Ferromagnetic models for cooperative behavior: Revisiting Universality in complex phenomena

Ferromagnetic models are harmonic oscillators in statistical mechanics. Beyond their original scope in tackling phase transition and symmetry breaking in theoretical physics, they are nowadays experiencing a renewal applicative interest as they capture the main features of disparate complex phenomena, whose quantitative investigation in the past were forbidden due to data lacking. After a streamlined introduction to these models, suitably embedded on random graphs, aim of the present paper is to show their importance in a plethora of widespread research fields, so to highlight the unifying framework reached by using statistical mechanics as a tool for their investigation. Specifically we will deal with examples stemmed from sociology, chemistry, cybernetics (electronics) and biology (immunology).Comment: Contributing to the proceedings of the Conference "Mathematical models and methods for Planet Heart", INdAM, Rome 201

Variability of cranial morphometrical traits in Suffolk Down Sheep

The widespread use of measures and indices associated with the head for racial analysis suggests that such measures have a strong relationship with the underlying bone structure. Few studies analyse the variability of the bones of the head and the relationship with their external expression. The objective of this work was to identify and measure the magnitudes of the main skull parameters in Suffolk Down adult sheep. This study was carried out on sixteen adult Suffolk Down sheep skulls at INIA Butalcura. Their skeletons were obtained and digital morphometry was performed. Each skull was photographed from dorsal, ventral, lateral and nuchal views with a total of 28 parameters evaluated (10 dorsal, 5 ventral, 6 lateral and 6 nape). The results indicate that the externally observable variability in the cranial zone of a sheep cannot be extrapolated to the rest of the bony components of the cranial zone, either in length, width or height. It was observed that the variability of a cephalic dimension can be contrasted with the variability of individual bones that participate in a certain dimension as part of a plasticity adjustment mechanism independent of the genetic variability of each bone separately. The cranial dimensions are still useful in defining the productive potential of a sheep population; however, they should be taken cautiously for racial definitions, where the individual variability of the bones could be a better reflection of the genetic structure of the population and the dimensionality could be biased by adaptive plasticity

How glassy are neural networks?

In this paper we continue our investigation on the high storage regime of a neural network with Gaussian patterns. Through an exact mapping between its partition function and one of a bipartite spin glass (whose parties consist of Ising and Gaussian spins respectively), we give a complete control of the whole annealed region. The strategy explored is based on an interpolation between the bipartite system and two independent spin glasses built respectively by dichotomic and Gaussian spins: Critical line, behavior of the principal thermodynamic observables and their fluctuations as well as overlap fluctuations are obtained and discussed. Then, we move further, extending such an equivalence beyond the critical line, to explore the broken ergodicity phase under the assumption of replica symmetry and we show that the quenched free energy of this (analogical) Hopfield model can be described as a linear combination of the two quenched spin-glass free energies even in the replica symmetric framework

The new faces of informality in the Central Region of Goiania-Go : the ambulant workers in a context of transformation of the work trade

