列车虚拟编组技术的研究现状及发展

基于车车无线通信的列车虚拟编组技术能够根据轨道交通客流的时空变化灵活精准地匹配运力,改善运输服务质量,提升运力使用效能。首先介绍虚拟编组技术的发展历程,其次阐述列车虚拟编组关键技术以及基于虚拟编组技术的灵活运力调整策略,然后整理分析国内外虚拟编组技术在运行控制、通信、运输组织3个方面的研究成果,最后指出从系统的角度研究虚拟编组相关技术的必要性。

不同集成模式下区域控制器功能实现分析

介绍了联锁兼容型和联锁升级型2种CBTC系统集成模式,分析和对比2种集成模式下区域控制器主要功能的实现,根据CBTC系统将向互联互通发展的趋势,得出联锁升级型模式下区域控制器功能的实现方式更适应CBTC系统发展方向的结论,以期为ZC研究、开发和升级提供参考。

PDCA在城轨CBTC项目进度管理中的探索与实践

城轨CTBC信号系统工程项目进度管理是一项多要素综合的系统性事务,引入质量管理的PDCA循环方法,使城轨CBTC信号系统工程项目进度管理按照PDCA循环管理的方法方式进行探索和实践,以研究PDCA循环方法在城轨CBTC信号系统工程项目进度管理中的应用,提出相应建议,并引出进一步思考。

The Effects Community Tuberculosis Care Makes in the Early Identification and Referral of Tuberculosis Patients from Active Case Findings in Botswana

Setting: Twenty-two public health clinics offering Tuberculosis (TB) care at Francistown and Gaborone cities in Botswana. Objectives: To assess the effects of community tuberculosis care (CTBC) on the early identification and referral of patients and to identify perceived factors that contribute to effective active case findings and community referral system. Design: We adopted a concurrent triangulation mixed-method research design. Convenient purposive sampling was followed for both qualitative and quantitative phases. Data were collected from participants who met the inclusion criteria in both phases from July 2016-Dec. 2018. Consent was obtained from the all eligible participants. Results: We interviewed 40 caregivers with mean age of 43.4 years. We identified different themes, 83% (n = 33) accepted the caregiving role, 50% (n = 20) reported Social and physiological support from health workers, 23% (n = 10) received health education on TB, 20% (n = 8) and 30% (n = 12) reported teamwork and communication respectively between the health workers and caregivers as factors that contribute to effective active case findings in CTBC. 670 patients were enrolled in the quantitative phase and only 55% (n = 369) had their contact details documented in the patient’s TB records, while 94% (1311/1398) active case finding suspects/contacts screened for TB. Only 18% (115/1398) had been referred for investigated and 3% (35/1398) were TB positive. All patients underwent treatment. Conclusion: The caregiving role has been accepted in CTBC. Moreover, effects of CTBC on the early identification and referral of TB patients are commendable and can be improved.

华为新闻

为CTBC商用新一代移动通信网络提供全套解决方案，联通MSTP选型 华为保持领军地位，NE80E核心路由器助力中国电信CN2骨干网络建设，承建荷兰全国WCDMA网络。

城市轨道交通CBTC系统浅析

随着城市轨道交通的迅速发展,成为居民出行的重要工具.城市轨道交通系统能够安全快捷的输送乘客,他的这种能力与信号系统关系密切,城市轨道交通信号系统主要的基础是速度控制,本文主要探究的是在城市轨道交通中基于通信的列车运行控制系统（CTBC）,在这个系统上进行城市轨道交通信号施工的要点以及防护的具体措施.

多层螺旋CT对布-加氏综合征的诊断价值

目的：探讨螺旋CT对布加氏综合征的诊断价值；方法：搜索经临床及其影像检查证实的布加氏综合征4例，回顾性分析其CT表现。结果：CT动态增强扫描及后处理重建显示肝水平上段下腔静脉狭窄3例；肝水平下腔静脉显示不清1例；肝下段下腔静脉扩张3例；脾大，脾静脉迂曲、扩张3例；奇静脉及半奇静脉扩张4例；食管胃底静脉曲张1例。均显示局部肝静脉和下腔静脉狭窄及范围。结论：多层螺旋CT可明确血管阻塞部位，程度，范围及侧支循环，对诊断具有重要参考价值并指导临床治疗。