المؤلفون: Senese, Riccardo, Robertson, Jacob H., Essler, Fabian H. L.

مصطلحات موضوعية: Condensed Matter - Statistical Mechanics

الوصف: We consider the probability distributions of the subsystem (staggered) magnetization in ordered and disordered models of quantum magnets in D dimensions. We focus on Heisenberg antiferromagnets and long-range transverse-field Ising models as particular examples. By employing a range of self-consistent time-dependent mean-field approximations in conjunction with Holstein-Primakoff, Dyson-Maleev, Schwinger boson and modified spin-wave theory representations we obtain results in thermal equilibrium as well as during non-equilibrium evolution after quantum quenches. To extract probability distributions we derive a simple formula for the characteristic function of generic quadratic observables in any Gaussian theory of bosons.

الوصول الحر: http://arxiv.org/abs/2312.11333Test

المؤلفون: Gabriele, Francesco, Senese, Riccardo, Castellani, Claudio, Benfatto, Lara

المصدر: Phys. Rev. B 109, 045137 (2024)

مصطلحات موضوعية: Condensed Matter - Strongly Correlated Electrons, Condensed Matter - Mesoscale and Nanoscale Physics

الوصف: Transverse plasma polaritons and longitudinal plasmons describe the propagation of light-matter modes in an isotropic metal. However, in a layered metal the anisotropy of the bare electromagnetic response mixes the longitudinal and transverse excitations, making the distinction between polariton and plasmon blurred at small wavevectors, where retardation effects of the electromagnetic interactions become quantitatively relevant. In the usual Kubo approach for the linear response, this effect appears as a mixing between the density and the transverse current fluctuations, that requires to revise the standard RPA approach for density correlations where only the instantaneous Coulomb potential is included. In this paper we derive the general expression for the density and current correlation functions at long wavelength in a layered metal, showing that below a crossover scale set by the anisotropy of the plasma frequencies retardation effects make the dispersion of the generalized plasma modes different from the standard RPA result. In addition, the mixed longitudinal and transverse nature of these excitations reflects in a double-peak structure for the density response, that can be eventually accessed by means of high-momentum resolution electron-energy-loss or X-rays spectroscopies.
Comment: 22 pages, 3 figures

الوصول الحر: http://arxiv.org/abs/2307.11613Test

المؤلفون: Robertson, Jacob H., Senese, Riccardo, Essler, Fabian H. L.

مصطلحات موضوعية: Condensed Matter - Statistical Mechanics

الوصف: The presence of long-lived oscillations in the expectation values of local observables after quantum quenches has recently attracted considerable attention in relation to weak ergodicity breaking. Here we focus on an alternative mechanism that gives rise to such oscillations in a class of systems that support kinematically protected gapped excitations at zero temperature. An open question in this context is whether such oscillations will ultimately decay. We resolve this issue by considering spin models that can be mapped to systems of weakly interacting fermions, which in turn are amenable to an analysis by standard methods based on the BBGKY hierarchy. We find that there is a parametrically large time scale after which the oscillations start to decay.
Comment: 10+2 pages, 13 Figures

الوصول الحر: http://arxiv.org/abs/2307.04466Test

المؤلفون: J. C. Lang, S. Samant, J. R. Cook, S. Ranjan, F. Senese, S. Starnino, S. Giuffrida, C. Azzari, V. Baldo, M. Pawaskar

المصدر: Scientific Reports, Vol 14, Iss 1, Pp 1-10 (2024)

مصطلحات موضوعية: Medicine, Science

الوصف: Abstract Italy implemented two-dose universal varicella vaccination (UVV) regionally from 2003 to 2013 and nationally from 2017 onwards. Our objective was to analyze regional disparities in varicella outcomes resulting from disparities in vaccine coverage rates (VCRs) projected over a 50-year time-horizon (2020–2070). A previously published dynamic transmission model was updated to quantify the potential public health impact of the UVV program in Italy at the national and regional levels. Four 2-dose vaccine strategies utilizing monovalent (V) and quadrivalent (MMRV) vaccines were evaluated for each region: (A) MMRV-MSD/MMRV-MSD, (B) MMRV-GSK/MMRV-GSK, (C) V-MSD/MMRV-MSD, and (D) V-GSK/MMRV-GSK. Costs were reported in 2022 Euros. Costs and quality-adjusted life-years (QALYs) were discounted 3% annually. Under strategy A, the three regions with the lowest first-dose VCR reported increased varicella cases (+ 34.3%), hospitalizations (+ 20.0%), QALYs lost (+ 5.9%), payer costs (+ 22.2%), and societal costs (+ 14.6%) over the 50-year time-horizon compared to the three regions with highest first-dose VCR. Regions with low first-dose VCR were more sensitive to changes in VCR than high first-dose VCR regions. Results with respect to second-dose VCR were qualitatively similar, although smaller in magnitude. Results were similar across all vaccine strategies.

