Composite structure of sterilization and descaling system for circulating cooling water

In order to resolve the hazard of biofouling and scale in circulating cooling water system of power stations, this paper takes the lead in combining high voltage pulses and high frequency pulses for sterilization and descaling process. It analyzes both electromagnetic effects and biochemical effects on sterilizing and descaling process caused by the high voltage pulses and high frequency pulses respectively. The pulse generator is designed according to the requirements of electromagnetic parameters for effective operation. The design and improvement of process chambers are assisted by electromagnetic field simulation technology. Experimental data prove that the system can output high voltage pulse whose maximum peak value reaches 7 kV and high frequency pulse whose maximum peak value reaches 100 V the frequency ranges from 500 kHz to 2 MHz. The rate of sterilization can be as high as 91,and the rate of descaling reaches 71. This system is expected to achieve the standards of industrial water treatment through further research.     

Restoration algorithm with wavelength reservation collision avoidance in ASON

Aiming at the problem of link fault restoration in ASON, an improved equalizing routing algorithm (ERA) is introduced to proportion the load at the routing phase. In order to solve the easy blocking problem for the network without wavelength converter because of the wavelength continuity constraint, the algorithm WRCA is proposed at the wavelength assignment phase. This algorithm is realized by adding collision detection object (CDO) in the path message of the resource reservation protocol with traffic engineering extension (RSVP TE). Depending on the value of the CD flag, different wavelength selection strategies are applied at the destination node, and the blocks resulting from wavelength reservation collision are reduced. The simulation experiments compare four wavelength assignment algorithms with the same routing algorithm ERA. The results show that compared with the traditional first fit algorithm (FF) and random fit algorithm (RD), the FF and RD employing CD scheme can effectively reduce the blocking ratio of the whole network, and enhance the practical applicability of the restoration algorithms.     

面向重构的机床模块划分研究

综合考虑重构需求、结构功能和生命周期的影响,使用柔性模块划分方法对可重构机床模块 划分进行了研究。采用层次分析法对影响模块形成的因素进行了权重分配,得到了机床零件 之间的交互值并形成了相关矩阵,使用模糊聚类法对相关矩阵进行操作;考虑到可重构机床 的特殊性,对其控制系统也进行了模块划分,最后得到了可重构机床模块划分的总体方案, 为可重构机床的开发打下了基础。     

青岛市学校因病缺课症状监测网络直报系统信息的收集特点和预警机制

目的：分析学校症状监测网络直报系统信息的收集特点和预警机制,总结其在传染病防控工作中的独特作用。方法：分析网络直报系统上报数据对学校传染病预防的效果。结果：网络症状信息直报241 411次,因病缺课症状监测预警处置5 508起。结论：学校因病缺课症状监测网络直报系统有利于学校传染病的早发现,早处置,早防控,做到了快速、准确收集传染病症状预警信息,动态掌握传染病流行趋势,为后续传染病现场流调工作的顺利进行提供了第一手资料。