Raw Material Prices at New Record Highs

Acquisition Management Under Fluctuating Raw Material Prices

We study a continuous-review acquisition problem, in which the raw material price follows a discrete-state Markov process and demand is compound Poisson. We show that one optimal policy is of the order-up-to type. Under our mean reversion and time continuity conditions, we further show that the order-up-to levels are decreasing at the current price level. At the same time, our computational stu...

Raw Material Management at Welch's, Inc

Pallets B Raw Material

We concentrate on a family of discrete event systems obtained from a simple modular design principle that include in a controlled way primitives to deal with concurrency, decisions, synchronization, blocking , and bulk movements of jobs. Due to the functional complexity of such systems, reliable throughput approximation algorithms must be deeply supported on a structure based decomposition tech...

Record highs of sexually transmitted infections in UK's MSM.

Men who have sex with men (MSM) in the UK are experiencing recordhigh diagnosis rates for various sexually transmitted infections (STIs) including chlamydia, gonorrhoea, and HIV. Data from Public Health England (PHE) showing these increases were recently presented at the conference Sex, Drugs, and MSM in Birmingham, UK (Nov 1), convened by the British Society for Sexual Health and HIV (BASHH) a...

An Exact Method for Berth Allocation at Raw Material Docks

This paper studies a short-term berth allocation problem encountered in the Baoshan Iron and Steel complex. A mathematical model is developed for the problem to minimize the total tardiness particularly considering special industrial characteristics. A lower bound derived by performing a Lagrangian relaxation, along with appropriate branching rules, is incorporated into a branch and bound algor...