Abstract: The homogeneous nucleation temperature of water droplets 15?20 ? in radius falling in different gaseous environments has been measured. After allowance has been made for different thermal relaxation times and equilibrium ...

Abstract: The irregularity of particle motions during quasi-static deformation is investigated using discrete element (DEM) simulations of sphere and sphere-cluster assemblies. A total of three types of interparticle movements are ...

Abstract: The accumulation of high-molecular-weight organic compounds is a common phenomenon in membrane bioreactors (MBRs). It is currently not known to what extent accumulation occurs in full-scale plants because relevant tests ...

Abstract: Employing 211 nocturnal radiometersonde observations of upward upward infrared flux, air temperature, and relative humidity in the atmosphere, the water vapor flux emissivity as a function of optical depth has been determined. ...

Abstract: Pavement management systems inventory historical and current conditions of roadway networks, predict the future conditions of such networks, and suggest schedules for maintenance, repair, and rehabilitation activities. ...

Abstract: This research introduces the use of approximate dynamic programming to overcome a variety of limitations of distinct infrastructure management problem formulations. The form, as well as the parameters, of a model specifying ...

Abstract: The Nimbus II meteorological satellite permitted a direct comparison of analyses of satellites and balloonborne radiometer measurements of upward radiant emittance over Antarctica during the winter of 1966. Daily terminal ...

Abstract: Stable and efficient algorithms are presented for a three-dimensional particle for discrete-element simulations. The particle, termed an “ovoid,” approximates an axisymmetric ellipsoid but is composed of two spherical caps ...