A Família nas Novas Parentalidades. Um Pensamento Rizomático

In this paper we perform some points about the implications of working and researching with families and parenting in the current geopolitical scene. They are reflections from the university teaching of a Social Psychology in Uruguay. We try to problematize what is meant by family and to that end we take some lines of meaning of the word to focus the analysis. One of them is to think of it as an institution in its game of conservation and change, based on socio-historical contexts. Another approach to analysis is the articulation that occurs in the contemporaneity between family and new parenting, understanding the concept of parenthood as an analyzer of time. Next, we refer to the place that the family acquires in the speeches of the anti-gender movements, which attack the rights conquered and proclaim the return to the traditional family. In that sense we ask ourselves about the threats that arise in the new family compositions and the production of alternative subjectivity to the capitalist logic. As a closure, a rhizomatic thinking is proposed that takes into account the connection between family and politics as well as an intersectional analysis of the inequalities present in families. The intention is to deepen the connections between the construction of the collective and the common in the new parenting. As well as the ethical-political challenge for Latin American public universities, so that they are spaces of free thought production and situated in current debates.En este trabajo realizamos algunas puntualizaciones sobre las implicancias que tiene trabajar e investigar con familias y parentalidades en el contexto geopolítico actual. Son reflexiones a partir de la docencia universitaria de una Psicología Social en Uruguay. Procuramos problematizar qué se entiende por familia y con ese fin tomamos algunas líneas de significación del vocablo para enfocar el análisis. Una de ellas es pensarla como institución en su juego de conservación y cambio, en función de los contextos socio-históricos. Otro enfoque de análisis es la articulación que se produce en la contemporaneidad entre familia y nuevas parentalidades, entendiendo el concepto de parentalidad como un analizador de época. Seguidamente hacemos alusión al lugar que adquiere la familia en los discursos de los movimientos anti género, que arremeten contra los derechos conquistados y pregonan el regreso a la familia tradicional. En ese sentido nos preguntamos acerca de las amenazas que se plantean en las nuevas composiciones familiares y la producción de subjetividad alternativa a la lógica capitalística. Como cierre se propone un pensar rizomático, que tome en cuenta la conexión entre familia y política así como un análisis interseccional de las desigualdades presentes en las familias. Se deja planteada la intención de profundizar en las conexiones entre la construcción de lo colectivo y lo común en las nuevas parentalidades. Así como el desafío de carácter ético-político para las universidades públicas latinoamericanas, para que las mismas sean espacios de producción de pensamiento libre y situado en los debates actuales.Neste artigo, apresentamos alguns pontos sobre as implicações de trabalhar e pesquisar com famílias e parentalidades no atual contexto geopolítico. São reflexões do ensino universitário de uma Psicologia Social no Uruguai. Procuramos problematizar o que se entende por família e para isso tomamos algumas linhas de significado da palavra para focar a análise. Uma delas é pensar nela como uma instituição em seu jogo de conservação e mudança, baseada em contextos sócio-históricos. Outra abordagem da análise é a articulação que ocorre na contemporaneidade entre a família e a nova parentalidade, entendendo o conceito de parentalidade como um analisador da época. Em seguida, nos referimos ao lugar que a família adquire nos discursos dos movimentos anti-gênero, que atacam os direitos conquistados e proclamam o retorno à família tradicional. Nesse sentido, nos perguntamos sobre as ameaças que surgem nas novas composições familiares e a produção de subjetividade alternativa à lógica capitalista. Como fechamento, propõe-se um pensamento rizomático que leva em conta a conexão entre família e política, bem como uma análise intersetorial das desigualdades presentes nas famílias. A intenção é aprofundar as conexões entre a construção do coletivo e o comum na nova parentalidade. Bem como o desafio ético-político das universidades públicas latino-americanas, de modo que eles são espaços de produção de pensamento livre e localizados nos debates atuais

Excitons in twisted AA' hexagonal boron nitride bilayers

The twisted hexagonal boron nitride (hBN) bilayer has demonstrated exceptional properties, particularly the existence of electronic flat bands without needing a magic angle, suggesting strong excitonic effects. Therefore, a systematic approach is presented to study the excitonic properties of twisted AA' hBN using the Bethe-Salpeter equation based on single-particle tight-binding wave functions. These are provided by a one-particle Hamiltonian that is parameterized to describe the main features of {\it ab initio} calculations. The Bethe-Salpeter equation is then solved in the so-called excitonic transition representation, which significantly reduces the problem dimensionality by exploiting the system's symmetries. Consequently, the excitonic energies and the excitonic wave functions are obtained from the direct diagonalization of the effective two-particle Hamiltonian of the Bethe-Salpeter equation. We have studied rotation angles as low as $7.34^{\circ}$. The model allows the study of commensurate and incommensurate moir\'e patterns at much lower computational cost than the {\it ab initio} version of the Bethe-Salpeter equation. Here, using the model and effective screening of the Keldysh type, we could obtain the absorption spectra and characterize the excitonic properties of twisted hBN bilayers for different rotation angles, demonstrating how this property affects the excitonic energies and localizations of their wavefunctions.Comment: 32 pages, 16 figure

