使用JSP动态生成SVG统计图

使用JSP技术由统计数据可动态生成SVG图形.在基于B/S三层结构的学生考试成绩统计系统中,前端使用JSP技术,score_query.jsp页面根据试卷名与分数段查询得到考试成绩列表,再由页面displaychart.jsp统计结果生成SVG图形.     

多语言Web网站的框架设计与实现

以路由器多语言Web网站开发为例,讨论多语言Web网站的框架设计与实现.通过选用动态部分复制框架,对HTML和JavaScript文件中涉及不同语言文字处进行修改,并利用cookie实现其语言协商机制,添加过滤函数以控制页面载入,最终实现按指定语言显示页面.     

基于JSP和数据库技术的文件上传

基于JSP和数据库技术的文件上传,利用JSP/JavaBean 开发上传程序,并根据JDBC及SQL Server的Image存储特性从数据库编写文件以实现各种类型文件的存储.上传文件可直接存储到目录;上传文件较多,则采用数据库管理上传文件或图片.上传文件操作包括提交上传文件请求页面(upfile.jsp)和处理上传的文件(upload.jsp).     

COM的C/A/S三层软件结构开发

基于COM的C/A/S三层软件结构是客户层检查输入数据、显示输出数据;业务逻辑层处理客户层请求、完成计算;数据服务层负责数据库.COM组件使用ActiveX控件、ActiveX文档和自动代码组件.选择ATL COM AppWizard并输入工程名,向导自动生成组件框架,编译成DLL文件.并选择MFC ActiveX control Wizard创建ActiveX控件,用数据库管理系统创建数据库文件.     

基于XML的界面管理技术

基于XML的界面管理技术,包括界面配置、界面动态生成和界面定制三部分.通过DOM API读取XML配置文件的表示层信息,自定义数据存取类读取数据库中的数据层信息,在运行时循环生成界面元素,动态生成界面.界面和菜单功能的重新配置,通过修改MainUI.xml文件实现.界面内容的更改,通过修改XML节点和属性值等界面元素实现.并用某军事项目管理信息系统对其进行了验证.     

Linux 2.6内核分析

Linux操作系统内核由进程和内存管理、文件系统、网络接口、进程间通信模块构成.内核程序使用进程标识号(PID)标识过程.内存管理程序采用页式管理机制,通过页面、中间目录及页面表三个层次实现从线形地址到物理地址的映射.其网络接口模块分为:网络设备接口、网络接口核心、网络协议族及网络接口socket层.     

J2EE中基于容器管理的Web客户端安全验证

2EE中基于容器的Web客户端安全验证采用了安全编程和HTTP、表单和客户端证书管理.在Web层安全编程并加入客户端安全逻辑判断,通过接口判断调用者是否合法.基于表单的验证允许自定义登陆页面收集用户验证信息.     

基于WCF多层架构的M-Commerce系统设计与应用

针对软件开发普遍存在的系统结构复杂,开发效率不高和系统移植性、扩展性和维护性较差等问题,提出一套基于WCF的.NET多层架构开发模式的整体项目解决方案.在保持传统3层架构设计的页面表示层、基本逻辑层和数据访问层的设计及代码不变的基础上,增加Web服务层,使用WCF技术对传统3层架构进行封装和扩展,给出一套由传统3层架构向基于服务架构SOA无缝转换的多层架构整体解决方案.该解决方案可以创建新的分布式项目,或者有效重组过去所投资的基于传统3层架构设计开发的系统软硬件,使之再利用并赋予其新的价值,降低成本.结合当前流行的移动商务项目,实际应用此解决方案有效.     

基于XML导航树的交互式电子技术手册

基于XML的交互式电子技术手册(IETM)),采用导航树技术.其制作步骤包括:形成XML数据文档,用XSL设计XML文档的显示形式,将XML文档和XSL文件结合,生成浏览页面,在Browser中浏览数据.其中涉及四个文件:树型的数据和结构,树型的样式单,树型结构的遍历,树型结构的客户端显示.     

刀具准备过程集成建模与智能跟踪方法研究

为了提高刀具使用效率、降低刀具管理成本和刀具准备的错误率,提出了刀具准备过程集成建模与智能跟踪方法.该方法从刀具全生命周期出发,在刀具准备阶段,给出刀具选择策略、匹配方法并建立集成化的刀具配置、仿真和优化模型,实现刀具的柔性化配置、刀具配置方案和刀轨文件的验证与优化.在刀具使用阶段,结合无线射频识别(RFID)和多智能体( MAS)技术,实时采集刀具数据和智能跟踪刀具位置,以支持刀具的快速配置并实现各种刀具管理模块的协调运行.基于该刀具管理方法,开发了面向刀具全生命周期的管控一体化系统.通过实际应用验证了该方法的有效性和可行性.     

Nitrosation and Nitration of Tetraacetyldibenzylhexaazaisowurtzitane

Tetraacetyldibenzylhitane (TADBIW) was subjected to debenzylation by nitrosating with inorganic materials available commercially to synthesize tetraacetyldinitrosohexaazaisowurtzitane (TADNSIW). TADNSIW was purified, and its structure was determined by FTIR, 1H NMR, MS and element analysis. The debenzylation reaction of TADBIW gave quantitative benzaldehyde as a by-product. This indicates that the reaction produces an imine cation as an intermediate. Hexanitrohexaazaisowurtzitane (HNIW) was prepared from unpurified TADNSIW with the yield over 96.0 % and the purity more than 98.0 %. And the mechanism of the reaction from TADNSIW to HNIW is proposed to be oxidation of nitroso and nitration of acetyl on the molecule of TADNSIW, This reaction system involved is simple, and the reaction can complete within a short time and under mild conditions. The product can be easily to separate and the waste disposed readily.     

