神经

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。

Proceed from the principle of neural networks, the mechanism of mapping between input and output of neural networks was analyzed, and the BP algorithm for training the thresholds of neurons was derived. Based on the study to the distinguishability of input of networks, the effect of neural networks to distinguish-ability of characteristics was studied, and the optimizations of the structure of networks, learning rate, impulse factor, thresholds of neurons and initial weight of networks were completed. Through the experiments under fixed cutting regime and alternative cutting regime, the methods based on neural networks for tool wear monitoring were studied.

本文从神经网络的基本原理出发，研究了神经网络输入输出的映射机理，探讨了神经网络处理方法具有自适应性的原因；推导了神经元阈值学习BP算法；在研究网络输入特征可分性准则和特征敏感性准则的基础上，探讨了神经网络对特征可分性的作用；完成对网络结构参数、网络学习率和冲量因子、神经元阈值以及网络初始权值等参数的优化；并在固定切削用量和变切削用量条件下，对基于神经网络的刀具磨损检测方法进行了实验研究。

The protein and phospholipid constituent in membrane of neurocyte in brain of chicken with encephalomalacia was separated and studied with the method of SDS-PAGE electrophoresis and the method of high performance-thin layer chromatography respectively The fluidity of neurocyte membrane of chicken with encephalomalacia was determined for the first time The content of Ca and trace elements were determined in chicken encephalomalacia systematically and the status of Fe ion in cerebellum was observed. The activity of enzymes that were relative to metabolism of energy and neuro-medium in brain were checked systematically with the method of enzyme-histochemistry. Pathological examination was carried out by microscopic and ultramicroscopic observation. The apoptosis of neurocyte in brain was checked.

在进行临床观察、定期剖杀并检测体内V〓含量、体重和脑重的基础上，重点研究了与神经损伤有关的以下几个方面的内容：系统地检测了体内自由基代谢和抗氧化系统功能的变化；首次采用SDS-PAGE电泳法分离并检测了雏鸡脑软化症神经细胞膜蛋白组分，并以高效薄层层析法检测神经细胞膜磷脂组分；测定了脑软化症雏鸡神经细胞膜的膜流动性；首次系统检测了脑软化症雏鸡体内钙及微量元素含量，并进行了小脑组织总铁离子状态观察；采用酶组织化学方法系统地观察了脑组织中与脑能量代谢和神经递质有关的酶的活性；对相关组织进行了病理组织学和超微结构观察；并对脑组织中神经细胞的凋亡进行了检测。

Segment ulnar nerve conduction studies showed that most of the lesions were located above or below the medial epicondyle 2-3cm.③ Abnormal flexor carpi ulnaris muscle electromyography was not found involved in ulnar neuropathy at the elbow. Conclusion Short??

结果 ①尺神经病变组中有19例出现尺神经在肘上至肘下段运动神经传导速度减慢；②尺神经肘上至肘下段短节段性神经传导检测结果显示具体病变部位多数集中在肱骨内上髁上下2-3cm内；③尺神经在肘部病变者并非均有尺侧腕屈肌肌电图的异常。

Results ① Nineteen patients were found ulnar motor nerve conduction slowing across the elbow.② Shortsegment ulnar nerve conduction studies showed that most of the lesions were located above or below the medial epicondyle 2-3cm.③ Abnormal flexor carpi ulnaris muscle electromyography was not found involved in ulnar neuropathy at the elbow.

结果 ①尺神经病变组中有19例出现尺神经在肘上至肘下段运动神经传导速度减慢；②尺神经肘上至肘下段短节段性神经传导检测结果显示具体病变部位多数集中在肱骨内上髁上下2-3cm内；③尺神经在肘部病变者并非均有尺侧腕屈肌肌电图的异常。

Large numbers of experiments internal and external had confirmed both direct current and square pulse of distal end cathodal could improve peripheral nerve regeneration, because it could speed up transmigration, creeper, growth and development of cell Schwann, derivate growth of nerve fiber; it also increased blood capillary of epineurium, brood blood vessel, amendment ischemic of impaired nerve, it still could accelerate Wallerian

国内外大量的基础实验及临床研究都证实远端负极电流的直流电场及脉冲电场等均有促进周围神经再生的作用，认为其可加速Schwann细胞的游走、爬行及生长发育，诱导神经纤维的生长；电刺激还能促使神经外膜毛细血管数量增多，扩张血管，改善神经损伤段缺血状态，并加速Wallerian变性及崩解组织的清除，为Schwann细胞发育和髓鞘化过程提供充足的能量与物质，同时为神经轴突的再生提供良好的内环境；在神经断端出现瘢痕或神经瘤时，电刺激可增加神经纤维穿越瘢痕的能力。

The central nerve system of the Penacus orientalis: Two pairs of ganglia, which belong to the anterior part of the head, form the brain of the animal.

东方对虾的腹神经链共有十一对神经节，其中除第五对由两对神经节合并组成并发出两对附肢神经外，余者各自发出一对附肢神经。

Neurulation is an important stage in the embryo development of vertebrate, during which the ectoderm thickens into epidermal neural plate and then forms neural folds and neural tube.

脊椎动物胚胎发育过程中，神经胚期是一个重要的发育时期。这个阶段胚胎外胚层增厚形成上皮型神经板，神经板两侧隆起形成神经褶，随后神经褶两侧向背中线合拢并愈合成神经管。

Object: The mechanism and method of the neurectomy were explored in the treatment of e allergic rhinitis.The basic on anatomy and theory was provided for treating allergic rhinitis by surgical way. Methods:A team of Rabbits were made sensitization three days after the sphenoidpalatine nerve was cut or sympathetic nerve was cut.

目的：本研究旨在了解蝶腭神经切断治疗变应性鼻炎的机理和方法，了解感觉神经及其产生的神经肽在变应性鼻炎发病中的作用，了解鼻后外侧神经、筛前神经进入下鼻甲的确切位置，为切断相关神经治疗变应性鼻炎提供理论基础。

Expose the nerve first at the posteromedial aspect of the distal end of the biceps femoris tendon and trace it distally to where it winds around the neck of the fibula. In this location the nerve is covered by the origin of the peroneus longus muscle. With the back of the knife blade toward the nerve, divide the thin slip of peroneus longus muscle bridging it. Then displace the nerve from its normal bed into an anterior position.

先在股二头肌腱远端后内方暴露腓总神经，顺神经向远端追踪至环绕腓骨头的部分，此处腓总神经被腓骨长肌起点覆盖，保持刀背指向腓总神经，挑断跨越神经的部分腓骨肌纤维，然后将腓总神经自正常的位置转移至前移的位置。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了