冶钢小方坯连铸机结晶器液面控制系统故障分析及对策

本文针对某一钢铁厂的一套小方坯连铸机结晶器液面自动控制系统，对其故障原因进行了深入分析，指出导致系统控制性能达不到设计要求长期无法投入运行的主要原因，并提出了相应的解决方法。     

Linear self-stabilizing algorithms for the independent and dominating set problems using an unfair distributed scheduler

This paper presents distributed self-stabilizing algorithms for the maximal independent and the minimal dominating set problems. Using an unfair distributed scheduler the algorithms stabilizes in at most max{3n−5,2n} resp. 9n moves. All previously known algorithms required O(n²) moves.     

Locational analysis for regionalization of Turkish Red Crescent blood services

After a series of earthquakes in 1999, Turkish Red Crescent (TRC) has engaged in a restructuring for all of its activities, including the blood services. Our study on the blood management system had been started as part of this initiative to restructure the blood services and improve both their effectiveness and efficiency. In the current system of TRC, not much consideration has been given to how the locational decisions affect the performance of blood centers, stations and mobile units. In recent years, however, there has been much discussion regarding the regionalization of the blood management system in Turkey. In this study, we develop several mathematical models to solve the location–allocation decision problems in regionalization of blood services. We report our computational results, obtained by using real data, for TRC blood services.     

The column protocol: A high availability and low message cost solution for managing replicated data

This paper presents a quorum-based replica control protocol which is resilient to network partitioning. In the best case, the protocol generates quorums of a constant size. When some replicas are inaccessible, the quorum size increases gradually and may be as large as O(n), where n is the number of replicas. However, the expected quorum size is shown to remain constant as n grows. This is a desirable property since the message cost for accessing replicated data is directly proportional to the quorum size. Moreover, the availability of the protocol is shown to be comparably high. With the two properties—constant expected quorum size and comparably high availability—the protocol is thus practical for managing replicated data.     

基于音频数字水印的空间定位技术研究

深入研究了利于音频数字水印实现空间定位的技术思想,提出了一种在数字音频中嵌入水印信息后,实现对声源的空间定位算法,详细阐述了该算法的设计思想,并分别给出了音频数字水印的嵌入过程和数字水印的提取过程。     

基于物联网技术的监狱人员定位可视化管理系统

提出了一种监狱人员定位可视化管理系统的设计和实现方法。该系统基于WLAN的RTLS定位技术,实现对服刑人员、干警、访客等人群的可视化定位管理。文章结合监狱的应用需求,首先给出了系统的总体设计原则;同时在总体原则约束下,对系统功能、总体实现方案、实现框图、应用流程、网络安全等部分进行阐述,给出了标签软硬件设计、定位管理系统的平台选型和软件架构;最后对设计的系统进行了测试。测试结果显示,该可视化定位管理系统的定位精度达到了预期效果。在进一步优化和完善后,即可大规模推广使用。     

大棚温湿度无线实时监控系统的设计

提出了一种基于ZigBee技术的大棚温湿度无线实时监控系统的设计方法。该方法以SOC芯片CC2530和内核为Cortex-M3的STM32F107及温湿度传感器为硬件平台,可实现对大棚内气体和土壤温湿度的实时采集及空间定位功能,同时可将采集到的数据通过ZigBee网络传输到监控中心。     

舰载雷达探测误差传递与灵敏度分析

在舰艇及编队指控系统中,来自不同平台的传感器探测系统偏差失配是影响态势一致性的关键因素。本文采用理论建模和数字仿真相结合的方法,对舰载雷达探测和处理涉及各环节的偏差进行分析,建立了雷达测量、坐标转换、平台定姿定位和基线转换等各环节偏差影响模型和舰载雷达探测的等效偏差模型。理论分析和计算机仿真结果表明,雷达方位测量、平台艏向和甲板艏向形变引起的偏差均可以直接迭加到方位上,合并为方位偏差;同时,在目标俯仰角小于10°的情况下,基本上可以忽略甲板形变、平台姿态偏差对目标方位测量的影响。     

医院局域网丢包实例解析

医院局域网的日常运维管理,经常会遇到的一种故障现象就是丢包,当网络出现传输延迟、无法连接服务器数据库等异常现象以后,如何能快速找到故障原因并排除故障．这是对网络管理人员的一大挑战,网管人员应当具备处理这种网络丢包故障的能力。列举工作中遇到的几种丢包案例,总结出故障解决的经验与心得,希望能够提高大家的分析能力和解决此类网络故障的能力。     

惯性导航装置虚拟检测仪设计

惯性导航装置是一种很重要且精密的设备,故障检测和诊断是设备维修的前提,综合采用现在的虚拟检测技术,对惯性导航装置的故障检测方法进行了研究,设计了虚拟检测仪的硬件设备,开发了虚拟检测仪的软件,完成了整个虚拟检测仪的设计。