L’In Parmenidem di Marsilio Ficino nel dibattito tra platonismo e aristotelismo

2013 - 2014Questa tesi di dottorato si concentra sul commento al “Parmenide” di Marsilio Ficino, opera risalente agli anni 90 del quindicesimo secolo. La ricerca parte da una ricostruzione del contesto storico, politico e culturale entro cui matura il lavoro del filosofo; prende poi ad esaminare puntualmente il commento. Lo snodo centrale della ricerca è costituto dall’analisi e dalla disamina del confronto tra le tesi del Ficino e quelle esposte da Pico della Mirandola nella sua opera De Ente et Uno. La tesi riconosce come per Ficino l’Uno sia principio sovraessenziale, mentre per Pico l’Uno è l’uno della cosa. Questo dà luogo a due diverse visioni: per Ficino l’Uno rimane inesprimibile, mentre per Pico l’uno è tale solo nella sua espressione. Marsilio intende così salvaguardare l’assolutezza del divino, rifondando sulle basi della filosofia platonica la dottrina cristiana. Nella sua filosofia, difatti, si mostra l’aggiunta di una componente sovrarazionale ad una esclusivamente razionale. La pia philosophia del Ficino intende proprio mostrare la possibilità, per l’uomo, di tornare a Dio come al suo Principio – ed è in questo senso che la ricerca lo mostra, prima ancora che come un filosofo, come un riformatore teologico.[a cura dell'autore]XIII n.s

Seismic Performance of the San Pietro Dam

Abstract The paper focuses on the seismic performance of the San Pietro dam (located in Southern Italy) evaluated, with different levels of accuracy, through pseudo-static, simplified-displacement and dynamic 2D finite difference analyses. For critical mechanisms, detected through pseudo-static analyses, simplified displacement analyses were performed assessing the horizontal and vertical components of the expected permanent displacements. Dynamic analyses were carried out accounting for non-linear soil behavior under cyclic loading. The adopted input motions consist of several sets of accelerograms selected, from a worldwide database, assuming as a reference the seismicity of the area where the dam is located. The results of the analyses show a satisfactory behavior of the dam for the selected input motions

Screening-level analyses for the evaluation of the seismic performance of a zoned earth dam

Many existing earth dams have been designed and built worldwide before the establishment of a seismic code, so that it is of relevant interest to evaluate their seismic performance and post-seismic operational conditions. This requires an accurate geotechnical characterisation of the dam and foundation soils, a proper definition of the seismic scenarios at the site of the dam, the use of simplified procedures for screening-level seismic analyses and advanced nonlinear dynamic analyses to study the most critical seismic scenarios. This process has been used for the evaluation of the seismic performance of a zoned earth dam located in a high seismic hazard area of Southern Italy. In this paper the available data of historical seismicity at the site of the dam and the results of a probabilistic seismic hazard analysis are first discussed and input ground motions are selected using compatibility criteria with the energy and frequency content of the expected target motion in a range of vibration period relevant for the non-linear response of the dam. Seismic performance of the dam is then evaluated through procedures based on Newmarktype computations, in which permanent displacements are related to ground motion characteristics and to the seismic resistance of the dam, the latter evaluated detecting the earthquake-induced plastic mechanisms and the corresponding critical accelerations. Also, an original improvement of the well-known Makdisi & Seed procedure, was proposed to better capture the actual influence of non-linear soil behaviour in the evaluation of horizontal acceleration and permanent displacements of the crest of the dam. The analysis results pointed out the relevant role of the earthquake-induced shear strength reduction on the dam permanent displacements

Heuristic Learning as a Method for Improving Students’ Teamwork Skills in Physical Education

Transversal skills are the knowledge, skills, and personal qualities that are currently needed to meet the demands of the working world and everyday life. Schools have the task of equipping students with these skills, working not only on disciplinary goals but also on operational–behavioral goals. In 2018, the European Union adopted new recommendations on eight key competencies for lifelong learning and asked schools to implement new methods to develop these recommendations. To be successful, it is necessary to stimulate students’ development of these competences, which are also called soft skills, from the earliest years of the school experience. Physical education (PE) is called upon to make its contribution. In Italy, the two teaching methods used during PE classes are prescriptive teaching and heuristic learning. It is not clear which of the two methods is the most effective in improving soft skills, especially the skills involved in teamwork. The objective of this article was to compare the effects of these two teaching methods on students’ teamwork skills during PE classes in primary schools. After verifying the normality of the data, a Student’s t-test for dependent samples was performed to assess pre-test and post-test differences in each of two groups, while a Student’s t-test for independent samples was performed to compare the two groups after 3 months. Heuristic learning proved to be the most effective method for improving teamwork skills. The results may make an important contribution to future teacher training on the most effective teaching methods for developing students’ soft skills

