Zeqiang Zhang

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In many real scheduling environments, a job processed later needs longer time than the same job when it starts earlier. This phenomenon is known as scheduling with deteriorating jobs to many industrial applications. In this paper, we study a scheduling problem of minimizing the total completion time on identical parallel machines where the processing time(More)
Facing the intense competition, rising costs and ever changing consumer demands, many manufacturers switch to mass customization from mass manufacturing. The mass customization assembly line balancing problem arises to smooth the production and decrease the cost. However, the development towards mass customization has caused considerable increases in(More)
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Railway container terminals, where gantry cranes are responsible for loading and unloading containers between freight trains and yards, are important hubs of hinterland logistics transportation. Terminal managers confront the challenge in improving the efficiency of their service. As the most expensive equipment in a terminal, the operational performance of(More)
The high prevalence of herpes simplex virus 2 (HSV-2) infections in humans necessitates the development of a safe and effective vaccine that will need to induce vigorous T-cell responses to control viral infection and transmission. We designed rAd-gD2, rAd-gD2ΔUL25, and rAd-ΔUL25 to investigate whether recombinant replication-defective adenoviruses vaccine(More)
U-shaped assembly lines have been adopted in many manufacturing settings as part of just-in-time production principle. U-shaped line balancing problem (ULBP) is an extension of the traditional line balancing problem, in which tasks can be assigned from both sides of the precedence graph. In this paper, based on the integer programming formulation developed(More)
The mid-low grade sedimentary phosphate ore, abundant in silicate and carbonate gangue minerals, exhibits a poor processability. It is conventionally enriched using high temperature flotation to remove silicate gangues with fatty acid as a collector. Cottonseed oil has been proved to be an efficient collector for achieving ambient temperature flotation of(More)
Assembly-line production systems are most commonly used for large quantity production. Assembly line balancing problem is one of the most important problems of preliminary design stage for flow-line production systems and is the important content of the course of operation management. improve the teaching effect of the content, according to the model of the(More)