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This paper investigates the impact of students' month of birth (MOB) on their university career choices. Specifically, we analyze whether the oldest students in their academic cohorts show more aspirational preferences when expressing their first choice of university degree. Using administrative records for students in a large university district and applying a sharp regression discontinuity design, we find that the oldest female students are more likely to express a preference for high-earning, academically selective, and STEM degrees than their youngest peers. The results for STEM are concentrated in degree courses where women are a minority and in the technology and engineering fields. Conversely, we find much smaller or non-significant MOB effects in most cases for male students. Results further indicate that the MOB effect is reinforced in families with high socioeconomic status.

Abstract Baryon number is an accidental symmetry of the Standard Model at the Lagrangian level. Its violation is arguably one of the most compelling phenomena predicted by physics beyond the Standard Model. Furthermore, there is a large experimental effort to search for it including the Hyper-K, DUNE, JUNO, and THEIA experiments. Therefore, an agnostic, model-independent, analysis of baryon number violation using the power of Effective Field Theory is very timely. In particular, in this work we study the contribution of dimension six and seven effective operators to |∆(B − L)| = 0, 2 nucleon decays taking into account the effects of Renormalisation Group Evolution. We obtain lower limits on the energy scale of each operator and study the correlations between different decay modes. We find that for some operators the effect of running is very significant.

Abstract This article presents the results of a study that evaluated VinclesBCN during COVID-19. This digital-based public social service aims to prevent loneliness and isolation in +65-year-old adults living in Barcelona. Through service user (N = 12) and professional (N = 6) interviews and a questionnaire with service users (N = 255), we demonstrate the pivotal role of digital connectedness in transforming VinclesBCN into a lifeline during the pandemic. The analysis revealed the importance of sociability, social support, and, especially, entertainment in coping with pandemic fatigue and facilitating social connectivity and support among users. Users engaged in activities such as sharing images, songs, memes, and daily greetings to provide proximity, sociability, and care among users, whether they belonged to preexisting groups or were newly introduced to the platform. It also facilitated the identification of individuals who needed companionship, comfort, or more specialized support. The findings emphasize the significance of entertainment as a resilience-building strategy during times of uncertainty. Despite the positive impact, not all users equally used the platform. Non-use was strongly associated with being a woman, having a low educational level, having preexisting social relationships, less time of enrolment in the platform, as well as a high perception of loneliness, poor self-reported health, and low mood. The article underscores the need for further research into older adults’ digital engagement during crises, its role in building resilience, and advocating for inclusive digital interventions that take into account diverse older adults’ needs and experiences in crisis contexts.

Energy poverty (EP) is becoming an increasingly important problem in the urban contexts of southern Europe. In Barcelona, EP indicators are higher than those of the European Union and are strongly associated with poor health status and high use of health services and medication, becoming a major public health problem. EP is unevenly distributed in the population of Barcelona, according to axes of social stratification. However, its geographic distribution at the small-area level remains unknown because it cannot be directly estimated with the available information sources and commonly used methods. Therefore, the aim of this study was to analyze geographical inequalities in EP in Barcelona by estimating reliable small-area EP indicators and a composite indicator (index). We used a novel method that allowed us to obtain 6 EP indicators for the 73 Barcelona neighborhoods and an EP index from a principal component analysis of these indicators. We found major geographical inequalities in the distribution of EP in Barcelona. Many neighborhoods had significantly higher EP than the city average, and these areas made up 3 well-defined spatial clusters. Therefore, the estimated small-area indicators and index allowed identification of the most affected neighborhoods. These results indicate the need to prioritize these areas for local interventions to alleviate EP, and could also be used for policy making.

Purpose – The autonomous governments of two regions in Spain established mobile bans in schools as of the year 2015. Exploiting the across-region variation introduced by such a quasi-natural experiment, this study aims to perform a comparative-case analysis to investigate the impact of this non-spending-based policy on regional Programme for International Student Assessment (PISA) scores in maths and sciences and bullying incidence. Design/methodology/approach – The authors apply the synthetic control method and diff-in-diff estimation to compare the treated regions with the rest of regions in Spain before and after the intervention. Findings – The results show noticeable reductions of bullying incidence among teenagers in the two treated regions. The authors also find positive and significant effects of this policy on the PISA scores of the Galicia region that are equivalent to 0.6–0.8 years of learning in maths and around 0.72 to near one year of learning in sciences. Originality/value – To the best of the author’s knowledge, this is the first empirical study analysing the impact of mobile phone bans in schools on bullying cases, exploiting variation across regions (or other units), years and age intervals. Besides, the scarce formal evidence that exists on the consequences of the mobile phones use in students’ academic achievement comes from a micro perspective, while the paper serves as one more piece of evidence from a macro perspective.

