Low-Energy Supernovae Severely Constrain Radiative Particle Decays.

The hot and dense core formed in the collapse of a massive star is a powerful source of hypothetical feebly interacting particles such as sterile neutrinos, dark photons, axionlike particles (ALPs), and others. Radiative decays such as a→2γ deposit this energy in the surrounding material if the mean free path is less than the radius of the progenitor star. For the first time, we use a supernova (SN) population with particularly low explosion energies as the most sensitive calorimeters to constrain this possibility. These SNe are observationally identified as low-luminosity events with low ejecta velocities and low masses of ejected ^{56}Ni. Their low energies limit the energy deposition from particle decays to less than about 0.1 B, where 1 B(bethe)=10^{51} erg. For 1-500 MeV-mass ALPs, this generic argument excludes ALP-photon couplings G_{aγγ} in the 10^{-10}-10^{-8} GeV^{-1} range.

Comparison of Low-Redshift Lyman-α Forest Observations to Hydrodynamical Simulations with Dark Photon Dark Matter.

Recent work has suggested that an additional ≲6.9 eV per baryon of heating in the intergalactic medium is needed to reconcile hydrodynamical simulations with Lyman-α forest absorption line widths at redshift z≃0.1. Resonant conversion of dark photon dark matter into low frequency photons is a viable source of such heating. We perform the first hydrodynamical simulations including dark photon heating and show that dark photons with mass m_{A^{'}}∼8×10^{-14} eV c^{-2} and kinetic mixing ε∼5×10^{-15} can alleviate the heating excess. A prediction of this model is a nonstandard thermal history for underdense gas at z≳3.

The need to restore generative identity in women undergoing assisted reproductive technology: Development and psychometric validation of the fertility reparation inventory.

OBJECTIVE: This study described the development and psychometric evaluation of the fertility reparation inventory, providing measures of manic and expiatory reparation as symbolic dynamics of restoring one's procreative and generative identity through Assisted Reproductive Technology (ART). METHODS: Two cross-sectional studies were conducted on female patients undergoing ART (N = 150) and women from the general population (N = 250), respectively. Exploratory factor analysis and confirmatory factor analysis assessed construct validity and reliability. Pearson's bivariate correlations were used to provide convergent evidence of validity with omnipotence, perceived infertility-related stress, anxiety, depression, need for reparation, fear of punishment, and hope. RESULTS: The results confirmed a two-factor solution of the 12-item instrument, with adequate fit, a very good internal consistency, and well-supported forms of convergent validity. CONCLUSION: This study provides a meaningful psychodynamic contribution, in both theoretical and empirical terms, for the understanding of emotional dynamics and psychological issues underlying the demand for ART.

Searching for the Radiative Decay of the Cosmic Neutrino Background with Line-Intensity Mapping.

We study the possibility to use line-intensity mapping (LIM) to seek photons from the radiative decay of neutrinos in the cosmic neutrino background. The Standard Model prediction for the rate for these decays is extremely small, but it can be enhanced if new physics increases the neutrino electromagnetic moments. The decay photons will appear as an interloper of astrophysical spectral lines. We propose that the neutrino-decay line can be identified with anisotropies in LIM clustering and also with the voxel intensity distribution. Ongoing and future LIM experiments will have-depending on the neutrino hierarchy, transition, and experiment considered-a sensitivity to an effective electromagnetic transition moment ∼10^{-12}-10^{-8}(m_{i}c^{2}/0.1 eV)^{3/2}µ_{B}, where m_{i} is the mass of the decaying neutrino and µ_{B} is the Bohr magneton. This will be significantly more sensitive than cosmic microwave background spectral distortions, and it will be competitive with stellar cooling studies. As a by-product, we also report an analytic form of the one-point probability distribution function for neutrino-density fluctuations, obtained from the quijote simulations using symbolic regression.

Axionlike Particles from Hypernovae.

It was recently pointed out that very energetic subclasses of supernovae (SNe), like hypernovae and superluminous SNe, might host ultrastrong magnetic fields in their core. Such fields may catalyze the production of feebly interacting particles, changing the predicted emission rates. Here we consider the case of axionlike particles (ALPs) and show that the predicted large scale magnetic fields in the core contribute significantly to the ALP production, via a coherent conversion of thermal photons. Using recent state-of-the-art supernova (SN) simulations, including magnetohydrodynamics, we find that, if ALPs have masses m_{a}∼O(10) MeV, their emissivity in such rare but exciting conditions via magnetic conversions would be over 2 orders of magnitude larger than previously estimated. Moreover, the radiative decay of these massive ALPs would lead to a peculiar delay in the arrival times of the daughter photons. Therefore, high-statistics gamma-ray satellites can potentially discover MeV ALPs in an unprobed region of the parameter space and shed light on the magnetohydrodynamical nature of the SN explosion.

