The development of low-cost non-noble metal ORR catalysts has important practical significance for the development of fuel cells and metal-air battery. In this work, an S/N codoped carbon nanotube was...
Hydrogen production by water-splitting is a very promising strategic energy technology and one of the most important means to obtain green hydrogen. It is of great practical significance to develop...
In this paper, the periodic review stochastic inventory control problem is investigated where the logistics cost consists of holding costs, shortage costs and ordering costs. The goal is to coordinate a sequence of orders of a single commodity, aiming to supply stochastic demands over a discrete finite horizon with minimum expected costs. Under some assumptions, the convexity of the cost function is proved and the global optimal solution can be given by explicit form. Finally, the numerical examples are presented to illustrate the validity for solving this model using Simulated Annealing algorithm.
During the construction of the customer-centered energy Internet marketing service system (hereinafter referred to as "power marketing 2.0"), a unified work order system with the "1233" function was built by referring to the sap work order model, which solved many complex practical problems. These questions include: the work order channel information is not connected, the work order distribution is not intelligent, the work order cost is not automatically collected, and the work order data value mining is not sufficient, etc. It can not only realized unified data aggregation, unified scheduling management, unified cost collection and unified information release, but also achieved the four improvements of "customer satisfaction, professional ability, personnel efficiency and experience benefit".
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