531 research outputs found
Measurement of the B0–B0 oscillation frequency Δmd with the decays B0→D−π+ and B0→ J/ψK∗0
No full textThe B
0
–B
0
oscillation frequency Δmd is measured by the LHCb experiment using a dataset corresponding
to an integrated luminosity of 1.0 fb−1
of proton–proton collisions at √
s = 7 TeV, and is found to be
Δmd
=0.5156±0.0051 (stat.)±0.0033 (syst.) ps−1
. The measurement is based on results from analyses
of the decays B
0
→ D
−π
+ (D
−
→ K
+π
−π
−) and B
0
→ J/ψK
∗0
(J/ψ →μ
+μ
−,K
∗0
→ K
+π
−) and
their charge conjugated modes
Digital afx: digital dressing and affective shifts in Sin City and 300
No full textIn Sin City (Robert Rodriguez, 2005) and 300 (Zack Snyder, 2006) extensive
post-production work has created stylised colour palettes, manipulated areas
of the image, and added or subtracted elements. Framing a discussion around
the terms ‘affect’ and ‘emotion’, this paper argues that the digital technologies used in Sin City and 300 modify conventional interactions between
representational and aesthetic dimensions. Brian Massumi suggests affective
imagery can operate through two modes of engagement. One mode is
embedded in a meaning system, linked to a speci?c emotion. The second
is understood as an intensi?cation whereby a viewer reacts but that reaction is
not yet gathered into an alignment with meaning. The term ‘digital afx’
is used to describe manipulations that produce imagery allowing these two
modes of engagement to coexist. Digital afx are present when two competing
aesthetic strategies remain equally visible within sequences of images. As a
consequence the afx mingle with and shift the content of representation
Anomalous women in fifteenth-century castilian ballads
No full textIn this thesis I examine anomalous women in fifteenth-century ballads. As well as taking into account the exterior socio-political factors moulding the romancero development, I look closely at the internal workings such as the literary tools affecting women’s depiction. Scholarship has already produced a number of studies with respect to women in the romancero. However, there has not yet been a comprehensive study, and so in this thesis I am looking to establish paradigms of acceptable and unacceptable behaviours and attitudes with respect to their literary depiction. Having logged the details of almost three hundred ballads, only a dozen or so stand out as containing women not conforming to an ideal and orthodox type that dominates the genre. I consider these ideal women (religious and secular) in Chapters II and III respectively. The subsequent chapters address women who are anomalous women within sub-categories. 'Provocative Doncellas' includes El caballero burlado, also known as La hija del rey de francia. Rosaflorida, and ¡Hélo, helo por do viene. 'Serranillas and Women in the Natural Environment' looks at Estáse la gentil dama and Fontefrida. The chapter on 'Dissatisfied Women' considers Romance de la bella malmaridada. Rosa Fresca, and Romance de Durandarte. Finally, I consider Mora Moraima as a paradigm of the 'Ethnically Marginalised Woman'. For the most part I use Brian Dutton'ร El cancionero del siglo XV: с. 1360- 1520, although some versions Dutton's cancioneros are incomplete, therefore I note when I use another source for the text
A Necessary Haunting
No full textNotice: In light of unforeseen circumstances concerning the COVID-19 pandemic, certain elements of the paper regarding audience interaction are no longer possible yet are still integral to the messages and ideas of the overall project A Necessary Haunting is a multimedia installation showing the cultural effects of a legend based, it is to be presumed, in the Maryland town of Loketon. A short narrative film titled ?Loketon Station? dramatizes events described, presumably, by Remy Lazarus in his anthology novel A Haunting in Loketon, which details the reality-shifting forces of a supernatural zone. The effects this legend has on a town across time are shown through ? again, presumably ? a historical society'stravel video and sculptural elements intended to bring the audience into the fiction. All elements described as ?presumed? so far are fictional. I am the sole creator of all content in this written theses and exhibition. I am assuming the roles of author Remy Lazarus, filmmaker Adan Rodriguez (a fictionalized version of myself), as well as the Loketon Tourism Office. In this document, structured as a book, I have included a manuscript written by Lazarus describing his process, my own analysis of his writing, insight into the creation of the short film, and the perspective of the tourism office displaying these various elements. An appendix includes a script of the film along with images to give further detail of the process (storyboards, location photos, research images, etc.). In my metatextual writing and installation, I blur the line between fact and fiction. On the one hand, I uncover the deeper meanings of the events that presumably took place in the Maryland town through the study of symbol and technique. On the other hand, I point to media'sability to influence society and provide evidence for the unreal
