聚合物-金属界面相形貌的研究

环氧树脂在 Al 合金表面生成纤维状的界面相结构,其形成、发展和特征与树脂的体系、交联反应条件以及 Al 合金的表面状态有关。环氧树脂的基础相为颗粒状的超结构组织。聚合物界面相的力学破坏表现为纤维体的拉伸、变形和断裂,而基础相在纯剪切受力时出现在45°方向的裂纹,并发展导致连接层的破坏。     

Control of locomotion in the marine mollusc Clione limacina. XI. Effects of serotonin

The locomotor activity in the marine mollusc Clione limacina has been found to be strongly excited by serotonergic mechanisms. In the present study putative serotonergic cerebropedal neurons were recorded simultaneously with pedal locomotor motoneurons and interneurons. Stimulation of serotonergic neurons produced acceleration of the locomotor rhythm and strengthening of motoneuron discharges. These effects were accompanied by depolarization of motoneurons, while depolarization of the generator interneurons was considerably lower (if it occurred at all). Effects of serotonin application on isolated locomotor and non-locomotor pedal neurons were studied. Serotonin (5 x 10(-7) to 1 x 10(-6) M) affected most pedal neurons. All locomotor neurons were excited by serotonin. This suggests that serotonergic command neurons exert direct influence on locomotor neurons. Effects of serotonin on nonlocomotor neurons were diverse, most neurons being inhibited by serotonin. Some effects of serotonin on locomotor neurons could not be reproduced by neuron depolarization. This suggests that, along with depolarization, serotonin modulates voltage-sensitive membrane properties of the neurons. As a result, serotonin promotes the endogenous rhythmical activity in neurons of the C. limacina locomotor central pattern generator.     

基于小波分析的光纤陀螺信号处理

文章对光纤陀螺仪的实测信号进行了分析。为了抑制光纤陀螺随机噪声,利用五点三次平滑、数字滤波、小波变换分析法对光纤陀螺静态输出数据进行了滤波处理,通过对比滤波前后陀螺的输出曲线、标准差以及频谱图,可以发现:小波阈值滤波和五点三次平滑相结合的方法能够有效的补偿光纤陀螺的随机误差。     

Achieving fair service with a hybrid scheduling scheme for CICQ switches

Providing performance guarantees for arriving traffic flows has become an important measure for today’s routing and switching systems. However, none of current scheduling algorithms built on CICQ (combined input and cross-point buffered) switches can provide flow level performance guarantees. Aiming at meeting this requirement, the feasibility of implementing flow level scheduling is discussed thoroughly. Then, based on the discussion, it comes up with a hybrid and stratified fair scheduling (HSFS) scheme, which is hierarchical and hybrid, for CICQ switches. With HSFS, each input port and output port can schedule variable length packets independently with a complexity of O(1). Theoretical analysis show that HSFS can provide delay bound, service rate and fair performance guarantees without speedup. Finally, we implement HSFS in SPES (switch performance evaluation system) to verify the analytical results.     

点对点模拟指挥演练平台的设计与实现

为了提高指挥官在警情发生时所做的决策部署的及时性和准确性,设计并研发点对点模拟指挥演练平台。从操作性、稳定性、真实性3个方面对该平台进行详细的设计,并在研发过程当中,对技术难点相应的解决方案进行分析对比,从中选择出最优方案来满足该平台的真实性。通过在警务技能训练系统中的集成应用,显示了模拟演练平台所发挥的作用,提高了参训人员的基本技能、战术素养和行动能力。     

基于工作流和智能手机的城市综合管理平台

为适应现代城市综合管理的需要,提高城市管理水平,提出利用GIS技术的二三维一体化联动提高管理平台可视化;基于工作流的管理使事件处理更加自动化;利用智能手机的方便使管理人员与系统进行动态交互;利用模糊数学提高任务完成质量评价的科学性。整个平台在Windows7下进行开发,基于B/S(浏览器/服务器)和C/S(客户端/服务器)结合的架构,运用JavaEE、工作流、模糊数学、无线通信、视频融合等技术,实现平台对交通灯、人员、车辆、消防、事件和任务的管理。     

一种应用于复杂组合软件的可靠性测试模型

当前复杂的组合型软件可靠性测试一直是一个难点,主要原因是无法多多种差异性较大的软件特征建立可约束的检测分析模型,一旦软件数量过多,模型会迅速陷入不收敛。为了解决这一问题,提出一种复杂组合差异性软件的可靠性分析模型。对组合软件以一种分解的思想对其进行建模。对分解后的软件特征进行重新分区建模。形成多个可测试的子服务特征。运用一种稳定概率统计的观点,对模型进行分析,分析不同区域组合后的稳定概率,进而代表组合后的可靠性结果。仿真实验结果表明,该种模型能改对较多软件组成的、差异性较大的大型软件可靠性进行更为合理的分析,模型鲁棒性较好,能较好完成可靠性分析的工作。     

基于UC/GUI的嵌入式GUI在S3C 2410上的移植

嵌入式图形用户界面为嵌入式系统提供了人机交互界面,大大方便了嵌入式系统的人机交互,进而加速了嵌入式系统的流行。选择了基于UC/GUI的嵌入式GUI作为移植对象,并详细介绍了将其移植至S3C2410开发平台上的技术。该移植技术对于其他的嵌入式开发板也具有一定的参考价值。     

一种新的BOC(n,n)型信号的精确捕获算法

针对BOC(n,n)型信号自相关函数存在三个峰值导致伪码捕获模糊性的问题,提出了一种新的基于相关函数的精确无模糊的捕获算法。该算法将信号进行频域的多普勒补偿,通过本地增设QBOC(n,n)支路,利用BOC(n,n)信号自相关以及BOC(n,n)和QBOC(n,n)互相关,经移位±TC/4、取模、求和、平方运算而实现。理论与仿真分析表明,该算法在不改变自相关主峰宽度的情况下完全消除相关副峰的同时,显著提高了主峰峰值;比传统捕获算法的性能好4.5 dB左右,并且捕获精度良好、易于实现。