Abstract We study the relic abundance of several stable particles from a generic dark sector, including the possible presence of dark asymmetries. After discussing the different possibilities for stabilising multi-component dark matter, we analyse the final relic abundance of the symmetric and asymmetric dark matter components, paying special attention to the role of the unavoidable conversions between dark matter states. We find an exponential dependence of the asymmetries of the heavier components on annihilations and conversions. We conclude that having similar symmetric and asymmetric components is a natural outcome in many scenarios of multi-component dark matter. This has novel phenomenological implications, which we briefly discuss.

Background: Prenatal exposure to endocrine-disrupting chemicals (EDCs) may disrupt normal fetal and postnatal growth. Studies have mainly focused on individual aspects of growth at specific time points using single chemical exposure models. However, humans are exposed to multiple EDCs simultaneously, and growth is a dynamic process. Objective: The objective of this study was to evaluate the associations between prenatal exposure to EDCs and children's body mass index (BMI) growth trajectories using single exposure and mixture modeling approaches. Methods: Using data from the INfancia y Medio Ambiente (INMA) Spanish birth cohort (n = 1,911), prenatal exposure to persistent chemicals [hexachlorobenzene (HCB), 4-4'-dichlorodiphenyldichloroethylene (DDE), polychlorinated biphenyls (PCB-138, -150, and -180), 4 perfluoroalkyl substances (PFAS)] and nonpersistent chemicals (8 phthalate metabolites, 7 phenols) was assessed using blood and spot urine concentrations. BMI growth trajectories were calculated from birth to 9 years of age using latent class growth analysis. Multinomial regression was used to assess associations for single exposures, and Bayesian weighted quantile sum (BWQS) regression was used to evaluate the EDC mixture's association with child growth trajectories. Results: In single exposure models exposure to HCB, DDE, PCBs, and perfluorononanoic acid (PFNA) were associated with increased risk of belonging to a trajectory of lower birth size followed by accelerated BMI gain by 19%-32%, compared with a trajectory of average birth size and subsequent slower BMI gain [e.g., relative risk ratio (RRR) per doubling in DDE concentration = 1.19 (95% CI: 1.05, 1.35); RRR for PFNA= 1.32 (95% CI: 1.05, 1.66)]. HCB and DDE exposure were also associated with higher probability of belonging to a trajectory of higher birth size and accelerated BMI gain. Results from the BWQS regression showed the mixture was positively associated with increased odds of belonging to a BMI trajectory of lower birth size and accelerated BMI gain (odds ratio per 1-quantile increase of the mixture = 1.70; credible interval: 1.03, 2.61), with HCB, DDE, and PCBs contributing the most. Discussion: This study provides evidence that prenatal EDC exposure, particularly persistent EDCs, may lead to BMI trajectories in childhood characterized by accelerated BMI gain. Given that accelerated growth is linked to a higher disease risk in later life, continued research is important. https://doi.org/10.1289/EHP11103, Introduction Infant and early childhood growth and adiposity status are important factors in promoting healthy childhood development and well-being during adulthood. (1) Children with overweight or obesity are more likely [...]

Green Chemistry can be defined as the design of processes that reduce or eliminate hazardous substances and are described by the 12 Principles of Green Chemistry (PGCs). The PGCs provides a guide of the green characteristics that a chemical process should fulfill. However, the evaluation is complicated without an adequate metric that provides the possibility to convert the characteristics of the method to an objective scale level, such as a number or a color. For this purpose, green metrics have been developed in order to do a comprehensive evaluation of the method greenness. The older systems were based on atomic efficiency or mass of generated waste, but those are not adequate for all the chemistry branches, especially on Analytical Chemistry. Hence, a series of novel metrics, such as National Environmental Methods Index, Eco-Scale, Green Analytical Procedure Index, RGB model, Hexagon or Analytical GREEnness metric approach has appeared. Regarding Analytical Chemistry, especially in the sample preparation field, a novel trend based on the use of 3D printing devices has emerged. The different 3D printing modes offer the possibility to prepare devoted devices that affects the miniaturization, automation, reduction of solvents and can be prepared in short times with low energy. Therefore, 3D printing could offer novel alternatives in the preparation of Green Analytical Chemistry methods. In this work, the six mentioned metrics were used to evaluate the greenness of 11 published works that perform sample preparation using 3D printed devices. The results of each metric have been discussed and a comparison of all metrics has been done. The most adequate methodology for the evaluation was the Analytical GREEnness metric approach which was used to compare the greenness level of one of the selected works with a work using more conventional materials and systems. These results demonstrate the capabilities of 3D printing to help in the development of novel Green Analytical Chemistry methods.

