Search found 3 matches

by egymost
5 years ago
Forum: Modeling
Topic: help: basic eoq for perishable items
Replies: 1
Views: 2326

help: basic eoq for perishable items

can anyone assist in this? Consider the following modification of the basic EOQ model. When the inventory is at positive level X(t), in addition to demand draining inventory at rate gamma, the inventory perishes (due to e.g. items expiring or becoming defective) at infitesimal rate X(t)dt. Thus the ...
by egymost
5 years ago
Forum: Modeling
Topic: help: qr policy with backlogging and varying demand
Replies: 0
Views: 2592

help: qr policy with backlogging and varying demand

can anyone assist with this? Consider the following modification of the EOQ model with backlogging. When the inventory is positive, demand arrives at rate lamda1; when the inventory is negative, demand arrives at rate lamda2. Suppose that, there are parameters k; b; h > 0 associated with the problem...
by egymost
5 years ago
Forum: Solvers
Topic: BARON/Couenne problem
Replies: 1
Views: 3539

BARON/Couenne problem

Dear All

I am requested to solve the following using deterministic global optimization solver BARON or Couenne in GAMS using, and I have no idea how to do it. Please help

min |x1|+2|x2|-|x3|
st
x1+x2-x3 <= 10
x1-3x2+2x3=12