Observation in the MINOS far detector of the shadowing of cosmic rays by the sun and moon

The shadowing of cosmic ray primaries by the moon and sun was observed by the MINOS far detector at a depth of 2070 mwe using 83.54 million cosmic ray muons accumulated over 1857.91 live-days. The shadow of the moon was detected at the 5.6 sigma level and the shadow of the sun at the 3.8 sigma level using a log-likelihood search in celestial coordinates. The moon shadow was used to quantify the absolute astrophysical pointing of the detector to be 0.17 +/- 0.12 degrees. Hints of interplanetary magnetic field effects were observed in both the sun and moon shadow. Published by Elsevier B.V.

Shadowing: imitazione e apprendimento. Dagli Interpreting Studies alle neuroscienze

Scopo di questa tesi è argomentare l’utilità dello shadowing nella formazione degli interpreti, basandosi sulla Teoria motoria della percezione del linguaggio di Alvin Liberman e muovendosi all’interno del quadro teorico della più ampia embodied cognition, che include teorie sullo sviluppo del linguaggio e sull’acquisizione di seconde lingue. Nella formazione degli interpreti, lo shadowing è un esercizio che consiste nell’immediata ripetizione di quanto udito in cuffia, parola per parola e nella medesima lingua del testo di partenza ed è generalmente utilizzato come esercizio propedeutico alla simultanea, in quanto permette sia di “imparare” ad ascoltare e a parlare contemporaneamente, sia di migliorare la pronuncia e la fluidità in lingua straniera. Tuttavia, all’interno degli Interpreting Studies, ci sono studiosi che lo ritengono un esercizio inutile e, per certi versi, pericoloso poiché porrebbe l’accento su un processo eccessivamente “meccanico” dell’interpretazione. Per argomentare la sua utilità nella didattica dell’interpretazione, in questa tesi, dopo aver presentato le principali teorie sullo sviluppo del linguaggio e sull’acquisizione di seconde lingue, si passeranno in rassegna i risultati di ricerche condotte non solo all’interno degli Interpreting Studies, ma anche nella più ampia prospettiva della didattica delle lingue straniere/seconde, e soprattutto in neurolinguistica e psicologia cognitiva, dove lo shadowing è utilizzato per analizzare i processi cognitivi che sono alla base della ricezione e produzione del linguaggio (articolazione motoria, memoria di lavoro, attenzione selettiva, ecc.). L’ultimo capitolo di questo lavoro sarà dedicato alla descrizione di un approccio estremamente recente sulla percezione e sulla produzione del linguaggio, che coniuga la Teoria motoria della percezione del linguaggio di Liberman (1967) con la recente scoperta dei neuroni specchio, e che getta una luce nuova sull’utilità dello shadowing nella formazione degli interpreti.

Job-shadowing: Swiss health librarians observing experienced search specialists and information skills trainers in London

Abstract As librarians of the Social & Preventive Medicine Library in Bern, we help researchers perform systematic literature searches and teach students to use medical databases. We developed our skills mainly “on the job”, and we wondered how other health librarians in Europe were trained to become experts in searching. We had a great opportunity to “job shadow” specialists in this area of library service during a 5-day-internship at the Royal Free Hospital Medical Library in London, Great Britain.

Methodology for estimating building integrated photovoltaics electricity production under shadowing conditions and case study

Building integrated photovoltaic (BIPV) systems are a relevant application of photovoltaics. In countries belonging to the International Energy Agency countries, 24% of total installed PV power corresponds to BIPV systems. Electricity losses caused by shadows over the PV generator have a significant impact on the performance of BIPV systems, being the major source of electricity losses. This paper presents a methodology to estimate electricity produced by BIPV systems which incorporates a model for shading losses. The proposed methodology has been validated on a one year study with real data from two similar PV systems placed on the south façade of a building belonging to the Technical University of Madrid. This study has covered all weather conditions: clear, partially overcast and fully overcast sky. Results of this study are shown at different time scales, resulting that the errors committed by the best performing model are below 1% and 3% in annual and daily electricity estimation. The use of models which account for the reduced performance at low irradiance levels also improves the estimation of generated electricity.

The Book of Joshua, shadowing forth the fulness of Christian blessing in Christ.

Mode of access: Internet.

The camera; or, Art of drawing in water colours : with instructions for sketching form nature : comprising the whole process of water-coloured drawing, familiarly exmplified in drawing, shadowing, and tinting a complete landscape ... and directions for compounding and using colours, sepia, Indian ink, bister, &c.

Mode of access: Internet.

Arts companion, or A new assistant for the ingenious, in 3 pts. Pt. 1 containing the art of drawing in perspective ... Pt. II containing the art of drawing and painting in water-colours ... Pt. III containing the art of painting in miniature ... to which are added directions for shadowing, stipling, &c. ... likewise the preparation of an excellent polish and shell: the whole taken from some of the best Italian and other masters.

