A Model of Neutrino and Higgs Physics at the Electroweak Scale

We present and explore the Higgs physics of a model that in addition to the Standard Model fields includes a lepton number violating singlet scalar field. Based on the fact that the only experimental data we have so far for physics beyond the Standard Model is that of neutrino physics, we impose a constraint for any addition not to introduce new higher scales. As such, we introduce right-handed neutrinos with an Electroweak Scale mass. We study the Higgs decay $H \to \nu \nu$ and show that it leads to different signatures compared to those in the Standard Model, making it possible to detect them and to probe the nature of their couplings.Comment: 11 pages, 4 figures, 1 table. Corrected factor on eq. 17 and data table I. Added references. Version to appear in Physics Letters

Appendiceal mucinous cystadenoma: a case report and review of the literature

Appendicular mucocele is a low incidence neoplasm with a frequency of 2 cases per 10,000 laparotomies. It is found in 0.2 to 0.3% of all appendectomies, with a higher incidence in women after the fifth or sixth decade of life. It is considered a benign lesion, although in some occasions, approximately 20% of cases it is associated with neoplasms of other intra-abdominal organs. Authors present the case of a 88-year-old patient with clinical findings consistent with acute appendicitis resolved with a simple appendicectomy based on the macroscopic findings during surgery

Position-dependent-mass; Cylindrical coordinates, separability, exact solvability, and PT-symmetry

The kinetic energy operator with position-dependent-mass in cylindrical coordinates is obtained. The separability of the corresponding Schr\"odinger equation is discussed within radial cylindrical mass settings. Azimuthal symmetry is assumed and spectral signatures of various z-dependent interaction potentials (Hermitian and non-Hermitian PT-symmetric) are reported.Comment: 16 page

A singular position-dependent mass particle in an infinite potential well

We consider an unusual singular position=dependent-mass particle in an infinite potential well. The corresponding Hamiltonian is mapped through a point-canonical-transformation and an explicit correspondence between the target Hamiltonian and a Poschl-Teller type reference Hamiltonian is obtained. New ordering ambiguity parametric setting are suggested.Comment: 13 pages, no figures. To appear in Phys. Lett.

App de Entretenimiento Interactivo - LOUD

El presente trabajo de investigación muestra un modelo de negocio innovador y escalable, el cual consiste en una aplicación móvil de entretenimiento interactivo a través de videollamadas denominada LOUD App. Esta app posee funcionalidades diferentes a las aplicaciones convencionales que existen en el mercado, ya que cuenta con opciones como karaoke, música compartida, juegos en línea y conciertos en vivo que buscan entretener al público objetivo. El segmento de clientes al que se dirige está compuesto por personas pertenecientes al NSE A, B y C, entre los 20 y 39 años que residan en Lima y posean celulares con conexión a internet. Esta idea de negocio nació en la época de pandemia por la COVID-19 debido a que se detectó un problema referido a las limitadas opciones de entretenimiento interactivo online. Este modelo de negocio ha sido validado en el mercado gracias a experimentos como Mockups, entrevistas, concierge de todas las funcionalidades de la app, entre otros. Asimismo, se ha elaborado la planificación y desarrollo de diversos aspectos como ventas, recursos humanos, operaciones, marketing, financiero y responsabilidad social empresarial que son requeridos para poner en marcha un negocio. En este sentido, a través de la elaboración de este proyecto, se ha podido comprobar que LOUD es un modelo de negocio rentable y que posee una ventaja competitiva diferenciadora en el mercado.This research work shows an innovative and scalable business model, which consists of a mobile application for interactive entertainment through video calls called LOUD App. This app has different functionalities than conventional applications that exist in the market, since it has with options such as karaoke, shared music, online games and live concerts that seek to entertain the target audience. The customer segment it is aimed at is made up of people belonging to NSE A, B and C, between 20 and 39 years old who reside in Lima and have cell phones with internet connection. This business idea was born at the time of the COVID-19 pandemic because a problem was detected regarding the limited options for interactive online entertainment. This business model has been validated in the market thanks to experiments such as mockups, interviews, concierge of all the functionalities of the app, among others. Likewise, the planning and development of various aspects such as sales, human resources, operations, marketing, financial and corporate social responsibility that are required to start a business have been prepared. In this sense, through the elaboration of this project, it has been possible to verify that LOUD is a profitable business model and that it has a differentiating competitive advantage in the market.Trabajo de investigació

