On the evolution of the entropy and pressure profiles in X-ray luminous galaxy clusters at z > 0.4

Galaxy clusters are the most recent products of hierarchical accretion over cosmological scales. The gas accreted from the cosmic field is thermalized inside the cluster halo. Gas entropy and pressure are expected to have a self-similar behaviour with their radial distribution following a power law and a generalized Navarro-Frenk-White profile, respectively. This has been shown also in many different hydrodynamical simulations. We derive the spatially-resolved thermodynamical properties of 47 X-ray galaxy clusters observed with Chandra in the redshift range 0.4 < z < 1.2, the largest sample investigated so far in this redshift range with X-rays spectroscopy, with a particular care in reconstructing the gas entropy and pressure radial profiles. We search for deviation from the self-similar behaviour and look for possible evolution with redshift. The entropy and pressure profiles lie very close to the baseline prediction from gravitational structure formation. We show that these profiles deviate from the baseline prediction as function of redshift, in particular at z > 0.75, where, in the central regions, we observe higher values of the entropy (by a factor of 2.2) and systematically lower estimates (by a factor of 2.5) of the pressure. The effective polytropic index, which retains informations about the thermal distribution of the gas, shows a slight linear positive evolution with the redshift and the concentration of the dark matter distribution. A prevalence of non-cool-core, disturbed systems, as we observe at higher redshifts, can explain such behaviours.Comment: 14 pages, 18 figures, accepted for publication by A&

Lo stigma anti-transgender da una prospettiva ecologico-sociale: Effetti sulla salute psico-fisica e strategie di intervento

The present study offers an overview on stigma against transgender people, analyzing its effects on physical and psychological well-being. We adopted a socio-ecological perspective, according to which antitransgender stigma may manifest at different levels: along the environment-individual spectrum, stigma may occur at the institutional, interpersonal and individual level. All these typologies make transgender people a very vulnerable group, at risk for several health problems. Authors will finally overview some specific psycho-social interventions aimed at reducing stress, by matching each level of stigma with internationally well-established good practices

Intraguild interactions between two egg parasitoids of a true bug in semi-field and field conditions

Research on interspecific competitive interactions among insect parasitoids has often been characterized by laboratory studies in which host insects are exposed to female parasitoids of different species in various sequences and combinations. In the last years, an increasing number of studies have investigated interspecific interactions under field and semi-field conditions although just a few number of works focused on egg parasitoids. In this work, we undertook a two-year study to investigate interspecific interactions between Trissolcus basalis (Wollaston) (Hymenoptera: Platygastridae) and Ooencyrtus telenomicida (Vassiliev) (Hymenoptera: Encyrtidae), two egg parasitoids of the pest Nezara viridula (L.) (Heteroptera: Pentatomidae) that co-occur in cultivated crops. Under semi-field (in out-door mesh cages) and field conditions, we investigated: 1) the seasonal occurrence of competing parasitoid species on sentinel egg masses; 2) the impact achieved by competing species on the shared host on naturally laid egg masses; 3) the outcome of intraguild interactions under controlled conditions. Results from sentinel egg masses showed that T. basalis occurs in May and successfully parasitizes hosts until the end of September/beginning of October, whereas O. telenomicida is mainly occurring in July-August. In both years, it was found that T. basalis is predominant. From naturally laid egg masses, results indicated that T. basalis achieves higher impact on the hosts, even in those egg masses which are parasitized by more than one female of different species ( = multiparasitism). Results from manipulating intraguild interactions showed that T. basalis achieves higher impact on N. viridula when released alone, but it suffers from competition with O. telenomicida. The ecological factors that play a role in intraguild interactions in the context of biological control perspective are discussed

“Soccer is a matter of real men?” Sexist and homophobic attitudes in three Italian soccer teams differentiated by sexual orientation and gender identity

During the 1980s and early 1990s, homophobia and sexism were pervasive in sport contexts due to their sex-segregation, male-domination, and heteronormative culture. In the last two decades, a change in attitudes toward gender and sexuality, in particular within typically masculine sports, has been observed. Notwithstanding that, no research assessing if this change also occurred in Italy was conducted. Using semi-structured focus groups and adopting the framework of Inclusive Masculinity Theory, the current study explored sexist and homophobic attitudes in three Italian soccer teams differentiated by gender and sexual orientation. Team 1 comprised openly gay male athletes, Team 2 comprised both lesbian and heterosexual women, and Team 3 comprised heterosexual men. Narratives were analysed through constant comparison analysis. Specific macro-categories were identified in each team, as follows: Team 1: need for affiliation, in/visibility, perceived homophobia, and perceived institutionalised homophobia; Team 2: need for affiliation, masculine dominance, equal opportunities, and crossing gender boundaries; and Team 3: presumption of heterosexuality, female inferiority, and tendency toward a homosocial law. The results suggest that soccer, in Italy, still represents a context organised around men’s dominance over women and the stigmatisation of gay men. Notwithstanding, they suggest also that we are witnessing an interlocutory phase where some heterosexual soccer players are starting to challenge homophobia but, at the same time, women and openly gay players still perceive a homohysteric culture. The discussion is contextualised in the social context where discourses arose

