神经

Parotid region skin shows vasodilatation, flush and diaphoresis in meal. The mechanism is aberration-regenerate theory. The treatments include drug treatment, local treatment and operation treatment. The obviate is to put interval stuff in operation, skin flap can prevent nerves wrong to unite on parotid raw surface. It can barricade insulate the wrong unite of parasympathetic nerve and reign skin interneural if insert apo-cell subcuticula ground substance in operation.

腮腺区皮肤在进餐时出现血管扩张、潮红、出汗现象，其机制为迷走再生学说，其治疗有药物治疗、局部治疗、手术治疗，预防主要是术中放置间隔材料，皮瓣在腮腺创面上防止神经错联发生；如术中植入脱细胞真皮基质，屏障隔离副交感神经与支配皮肤神经间的错联。

Thirdly, in order to improve the learning efficiency and stability of feedforward neural network, a fast learning algorithm for neural networks based on CGM-OC approach is presented. Compared with other learning methods such as BP method, Broyden Flecher Goldfarl Shanno method and Powell method in which the derivative is replaced by the difference quotient etc, simulation results show that the proposed method is an efficient and fast one.

第三，为了提高前馈神经网络权值的学习效率及稳定性，提出一种基于正交校正共轭梯度优化方法的神经网络学习算法，通过与其它学习算法（如：BP算法、变尺度法、用差商近似代替导数的Powell法等）的比较，经仿真试验表明，本算法是一种高效、快速的学习算法。

The initialized parameters of neural networks are selected, which is directed by rough set theory, and the networks are trained by using a probability-based BP algorithm, which minimizes system errors.

首先，利用粗糙集理论对神经网络初始化参数的选择和确定进行指导，赋予各参数相关的物理意义；然后，以系统输出误差最小化为目标对粗糙神经网络进行训练，使其满足性能要求。

BACKGROUND: Neural stem cells have the potential of self-proliferation and multiple directional differentiation, and can differentiate into various cells in the neural system under a certain condition.

摘要背景：神经干细胞具有自我增殖能力和多向分化潜能，一定条件下可以分化成神经系统的各种细胞，因此在神经损伤修复方面有着良好的应用前景。

BACKGROUND: Effective proliferation in vitro of neural stem cells and directional induction and differentiation of dopaminergic neurons play a key role in neural stem cell transplantation for treatment of degeneration of the nervous system and repair of injured nervous system.

背景：在神经干细胞移植治疗神经系统退行性变及修复神经系统功能损伤过程中，有效的神经干细胞体外增殖与多巴胺能神经元的定向诱导分化尤为关键。

Using BP algorithm of feed-forward neural network in fuzzy neural network, the small disjunction samples are further processed.

采用模糊神经网络中的前向神经网络BP算法对小分裂样本进行进一步处理。

It is the result of incomplete disjunction of the cutaneous ectoderm from neural ectoderm during the process of neurulation.

这是在神经胚形成期，皮肤外胚层从神经外胚层分离不完全所致。

Neural network-based face distinguishment Human face is a kind of special pattern and has variances in size, location, rotation and distribution in facial features.

基于神经网络的人脸判别人脸是一种特殊的图象模式，在不同的人脸图象中，人脸在大小、位置、旋转角度、侧转程度、五官分布等许多方面存在着差异，难以用传统的神经网络分类方法加以判别。

By means of the projection method,adding a small disturbing function to the objective function, the penalty method, andthe gradient method, this dissertation proposes several neural networks for solvingsaddle point problems and minimum radius of ball-coverings problems, and investi-gates the stability of the proposed networks by the LaSalle invariance principle andthe Lyapunov method, so as to design neural networks which avoid getting stuck inthe local minimum.

本文针对约束鞍点问题和球覆盖最小半径的计算问题，分别利用投影法、对目标函数加上很小"扰动函数"的逼近法、罚函数法和梯度法等建立神经网络模型进行求解，并基于LaSalle不变集原理和Lyapunov直接法等工具，对模型的动态特性进行研究，从而设计出避免陷入局部极小的优化计算神经网络模型。

Objective: To investigate anatomic relationship between the deep peroneal nerve and dorsalis pedis artery on the dorsum of foot, and provide basis for the preparation of the dorsalis pedis compound flap containing neurovascular pedicle.

目的：探讨腓深神经和足背动脉在足背部的位置关系，为带神经血管蒂的足背复合组织瓣的切取提供解剖基础。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。