Research publications: Recent submissions

Now showing items 2121-2140 of 23370

    • Fast Beam Training for FDD Multi-User Massive MIMO Systems With Finite Phase Shifter Resolution 

      Technology, Harbin Institute; Zheng, F.; Cao, Pan; Xu, H.; Zhu, X. (2021-01-01)
      A fast beam training scheme for the massive antenna arrays is a key to frequency division duplex (FDD) mmWave systems, as channel reciprocity between the down-link (DL) and up-link (UL) channels does not hold in general, ...

    • Part 2: COVID-19 and knowledge for midwifery practice—impact and care of the baby 

      Green, Janet; Petty, Julia; Bromley, Patricia; Fowler, Professor Cathrine; Walker, Karen; Jones, Linda (2021-05-03)
      It is well-known that newborn infants are more susceptible to infection due to their immature host defence mechanisms. However, in relation to the COVID-19 virus it appears that the naivete of the neonatal immune system ...

    • Cross-cultural judgments of spontaneous facial expressions of emotion 

      Matsumoto, David; Olide, Andres; Schug, Joanna; Willingham, Bob; Callan, Mike (2009-10-01)
      We report data concerning cross-cultural judgments of emotion in spontaneously produced facial expressions. Americans, Japanese, British, and International Students in the US reliably attributed emotions to the expressions ...

    • A time-motion analysis of lightweight women's judo in the 2010 world championships 

      Challis, Darren; Scruton, Adrian; Cole, Michael; Callan, Michael (2015-06-01)
      The Olympic sport of judo has a growing base of performance analysis research considering the technical aspects, the tactical aspects and time motion analysis. This study aimed to further analyse this sport by specifically ...

    • Visions of blended learning: identifying the challenges and opportunities in shaping institutional approaches to blended learning in higher education 

      Hill, John; Smith, Karen (2023-02-17)
      Although higher education has engaged in blended learning since the early 1990s and its benefits are well catalogued, research often focuses on individual programmes and less on how institutions envision and engage with ...

    • Unveiling the disc structure in ultraluminous X-ray source NGC 55 ULX-1 

      Barra, F.; Pinto, C.; Walton, D. J.; Kosec, P.; D'Aì, A.; Salvo, T. Di; Santo, M. Del; Earnshaw, H.; Fabian, A. C.; Fuerst, F.; Marino, A.; Pintore, F.; Robba, A.; Roberts, T. P. (2022-11-01)
      Despite two decades of studies, it is still not clear whether ULX spectral transitions are due to stochastic variability in the wind or variations in the accretion rate or in the source geometry. The compact object is also ...

    • Gaia GraL: Gaia DR2 Gravitational Lens Systems. VII. XMM-Newton Observations of Lensed Quasars 

      Connor, Thomas; Stern, Daniel; Krone-Martins, Alberto; Djorgovski, S. G.; Graham, Matthew J.; Walton, Dominic J.; Delchambre, Ludovic; Ducourant, Christine; Teixeira, Ramachrisna; Campion, Jean-François Le; Brok, Jakob Sebastian den; Dobie, Dougal; Galluccio, Laurent; Jalan, Priyanka; Klioner, Sergei A.; Klüter, Jonas; Mahabal, Ashish A.; Negi, Vibhore; Nierenberg, Anna; Petit, Quentin; Jr, Sergio Scarano; Slezak, Eric; Sluse, Dominique; Spíndola-Duarte, Carolina; Surdej, Jean; Wambsganss, Joachim (2022-03-03)
      We present XMM-Newton X-ray observations of nine confirmed lensed quasars at 1 ≲ z ≲ 3 identified by the Gaia Gravitational Lens program. Eight systems are strongly detected, with 0.3-8.0 keV fluxes F 0.3-8.0 ≳ 5 ×10-14 ...

    • Evolution of the spin, spectrum and super-orbital period of the ultraluminous X-ray pulsar M51 ULX7 

      Brightman, Murray; Bachetti, Matteo; Earnshaw, Hannah; Fürst, Felix; Heida, Marianne; Israel, Gian Luca; Pike, Sean; Stern, Daniel; Walton, Dominic J (2022-01-21)
      M51 ULX7 is among a small group of known ultra luminous X-ray pulsars (ULXPs). The neutron star powering the source has a spin period of 2.8 s, orbits its companion star with a period of 2 days, and a super orbital period ...

