Epidemic thresholds for bipartite networks

It is well known that sexually transmitted diseases (STD) spread across a network of human sexual contacts. This network is most often bipartite, as most STD are transmitted between men and women. Even though network models in epidemiology have quite a long history now, there are few general results about bipartite networks. One of them is the simple dependence, predicted using the mean field approximation, between the epidemic threshold and the average and variance of the degree distribution of the network. Here we show that going beyond thisapproximation can lead to qualitatively different results that are  supported by numerical simulations. One of the new features, that can be relevant for applications, is the existence of a critical value for the infectivity of each population, below which no epidemics can arise, regardless of the value of the infectivity of the other population.Fil: Hernandez, Damián G.. Comision Nacional de Energia Atomica. Gerencia del _rea de Energía Nuclear. Instituto Balseiro; Argentina;Fil: Risau Gusman, Sebastian Luis. Comision Nacional de Energia Atomica. Gerencia del Area Investicaciones y Aplicaciones No Nucleares; Argentina

Modelo estratégico de pensamiento creativo para producir textos narrativos: cuentos en cuarto grado de primaria – Lambayeque

The present research denominated "Strategic model of creative thought to produce narrative texts: stories in fourth grade of primary - Lambayeque", was realized with the objective of proposing a strategic model of creative thought to produce stories in fourth grade of primary of IE 10132 Jesus Divine Master - Mochumí. In order to formalize the research, the IE director's authorization was requested, in which he provided the facilities to evaluate the level of text production, in the selected sample of 96 students. The results of the evaluation indicate that only 14% of the students in the four sections are planning in the dimension of planning by grade when planning a text, also as it is observed in the present study, in the dimension of textualization only 35% of the students apply the processes of textualization for the correct elaboration of a text. Finally, it is recommended that the director and teachers of EI No. 10132 Jesus Divine Master of Mochumí give greater emphasis on the strategic model of creative thinking through internal policies and meaningful learning sessions that contributes to raising the production of narrative texts and reading comprehension.La presente investigación denominado “Modelo estratégico de pensamiento creativo para producir textos narrativos: cuentos en cuarto grado de primaria – Lambayeque”, se realizó con el objetivo de proponer un modelo estratégico de pensamiento creativo para producir cuentos en cuarto grado de primaria de la I.E 10132 Jesús Divino Maestro – Mochumí. Para formalizar la investigación se solicitó la autorización del director de la I.E, en cuyo marco brindó las facilidades para evaluar el nivel de producción de textos, en la muestra seleccionada de 96 estudiantes. Los resultados de la evaluación indican que en la dimensión de planificación por grado solo el 14% del total de los alumnos de las cuatro secciones planifica al momento de elaborar un texto, asimismo según se observa en el presente estudio, en la dimensión de textualización solo el 35% de los alumnos aplica los procesos de textualización para la correcta elaboración de un texto. Finalmente, se recomienda que el director y los docentes de la I.E N° 10132 Jesús Divino Maestro de Mochumí den mayor énfasis sobre el modelo estratégico de pensamiento creativo mediante las políticas internas y sesiones de aprendizaje significativo que contribuya a elevar la producción de textos narrativos y comprensión lectora

The university in Latin America: Science and technology from the humanities: Emer(conver) tendencies. Regional chapter of de 7th World Report on Higher Education. The Global University Network for Innovation (GUNI)

El modelo de Universidad disciplinar y de separación de sus procesos y resultados académicos hace que la gestión de nuevos conocimientos, la sinergia entre las humanidades, la ciencia, el arte y la tecnología, la organización del currículum y la estructura de su gobierno y de la representación de sus principales actores y comunidades, hayan sobrevivido sin grandes cambios durante los últimos cien años, con una identidad y una raigambre histórica muy vinculada a las luchas estudiantiles y a las coyunturas históricas de los distintos gobiernos y países, sobre todo con el muy fuerte y determinante legado que dejó el movimiento reformista estudiantil de 1918 de la Universidad de Córdoba, Argentina, y que fue extensivo a lo largo y ancho de la región en la mayoría de sus universidades, y que aún prevalece y siguen siendo un referente obligado de afinidad. En este trabajo, este contexto de referencia destaca algunas de las tendencias que están en debate en la región de América Latina y el Caribe, desde la perspectiva de cambios que apuntan a ubicar a las ciencias y a la tecnología desde las humanidadesO modelo de universidade disciplinar e de separação de seus processos e resultados acadêmicos, faz com que a gestão de novos conhecimentos, a sinergia entre as humanidades, a ciência, a arte a tecnologia, a organização do currículo e a estrutura de seu governo e da representação de seus principais atores e comunidades, tenham sobrevivido sem grandes mudanças durante os últimos cem anos, com uma identidade e raízes históricas muito vinculada às lutas estudantis e às conjunturas históricas dos distintos governos e países, sobretudo com um legado muito forte e determinante herdado do movimento reformista estudantil de 1918, da Universidade de Córdoba, Argentina, e que se entendeu amplamente na maioria das universidades em toda a região, que ainda prevalece e segue como referência obrigatória de afinidade. Neste trabalho, esse contexto de referência destaca algumas das tendências que estão em debate na região da América Latina e do Caribe, sob a perspectiva de mudanças que visam localizar as ciências e a tecnologia a partir das Humanidades.The model of disciplinary university, and separation of the processes and academic results, makes the management of new knowledge, the synergy between the humanities, science, art and technology, the organization of the curriculum and the structure of its government and the representation of its main actors and communities, have survived without great changes over the last hundred years in the higher education institutions of Latin America, with an identity and a historical roots closely linked to student struggles and the historical joints of different governments and countries, especially with the very strong and decisive legacy left by the student reform movement of 1918, of the University of Cordoba, Argentina, and which was extensive throughout the region at most of its universities, and which still prevails and remain and obligatory reference of affinity . In this work, this reference context highlights some of the trends that are in the debate in the Latin American and the Caribbean region, from the perspective of changes that aim to locate sciences and technology from the humanities.Fil: Alvarez, Freddy. Universidad Nacional Autónoma de México; MéxicoFil: Caamaño, Carmen. Universidad de Costa Rica; Costa RicaFil: Caregnato, Celia. Universidade Federal do Rio Grande do Sul; BrasilFil: Perrotta, Daniela Vanesa. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Filosofia y Letras. Instituto de Investigación en Ciencias de la Educación; Argentina. Consejo Latinoamericano de Ciencias Sociales; ArgentinaFil: del Valle, Damián. Universidad Nacional de las Artes; ArgentinaFil: Hernandez, Alicia. Universidad Nacional de las Artes; ArgentinaFil: Torlucci, Sandra Daniela. Universidad Nacional de las Artes; Argentin

Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements