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This paper studies the effect of random supply on the inventory decision of a newsvendor. For risk-neutral newsvendor, we find that the optimal order quantity is affected by random yield and the combination of random yield and capacity, but not affected by capacity uncertainty. For risk-averse newsvendor, we consider the newsvendor problem with a Value-at-Risk (VaR) constraint and the newsvendor model...
Estimation of bus travel time is one of crucial issues for passengers to let them know their departure time and arrival time at the destination, and to reduce their waiting time at the bus stop. Furthermore, it can also help to promote the development of city public transportation. To estimate bus travel time, it is worth of knowing whether target routes for passenger's travel is unstable or not,...
Comprehensive evaluation is an important part of systems engineering but its evaluation results remains uncertainty. The chief aim of this paper is to develop a novel model which could be used to obtain the drought degree reasonably and accurately. It requires a great deal of further research effort in the systems evaluation because of the uncertainty which is regarded in terms of information entropy...
It is unascertained and non-linear that evaluates the durability of concrete structure factors and their impact. Accordingly, selected the most impact on the durability of concrete structures to assess factors as indexes, established unascertained measure comprehensive evaluation model. Applications by the model showed that the assessment result can objectively reflect the durability of concrete structure,...
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