以用户为中心的开放网格服务体系结构

作为对OGSA的补充,UC-OGSA将网格用户放在主导地位,并以服务为中心构建更大的虚拟计算资源.网格服务提供者可设计并发布自己的网格,提供数据和存贮资源,或成为业务流程的一部分.通过定制计算,用户可将特定的计算程序上传到网格中的某资源.由网格中的服务器自动对其封装与发布,并调度至合适的计算资源运行.用户可像使用普通的网格服务一样使用定制的计算服务.     

基于本体的课程知识管理系统设计

基于本体的课程知识管理系统模型,采用用户层、表示层、本体层和存储层4层结构.用户请求经表示层转化为Java程序代码后发给本体层,本体层根据用户请求从本体知识库中搜索所需知识并返还给用户,存储层负责知识的存储,整个系统的维护由知识工作者完成.系统通过课程知识点间的关系确定系统本体结构,使用JENA设计知识查询程序,能实现基于语义的课程知识检索.     

导弹发射车便携式战场抢修辅助系统设计

便携式战场抢修辅助系统通过分析装备威胁机理、战损模式及影响,提供装备损伤评估、诊断推断、应急修复等.将发射车原理、组成和故障现象、评估、排除等信息组成知识库和数据库.用户根据维护评估逻辑图搜索查询发射车各分系统故障,显示维修方法.     

水下导航信息融合专家系统的知识库设计

水下导航信息融合专家系统知识库的核心是知识库与推理机,包括书本及导航专家经验.导航知识通过知识获取机构存入知识库,由知识管理工具维护.通过抽取水下导航中各传感器获得的信息特征,并标准化后得到数据库数据.在模型方法库中存储数据计算的方法.在控制系统的管理协调下,推理机运用知识库中的知识,综合数据库的数据和条件,调用模型方法库中的模型和方法进行推理,获得适用的导航信息.     

用户行为反馈的网格资源检索方法研究

面向服务的网格环境下,资源种类多样,表示方式混杂,传统的网格资源检索方法不再适用于越来越复杂的网格环境,如何在复杂网格环境下建立一种合理有效的资源检索方法是目前网格发展的重点。提出了一种基于用户行为反馈的网格资源检索方法,这种方法建立在网格用户行为的基础上,利用用户行为的历史记录结合自适应的相关反馈方法对网格资源进行分析,通过资源的访问路径、访问频度、访问时间和检索结果等建立网格资源间的关联模型。该方法在某种程度上使网格资源检索结果与用户的主观感知更加接近,减轻了异构网格环境产生的语义混杂、模糊问题,并通过实验证明有较高的检索精确度。     

企业信息门户单点登录和信息集成

针对企业用户登录不同应用系统时操作处理不便的问题,介绍了一种基于统一认证、单点登录和信息集成的企业信息门户的设计方法。经过企业信息门户的统一用户认证和SSO登录后,通过基于用户映射的认证方式,在不同登录方式的应用系统中实现了单点登录。并利用Ajax技术、Web动态语言技术实现了跨域和非跨域的信息集成。在北方光电公司的系统中应用结果表明：该方案能实现多系统的单点登录和跨域信息集成与整合,大大提高操作的方便性。     

一种面向UUT的自动测试信息模型

根据大型复杂装备测试面,临的被测设备数量多,被测信号类型、测试需求多样的问题,建立面向UUT的自动测试信息模型,包括测试资源信息模型、测试项目信息模型和测试数据信息模型,将测试流程所需的UUT信息模型化,并在UUT、TPS、测试信息模型间建立一一对应关系,由此提高软件的模块化水平和可移植,并降低测试软件开发和维护的难度和成本。     

一种智能化的信息采集系统的研究与实现

信息采集系统一般需要用户手动设置采集规则,对采集结果不进行处理并返回大量信息.为了简化用户的操作并直接得到所需结果,提出了一种智能化信息采集系统.面向专家信息的采集,基于搜索引擎,根据专家的姓名、工作单位和领域     

GIG对加强我军信息网格建设的启示

借鉴美军GIG建设先进经验,加强我军信息网格建设应做好以下工作:搞好顶层设计,确保信息网格建设标准统一;着眼作战需求,确保信息网格建设目标明确;加强统筹规划,确保信息网格建设行而有序;重视试验论证,确保信息网格体系效能;实施"民技军用",确保信息网格建设资源充沛;注重"人才效应",确保信息网格建设动力十足.     

通用Web多级汇总型报表工具的设计

基于B/S的Web多级汇总报表工具,由基础及汇总模板、报表模板设计器组成,并根据下发的基层部门和时间生成所需报表.基于Web应用程序,用户通过浏览器,直接或通过语义层使用数据源,完成各种报表的设计,生成报表模板及数据自动汇总.该模板设计器主要负责界面的设计和与用户的交互,实现动态数据绑定,并把模板的信息保存.     

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.     

Method for Measuring Velocity of Warhead Fragments Based on Photoelectric Detection

For measuring velocity and impacting position of single fragment of warhead, a non-contact measuring method is proposed, in which a six-light-screen array, a position indicator, a multi-channel chronograph and a computer are used.The principle of measurement is described. The key device of the system is a light screen array sensor which consists of six light screens allocated with certain geometrical parameters. When the fragment flies through the light screen array, the time of passing through each of the screens is recorded by the multi-channel chronograph. According to the time data and the geometrical parameters of the array, the velocity vector and the location of the fragment can be calculated immediately. The presented method can be used to locate the fragment and to measure the real velocity on its flying direction. It can also be used to measure the velocity of a fragment swarm after the system is engineered further.     

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.     

数码电子雷管中影响点火头性能因素分析

阐述了数码电子雷管中,点火药剂细结晶三硝基间苯二酚铅（LTNR）的制备工艺;从点火药剂的种类、加入黏合剂的质量分数、桥丝直径、点火头的电阻值、防潮漆的蘸涂等方面对点火头性能的影响因素进行了探讨;通过震动试验、并联起爆试验、延期精度检测与考核,试验结果表明：一次性合成的细结晶LTNR是制造数码电子雷管点火头较为理想的点火药剂,按技术要求生产的点火头性能指标能够满足行业标准要求。     

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.     

Design and Implementation of One Missile Visual Simulation System Based on OpenGL

The implementation of a missile＇s visual simulation system is explained that is developed with OpenGL（open graphic library） and the flight path and flight carriage in different stages of the missile are displayed. The establishment problems of the 3D scene are circumstantiated including the construction and redeployment of the model, creation of the virtual scene, setting of the multi-viewports and multi-windows etc. The missile＇s data driver, system flow, the modules and their mutual relations of the missile visual simulation system are discussed. The missile flight simulation results and effect of the scenes are given.     

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.     

Dynamic Encryption Technology in Ad-hoc Networks

A new dynamic encryption application in ad-hoc networks is proposed. The advantages of this method are its being able to use the previous ciphertext as a seed of a new encryption process, rendering the encryption process effective in all communication process by continuous dynamic key generation together with synchronization, and its capability to cut back on system bandages to a greater extent, which is valuable for the ad-hoc circumstance. In addition, the rationality and effectiveness of this novel encryption method have been verified by the test results.     

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.