This paper considers the supplier selection problem of the limited capacity with multi-product, multi-supplier, multi-vendor and multi-period. And it has established a three-stage supply chain model. It assume that the materials from suppliers which may be differences in quality. Different qualities of finished products are manufactured by different qualities of materials. The rates of transpor...

Year-to-year variability in rainfall has long been recognised as a major issue managing livestock enterprises across Australia’s grazing lands. Extension products documenting have developed over the last 30 years and keenly sought by producers their advisors. This paper describes multi-year from 1889 to 2020 provides basis for classifying 131 of into 18 discrete Wet (7), Average (2) Dry (9) per...

This study examined whether Winnipeg hospitals experience predictable "high-volume periods" in order to determine whether hospital overcrowding might be anticipated and, therefore, avoided. We found that high-volume periods among medical patients occurred during all but one year between 1987 and 1998. Most high-volume periods occurred during influenza seasons. Preventing such recurrent bed pres...

A new mixed-integer programming (MIP) formulation is presented for the production planning of single-stage multi-product processes. The problem is formulated as a multi-item capacitated lot-sizing problem in which (a) multiple items can be produced in each planning period, (b) sequence-independent set-ups can carry over from previous periods, (c) set-ups can cross over planning period boundarie...

This paper discusses the multi-state coherent system composed of multi-state components. First, using the min cut sets or min path sets, we present our simulation algorithm, instead of the general structure function, to calculate the probability that the system is in a specified state. Second, we check the components per period, e.g. one check per year, to obtain the state sequences of all comp...

An integrated model considers all parameters and elements of different deficiencies in one problem. This paper presents a new integrated model of a supply chain that simultaneously considers facility location, vehicle routing and inventory control problems as well as their interactions in one problem, called location-routing-inventory (LRI) problem. This model also considers stochastic demands ...