NFV中单节点启发式资源分配方法

从网络包转发性能角度出发,通过实验深入分析DPDK对虚拟网络功能的加速效果及CPU资源消耗情况,并对单节点资源分配问题进行研究,证明了该问题是NP难类型,提出了基于贪心算法的启发式VNF资源分配算法。在此基础上,针对网络负载的潮汐现象,提出了一种基于网络负载的虚拟网络功能实例自动切换方案。实验结果显示,相较传统方式,该方案在高负载情况下VNF性能提升了20%。

Model Investigation on Composite Failure Prediction of π-Joint Structures

This paper was concerned with the tensile mechanics behavior of the composite π-joint under static tensile loading. The numerical strength analysis methodology was presented containing the basis assumption for the analysis, the material modeling, and the selected element type. It was assumed that the composite ply had transverse isotropic material properties and the adhesive had linear elastic properties. With the goal of the strength analysis to determine the onset of the damage initiation and the ultimate failure load, two stiffness degradation models were discussed and a modified maximum stress failure criteria was presented. To verify the numerical model, a pull-off test scheme was performed and the experimental data of five specimens were given. The experimental results indicate that the damage initiation location and the failure load were consistent with numerical predictions and verified the feasibility of the numerical model.

有机胺吸收SO_(2)系统优化研究与实践

介绍了有色金属冶炼企业的有机胺烟气脱硫工艺流程,针对有机胺预处理系统在运行中出现的洗涤液温度高、有机胺液吸收效果差等问题,通过提高蒸发降温能力、控制动力波洗涤器入口烟气温度、降低烟气水含量、降低洗涤循环液温度等方式降低吸收塔烟气温度,通过稳定有机胺浓度和烟气浓度、提高有机胺液解吸能力等措施提高有机胺液吸收能力,实现了液硫产能和综合效益的提升。

军用电子元器件质量等级的统计分析研究

军用电子元器件作为电子装备、信息系统的基本单元,直接影响到武器装备性能发挥和功能实现,而质量等级是电子元器件设计选择、采购验收、筛选检验的重要依据,是影响质量和可靠性重要的因素之一。通过梳理分析30余万种军用电子元器件,以生产厂商和数据分类为切入点,梳理了31种类别电子元器件的质量等级和预计等级,总结电子元器件使用现状和质量等级分布规律。在此基础上,深入调研武器装备使用电子元器件的选用原则及选用现状,并提出质量等级的改进建议,为武器装备军用电子元器件的设计研发以及选用验证提供数据依据。