浅析广域网加速设备对传输效率的优化

随着业务的发展和信息化建设步伐的加快,各级数据中心分支机构日益增多,网络内跨省、跨市之间需要进行大量的数据传输。这种“一对多”的数据服务,给各中心服务器和带宽带来了巨大的压力,严重影响了广域网数据传输和网上浏览的速度。深信服广域网加速设备提供的对广域网络传输和应用交互问题的一整套优化技术,具有良好的应用效果。     

正确处理新形势下人民内部矛盾

正确处理新形势下人民内部矛盾,是实现"十二五"时期发展目标的社会保证."十一五"时期,我们党积极推进社会主义和谐社会建设,妥善处理人民内部的各种矛盾."十二五"时期要最大限度增加和谐因素,在推进科学发展、加快转变经济发展方式的进程中缓解和化解社会矛盾,加强和改进新形势下群众工作.     

热气溶胶灭火装置安全隐患探讨

针对目前市场上热气溶胶灭火装置＂爆炸＂及存在安全隐患,阐述了其发生原理,并提出了热气溶胶灭火装置应严格控制的一些安全性能指标和结构方式。     

磁流变阻尼器响应时间仿真与试验研究

响应时间是磁流变阻尼器（Magnetorheological Damper,MRD）重要性能指标之一。为分析MRD响应时间及影响因素,建立了MRD动态响应模型,提出了一种基于Ansoft和Adams联合仿真分析MRD响应时间的方法,并通过仿真与试验相结合的方法分析了阶跃电流幅值、活塞运动速度以及系统刚度等因素对MRD响应时间的影响。仿真结果和试验数据表明：MRD响应时间随活塞速度和系统刚度的增大呈减小趋势,随阶跃电流幅值的升高呈增大趋势。同时证明通过联合仿真分析MRD响应时间和影响因素的方法是有效的。     

DP接口多屏显示在火控系统中的应用

将DP多屏显示技术应用到嵌入式载体,介绍了DP接口原理、相关火控系统硬件、软件的设计,DP接口传输设计,实现了界面显示资源与显示处理资源分离的模式;解决了多屏显示传输不可靠的问题,保证火控系统"一拖三"的多屏显示功能正常.     

基于红蓝对抗的实战化教学组训方法研究 —— 以航空兵初级指挥专业为例

红蓝对抗训练是实战化训练的最高形式,近年来在部队演习演练中被广泛采用,效果显著。军队院校教学向部队靠拢,向实战聚焦,可在航空兵初级指挥专业的人才培养中引入红蓝属性,开展实战化教学的探索和实践。本文提出“模拟环境+师生对抗+硬度可调”的实战化教学组训方法：一是红蓝对抗模拟训练环境,可支撑航空兵初级指挥专业学员开展“规划-部署-实施-评估”的航空兵作战全流程红蓝对抗实战化教学;二是“蓝”教员和“红”学员师生对抗教学组织实施程序;三是适应学员能力渐进式增长的关于训练想定、蓝军能力、导调方式和评定标准的“硬度可调”机制。此外,为确保红蓝对抗实战化教学的顺利实施,给出了锻造“红蓝兼备”院校“蓝”教员队伍的几点建议。     

交通场景行人穿越检测方法进展研究

随着自动驾驶和计算机视觉技术的飞速发展,人们对交通安全的重视程度越来越高。其中,交通场景中行人穿越检测问题是研究的热点与难点之一。对行人穿越检测这一领域进行了综合评述,并对未来研究进行了展望。按照行人试图穿越、正在穿越及穿越预测三个阶段进行分析,首先分析了基于行人姿态穿越意图的研究进展(试图穿越),包括人体姿态、数据驱动和高斯动力学模型三个方面;其次讨论了基于轨迹跟踪的穿越行为检测方法(正在穿越);然后概括了基于轨迹预测的行人穿越检测方法(穿越预测);最后总结了现阶段比较新颖的多传感融合、车路协同、车联网等研究角度,并对未来该领域需重点发展的方向提出建议。     

Delamination process in cross-ply UHMWPE laminates under ballistic penetration

Cross-ply unidirectional laminates made of ultra-high molecular weight polyethylene fibers are widely used as components of bullet-proof vests. To simulate the delamination process of the material under penetration, we constructed a numerical mechanical model, which was validated by tests using 7.62 × 39 mm rifle bullets penetrating laminates of different thicknesses. The results show that the delamination region is essentially diamond-shaped. The simulated delamination region is in good agreement with the experimental data. It is found that the delamination region increases with the compression modulus along the fiber direction. The delamination region increases when the shear strength between the fabric layers decreases;However, it is little influenced by the normal strength. The delamination region of the front face of the laminate is little influenced by the failure strain of the material and the initial velocity of the bullet. The delamination region of the back face increases with the failure strain and decreases with the initial velocity.     

Repeater jamming suppression method for pulse Doppler fuze based on identity recognition and chaotic encryption

Pulse Doppler (PD) fuze is widely used in current battlefield. However, with the threat of repeater jamming, especially digital radio frequency memory technology, the deficiency in the anti-repeater jamming of a traditional PD fuze increasingly emerges. Therefore, a repeater jamming suppression method for a PD fuze based on identity (ID) recognition and chaotic encryption is proposed. Every fuze has its own ID which is encrypted with different chaotic binary sequences in every pulse period of the transmitted signal. The thumbtack-shaped ambiguity function shows a good resolution and distance cut-off characteristic. The ability of anti-repeater jamming is emphatically analyzed, and the results at different signal-to-noise ratio (SNR) show a strong anti-repeater jamming ability and range resolution that the proposed method possesses. Furthermore, the anti-repeater jamming ability is influenced by processing gain, bit error rate (BER) and correlation function. The simulation result validates the theo-retical analysis, it shows the proposed method can significantly improve the anti-repeater jamming ability of a PD fuze.