Traces of Lorentz symmetry breaking in a Hydrogen atom at ground state

Some traces of a specific Lorentz symmetry breaking scenario in the ground state of the Hydrogen atom are investigated. It is used standard Rayleigh-Schr\"odinger perturbation theory in order to obtain the corrections to the the ground state energy and wave function. It is shown that an induced four-pole moment arises, due to the Lorentz symmetry breaking. The model considered is the one studied in reference Eur. Phys. J. C {\bf 74}, 2937 (2014), where the Lorentz symmetry is broken in the electromagnetic sector.Comment: 8 Latex pages, 2 figure

Village economies and the structure of extended family networks

This paper documents how the structure of extended family networks in rural Mexico relates to the poverty and inequality of the village of residence. Using the Hispanic naming convention, we construct within-village extended family networks in 504 poor rural villages. Family networks are larger (both in the number of members and as a share of the village population) and out-migration is lower the poorer and the less unequal the village of residence. Our results are consistent with the extended family being a source of informal insurance to its members

Family networks and school enrolment: evidence from a randomized social experiment

We present evidence on whether and how a household’s behavior is influenced by the presence and characteristics of its extended family. Using data from the PROGRESA program in Mexico, we exploit information on the paternal and maternal surnames of heads and spouses in conjunction with the Spanish naming convention to identify the inter and intra generational family links of each household to others in the same village. We then exploit the randomized research design of the PROGRESA evaluation data to identify whether the treatment effects of PROGRESA transfers on secondary school enrolment vary according to the characteristics of extended family. We find PROGRESA only raises secondary enrolment among households that are embedded in a family network. Eligible but isolated households do not respond. The mechanism through which the extended family influences household schooling choices is the redistribution of resources within the family network from eligibles that receive de facto unconditional cash transfers from PROGRESA, towards eligibles on the margin of enrolling children into secondary school

New records of bryophytes for Pernambuco State, Brazil

The known geographical distribution of 12 bryophyte species is extended by confirmation of their presence in the state of Pernambuco. Leptoscyphus porphyrius (Nees) Grolle, Harpalejeunea uncinata Steph., Chryso-hypnum diminutivum (Hampe) Buck and Porotrichum korthalsianum (Dozy & Molk.) Mitt. are new to northeastern Brazil. The material studied was collected in remnants of Atlantic Forest situated at altitudes of 100-1.100m. The principal taxonomic characteristics are cited, with ecological and distributional commentary provided.A distribuição geográfica conhecida de 12 espécies de briófitas é ampliada, com o registro de sua ocorrência no estado de Pernambuco. Leptoscyphus porphyrius (Nees) Grolle, Harpalejeunea uncinata Steph., Chryso-hypnum diminutivum (Hampe) Buck e Porotrichum korthalsianum (Dozy & Molk.) Mitt. constituem-se novas referências para a região Nordeste. O material estudado foi coletado em remanescentes da Floresta Atlântica, situados de 100 a 1.100m de altitude. Faz-se referência às principais características taxonômicas do material, bem como, breves comentários ecológicos e de distribuição geográfica

Family Networks and School Enrolment: Evidence from a Randomized Social Experiment

We present evidence on whether and how a household's behavior is influenced by the presence and characteristics of its extended family. Using data from the PROGRESA program in Mexico, we exploit information on the paternal and maternal surnames of heads and spouses in conjunction with the Spanish naming convention to identify the inter and intra generational family links of each household to others in the same village. We then exploit the randomized research design of the PROGRESA evaluation data to identify whether the treatment effects of PROGRESA transfers on secondary school enrolment vary according to the characteristics of extended family. We find PROGRESA only raises secondary enrolment among households that are embedded in a family network. Eligible but isolated households do not respond. The mechanism through which the extended family influences household schooling choices is the redistribution of resources within the family network from eligibles that receive de facto unconditional cash transfers from PROGRESA, towards eligibles on the margin of enrolling children into secondary school.extended family network, PROGRESA, resource sharing, schooling

Extended Family Networks in Rural Mexico: A Descriptive Analysis

We provide descriptive evidence on the characteristics of a household’s extended family network using data from the Progresa social assistance program in rural Mexico. We exploit information on the paternal and maternal surnames of household heads and their spouses and the patronymic naming convention to identify the inter and intra generational family links of each household to others in the village. This provides an almost complete mapping of extended family networks structures across 506 Mexican villages, covering 22,000 households and over 130,000 individuals. We then provide evidence on – (i) whether husbands and wives differ in the extent to which members of their extended family are located in geographic proximity; (ii) the characteristics that predict the existence of extended family links; (iii) the similarity of households within the same family network in terms of their poverty, and how this differs within and between generations of the extended family.extended family network, Progresa

