Libera!

About: Libera! is a based out in . It is known for research contribution in the topics: Bellman equation & European union. The organization has 501 authors who have published 571 publications receiving 7962 citations.

Kinetic description of hadron-hadron collisions

Abstract: A transport model based on the mean free path approach to describe pp collisions is proposed. We assume that hadrons can be treated as bags of partons similarly to the MIT bag model. When the energy density in the collision is higher than a critical value, the bags break and partons are liberated. The partons expand and can make coalescence to form new hadrons. The results obtained compare very well with available data and some prediction for higher energies collisions are discussed. Based on the model we suggest that a QGP could already be formed in the pp collisions at high energies.

La sirena e l’acquasantiera nel Medioevo: un binomio difficile

Abstract: italianoQuesto articolo indaga la presenza della sirena sull’acquasantiera nel Medioevo. L’esame e stato condotto sui casi conservati e oggi noti, tutti concentrati cronologicamente (XII secolo) e territorialmente (Italia del Nord). Si tratta del pezzo nella pieve romanica di San Giorgio a Ganaceto (non lontano da Modena), dell’acquasantiera nella pieve romanica di Santa Maria Assunta a Rubbiano, nel comune di Montefiorino (nell’Appenino modenese), e della pila lustrale nel battistero del duomo di Cremona. Lo studio, che si avvale dei precedenti e non discute la cronologia e l’attribuzione gia oggetto di ampio dibattito da parte di altri studiosi, ha riesaminato invece l’iconografia, giungendo a ipotizzare che non sempre e possibile identificare i soggetti scolpiti con le sirene, come e stato fatto in passato. Appare invece opportuno riconoscervi esseri piu mostruosi, come la lamia o l’arpia, forse per valorizzare maggiormente le qualita salvifiche dell’acqua benedetta. Anche sui fonti battesimali la sirena appare personaggio poco sfruttato, ma l’indagine in questo contesto e ancora da svolgere in maniera sistematica. EnglishThis paper investigates the presence of the siren on the holy-water font in the Middle Ages. The study was carried out on the preserved and known cases, all grouped chronologically (12th century) and territorially (Northern Italy). This is the piece located in the Romanesque church of San Giorgio in Ganaceto (near Modena), the stoup in the Romanesque church of Santa Maria Assunta in Rubbiano, in the municipality of Montefiorino (in the Modenese Apennines), and the lustral pile in the baptistery of cathedral of Cremona. The study, which makes use of the precedents and does not discuss the chronology and the attribution already subject of wide debate by other scholars, has instead re-examined the iconography, coming to hypothesize that it is not always possible to identify the subjects sculpted with the sirens, as has been done in the past. On the other hand, it seems appropriate to recognize more monstrous beings, such as the lamia or the harpy, perhaps to enhance the salvific qualities of holy water. Moreover on the baptismal fonts the siren appears as a little exploited character, but the investigation in this context is still to be carried out in a systematic way.

How much are flexibility and uncertainty worth in patent licensing

Abstract: As patent licensing has become the prime driver of technology trade, understanding the rationales behind a properly-defined payment structure of the agreements is essential. Specifically, among the other remuneration components, upfront fees are critical in license negotiations since they imply a significant initial investment by the licensee and represent a source of liquidity for the licensor. We investigate how contractual flexibility, market uncertainty and technical uncertainty shape upfront fees from the licensee’s perspective. Upfront fees are shown to be positively associated with contractual flexibility and market uncertainty, while technical uncertainty is positively associated with upfront fees only if the license warrants contractual flexibility to the licensee. Licensees therefore do not necessarily see uncertainty as a negative attribute of a patent license, but rather as a potential value, above all if in presence of contractual flexibility.

Acute Stress Response Profiles in Health Workers Facing SARS-CoV-2

Abstract: Objective The study is an explorative investigation aimed to assess the differences in acute stress response patterns of health workers facing coronavirus disease 2019 (COVID-19) during Italy's first lockdown. Methods A cross-sectional investigation using convenience sampling method was conducted in Italy during April 2020. Eight hundred fifty-eight health workers participated in the research filling out self-report measures including Patient Health Questionnaire (PHQ-9), Generalized Anxiety Disorder (GAD-7), Insomnia Severity Index (ISI), and Impact of Event Scale-Revised (IES-R). Results Moderate/severe depression was found in 28.9% (95% CI, 25.8-32.04), moderate/severe anxiety in 55.4% (95% CI, 51.9-58.8), insomnia in 15% (95% CI, 12.5-17.5), and distress in 52.5% (95% CI, 48.5%-56.6) of participants. The 3% of health workers reported frequent suicidal thoughts. Female sex, working for >15 h/week in a COVID-19 unit, and living apart from family were associated with a significantly higher risk of distress, anxiety, insomnia, depression, and functional impairment. Four profiles were identified on the basis of psychopathological measures: Profile_0 included 44% (N = 270); Profile_1, 25.6% (N = 157); Profile_2, 19.1% (N = 117); and Profile_3, 11.3% (N = 69) of participants. Results showed a significant effect for Profiles X IES-R (η2 = 0.079; f = 0.29), indicating that in all profiles, except for Profile_0, avoidance scale is lower than hyperarousal and intrusion symptoms scales of the IES-R. This characteristic could be a probable index of the control exerted by the responders to not fly away from their job. Conclusion The identification of specific profiles could help psychiatrists and emergency psychologists to build specific interventions in terms of both primary and secondary prevention to face future waves of the COVID-19 outbreak.