人机一体化系统的高级接口——大脑计算机接口

介绍了人机一体化系统的概念,提出大脑计算机接口是“人机耦合”型人机一体化系统关键技术。阐述了大脑计算机接口原理、大脑计算机接口系统硬件构成、大脑计算机接口技术的研究方法,大脑计算机接口技术的应用和展望,对BCI的研究和人机一体化系统和技术的发展具有重要意义。     

人机一体化系统的高级接口——大脑计算机接口

介绍了人机一体化系统的概念,提出大脑计算机接口是"人机耦合"型人机一体化系统关键技术.阐述了大脑计算机接口原理、大脑计算机接口系统硬件构成、大脑计算机接口技术的研究方法,大脑计算机接口技术的应用和展望,对BCI的研究和人机一体化系统和技术的发展具有重要意义.     

USB总线在自动测试中的应用

提出自动测试（或虚拟仪器）的接口技术应跟随通用计算机接口技术与标准的原则，即在自动测试系统中采用通用串行总线（USB）接口是发展的方向．具体论述了USB的基本特性和用于自动测试系统中的开发方法与应用前景．     

基于ARM架构内核设备中USB接口的设计

USB(Universal Serial Bus,通用串行总线接口)是一种广泛应用的新型总线,为计算机外围设备输入输出提供了新的接口标准.根据嵌入式系统的特点,将USB接口技术与嵌入式系统相结合,以基于S3C44B0X微处理器的USB接口设计为例,采用ISP1581 USB2.0标准组件,设计一款适合于嵌入式设备应用的USB高速控制器.     

基于嵌入式系统的USB/RS-232接口设计

根据嵌入式系统的特点,将USB接口技术与嵌入式系统相结合,给出了基于嵌入式系统的USB/RS-232接口的具体解决方案,并给出了其关键技术的详细介绍。     

MCS-51扩展USB接口的设计与实现

指出了专用的USB应用开发系统价格较高，采用带USB接口的微处理器会导致学习任务增加、开发周期延长，介绍了USB接口技术的特点及其技术要素，提出了以USBN9604扩展MCS—51单片机USB接口来有效地解决这些问题的方法．     

脑机接口技术研究方法

脑机接口（BCI）是一种基于脑电信号实现人脑与计算机或其他电子设备通讯和控制的系统，它不依赖人体的外周神经神经系统及肌肉组织，是一种新的人机接口方式，在康复医学和控制等领域有应用前景，近年来，脑机接口技术发展迅速。概述了采用事件相关电位P300、稳态视觉诱发电位（SSVEP）、事件相关同步或去同步9ERS／ERD）皮层慢电位（SCP）、自发EEG信号、植入电极等实现脑机接口技术的研究方法，讨论和比较了各种研究方法的特点和局限，介绍了脑机接口的发展现状和存在的问题，并对其应用前景进行了展望。     

基于DSP平台的USB接口设计及应用

USB作为一种新型的接口技术，以其简单易用、速度快等特点而备受关注．但由于USB接口协议复杂，且涉及到WINDOWS操作系统的响应问题，使得USB设备的开发较困难．该文介绍基于DSP的USB接口硬件设计、软件编程及应用，详细论述了USB的固件编程及应注意的问题，并给出USB接口在Mass Storage中的应用．经实际验证，PC机能够顺利的识别USB设备并通过USB接口与其进行数据的读写交换．随着DSP在数字信号处理上的广泛应用，USB接口将在DSP开发系统中具有广泛的应用价值．     

USB接口的现场总线硬件研究

随着现场总线技术和计算机与外设接口技术的发展，建立现场总线网络节点和监控计算机之间可靠的通讯连接更加重要。本文提出了一种使用USB接口实现CAN总线网络与计算机连接的方案，并结合设计实例，论述了系统硬件构成和固件的设计方法。     

基于MINIGUI系统灌溉控制人性化计算机界面设计

人性化计算机界面逐渐成为嵌入式系统的重要组成部分．各种嵌入式图形用户界面开发使嵌入式系统操作更简单更高效．讨论内客是μClinux与MiniGUI接口和基于MiniGUI人性化计算机图形界面构造．S3C44B0X（三星微处理器）,硬件平台由S3C44B0X、STN LCD和四线抗干扰触摸面板组成．系统可为灌溉操作者提供一个可视化友好操作环境．     

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.     

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     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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Brief Introduction to “Journal of Jilin University( Science Edition) ”

<正>"Journal of Jilin University(Science Edition)"is a comprehensive academic journal in the fields of science sponsored by Jilin University and administrated by the Ministry of Education of the Peoples Republic of China.The journal started publication in 1955.The original name at starting publication was"Journal of Natural Science of Northeast People University",which was changed into"Acta Scientiarum Naturalium Universitatis Jilinensis"in 1958 owing to the name change of the university.The present journal name has