in this study, a new stochastic model is proposed to deal with a multi-product, multi-period, multi-stage, multi-site production and transportation supply chain planning problem under demand uncertainty. a two-stage stochastic linear programming approach is used to maximize the expected profit. decisions such as the production amount, the inventory level of finished and semi-finished product, t...

The study of robustness the metro rail network in Chengdu, a central city western China, contributes to stability as well safe operation network. Based on complex theory, Space-L topological structure model constituted by first 9 lines Chengdu is constructed, and its characteristics are analyzed properties such degree distribution, average path length, clustering coefficient scale-free degree. ...

Abstract A key objective of decomposition analysis is to identify a factor (the “mediator”) contributing disparities in an outcome between social groups. In analysis, scholarly interest often centers on estimating how much the disparity (e.g., health Black women and White men) would be reduced/remain if we set mediator education) distribution one group equal another. However, causally identifyi...