Inglés para el mercado laboral. Diseño e implementación de una app (offline en beta test) para la enseñanza de inglés técnico (ESP) en el área de la construcción y la madera.

New technologies pose challenges to the foreign language teaching process, in our case, the teaching of English for Specific Purposes (ESP) at the CTCM. Therefore, we have decided to develop an application for mobile phones (smartphones) using concepts taken from “m-learning, MALL, CALL, SCRUM methodology, for the development of applications, the Task- Based Approach for foreign language teaching, and the Communicative Approach. It is expected that this application be used offline by the apprentices of the center in case they do not have a data plan on their mobile devices. The app construction process involves the implementation of various processes ranging from code design, Web architecture, icon design, technical vocabulary in English, definitions, pedagogical and playful activities, conceptual and theoretical framework, results and conclusions, just to mention a few of them. The project clearly explains its importance, the theoretical and methodological concepts that must be taken into account when using the app, a booklet with its corresponding user manual in both English and Spanish and the preliminary results obtained in the (Alpha testing) stage. Finally, predictions are made about the advantages, scope and possible limitations that may be found at the time of its implementation at the CTCM.Las nuevas tecnologías suponen retos al proceso de enseñanza de las lenguas extranjeras, en nuestro caso particular del inglés técnico (ESP) en el CTCM. Es por dicho motivo que se decidió desarrollar una aplicación para teléfonos móviles (smartphones) empleando conceptos tomados de “m-learning, MALL, CALL, metodología SCRUM, para el desarrollo de aplicaciones, el enfoque por tareas para la enseñanza de lenguas y el enfoque comunicativo. Se espera que dicha aplicación pueda ser empleada offline por los aprendices del centro, en caso de no tener un plan de datos en su dispositivo móvil. El proceso de construcción de la app involucra la puesta en marcha de diversos procesos que van desde el diseño del código, arquitectura Web, diseño de iconos, vocabulario técnico en inglés, definiciones, actividades pedagógicas y lúdicas, marco conceptual y teórico, resultados y conclusiones, tan sólo por mencionar algunos de ellos. En el proyecto se explica claramente la importancia del mismo, los conceptos teóricos y metodológicos que se deben tener en cuenta al momento de utilizar la app, una cartilla con su respectivo manual del usuario tanto en inglés como en español y los resultados preliminares obtenidos en la fase de (Alfa testing). Finalmente, se hace una predicción sobre las ventajas, alcances y posibles limitaciones que se puedan encontrar al momento de su implementación en el CTCM

Inglés para el mercado laboral. Diseño e implementación de una app (offline en beta test) para la enseñanza de inglés técnico (ESP) en el área de la construcción y la madera.

