近神经的

Algorithm application of neural networks.Ⅲ Implementation of neuro-computers. The main contribution of the dissertation can be summarized as follows: 1 Hopf bifurcation of three kind of neural networks are discussed in detail, including type of discrete time delay, type of time delay with weak kernel and strong kernel as well as the proof of existence of bifurcation. Other problems such as asymptotic stability of bifurcation periodic solution, algorithm of determining the bifurcation direction, asymptotic stability and style of periodic solution are also studied. The average time delay is chosen as the bifurcation parameter, phenomena pertinent to system states of the continuous time delay network with strong kernel evolving from stable to oscillating, then back to stable again are observed.

论文的主要创新之处可以归纳如下： 1）针对目前国内外对神经网络的分岔研究较少的情况，论文中详细讨论了带离散时延神经网络、带弱核的连续时延神经网络、带连续分布时延且具有强核的神经网络的Hopf分岔现象，从理论上证明了Hopf分岔的存在性，并研究了分岔周期解的渐近稳定性，得到了确定周期解的渐近稳定性、分岔方向、周期解的渐近形式的算法；用平均时延作为分岔参数，发现带强核的连续时延神经网络中存在着系统的状态由稳定变化到振荡现象，当继续增加平均时延参数时，又从振荡变为稳定这一特殊的动力学现象。

Different portions of the ulnar nerve （1/6, 1/3, 1/2, 2/3, and entire nerve） were cut at the level where the musculocutaneous nerve enters the biceps brachia.

目的 研究不同程度切断大鼠尺神经主干近段对肢体功能的影响，以判断截取神经的限度。

Results In the distal two - thirds of the upper arm, branches of the median nerve constantly formed three fascicular groups. The anterior part of nerve trunk hosted branches to the pronator teres and the flexor carpi radialis. The posterior part of nerve trunk contained the anterior interosseous nerve and branches to the palmaris longus muscle. Branches to the hand and to the flexor digitorum superficialis which was the main trunk of the median nerve at the proximal forearm were grouped to form the middle part.

结果 在臂中、下段，正中神经的分支恒定地组成3个神经束组：旋前圆肌肌支和桡侧腕屈肌肌支束组在神经干的前方，骨间前神经和掌长肌肌支束组在神经干的后方，中间束组是由指浅屈肌肌支和手部分支组成的正中神经前臂主干的近段。

A fixed point of a discrete-time neural network with generalized input-output function and by using the converse theorem of Lyapunov function we study the uniformly asymptotical stability of equilibrium in this discrete-time neural network with variable weight and give some sufficient conditions that guarantee the stability of it.

本文首先介绍了几类离散神经网络模型的由来及其研究概况，利用Schauder不动点原理证明了一类具有广义输入输出函数的离散神经网络模型平衡点的存在性，利用Lyapunov函数逆定理给出了这类离散神经网络模型在时变权值下的一致渐近稳定性的充分条件。

In this thesis, we firstly introduce several class of discrete-time neural network models and the research progress of the neural networks. By Schauder fixed-point principle we prove the existence of an equilibrium (i.e. a fixed point) of a discrete-time neural network with generalized input-output function and by using the converse theorem of Lyapunov function we study the uniformly asymptotical stability of equilibrium in this discrete-time neural network with variable weight and give some sufficient conditions that guarantee the stability of it.

本文首先介绍了几类离散神经网络模型的由来及其研究概况，利用Schauder不动点原理证明了一类具有广义输入输出函数的离散神经网络模型平衡点的存在性，利用Lyapunov函数逆定理给出了这类离散神经网络模型在时变权值下的一致渐近稳定性的充分条件。

By transforming the delayed neural model to the describer model and then employing the Lyapunov-Krasovskii stability theorem, linear matrix inequality LMI technique, S procedure, and some algebraic inequality method, a new sufficient condition is derived, which is determined by the coefficients of the model and includes more tuning parameters for determining the globally asymptotical stability of recurrent neural networks with time-varying delay.

首先将要研究的模型转化为描述系统模型，然后利用Lyapunov-Krasovskii稳定性定理、线性矩阵不等式技术、S过程和代数不等式方法，得到了确保时变时滞递归神经网络渐近稳定性的新的充分条件，并将它应用于常时滞神经网络和时滞细胞神经网络模型，分别得到了相应的全局渐近稳定性条件。

Objective To study the possibility of nerve regeneration along normal nerve trunk to overcome nerve defect, when both ends of a defected nerve is sutured end to side with the common normal nerve.

目的 研究将一有缺损神经的近端和远端与同一正常神经干行端侧缝合后，近端神经纤维沿该神经干克服缺损进行再生的可能性。

Results:Making quantitative analyses on the suffered extent ,segments and severness of lumbosacral radiculopathy .

在常规肌电图检查和神经传导检查的基础上，采用H反射和F波的近神经端测定。

The flat posterior surface of the tibial shaft can be completely exposed, except for its proximal fourth, which lies in close relation to the popliteus muscle and to the proximal parts of the posterior tibial essels and the tibial nere.

胫骨干平坦的后侧表面除近端四分之一因与腘肌以及胫后血管和胫神经的近侧部关系密切外，其余部分均可显露。

In group A, the left musculocutaneous nerve was transected to make the model of biceps brachii denervation and anastomosed to its proximal end 6 weeks later; In group B, the musculocutaneous nerve was transected and the distal end was coapted to the purely motor medial pectoral nerve immediately and the musculocutaneous nerve was separated from the medial pectoral nerve, and reanastomosed to its proximal end 6 weeks later.

随机分为两组（ n =8）：肌皮神经延期修复组，单纯剪断左侧肌皮神经，造成肱二头肌失神经支配模型，6 周后行肌皮神经修复；神经移位寄养二期肌皮神经修复组，剪断左侧肌皮神经后即刻将胸内侧神经分支的近端移位寄养于肌皮神经的远端，6 周后结束寄养关系行二期神经修复术。

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。