Objective Research on adults has identified an immigrant health advantage, known as the ‘immigrant health paradox’, by which migrants exhibit better health outcomes than natives. Is this health advantage transferred from parents to children in the form of higher birth weight relative to children of natives?Setting Western Europe and Australia.Participants We use data from nine birth cohorts participating in the LifeCycle Project, including five studies with large samples of immigrants’ children: Etude Longitudinale Française depuis l’Enfance—France (N=12 494), the Raine Study—Australia (N=2283), Born in Bradford—UK (N=4132), Amsterdam Born Children and their Development study—Netherlands (N=4030) and the Generation R study—Netherlands (N=4877). We include male and female babies born to immigrant and native parents.Primary and secondary outcome measures The primary outcome is birth weight measured in grams. Different specifications were tested: birth weight as a continuous variable including all births (DV1), the same variable but excluding babies born with over 4500 g (DV2), low birth weight as a 0–1 binary variable (1=birth weight below 2500 g) (DV3). Results using these three measures were similar, only results using DV1 are presented. Parental migration status is measured in four categories: both parents natives, both born abroad, only mother born abroad and only father born abroad.Results Two patterns in children’s birth weight by parental migration status emerged: higher birth weight among children of immigrants in France (+12 g, p

Resumen: Introducción: La reincorporación deportiva es posiblemente el objetivo principal para el paciente tras la cirugía reconstructiva de ligamento cruzado anterior (LCA). El propósito del presente estudio fue determinar la preparación psicológica para la reincorporación deportiva de una cohorte de deportistas aficionados tratados mediante cirugía reconstructiva de LCA. Material y método: Estudio retrospectivo de una base de datos prospectiva de pacientes con rotura de LCA intervenidos entre enero y diciembre de 2017. La preparación psicológica del paciente para la reincorporación deportiva se valoró al final del seguimiento según la versión corta de la escala Anterior Cruciate Ligament Return to Sport After Injury (ACL-RSI). Resultados: Se incluyeron en el estudio 43 pacientes con una edad media de 24,7 años. El seguimiento medio de los pacientes fue de 32,5 meses. Todos los pacientes practicaban algún tipo de actividad deportiva al final del seguimiento. La puntuación media en la escala ACL-RSI fue de 71,5 puntos. El miedo a lesionarse nuevamente al practicar deporte persistía en 14 pacientes (32,5%). Veinticuatro pacientes (55,8%) indicaron que no practicaban deporte al mismo nivel que antes de la lesión ligamentosa. La puntuación media en la escala ACL-RSI fue significativamente menor en este grupo de pacientes (59,7 vs. 87,3; p

Health surveys allow exploring health indicators that are of great value from a public health point of view and that cannot normally be studied from regular health registries. These indicators are usually coded as ordinal variables and may depend on covariates associated with individuals. In this article, we propose a Bayesian individual‐level model for small‐area estimation of survey‐based health indicators. A categorical likelihood is used at the first level of the model hierarchy to describe the ordinal data, and spatial dependence among small areas is taken into account by using a conditional autoregressive distribution. Post‐stratification of the results of the proposed individual‐level model allows extrapolating the results to any administrative areal division, even for small areas. We apply this methodology to describe the geographical distribution of a self‐perceived health indicator from the Health Survey of the Region of Valencia (Spain) for the year 2016. [ABSTRACT FROM AUTHOR]

This paper engages in a reflection about the use of social media to carry out fieldwork online for contemporary ethnography. The reflection is based on the ethnographer's experiences of discomforts and affects in digital fieldwork, in which she used her own social media accounts to interact with the interlocutors recruited for the project as a means to create reciprocity with them. This article uses these discomforts as generators of ethical, epistemological and political reflections by discussing the positionality of the ethnographer in a digital fieldwork. Firstly, it delves into the potential of these discomforts as a reflective tool for knowledge generation. It also reflects on the power dynamics consequence of the position that the anthropologist occupies in the field. Finally, the article initiates a political reflection on academic life when extensive exposure to fieldwork breaks down the boundaries between work and personal life. [ABSTRACT FROM AUTHOR]

Older adults are increasingly using smartphones. Researchers have identified demographic, attitudinal factors and social outcomes related to inequalities in access, skills, and activities of internet use. While this research has been ongoing for years, studies about the digital inequalities related to the use of smartphones by older adults are still scarce, and they rarely have undertaken sociocultural comparisons of usage. This article builds on an analysis of tracking data of older adults’ (pp. 55–79) smartphone use, to explore digital inequalities around traditional axes of inequality and sociocultural factors that shape older adults’ smartphone use. It adds a comparative perspective for understanding emerging inequalities related to sociocultural contexts to the existing literature. The results show that differences cannot be explained solely by sociodemographic factors, but also possibly by national policies and culture. Particularly, age, on its own, is not able to explain the differences reported. Older adults engage in a range of different activities on their smartphones, and differences between groups across the traditional axes of inequalities do not mirror exactly the differences found in previous research on internet use. This is important considering the risk of emerging new inequalities and the ongoing revisiting of policies to mitigate them.