1,721,294 research outputs found
The Double Access Reading and Complementiser Deletion in Italian
No full textIn this work we consider Sequence of Tense (henceforth SOT) phenomena in Italian and in particular the Double Access Reading (henceforth DAR). The main focus is on the morphosyntactic properties which determine this interpretation. We argue that the DAR doesn't depend on either the mood or the tense of the subordinate predicate, i.e., the present indicative, as is often assumed in the literature on the topic. Rather, it is determined by the semantic and syntactic properties of the matrix predicate. It will be shown that the DAR is strongly related to another phenomenon of Italian, namely, Complementiser Deletion (henceforth CD. See Giorgi & Pianesi (1996), (1997a)). The generalisation we will illustrate is the following: if a syntactic structure allows CD, it does not allow DAR, and vice versa. Adopting the split-C analysis of CD we developed in previous work, we will propose that the DAR depends on the kind of complementiser introducing the subordinate claus
Ruolo e uso dei vincoli di uguaglianza in problemi di ottimo con vincolo di disuguaglianza
No full text#iorestoacasa: un'analisi visuale del primo lockdown attraverso Instagram e TikTok
No full textThis article presents a qualitative analysis of audiovisual materials published on Instagram
and TikTok during the first national lockdown due to Covid-19 (March – May 2020) through
the hashtag #iorestoacasa. This represented a carrier for the circulation of pandemic-related
content produced by Italian users while experiencing unprecedented social and personal
limitations, and it aggregates a unique corpus of visual data depicting the cultural and so-
cial practices users engaged in during lockdown. The analysis reveals that #iorestoacasa
represents an interesting case of hybrid online sociality, whereby ephemeral exchanges
characterized by a focus of attention – typical of digital publics – combine with forms of
communitarian interaction, leading to what we define as a «contingent community»
DETERMINATION OF PHARMACEUTICALS’ RESIDUES IN WASTEWATER OBTAINED WITH AN OPTIMIZED LC-FTICR MS METHOD
No full textThe presence of pharmacologically active molecules or their derivatives found in wastewater is a problem of wide interest (1,2). Pharmaceutical compounds (PhCs) and their metabolites, even if present in the order of μg/L and ng/L, can affect the bioconcentration factor, and then be subject to bioaccumulation and biomagnification showing toxic effects for both flora and fauna and mankind.
The high resolution liquid chromatography mass spectrometry (LC-MS) coupled to tandem mass spectrometry MS/MS has gained popularity in recent decades thanks to its versatility, specificity and selectivity, finding application as the preferred method for the analysis of PhCs in complex matrices such as waste and/or discharge water. (3,4)
Most methods developed in the past have focused on specific therapeutic classes, such as antibiotics for their potential resistance to biotic degradation.
In this work we focus on the development of an analytical multi-residual method by using LC-FT/ICR-MS and IRMPD for a particular class of pharmaceuticals chosen according to the 10 mostly diffused and consumed products in the Mediterranean area (4-8).
A solid phase extraction from spiked tap water followed by LC-FTICR MS determination has been proposed for the simultaneous analysis of these pharmaceuticals as in Figure 1: (peak 1) metformin hydrochloride (exact m/z 130.10872), (peak 2) amoxicillin (exact m/z 366.11182), (peak 3) caffeine (exact m/z 195.08765), (peak 4) erythromycin (exact m/z 734.46852), (peak 5) clarithromycin (exact m/z 748.48417), (peak 6) carbamazepine (exact m/z 237.10224), (peak 7) naproxen (exact m/z 231.10157), (peak 8) diclofenac sodium (exact m/z 294.00941), (peak 9) ibuprofen (exact m/z 205.12340), (10) aspirin (exact m/z 181.04954). In order to ascertain the identity of all chromatographic peaks, the measurements and interpretation of IRMPD-FTICR data was accomplished. All precursor ions were photon irradiated for 200 ms at 100% laser power by a 20 W continuous CO2 laser source at a wavelength of 10.6 μm.
The method optimized was applied to samples collected from influent and effluent from a Wastewater Treatment Plants (WWTP) in order to assess the efficiency of the plant for removing this kind of recalcitrant compounds. Among the PhCs considered in this study, only carbamazepine and clarithromycin were found in the effluent of the WWTP
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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