We consider single-item (r, q) and (s, T) inventory systems with integer-valued demand processes. While most of the inventory literature studies continuous approximations of these models and establishes joint convexity properties of the policy parameters in the continuous space, we show that...

We study the coordination of supply chains with a risk-neutral supplier and a risk-averse retailer. Different from the downside risk setting, in a conditional value-at-risk (CVaR) framework, we show that the supply chain can be coordinated with the revenue-sharing, buy-back, two-part tariff and...

This paper focuses on the performance analysis on a complex remanufacturing system that consists of a disassembling shop, a remanufacturing shop, an assembling shop, and a warehouse. The optimal remanufacturing policy is given. Furthermore, by the matrix-geometric method, the immediate demand...

We consider a two-stage serial inventory system whose cost structure exhibits economies of scale in both stages. In the system, stage 1 faces Poisson demand and replenishes its inventory from stage 2, and the latter stage in turn orders from an outside supplier with unlimited stock. Each...

A weighted embedding for the generalized pontogram {Kn(t): 0[less-than-or-equals, slant]t[less-than-or-equals, slant]1} corresponding pointwise to a renewal process {N(s): 0[less-than-or-equals, slant]s[infinity]} via Kn(t)=n-1/2(N(nt)-tN(n)) is studied in this paper. After proper normalization,...

A generalized pontogram {Kn(t): 0 [less-than-or-equals, slant] t [less-than-or-equals, slant] 1} corresponding pointwise to a renewal counting process {N(x): 0 [less-than-or-equals, slant] x [infinity]} via Kn(t) = n-1/2(N(nt)-tN(n)) is investigated in this paper. A weighted embedding for the...

We study a coordination contract for a supplier-retailer channel producing and selling a fashionable product exhibiting a stochastic price-dependent demand. The product's selling season is short, and the supply chain faces great demand uncertainty. We consider a scenario where the supplier...