A new multi-objective optimization control strategy for urban intersection is proposed, which takes the degree of smooth and the degree of equilibrium as objectives. The new method is not limited to the traditional basic traffic parameters, such as delay and queue length.etc, but Applying data fusion technology, by multiple integrating on the basic traffic parameters, the real-time multi-objective values are achieved. The degree of the smooth quantitatively denotes the forced travel time extension because of traffic signal control, saturated traffic flow.ect. The degree of equilibrium denotes the equilibrium degree of traffic flow in space. Illustrating an intersection in Beijing, a simulation model in Paramics is built. The simulation results show that the proposed multi-objective control methods can not only reduce the traffic flow delay, but also makes traffic flow distributing equilibrium in each phase of intersection. This approach is consistent with Chinese saturated traffic flow characteristics.
This paper analyzes the reasons which cause the interferences between TD-LTE and TD-SCDMA systems and studies the types of interferences between the two systems in the same area. It gets the additional isolation requirements of coexistence and co-location of TD-LTE/TD-SCDMA base stations with deterministic method which bases on the minimum coupling loss. At last, some proposals for solving the interferences are given.
There will be some emergency needs which will disable the predetermined route during the vehicle scheduling, and affect the whole distribution process. The existing algorithms cannot efficiently and accurately solve these vehicle scheduling problems with the emergency needs. This article improved the C-K algorithm with the time window and the stowage constraint, studied the carriage of goods in Hebei province, and solved the emergency needs of vehicles scheduling problem, and the operation speed will be faster, the algorithm steps will be not complicated. Thus, vehicles scheduling route with burst situation will be redefined efficiently and accurately, and efficiency will be improved, resources inputs will be reduced, so that the cost will be saved, interests will be maximized. This article improved the existing logistics, and played a role in promoting the logistics capabilities and management.
In order to improve bandwidth utilization and reduce maintenance costs of each system equipment of fast road/highway on Beijing second ring road intersection, the article proposes a countermeasure of using integrated system equipment access method to optimize Beijing fast road/highway on intersection. Compared to the original integrated system equipment access method, this method can effectively improve the bandwidth utilization of the system equipment about 35% and save the cost about 68.1% based on maximum effective retaining the original system equipment.
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