This WiP describes some preliminary results obtained when experimenting with the priorities of IRQ threads in a real-time version of the Linux kernel. IRQ threads allow to schedule interrupt handlers so that their interference on real-time activities can be controlled. However, the experiments presented in this paper indicate that fixed priority scheduling does not provide enough flexibility fo...

To gain manufacturing efficiencies and reduce manual overhead in our production control cycle, M/A-COM Fab II has developed a custom shop floor control system to manage wafer production. Derived and extended from our previously developed post-fab WIP system, the new fab system realizes significant labor and paper savings. The primary goal of this work was to integrate inefficient, disparate sys...

Using a connectivity matrix, we establish a continuum modeling approach with partial differential equations of conservation laws for simulating materials flow in supply chain networks. A number of existing and new constitutive relationships for modeling velocity are summarized or proposed. To effectively treat strong advection components within the modeling system, we apply discontinuous Galerk...

A set of manufacturers outsource certain operations to a single third-party. Each available day of production at the third party can be booked at a given cost announced by him. Knowing these costs, manufacturers book available production days in a first-come-first-served (FCFS) order so as to optimize their individual cost. The cost for each manufacturer consists of booking and work-in-progress...

The role of WASP-interacting protein (WIP) in the process of F-actin assembly during chemotaxis of Dictyostelium was examined. Mutations of the WH1 domain of WASP led to a reduction in binding to WIPa, a newly identified homolog of mammalian WIP, a reduction of F-actin polymerization at the leading edge, and a reduction in chemotactic efficiency. WIPa localizes to sites of new pseudopod protrus...

The process industries — those firms that add value by mixing, separating, forming andror chemical reactions by either batch or continuous mode — continue to lag behind the discrete industries in the identification and implementation of Ž . effective production and inventory management P&IM techniques. A contributing factor is that the process industries have traditionally been lumped together ...