Effective resolution concepts for lidar observations

Abstract. Since its establishment in 2000, EARLINET (European Aerosol Research Lidar NETwork) has provided, through its database, quantitative aerosol properties, such as aerosol backscatter and aerosol extinction coefficients, the latter only for stations able to retrieve it independently (from Raman or high-spectral-resolution lidars). These coefficients are stored in terms of vertical profiles, and the EARLINET database also includes the details of the range resolution of the vertical profiles. In fact, the algorithms used in the lidar data analysis often alter the spectral content of the data, mainly acting as low-pass filters to reduce the high-frequency noise. Data filtering is described by the digital signal processing (DSP) theory as a convolution sum: each filtered signal output at a given range is the result of a linear combination of several signal input data samples (relative to different ranges from the lidar receiver), and this could be seen as a loss of range resolution of the output signal. Low-pass filtering always introduces distortions in the lidar profile shape. Thus, both the removal of high frequency, i.e., the removal of details up to a certain spatial extension, and the spatial distortion produce a reduction of the range resolution. This paper discusses the determination of the effective resolution (ERes) of the vertical profiles of aerosol properties retrieved from lidar data. Large attention has been dedicated to providing an assessment of the impact of low-pass filtering on the effective range resolution in the retrieval procedure

Group psychodynamic counselling with final-year undergraduates in clinical psychology: A clinical methodology to reinforce academic identity and psychological well-being

Educational institutions should ensure that students develop a professional identity, as well as safeguarding their well-being and activating awareness and change processes. The aim of this study was to assess the efficacy of group psychodynamic counselling as a means of reinforcing academic identity–considered the forerunner of professional identity–and psychological well-being in a group of final-year undergraduates studying clinical psychology. Thirty-three final-year-students of clinical psychology who participated in six group psychodynamic counselling sessions were compared with sixteen final-year students of clinical psychology who had never participated in an intervention of this kind. The results suggested that group psychodynamic counselling made students feel more capable of managing their lives and more open to new experiences as well as encouraging them to perceive their relationships as more positive and satisfying, to believe that their life is meaningful, and to achieve greater self-acceptance. The in-depth exploration also prompted students to consider their commitment to their choice of career. Group psychodynamic counselling also reinforced students’ educational choice, as the likelihood of students becoming less committed to this choice was reduced after the intervention. Thus, the study confirmed the efficacy of group psychodynamic counselling as a means of reinforcing both academic identity and promoting well-being and demonstrated that it is a tool clinical psychologists and university teachers could use to activate self-reflection and change within educational settings

La salute degli anziani LGBT dalla prospettiva del minority stress. Rassegna della letteratura e raccomandazioni di ricerca

Lesbian, gay, bisexual, and transgender (LGBT) older adults have not received proper attention by the scientific literature and gerontology research, especially in Italy. This lack represents only an aspect of a more general condition of social invisibility that weighs on this population. The present contribution aims to provide researchers and clinicians with a review of scientific works which, especially in the USA, have casted light on experiences of stigmatization, discrimination, and victimization experienced and perceived by this population. The theoretical framework is represented by the minority stress perspective which provides an overview of risk and protective factors related to physical and mental health of minority groups. In the current review, authors considered studies conducted through quantitative, qualitative, and mixed methods, starting from 2000. Following the above described perspective, results are presented in two sections: the first one is focused on the different forms of stigma which weigh on LGBT older adults and the second one on the mental and physical health outcomes and on protective factors. The application of the minority stress perspective on LGBT older adults provides researchers and social and health care system providers with a psychosocial and clinical framework through which reading the phenomenon. Finally, main research recommendations are discussed

A fast Reoptimization approach for the dynamic technician routing and scheduling problem

The Technician Routing and Scheduling Problem (TRSP) consists in routing staff to serve requests for service, taking into account time windows, skills, tools, and spare parts. Typical applications include maintenance operations and staff routing in telecoms, public utilities, and in the health care industry. In this paper we tackle the Dynamic TRSP (D-TRSP) in which new requests appear over time. We propose a fast reoptimization approach based on a parallel Adaptive Large Neighborhood Search (RpALNS) able to achieve state-of-the-art results on the Dynamic Vehicle Routing Problem with Time Windows. In addition, we solve a set of randomly generated D-TRSP instances and discuss the potential gains with respect to a heuristic modeling a human dispatcher solution

Group psychodynamic counselling as a clinical training device to enhance metacognitive skills and agency in future clinical psychologists

Metacognitive skills and agency are among the main psychological abilities a clinical psychologist should have. This study aimed to assess the efficacy of group psychodynamic counselling as a clinical training device able to enhance metacognitive skills and agency in final-year undergraduates in clinical psychology within an educational context. Thirty-three final-year students of clinical psychology participated in an experiential laboratory lasting two months. Participants completed measures regarding metacognitive skills and agency at pre-, posttreatment, and 3-month follow-up assessment. The results suggested that group psychodynamic counselling made students feel more capable of recognizing emotional states, understanding causal relationships, inferring mental states of others in terms of beliefs, desires, intentions, and expectations, and thinking critically. Furthermore, the group psychodynamic counselling helped students to feel more able to derive pathways to desired goals and to motivate themselves via agency thinking to use those pathways. Thus, the study confirmed the efficacy of group psychodynamic counselling as a clinical training device able to enhance metacognitive skills and agency in future clinical psychologists