反向

BP neural network based on adaptive UKF is introduced in this paper for the standard BP neural network has slow converges,local minimum value and weak generalization ability.It can train weight of BP and improve the efficiency of BP without linearization by using the frame of Kalman filters and adaptive factor to adjust the variance of dynamic model.

1引言1986年，Rum elhart和M cC lelland等人在多层前向神经网络模型的基础上，提出了误差反向传播学习算法(BackPropagation简写BP)，该算法是目前在神经网络中应用最广泛的算法，它解决了多层前向神经网络的学习问题[1]。

Measuring the reverse bias current of an APD requires an instrument that can measure current over a wide range as well as output a voltage sweep.

测量APD的反向偏置电流需要一种能够在很宽范围内测量电流并且能输出扫描电压的仪器。

So I begin to be optimized from log content and friendship link since wherefrom day, although my among them the Pr value of a station is 0, but I am afraid not at all, because I have confidence to had been done, of course the resource that I admit it is good to there is a lot of here can be used, say several Pr are worth the station of 5 to become a link with me for example, my friendship links the site that chopped several Pr4, link type make it rich customer site, its purpose purifies link and retrorse link namely, a good data can get in be being updated next time to be worth in Pr namely.

所以从那天起我就开始从日志内容和友情链接上优化，虽然我的其中一个站的pr值是0，但是我一点也不担心，因为我有信心做好，当然我承认我这里有很多好的资源可以利用，比方说好几个pr值5的站都跟我做链接，我的友情链接砍掉了好几个pr4的站点，链接类型都做成了博客站点，其目的就是净化链接和反向链接，就是为了在pr值下次更新中能够得到一个好的数据。

Of all the wild animals in their area/, none was more useful to the Delaware tribes/ than the Virginia white-tailed deer/: it was a source of meat/, and its hide was used for clothing/, its antlers and bones for tools/, and its sinews and gut for bindings and glue.

但生词较多，不过根据我们的原则认识的就反映不认识的就过去，是可以理解句子的。我们可以理解成"什么可以用做什么"，反正就是在说鹿的各个部位都有用。唯一有难度的地方就是 none was more… than 没有什么比它更…，也就是说它最…，反向理解。

R. C. Willey will soon open in Reno. Before making this commitment, Bill and Scott again asked for my advice. Initially, I was pretty puffed up about the fact that they were consulting me. But then it dawned on me that the opinion of someone who is always wrong has its own special utility to decision makers.

R.C.Willy很快就要在Reno开店，但在正式投入之前，Bill跟Scott礼貌性地征询我的意见，一开始，我对于他们向我请益感到颇为自豪，但最后证明，他们只是把我的看法，当做反向参考意见。

A human transforming growth 〓 cDNA was inserte in reverse orientation into the retroviral vector, pLXSN. Restriction en zyme analysis was used to confirm the antisense orientation of 〓〓 in the pLXSN vector from individual transfomants.

将人的转化生长因子-〓cDNA（1467bp）反向插入逆转录病毒载体pLXSN，筛选转化菌，挑取抗性克隆，用限制性内切酶酶切鉴定重组子。

It is difficult to control a single inverted pendulum system because of the characteristics of multi-variable, nonlinear and absolutely instability of the system. A controller based on adaptative neuro-fuzzy inference system is designed by using Matlab/Simulink software in the paper. For the sampling data the hybrid algorithm of back propagation algorithm and least squares algorithm is applied in the paper. Thus the parameters of membership function are adjusted and all of the fuzzy rules are generated automatically.

摘 要：针对单级倒立摆系统具有多变量、非线性、绝对不稳定的特点，本文应用Matlab/Simulink 设计了用于倒立摆系统的基于自适应神经模糊推理系统的ANFIS控制器，采用反向传播算法和最小二乘算法的混合算法对倒立摆控制样本数据进行学习，调整各变量的隶属度函数，自动产生模糊规则。

The numeric resultS for two different taper profiles in step-index fiber show that the couplings to the reflected mode and the high-order modes are relatively small provided the change is gradual, and the fundamental mode has the capability of excellent transmission which can adjust itself adiabatically to the reflective index change.

对阶梯折射李光纤两种不同折射率Taper结构的数值计算结果表明：在折射率变化相对缓慢情况下，这种折射率Taper耦合器的基模反向散射和向高阶模的耦合都很小；基模能够自适应地调节以适应波导折射率的渐变，具有优良的传输性能。

For allopatric species, asymmetric ethological isolation was apparent in crosses between O. chinensis formosana and O. yezoensis: females of O . chinensis formosana readily accepted males of O. yezoensis, but females of O. yezoensis show reluctance to males of O. chinensis formosana; howe ver, in either reciprocal cross sperms were transferred.

分布不重叠的中华稻蝗台湾亚种与小翅稻蝗之间，小翅稻蝗的雌虫与中华稻蝗台湾亚种雄虫的交配率显著低于种内交配，反向交配时则和种内交配率无显著差异；正反交配都能完成精子传送，显示出不对称、不完全的行为隔离，而无机械隔离的存在。

They were thought involved in anthocyanidin biosynthesis in light-sensitive "Tsuda" and light-insensitive "Yurugi Akamaru". Reverse subtractions, i.e., library 1 and library 3, were compared.

比较反向构建的消减文库1和3发现，在消减文库1中筛选到的基因片段涉及54条代谢途径，其中包括类黄酮生物合成等特异的代谢途径。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。