上神经

The cause of the target fade-out in Neural Network nonuniformity correction scheme for infrared focal plane arraywas studied. Based on analyzing the strength and limitation of edge-directed NN scheme and nonuniformity correction combining one-point calibration and NN-NUC, a new combinational algorithm for nonuniformity correction was proposed.

中文摘要：分析了传统神经网络非均匀性校正算法在空域处理过程中产生目标退化的原因，在总结基于边缘指导的神经网络校正算法与一点定标和神经网络结合的校正算法的基础上，提出了新的组合校正算法。

Agkistrodotoxin, a presynaptic neurotoxin and one of the two neurotoxins from the snake venom of Agkistrodon halys Pallas, has been further purified by DEAF -cellulose and CM-Sephadex column chromatography and vertical slab polyacrylamide gel electrophoresis.

本文在前文的基础上，改进了蝮蛇神经毒素的分离方法，纯化了蝮蛇毒中的两个神经毒素之一，突触前神经毒素Agkistrodotoxin，并对其生化特性进行了分析。

Based on the priori knowledge of a point scattering - hyperbolic feature of subsurface objects in GPR B-Scan images, a method of ROI extraction with Neural Network is presented.

在分析了均匀介质中的目标回波特征一双曲线形态的产生机理和基本特征的基础上，提出了一种利用神经网络进行ROI提取的方案，根据GPR数据解译的特点，本文设计了相应的B-Scan图像预处理方法和神经网络结构、训练及测试方法，使用塑料管及其他目标的B-Scan实测数据对神经网络进行训练与测试。

Based on NewGA, the thesis proposes a multigroup parallel genetic algorithm with simulated annealing method , then combines MPGASA with BPNN. According to whether simulated anealing method is used or not, two parallel genetic neural networks are implemented respectively. Results show that PGANN_SA is superior to PGANN and NewGANN.

在NewGA的基础上首次提出一种基于模拟退火机制的多种群并行遗传算法MPGASA，将MPGASA与神经网络相结合，按照是否采用模拟退火机制接受新个体分别实现了两种并行遗传神经网络PGANN_SA和PGANN，计算结果表明采用模拟退火机制有利于改善遗传神经网络的性能。

Through the analysis the work of constructive algorithm and nappe neural networks,the constructive algorithm for training nappe neural network ensembles is proposed.

在分析构造性神经网络集成和层状神经网络集成方法的基础上，提出了一种构造性层状神经网络集成方法。

Glia; gliogenesis; glioma; glial cells; central nervous system; CNS; glial progenitor cells; glial fibrillary acidic protein; ependymocytes; ependoma; cytokeratins; vimentin; tanycytes; ion transport; lining cells; cerebrospinal fluid; CSF; ventricular system; floor plate; axon guidance; choroidal cells; choroid plexus epithelium; Chiari malformations; congenital aqueductal stenosis; neuroblast migration disorders; gap junctions

神经胶质；gliogenesis；神经胶质瘤；胶质细胞；中枢神经系统；CNS；神经胶质祖细胞；胶质原纤维酸性蛋白；室管膜细胞；ependoma；细胞角蛋白；波形蛋白；tanycytes；离子转运；衬细胞；脑脊髓液；CSF；脑室系统；底板；；脉络膜细胞；脉络丛上皮；恰里畸形；先天性导水管狭窄；成神经细胞迁徙扰乱；缺隙连接点

After treatment of CCl4 through oral route for four weeks, we have observed an interesting phenomenon in the animal model. That is the significantly decreased condition of nitric oxide synthase. The locations are sympathetic T7-T10 dorsal root ganglion, T7-T10 intermediolateral cell column, celiac ganglion, parasympathetic nodose ganglion, solitary tract nucleus, and dorsal motor vagal nucleus.

结果显示：在餵食四氯化碳四周起，其交感神经回路上的T7-T10背根神经节、T7-T10脊髓侧角中间外侧细胞柱之交感节前神经元以及位於腹腔神经节的交感节后神经元所含之一氧化氮合成下降；而副交感神经回路上的小结神经节、孤立径核以及迷走神经背侧运动核所含之一氧化氮合成亦下降。

Based on analyzing regression analysis, neural network and the least square support vector machines that the three soft computing methods fitting for data fitting, in the paper try to use nonlinear regression analysis, the BP neural network based on Levenberg-Marquardt training algorithm, radial basis function neural network on orthogonal least square training algorithm and least square support vector machines for tracking the position of glass plate.

本文在分析适于数据拟合的回归分析、神经网络、最小二乘支持向量机这三种"软计算"方法的基础上，尝试将非线性回归分析方法，基于Levenberg-Marquardt算法的BP神经网络，基于正交最小二乘训练算法的径向基函数神经网络和最小二乘支持向量机应用于玻璃板位的跟踪中。

Methods:Fifty adult cadaveric specimens(100 sides) fixed with formalin were dissected,analyzed,and the palmar neurovascular structures,the flexor retinaculum,and their distance to the distal wrist crease were measured.

在行腕管探查术及掌中间隙引流术时，尤其是在环指中轴线上进行的内窥镜腕管松解术时易损伤邻近腕横韧带的神经血管，如尺/正中神经交通支[1]，尺神经[2]和掌浅弓[3]。

Selective brachial plexus and lumber nerve roots rhizotomy is a good and effective method to reduce spasticity of upper extrimity.

我们根据臂丛神经功能解剖特点首创设计了选择性臂丛神经根切断术和选择性腰骶神经根切断术治疗脑瘫引起的上、下肢痉挛，取得明显疗效。

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。