19 research outputs found

    Differenti approcci alla costruzione degli indicatori compositi

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    Obiettivo di questo lavoro è illustrare i diversi approcci alla costruzione degli indicatori compositi. Sono illustrati gli approcci Theory Based, Data Driven e Model Based descrivendo, in dettaglio, gli aspetti positivi di questo ultimo

    Misurare le preferenze ed il gradimento dei cittadini attraverso un modello PLS-PM

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    Obiettivo di questo lavoro è illustrare la metodologia utilizzata ed i principali risultati di una indagine svolta in un piccolo Comune della Campania per rilevare capire le opinioni dei cittadini, in merito alla possibile espansione territoriale del Comune, collegandola alla soddisfazione complessiva degli stessi in relazione all’operato dell’amministrazion

    PLS path modelling for the evaluation of patients' satisfaction of a department

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    Patient satisfaction surveys are gaining in importance and should be at the heart of any healthcare facility. It's valuable to get a holistic view of what patients really think about the care and treatment they receive. Patient satisfaction can be measured by methods based on latent variables, i.e., variables that are not directly observed but deducted from mathematical analysis. Those methods include the partial least squares (PLS) path modelling aimed at defining optimal linear relations among latent variables in order to assemble the best set of predictions. Aim of this paper is show an application of patient satisfaction survey made on the Department of Day Surgery of the Caserta' Hospital

    Sparsity Data Reduction In Textual Network Analysis. An exercise on Sustainability meaning

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    In this paper, we propose a new strategy to derive an unweighted adjacency matrix from an affiliation matrix. The strategy is based on the use of a biclustering technique in order to reduce the sparsity of the matrix without changing the network structure. As an example, we implemented this approach to seek the common meaning of the term sustainability by using an affiliation matrix characterized by a core-periphery structure. The application of BiMax Biclustering algorithm shows a sparsity reduction of the unweighted adjacency matrix with an invariant network structure

    How Subjective Well-being Evolved Over Time: Insights from Bibliometric and Text Mining Analyses

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    The work investigates the evolution of subjective well-being research based on bibliometric analysis and text mining techniques. It provides a comprehensive overview of the publications from 1966 to 2022 inclusive. 12,376 publications were downloaded from the Scopus database. The paper affords information regarding the evolution of the field in terms of identifying key publications and authors as well as how certain topics have evolved over time. Using topic modeling and text analysis techniques, the main research topics are identified. The analysis, which highlights a rapid growth in publications observed since 2000, demonstrates how the concept of well-being from a subjective point of view is widely studied by researchers in various fields. Moreover, if before this concept was mainly analyzed in the psychological field, nowadays there are journals that devote more space to these issues in terms of individual happiness and social issues

    Hierarchical damage mechanisms in composite materials subjected to fatigue loadings

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    The strength degradation of fiber reinforced composites subjected to constant amplitude (CA) fatigue loadings can be described by a two-parameter residual strength model. From the analytical approach it results that under moderate loadings the multiple damage mechanisms develop with different kinetics and manifest their effectiveness at different time scales highlighting the three-Stage hierarchical nature of damage accumulation in composites. The model captures the sequence of damage accumulation mechanisms from diffuse matrix cracking (I), to fiber/matrix interface failure (II) to fiber and ply rupture and delamination (III). Further, by increasing the loading severity it appears that the different mechanisms superpose witnessing their simultaneous co-existence

    The Use of Partial Least Squares–Path Modelling to Understand the Impact of Ambivalent Sexism on Violence-Justification among Adolescents

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    Gender violence is generally conceived as a phenomenon concerning only adults. Nonetheless, it is also perpetrated within teenagers’ relationships, as many empirical studies have shown. We therefore have focused our attention on a non-probabilistic sample consisting of 400 adolescents living in Naples (Italy), to study the association between sexism and the justification of violent attitudes. Generally, sexism is recognised as a discriminatory attitude towards people, based on their biological sex. However, it is conventional to talk about sexism as a prejudice against women. The Ambivalent Sexism Inventory (ASI) for adolescents was used to evaluate the two dimensions of ambivalent sexism, i.e., hostile sexism (HS) and benevolent sexism (BS). Moreover, the questionnaire regarding attitudes towards diversity and violence (CADV) was administered to assess participants’ attitudes towards violence. A Partial Least Square–Second Order Path Model reveals that girls’ ambivalent sexism is affected more by benevolent sexism than hostile sexism. On the contrary, among boys, hostile sexism has a higher impact. Finally, benevolent sexist girls justify domestic violence more than boys do

    A novel method to allow noninvasive, longitudinal imaging of the murine immune system in vivo

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    In vivo imaging has revolutionized understanding of the spatiotemporal complexity that subserves the generation of successful effector and regulatory immune responses. Until now, invasive surgery has been required for microscopic access to lymph nodes (LNs), making repeated imaging of the same animal impractical and potentially affecting lymphocyte behavior. To allow longitudinal in vivo imaging, we conceived the novel approach of transplanting LNs into the mouse ear pinna. Transplanted LNs maintain the structural and cellular organization of conventional secondary lymphoid organs. They participate in lymphocyte recirculation and exhibit the capacity to receive and respond to local antigenic challenge. The same LN could be repeatedly imaged through time without the requirement for surgical exposure, and the dynamic behavior of the cells within the transplanted LN could be characterized. Crucially, the use of blood vessels as fiducial markers also allowed precise re-registration of the same regions for longitudinal imaging. Thus, we provide the first demonstration of a method for repeated, noninvasive, in vivo imaging of lymphocyte behavior
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