Archivio Istituzionale della Ricerca- Università del Salento
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Search for Dark Matter Produced in Association with a Dark Higgs Boson in the bbbar Final State Using pp Collisions at sqrt(s) = 13 TeV with the ATLAS Detector
Full text linkA search is performed for dark matter particles produced in association with a resonantly produced pair of b-quarks with 30 bbbar topology is reconstructed using jet reclustering and a new identification algorithm. This search places stringent constraints across regions of the dark Higgs model parameter space that satisfy the observed relic density, excluding dark Higgs bosons with masses between 30 and 150 GeV in benchmark scenarios with Z' mediator masses up to 4.8 TeV at 95% confidence level
Passive and Contactless Complex Power Monitoring of Electrical Systems
No full textMaintaining the reliability of electric power infrastructure is essential for preventing outages, optimizing system performance, and quickly detecting faults across diverse industrial applications. Traditional monitoring methods typically require direct contact with power lines, presenting significant safety issues and creating difficulties in accessing hard-to-reach or buried cables. In some scenarios, the dependency on batteries of these power-monitoring systems can limit their sustainability and reduce their actual applicability. In response to these challenges, this article presents a novel solution: a fully passive and contactless, electric power monitoring system with near field communication (NFC) interface. The proposed system integrates a custom-designed contactless flexible, curved, ac voltage sensor and a Rogowski coil for current detection, combined with a signal conditioning circuit and a digital processing unit. The sensory circuit is energized by the high-frequency signal generated by an NFC reader, which also handles data exchange with the system. Furthermore, the system has been modeled using SPICE software, and metrics for measuring complex power, phase shift, frequency, voltage, and current of electrical systems have been implemented directly on the hardware. Finally, a proof-of-concept has been developed and successfully tested on real electrical loads, demonstrating the system functionality[Figure Presented]
Rethinking EUS-choledochoduodenostomy with LAMS: the Indication Matters as Much as the Stent
No full textCompetencies for the transition from the psychometric approach to personalization: the DINO teaching framework
No full textEducational systems have long faced the challenge of designing learning environments that effectively address the considerable intra- and interindividual variability among students. While contemporary educational paradigms advocate for the personalization of learning opportunities and the universality of learning contexts as fundamental principles, the structural foundations of most school systems remain rooted in the demands of a bygone era: the Industrial Age.
A paradigmatic shift is therefore imperative to meet the evolving calls of contemporary society. Achieving this transformation requires a strategic investment in the development of teachers’ professional competencies, a critical lever for pedagogical innovation, with technology playing a pivotal role in facilitating this transition. In response to this need, the web-based platform DINO Teaching was developed. Grounded in a comparative analysis of several models of differentiated instruction, the platform integrates these models into a unified conceptual framework. It is designed not only to support educators in the development of differentiated learning pathways, but also to foster a deeper transformation in the cognitive processes underlying instructional designing processes. The platform was implemented and evaluated over two academic years in teacher training programs. This
study examines its effectiveness in fostering personalized learning and explores the barriers and facilitators influencing its practical application
Editorial: The Special Section on “Twin Transition and Entrepreneurial Behavior: Navigating the Path to Green and Digital Transformation for Sustainable Entrepreneurship”
No full textThis special issue comprises seven articles exploring various facets of digital transformation and sustainability within
entrepreneurial, corporate, and financial contexts. The articles
showcase a variety of theoretical frameworks and empirical
methodologies, including resource-based view (RBV), dynamic
capabilities, complex adaptive systems, patent analytics, econometric modeling, and in-depth case studies. A unifying thread
running through these studies is the recognition that digital
capabilities–whether in the form of AI, fintech, data analytics,
or broader transformation process and infrastructures–derive
their transformative potential when aligned with sustainability imperatives. Their true value emerges when leveraged to
support the strategic objectives of environmental and social
impact, and when embedded within a broader cultural, organizational, and policy framework geared toward responsible
innovation.
