Children with a history of a suspected swallowed radio-opaque foreign body should undergo radiographic examination of the nasopharynx even in the absence of symptoms and signs. Failure to identify and remove an object at this site can result in potentially fatal consequences.

A new method of deriving the cosmological evolution of radio AGN is described which is based on the premise of unified models for quasars and radio galaxies. The 'starburst vs monster' debate takes place on several levels, for example the relation between starburst and AGN nuclear activity[1] and between background contributions[2]. The original version of the Madau diagram [3] led several auth...

Attaching visual tags such as barcodes to some elements in a scene allows applications such as navigation, handling industrial objects, or augmented reality. In the past few years, a new type of non-visual tags has been the object of intensive developments: Radio-Frequency (RF) Tags. In this paper we present the architecture of a machine vision system that uses RF Tag identification (RFID). RFI...

Statistical investigations of samples of quasars have established that clusters of properties are correlated. The strongest trends among the ultraviolet emission-line properties are characterized by the object-to-object variation of emission from low-velocity gas, the so-called " intermediate-line region " or ILR. The strongest trends among the optical emission-line properties are characterized...

In a number of astrophysical applications one tries to determine the twodimensional or three-dimensional structure of an object from a time series of measurements. While most methods used for reconstruction assume that object is static, the data are often acquired over a time interval during which the object may change significantly. This problem may be addressed with timedependent reconstructi...

Statistical investigations of samples of quasars have established that clusters of properties are correlated. The strongest trends among the ultraviolet emission-line properties are characterized by the object-to-object variation of emission from low-velocity gas, the so-called \intermediate-line region" or ILR. The strongest trends among the optical emission-line properties are characterized b...

LSI+61 303 is an exotic binary system consisting of a ∼ 10M⊙ B star and a compact object which is probably a neutron star. The system is associated with the interesting radio source GT 0236+610 that exhibits bright radio outbursts with a period of 26.5 days. We report the results of continuous daily radio interferometric observations of GT 0236+610 at 2.25 and 8.3 GHz from 1994 January to 1996 ...

background and objectives: there are different types of vascular access. we compared the patency rate for six months in ulnar-basilic fistula and radio-cephalic fistula for vascular access in hemodialysis patients.   methods: the study was performed on 60 patients of 50.6±13.5 years of age with end-stage renal failure undergoing hemodialysis from 2012-2014 in imam ali hospital in zahedan. patie...

This work proposes a new approach to determine the spatial location and orientation of an object using measurements performed on the object itself. The on-board triangulation algorithm we outline could be implemented in lieu of, or in addition to, well-known alternatives such as Global Positioning System (GPS) or standard triangulation, since both of these correspond to significantly different ...

A problem with object-oriented simulation models is that internal model states are hidden and cannot be monitored easily. Object-oriented models are essentially black-box models. This article describes a method to expose the internal states of an object-oriented simulation model. Exposure of the states is achieved though application of the Observer software pattern in the form of data sources. ...