    • Transient obscuration event captured in NGC~3227 II. Warm absorbers and obscuration events in archival XMM-Newton and NuSTAR observations 

      Wang, Yijun; Kaastra, Jelle; Mehdipour, Missagh; Mao, Junjie; Costantini, Elisa; Kriss, Gerard A.; Pinto, Ciro; Ponti, Gabriele; Behar, Ehud; Bianchi, Stefano; Branduardi-Raymont, Graziella; Marco, Barbara De; Grafton-Waters, Sam; Petrucci, Pierre-Olivier; Ebrero, Jacobo; Walton, Dominic James; Kaspi, Shai; Xue, Yongquan; Paltani, Stéphane; Gesu, Laura di; He, Zhicheng (2022-01-14)
      The relationship between warm absorber (WA) outflows of active galactic nuclei and nuclear obscuration activities caused by optically thick clouds (obscurers) crossing the line of sight is still unclear. NGC 3227 is a ...

    • The Tidal Disruption Event AT2021ehb : Evidence of Relativistic Disk Reflection, and Rapid Evolution of the Disk-Corona System 

      Yao, Yuhan; Lu, Wenbin; Guolo, Muryel; Pasham, Dheeraj R.; Gezari, Suvi; Gilfanov, Marat; Gendreau, Keith C.; Harrison, Fiona; Cenko, S. Bradley; Kulkarni, S. R.; Miller, Jon M.; Walton, Dominic J.; García, Javier A.; Velzen, Sjoert van; Alexander, Kate D.; Miller-Jones, James C. A.; Nicholl, Matt; Hammerstein, Erica; Medvedev, Pavel; Stern, Daniel; Ravi, Vikram; Sunyaev, R.; Bloom, Joshua S.; Graham, Matthew J.; Kool, Erik C.; Mahabal, Ashish A.; Masci, Frank J.; Purdum, Josiah; Rusholme, Ben; Sharma, Yashvi; Smith, Roger; Sollerman, Jesper (2022-09-15)
      We present X-ray, UV, optical, and radio observations of the nearby ($\approx78$ Mpc) tidal disruption event (TDE) AT2021ehb/ZTF21aanxhjv during its first 430 days of evolution. AT2021ehb occurs in the nucleus of a galaxy ...

    • Transient obscuration event captured in NGC 3227. I. Continuum model for the broadband spectral energy distribution 

      Mehdipour, M.; Kriss, G. A.; Kaastra, J. S.; Wang, Y.; Mao, J.; Costantini, E.; Arav, N.; Behar, E.; Bianchi, S.; Branduardi-Raymont, G.; Brotherton, M.; Cappi, M.; Marco, B. De; Gesu, L. Di; Ebrero, J.; Grafton-Waters, S.; Kaspi, S.; Matt, G.; Paltani, S.; Petrucci, P. -O.; Pinto, C.; Ponti, G.; Ursini, F.; Walton, D. J. (2021-06-28)
      From Swift monitoring of a sample of active galactic nuclei (AGN) we found a transient X-ray obscuration event in Seyfert-1 galaxy NGC 3227, and thus triggered our joint XMM-Newton, NuSTAR, and Hubble Space Telescope (HST) ...

    • Acute Dehydration Impairs Performance and Physiological Responses in Highly Trained Judo Athletes 

      Ceylan, Bayram; Kons, Rafael L; Detanico, Daniele; Šimenko, Jožef (2022-06-06)
      Background: The present study investigated highly trained male judo athletes and how a 5% body mass dehydration affects their judo-specific performance and physiological responses. Meth-ods: Nine highly trained international-level ...

    • The Nature of Soft Excess in ESO 362-G18 Revealed by XMM-Newton and NuSTAR Spectroscopy 

      Xu, Yerong; García, Javier A.; Walton, Dominic J.; Connors, Riley M. T.; Madsen, Kristin; Harrison, Fiona A. (2021-05-19)
      We present a detailed spectral analysis of the joint XMM-Newton and NuSTAR observations of the active galactic nuclei (AGN) in the Seyfert 1.5 Galaxy ESO 362-G18. The broadband ($0.3\mbox{--}79$ keV) spectrum shows the ...

