76 research outputs found
âTea for twoâ: the Archive of the Italian Latinity of the Middle Ages Meets the CLARIN Infrastructure
This paper aims at showing how integrating the Archive of the Italian Latinity of the Middle Ages(ALIM) into the ILC4CLARIN repository can provide mutual benefits. Making ALIM availableto a large community of scholars and researchers, on the one side, represents the first step to reduce the lack of resources for Medieval Latin in CLARIN and, on the other side, constitutesan unprecedented contribution to not only linguistic investigations, but also to the studies ofthe culture and science at the basis of the Western European society. The paper describes theadopted approach aiming to keep intact the structure of the archive and its metadata, which areboth accurately mirrored into the ILC4CLARIN repository in order to maintain existing accesspractices of the users. This structure can be found in exactly the same state within the CLARIN VLO. Finally, the paper illustrates the advantages of experimenting with some ALIM data, once introduced within the CLARIN Language Resource Switchboard service: first results are shown from the analysis of some texts with the UDPipe tool suite and the distant reading tool Voyant
A kinematic study of planetary nebulae in the dwarf irregular galaxy IC10
We present positions, kinematics, and the planetary nebula luminosity
function (PNLF) for 35 planetary nebulae (PNe) in the nearest starburst galaxy
IC10 extending out to 3kpc from the galaxy's centre. We take advantage of the
deep imaging and spectroscopic capabilities provided by the spectrograph FOCAS
on the 8.2m Subaru telescope. The PN velocities were measured through the
slitless-spectroscopy technique, which allows us to explore the kinematics of
IC10 with high precision. Using these velocities, we conclude that there is a
kinematic connection between the HI envelope located around IC10 and the
galaxy's PN population. By assuming that the PNe in the central regions and in
the outskirts have similar ages, our results put strong observational
constraints on the past tidal interactions in the Local Group. This is so
because by dating the PN central stars, we, therefore, infer the epoch of a
major episode of star formation likely linked to the first encounter of the HI
extended envelope with the galaxy. Our deep [OIII] images also allow us to use
the PNLF to estimate a distance modulus of 24.1+/-0.25, which is in agreement
with recent results in the literature based on other techniques.Comment: 10 pages, 9 figures, 2 tables. Accepted for publication in MNRA
The colours of BL Lac objects: a new approach to their classification
We selected a sample of 437 BL Lac objects, taken from the RomaBZCat
catalogue, for which spectroscopic information and SDSS photometry is
available. We propose a new classification of BL Lacs in which the sources'
type is not defined only on the basis of the peak frequency of the synchrotron
component in their Spectral Energy Distribution (types L and H), but also on
the relevance of this component with respect to the brightness of the host
galaxy (types N and G, for nuclear or galaxy dominated sources). We found that
the SDSS colour index u-r=1.4 is a good separator between these two types. We
used multiband colour-colour plots to study the properties of the BL Lac
classes and found that in the X-ray to radio flux ratio vs u-r plot most of the
N (blue) sources are located in a rather narrow strip, while the G-sources
(red) are spread in a large area, and most of them are located in galaxy
clusters or interacting systems, suggesting that their X-ray emission is not
from a genuine BL Lac nucleus but it is related to their environment. Of the
about 135 sources detected in the gamma-rays by Fermi-GST, nearly all belong to
the N-type, indicating that only this type of sources should be considered as
genuine BL Lac nuclei. The J-H, H-K plot of sources detected in the 2MASS
catalogue is consistent with that of the "bona fide" BL Lac objects,
independently of their N or G classification from the optical indices,
indicating the existence in G-type sources of a K-band excess possibly due to a
steep, low frequency peaked emission which deserves further investigations. We
propose to use these colour plots as a further tool for searching candidate
counterparts of newly discovered high-energy sources.Comment: 11 pages, 7 figures. Submitted 29/08/2011 to MNRAS, first referee
report received 31/10/2011, accepted 21/02/201
Cancer incidence in Italian contaminated sites
Introduction. The incidence of cancer among residents in sites contaminated by pollutants with a possible health impact is not adequately studied. In Italy, SENTIERI Project (Epidemiological study of residents in National Priority Contaminated Sites, NPCSs) was implemented to study major health outcomes for residents in 44 NPCSs.Methods. The Italian Association of Cancer Registries (AIRTUM) records cancer incidence in 23 NPCSs. For each NPCSs, the incidence of all malignant cancers combined and 35 cancer sites (coded according to ICD-10), was analysed (1996-2005). The observed cases were compared to the expected based on age (5-year period,18 classes), gender, calendar period (1996-2000; 2001-2005), geographical area (North-Centre and Centre-South) and cancer sites specific rates. Standardized Incidence Ratios (SIR) with 90% Confidence Intervals were computed.Results. In both genders an excess was observed for overall cancer incidence (9% in men and 7% in women) as well as for specific cancer sites (colon and rectum, liver, gallbladder, pancreas, lung, skin melanoma, bladder and Non Hodgkin lymphoma). Deficits were observed for gastric cancer in both genders, chronic lymphoid leukemia (men), malignant thyroid neoplasms, corpus uteri and connective and soft-tissue tumours and sarcomas (women).Discussion. This report is, to our knowledge, the first one on cancer risk of residents in NPCSs. The study, although not aiming to estimate the cancer burden attributable to the environment as compared to occupation or life-style, supports the credibility of an etiologic role of environmental exposures in contaminated sites. Ongoing analyses focus on the interpretation of risk factors for excesses of specific cancer types overall and in specific NPCSs in relation to the presence of carcinogenic pollutants.