To structure the discussion, we identify three thematic clusters
that reflect a logical progression from ecosystem-level dynamics
to firm-level capabilities, to broader institutional and financial
structures. The first cluster focuses on Entrepreneurial Ecosystems (EE) and their role in fostering the twin transition of digital
and environmental sustainability. Papers included in this first
cluster are as follow
The limiting distribution of a bivariate random vector under univariate truncation
Full text linkThe dependence structure in the tails of bivariate random vectors is studied by means of the copula representation. In particular, asymptotic results for the distribution of a random pair under univariate truncation is proved in the spirit of multivariate extensions of the Pickands-Balkema-de Haan Theorem
Prejudice, Proxemic Space, and Social Odor: The Representation of the ‘Outsider’ Through an Evolutionary Metaverse Psychology Perspective
Full text linkPrejudices, particularly those related to social biases, are shaped by various cognitive and sensory mechanisms. This study investigates the interaction between olfactory perception and propensity and implicit or explicit prejudices through three experimental protocols in a metaverse condition. Experiment 1 examines the impact of five different odors on proxemic behavior when interacting with individuals from stigmatized social groups. Experiment 2 integrates electroencephalography (EEG) to analyze the neural correlates of prejudice-related responses to olfactory stimuli. Experiment 3 explores implicit biases through the Implicit Association Test (IAT) in relation to different fragrances, without employing virtual reality. The proposed protocol is expected to demonstrate a significant relationship between olfactory cues, linked to social relationships, and implicit or explicit prejudices, with variations based on individual differences. These insights will contribute to psychological, neuroscientific, and social interventions, offering new perspectives on the unconscious mechanisms of bias formation. Additionally, this study highlights the potential of virtual reality and olfactory stimuli as innovative tools for studying and addressing social biases in controlled environments
Splendori e miserie di un copista filosofo: Cinico a Napoli dopo gli Aragonesi
Full text linkIl contributo indaga gli ultimi anni di vita e di attività del famoso copista e volgarizzatore Giovan Marco Cinico (ca. 1430-post 1503), per circa quarant’anni al servizio dei regnanti aragonesi a Napoli. Sono presentati alcuni dati finora trascurati, fra cui una lettera indirizzata al re del Portogallo Manuele I nel 1514
Underwater vs Traction-assisted ESD in Colorectal Lesions Underwater versus Traction-assisted Endoscopic Submucosal Dissection for Colorectal Lesions: A Network Meta-Analysis of Randomized Controlled Trials
No full textBackground and aims: Among the newly established endoscopic submucosal dissection (ESD) techniques, underwater ESD using saline (UW-ESD) and traction-assisted ESD (T-ESD) aim to address the limitations of conventional ESD (C-ESD) for the resection of colorectal lesions. However, their comparative efficacy and safety remain uncertain. Methods: A systematic review and network meta-analysis (NMA) of randomized controlled trials (RCTs) was conducted to compare UW-ESD and T-ESD. Main outcomes included R0 resection, dissection speed, and adverse events (AEs). We conducted indirect comparisons between UW-ESD and T-ESD and direct comparisons with C-ESD. Results were presented as risk ratios (RR) and standard mean deviations (SMD) with 95% confidence intervals (CI). Results: Four RCTs including 543 ESD (98 UW-ESD, 171 T-ESD, 274 C-ESD) were analyzed. For R0 resection no significant difference was observed between UW-ESD and T-ESD (RR = 0.99, 95% CI: 0.92-1.07), and both were comparable to C-ESD (UW-ESD: RR = 1.02, 95% CI: 0.98-1.07; T-ESD: RR = 1.01, 95% CI: 0.96-1.07). Dissection speed was significantly higher with UW-ESD compared to both T-ESD (SMD = 0.36, 95% CI: 0.14-0.87) and C-ESD (SMD = 0.54, 95% CI: 0.15-0.92). No significant difference in AEs was observed between UW-ESD and T-ESD (RR = 1.80, 95% CI: 0.14-23.16), and both were comparable to C-ESD (UW-ESD: RR = 0.48, 95% CI: 0.06-4.15; T-ESD: RR = 0.86, 95% CI: 0.22-3.37). Conclusion: UW-ESD and T-ESD are both effective and safe strategies for colorectal lesions resection; however, UW-ESD is the only technique that has demonstrated superior dissection speed
Measurement of W±-boson differential cross-sections in proton-proton collisions with low pile-up data at sqrt(s) = 5.02 TeV and 13 TeV with the ATLAS detector
No full textHigh precision single-differential W±-boson production cross-sections as a function of electron or muon transverse momentum pT or their pseudorapidity η, as well as double-differential cross-sections as functions of these variables, are measured in proton–proton collisions at centre-of-mass energies sqrt(s) =5.02 TeV and 13 TeV. The W-boson charge asymmetry as a function of lepton η is also measured. The data, collected in dedicated runs at reduced instantaneous luminosity with the ATLAS detector at the Large Hadron Collider, correspond to integrated luminosities of 255 pb-1 at 5.02 TeV and 338 pb-1 at 13 TeV. The measurements are in agreement with Standard-Model predictions calculated at next-to-next-to-leading-order in the strong coupling constant αs including transverse-momentum resummation at next-to-next-to-leading logarithmic accuracy using several parton distribution functions. The impact of the measured differential cross-sections as a function of lepton η on the determination of these functions is studied using a profiling technique