汽车综合性能检测站计算机网络系统

阐述汽车综合性能检测全自动联网改造的网络系统，并着重介绍该系统的布局、系统软件、系统硬件及各工作站点功能的设计和检测工艺流程。     

转向助力器缺油引起的故障

故障现象:一辆韩国现代2.0轿车,正行驶时发动机处发出“沙、沙”异响,几查找没有找到原因。该车又行驶了约000公里后,响声加剧且转向沉重。故障检查:将转向桥举升后起动发机,边转动转向盘边用金属棒听诊,发异响来自转向助力器;检查动力转向油罐,其中已无存油;加足转向助力油试车,异响稍有减轻,但转向仍沉重;解转向助力器检查,原来其中的轴承损坏。故障排除:换上新的转向助力器,加转向助力油后试车,故障即告排除。故障分析:汽车行驶中转弯时,转向力器将产生很高的油压,并传送到转机中起助力作用,同时助力器自身的滑也靠助力油。该车由于长期…     

ERS铺装方案在斜港大桥钢桥面铺装中的应用

依托苏州市斜港大桥钢桥面铺装工程,对比了ERS铺装方案与现阶段其他主流铺装方案的优缺点,对ERS铺装方案各工序施工控制要点进行了总结,以供类似工程参考。     

Genetic programming using dynamic population variation for computational efforts reduction in system modeling

In this paper, we propose genetic programming (GP) using dynamic population variation (DPV) with four innovations for reducing computational efforts. A new stagnation phase definition and characteristic measure are defined for our DPV. The exponential pivot function is proposed to our DPV method in conjunction with the new stagnation phase definition. An appropriate population variation formula is suggested to accelerate convergence. The efficacy of these innovations in our DPV is examined using six benchmark problems. Comparison among the different characteristic measures has been conducted for regression problems and the new proposed measure outperformed other measures. It is proved that our DPV has the capacity to provide solutions at a lower computational effort compared with previously proposed DPV methods and standard genetic programming in most cases. Meanwhile, our DPV approach introduced in GP could also rapidly find an excellent solution as well as standard GP in system modeling problems.     

An Extended Policy Language for Role Resolution in Project-Oriented Workflow

IntroductionIn recent years,increasing attention is beinggiven to ways of role resolution in the context ofworkflow systems[1～3 ] . The mechanism for assign-ing the activities to appropriate available users isreferred to as a role resolution. However,therestill exists no whole solution for complex role reso-lution such as Separation of Roles or Binding ofRoles and several exception situations such as RoleDelegation or Role Unavailable[3 ] .This paper intends to cast light on the man-ageme…     

汽车制动性能的检测

通过分析汽车制动性能各评价指标间的关系，指出了我国现行汽车制动性能检测标准的不合理之外，并总结了影响制动性能检测的因素。