Browsing by Title

Now showing items 23944-23963 of 24309

    • Why we need a survey of unions 

      Fiorito, Jack; Gall, Gregor (2012)
      Unions represent millions of workers in both Britain and the U.S. despite substantial membership declines over the last thirty years. Union influence and trends contained therein are major concerns to a broad range of ...

    • Why weight should be the fifth vital sign we check 

      Scott, Patricia (2017-03-10)
      The disturbing fact that more than 1.9 billion adults across the world are overweight was revealed in the Global Burden of Disease Study in 2013. The study classes more than 600 million of these people as obese, representing ...

    • Why will rat's go where rats will not 

      Hayes, J.; Murphy, V.; Davey, N.; Smith, Pamela; Peters, L. (2002)
      Experimental evidence indicates that regular plurals are nearly always omitted from English compounds (e.g., rats-eater) while irregular plurals may be included within these structures (e.g., mice-chaser). This phenomenon ...

    • Why z > 1 radio-loud galaxies are commonly located in protoclusters 

      Hatch, N. A.; Wylezalek, D.; Kurk, J. D.; Stern, D.; Breuck, C. De; Jarvis, M.J.; Galametz, A.; Gonzalez, A. H.; Hartley, W. G.; Mortlock, A.; Seymour, N.; Stevens, J. A. (2014-11-21)
      Distant powerful radio-loud active galactic nuclei (RLAGN) tend to reside in dense environments and are commonly found in proto-clusters at z > 1.3. We examine whether this occurs because RLAGN are hosted by massive galaxies, ...

    • A Wicked Path to Success 

      Dalcher, Darren (2013-01)

    • A wide deep infrared look at the Pleiades with UKIDSS : New constraints on the substellar binary fraction and the low-mass initial mass function 

      Lodieu, N.; Dobbie, P. D.; Deacon, N. R.; Hodgkin, S. T.; Hambly, N. C.; Jameson, R. F. (2007-09-01)
      We present the results of a deep wide-field near-infrared survey of 12 deg2 of the Pleiades conducted as part of the United Kingdom Infrared Telescope (UKIRT) Infrared Deep Sky Survey (UKIDSS) Galactic Cluster Survey (GCS). ...

    • Wide optical lenses for atomic beams. 

      Steuernagel, O. (IEEE, 2009)
      The field of atom-optics offers considerable potential in fundamental and applied physics, both for imaging atoms and their deposition (to create nano-structures). Here we work in the paraxial approximation throughout and ...

    • Wide-Field Infrared Imaging Polarimetry of the NGC 6334 Region: A Nest of Infrared Reflection Nebulae 

      Hashimoto, J.; Tamura, M.; Kandori, R.; Kusakabe, N.; Nakajima, Y.; Kurita, M.; Nagata, T.; Nagayama, T.; Hough, J.; Chrysostomou, A. (2008)

    • Wide-field Infrared Polarimetry of the ρ Ophiuchi Cloud Core 

      Kwon, J.; Tamura, M.; Hough, J.~H.; Nakajima, Y.; Nishiyama, S.; Kusakabe, N.; Nagata, T.; Kandori, R. (2015-09-21)
      We conducted wide and deep simultaneous JHKs-band imaging polarimetry of the ρ Ophiuchi cloud complex. Aperture polarimetry in the JHKs band was conducted for 2136 sources in all three bands, of which 322 sources have ...

    • The wide-field infrared survey explorer properties of complete samples of radio-loud active galactic nucleus 

      Gürkan, G.; Hardcastle, M.J.; Jarvis, M.J. (2014-03-01)
      We present an analysis of four complete samples of radio-loud active galactic nucleus (AGN; 3CRR, 2Jy, 6CE and 7CE) using near- and mid-IR data taken by theWide-field Infrared Survey Explorer (WISE). The combined sample ...

    • Wide-field motion integration in fly VS cells : insights from an inverse approach 

      Torben-Nielsen, Ben; Stiefel, Klaus M. (2010)
      Fly lobula plate tangential cells are known to perform wide-field motion integration. It is assumed that the shape of these neurons, and in particular the shape of the subclass of VS cells, is responsible for this type of ...

    • Wide-field optical imaging on ELAIS N1, ELAIS N2, First Look Survey and Lockman Hole : Observations and source catalogues 

      Gonzales-Solares, E.; Irwin, M.; McMahon, R.G.; Hodgkin, S.; Lewis, J.R.; Walton, N.A.; Jarvis, M.J.; Marchetti, L.; Oliver, S.; Perez-Fournon, I.; Siana, B.; Surace, J.; Vaccari, M. (2011)
      We present u-, g-, r-, i- and z-band optical images and associated catalogues taken primarily with the Isaac Newton Telescope Wide Field Camera on the European Large Area ISO Survey (ELAIS) N1 and N2, First Look Survey and ...

