86 research outputs found
Expressing epistemic stance in University lectures and TED talks: a contrastive corpu-based analysis
No full textAbstract – This study explores the web-mediated genre of TED (Technology, Entertainment, Design) talks, speech events whereby experts in their field disseminate knowledge from different domains (e.g. science, technology, design, global issues) addressing an audience of both co-present participants and web-users all over the world. The aim of this study is to investigate the way academics convey epistemic stance (Conrad, Biber 2000) and build up their image as experts on the TED stage. To this purpose, a contrastive analysis was carried out comparing two corpora of spoken discourse, i.e. a corpus of TED talks and a corpus of MICASE university lectures from different disciplines. Although in both genres the speaker is an academic, both the communicative purpose and audience expectations differ substantially in the two contexts under scrutiny. This comparison highlights some distinguishing traits of TED talks and provides a better insight into this genre. Adopting a corpus-based approach, attention is first paid to the most recurrent epistemic lexical verbs (ELVs) and to the use of first and second person pronouns in the two corpora. The qualitative analysis then focuses on similarities and differences in the discourse functions of the four most frequent ELVs (see, show, know, think) and of their clusters when they combine with first and second person pronouns in the two corpora. Previous studies in the field of English for Academic Purposes (Rounds 1987; Fortanet 2004; Walsh 2004; Artiga León 2006; Bamford 2009) are referred to as a starting point to investigate a novel, unexplored pragmatic space (i.e. that of TED) wherein academics accomplish purposes other than merely disseminating knowledge and training students, such as promoting their research and building up their image as experts.
Abstract – I generi mediati dalla rete svolgono un ruolo fondamentale nei processi di ricontestualizzazione e riconcettualizzazione del sapere specialistico. Oltre a riadattare i contenuti per un pubblico di non addetti ai lavori, attraverso i nuovi mezzi di comunicazione gli esperti hanno la possibilità di rimodellare la propria immagine in base ai propri scopi comunicativi. Questo articolo si incentra sui TED talk, interventi a convegno (TED conferences) trasmessi in tutto il mondo attraverso la rete in cui esperti di diverse discipline conferiscono su vari temi (ad es. scienza, tecnologia, architettura, questioni globali). I TED talk condividono molte caratteristiche con una serie di generi ‘satellite’, come i documentari, le presentazioni accademiche, gli articoli scientifici e le lezioni universitarie. Queste ultime rappresentano probabilmente il genere che maggiormente si avvicina ai TED talk. Sia nelle lezioni universitarie sia nei TED talk, infatti, l’esperto si rivolge ad un pubblico di non esperti (o semi-esperti) avvalendosi di varie modalità semiotiche (ad es. parlato, supporti audio, supporti visivi) in quello che si rivela essere un evento comunicativo essenzialmente monologico. Prestando particolare attenzione a un processo di ricontestualizzazione del discorso accademico, questo contributo si propone di analizzare se e fino a che punto il discorso accademico subisce un cambiamento nel momento in cui il parlante si sposta dall’aula universitaria al palco di TED. Questo studio si basa su un’analisi contrastiva: un corpus di TED talk tenuti da accademici viene messo a confronto con un corpus di lezioni universitarie ricavato dal Michigan Corpus of Academic Spoken English (MICASE). Per osservare differenze e analogie fra i due generi ci si avvale di un’analisi sia quantitativa sia qualitativa
Metodi per la verifica di colonne composte acciaio‐calcestruzzo “concrete filled” soggette ad incendio
No full textCRITICAL ISSUES IN THE EARLY DISCHARGE OF THE NEWBORN
No full textEarly discharge (ED) of healthy “late preterm” and full term newborn infants has become a common practice because of current social and economic necessities. The average length of stay of mothers and infants after delivery shortened steadily from 1970 until the mid-1990s and in 1995, the American Academy of Pediatrics (AAP) defined early and very early discharge as stays of 48 and 24 hours, respectively, after uncomplicated vaginal delivery. The length of stay (LOS) of a child after birth has been a controversial topic over the past few decades. A Cochrane Review in 2002 found that early postnatal discharge showed no adverse effects on breastfeeding and maternal depression when accompanied by a policy of nursing/midwifery home visits. Even if this practice has become more and more widespread, there was an increased rate of early post discharge readmission for jaundice, feeding problems, excessive weight loss (WL), dehydration and hypernatremia. For this reason, it is recommended that early discharged neonates should be evaluated shortly after discharge. Our aim was to review the available data about the safety of ED as regards to the most common problems causing hospital readmission
