基于SPCA556G卫星导航系统的JAVA软件平台移植

介绍了Java编程语言的J2ME平台向凌阳SPCA556G平台的移植.在设计过程中首先对开发平台,GPS的定位原理,NMEA0183协议进行了了解.然后深入的分析了J2ME平台的结构,根据KVM和MIDP的各自特性分别进行移植,最终实现J2ME的移植要求.     

phoneME在ARM嵌入式平台上的移植与应用

J2ME主要针对嵌入式类电子设备,是一种高度优化的Java运行环境。它是Java 2的一个组成部分,能够将Java语言与平台无关的特性移植到小型电子设备上,允许移动无线设备之间共享应用程序。而嵌入式系统如今发展越来越迅速,凭借嵌入式操作系统进行各个开源软件在嵌入式平台上的移植操作,发挥其更强大的软件系统功能。本文旨在将这两种现在比较流行的技术结合起来,即以phoneME这款开源的J2ME软件作为研究对象,通过搭建交叉编译环境和Qtopia库等相关基础配置,将其移植到ARM嵌入式Linux系统上。之后通过运行多个MIDlet应用完成了相关的测试和验证。     

一个移动票务系统的设计与实现

结合J2ME与J2EE在移动商务应用中的优势,提出设计基于J2ME和J2EE的移动电影订票系统。     

J2ME中的数据管理技术研究

J2ME为小型设备带来了Java语言的跨平台功能,还拥有java语言所具有的强大的安全功能,现在已成为研究的热点.简要介绍了J2ME和J2ME数据管理中的关键技术及一些重要概念,分析了CLDC及CDC设备上数据管理的方式J2ME的应用程序在一个RMS中存储信息,使用RMS保存和检索数据.在CDC设备上运行的J2ME应用程序也可以通过JDBC接口使用DBMS对数据进行管理.     

一种基于J2ME的轻量级MVC框架设计

J2ME移动设备有限的计算能力和存储资源无法满足目前适用于桌面或Web应用中的开发框架的资源需求。通过借鉴J2EE平台流行MVC框架Struts,针对J2ME平台特点,在网络连接、视图管理和数据存储等模块进行适当地裁减和优化,提出了一种基于J2ME的轻量级MVC开发框架—Mobile Struts。分析发现,该框架有利于明确J2ME应用软件开发任务分工、提高模块化程度、缩短开发周期。     

谈J2ME访问SQL SERVER远程数据库

J2ME随着无线设备的发展越来越引人关注。本文介绍了J2ME在手机端跟远程的SQL SERVER数据库的通信实现方式,并以实例详细解释了如何实现,且探讨了J2ME的发展。     

手机应用程序开发浅谈

随着手机从简单的话音功能向数据传输发展,移动应用的内容已变得多姿多彩,手机游戏、在线新闻、手机电视、金融及商务应用等等这些功能都不断地在手机上实现。相应软件的需求量也随之增大。本文通过对J2ME技术的概述,首先分析了J2ME体系的总体架构,解释了CDC/CLDC和Profile的基本内容,同时,通过总结和分析手机应用软件的开发流程和代码框架的设计,详细分析了J2ME技术在手机应用软件开发中的应用,最后简要介绍了一下基于J2ME手机程序的优化的问题。     

基于J2ME持久存储技术的分析与实现

在分析J2ME的平台特点和体系结构及其RMS的体系结构的基础上，结合基于J2ME的学生个人信息管理系统中课程表的存取管理，使用PAD图进行具体分析，详细探讨了数据在手机中的存储和读取过程。     

基于J2ME的Java手机软件 --足球彩票手机投注系统的设计与实现

本文讨论了在J2ME规范的基础上，集成Java系列技术(J2ME、J2SE和J2EE中的servlet和JSP)，组成了一个功能强大的纯Java软件系统。作者将基于J2ME的Java手机软件这一思路与国内新兴行业——足球彩票行业相结合，研发了足球彩票手机投注系统。该系统以足球彩票发行和运行规则为依据，以足球彩票数据库为中心，从系统管理员和投注用户两个角度出发，分模块实现了整个系统。     

基于J2ME的手机订票系统的设计与实现

J2ME是近几年来诞生并飞速发展的一项新的开发技术。它定位在消费性电子产品的应用上，特别是移动无线设备上。对设备的智能化，提供了革命性的解决方案。本文介绍了J2ME的相关技术及其在订票系统中的开发应用。     

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.     

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     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

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

正~~