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/2045-2322Test

الوصول الحر: https://doaj.org/article/c928e6cecce04181a18abda58b67f71fTest

المؤلفون: Robertson, Jacob H., Senese, Riccardo, Essler, Fabian H. L.

المصدر: SciPost Phys. 15, 032 (2023)

مصطلحات موضوعية: Condensed Matter - Statistical Mechanics, Condensed Matter - Strongly Correlated Electrons, Quantum Physics

الوصف: In a recent numerical study by Haldar et al. (Phys. Rev. X 11, 031062) it was shown that signatures of proximate quantum critical points can be observed at early and intermediate times after certain quantum quenches. Said work focused mainly on the case of the axial next-nearest neighbour Ising (ANNNI) model. Here we construct a simple time-dependent mean-field theory that allows us to obtain a quantitatively accurate description of these quenches at short times, which for reasons we explain remains a fair approximation at late times (with some caveats). Our approach provides a simple framework for understanding the reported numerical results as well as fundamental limitations on detecting quantum critical points through quench dynamics. We moreover explain the origin of the peculiar oscillatory behaviour seen in various observables as arising from the formation of a long-lived bound state.
Comment: 25 pages, 13 figures

الوصول الحر: http://arxiv.org/abs/2301.04070Test

المؤلفون: Ida Sergi, Lucia Ariemma, Marcello Gallucci, Augusto Gnisci, Roberto Marcone, Marco Perugini, Vincenzo Paolo Senese, Francesca Mottola

المصدر: Acta Psychologica, Vol 247, Iss , Pp 104319- (2024)

مصطلحات موضوعية: HEXACO personality traits, Adolescents, Academic performance, Psychology, BF1-990

الوصف: This paper aimed at investigating the relationship between HEXACO personality traits and academic performance in two samples of Italian 10–14 years old middle-school adolescents (N = 714 and N = 1093) using Multilevel Mixed Models. The main results show that: 1) Conscientiousness and Openness to Experience were the most important predictors of school performance, followed by Honesty-Humility; 2) a modest effect was present also for eXtraversion and Emotionality; 3) these influences occurred net of the influence of gender and class and could be generalized to male and female adolescents across 6th, 7th and 8th grade; 5) Perfectionism, Diligence and Prudence within Conscientiousness, Inquisitiveness within Openness, and Sincerity within Honesty-Humility were the facets more correlated with school performance; 6) results were replicated in two studies. Results are discussed and conclusions are drawn.

وصف الملف: electronic resource

العلاقة: http://www.sciencedirect.com/science/article/pii/S0001691824001963Test; https://doaj.org/toc/0001-6918Test

الوصول الحر: https://doaj.org/article/90bf6f8c56894887891f0b5872f1cc40Test

المؤلفون: Salzano, Sara, Zappullo, Isa, Senese, Vincenzo Paolo, Conson, Massimiliano, Finelli, Carmela, Mikulincer, Mario, Shaver, Phillip R

المصدر: Research in Psychotherapy Psychopathology Process and Outcome. 26(1)

مصطلحات موضوعية: Social and Personality Psychology, Psychology, power system, sense ofpower, behavioural systems, emotional problems, threat, PBSS, Italian version, validation

الوصف: The power behavioural system is a neurobehavioral system that motivates a person to acquire and control resources that are important for survival and reproductive success. When activated, its function is to protect or restore the sense of power, influence, or dominance. Repeated experiences of failure in achieving this goal may result in hyperactivation or deactivation of power-oriented behaviours (analogous to the secondary strategies observed with respect to the attachment behavioural system). Gaining a reliable and valid measure of hyperactivation and deactivation of the power system can be important for understanding an individual's responses to different social contexts and, in clinical settings, can help the therapist identify the client's difficulties that may undermine the therapeutic process. In the present study, we developed the Italian version of the Power Behavioural System Scale (PBSS), a self-report measure developed by Shaver et al. (2011) to assess individual differences in hyperactivation and deactivation of the power system. Results indicated an adequate fit to the expected two-factor model, and the measure proved to be reliable and had good convergent and structural validity, allowing the quantification of individual differences in power system hyperactivation and deactivation.

