The vapor pressure of rubidium was determined in the neighborhood of 330 K from measurements of optical absorption of the resonance lines. A narrow-line source was used and a full analysis of the line profiles was done. Measurements of resonance-broadening depolarization give another check on the Rb vapor pressure in the 430-K range, assuming that theoretical cross section is correct. The resul...

We present 3−79 keV NuSTAR observations of the neutron star low-mass X-ray binary 4U 1636−53 in the soft, transitional and hard state. The spectra display a broad emission line at 5−10 keV. We applied several models to fit this line: A gaussian line, a relativistically broadened emission line model, kyrline, and two models including relativistically smeared and ionized reflection off the accret...

In this paper, an unmanned aerial vehicle (UAV) assisted cooperative communication system is studied, wherein a source transmits information to the destination through an energy harvesting decode-and-forward UAV. It is assumed that the UAV can freely move in between the source-destination pair to set up line of sight communications with the both nodes. Since the battery of the UAV may be limite...

We describe a method for constructing a structural model of an unlabeled target two-dimensional line drawing by analogy to a known source model of a drawing with similar structure. The source case is represented as a schema that contains its line drawing and its structural model represented at multiple levels of abstraction: the lines and intersections in the drawing, the shapes, the structural...

An analysis of the kinematics and ionisation state of the emission line gas of a sample of 14 3CR radio galaxies with redshifts z ∼ 1 is carried out. The data used for these studies, deep long–slit spectroscopic exposures from the William Herschel Telescope, are presented in an accompanying paper. It is found that radio sources with small linear sizes ( ∼ < 150kpc) have lower ionisation states,...

We present near-infrared narrow-and broad-band imaging of the field of GRB 021004, performed with ISAAC on the UT1 of the ESO Very Large Telescope. The narrow-band filters were chosen to match prominent emission lines at the redshift of the absorption-line systems found against the early-time afterglow of GRB 021004: [O iii] at z=1.38 and Hα at z=1.60, respectively. For the z=1.38 system we fin...

Source models for fricative consonants are derived based on aerodynamic principles of sound generation, in conjunction with vocal-tract models obtained from MRI data. Results indicate that a linear source-filter model is adequate for capturing essential spectral characteristics of sustained fricatives below 10 kHz. The hybrid source models employ a combination of acoustic monopole and dipole so...

Creating a plane wave across an antenna under test is important for accurate antenna measurements. This paper optimizes the location and weightings of an array of line sources in order to approximate a plane wave at a given location in space. The amplitude and phase ripples across a desired test aperture are optimized to be much less than that of a uniform array with the same number of elements...

FOSS (Free and Open Source Software) distributions use dependencies and package managers to maintain huge collections of packages and their installations; recent research have led to efficient and complete configuration tools and techniques, based on state of the art solvers, that are being adopted in industry. We show how to encode a significant subset of Free Feature Diagrams as interdependen...

Sjoerd W. Rienstra1,†, Mirela Darau1,2 and Edward J. Brambley3 1Department of Mathematics and Computer Science, TU Eindhoven, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands 2Department of Mathematics and Computer Science, WU of Timişoara, Blvd. V. Parvan 4, Timisoara 300223, Romania 3Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Wilberforce Road, Cambridg...