Edges and Endpoints in 21-cm Observations from Resonant Photon Production.

We introduce a novel class of signatures-spectral edges and end points-in 21-cm measurements resulting from interactions between the standard and dark sectors. Within the context of a kinetically mixed dark photon, we demonstrate how resonant dark photon-to-photon conversions can imprint distinctive spectral features in the observed 21-cm brightness temperature, with implications for current, upcoming, and proposed experiments targeting the cosmic dawn and the dark ages. These signatures open up a qualitatively new way to look for physics beyond the Standard Model using 21-cm observations.

Detectable Environmental Effects in GW190521-like Black-Hole Binaries with LISA.

GW190521 is the compact binary with the largest masses observed to date, with at least one black hole in the pair-instability gap. This event has also been claimed to be associated with an optical flare observed by the Zwicky Transient Facility in an active galactic nucleus (AGN), possibly due to the postmerger motion of the merger remnant in the AGN gaseous disk. The Laser Interferometer Space Antenna (LISA) may detect up to ten such gas-rich black-hole binaries months to years before their detection by Laser Interferometer Gravitational Wave Observatory or Virgo-like interferometers, localizing them in the sky within ≈1°^{2}. LISA will also measure directly deviations from purely vacuum and stationary waveforms arising from gas accretion, dynamical friction, and orbital motion around the AGN's massive black hole (acceleration, strong lensing, and Doppler modulation). LISA will therefore be crucial to enable us to point electromagnetic telescopes ahead of time toward this novel class of gas-rich sources, to gain direct insight on their physics, and to disentangle environmental effects from corrections to general relativity that may also appear in the waveforms at low frequencies.

Addiction Nursing Competencies: A Comprehensive Toolkit for the Addictions Nurse.

With the increased role of nurses in caring for patients with substance addiction, there was a clear need to develop the Addiction Nursing Competencies to guide and support the nursing workforce. A literature search revealed a lack of formal instruments to assess and guide nurses in caring for persons with substance use disorders. The Addiction Nursing Competencies were created using existing nursing education frameworks and addiction nurse care manager clinical guidelines.

Job demands and perceived distance in leader-follower relationships: A study on emotional exhaustion among nurses.

BACKGROUND: Emotional exhaustion is the most important component of burnout syndrome, which is a threat to nurses' psychological well-being. OBJECTIVES: The study investigated the impact of job demands - workload, cognitive demands, emotional demands, role conflict - and perceived leader-follower interaction frequency on emotional exhaustion among nurses. METHODS: This study was conducted at three hospitals in northern Italy through an anonymous self-report questionnaire administered to 560 nurses. Multiple hierarchical regression was performed. RESULTS: Workload and role conflict were positively related to emotional exhaustion, whereas cognitive demands and perceived leader-follower interaction frequency were negatively related. Emotional demands displayed a non-significant relationship with emotional exhaustion. Further analyses were performed to comment on the unexpected outcome of cognitive demands. A critical role of the perception of "distance" in leader-follower relationships on burnout was found. CONCLUSIONS: This study provides novel insights into the relationship between job demands and burnout, and much needed empirical evidence on leader-follower relationships among nurses, pointing to the important role played by leader distance in nurses' well-being at work. Findings highlight the importance of training head nurses in managing their working relationship distance from their followers in order to help them soothing emotional exhaustion.

Dark Photon Oscillations in Our Inhomogeneous Universe.

A dark photon kinetically mixing with the ordinary photon represents one of the simplest viable extensions to the standard model, and would induce oscillations with observable imprints on cosmology. Oscillations are resonantly enhanced if the dark photon mass equals the ordinary photon plasma mass, which tracks the free electron number density. Previous studies have assumed a homogeneous Universe; in this Letter, we introduce for the first time an analytic formalism for treating resonant oscillations in the presence of inhomogeneities of the photon plasma mass. We apply our formalism to determine constraints from cosmic microwave background photons oscillating into dark photons, and from heating of the primordial plasma due to dark photon dark matter converting into low-energy photons. Including the effect of inhomogeneities demonstrates that prior homogeneous constraints are not conservative, and simultaneously extends current experimental limits into a vast new parameter space.