Orientador: Angela Maria Carneiro AraujoTese (doutorado) - Universidade Estadual de Campinas, Instituto de Filosofia e Ciencias HumanasResumo: As transformações no mundo do trabalho nos anos 70 e, sobretudo, a partir dos 80 e 90, resultaram em uma crise do fordismo e na consolidação de novas tendências no mundo do trabalho, caracterizadas por processos de redução do número de operários (trabalhadores industriais tradicionais), aumento da terceirização, heterogeneização crescente com a ampliação de mulheres operárias e intensificação da proletarização, caracterizada pelas novas modalidades contratuais que implicam em empregos precários e em tempo parcial. De modo geral, a literatura especializada tem apontado para o fato de que um dos principais impactos da reestruturação produtiva na dinâmica do mercado de trabalho e no cotidiano de vida dos trabalhadores é a crise do ¿trabalho protegido¿ e suas interfaces com o crescimento das atividades ¿informais¿. Nesse sentido, a grande questão que conduziu esta pesquisa se expressa nas seguintes inquietações: estão ocorrendo mudanças na informalidade da região central de Goiânia em função desse quadro de transformações? Em caso positivo, o que há de novo nessa nova informalidade? O que muda no perfil dos ambulantes? Quais novos processos caracterizariam sua inserção na economia? Como as mudanças produtivas, associadas às novas tecnologias, as têm afetado? A crise do emprego, a reestruturação produtiva e a precarização do mercado de trabalho formal contribuem para a constituição de uma nova heterogeneidade? Ainda, o que há de novo na relação desse setor informal da região central de Goiânia-GO com o poder público a partir dos anos 80 e 90?Abstract: The transformations in the world of the work in the 70s and, over all, from the 80s and 90s, had resulted in a crisis of the ¿Fordism¿ and in the consolidation of new trends in the world of the work, characterized by processes of reduction of the number of laborers (traditional industrial workers), increase of the outsourcing process, increasing heterogeneity with the magnifying of women in labor and intensifying of the proletariat process, characterized by the new contractual modalities that imply in precarious jobs and partial time. In a general way, the specialized literature has pointed to the fact that one of the main impacts of the productive reorganization in the dynamics of the work trade and in the daily life of the workers is the crisis of the "protecting work" and its interfaces with the growth of "the informal" activities. In this direction, the great question that leads this research expresses itself in the following fidgets: are changes in the informality of the central region of Goiânia occurring in function of this kind of transformations? In positive case, what is new in this new informality? What does it change in the profile of the ambulant ones? What would new processes characterize their insertion in the economy? How have the productive changes, associated to the new technologies, affected them? Do the crisis of the job, the productive reorganization and the precarious conditions of the formal work trade contribute for the constitution of a new heterogeneity? And, what is new in the relation of this informal sector of the central region of Goiânia-GO with the public power from the 80s and 90s?DoutoradoDoutor em Ciências Sociai

Vivências de sofrimento e adoecimento em ambiente de trabalho: uma análise do cotidiano profissional de enfermeiras e enfermeiros num contexto pandêmico em dois centros de referência no atendimento a pacientes de Covid-19

Este artigo promove um debate que orbita em torno de conceitos, tais como: risco e sofrimento; subjetividade e experiência; cotidiano e memória; vulnerabilidade e precarização. Buscamos compreender as vivências em ambiente de trabalho de enfermeiros e enfermeiras que atuam desde o início da pandemia de Covid-19 (Coronavirus Disease 2019) em dois hospitais públicos de Goiânia, referências no atendimento a indivíduos vitimados pela doença em questão. Destacamos que a realização das entrevistas teve como pano de fundo um contexto de aprofundamento da precarização e da flexibilização das condições e relações de trabalho desses profissionais, associadas ao vertiginoso aumento do número de casos e óbitos entre esses. Com base na história oral temática, constatamos que esses profissionais – embora essenciais no enfrentamento à pandemia – se encontram atualmente ainda mais vulnerabilizados, individual e coletivamente. Ainda que homens e mulheres nessa categoria de trabalhadores experimentem de forma muito diferente o sofrimento e o adoecimento em seus respectivos cotidianos laborais. Particularmente, em função das desigualdades de gênero no mercado de trabalho.Este artículo promueve un debate que gira en torno a los conceptos de experiencia y vida cotidiana, memoria y sentimiento, vulnerabilidad y precariedad y sus articulaciones con la oralidad, en la búsqueda de comprender las experiencias de las enfermeras que han trabajado desde el comienzo de la pandemia de COVID. -19 (Coronavirus Disease 2019) en la atención de pacientes afectados por esta enfermedad, en entornos caracterizados por la intensificación de la desprotección y el miedo, además del gran aumento en el riesgo de enfermedad y muerte. Sobre la base de la Historia oral temática, se realizaron entrevistas con 10 trabajadores de enfermería, centrándose en su trabajo en hospitales públicos en Goiânia, una referencia en la atención de personas víctimas de COVID-19. Después de analizar las declaraciones hechas a principios de la segunda mitad de junio de 2020, encontramos y analizamos las diferencias y similitudes en las narraciones de dos grupos de enfermeras con respecto a las formas en que experimentan miedo y las formas en que experimentan el riesgo de enfermedad. y la muerte en el trabajo diario asociado con el patógeno en cuestión, además de las formas de resistencia relacionadas con tales problemas.  This article discusses concepts such as: risk and suffering, subjectivity and experience; everyday life and memory; vulnerability and precariousness. We analyze the work environment experiences of nurses working since the beginning of the Covid-19 pandemic in two public hospitals in Goiânia, reference hospitals in the care of individuals afflicted by the pathogen in question. The interviews were conducted against a background of deepening in the precariousness and flexibility of working conditions and relationships of these professionals, associated with the vertiginous increase in the number of cases and deaths among them. Based on thematic oral history, we found that these professionals – although essential in facing the pandemic – are currently even more vulnerable individually and collectively, and that men and women of this field experience suffering and illness differently in their respective daily work

