rfid technology has great potential to improve the benefits of supply chain management. auto- manufacturing is a competitive industry that every player of it needs great operation efficiency to gain competitive advantage to survive. rfid systems are good enhancements to supply chain processes, therefore it's obvious that every industry has to pay great attention to this it solution, and in this...

In this paper we present the optical and near-infrared identifications of the 1054 radio sources detected in the 20cm deep radio survey down to a 5σ flux limit of ∼80µJy obtained with the VLA in the VIMOS VLT Deep Survey VVDS-02h deep field. (50% completeness) we identified 718 radio sources (∼74% of the whole sample). The photometric redshift analysis shows that, in each magnitude bin, the rad...

Spectrum Mobility.to Cognitive Radio and the efficient management of spectrum and radio resources in reconfigurable systems. For this purpose, a technical publisher 2010 print to pdf approach for all.big gap between having a flexible cognitive radio, effectively a building block. cognitive radio brain-empowered wireless communications Deployment of cognitive radio networks publisher files to pd...

Radio listening in Zambia is dominated by state-run ZNBC's three radio stations Radio 1, Radio 2 and music/entertainment-based Radio 4. Seventy eight percent of weekly radio listeners in Zambia said they often listen to one of three state-run stations. Zambia also has a few locally focused private or nonprofit, community radio stations, which broadcast in English and/or local provincial languag...

In several merging clusters of galaxies so-called cluster radio relics have been observed. These are extended radio sources which do not seem to be associated with any radio galaxy. Two competing physical mechanisms to accelerate the radio emitting electrons have been proposed: (i) diffusive shock acceleration and (ii) adiabatic compression of fossil radio plasma by merger shock waves. Here the...

In this paper we discuss the demographics of the radio blazar population: (i) what are their parent ('unbeamed') sources and (ii) what magnitude and/or type of evolution have they undergone ? The discussion is based on models of radio source evolution and beaming based on a 'dual population' unification paradigm. These models, developed from radio blazar properties in bright samples, predict bl...

We have performed quasi-simultaneous radio flux density measurements at 2.7 and 10 GHz for all PG quasars with radio flux densities between 4-200 mJy. We find that a large fraction of these sources are variable, flat-spectrum quasars. This brings the total fraction of flat-spectrum quasars with a ratio between radio and optical flux of R > 10 — a value previously used to define a radio-loud qua...

We investigate the MBH−σ∗ relation for radio-loud quasars with redshift z < 0.83 in Data Release 3 of the Sloan Digital Sky Survey (SDSS). The sample consists of 3772 quasars with better model of Hβ and [O III] lines and available radio luminosity, including 306 radio-loud quasars, 3466 radio-quiet quasars with measured radio luminosity or upper-limit of radio luminosity (181 radio-quiet quasar...