变换

This type of reduction is more refined than the more usual polynomial-time many-one reductions and it allows us to distinguish more classes such as

相较起来，不同处在於多对一变换只能呼叫上述副函式'''一次'''，且副函式的回传值必须'''就是'''整个变换程式回传的值。

The transformed systems need not to have special forms and there are no restrictions on the types of nonlinearity contained in systems. The only requirement is that the two matrice defined in the paper should be a controllable pair at every point.

它不要求线性化微分同胚变换后系统具有特定形式，对系统所含非线性也不作限制，它只要求变换后系统的两个特定函数矩阵在点点均为能控对。

This kind of digitalholographic wavefronts transforming method have found widespreadapplications in the fields of exact measurements, three dimensional imaging,microscopy, optical micromanipulation, atomic optics, quantum informationprocessing and so on.

本论文正是以此为出发点，重点研究了扭曲向列液晶空间光调制器(TN-LCSLM， Twisted Nematic LCSLM)的波前变换特性及其应用，为这一动态波前变换技术在光学微操纵、软物质自组织过程的控制等领域的应用提供了理论和实验基础。主要研究内容概括如下。

Via basic and descriptor adverse transformation of matrix, an equivalent standard linear system is derived. Sufficient and necessary conditions are established for observers with disturbance decoupling and LTR in systems. Analysis showed that the necessary and sufficient condition for observers with LTR is disturbance decoupling to any undnown inputs. So it is con verted to the problem that observers are designed with disturbance decoupling.

通过矩阵的初等变换和广义逆变换，将非方广义系统等价地转化为正常状态空间的广义线性系统，并运用有关定理给出观测器具有干扰解耦和环路复现特性的充要条件，经分析可知，系统具有环路复现特性的充要条件是系统对于任何未知输入干扰解耦，则具有环路复现特性的干扰解耦观测器的设计问题转化为系统关于任何扰动都是解耦的。

The positive converter makes the load current to be positive in trigging control, while the negative converter is negative.

系统建模在实际确定的导通模式基础上加上两管换流模式和正负换组模式；触发控制中正组变换器使负载输入电流为正，负组变换器使其为负。

Phase Shift - While phase shifted, the imp is now targetable but will remain an invalid target for all spells and attacks except self-cast spells.

相位变换-相位变换的时候，小鬼可以作为目标，但是对于任何魔法和攻击保持为无效的目标，除非它自己使用法术

The algorithm suppresses background and enhances targes by morphological Tophat transform in spatial, and the image sequences are processed with the 1-D wavelet transform in order to separate the target from background in temporal.

在空域上，通过灰度形态学Tophat变换抑制背景、增强目标；在时域上，对红外图像序列连续四帧进行沿时间轴一维小波变换，实现目标和背景的分离。

This invention relates to three-dimensional seismic data processing quality monitoring technology. Selecting time-window and analysis frequency for FFT to obtain frequency-domain conversion result for every channel; taking mean-filter to obtain the statistic excited energy or noise disturbance; plotting all results on plane graph to monitor the 3D excited energy or noise disturbance; taking normalization and autocorrelation to all earthquake channel; summating all autocorrelation statistic result to obtain opposite statistic autocorrelation result; finding out and plotting the zero-crossing of autocorrelation on plane position for monitoring excited wavelet.

本发明涉及一种三维地震资料处理质量监控技术，步骤是：选定时窗和分析频率；对某炮各地震道在时窗内做快速富立叶变换，得到道数据在频率域变换结果；对同炮的所有地震道做频率域中值滤波，得到该炮的统计激发能量或噪声干扰量结果；将所有炮的计算结果绘到各炮点平面图上，监控三维激发能量或噪声干扰；对地震数据某炮的各地震道做归一化自相关；对同炮的所有地震道的自相关统计求和，得到该炮的统计自相关结果；寻找该炮统计自相关的零交叉时，将所有炮的零交叉时绘到各炮点平面位置上，完成激发子波监控。

Unlike previous methods which rely on look-up tables to implement the SubBytes, we use the combinational logic which is only based on arithmetic operations in the finite field GF (2^8) with 3 substages.

文章在研究有限域GF(2^8)与其复合域GF(2^4^2变换的基础上，采用组合逻辑替代RAM查表的方法实现SubBytes变换，并在其内部实现了三级流水线。

Some circuits use resonant, quasi-resonant, and/or multi-resonant techniques. However, voltage or current stresses in these converters are higher and require the devices of higher VA rating. Some circuits use passive snubbers or active clamp techniques. However these converters become more complicate. Phase-shift ZVS technique has been used in bidirectional DC/DC converters since it can realize ZVS for all switches without auxiliary switches.

谐振、准谐振或多谐振技术方案，变换器的电压电流应力较高，变频控制增加了滤波器设计的难度；能量缓冲吸收电路或有源钳位电路方案，由于需要增加多个额外辅助元件，增加了变换器的复杂性；全桥相移技术方案，由于主电路无需增加额外元件，只需利用相移控制，即可实现软开关，因此引起关注。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。