Giving a Voice to Gambling Addiction: Analysis of Personal Narratives.

Gambling addiction (GA) is now considered a worldwide health issue. Although the topic of disorder awareness is a central issue in clinical practice, there are few studies examining this dimension in relation to GA. To bridge this gap, we conducted a qualitative study, administering interviews focused on awareness of GA and eliciting narratives of both the disorder and the whole life of participants. We adopted both qualitative and quantitative methods of research, using computer-aided content analysis. We administered to a sample of 15 treatment-seeking gamblers the Psychiatric Interview for Gambling Addiction and performed a qualitative analysis of the text using the T-Lab software. Five main thematic domains and four factors emerged, shedding light on specific aspects underlying the development of and recovery from GA. Specifically, the results suggested that dissociation processes, materialistic thinking and difficulties in social achievement underlie the subjective experience of GA. Moreover, closeness in interpersonal relationships and awareness of the disorder emerged as core features in the process of change. As a whole, the results highlight the specificities of disorder awareness in addicted gamblers. We discuss these results within the context of previous research and suggest clinical implications for the treatment of GA.

A systematic review of psychodynamic theories in community psychology: Discovering the unconscious in community work.

The aim of this systematic review is to provide a narrative synthesis of the peer-reviewed literature regarding the role of psychodynamics in community psychology. The authors screened 301 records on the topic, found in major citation databases (Scopus and Web of Science) without time or language restrictions. Ten articles addressing the review question were identified, showing the contributions of interpersonal psychoanalysis, Adlerian psychology, the Tavistock psychodynamic model, and Lacanian psychoanalysis. Several points of synergy between community psychology and psychodynamics were outlined mainly concerning empowerment theory, preventative and ecological perspective, power, and social order. Besides, the view on the community life, the role of emotion, and the conceptualization of the unconscious domain are discussed. Implications for community interventions are highlighted, regarding clients' demands, the role of community practitioners, and the use of transference/countertransference in consultative work. Limitations and future directions are also considered.

AIDS as social construction: text mining of AIDS-related information in the Italian press.

Given the relevance of AIDS as a public health problem in the Italian context and of the role of mass media in the social construction of the phenomenon, the aim of the present study is twofold: (1) to explore the main AIDS-related themes in the Italian popular press; (2) to analyse the temporal trends of AIDS representations over the last decades. For the research, we decided to consult Italian newspaper articles produced between 1985 and 1990 and between 2005 and 2010 using the archives of the main two national newspapers (La Repubblica and Corriere della Sera), resulting in an overall sample of 446 newspaper articles. A computer-aided content analysis allowed the detection of five different thematic domains (clusters), respectively focused on: Medical care (7.47%), Family support (37.03%), Science and religion debate (27%), Social exclusion (17.6%) and Healthcare policies (10.9%). These thematic domains are conceived along two main latent dimensions (factors) which explain 72.47% of the data variance which respectively deal with: (1) Attitudes towards people with AIDS (care versus avoidance) and (2) Social mandate on AIDS (powerlessness versus control). The study results also reveal the potential evolution of representations of people with AIDS over time: from stigmatised subjects who represent a risk for the entire society within a climate of social control to people progressively symbolised as frail subjects that need to be taken care of.

Trends of psychology-related research on euthanasia: a qualitative software-based thematic analysis of journal abstracts.

Euthanasia has received increasing attention in both academic and public debates as one of the most controversial issues. However, the contribution of psychology-related themes to the topic has had little role on these ongoing debates. The aim of the present study is twofold: (1) to explore the main themes relating to euthanasia as provided by psychology-related research; (2) to analyze the temporal trends of psychology-related research on euthanasia over the last decades. A comprehensive search of academic literature was conducted on PsychINFO database. A qualitative software-based thematic analysis was carried out on 602 journal abstracts published from 1935 to 2014. This study highlighted four different thematic areas which characterized the scientific discourse on euthanasia: (1) moral values, in terms of religious, philosophical, and social implications concerning the individual's decision to die; (2) professional ethics, in terms of health and social workers' legal responsibility in death assistance; (3) end-of-life care, with regard to medical options provided to support individuals nearing death; and (4) patient's right to healthcare, in terms of access to palliative care and better quality of dying. Euthanasia discourse over the last decades seems to be overall characterized by two main dimensions: (1) the increasing trend of social legitimacy and acceptability of euthanasia over time, which moved from ethical to healthcare issues; and (2) the curvilinear temporal trend about the request/provision process in euthanasia, which moved from patient's decision for ending life (mainly characterizing the most past and recent research) to the role of health professionals (with a peak in the 1990s). The results suggest palliative care as a potential future research area which can provide healthcare providers with skills to 'connect' with patients, understand patients' hidden agendas, and grant a good quality of life and dying process.