Effective and equivalent organ doses in patients undergoing coronary angiography and percutaneous coronary interventions
No full textPurpose: Recent recommendations of the International Commission on Radiological Protection state that the use of effective dose (E) for assessing patient exposure has severe limitations, though it can be kept for dose comparisons. In cardiology procedures, the equivalent dose (HT) is one of the most appropriate dose quantity to be evaluated for risk-benefit assessment. In this study, both E and HTvalues for ten critical organs in coronary angiography (CA) and percutaneous coronary interventions (PCI) were derived from in-the-field dose-area-product (DAP) measurements in order to provide a database for doses in those procedures. Methods: Conversion factors E/DAP calculated by Monte Carlo methods in two different mathematical human phantoms were applied to DAP values measured on 193 patients (118 CA and 75 PCI). Partial DAP values were recorded in-the-field for each projection and for all patients. The partial effective doses of all projections were summed up to calculate the E of the entire procedure. Similarly, equivalent doses for ten critical organs/tissues (bone, colon, heart, liver, lung, esophagus, red bone marrow, skin, stomach, and thyroid) were derived from HT/DAP conversion factors for different projections calculated by Monte Carlo method. Results: All parameters related to the patient dose, i.e., fluoroscopy times, number of images, DAP, effective doses, and equivalent doses, show a wide range of values depending on the complexity of the patient case and the experience of the cardiologist. The mean fluoroscopy time, DAP, and E values for coronary angiography patients were approximately threefold lower than those for PCI patients; the number of images for CA was half that for PCI. The correlation between effective dose and DAP was excellent for both CA and PCI. The equivalent doses values were in good correlations with DAP values in CA examinations, with Pearson's coefficients ranging from 0.87 (stomach) to 0.99 (skin) and rmean=0.94. The same analysis was performed for PCI procedures. In this case, the trends were only slightly worse because " r " ranged from 0.70 (stomach) to 0.92 (bone) and rmean=0.85. Simple conversion coefficients to estimate equivalent doses to ten critical organs/tissues from DAP values, for both CA and PCI, were provided for avoiding the need to carry out detailed in-the-field analysis for all projections and for all patients. Conclusions: Measurements in-the-field of DAP values were carried out for two common cardiology procedures and effective doses were derived for each technique from detailed analysis of dose and projection data, using conversion factors provided by two different theoretical models. Equivalent doses to organs/tissues were also calculated using conversion factors proposed in the literature for different projections and cumulative conversion factors HT/DAP for ten organs/tissues were estimated. © 2011 American Association of Physicists in Medicine
Gli scrittori sulla stampa quotidiana e periodica in Campania nel Novecento
No full textIl presente progetto di ricerca, che mira alla pubblicazione di uno studio sul rapporto tra intellettuali e stampa in Campania nel Novecento, prevede un duplice svolgimento: 1) ricostruirà la collaborazione di alcuni protagonisti della scena culturale nazionale (Ungaretti, Sinisgalli, Rea, Compagnone, Bernari, ecc.) ad alcuni giornali campani ("Il Mattino" ed altri); 2) indagherà le vicende di alcune riviste letterarie campane maggiormente significative ("La Diana", "Aretusa", "Altri termnini", "Le ragioni narrative", "Uomini e idee", ecc.), rintracciando in esse dibattiti, poetiche, ideologie, polemiche. Il progetto nasce dalla convinzione che una ricerca sulla cultura letteraria in Campania nel Novecento non può che transitare anche per il medio della stampa quotidiana e periodica. Tale stampa, infatti, ha per tutto il Novecento ospitato autori, napoletani e non, di rilievo nazionale e internazionale, i quali hanno affidato ad essa talvolta momenti molto significativi della loro riflessione sulla letteratura e sull'attualità e campioni rilevanti della loro invenzione poetica o narrativa
NMR Assignment of N-(1-adamantyl)-1-pentyl-1H-indazole-3-carboxamide Seized as Herbal Incense for the First Time in Italy
No full textThe synthetic cannabinoid, N-(1-adamantyl)-1-pentyl-1H-indazole-3-carboxamide, known also as AKB48 and/or APINACA, has been detected for the first time in herbal incense seized in Italy. Its structural characterization has been performed through gas chromatography-mass spectrometry (GC-MS) and high-resolution nuclear magnetic resonance (NMR) analysis. In order to favor an easier and faster identification of AKB48 in future investigations, NMR assignments in deuterated methanol and chloroform is also reported
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