The hybrid intelligence swam algorithm for berth-quay cranes and trucks scheduling optimization problem

Author(s):  
Yi Liu ◽  
Tieqiao Liu
2012 ◽  
Vol 452-453 ◽  
pp. 750-754
Author(s):  
Yi Ma ◽  
Yu Lu ◽  
Li Yun Chen ◽  
Ping Gu

Scientific maintenance tasks scheduling can improve maintenance effectiveness greatly. Aiming for the shortage of the research on the equipment maintenance tasks scheduling optimization (EMTSO) problem, this paper proposes a new method based on GA. The detail is as follows: Make the optimization model of the EMTSO problem by analyzing the characteristics of maintenance tasks scheduling systemically. Aiming for the NP hard characteristic of the problem, design the genetic algorithm to solve it. Finally, use the instance to validate the method. The result reflects that the method proposed by this paper can solve the equipment maintenance tasks scheduling optimization problem, and it has good applicable value in the military domain.


Sensors ◽  
2019 ◽  
Vol 19 (14) ◽  
pp. 3090
Author(s):  
Jie Hao ◽  
Jing Chen ◽  
Ran Wang ◽  
Yi Zhuang ◽  
Baoxian Zhang

Maximizing the utility under energy constraint is critical in an Internet of Things (IoT) sensing service, in which each sensor harvests energy from THE ambient environment and uses it for sensing and transmitting the measurements to an application server. Such a sensor is required to maximize its utility under THE harvested energy constraint, i.e., perform sensing and transmission at the highest rate allowed by the harvested energy constraint. Most existing works assumed a sophisticated model for harvested energy, but neglected the fact that the harvested energy is random in reality. Considering the randomness of the harvested energy, we focus on the transmission scheduling issue and present a robust transmission scheduling optimization approach that is able to provide robustness against randomness. We firstly formulate the transmission scheduling optimization problem subject to energy constraints with random harvested energy. We then introduce a flexible model to profile the harvested energy so that the constraints with random harvested energy are transformed into linear constraints. Finally, the transmission scheduling optimization problem can be solved traditionally. The experimental results demonstrate that the proposed approach is capable of providing a good trade-off between service flexibility and robustness.


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