Exploring quality of life in Italian patients with rare disease: a computer-aided content analysis of illness stories.

The present study used a narrative-based approach to identify common themes that characterized the illness experience and quality of life of patients affected by rare disease (RD). Textual data were comprised of illness stories written by 32 adult Italian patients (eight men and 24 women), with the following RD diagnoses: amyotrophic lateral sclerosis (n = 12), anorectal atresia (n = 4), Poland syndrome (n = 4), and idiopathic pulmonary hypertension (n = 12). Computer-aided content analysis was performed to detect the main themes (cluster analysis) and latent factors (correspondence analysis) emerging in patients' narratives, and to test their association with gender and diagnosis. Four thematic domains were detected in the textual corpus, which are respectively referred to as: hopelessness (12.74%), need for autonomy (38.43%), search for normalcy (11.89%), and expectations of recovery (36.94%). Three latent factors explained the overall data variance: the relationship with social and medical healthcare providers (F1), adjustment processes to disease and social limitations (F2), and self-beliefs and coping (F3). Some differences were revealed with respect to patient gender and diagnosis. Illness stories highlight the significant relationship of RD patients with healthcare services and their need for a holistic approach because of the lack of effective treatment. Physical limitation and emotional distress do not necessarily seem to overlap for adjustment and quality of life (QoL). Overall, the perception of illness chronicity is likely to affect patients' self-beliefs and coping with more than their feeling of abnormalcy, that is the less salient theme.

Indirect orthodontic bonding using an original 3D method compared with conventional technique: A narrative review.

As well known success in orthodontics is related to a correct diagnosis and to a carefull treatment planning. Our study aims to provide clinician with a reproducible and precise method, for orthodontic indirect bonding, thanks to CBCT images and due to a CAD-CAM process. METHODS: A case of an orthodontic treatment plan, of a female patient, 37 years old, was selected. Plaster models were digitally acquired using the Extra-Oral scanner Maestro 3D and processed within the Studio Maestro 3D software. CBCT images in DICOM format were imported into the MIMICS software, in order to perform the segmentation of the dental elements, and to obtain a three-dimensional coronal-root dental arches model. The DICOM file thus processed was exported in an STL file, reworked with Meshmixer software to improve image quality, and imported into the 3D Maestro software to be superimposed on the digital model. In this way a three-dimensional real model of the dental arches was developed. After an accurate orthodontic virtual set-up, we proceeded to brackets positioning on the 3D model of the dental arches. Subsequently, a virtual transfer template was created, in order to carry out the digital printing of a thermo-printed mask necessary to perform an indirect bonding of the orthodontic appliance. RESULTS: The original digital workflow proposed in this study allows the development of a real and non-ideal three-dimensional coronal-root model of the dental arches; this model can be used for indirect orthodontic bonding eliminating any errors in the expression of 1st, 2nd and 3rd order information of the pre-informed orthodontic appliance. CONCLUSIONS: Technological advancements in oral scanning and 3D printing will allow the achievement of an easy and reproducible ideal positioning of the orthodontic brackets.

Associations between continuous glucose monitoring (CGM) metrics and psycholinguistic measures: a correlational study.

