The Price of Stability in Selfish Scheduling Games

Singapore Management Universit

The Price of Stability in Selfish Scheduling Games

10.3233/WIA-2009-0171Web Intelligence and Agent Systems74321-33

A POMDP model for guiding taxi cruising in a congested urban city

10.1007/978-3-642-25324-9_36Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)7094 LNAIPART 1415-42

Magnetic phases and anisotropy in Gd-doped GaN

In this work we present a detailed study of the magnetic properties of GaN:Gd layers with different Gd content (6x10^(15) to 1x10^(19) cm^^ (-3)) grown by reactive molecular beam epitaxy. The temperature dependence of the magnetic properties suggests the existence of at least two ferromagnetic phases with different order temperatures. The coexistence of two ferromagnetic phases is explained within the framework of the phenomenological model, introduced previously by Dhar [Phys. Rev. Lett. 94, 037205 (2005)]. The layers are also found to exhibit a magnetic anisotropy, with the hard axis along the growth direction and an easy plane parallel to the surface. Moreover, the saturation magnetization shows a dependence on the orientation of the magnetic field, which may result from the anisotropy in the polarization induced in the GaN matrix by the internal and external magnetic fields

Characterization and mass balance of trace elements in an iron ore sinter plant

AbstractEnvironmental legislation is becoming more restrictive in several industrial sectors, especially in the steel industry, which is well known for its large pollution potential. With the recent growth of interest in effects of trace elements on the environment and health, the inclusion of emission limits on these elements in this legislation has become increasingly popular. This article aims to describe the partitioning of trace elements between the products (sinter) and plant emissions in an iron ore sinter plant, aiming to better understand the behavior of these elements in the sintering process to eventually support interventions to modify these partitions. Chemical characterization of several sintering inputs was initially performed, revealing that the steel-making residues contained large concentrations of trace elements, whereas low concentrations were observed in the flux. Based on the trace element concentrations, we analyzed the injection of trace elements in a sintering pilot using a sintering mixture. Mass balance was then used to determine the theoretical partitioning of trace elements in the sinter and emissions; cadmium, nickel, lead, mercury, and copper exhibited greater tendencies to concentrate in atmospheric emissions

Resource-constrained scheduling for maritime traffic management

National Research Foundation (NRF) Singapore under Corp Lab @ Universit

Real-Time Supply Chain Control via Multi-Agent Adjustable Autonomy

10.1016/j.cor.2007.01.027Computers and Operations Research35113452-3464CMOR