In-flight characterization of the Hyper-Angular Rainbow Polarimeter (HARP2) on the NASA PACE mission
No full textProceedings Volume 13192, Sensors, Systems, and Next-Generation Satellites XXVIII; 131920H (2024), 16-20 September 2024, Edinburgh, United KingdomThe Hyper-Angular Rainbow Polarimeter (HARP2) is a novel wide-field of view imaging polarimeter instrument on the recently-launched NASA Plankton Aerosol Cloud ocean Ecosystem (PACE) mission. Since launch on February 8 2024, HARP2 has taken over 6 months of global Earth data. In order for this data to meet scientific quality standards, we must ensure that it is as accurate as possible and over long periods of time. We use well-characterized Earth targets, such as Saharan deserts, as well as regular views of the Sun and dark frames to trend our on-orbit calibration. In this work, we discuss the preliminary performance trends derived from these activities and how well they compare with the HARP2 prelaunch calibration.We acknowledge the tireless support of the ESI science and engineering team in the development and commissioning of HARP2 including Lorraine Remer, Dominik Cieslak, Danny Nelson, Ian Decker, Rachel Smith, Andrew Taylor, Joe Shields, Yomiyu Fekadu, Ben Cramer, and Aharon Turpie. HARP2 instrument activities on-orbit would not be possible without the support of PACE Flight Operations Team and Mission Operations Team, and especially Carissa Arillo, Frederick Patt, Ulrik Gliese, Leland Chemarys, Carl Reis, Angel Butts, Michelle Tamoria, Bob Schweiss, Dustyn Strosnider, Brian Cairns, and Kirk Knobelspiesse. We also acknowledge the efforts of John Wilding at the PACE Science Data Segment for troubleshooting L1A data processing on HARP2 on-orbit data. We also acknowledge significant prelaunch calibration support from Julia Barsi, Nathan Kelley, Boryana Erfremova, Miguel Rodriguez, Nicholas Reed, and Brendan McAndrew at NASA Goddard Space Flight Center Radiometric Calibration Facility, in Greenbelt, MD, USA.https://www.spiedigitallibrary.org/conference-proceedings-of-spie/13192/131920H/In-flight-characterization-of-the-Hyper-Angular-Rainbow-Polarimeter-HARP2/10.1117/12.3033680.ful
Rubor: Reflections on Medicine from the Wasatch Front: 2019 (Issue 7)
No full textPostcard to My Dermatologist (Front Cover) - Phoebe Draper; On Being a Different Man p.4 - Luke Mirabelli; Triplets p.5 - Anne Vinsel; Holes p.6 - Stephen Mossbarger; Tree of Hippocrates p.7 - Michael Bishop; Balance p.8 - Kevin Rodriguez; Mourning\u27s Glory p.8 - Lindsey Wright; Team 1 p.9 - Lillian Boettcher; A Joke a Day p.10 - Christian Schmutz; Snoop p.12 - Ali Etman; Rules for Attending Withdrawing Care Conferences p.13 - Dannen Wright; The Gift p.14 - David K. Twitchell; Differential Diagnosis: Climate Change p.15 - Adam Kessel; "Worlds Apart" p.16 - Jorgen Madsen; PICU Rambling p.17 - Tyler Brown MD, Kajsa Vlasic; What\u27s Worse p.17 - Julie Kilpatrick; Bye Bye Baby: Mom\u27s Perspective p.17 - Anna Shvartsur; Who Heals the Healer? p.18 - Jenna Tiller; Mooring p.19 Hunter Wright; Step 1 p.19 Anonymous; To Astra in Clinic 6 p.20 - Dannen Wright; The Words We Use: Observations from Psych Rotation p.20 - Anna Shvartsur; Windows p.21 - Jordan Peacock; Hospital Tourism, Benjamin Drum p.22 - MD, PhD; Nirvana, Awais Riaz p.23 - MD, PhD; Of Patients and People p.24 - Ben Berger p.25 - Magpie Wisdom, Romany Redman, MD; NPO p.26 - Amy N. Cowan, MD; Author Biographies, p.28; Jack\u27s Mountain - Serena Fang (Back Cover
Contact damage of human dental enamel under cyclic axial loading with abrasive particles
No full text[EN] The damage to human dental enamel under cyclic, axial contacts in a silica particle medium is investigated. It is found that such damage is hierarchical, affecting different length-scales of the enamel structure. At the contact surface, it consists of micron-sized defects, with an attendant increase of surface roughness due to micro-indentation of the abrasive particles. Below the surface, demineralization of the enamel is observed, which is attributable to inelastic processes at the nanoscale. Axial-only contacts in particulate media result in negligible wear at the macroscopic scale, but may degrade the fracture strength. Potential implications of these results in the fields of dentistry and biology are discussed.The authors wish to thank Dr. Florencio Monje Gil for kindly providing tooth specimens from his clinic (CICOM, Centro de Implantologfa Cirugfa Oral y Maxilofacial, Badajoz, Spain). Fruitful discussions with Dr. Brian Lawn (National Institute of Standards and Technology, NIST, MD), Dr. Antonia Pajares (Universidad de Extremadura, Spain), Dr. Todora Ivanova Angelova (NTC; Universitat Politecnica de Valencia, Spain) and Dr. Paul Constantino (St. Michael's College, VT) are gratefully acknowledged. This study was supported by Junta de Extremadura, Spain, and FEDER/ERDF funds (grant IB16139 and GR18149). E. P. -C. gratefully acknowledges support from the Spanish Ministry of Economy and Competitiveness (MINECO) under grant FJCI-2015-27228.Sanchez-Gonzalez, E.; Pinilla-Cienfuegos, E.; Borrero-Lopez, O.; Rodriguez-Rojas, F.; Guiberteau, F. (2020). Contact damage of human dental enamel under cyclic axial loading with abrasive particles. Journal of the Mechanical Behavior of Biomedical Materials. 102. https://doi.org/10.1016/j.jmbbm.2019.103512S10