    • The wide-field, multiplexed, spectroscopic facility WEAVE: Survey design, overview, and simulated implementation 

      WEAVE consortium; Jin, Shoko; Trager, Scott C.; Dalton, Gavin B.; Aguerri, J. Alfonso L.; Drew, J. E.; Falcón-Barroso, Jesús; Gänsicke, Boris T.; Hill, Vanessa; Iovino, Angela; Pieri, Matthew M.; Poggianti, Bianca M.; Smith, D. J. B.; Vallenari, Antonella; Abrams, Don Carlos; Aguado, David S.; Antoja, Teresa; Aragón-Salamanca, Alfonso; Ascasibar, Yago; Babusiaux, Carine; Balcells, Marc; Barrena, R.; Battaglia, Giuseppina; Belokurov, Vasily; Bensby, Thomas; Bonifacio, Piercarlo; Bragaglia, Angela; Carrasco, Esperanza; Carrera, Ricardo; Cornwell, Daniel J.; Domínguez-Palmero, Lilian; Duncan, Kenneth J.; Famaey, Benoit; Fariña, Cecilia; Gonzalez, Oscar A.; Guest, Steve; Hatch, Nina A.; Hess, Kelley M.; Hoskin, Matthew J.; Irwin, Mike; Knapen, Johan H.; Monguió, Maria; Raddi, Roberto; Drake, Alyssa; Gledhill, T. M.; Hardcastle, Martin J.; Harris, Amy; Jarvis, Matt J.; Read, Shaun C.; Williams, Wendy L.; Wright, Nicholas J. (2023-03-11)
      WEAVE, the new wide-field, massively multiplexed spectroscopic survey facility for the William Herschel Telescope, will see first light in late 2022. WEAVE comprises a new 2-degree field-of-view prime-focus corrector system, ...

    • Wideband Back-Cover Antenna Design Using Dual Characteristic Modes With High Isolation for 5G MIMO Smartphone 

      Hu, Wei; Chen, Zhan; Qian, Long; Wen, Lehu; Luo, Qi; Xu, Rui; Jiang, Wen; Gao, Steven (2022-01-28)
      A novel method of designing a wideband high isolated dual-antenna pair using dual characteristic modes (CMs)is presented for fifth-generation (5G) multiple-input multiple output (MIMO) smartphone applications. A set of ...

    • Wideband Circularly Polarized Reflectarray Antenna Using Rotational Symmetrical Crossed Dipoles 

      Wen, Lehu; Gao, Steven; Luo, Qi; Hu, Wei; Sanz-Izquierdo, Benito; Yang, Xue-xia (2023-05-30)
      A wideband circularly polarized (CP) reflectarray (RA) antenna using rotational symmetrical crossed dipoles is presented. This is the first time investigating coupled crossed dipoles as the unit cell for wideband reflection ...

    • Wideband Differentially Fed Dual-Polarized Antenna by Using Three-Strip Transmission Lines 

      Wen, Le-Hu; Gao, Steven; Luo, Q.; Sanz-Izquierdo, Benito; Ren, Xiaofei; Wu, Jian (2021-07-01)
      A new method of designing a wideband differentially fed dual-polarized antenna by using three-strip transmission lines (TS-TLs) is presented. A wideband power divider composed of four TS-TLs is firstly proposed and illustrated ...

    • Wideband Differentially-Fed Slot Antenna and Array With Circularly Polarized Radiation for Millimeter-Wave Applications 

      Wen, Lehu; Gao, Steven; Hu, Wei; Luo, Qi; Yang, Xue-Xia; Sanz-Izquierdo, Benito (2022-01-28)
      A wideband differentially-fed slot antenna is presented for millimeter-wave (mmWave) applications. A novel method of using stepped corner-shaped slot is first utilized to establish the wideband circularly polarized (CP) ...

    • A wideband linear tunable CDTA and its application in field programmable analogue array 

      Hu, Zhenhua; Wang, Chunhua; Sun, Jingru; Sun, Yichuang; Jin, Jie (2016-09-01)
      In this paper, a NMOS-based wideband low power and linear tunable transconductance current differencing transconductance amplifier (CDTA) is presented. Based on the NMOS CDTA, a novel simple and easily reconfigurable ...

    • A Wideband Metal-Only Transmitarray With Two-layer Configuration 

      Hu, Wei; Dong, Jianshen; Luo, Qi; Cai, Yuan-Ming; Liu, Xuekang; Wen, Lehu; Jiang, Wen; Gao, Steven S.C. (2021-05-18)
      This letter presents a novel wideband metal-only transmitarray (TA) design. Up to date, existing works on metal-only TAs use at least three layers spaced by air gaps. Compared to these designs, the presented TA only has ...

    • A Wideband Triple-Mode Differentially-Fed Microstrip Patch Antenna 

      Liu, Xuekang; Hu, Wei; Gao, Steven S.C.; Wen, Lehu; Luo, Qi; Xu, Rui; Liu, Ying (2021-04-21)
      A wideband differentially-fed microstrip patch antenna (MPA) with tripe-resonant modes is presented in this letter. The proposed triple-mode MPA is realized by combining two dual-mode MPAs (MPA-I and MPA-II) with different ...