AIM: Recently, the relationship between diabetes and mental health has been widely studied. With the advent of continuous glucose monitoring (CGM), some researchers have been interested in exploring the association between glucose-related metrics and psychological aspects. These studies have primarily relied on self-report questionnaires which present some limitations. Therefore, the present multicenter study aims at testing potential associations between CGM metrics and affective processes derived from narratives about using a CGM sensor. METHODS: An exploratory correlational design was used. Fifty-eight adults with type 1 diabetes using CGM were enrolled and invited to complete an online survey, where they replied to an open-ended question regarding their personal experience with the CGM sensor. Texts derived from the answers were analyzed through Linguistic Inquiry and Word Count, a widely used text analysis tool that can automatically identify and quantify linguistic patterns related to various psychological dimensions. Psycholinguistic measures were correlated with CGM metrics. RESULTS: Higher levels of sadness/depression correlated with lower %TIR (r = - 339; p < .01) and higher %TAR (r = .342; p < .01). CONCLUSIONS: The study highlights the relationship between CGM metrics and psychological variables derived from patients' narratives. In particular, it is possible to hypothesize a positive role of %TIR in reducing depressive feelings in individuals with diabetes, as well as a negative role of depressive feelings in achieving desirable CGM outcomes. Additionally, there is a potential role of glycemic variability, particularly hyperglycemia, in the expression of depressive and sad feelings, which has been less studied compared to the effects of hypoglycemia.

Health demand in primary care context: what do people think about physicians?

This research aims to explore the link between health demand and representation of medical function in a sample of 86 individuals (aged between 18 and 74) from Italy. A questionnaire has been administered for the analysis of cultural models (Carli & Paniccia 1999) in terms of affective symbolisations characterising physician-patient relationship. The questionnaire has been constructed according to a socio-constructivist methodology and allows to explore two specific emotional areas: (1) The view about medical profession and health care setting in general, (2) the experience referred to one's own general practitioner. Five clusters of subjects have been identified, thanks to multivariate statistic techniques (multiple correspondence analysis (MCA) and cluster analysis (CA). They show respectively: A deep concern for health and a paternalistic dynamics with physician (20.9% of the sample); a general distrust of the health service and a fatalistic view about health leading to avoid the use of visits (16.3%); a passive and dependent position in relation to physician seen as a skilled and powerful technician (20.9%); a little compliance with physician considered as a bureaucrat that must satisfy any request (20.9%); an active role in health management and a greater confidence in medical function for a better quality of life (20.9%). Results point out some differences by age, education and occupation. In particular, participants with university schooling (p < 0. 01) and professionals (p < 0. 05) show less motivation to use primary care services, while participants aged from 45 to 74 years (p < 0.05) and with elementary-middle schooling (p < 0.05) are more confident in medical function for health promotion. Findings suggest some indications on health demand and provide development lines for improving communication in primary care context.

Leaders' Role in Shaping Followers' Well-Being: Crossover in a Sample of Nurses.

The link between well-being at work and leadership has received considerable attention. Leaders have the power to influence followers not only due to formal position, but also their positive behaviors could reinforce the followers' positive working experience. Following the crossover model (Westman, 2001), this study investigates whether leaders' work-related positive psychological states (i.e., work engagement) cross over to those of the followers (i.e., work engagement and job satisfaction) through the mediation of the latter's perception of transformational leadership. We used MPlus 8 to test two multilevel mediations in a sample of 1505 nurses nested in 143 groups led by as many leaders (87.19% of nurses and 56.50% of head nurses of the entire population). Results show that while there is not a crossover of leader work engagement to nurse work engagement, manager work engagement can cross over to nurse job satisfaction, enhancing their well-being through transformational leadership behaviors. This study adds further insights both on crossover theory and on the importance of leaders in expanding and transferring resources to followers at work. Fostering work engagement at a managerial level in the healthcare sector could be the driver to facilitate the well-being of nurses at work, address negative outcomes, and promote positive ones.

"Don't Stop the Music," Please: The Relationship between Music Use at Work, Satisfaction, and Performance.

Although there are several studies in the literature that have examined how different types of music affect performance or other organisational outcomes, knowledge about how music affects individuals in the workplace is still limited, especially in terms of perceived music use. This study aims to examine the effects of three different uses of music-namely, emotional, cognitive, and background music-on individual perceptions of job satisfaction and performance. A sample of 244 workers from different backgrounds was included in the study. We tested a full structural equation model. The results show that (1) emotional use has a positive relationship to performance, both directly and indirectly through mediating job satisfaction; (2) cognitive use has no significant effect on satisfaction and performance (even indirectly); and (3) background use has a negative relationship to job satisfaction and no relationship to performance. This work suggests that listening to music during work activities could be a positive organisational practice. Future studies could further investigate the role of music listening as a resource, taking into account other personal and contextual characteristics.