Goiânia: dinâmicas do patrimônio e da memória entre a instituição da cidade-monumento e a cidade-praticada: diálogos e desafios

The process of reconfiguration of the field of cultural heritage today has challenged researchers to understand the social uses of the past and their relationships with the dynamics of patrimonialization, understood as a process in a context marked by the expansion of memory and identity dynamics. The construction of this new deeply interdisciplinary horizon is evident, with a great recurrence of qualitative methodologies from the 1970s and 1980s. This process is also characterized by the deconstruction of paradigmatic dichotomies: material x immaterial; erudite culture vs. popular culture; present x past; memory x history, etc. This article develops such a discussion from the analysis of dominant narratives about the urban and the city of Goiânia-GO and its relations with two different conceptions of cultural heritage, from its foundation in 1937 until the end of the twentieth century.O processo de reconfiguração do campo do patrimônio cultural na atualidade tem desafiado os pesquisadores a compreender os usos sociais do passado e suas relações com a dinâmica da patrimonialização, compreendida como processo em um contexto demarcado pela expansão da memória e das dinâmicas identitárias. Percebe-se a construção desse novo horizonte profundamente interdisciplinar, assumindo destaque a grande recorrência das metodologias qualitativas a partir dos anos 1970 e 1980. Esse processo é também caracterizado pela desconstrução de dicotomias paradigmáticas: material x imaterial; cultura erudita x cultura popular; presente x passado; memória x história, etc. Este artigo desenvolve tal discussão a partir da análise de narrativas dominantes sobre o urbano e a cidade de Goiânia–GO e suas relações com duas distintas concepções de patrimônio cultural, desde a sua fundação, em 1937, até o final do século XX

MUDANÇAS NO ENSINO SUPERIOR BRASILEIRO NUM CONTEXTO DE RECONFIGURAÇÃO DO MUNDO DO TRABALHO SOB O MODELO DE FLEXIBILIZAÇÃO NEOLIBERAL

O pós-década de 1970, marcado por mudanças como desemprego estrutural, precarização das condições de trabalho, avanço da desregulamentação do mundo do trabalho, informalização da economia, tem contribuido para consolidar o denominado modelo de flexibilização neoliberal. Esta reconfiguração do mundo do trabalho, particularmente nas regiões metropolitanas do país tem sido acompanhada por importantes mudanças relativas ao desenvolvimento do ensino superior no país (especialmente o público e o privado). O artigo tem como objetivo analisar as principais mudanças ocorridas no mundo trabalho a partir dos anos 1970/1980 no Brasil e suas articulações com o desenvolvimento do ensino superior no país neste contexto.&nbsp

Tibiocalcaneal arthrodesis using an Ilizarov fixator

AbstractObjectiveTo evaluate the results of arthrodesis with Ilizarov fixator with tibiocalcaneana.MethodsWe studied 12 patients with a mean age of 35 years, and 9 (75%) men and 3 (25%) women, underwent arthrodesis tibiocalcaneana. The diagnosis in the preoperative talus infection. We used a modified surgical technique Reckling (6 patients) and the Ilizarov technique, modified by Catagni (6 patients). Patients were evaluated by the AOFAS scale research and patient satisfaction.ResultsUnion was achieved in 100% of cases. The mean time to healing was 6 months (range 4-12 months) and mean duration of external fixator removal was 9 months (range 4-13 months). Stretching was performed in 6 patients with an average of 4cm. The follow-up with Vancomycin lasted around 6 months. The average AOFAS score was 72.5 points (range 57 to 89 points). All patients were satisfied with the result.ConclusionDespite the small number of cases, arthrodesis tibiocalcaneana seemed to be a good solution for cases of complex pathologies of the talus, such as infection, resulting in bone healing, pain relief and patient satisfaction