Village Economies and the Structure of Extended Family Networks

This paper documents how the structure of extended family networks in rural Mexico relates to the poverty and inequality of the village of residence. Using the Hispanic naming convention, we construct within-village extended family networks in 504 poor rural villages. Family networks are larger (both in the number of members and as a share of the village population) and out-migration is lower the poorer and the less unequal the village of residence. Our results are consistent with the extended family being a source of informal insurance to its members.extended family network, migration, village inequality, village marginality

Ensino de História: temporalidade, pós-verdade e verdade poética

Listening to undergraduate students in the 4 supervised internships available at the Department of History of the Federal University of Ouro Preto (UFOP), I have noticed that 2 themes frequently appear and reappear: a) a certain lack of interest, at least initially, of basic education students in the past, in history, and in History teaching, especially with regard to a specific way of relating to the past times: the epistemological-critical-pragmatic; and also b) a certain questioning by the students (sometimes even more energetic/violent) of certain interpretations proposed by teachers. We have been thinking about these challenges throughout our courses, so this article addresses part of our discussions on the themes of temporality and post-truth, especially concerning a certain lack of interest in history and the History teaching. And, finally, we thematize an epistemological behavior through which a certain re-enchantment of history and History teaching could be possible, what I call poetic truth. Keywords: temporality; post-truth; poetic truth.  Ouvindo alunos da graduação nos 4 estágios supervisionados que temos no departamento de História da Universidade Federal de Ouro Preto (UFOP), percebi que 2 temas têm aparecido e retornado com frequência: a) certo desinteresse, ao menos inicial, dos estudantes do ensino básico pelo passado, pela história e pelo ensino de História, especialmente no que diz respeito a um modo específico de relacionamento com passados: o epistemológico-crítico-pragmático; e, também, b) certo questionamento dos alunos (às vezes até mais enérgico/violento) de determinadas interpretações propostas pelos professores. Temos pensado sobre esses desafios ao longo de nossos cursos, de modo que este artigo aborda parte de nossas discussões sobre as questões da temporalidade e da pós-verdade, especialmente naquilo que diz respeito a certo desinteresse pela história e pelo ensino de história. E, por fim, tematizamos um comportamento epistemológico a partir do qual seria possível certo reencantamento da história e do ensino de História, o que denomino verdade poética. Palavras-chave: temporalidade; pós-verdade; verdade poética

INTEGRATION OF THE HUMAN RESOURCES PROFESSIONAL IN A SCHOOL CONTEXT

Objective: The objective of this study is to investigate the integration of Human Resources professionals in a school context, to understand their role, challenges, and impact on the institution's overall performance and culture.   Theoretical Framework: In this topic, the main concepts and theories that underpin the research are presented. Maslow's Hierarchy of Needs stands out, providing a solid basis for understanding the context of the investigation.   Method: The methodology adopted for this research comprises a mixed-methods approach, combining qualitative and quantitative data collection. Participants include teachers, HR professionals, and administrative staff from the educational institution. Data collection was carried out through surveys, interviews, and observations.   Results and Discussion: The results obtained revealed that integrating Human Resources management significantly improved student retention rates and overall organizational climate. Enhanced engagement among staff and successful implementation of new initiatives were key outcomes. In the discussion section, these results are contextualized in light of Maslow's Hierarchy of Needs, emphasizing how addressing employees' needs and motivations contributed to these improvements. The implications of these findings suggest that strategic People Management can drive both employee satisfaction and institutional growth. Possible discrepancies, such as varying levels of implementation success across different departments, and limitations, such as the short duration of the study, are also considered in this section.   Research Implications: The practical and theoretical implications of this research provide valuable insights into how the results can influence practices in Human Resources and organizational management. The findings suggest improved Human Resources practices by highlighting the effective integration of HR professionals into management roles. They offer new strategies for enhancing employee engagement and motivation and contribute to better organizational development by addressing challenges unique to educational institutions. Additionally, the research guides leadership development, emphasizing its crucial role in driving organizational success. These implications reflect how the study’s results can impact both theoretical frameworks and practical applications in these fields.   Originality/Value: This study contributes to the literature by offering an innovative approach to integrating Human Resources professionals within educational institutions, a relatively underexplored area. By providing new insights into how HR management can enhance organizational performance and employee engagement, it introduces practical contributions that bridge theoretical frameworks and real-world applications. The relevance and value of this research are evidenced by its potential to impact the field of Human Resources and educational management. The results may influence practices by demonstrating effective strategies for improving organizational climate, staff retention, and overall institutional success, thereby offering a valuable model for similar organizations seeking to optimize their HR functions

The twelfth player: how FIFA challenges host states’ sovereignty. The case of the 2014 Brazil World Cup

http://www.ester.ee/record=b4684508*es