考虑性别因素的驾驶人疲劳状态HRV非线性特征

通过心率变异性(HRV)的非线性特征,研究了疲劳对驾驶人自主神经系统(ANS)的影响.招募被试进行模拟驾驶实验,记录实验过程中的心电信号.通过Poincaré散点图、近似熵和样本熵等非线性方法,提取13个HRV特征.分析所有被试不同精神状态HRV特征的差异,研究特定性别的被试从清醒状态到疲劳状态HRV特征的变化,分别比较清醒和疲劳状态HRV特征的性别差异.对所有被试,5个特征在疲劳状态显著(Mann-Whitney U检验,p0.01)上升;男性2个特征在疲劳状态显著上升;女性3个特征在疲劳状态显著上升.清醒状态仅有1个特征在男性与女性之间存在显著性差异,而疲劳状态有5个特征存在显著性差异.驾驶人在疲劳状态ANS的变异性和/或复杂度增加,并且存在性别差异.与清醒状态相比,男性与女性ANS的变异性和/或复杂度在疲劳状态存在更多差异.     

基于改进算法的ART2网络用于微晶玻璃颜色分类

微晶玻璃颜色分类是最终控制产品质量的重要步骤，作者改进了传统ART2网络的学习算法，借用典型向量的概念，以模式的近似均值作为典型向量来飞速学习新模式，改进学习算法极大地改善了ART2网络的模式漂移现象，而且短搜索振荡过程，文中分析了微晶玻璃颜色分量的统计信息，经过适当变换高维颜色特征映射到16维特征空间中的一个超平面上，以超平面上的特征点作为改进算法ART2网络的输入进入网络分类器进行学习分类，实验证明改进算法网络用于微晶玻璃颜色分类时，运行正确，可靠，具有很高的正确识别率。     

基于ART2网络的运动目标检测

从仿生学角度出发,分析了ART2网络和视网膜细胞结构之间的类别关系,通过扩展感知能力和调整警戒值等方式完备ART2网络单元的功能,运用ART2网络模拟视网膜的信息处理过程,提出了一种用ART2网络模拟视觉细胞来处理像素点的色彩信息的有效处理方法,并给出了该方法在运动目标检测领域的一个应用实例。试验结果表明,用ART2网络仿生处理符合人眼观察事物的生理和心理特点,能较好地处理幽灵和无序扰动等常见问题。     

基于双重竞争共振机制的模糊ART神经网络

提出了一种基于双重竞争共振机制的模糊ART神经网络模型．该模型将输入节点的竞争共振机制引入到输出类别节点,采用输入节点和输出节点双重竞争共振机制,形成了一种新的模糊ART结构,解决了传统模糊ART网络记忆不稳定问题．将该模型应用于图像分割,解决了传统模糊ART网络图像分割结果随警戒参数的升高而出现的过度分割．实验结果表明,和原始模糊ART算法相比,新算法具有更好的分类识别性能,在飞机目标识别中平均识别率比原始算法提高3％～5％．     

ASN.1的应用开发

主要研究移动通信系统中ANS．1的应用开发过程和编码规则，首先简单介绍ANS．1的基本概念，然后简单描述ANS．1的应用开发过程，最后结合一个例子，重点介绍BER编码规则和PER编码规则，这些研究对移动通信系统中的协议开发有重要的指导意义．     

用于手写字符识别的SA-ART神经网络模型

针对前馈 BP网络和 ART网络对手写字符识别的不足以及人的认知机制 ,在大量实践和理论分析的基础上 ,提出具有选择注意机制的 ART模型 SA- ART(Selective Attention-Adaptive Resonance Theory) .经实际检测 ,识别精度有明显提高 .     

基于ART2A-E神经网络的数字调制识别

在分析经典的ART2／2A网络基础上,提出了一种基于ART2A—E神经网络的自动数字调制识别分类器,并测试了分类器对2PSK、4PSK、OQPSK、GMSK、π/4OQPSK、4ASK6种数字调制信号的识别能力．仿真结果表明,该分类器对这6种数字调制信号在信噪比为8dB条件下识别率达到90％以上,而且在不影响网络已记忆模式情况下能自动对未学习模式进行新的聚类,提高了自动调制分类器的自适应性和可扩展性．减少了错判概率．     

玉米大斑病菌HT-毒素特异性组分与原生质膜蛋白互作研究

以玉米叶片原生质为研究对象,以ANS(1-苯胺基-8-萘磺酸)作荧光探剂,用荧光标记法研究了毒素与质膜蛋白的互作.在被ANS标记后的原生质悬浮液中加入不同浓度HT-毒素后,ANS荧光强度明显增加,呈现出了剂量—效应关系,表明HT-毒素与质膜上ANS某些受体发生了互作.本实验采用2种试剂,从2个角度表明了ANS受体和质膜上存在的毒素受体具有蛋白特性.初步推测HT-毒素特异性组分的原初作用位点在质膜外侧.     

一种新的FART分类器

提出了一类基于贴近度理论的模糊ART神经网络模型，简称为CBFART（Closeness Based Fuzzy ART）模型，将模糊数学中的贴近度（Closeness)和择近原则（Closest Principle)概念与自适应共振理论（ART）相结合，形成了一种新的网络模型。该模型的学习以匹配－委托循环为特点，网络分类遵循择近原则，补码编码、匹配－委托和快速委托－慢性重编码方案相结合，保证了网络学习的收敛性和稳定性，并可以做到一次性学习、提高了学习速度。文中对高维样本进行分类仿真，给出了仿真结果，分析表明该模型具有良好的聚类特性，能够稳定地对高维样本进行分类。     

基于ART1网络的图书分类方法

阐述了ART1网络的基本原理,提出了一种基于ART1网络的图书分类方法,实验表明,ART1网络有较强的抗噪声能力,可有效地实现图书分类,并能产生新的分类,有较好的应用价值。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the