biconical antenna and many results including input impedance and far fields are obtained.

利用基于有限积分法的电磁场仿真技术对平衡馈电的有限长宽角双锥天线作了计算，得到了天线在很宽频带内输入阻抗、远区辐射场与频率的关系曲线。

Finite wide-angle biconical antenna ; modal analysis ; finite integration ; input impedance

有限长宽角双锥天线；模式匹配；有限积分法；输入阻抗

By using symmetry and boundary conditions the field and input impedance of finite wide-angle biconical antenna can be derived by modal analysis, which generally results in solving infinite linear equations.

模式匹配法利用有限长双锥天线的轴对称性求解天线电磁场边值问题，通常导致求解无限多个线性方程而得不到严格解。

Through analysis of the characteristics of power flow, transmission efficiency and self-lock of a combined planetary transmission, a design method based on the power design parameter of the bifurcated power of the main branch and the total input power ratio was developed in this paper.

对组合式行星传动的功率流特性、传动效率、自锁条件等进行了分析，提出了以系统主支路功率流大小与输入总功率的比值为功率参数的设计方法，并给出了系统实现功率分流传动和自锁的判别准则。

For a single-input bilinear singular system, a stable region of closed loop system around the origin is approached.

对单输入的双线性广义系统，探讨出闭环系统在原点附近的一个稳定域。

My father is over 60 years old, and he lifts weights every day.

我爸爸六十多岁了，他每天都练习举重。

Then in a serious tone she declared:"It doesn't pay, dear boy, to look like a ninny with one's wife the first night."

两眼湿润了，她把身子蜷得很小，这样似乎可以更好地闻闻自己。