763 research outputs found

    An ERP study of low and high relevance semantic features

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    It is believed that the N400 elicited by concepts belonging to Living is larger than N400 to Non-living. This is considered as evidence that concepts are organized, in the brain, on the basis of categories. We conducted a feature-verification experiment where Living and Non-living concepts were matched for relevance of semantic features. Relevance is a measure of the contribution of semantic features to the “core” meaning of a concept. We found that when relevance is low the N400 is large. In addition, we found that when the two categories of Living and Non-living are equated for relevance the seemingly category effect at behavioral and neural level disappeared. In sum, N400 is sensitive, rather than to categories, to semantic features, thus showing that previously reported effects of semantic categories may arise as a consequence of the differing relevance of concepts belonging to Living and Non-living categories

    FEATURE TYPE EFFECTS IN SEMANTIC MEMORY: AN EVENT RELATED POTENTIALS STUDY

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    It is believed that the N400 elicited by concepts belonging to Living is larger than N400 to Objects. This is considered as evidence that concepts are organized, in the brain, on the basis of categories. Similarly, differential N400 to sensory and non-sensory semantic features was taken as evidence for a neural organisation of conceptual memory based on semantic features. We conducted a feature-verification experiment where Living and Non-Living concepts are described by sensory and non-sensory features were matched for age-of-acquisition, typicality and familiarity and for relevance of semantic features. Relevance is a measure of the contribution of semantic features to the “core” meaning of a concept. We found that when Relevance is low then N400 is larger. In addition, we found that when the two categories of Living and Non-Living concepts are matched for relevance the seemingly category effect at the neural level disappeared. Also no difference between sensory and non-sensory descriptions was detected when relevance was matched. In sum, N400 does not differ between categories or feature types. Previously reported effects of semantic categories and feature type may have arisen as a consequence of the differing Relevance of concepts belonging to Living and Non-Living categories

    Statistical Properties of DLAs and sub-DLAs

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    Quasar absorbers provide a powerful observational tool with which to probe both galaxies and the intergalactic medium up to high redshift. We present a study of the evolution of the column density distribution, f(N,z), and total neutral hydrogen mass in high-column density quasar absorbers using data from a recent high-redshift survey for damped Lyman-alpha (DLA) and Lyman limit system (LLS) absorbers. Whilst in the redshift range 2 to 3.5, ~90% of the neutral HI mass is in DLAs, we find that at z>3.5 this fraction drops to only 55% and that the remaining 'missing' mass fraction of the neutral gas lies in sub-DLAs with N(HI) 10^{19} - 2 * 10^{20} cm^{-2}.Comment: 6 pages, 4 figures, in "Chemical Enrichment of Intracluster and Intergalactic medium", Proceedings of the Vulcano Workshop, May 14-18, 200

    L'ARBITRATO INTERNAZIONALE. LA QUESTIONE DELLA LEGGE APPLICABILE.

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    la tesi tratta dell'arbitrato internazionale, partendo dall'analisi delle varie definizioni presenti nelle Convenzioni Internazionali e analizzando il procedimento arbitrale in questione si passa alla trattazione della questione relativa alla legge applicabile a tale tipo di arbitrato; sia a livello procedurale che a livello sostanziale

    L\u27Esposizione Internazionale Femminile di Belle Arti (Torino, 1910-1911; 1913). Note su genere, arte e professione in Italia all\u27inizio del XX secolo

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    Il contributo intende ricostruire la vicenda delle Esposizioni Internazionali Femminili di Belle Arti (1910-11; 1913), prima manifestazione artistica di taglio internazionale riservata esclusivamente alle donne organizzata in Italia. Promosse a Torino dalla rivista La Donna, le due rassegne si svolsero in un momento storicamente determinante per l\u27affermazione di un nuovo status delle artiste, contribuendo a dare visibilitĂ  e legittimitĂ  al fenomeno della produzione artistica femminile. La ricerca ripercorre, sulla scorta soprattutto di documenti d\u27epoca e fonti d\u27archivio, la storia e gli esiti di questa innovativa esperienza, evidenziando la complessitĂ  delle reti istituzionali, sociali, di patronage e matronage che concorsero alla sua genesi e al suo successo

    Nuove tecnologie per garantire il benessere fisico: strategie didattiche e motivazionali

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    The introductory part of this paper will discuss the importance of the use of new technologies, analysing their typologies and benefits, in the context of prevention and treatment of chronic and degenerative diseases, with the aim of guaranteeing physical well-being and the consequent improvement of the quality of life in modern society. In the second section, the contribution, using a narrative theoretical method, will deal with the methodologies applied in the pursuit of the  aforementioned aim. In the final section, the benefits found in the population will be highlighted, underlining how the linkbetween new technologies and physical well-being will make them inextricably complementary in the future.La parte introduttiva di questo contributo discuterĂ  l’importanza dell’utilizzo delle nuove tecnologie, analizzandone le tipologie e i benefici, nell’ambito della prevenzione e cura delle malattie croniche e degenerative, con l’obiettivo di garantire il benessere fisico e il conseguente miglioramento della la qualitĂ  della vita nella societĂ  moderna. Nella seconda sezione, il contributo,utilizzando un metodo teorico narrativo, tratterĂ  le metodologie applicate nel perseguimento del suddetto obiettivo. Nella sezione finale verranno evidenziati i benefici riscontrati nella popolazione, sottolineando come il legame tra le nuove tecnologie e il benessere fisico le renderĂ  indissolubilmente complementari in futuro

    An integrated participative spatial decision support system for smart energy urban scenarios: A financial and economic approach

