The juvenile disciform macular degeneration is a non-inflammatory condition occurring in young people during the second and third decades tending to resolve in the course of a few months. de Schweinitz (1926), Junius (1930), and Davis and Sheppard (1935) have described cases ?f macular lesion similar to the senile disciform degeneration occurring in young subjects. The ophthalmoscopic examinati...

This paper presents two alternative decomposition approaches for the efficient solution of multistage, multiproduct batch scheduling problems comprising hundreds of batch operations. Both approaches follow the principle of first obtaining a good schedule (constructive stage), by considering only a subset of the full set of orders at a time, and then improving it (improvement stage) by applying ...

Modeling and Computational Strategies for Optimal Development Planning of Offshore Oilfields under Complex Fiscal Rules Vijay Gupta and Ignacio E. Grossmann Department of Chemical Engineering, Carnegie Mellon University Pittsburgh, PA 15213 Abstract The main goal of this paper is to extend a simple NPV (net present value) based optimal oilfield development planning model to include complex fisc...

We investigate how the heat flux $Nu$ scales with imposed temperature gradient $Ra$ in homogeneous Rayleigh–Bénard convection using one-, two- and three-dimensional simulations on logarithmic lattices. Logarithmic lattices are a new spectral decimation framework which enables us to span an unprecedented range of parameters ( , $Re$ $\Pr$ ) test existing theories little computational power. firs...

n A common decision in openpit mining is to determine the extraction sequence of notional three-dimensional production blocks so as to maximize the net present value of the extracted orebody, while adhering to precedence and operational resource constraints. This openpit block sequencing (OPBS) problem is commonly formulated as an integer program, with binary variables representing if and when ...

We study the vibrational decoherence dynamics of an iodine molecule in a finite krypton cluster comprising the first solvation shell. A normal mode analysis allows us to successively increase the complexity of the description. For the ground state dynamics, comparison with experimental matrix results shows that already four degrees of freedom are sufficient to capture the main decoherence mecha...

This paper argues that endogenous restructuring processes within firms towards analytical and interactive non-routine tasks (like problem-solving and organizational activities, respectively), triggered by advances in information and communication technologies (ICT) and rising supply of educated workers, are associated with an increase of wage inequality within education groups. We show that thi...

In this article, the use of software design patterns for modeling the stages of a compiler is presented. The compiler is generated for expressing disjunctions and logic propositions into optimization mathematical programs. It works linked to a mathematical modeling system, because the introduction of logic into those programs completes them instead of replacing them. It works as a post-compilat...