Not so social media: Twitter use in the conference sector
No full textThis research forms part of a larger project funded by Meeting Professionals International (MPI) focusing on the future of business events . In this paper we investigate the motivations for social media use within a professional event context. Twitter was tracked before during and after seven conferences and from this the top tweeters and organisers were identified. Fifteen interviews were conducted into both the organisational strategy and individual motivations for tweeting and were analysed alongside interviews with five social media experts. The research highlights several potential areas of conflict. Social media use tends to focus on broadcasting information rather than encouraging dialogue. People only tweet if they gain personal or individual professional value from doing so and event organisers need a deeper understanding of what that value is. Monitoring social media to gain customer insights and develop a more responsive customer service strategy is not yet happening although it is recognised as a necessity. The silent majority (passives) need to be better understood and catered for through social media use. Overall this sector, which successfully creates social interactions offline appears to be failing to do so online. A more strategic and resourced approach to social media is needed if its potential is to be achieved
The long-wavelength view of GG Tau A: rocks in the ring world
No full textWe present the first detection of GG Tau A at centimetre wavelengths, made with the Arcminute Microkelvin Imager Large Array at a frequency of 16 GHz (λ = 1.8 cm). The source is detected at >6 σrms with an integrated flux density of S16GHz = 249 ± 45 µJy. We use these new centimetre-wave data, in conjunction with additional measurements compiled from the literature, to investigate the long-wavelength tail of the dust emission from this unusual protoplanetary system. We use an MCMC-based method to determine maximum likelihood parameters for a simple parametric spectral model and consider the opacity and mass of the dust contributing to the microwave emission. We derive a dust mass of Md ~ 0.1 Msun, constrain the dimensions of the emitting region and find that the opacity index at λ > 7 mm is less than unity, implying a contribution to the dust population from grains exceeding ~4 cm in size. We suggest that this indicates coagulation within the GG Tau A system has proceeded to the point where dust grains have grown to the size of small rocks with dimensions of a few centimetres. Considering the relatively young age of the GG Tau association in combination with the low derived disc mass, we suggest that this system may provide a useful test case for rapid core accretion planet formation models
Trim17, novel E3 ubiquitin-ligase, initiates neuronal apoptosis
No full textAccumulating data indicate that the ubiquitin-proteasome system controls apoptosis by regulating the level and the function of key regulatory proteins. In this study, we identified Trim17, a member of the TRIM/RBCC protein family, as one of the critical E3 ubiquitin ligases involved in the control of neuronal apoptosis upstream of mitochondria. We show that expression of Trim17 is increased both at the mRNA and protein level in several in vitro models of transcription-dependent neuronal apoptosis. Expression of Trim17 is controlled by the PI3K/Akt/GSK3 pathway in cerebellar granule neurons (CGN). Moreover, the Trim17 protein is expressed in vivo, in apoptotic neurons that naturally die during post-natal cerebellar development. Overexpression of active Trim17 in primary CGN was sufficient to induce the intrinsic pathway of apoptosis in survival conditions. This pro-apoptotic effect was abolished in Bax(-/-) neurons and depended on the E3 activity of Trim17 conferred by its RING domain. Furthermore, knock-down of endogenous Trim17 and overexpression of dominant-negative mutants of Trim17 blocked trophic factor withdrawal-induced apoptosis both in CGN and in sympathetic neurons. Collectively, our data are the first to assign a cellular function to Trim17 by showing that its E3 activity is both necessary and sufficient for the initiation of neuronal apoptosis. Cell Death and Differentiation (2010) 17, 1928-1941; doi: 10.1038/cdd.2010.73; published online 18 June 201
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