基于民族文字的在线虚拟键盘实现技术

以在线藏文虚拟键盘为例,描述了在线民族文字虚拟键盘的实现技术,并在字符编码、键盘布局、浏览器兼容等方面进行了详细阐述。在线民族文字虚拟键盘为用户提供一个与国家标准键盘布局相对应的民族文字虚拟键盘,其具有直观、形象、易操作的特点。民族文字的在线虚拟键盘技术的实现,改善了B/S模式下民族文字输入不便的问题。     

电子收款机软件方案设计方法

电子收款机是一种基于键盘控制并具有复杂键序的单片机系统,合理有效地描述出各种功能键的键序组合以及功能键在各种情况下的功能含义,是一个成功的电子收款机软件设计方案的重要组成部分.本文中,介绍一种基于“键盘状态表”和“状态转移表”进行电子收款机软件设计方案描述的方法,这种方法已在的一种电子收款机软件方案设计过程中得到验证.     

脑-机接口信号中靶标的贝叶斯搜索

提出了脑控虚拟键盘上按钮的编码以每个按钮中靶标出现的时间次序安排,搜索出靶信号出现的位置就能探测受试者的选择.以基于最小误判准则的贝叶斯分类器,对靶及非靶两类刺激信号进行分类训练,分别在通道和时段选择上进行了特征提取研究,得到识别率最高的5个通道中最佳时段的训练参数.利用训练了的分类器,对受试者每次按钮选择所记录到的EEG信号中可能出现靶刺激的位置进行搜索,来判断受试者所选择的按钮.结果表明：最佳通道P 8获得了72.50%的平均正确识别率,该结果为构建一个实时的脑控拼写装置打下了基础.     

嵌入式设备下SPI接口扩展PS2键盘的设计与实现

本文嵌入式系统为例,介绍在arm平台下Linux环境中扩展标准PS2键盘的设计和实现方案.该方案采用SPI总线来实现键盘和主机之间数据的传输.文中给出了SPI基本原理,PS2协议的介绍以及整个软件实现的流程图。     

可网络化管理的高精度多路数控直流电源

介绍了一款以AT89C51单片机为核心的新颖的直流稳压电源的设计.该电源能同步输出正负电压值,通过电源面板键盘对电压值的预置和步进调节实现独立工作,也可通过PC机的"虚拟键盘"实现远程控制和网络化管理.系统具有通用性好、可靠性高、线路简单、步进精度高、显示直观、使用方便等优点,有较高的性价比.     

基于3dsMax和VRP的数字博物馆虚拟漫游系统设计与实现

介绍了利用点云数据在3ds Max中构建学校博物馆三维模型的思路、方法和流程,以及结合VRP平台建立虚拟漫游场景的步骤,列举了场景建立过程中遇到的问题及解决方法.一方面使用户可随着视角的变换观察整个场景的结构,另外还实现了漫游过程中的障碍物检测和碰撞检测功能,通过键盘和鼠标实现虚拟场景的人机交互控制,为虚拟漫游场景的构建工作提供了借鉴.     

基于LabVIEW的虚拟信号发生和数据采集系统

为实现非线性电介质测试信号的发生和采集,采用凌华DAQ-2005采集卡和LabVIEW语言构建了虚拟信号发生和数据采集系统,详细介绍了该方案的硬件组成和软件设计方法,利用LabVIEW开发了系统软件,通过实测数据证明了方案的实用性.该系统同步性能好,组成简单,易于调节,便于功能扩充.这种基于虚拟仪器的设计方案具有重要的实用意义.     

科学搜搜

世界最薄键盘 英国科学家发明了世界上最薄的键盘，厚度仅为0．5毫米。不仅如此，这款薄如纸的键盘还很柔软，能够弯曲，这无疑会给未来的计算机用户带来全新的体验。如果把它和平板滓脑或手机连接，使用者将拥有一个方便携滞的全尺寸薄键盘，     

虚拟可编程控制器的控制逻辑设计

本文深入研究了PLC的编程输入逻辑和运行监控功能,设计出具有很强针对性的键盘识别逻辑,并在此基础上自主开发了虚拟PLC软件系统。     

基于Qtopia的嵌入式Linux俄文环境解决方案

针对嵌入式智能设备的俄文图形界面的需要,进行了基于嵌入式nnux平台的Qtopia俄文化开发,介绍了Qtopia的俄文化过程以及俄文虚拟键盘的设计。     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

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