Group, field and isolated early-type galaxies I. Observations and nuclear data
This is the first paper of a series on the investigation of stellar
population properties and galaxy evolution of an observationally homogeneous
sample of early-type galaxies in groups, field and isolated galaxies. We
present high S/N long-slit spectroscopy of 86 nearby elliptical and S0
galaxies. 8 of them are isolated, selected according to a rigorous criterion.
This survey has the advantage of covering a larger wavelength range than
normally found in the literature, including [OIII]5007 and Halpha, both
important for emission correction. Among the 86 galaxies with S/N>15 (per
resolution element, for r_e/8 central aperture), 57 have their Hbeta-index
corrected for emission, average correction is 0.190A in Hbeta; 42 galaxies
reveal [OIII]5007 emission, of which 16 also show obvious Halpha emission. Most
of the galaxies in the sample do not show obvious signs of disturbances nor
tidal features in the morphologies, although 11 belong to the Arp catalogue of
peculiar galaxies; only 3 of them (NGC750, NGC751, NGC3226) seem to be strongly
interacting. We present the measurement of 25 central line-strength indices
calibrated to the Lick/IDS system. Kinematic information is obtained for the
sample. We analyse the line-strength index vs velocity dispersion relations for
our sample of mainly low density environment galaxies, and compare the slope of
the relations with cluster galaxies from the literature. Our main findings are
that the index-sigma_0 relations presented for low-density regions are not
significantly different from those of cluster E/S0s. The slope of the
index-sigma_0 relations does not seem to change for early-type galaxies of
different environmental densities, but the scatter of the relations seems
larger for group, field and isolated galaxies than for cluster galaxies.Comment: Accepted for publication in the MNRA
Voci germaniche nel medioevo latino
Il contributo prende in esame alcuni aspetti delle interferenze linguistiche e culturali tra latinitĂ italiana medievale e tradizione germanica, focalizzando lâattenzione sulle Leges Langobardorum e, in particolare, sullâEditto
di Rotari, di cui si presenta brevemente il progetto di una nuova edizione
Verso un'edizione digitale dell'Editto di Rotari
Il progetto editoriale che viene per la prima volta presentato in questo saggio nasce da una collaborazione tra le UnitĂ di ricerca di un Programma di Rilevante Interesse Nazionale (PRIN-2012) in cui operano congiuntamente i due autori del presente saggio, e si suddivide in due fasi.
La prima fase Ăš volta a fornire unâedizione diplomatico-interpretativa dei testimoni âpiemontesiâ dellâEditto di Rotari (dâora in poi ER), ovvero: Vercelli, Biblioteca Capitolare Eusebiana, CLXXXVIII (ms 2) e Ivrea, Biblioteca Capitolare, XXXIV (ms 3). I testi criticamente definiti confluiranno nellâArchivio della LatinitĂ Italiana del Medioevo e le immagini verranno visualizzate tramite un software specifico, denominato EVT (Edition Visualization Technology), che sarĂ presentato nella sez. 11.
La seconda fase, piĂč a lungo termine, prevede lâallestimento dellâedizione critica del testo dellâEditto sulla base della collazione e recensione completa dei testimoni pervenuti, della cui necessitĂ si argomenterĂ nella sez. 5
Il lessico longobardo delle migrazioni tra storia e leggenda
Prendendo in esame la terminologia longobarda relativa al campo semantico delle migrazioni e contestualizzandola dal punto di vista linguistico, storico e culturale, gli autori intendono innanzitutto ripercorrere lo âstory tellingâ delle etnogenesi plurime dei Longobardi, alla luce sia delle fonti medievali (in particolare le Leges Langobardorum, ma anche lâOrigo gentis Langobardorum, la Historia gentis Langobardorum e la documentazione epigrafica), sia della rivisitazione del concetto di Völkerwanderung che ha caratterizzato la ricerca storica dellâultimo decennio. Si studieranno, inoltre, i termini con cui i Longobardi stessi definiscono il âmigranteâ, nonchĂ© i concetti di âasiloâ e ârifugioâ con le loro implicazioni giuridiche e politiche.
I termini longobardi analizzati nell'articolo, nonchĂ© â ove presenti â le relative glosse latine, saranno inclusi in un glossario digitale che costituirĂ parte integrante del progetto di edizione delle Leges attualmente in corso ad opera degli autori e che permetterĂ di mettere a sistema le informazioni ortografiche, linguistiche e culturali riferibili a ciascun lemma
La filologia germanica e il paradigma digitale: modelli, metodi e strumenti per i testi germanici medievali. Germanic Philology and the Digital Paradigm: Models, Methods and Tools for Medieval Germanic Texts
Collection of multi-authored essays on the digital treatment of Germanic Lexicography, Linguistics, Manuscripts, Textual-Critical Method
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