面向公共机构与私营企业之间知识转移的组织行为与人力资源管理：文献分析综述（1）

基于人力资源视角对目前有关高校与私营企业之间知识转移渠道的学术研究成果予以述评,给出了文献分析的一般框架,明确了在面向高校一企业知识转移的组织行为和人力资源管理方面的认识缺陷。分析表明：具有最高“关系强度”的知识转移渠道最受企业重视,而大多数知识转移渠道目前并未制度化和正规化。结论认为,在高校．企业的知识转移方面存在显著的管理挑战,这要求对个体参与知识转移的性质和程度有深入的了解。但是,现有研究关注的重点在于知识转移的结果而非过程,因此,未来研究需要重视对个人和组织层面知识转移过程的分析,从而为更优决策的制定提供有价值的信息。     

Design and Analysis of Prioritized Medium Access Control Protocol for Backbone Routers in Wireless Mesh Networks

A Prioritized Medium Access Control (P-MAC) protocol is proposed for wireless routers of mesh networks with quality-of-service provisioning. The simple yet effective design of P-MAC offers strict service differentiation for prioritized packets. A Markov model is developed to yield important performance matrices including the packet blocking probability due to queue overflow and the packet reneging probability due to delay bound. It is further proved that the service time of P-MAC approximates exponential distribution, and can be effectively estimated. The analytic models with preemptive and non-preemptive schemes, validated via simulations, show that P-MAC can effectively support traffic differentiation and achieve very low packet dropping (both reneging and blocking) probabilities when the traffic load is below the channel capacity. When the network is overloaded, P-MAC can still maintain extremely stable and high channel throughput. Moreover, it is demonstrated that P-MAC performs superior in multihop networks, further proving the advantages of the proposed protocol.     

Modeling Car-Following Dynamics During the Starting and Stopping Process Based on a Spring System Model

Car-following models describe how one vehicle follows the preceding vehicles.ln order to better model and explain car-following dynamics,this paper categorizes the state of a traveling vehicle into three sub-processes:the starting(acceleration)process,the car-folloing process,and the stopping(deceleration)process.The stating process primarily involves vehicle acceleration behavior.The stopping process involves not only car-following behavior but also deceleration behavior.This paper regards both the stopping process and the starting process as spring systems.The car-following dynamics during the starting process and the stopping process is modeled in this paper.The parameters of the proposed models,which are represented in the form of trigonometric functions,possess explicit hysical meaning and definitive ranges.We have calibrated the model of the starting process using data form the Traffic Engineering Handbook and ob-tained reasonable results.Compared with traditional stimulus-response car-following mo