وصف الملف: application/pdf

الوصول الحر: https://escholarship.org/uc/item/4wv201v5Test

المؤلفون: Naana Afua Jumah, Alethea Kewayosh, Bernice Downey, Laura Campbell Senese, Jill Tinmouth

المصدر: BMC Public Health, Vol 23, Iss 1, Pp 1-7 (2023)

مصطلحات موضوعية: Cancer screening, Health equity, Indigenous health, Human rights, Health Equity Impact Assessment (HEIA) Tool, Social determinants of health, Public aspects of medicine, RA1-1270

الوصف: Abstract Background In spite of past efforts to increase screening uptake, the rates of screening-detectable cancers including breast, cervical, colorectal and lung are rising among Indigenous persons in Ontario compared to other Ontarians. The Ontario Ministry of Health has an equity framework, the Health Equity Impact Assessment (HEIA) Tool, that was developed to guide organizations in the provision of more equitable health and social services. Although the HEIA Tool identifies that the health of Indigenous persons may benefit from more equitable provision of health and social services, it provides very little specific guidance on how to apply the HEIA Tool in a culturally relevant way to policies and programs that may impact Indigenous peoples. Discussion Guided by the Calls to Action from the Truth and Reconciliation Commission of Canada and the United Nations Declaration on the Rights of Indigenous Peoples, an Indigenous Lens Tool was developed through a collaborative and iterative process with stakeholders at Cancer Care Ontario and with representatives from Indigenous community-based organizations. The Indigenous Lens Tool consists of four scenarios, with supporting documentation that provide context for each step of the HEIA Tool and thereby facilitate application of the equity framework to programs and policies. The document is in no way meant to be comprehensive or representative of the diverse health care experiences of Indigenous peoples living in Canada nor the social determinants that surround health and well-being of Indigenous peoples living in Canada. Rather, this document provides a first step to support development of policies and programs that recognize and uphold the rights to health and well-being of Indigenous peoples living in Canada. Conclusions The Indigenous Lens Tool was created to facilitate implementation of an existing health equity framework within Cancer Care Ontario (now Ontario Health). Even though the Indigenous Lens Tool was created for this purpose, the principles contained within it are translatable to other health and social service policy applications.

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/1471-2458Test

الوصول الحر: https://doaj.org/article/3ad6efc55c744525a62cf06558795f26Test

مستخلص: An electromechanical stimulation system for treating tinnitus comprising a proximal unit (10), configured to be placed proximate to a user's ear (1), and an input interface (50) configured to be operated by the user. The proximal unit comprises an electromechanical device (30) configured to transmit mechanical vibrations (35) with predetermined frequency (f), intensity (A) and waveform, to tissues proximate to the user's ear; a control unit (20), configured to actuate the electromechanical device in such a way that the frequency, the intensity and the waveform of the mechanical vibrations can be modified; a transceiver element (40) adapted to receive control signals (45) for the control unit. The input interface comprises a transmitter element (60) configured to transmit control signals (45) to the transceiver element; a microcontroller (70) configured to emit the control signals to generate the mechanical vibrations of the electromechanical device at a first frequency between 20 Hz and 20 kHz, and to cause a repetition of the vibrations for all the plurality of frequencies of this range; an input element (80) configured to receive from the user an instruction to start generating said vibrations at a stationary frequency corresponding to a current frequency, to stand by, to receive from the user an instruction to stop modifying the frequency of said vibrations, such that said user can notify to said microcontroller (70) a frequency value at which he/she perceives a significant decrease of tinnitus symptoms; to continue generating mechanical vibrations at this stationary frequency.

المؤلفون: Zappullo, Isa, Senese, Vincenzo Paolo, Milo, Rosa, Positano, Monica, Cecere, Roberta, Raimo, Gennaro, Conson, Massimiliano (ORCID 0000-0002-4776-306X)

المصدر: Journal of Autism and Developmental Disorders. Jan 2023 53(1):80-88.

تمت مراجعته من قبل الزملاء: Y

Page Count: 9

الواصفات: Autism Spectrum Disorders, Symptoms (Individual Disorders), Accuracy, Cognitive Ability, Visual Perception, Cognitive Processes, Interpersonal Competence, Attention Control, Imagination, Task Analysis, Correlation, Identification, Interference (Learning)

مستخلص: Inconsistent data are available on mental rotation performance in neurotypicals with high autistic-like traits. Here, we tested whether global-local visual processing abilities mediate the influence of specific autistic-like trait domains (social skill, attention switching, attention-to-detail, communication, and imagination) on mental rotation. Neurotypical participants (N = 128) underwent an assessment of autistic-like traits, a flanker task with hierarchical stimuli, and a mental rotation task. Path analysis showed that Reaction Times on the incongruent/local condition of the flanker task mediated the relationship between attention-to-detail and mental rotation accuracy. These findings indicate that a better capacity of ignoring incongruent global information to identify local information (reduced global interference) in persons with high non-social autistic-like traits, as attention-to-detail, facilitates mental rotation performance.

Abstractor: As Provided