机械摊铺细粒二灰稳定碎石质量控制

本文从外环线一期工程二灰稳定碎石（以下简称三渣）配比、选料、混合料控制、机械化摊铺、碾压、松铺系数、厚度、含水量控制及产生离析现象的处理等多方面进行了阐述,从而使三渣基层施工达到了最佳控制途径,道路平整度检测均方差为0．6。     

室内测定构造深度的数据处理方法

构造深度是评价路面抗滑性能的重要指标,介绍了用激光测距仪测定构造深度的测量原理、测量方法和数据采集方法.得出了激光测距仪测定构造深度的数据处理方法,可以供相关工程人员参考.     

新型IP网络语音终端设备的设计

提出一种面向局域网／企业网的IP网络语音终端设备设计方案。采用低功耗定点数字信号处理器和通用微控制器，分别完成话音编解码和Internet接入与访问，提供多种高速和低速通信接口。该设备可以作为网络终端，还可与其他终端直接互联。     

一种抗差型航迹关联算法研究

航迹关联是多源信息融合中的关键问题.通过选择目标数据相似度计算模型和参数,计算不同信源航迹与航迹间的关联相似度,并以之构成目标关联矩阵.引入伪行列式的概念,对目标关联矩阵进行变换,形成目标联合分配矩阵.在分配限定条件下,通过最大化目标联合分配似然度,可得到航迹与航迹间的关联匹配对,实现航迹关联.仿真实验表明,在信源具有较大的系统误差情况下,该算法能够保持较高的关联正确率,表现出了良好的抗差特性.     

British Rail Reform and Sustainable Development——An interview with Tom Harris,Minister for Railways Department for Transport

<正>The UK is the birthplace of rail transport. After nearly two centuries of development, British rail transport has experienced a process of prosperity, decline, and recov- ery as well as repeated reform, is there anything we can learn from?     

蓝牙技术在军用通信设备中的应用探讨

蓝牙是一种新兴的近距离无线通信技术,以其独特的优点广泛地应用于民用产品.重点就其在军用通信设备中的应用展开讨论,并给出了嵌入蓝牙技术军用通信设备的方案设想.     

城市轨道交通综合监控系统中事故反演功能的设计与实现

事故反演功能在城市轨道交通的综合监控系统中具有重要作用.以往的城市轨道交通综合监控系统往往不具备反演功能或者只能现场录制当前时刻开始的较短时间段的反演文件,因而缺乏灵活性和有效性.着重讨论了基于RT21-ISCS综合监控软件平台从实时历史数据库中获得事故反演数据源的方法,能够对城市轨道交通综合监控系统运行以来任意时段的场景进行反演分析.     

小型水库除险加固之防渗方式探讨

结合南京市多座小型水库除险加固防渗处理的工程实践经验,总结出小型水库一般防渗方法,且针对不同渗漏原因,给出建议性防渗措施,有关经验可供相关专业人员参考。     

Establishment of a uremic apolipoprotein E knockout mouse model to explore the mechanism of uremic atherosclerosis

Objective To establish a uremic apoE-/- mouse model to observe serum biochemical parameters and features of aortic root atherosclerosis (AS) in the model. Methods A uremic model was induced surgically in apoE-/- mice: electrocautery of the right kidney at 8 weeks of age and nephrectomy (NX) of the left one 2 weeks later. Control mice were sham-operated. Two weeks after NX, renal functions were detected in the uremic and control mice to evaluate the efficiency of the model. After 10 weeks of NX, blood samples were taken to determine serum biochemical parameters, and aortic root was collected for frozen sections to investigate the lesion features of AS. Results Two weeks after NX, renal functions declined significantly in the uremic mice compared with the control ones, and remained stable 8 weeks later either in males or in females. Ten weeks after NX, serum levels of TCH, TG and LDL-C were dramatically higher in the uremic mice than in the controls, whereas no differences in serum HDL-C or glucose concentration were found between the two groups. Aortic root plaque relative area increased significantly in the uremic mice compared with the controls either in males or in females; more-over, the lesion area was larger in female mice than in male ones. Conclusion We established a uremic apoE-/- mouse model successfully, and this model is characterized by accelerated atherogenesis which is associated with an increase in serum lipid profile. This experimental model can be a useful tool to study the pathogenesis and therapeutic strategies of uremic AS.     

城市轨道交通电动列车司机值乘方案的优化

以上海轨道交通3号线为例,对电动列车司机值乘的包乘制、轮乘制按实际效果和使用成本进行了优缺点分析;并在此基础上对司机作息安排、人员配置、运作管理情况综合进行优化,以期达到网络运营后节约人力成本的作用.