Rare earth elements in human and animal health: State of art and research priorities

"Background: A number of applications have been developed using rare earth elements (REE), implying several human exposures and raising unsolved questions as to REE-associated health effects. Methods: A MedLine survey was retrieved from early reports (1980s) up to June 2015, focused on human and animal exposures to REE. Literature from animal models was selected focusing on REE-associated health effects. Results: Some REE occupational exposures, in jobs such as glass polishers, photoengravers and movie projectionists showed a few case reports on health effects affecting the respiratory system. No case-control or cohort studies of occupational REE exposures were retrieved. Environmental exposures have been biomonitored in populations residing in REE mining areas, showing REE accumulation. The case for a iatrogenic REE exposure was raised by the use of gadolinium-based contrast agents for nuclear magnetic resonance. Animal toxicity studies have shown REE toxicity, affecting a number of endpoints in liver, lungs and blood. On the other hand, the use of REE as feed additives in livestock is referred as a safe and promising device in zootechnical activities, possibly suggesting a hormetic effect both known for REE and for other xenobiotics. Thus, investigations on long-term exposures and observations are warranted. Conclusion: The state of art provides a limited definition of the health effects in occupationally or environmentally REE-exposed human populations. Research priorities should be addressed to case-control or cohort studies of REE-exposed humans and to life-long animal experiments. (C) 2015 Elsevier Inc. All rights reserved.

Comparison of different sets of immunological tests to identify treatable immunodeficiencies in adult bronchiectasis patients

Immunological tests; BronchiectasisPruebas inmunologicas; BronquiectasiasProves immunològiques; BronquiectasiesBackground The reported prevalence of immunodeficiencies in bronchiectasis patients is variable depending on the frequency and extent of immunological tests performed. European Respiratory Society guidelines recommend a minimum bundle of tests. Broadening the spectrum of immunological tests could increase the number of patients diagnosed with an immunodeficiency and those who could receive specific therapy. The primary objective of the present study was to assess the performance of different sets of immunological tests in diagnosing any, primary, secondary or treatable immunodeficiencies in adults with bronchiectasis. Methods An observational, cross-sectional study was conducted at the Bronchiectasis Program of the Policlinico University Hospital in Milan, Italy, from September 2016 to June 2019. Adult outpatients with a clinical and radiological diagnosis of bronchiectasis underwent the same immunological screening during the first visit when clinically stable consisting of: complete blood count; immunoglobulin (Ig) subclass tests for IgA, IgG, IgM and IgG; total IgE; lymphocyte subsets; and HIV antibodies. The primary endpoint was the prevalence of patients with any immunodeficiencies using five different sets of immunological tests. Results A total of 401 bronchiectasis patients underwent the immunological screening. A significantly different prevalence of bronchiectasis patients diagnosed with any, primary or secondary immunodeficiencies was found across different bundles. 44.6% of bronchiectasis patients had a diagnosis of immunodeficiency when IgG subclasses and lymphocyte subsets were added to the minimum bundle suggested by the guidelines. Conclusion A four-fold increase in the diagnosis of immunodeficiencies can be found in adults with bronchiectasis when IgG subclasses and lymphocyte subsets are added to the bundle of tests recommended by guidelines

Relationship between health, lifestyle, psychosocial factors and academic performance: a cross-sectional study at the University of Salerno

Background: The relationship between health indicators and quality of life is significantly important in clinical decisions. Health policy and an individual’s quality of life are important factors contributing to an individual's decisions and preferences. University students constitute a large part of the country's young population, so a healthy lifestyle is of crucial importance for this group. The aim of the present study was to investigate healthy lifestyle habits and its relationship with academic performance in undergraduate students of the University of Salerno. Methods: A cross-sectional study was conducted among undergraduate students of the University of Salerno. Data were collected by a self-report anonymous questionnaire. The field research was conducted among students of the University of Salerno in the academic years 2014/2015, from October to March. Descriptive statistics were used to describe sample characteristics. Test of proportions was used to test the differences between blocked and regular students. Analysis were conducted using STATA software. Results: A total of 519 students formed the sample. In total, 248 (47.78%) claimed to have blocks in their studies and among them 214 (86.29%) were out of course. The status of blocked students’ health promotion behaviors was significantly favorable compared to that of regular students. General health perception of the regular students yielded worse results than of the blocked students. Anxiety and depression were greater in regular students than blocked students. Conclusion: Results from the present study support our hypothesis of a relationship between health, lifestyle, psychosocial factors and academic performance: students with blocked had better health and lifestyle than regular students. Their attitude to resilience emerged from the ability to overcome difficult situations, but also from an attitude of arrogance despite being aware of the ability to study successfully. Probably the blocked in the studies was due to low self-esteem