基于Android平台与Web服务器的课程管理信息系统

基于Android平台搭建了一个客户端/服务器结构下的课程管理信息系统。客户端为智能手机,使用Android Studio开发,服务器利用Tomcat搭建Web容器,用开发工具My Eclipse10对服务器编程,并用My SQL数据库开发环境提供数据层应用。所用到的开发语言有Java和SQL,最终实现了手机客户端添加、修改、删除课程,课程提醒,用户注册、登录功能,以及课程信息通过Http远程上传和下载。Web端具备后台查看已注册用户的功能。本系统能够为学生选修课程和教师管理课程信息提供方便。     

基于Android的移动电子商务系统的设计与实现

移动互联网是一个发展迅速、充满活力的领域,具有广阔的应用前景。电子商务作为移动互联应用的一个重要应用层面,正在逐渐改变人们在信息时代的生活方式。本文首先针对电子商务交易平台的具体的项努需求,运用Android平台应用开发的方法,在Android平台上设计并实现了基于该平台的移动电子商务软件应用。对程序开发过程中设计Android组件和应用开发技术做了研究和讨论,并实现了与客户端对接的服务器系统。     

基于Android的移动校园客户端的研究与实现

研究了Android平台的架构及相关开发技术,利用Android与Web开发结合的设计方式,使用HTML5+jQuery Mobile、MySQL、SQlite等技术,设计并实现了一款基于Android平台的移动校园客户端。通过客户端、本地数据和Web服务器端与数据库之间的信息交互和传递,提高了校园信息的实时传播效率,完善校园移动化平台的建设。     

Android平台的即时通信系统客户端设计方案

为解决在基于Linux操作系统的Android手机平台上即时通信问题,实现在系统客户端进行文本、图片、音乐的传送和播放。采用Java语言环境下Android应用开发工具和API接口,并使用Eclipse加上Android集成开发环境插件为手段,对客户端架构、应用模块框架、数据存储、主要功能和核心模块开发技术等全方面分析,从而提供了实现即时通信系统的客户端解决方案。     

基于Qt on Android平台的空气质量监测系统手机客户端设计

利用Qt on Android平台设计出了一种针对空气质量监测系统的Android手机客户端,该客户端实现了手机与服务器的信息交互,使得用户可以通过手机方便快捷的查询选定监测端当前的空气质量数据,实现了室内环境监测的网络化。同时为C/C++程序员在Android平台开发APP提供了范例。     

基于Android平台的汇集团购信息业务描述

提出了一种基于Android平台的汇集团购信息的业务模型.该模型首先基于Linux的平台建立一个小型的抓取各团购网站信息的服务器,并且设置一个守护线程等待移动客户端的连接,然后基于Android系统开发技术开发浏览团购信息的移动客户端,该客户端可从服务器上获得相关团购信息.测试表明该模型运行稳定,具有较好的市场推广前景.     

基于B/S模式的管线网络报检及状态跟踪系统的应用

针对生产单位需求,设计研制出了管线网络报检和施工状态自动跟踪系统。本系统基于Java平台,采用Java Web的B/S开发模式和MVC框架,同时设计了相应的基于Android技术的条形码扫描移动客户端软件,实现了管线网络化报检和状态跟踪的自动化跟踪。     

基于Android的学生管理部门信息共享交流系统研发

大学生在刚进入大学时会对校园感到陌生,由于学生社团等集体组织的宣传不到位,学生可能会错失与自己兴趣相投的学生组织,从而错过一些提高能力,增进兴趣,交友学习的机会。基于此,文章设计了基于Android的学生管理部门信息共享交流系统,为学生提供了了解各个学生组织的机会,并促进了各学生组织之间的交流,有利于学生的全面发展。文章所设计的APP基于Android操作系统,分为服务器和客户端两部分,客户端部分以Java语言为基础在Windows上使用Android Studio软件开发;界面设计使用XML,且还加入了设计界面的Material Design。服务器部分为通过Web服务器实现了客户端和数据库交互,数据库采用My SQL。最后该APP在真实的Android设备上测试通过。     

基于Android的动物医疗交互APP的设计与实现

基于市场上医疗类APP的开发现状,及动物医疗的实际需求,提出了基于Android的动物医疗交互的系统平台,阐述了该系统的设计思想、开发模型、主要功能模块以及关键技术的设计与实现.该系统实现了Tomcat服务器端的搭建和MySQL数据库配置,使用HttpClient实现了医疗客户端和服务器端的信息交流.该系统为养殖户与专家提供了交互平台,所收集的信息将为下一步实现智能交互提供必要的数据.     

基于Android平台的移动图书馆客户端设计与实现

在智能手机软件不断发展的今天,很多传统PC机上的应用正在向智能手机客户端转移.基于Android平台和智能手机的移动图书馆系统实现了客户端与服务器的通讯,使得用户可以通过手机客户端访问和查询各类图书信息.设计了系统框架及功能模块,描述通过无线通信实现客户端与服务器间的通讯的方法,并列出主要模块的实现算法.     

Development of the readout system for waveguide multilayer optical card

Waveguide multilayer optical card （WMOC） is a novel storage device of three-dimensional optical information. An advanced readout system fitting for the WMOC is introduced in this paper. The hardware mainly consists of the light source for reading, WMOC, motorized stages addressing unit, microscope imaging unit, CCD detecting unit and PC controlling ＆ processing unit. The movement of the precision motorized stage is controlled by the computer through Visual Basic （VB） language in software. A control panel is also designed to get the layer address and the page address through which the position of the motorized stages can be changed. The WMOC readout system is easy to manage and the readout result is directly displayed on computer monitor.     