QPOML: A Machine Learning Approach to Detect and Characterize Quasi-Periodic Oscillations in X-ray Binaries

Astronomy is presently experiencing profound growth in the deployment of machine learning to explore large datasets. However, transient quasi-periodic oscillations (QPOs) which appear in power density spectra of many X-ray binary system observations are an intriguing phenomena heretofore not explored with machine learning. In light of this, we propose and experiment with novel methodologies for predicting the presence and properties of QPOs to make the first ever detections and characterizations of QPOs with machine learning models. We base our findings on raw energy spectra and processed features derived from energy spectra using an abundance of data from the NICER and RXTE space telescope archives for two black hole low mass X-ray binary sources, GRS 1915+105 and MAXI J1535-571. We advance these non-traditional methods as a foundation for using machine learning to discover global inter-object generalizations between - and provide unique insights about - energy and timing phenomena to assist with the ongoing challenge of unambiguously understanding the nature and origin of QPOs. Additionally, we have developed a publicly available Python machine learning library, QPOML, to enable further Machine Learning aided investigations into QPOs.Comment: 18 pages, 12 figures, accepted by MNRA

Alta variación genética en los patrones del cromosoma Y de la población Mocoví

La pérdida de variabilidad genética en el cromosoma Y es frecuente en grupos étnicos reducidos numéricamente, debido a que este cromosoma suele estar sometido a barridos selectivos. A pesar de ser pequeña, la población Mocoví conserva una cantidad significativa de variación genética en relación con otras comunidades nativas, pero su diversidad a nivel del cromosoma Y no se conoce en profundidad. El objetivo de este trabajo fue analizar la variabilidad genética del cromosoma Y en una muestra de varones Mocoví de la provincia de Santa Fe (Argentina). Se tipificaron 11 microsatélites (STRs) y dos marcadores bialélicos (SNPs): M3 y M346. La diversidad observada fue elevada, y los 25 haplotipos obtenidos se compararon con la base de datos YHRD, donde 13 de ellos estuvieron ausentes. Se realizó una comparación con datos publicados de otros grupos nativos de Gran Chaco, la cual mostró diferencias significativas entre los Mocoví y algunas comunidades de distinto origen étnico. Este estudio, junto con otros realizados sobre marcadores moleculares del pueblo Mocoví, demuestran que este grupo étnico conserva una alta diversidad, que los diferencia claramente de otras comunidades amerindias.In numerically small ethnic groups, the loss of genetic variability in the Y chromosome is frequent, because this genomic compartment is often subjected to selective sweeps. Despite its small size, the Mocoví population retains a significant amount of genetic variation in relation to other native communities, but their Y chromosome diversity is not known in depth. The aim of this study was to analyze the genetic variability of the Y chromosome in a sample of Mocoví males from Santa Fe province (Argentina). We genotyped 11 short tandem repeats (STRs) and two single nucleotide polymorphisms (SNPs): M3 and M346. The diversity observed was high, and the 25 haplotypes obtained were compared to the YHRD database, with 13 of them absent of that database. A comparison with previous data reported from other Gran Chaco native groups showed significant differences between the Mocoví and other populations of different ethnic origin. This result and other studies on molecular markers of the Mocoví prove that this ethnic group retains a high genetic diversity that clearly differentiate them from other Amerindian populations.Fil: Glesmann, Laura Angela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; ArgentinaFil: Martina, Pablo F.. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Misiones. Facultad de Ciencias Exactas Químicas y Naturales. Departamento de Biología; ArgentinaFil: Mendez, Marta Graciela. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaFil: Catanesi, Cecilia Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Multidisciplinario de Biología Celular. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Multidisciplinario de Biología Celular. Universidad Nacional de La Plata. Instituto Multidisciplinario de Biología Celular; Argentin

Evaluating periodontal conditions in patients with von Willebrand?s disease in Hospital Universitario de Maracaibo (University Hospital, Maracaibo) -Venezuela

Objective: To evaluate the periodontal conditions of patients with von Willebrand?s Disease (vWD) who went for dental examination in the ?Area of attention to patients with systemic disease? of the University Hospital in Maracaibo, Venezuela. Design of the Study: 40 patients (28 female and 12 male), with ages ranging from 10 to 72 years, who regularly attended dental control, were evaluated along with a control group of patients with no hemorrhagic alterations. Periodontal conditions were evaluated using the Löe and Silness Gingival Index (GI) and Greene and Vermillon?s Simplified Oral Hygiene Index (SOHI). The results were analyzed using averages, Standard Deviation, Student?s T-test and the Chi² test, with P<0.0005. Results: 92.5% of the patients had Type 1 vWD and 7.5% had Type 2 or 3. Periodontal Indices: GI (0.70±0.40, slight) and SOHI (1,70±0,80, acceptable). Comparison with the control group showed that there were statistically significant differences in the SOHI (P = 0.02). Conclusions: Periodontal conditions in patients with vWD regularly attending for dental control were within acceptable parameters. Education of the patient with regard to prevention and opportune treatment is of utmost importance, thereby avoiding the oral hemorrhagic complications produced by the periodontal disease. Of equal importance is multidisciplinary teamwork