An intelligent service matching method for mechanical equipment condition monitoring using the fibre Bragg grating sensor network

Due to the advantages of being able to function under harsh environmental conditions and serving as a distributed condition information source in a networked monitoring system, the fibre Bragg grating (FBG) sensor network has attracted considerable attention for equipment online condition monitoring. To provide an overall conditional view of the mechanical equipment operation, a networked service-oriented condition monitoring framework based on FBG sensing is proposed, together with an intelligent matching method for supporting monitoring service management. In the novel framework, three classes of progressive service matching approaches, including service-chain knowledge database service matching, multi-objective constrained service matching and workflow-driven human-interactive service matching, are developed and integrated with an enhanced particle swarm optimisation (PSO) algorithm as well as a workflow-driven mechanism. Moreover, the manufacturing domain ontology, FBG sensor network structure and monitoring object are considered to facilitate the automatic matching of condition monitoring services to overcome the limitations of traditional service processing methods. The experimental results demonstrate that FBG monitoring services can be selected intelligently, and the developed condition monitoring system can be re-built rapidly as new equipment joins the framework. The effectiveness of the service matching method is also verified by implementing a prototype system together with its performance analysis.     

十三陵抽水蓄能电站地下厂房结构振动监测

根据十三陵蓄能电厂1号机组段结构振动实测资料，分析不同工况、部位、方向的振动特性，研究振动原因以及振动对结构稳定的影响，总结一般性规律，确保机组安全运行。     

我国社会中介组织监管模式的反思与重构

随着我国市场经济体制的逐步建立以及社会结构的日趋分化,促进社会中介组织快速发展、建立完善的社会中介组织监管体系是和谐社会建设中的重大课题。然而我国现行的社会中介监管体制及手段由于受多种因素的制约,已明显落后于发展的需要,面临监管存在盲区、监管效率不高、力度不够等困境。为更好地提高监管能力,需要从监管理念、监管体制、监管模式等方面进行创新。     

水工建筑物进水口三维漩涡流场的实验研究

本文利用激光多普勒测速仪对进水口三维漩涡流场进行了量测,给出了切向速度V_0、径向速度V_1、轴向速度V_2及其紊动特性的分布特征。并比较了相同淹没水深、相同进口半径水力条件下与无涡流场的差别。可供科研设计人员参考。     

挣值法在天立广场项目进度控制研究

针对施工单位在天立广场项目进度管理方面存在的问题进行偏差分析,指出了挣值法在具体工程案例中的应用流程,从中分析项目进度滞后的原因,以便项目管理层及时采取纠偏措施进行调整,确保工程项目顺利实施,实现了对项目成本、进度的监控。     

邻近营业线施工既有桥梁自动化监测及费用分析

通过邻近营业线施工中对既有线桥梁进行影响分析,建立三维有限元模型分析不同线间距和不同施工阶段情况下既有线桥梁位移变形情况,对既有线桥梁进行实时监测和数据分析,用于指导现场施工,同时对传统人工监测方法和自动化监测费用分析对比,为后续类似工程施工积累相应的施工经验.     

关于设备状态检修在供电企业中的应用探讨

状态检修是按照设备的实际运行状态来安排检修时间和检修项目。本文根据目前网络结构比较合理,技术监测手段的比较先进,数据管理系统比较完善的情况,明确提出状态检修是一种科学的、先进的检修方法。     

Using technology to improve the management of development impacts on biodiversity

The mitigation hierarchy (MH) is a prominent tool to help businesses achieve no net loss or net gain outcomes for biodiversity. Technological innovations offer benefits for business biodiversity management, yet the range and continued evolution of technologies creates a complex landscape that can be difficult to navigate. Using literature review, online surveys, and semi-structured interviews, we assess technologies that can improve application of the MH. We identify six categories (mobile survey, fixed survey, remote sensing, blockchain, data analysis, and enabling technologies) with high feasibility and/or relevance to (i) aid direct implementation of mitigation measures and (ii) enhance biodiversity surveys and monitoring, which feed into the design of interventions including avoidance and minimization measures. At the interface between development and biodiversity impacts, opportunities lie in businesses investing in technologies, capitalizing on synergies between technology groups, collaborating with conservation organizations to enhance institutional capacity, and developing practical solutions suited for widespread use.     

基于视频图像的车辆检测算法研究

固定镜头下视频序列中的运动汽车目标的检测、分割、跟踪及计数等底层视觉问题进行了研究,提出了计算交通流量的算法。仿真实现表明:此算法可以有效的去噪、检测目标并计数。     

基于遥感与GIS的区域土地利用变化的动态监测与预测研究

本文以广西苍梧县沙头、石桥两镇为例,利用航空遥感调查方法结合GIS技术,定量分析研究区域内土地利用动态变化过程,以及土地利用各类型之间的相互转化状况.运用马尔柯夫原理,建立齐次马尔柯夫链模型中的转移概率矩阵,对研究区未来土地利用演变趋势进行模拟与预测.