Browsing University of Hertfordshire by Title

Now showing items 1-20 of 25059

    • A 0.18μm CMOS 300MHz Current-Mode LF Seventh-order Linear Phase Filter for Hard Disk Read Channels 

      Zhu, X.; Sun, Y.; Moritz, J. (Institute of Electrical and Electronics Engineers (IEEE), 2007)
      A 300MHz CMOS seventh-order linear phase gm-C filter based on a current-mode multiple loop feedback (MLF) leap-frog (LF) structure is realized. The filter is implemented using a fully-differential linear operational ...

    • A 0.18μm CMOS 9mW current-mode FLF linear phase filter with gain boost 

      Zhu, X.; Sun, Y.; Moritz, J. (Institute of Electrical and Electronics Engineers (IEEE), 2007)
      The design and implementation of a CMOS continuous-time follow-the-leader-feedback (FLF) filter is described. The filter is implemented using a fully-differential linear, low voltage and low power consumption operational ...

    • A 0.1–5.0 GHz flexible SDR receiver with digitally assisted calibration in 65 nm CMOS 

      Zhang, Xinwang; Chen, Zipeng; Gao, Yanqiang; Xu, Yang; Liu, Bingqiao; Yu, Qian; Sun, Yichuang; Wang, Zhihua; Chi, Baoyong (2018-02-01)
      A 0.1–5.0 GHz flexible software-defined radio (SDR) receiver with digitally assisted calibration is presented, employing a zero-IF/low-IF reconfigurable architecture for both wideband and narrowband applications. The ...

    • 0.6 Tb/s-km multimode fibre feasibility - Experimant using 40 channel DWDM over Quadrature-Subcarrier channels 

      Kourtessis, P.; Quinlan, T.; Rochat, E.; Walker, S.D.; White, I.H.; Penty, R.V.; Parker, M.C. (2002-07)

    • The 1-actor play in Australian drama 

      Ridgman, J (1981)

    • A 1.2 mm MAMBO/IRAM-30 m study of dust emission from optically luminous 2 quasars 

      Omont, A.; Beelen, A.; Bertoldi, F.; Cox, P.; Carilli, C.L.; Priddey, R.; McMahon, R.G.; Isaak, K.G. (2003)
      We report 250 GHz (1.2 mm) observations of redshift 1:8 < z < 2:8 optically luminous (MB < −27:0), radio quiet quasars using the Max-Planck Millimeter Bolometer (MAMBO) array at the IRAM 30-metre telescope. Nine quasars ...

    • A 1.3 mm SMA Survey of 29 Variable Young Stellar Objects 

      Liu, Hauyu Baobab; Dunham, Michael M.; Pascucci, Ilaria; Bourke, Tyler L.; Hirano, Naomi; Longmore, Steven; Andrews, Sean; Carrasco-González, Carlos; Forbrich, Jan; Galván-Madrid, Roberto; Girart, Josep M.; Green, Joel D.; Juárez, Carmen; Kóspál, Ágnes; Manara, Carlo Felice; Palau, Aina; Takami, Michihiro; Testi, Leonardo; Vorobyov, Eduard I. (2018-04-01)
      Context. Young stellar objects (YSOs) may undergo periods of active accretion (outbursts), during which the protostellar accretion rate is temporarily enhanced by a few orders of magnitude. Whether or not these accretion ...

    • A 10-b Fourth-Order Quadrature Bandpass Continuous-Time ΣΔ Modulator With 33-MHz Bandwidth for a Dual-Channel GNSS Receiver 

      Zhang, Junfeng; Xu, Yang; Zhang, Zehong; Sun, Yichuang; Wang, Zhihua; Chi, Baoyong (2017-04-01)
      A fourth-order quadrature bandpass continuous-time sigma-delta modulator for a dual-channel global navigation satellite system (GNSS) receiver is presented. With a bandwidth (BW) of 33 MHz, the modulator is able to digitalize ...

    • A 100 kpc inverse Compton x-ray halo around 4C 60.07 at z = 3.79 

      Smail, I.; Lehmer, B.D.; Ivison, R.J.; Alexander, D.M.; Bower, R.; Stevens, J. A.; Geach, James; Scharf, C.; Coppin, Kristen; van Breugel, W. (2009)
      We analyze a 100 ks Chandra observation of the powerful radio galaxy, 4C 60.07 at z = 3.79. We identify extended X-ray emission with L X ~ 1045 erg s–1 across a ~90 kpc region around the radio galaxy. The energetics of ...