Includes indexes.

Shadowing experiences and the extension of communities of practice: A case study of women education managers

Recent developments in workplace learning have focused on relational and social network views of learning that introduce practitioners to the norms, values and assumptions of the workplace as well as the learning processes through which knowledge is acquired. This article reports on a qualitative study of a mentoring programme designed to assist women education managers gain promotion by broadening their networks and stimulating insights into the senior management positions for which they were being prepared. The findings are that members reflexively assess and reassess goals and values to demystify knowledge and resolved cognitive dissonance in these processes. Moreover, this article shows that women participants learn from the networks, and that the networks learn from the participant in a reciprocal and informal way. The article concludes that organizational learning programmes must focus on enabling such networks to flourish.

Microlithiasis of the gallbladder: role of endoscopic ultrasonography in patients with idiopathic acute pancreatitis

OBJECTIVES: Causes may be found in most cases of acute pancreatitis, however no etiology is found by clinical, biological and imaging investigations in 30% of these cases. Our objective was to evaluate results from endoscopic ultrasonography (EUS) for diagnosis of gallbladder microlithiasis in patients with unexplained (idiopathic) acute pancreatitis. METHODS: Thirty-six consecutive non-alcoholic patients with diagnoses of acute pancreatitis were studied over a five-year period. None of them showed signs of gallstones on transabdominal ultrasound or tomography. We performed EUS within one week of diagnosing acute pancreatitis. Diagnosis of gallbladder microlithiasis on EUS was based upon findings of hyperechoic signals of 0.5-3.0 mm, with or without acoustic shadowing. All patients (36 cases) underwent cholecystectomy, in accordance with indication from the attending physician or based upon EUS diagnosis. RESULTS: Twenty-seven patients (75%) had microlithiasis confirmed by histology and nine did not (25%). EUS findings were positive in twenty-five. Two patients had acute cholecystitis diagnosed at EUS that was confirmed by surgical and histological findings. In two patients, EUS showed cholesterolosis and pathological analysis disclosed stones not detected by EUS. EUS diagnosed microlithiasis in four cases not confirmed by surgical treatment. In our study, sensitivity, specificity and positive and negative predictive values to identify gallbladder microlithiasis (with 95% confidence interval) were 92.6% (74.2-98.7%), 55.6% (22.7-84.7%), 86.2% (67.4-95.5%) and 71.4% (30.3-94.9%), respectively. Overall EUS accuracy was 83.2%. CONCLUSIONS: EUS is a very reliable procedure to diagnose gallbladder microlithiasis and should be used for the management of patients with unexplained acute pancreatitis. This procedure should be part of advanced endoscopic evaluation.

Nuclear incoherent photoproduction of pi(0) and eta from 4 to 12 GeV

The mechanism of incoherent pi(0) and eta photoproduction from complex nuclei is investigated from 4 to 12 GeV with an extended version of the multicollisional Monte Carlo (MCMC) intranuclear cascade model. The calculations take into account the elementary photoproduction amplitudes via a Regge model and the nuclear effects of photon shadowing, Pauli blocking, and meson-nucleus final-state interactions. The results for pi(0) photoproduction reproduced for the first time the magnitude and energy dependence of the measured rations sigma(gamma A)/sigma(gamma N) for several nuclei (Be, C, Al, Cu, Ag, and Pb) from a Cornell experiment. The results for eta photoproduction fitted the inelastic background in Cornell's yields remarkably well, which is clearly not isotropic as previously considered in Cornell's analysis. With this constraint for the background, the eta -> gamma gamma. decay width was extracted using the Primakoff method, combining Be and Cu data [Gamma(eta ->gamma gamma) = 0.476(62) keV] and using Be data only [Gamma(eta ->gamma gamma) = 0.512(90) keV]; where the errors are only statistical. These results are in sharp contrast (similar to 50-60%) with the value reported by the Cornell group [Gamma(eta ->gamma gamma). = 0.324(46) keV] and in line with the Particle Data Group average of 0.510(26) keV.

Heavy quark production in deep inelastic electron-nucleus scattering

Heavy quark production has been very well studied over the last years both theoretically and experimentally. Theory has been used to study heavy quark production in ep collisions at HERA, in pp collisions at Tevatron and RHIC, in pA and dA collisions at RHIC, and in AA collisions at CERN-SPS and RHIC. However, to the best of our knowledge, heavy quark production in eA has received almost no attention. With the possible construction of a high energy electron-ion collider, updated estimates of heavy quark production are needed. We address the subject from the perspective of saturation physics and compute the heavy quark production cross section with the dipole model. We isolate shadowing and nonlinear effects, showing their impact on the charm structure function and on the transverse momentum spectrum.