Nanoimprint Lithography -A Next Generation High Volume Lithography Technique

IntroductionNanoimprint Lithography is a well-acknowl-edged low cost, high resolution, large area pattern-ing process. It includes the most promising methods,high-pressure hot embossing lithography (HEL) [2],UV-cured imprinting (UV-NIL) [3] and micro contactprinting (m-CP, MCP) [4]. Curing of the imprintedstructures is either done by subsequent UV-lightexposure in the case of UV-NIL or by cooling downbelow the glass transition temperature of the ther-moplastic material in case of HEL…     

Collinear phase-matching study of terahertz-wave generation via difference frequency mixed in GaAs and Inp

The collinearly phase-matching condition of terahertz-wave generation via difference frequency mixed in GaAs and InP is theoretically studied. In collinear phase-matching, the optimum phase-matching wave hands of these two crystals are calculated. The optimum phase-matching wave bands in GaAs and lnP are 0.95-1.38μm and 0.7-0.96μm respectively. The influence of the wavelength choice of the pump wave on the coherent length in THz-wave tuning is also discussed. The influence of the temperature alteration on the phase-matching and the temperature tuning properties in GaAs crystal are calculated and analyzed. It can serve for the following experiments as a theoretical evidence and a reference as well.     

Effects of the alloy compositions on the phonon-polaritons in ternary mixed crystals

Composition dependence of bulk and surface phonon-polaritons in ternary mixed crystals are studied in the framework of the modified random-element-isodisplacement model and the Bom-Huang approximation. The numerical results for Several Ⅱ - Ⅵ and Ⅲ- Ⅴ compound systems are performed, and the polariton frequencies as functions of the compositions for ternary mixed crystals AlxGa1-xAs, GaPxAS1-x, ZnSxSe1-x, GaAsxSb1-x, GaxIn1-xP, and ZnxCd1-xS as examples are given and discussed. The results show that the dependence of the energies of two branches of bulk phonon-polaritons which have phonon-like characteristics, and surface phonon-polaritons on the compositions of ternary mixed crystals are nonlinear and different from those of the corresponding binary systems.     

Influence of PVK ： NPB hole transporting layer on the characteristics of organic light-emitting devices

A doping system consisting of NPB and PVK is employed as a composite hole transporting layer （CHTL）. By adjusting the component ratio of the doping system, a series of devices with different concentration proportion of PVK ： NPB are constracted. The result shows that doping concentration of NPB enhances the competence of hole transporting ability, and modifies the recombination region of charge as well as affects the surface morphology of doped film. Optimum device with a maximum brightness of 7852 cd/m^2 and a power efficiency of 1.75 lm/W has been obtained by choosing a concentration proportion of PVK ： NPB at 1：3.     

New insert layer structure OLEDs

An insert layer structure organic electroluminescent device（OLED） based on a new luminescent material （Zn（salen）） is fabricated. The configuration of the device is ITO/CuPc/NPD/Zn（salen）/Liq/LiF/A1/CuPc/NPD/Zn（salen）/Liq/LiF/A1. Effective insert electrode layers comprising LiF（1nm）/Al（5 nm） are used as a single semitransparent mirror, and bilayer cathode LiF（1 nm）/A1（100 nm） is used as a reflecting mirror. The two mirrors form a Fabry-Perot microcavity and two emissive units. The maximum brightness and luminous efficiency reach 674 cd/m^2 and 2.652 cd/A, respectively, which are 2.1 and 3.7 times higher than the conventional device, respectively. The superior brightness and luminous efficiency over conventional single-unit devices are attributed to microcavity effect.     

Analysis of error performance on Turbo coded FDPIM

Due to variable symbol length of digital pulse interval modulation（DPIM）, it is difficult to analyze the error performances of Turbo coded DPIM. To solve this problem, a fixed-length digital pulse interval modulation（FDPIM） method is provided. The FDPIM modulation structure is introduced. The packet error rates of uncoded FDPIM are analyzed and compared with that of DPIM. Bit error rates of Turbo coded FDPIM are simulated based on three kinds of analytical models under weak turbulence channel. The results show that packet error rate of uncoded FDPIM is inferior to that of uncoded DPIM. However, FDPIM is easy to be implemented and easy to be combined, with Turbo code for soft-decision because of its fixed length. Besides, the introduction of Turbo code in this modulation can decrease the average power about 10 dBm, which means that it can improve the error performance of the system effectively.     

A method for calculating the center position of collimated light

It is a key problem to accurately calculate beam spots＇ center of measuring the warp by using a collimated laser. A new method, named double geometrical center method （DGCM）, is put forward for the first time. In this method, a plane wave perpendicularly irradiates an aperture stop, and a charge couple device （CCD） is employed to receive the diffraction-beam spots, then the geometrical centers of the fast and the second diffraction-beam spots are calculated respectively, and their mean value is regarded as the center of datum beam. In face of such adverse instances as laser intension distributing defectively, part of the image being saturated, this method can still work well. What＇s more, this method can detect whether an unacceptable error exits in the courses of image receiving, processing and calculating. The experimental results indicate the precision of this method is high.     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Preparation and Characterization of TaN ALD Precursors

High purity organic-tantalum precursors for thin film ALD TaN were synthesized and characterized.Vapor pressure and thermal stability of these precursors were studied.From the vapor pressure analysis,it was found that TBTEMT has a higher vapor pressure than any other published liquid TaN precursor,including TBTDET,TAITMATA,and IPTDET.Thermal stability of the alkyl groups on the precursors was investigated using a 1H NMR technique.The results indicated that the tertbutylimino group is the most stable group on TBTDET and TBTEMT as compared to the dialkylamido groups.Thermal stability of TaN precursors decreased in the following order:TBTDET ＞ PDMAT ＞ TBTEMT.In conclusion,precursor vapor pressure and thermal stability were tuned by making slight variations in the ligand sphere around the metal center.