    • Dips and eclipses in the X-ray binary Swift J1858.6-0814 observed with NICER 

      Buisson, D. J. K.; Altamirano, D.; Padilla, M. Armas; Arzoumanian, Z.; Bult, P.; Segura, N. Castro; Charles, P. A.; Degenaar, N.; Trigo, M. Díaz; Eijnden, J. van den; Fogantini, F.; Gandhi, P.; Gendreau, K.; Hare, J.; Homan, J.; Knigge, C.; Malacaria, C.; Mendez, M.; Darias, T. Muñoz; Ng, M.; Arabacı, M. Özbey; Remillard, R.; Strohmayer, T. E.; Tombesi, F.; Tomsick, J. A.; Vincentelli, F.; Walton, D. J. (2021-06-01)
      We present the discovery of eclipses in the X-ray light curves of the X-ray binary Swift J1858.6-0814. From these, we find an orbital period of $P=76841.3_{-1.4}^{+1.3}$ s ($\approx21.3$ hours) and an eclipse duration of ...

    • Inhomogeneous Enrichment of Radioactive Nuclei in the Galaxy: Deposition of Live 53 Mn, 60 Fe, 182 Hf, and 244 Pu into Deep-sea Archives. Surfing the Wave? 

      Wehmeyer, Benjamin; López, Andrés Yagüe; Côté, Benoit; K. Pető, Maria; Kobayashi, Chiaki; Lugaro, Maria (2023-02-16)
      While modeling the galactic chemical evolution (GCE) of stable elements provides insights to the formation history of the Galaxy and the relative contributions of nucleosynthesis sites, modeling the evolution of short-lived ...

    • Personalized Nutrition Advice Reduces Intake of Discretionary Foods and Beverages: Findings From the Food4Me Randomized Controlled Trial 

      Livingstone, Katherine; Celis-Morales, Carlos; Navas-Carretero, Santiago; San-Cristobal, Rodrigo; Forster, Hannah; Woolhead, Clara; O’Donovan, Clare; Moschonis, George; Manios, Yannis; Traczyk, Iwona; Gundersen, Thomas; Drevon, Christian; Marsaux, Cyril; Fallaize, Rosalind; Macready, Anna; Daniel, Hannelore; Saris, Wim; Lovegrove, Julie; Gibney, Mike; Gibney, Eileen; Walsh, Marianne; Brennan, Lorraine; Martinez, J Alfredo; Mathers, John (2023-02-13)
      Objectives This study aimed to examine changes in intake of discretionary foods and beverages following a personalized nutrition intervention using two national classifications for discretionary foods. Methods Participants ...

    • SCATTER: A New Common Envelope Formalism 

      Di Stefano, Rosanne; Kruckow, Matthias U.; Gao, Yan; Neunteufel, Patrick G.; Kobayashi, Chiaki (2023-02-14)
      One of the most mysterious astrophysical states is the common envelope (CE) phase of binary evolution, in which two stars are enshrouded by the envelope shed by one of them. Interactions between the stars and the envelope ...

    • Comparing music‐ and food‐evoked autobiographical memories in young and older adults: A diary study 

      Jakubowski, Kelly; Belfi, Amy M.; Kvavilashvili, Lia; Ely, Abbigail; Gill, Mark; Herbert, Gemma (2023-07-19)
      Previous research has found that music brings back more vivid and emotional autobiographical memories than various other retrieval cues. However, such studies have often been low in ecological validity and constrained by ...

    • Utility of Phase Angle to Identify Cachexia and Assess Mortality in End-Stage Renal Disease 

      Seres, David; Mckeaveney, Clare; Adamson, Gary; Davenport, Andrew; Farrington, Ken; Fouque, Denis; Kalanter-Zadeh, Kamyar; Mallett, John; Maxwell, Peter; Mullan, Robert; Nobel, Helen; O’Donoghue, Donal; Porter, Sam; Shields, Joanne; Slee, Adrian; Witham, Miles; Reid, Joanne (2023-02-10)
      Objectives This cross-sectional analysis sought to identify cachexia and assess survival using phase angle (PA) in patients with end-stage renal disease (ESRD) receiving haemodialysis. Methods Patients receiving haemodialysis ...

    • Antimicrobial stewardship implementation before and during the COVID-19 pandemic in the acute care settings: a systematic review 

      Elshenawy, Rasha Abdelsalam; Umaru, Nkiruka; Alharbi, Amal Bandar; Aslanpour, Zoe (2023-02-10)
      Introduction: Antibiotics are widely administered for various indications, leading to increased antimicrobial resistance (AMR) in acute care hospitals. Since the onset of the COVID-19 pandemic, Antimicrobial Stewardship ...