A Robust Algorithm for Watermarking 2D Vector Maps with Low Shape-Distortions

The technique of watermarking has been introduced into 2D vector maps for many potential applications such as protecting the copyright of important GIS （geographical information system） data and tracing the data source of military maps. In most previous works, although the validity of the map data could be preserved during the embedding procedure, the shape-distortions of the map elements are usually neglected which would tend to degrade the invisibility of the watermarking schemes. A shape-preserving algorithm for watermarking 2D vector maps is presented in this paper. A 1D distance sequence extracted from the original map is adopted as the cover data instead of 2D coordinates. A watermark bit is represented by changing the distributions of the cover data. The embedding procedure induces lower shape-distortions than in former works. Experimental results indicate better invisibility of the proposed scheme, as well as its robustness to certain attacks such as map simplification, interpolation, additive noise and most geometric transforms.     

Open Rule-setting System Applied to Conceptual Design of Engines

Open rule-setting method advanced in this paper concentrates on providing designers of engines with a convenient way to express their design innovations and develop the expected prototypes in the early CAD stage, and constitute effective models for the following analysis process of CAE and CAPP. The problems arisen in the process of conceptual design with the traditional experience-based development method are analyzed. Based on those analyses, open rule-setting method is presented and some associated technical problems are discussed. The functional framework of open rule-setting system was built as software engineering methods. The speciality of the engine product as a kind of complex product and the requirement of the engine product based on its structural particularity to rule-setting system are considered carefully. A demonstration is supplied to illustrate how the open rule-setting method enhances the efficiency and quality of the engine conceptual design.     

Research on Linux Network Device Driver

By analyzing the working principle of Linux network device driver, discussing the Linux network driver structure and its key technologies, the general network driver structure and its design methodologies in Linux system are summarized. Through modifying the network device driver of Linux device driver 3rd version snull, c and improving the COW technology, the Zero-Copy technology in Linux （kernel version 2.6.11 ） is implemented. In the end, the success test tells us that the thorough analysis of network device driver is the foundation of many applications, and it also provides a certain improvement to a lot of real applications, even to military application development.     

Improvement and Experiment of the Reamer in Vibra Cutter Against Wave Edge of Titanium Sheet Alloy Parts

By analyzing the influencing factors of part quality making of sheet alloy of titanium by vibra cutter, the shape of upper reamer is set as cylinder and wedge-shaped form, and the lower reamer as plain and hemicycle form, and its main structural parameters are defined as well. Then it is validated further that such improved vibra cutter reamer can be used to process curve-edged parts of titanium alloy sheet. The experimental result shows that the titanium alloy sheet parts processed by above equipment have no sharpen angles for convex parts and evident crevasse of concave-edged part. In summary, such improvement can eliminate the free-waved edge and improve the manufacture quality of titanium alloy sheet parts greatly.     

Experimental Study on the Small Flyer Initiating Behavior of Fine-grained Explosives

The initiating behavior of fine-grained explosives by small flyer is studied. The diameter of small flyer in this device is 1 ram. The test results indicate that the granularity of explosives has great effect on its flyer initiating sensitivity.The flyer initiating sensitivity of the fine-grained explosives is higher and the critical initiating energy is lower than that of common explosives. For common explosive, the flyer initiating sensitivity increases as the density is reduced. But for the fine-grained explosive, the test results are exactly opposite.     

Algorithm for Multi-laser-target Tracking Based on Clustering Fusion

Multi-laser-target tracking is an important subject in the field of signal processing of laser warners. A clustering method is applied to the measurement of laser warner, and the space-time fusion for measurements in the same cluster is accomplished. Real-time tracking of multi-laser-target and real-time picking of multi-laser-signal are introduced using data fusion of the measurements. A prototype device of the algorithm is built up. The results of experiments show that the algorithm is very effective.     

Influence of Installing Error on the Surface Shape Precision of the Axial Symmetry Aspheric Workpiece in Lapping

A method to calculate the surface shape error, which is caused by the installing error between the workpiece and the lapping tool in the process of form lapping, is proposed. The mathematical model which the installing translation error influences on the workpiece surface shape error is established. The changing rule of the error is simulated through the calculating example of the paraboloid workpiece. The results indicate that the surface shape error of the workpiece is increasing with the increase of the installing translation error, it is also increasing gradually along the center point of the curve surface to the edge, and the influence is severer to the curve surface with great curvature than that of the small curvature when the translation error is the same.     

Experimental Research on Output Performances of Giant Magnetostrictive Actuator

The paper introduces the performances of magnetostrictive actuators and its applications, discusses the design methods for the structure and internal magnetic circuit of a giant magnetostrictive actuator, and makes tests on the output displacement and force characteristics for an actuator using homemade magnetostrictive material. The experimental result shows that the actuator has satisfactory output precisions and ranges in transient and stable states, and can be used in lowfrequency vibration control system of precise equipment.     

Robust Graded Sliding Mode Tracking Control for Low Speed Spinning Ballistic Missiles

The nonlinear dynamic model of spinning ballistic missiles is established during the first boosting phase of the missile. Based on the conventional backstepping sliding mode control and the assumption of a two time-scale separation of missile dynamics, a graded sliding mode controller is designed with two sub-sliding surfaces which have invariability to external disturbances and parameter perturbations, and a matrix which comprises three first order low pass filters is introduced to prevent ＂explosion of terms＂. Owing to the upper bounds of the uncertainties are difficult to obtain in advance, adaptive laws are introduced to estimate the values of the uncertainties in real-time. Eventually, the numerical simulation results given to show the proposed controller can ensure the steady flight of missiles.