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    The decision-making about heating supply system options in an urban perspective is extremely challenging. Nowadays, this type of evaluation is not only a technical and economic issue, but also a political and environmental choice. Aware of this widening of the problem, recent approaches propose to combine financial evaluations (DCF, CBA, ROI, energy budget costs –VEDI SITO ENTRANZE VEDI CORGNATI VEDI INGARAMO)
with Multicriteria Decision Analyses (MCDA), able to consider quantitative and qualitative aspects. However, there is another specific feature of the problem that is rarely considered: the territorial dimension. In fact, it is possible to notice that few Spatial Decision Support System (SDSS) have been currently developed in this realm. The paper aims to present a new method finalised to support urban energy decisions in real-time processes, developed in the context of a European project (DIMMER). The method is composed by three parts: i) a new Web-based Spatial Decision Support System (SDSS), called “Dashboard”; ii) an Energy-Attribute Analysis (EEA) develop ad hoc to be integrated in the Dashboard; iii) a MCDA. Differently from other SDSS, one of the main strengths of the Dashboard is the ability of acquiring, storing and managing geo-referenced as well as non geo-referenced data performing real-time analyses of spatial problems taking into account a wide range of information. In this sense, the Dashboard can formally visualize and assess a potentially infinite number of attributes and information being able to read and process enormous web-databases. This character makes the Dashboard a very effective tool that can be used in real-time during focus groups or workshops to understand how the criterion trade-offs evolve when one or several decision parameters change. The paper describes the main procedure of the new method and the Dashboard’s test according to a district in Turin (Italy)

    INTRODUCING CORE-SHELL TECHNOLOGY FOR CONFORMANCE CONTROL

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    Reservoir heterogeneities can severely affect the effectiveness of waterflooding because displacing fluids tend to flow along high-permeability paths and prematurely breakthrough at producing wells. A Proof-of-Concept (PoC) study is presented while discussing the experimental results of a research on "core-shell" technology to improve waterflooding in heterogeneous oil reservoirs. The proposed methodology consists in injecting a water dispersion of nanocapsules after the reservoir has been extensively flushed with water. The nanocapsules are made of a "core" (either polymeric or siliceous materials), protected by a "shell" that can release its content at an appropriate time, which activates through gelation or aggregation thus plugging the high permeability paths. Additional flooding with water provides recovery of bypassed oil. The initial conceptual screening of possible materials was followed by extensive batch and column lab tests. Then, 3D dynamic simulations at reservoir scale were performed to compensate for the temporary lack of pilot tests and/or field applications

    Occupational road safety management. A preliminary insight for a landfill remediation site

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    Road crashes have been internationally recognized as one of the main causes of death. On one hand, in Europe, many governments are struggling with the ambitious target of zero road deaths by 2050. On the other hand, they are facing remediation of illegal waste dumps, subject to European infringement procedures and involving a lot of workers and heavy materials transportation. With the aim to further explore occupational health and safety (OHS) issues related to the remediation of such contaminated sites close to urban areas, we decided to focus our attention on road crashes involving people while working in the transport of materials and goods (i.e., occupational road safety). In the scientific literature, it is considered an emerging matter of concern, but no significant contribution nor specific procedures have been provided in this research field for workers in charge of contaminated sites. With the aim to fill such a gap, we decided to, first, investigate the impacts of a landfill remediation site (Malagrotta landfill, near Rome—Italy) on road safety in the surrounding context. Then, road safety management measures for workers driving heavy vehicles from and toward the reference site were suggested through the means of cluster analysis. The main road accident determinants (road safety signs and traffic conditions) for heavy vehicles in the Rome municipality, derived from a sample of 166 events, occurred in the period 2017–2021 on target road infrastructures for the case study. The events were finally grouped with a k-means three-centroid solution. Overall, despite the intrinsic limits related to the data’s details, this paper provides a specific and data-driven methodology to address occupational road safety near a landfill remediation site and encourages further research in this field

    Growth hormone nadir during oral glucose load depends on waist circumference, gender and age: normative data in 231 healthy subjects.

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    Objective  (i) To analyse the predictors of GH suppression after standard glucose load (oGTT) in the healthy population and (ii) to establish the 97th percentile of GH nadir post-oGTT according to these variables. Design  Analytical, retrospective. Measurements  GH nadir after oGTT. Subjects  Two hundred and thirty-one healthy subjects (113 women, 118 men 15-80 years) were studied. Results  The GH nadir after glucose load ranged from 0·01 (<assay detection limit) to 0·65 Όg/l was higher in women and was inversely correlated with age, BMI, waist circumference, waist/hip, total cholesterol, triglycerides, basal and maximal glucose and basal insulin levels and directly correlated with basal GH levels, IGF-I SDS and HDL-cholesterol (P values ranging 0·004-<0·0001). On multistep regression analysis, the best predictors of nadir GH levels were waist circumference (t = -9·64, P < 0·0001), gender (t = -3·86, P = 0·0001) and age (t = -3·63, P = 0·0003). The results of comparative analysis among subjects grouped according to these variable showed different results in GH nadir in premenopausal women with waist circumference ≀88 cm (97th percentile 0·65 Όg/l), in premenopausal women with waist circumference ≀88 cm and in men of any age with waist circumference ≀102 cm (97th percentile 0·33 Όg/l) and in subjects of either gender and any age with waist circumference >88 cm in women and 102 cm in men (97th percentile 0·16 Όg/l). Conclusions  The results of this study show that GH nadir after oGTT should be analysed according to gender, menopausal status and waist circumference. The GH cut-off should be limited to the assay used
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