    • A 100 pc elliptical and twisted ring of cold and dense molecular clouds revealed by Herschel around the galactic center 

      Molinari, S.; Bally, J.; Noriega-Crespo, A.; Compiegne, M.; Bernard, J.P.; Paradis, D.; Martin, P.; Testi, L.; Barlow, M.; Moore, T.; Plume, R.; Swinyard, B.; Zavagno, A.; Calzoletti, L.; M. Di Giorgio, A.; Elia, D.; Faustini, F.; Natoli, P.; Pestalozzi, Michele; Pezzuto, S.; Piacentini, F.; Polenta, G.; Polychroni, D.; Schisano, E.; Traficante, A.; Veneziani, M.; Battersby, C.; Burton, M.; Carey, S.; Fukui, Y.; Li, J.Z.; Lord, S.D.; Morgan, L.; Motte, F.; Schuller, F.; Stringfellow, G.S.; Tan, J.C.; Thompson, Mark; Ward-Thompson, D.; White, G.; Umana, G. (2011)
      Thermal images of cold dust in the Central Molecular Zone of the Milky Way, obtained with the far-infrared cameras on board the Herschel satellite, reveal a ~3 × 107 M ring of dense and cold clouds orbiting the Galactic ...

    • A 100-kiloparsec wind feeding the circumgalactic medium of a massive compact galaxy 

      Rupke, David S.~N.; Coil, Alison; Geach, James E.; Tremonti, Christy; Diamond-Stanic, Aleksandar M.; George, Erin R.; Hickox, Ryan C.; Kepley, Amanda A.; Leung, Gene; Moustakas, John; Rudnick, Gregory; Sell, Paul H. (2019-10-31)
      Ninety per cent of baryons are located outside galaxies, either in the circumgalactic or intergalactic medium1,2. Theory points to galactic winds as the primary source of the enriched and massive circumgalactic medium3,4,5,6. ...

    • 1001 Nights 

      Filoseta, Roberto (University of Hertfordshire, 2013-05-17)
      This work revisits the enchanted and magical world of the classic Arabian Nights in light of current events in the Middle East, highlighting in particular some intriguing parallels between the time-wasting narratives ...

    • 100MHz, 6th order, leap-frog gm-C high Q bandpass filter and on-chip tuning scheme 

      Moritz, J.; Sun, Y. (Institute of Electrical and Electronics Engineers (IEEE), 2006)

    • The 106Cd(α, α)106Cd elastic scattering in a wide energy range for γ process studies 

      Ornelas, A.; Kiss, G. G.; Mohr, P.; Galaviz, D.; Fülöp, Zs; Gyürky, Gy; Máté, Z.; Rauscher, T.; Somorjai, E.; Sonnabend, K.; Zilges, A. (2015-08-01)
      Alpha elastic scattering angular distributions of the <sup>106</sup>Cd(α, α)<sup>106</sup>Cd reaction were measured at three energies around the Coulomb barrier to provide a sensitive test for the α + nucleus optical ...

    • 1111 Lincoln Road by Herzog & de Meuron 

      Carta, Silvio (2010)

    • 12 Minutes and the simple seven 

      Kirby, Michael (2013-10-01)

    • A 12-bit 150-MHz 1.25-mm2 CMOS DAC 

      He, Y.; Jiang, J.; Sun, Y. (Institute of Electrical and Electronics Engineers (IEEE), 2004)
      This paper presents a 12-bit 150-MHz current steering DAC with hierarchical symmetrical switching sequence that compensates gradient errors. The circuit of the DAC employs segmented architecture; the least significant bits ...

    • 12-Lead ECG training: The way forward 

      Alinier, Guillaume; Gordon, R.; Harwood, C.; Hunt, B. (2006)
      The teaching of electrocardiography (ECG) monitoring has not changed for decades and still very much relies on access to real patients for practice. However there is nowadays an even greater need for modern training tools ...

    • A 1200-micron MAMBO survey of ELAISN2 and the Lockman Hole - I. Maps, sources and number counts 

      Greve, T.R.; Ivison, R.J.; Bertoldi, F.; Stevens, J. A.; Dunlop, J.S.; Lutz, D.; Carilli, C.L. (2004-11)
      We present a deep, new 1200μm survey of the ELAISN2 and Lockman Hole fields using the Max Planck Millimeter Bolometer array (MAMBO). The areas surveyed are 160 arcmin2 in ELAISN2 and 197 arcmin2 in the Lockman Hole, covering ...

    • A 1200um MAMBO Survey of the ELAIS N2 and Lockman Hole East Fields 

      Greve, T.R.; Ivison, R.J.; Bertoldi, F.; Stevens, Jason; Chapman, S. C.; Smail, I.; Blain, A.W. (Springer Nature Link, 2005)
      Using the MPIfR Max Planck Millimeter Bolometer array (MAMBO) on the IRAM 30m Telescope we have mapped the ELAIS N2 and Lockman Hole East Fields at 1200 μm to a rms noise level of 0.8–1.0 mJy per 11″ beam. The areas surveyed ...