高等应用本科院校计算机网络专业实践教学的探索与研究

该文以我院计算机系网络教学实验基地为基础,针对计算机网络与信息安全专业的学生缺乏计算机网络技术应用的实际技能和创新能力的情况,在学生的实际技能、创新能力和主动参与实践意识的培养教学模式进行了探索,总结了在实践教学中的一些新思路以及创新实践教学的思想。     

Construction Management Utilizing 4D CAD and Operations Simulation Methodologies

The paper presents applications of simplified discrete-event simulation (SDESA), and 4D-GCPSU, to the National Stadium of the Beijing 2008 Olympics. Taking into account influential factors, e.g., resource, spatial condition, and the randomness of the construction process, the installation process of the steel-structure was simulated and optimized by using genetic algorithm (GA) optimization methodology. The operations simulation shortened the installation duration by 39 days (about 16% of the original total duration), guided the manufacturers to plan the construction processes, and provided specific suggestions on the entry time of the installation components, resulting in resource allocation optimization, resource saving, and construction efficiency improvement. Combining with the optimized schedule, the 4D visualization environment can discover time-space conflicts timely, and may assist project managers to reschedule the construction activities in tune with the site layout and resource allocation.     

Wireless Sensor Networks for Resources Tracking at Building Construction Sites

We evaluate the technical feasibility of applying emerging wireless network technologies for resources tracking at building construction sites. We first identify practical constraints in solving resource-tracking problems in an enclosed or partially covered environment. We then compare pros and cons of available localization principles and examine the latest wireless communication technologies, including Wi-Fi, Bluetooth, Ultra-Wideband (UWB) and ZigBee. We find that the ZigBee-based wireless sensor network and the received signal strength indicator (RSSI) localization method are most promising to tackle on-site tracking of construction resources. Finally, we anticipate some application challenges associated with deploying wireless sensor networks for resources tracking in the practical context.