Abstract Ground-based spectroscopy of Ganymede’s surface has revealed the surprising presence dense-phase molecular oxygen (O 2 ) via weak absorptions at visible wavelengths. To date, state and stability this O temperatures pressures are not understood. Its spatial distribution in relation to albedo, expected temperatures, particle irradiation patterns, or composition may provide clues these un...

Hydrous ferric oxides (HFO) are efficient sorbents for inorganic and organic pollutants and therefore have great potentials in environmental science and engineering applications. Freezing and thawing of HFO suspensions leads to the formation of dense HFO aggregates. It facilitates the handling and increases the drying rate of HFO. In this study, we used a combination of pycnometry, gas adsorpti...

Coordination of engineering decisions is a central concern of software engineering. We present a theory in which coordination of engineering decisions is modeled as a distributed constraint satisfaction problem (DCSP). We derive six hypotheses, predicting how the distribution of decisions over developers and the density of constraints among decisions will affect development time, probability th...

The Multicomputer Toolbox includes sparse, dense, and iterative scalable linear algebra libraries. Dense direct, and iterative linear algebra libraries are covered in this paper, as well as the distributed data structures used to implement these algorithms; concurrent BLAS are covered elsewhere. We discuss uniform calling interfaces and functionality for linear algebra libraries. We include a d...

Coordination of engineering decisions is a central concern of software engineering. We present a theory in which coordination of engineering decisions is modeled as a distributed constraint satisfaction problem (DCSP). We derive six hypotheses, predicting how the distribution of decisions over developers and the density of constraints among decisions will affect development time, probability th...

The role of the passing mechanism in traffic flows is examined. Specifically, we consider passing rates that are proportional to the difference between the velocities of the passing car and the passed car. From a Boltzmann equation approach, steady-state properties of the flow such as the flux, average cluster size, and velocity distributions are found analytically. We show that a single dimens...

Intonational phrasing and pitch accent distribution (PAD) have been proposed to be interdependent (Portuguese) and independent properties of prosodic systems (Egyptian). This paper examines the relation between intonational phrasing and pitch accent distribution in two center-southern varieties of European Portuguese Alentejo (Ale) and Algarve (Alg). Sentences obtained in a reading task systema...

We study a weaker formulation of the nullspace property which guarantees recovery of sparse signals from linear measurements by `1 minimization. We require this condition to hold only with high probability, given a distribution on the nullspace of the coding matrix A. Under some assumptions on the distribution of the reconstruction error, we show that testing these weak conditions means boundin...