New technologies pose challenges to the foreign language teaching process, in our case, the teaching of English for Specific Purposes (ESP) at the CTCM. Therefore, we have decided to develop an application for mobile phones (smartphones) using concepts taken from “m-learning, MALL, CALL, SCRUM methodology, for the development of applications, the Task- Based Approach for foreign language teaching, and the Communicative Approach. It is expected that this application be used offline by the apprentices of the center in case they do not have a data plan on their mobile devices. The app construction process involves the implementation of various processes ranging from code design, Web architecture, icon design, technical vocabulary in English, definitions, pedagogical and playful activities, conceptual and theoretical framework, results and conclusions, just to mention a few of them. The project clearly explains its importance, the theoretical and methodological concepts that must be taken into account when using the app, a booklet with its corresponding user manual in both English and Spanish and the preliminary results obtained in the (Alpha testing) stage. Finally, predictions are made about the advantages, scope and possible limitations that may be found at the time of its implementation at the CTCM.Las nuevas tecnologías suponen retos al proceso de enseñanza de las lenguas extranjeras, en nuestro caso particular del inglés técnico (ESP) en el CTCM. Es por dicho motivo que se decidió desarrollar una aplicación para teléfonos móviles (smartphones) empleando conceptos tomados de “m-learning, MALL, CALL, metodología SCRUM, para el desarrollo de aplicaciones, el enfoque por tareas para la enseñanza de lenguas y el enfoque comunicativo. Se espera que dicha aplicación pueda ser empleada offline por los aprendices del centro, en caso de no tener un plan de datos en su dispositivo móvil. El proceso de construcción de la app involucra la puesta en marcha de diversos procesos que van desde el diseño del código, arquitectura Web, diseño de iconos, vocabulario técnico en inglés, definiciones, actividades pedagógicas y lúdicas, marco conceptual y teórico, resultados y conclusiones, tan sólo por mencionar algunos de ellos. En el proyecto se explica claramente la importancia del mismo, los conceptos teóricos y metodológicos que se deben tener en cuenta al momento de utilizar la app, una cartilla con su respectivo manual del usuario tanto en inglés como en español y los resultados preliminares obtenidos en la fase de (Alfa testing). Finalmente, se hace una predicción sobre las ventajas, alcances y posibles limitaciones que se puedan encontrar al momento de su implementación en el CTCM

Antimicrobial resistance among migrants in Europe: a systematic review and meta-analysis

BACKGROUND: Rates of antimicrobial resistance (AMR) are rising globally and there is concern that increased migration is contributing to the burden of antibiotic resistance in Europe. However, the effect of migration on the burden of AMR in Europe has not yet been comprehensively examined. Therefore, we did a systematic review and meta-analysis to identify and synthesise data for AMR carriage or infection in migrants to Europe to examine differences in patterns of AMR across migrant groups and in different settings. METHODS: For this systematic review and meta-analysis, we searched MEDLINE, Embase, PubMed, and Scopus with no language restrictions from Jan 1, 2000, to Jan 18, 2017, for primary data from observational studies reporting antibacterial resistance in common bacterial pathogens among migrants to 21 European Union-15 and European Economic Area countries. To be eligible for inclusion, studies had to report data on carriage or infection with laboratory-confirmed antibiotic-resistant organisms in migrant populations. We extracted data from eligible studies and assessed quality using piloted, standardised forms. We did not examine drug resistance in tuberculosis and excluded articles solely reporting on this parameter. We also excluded articles in which migrant status was determined by ethnicity, country of birth of participants' parents, or was not defined, and articles in which data were not disaggregated by migrant status. Outcomes were carriage of or infection with antibiotic-resistant organisms. We used random-effects models to calculate the pooled prevalence of each outcome. The study protocol is registered with PROSPERO, number CRD42016043681. FINDINGS: We identified 2274 articles, of which 23 observational studies reporting on antibiotic resistance in 2319 migrants were included. The pooled prevalence of any AMR carriage or AMR infection in migrants was 25·4% (95% CI 19·1-31·8; I2 =98%), including meticillin-resistant Staphylococcus aureus (7·8%, 4·8-10·7; I2 =92%) and antibiotic-resistant Gram-negative bacteria (27·2%, 17·6-36·8; I2 =94%). The pooled prevalence of any AMR carriage or infection was higher in refugees and asylum seekers (33·0%, 18·3-47·6; I2 =98%) than in other migrant groups (6·6%, 1·8-11·3; I2 =92%). The pooled prevalence of antibiotic-resistant organisms was slightly higher in high-migrant community settings (33·1%, 11·1-55·1; I2 =96%) than in migrants in hospitals (24·3%, 16·1-32·6; I2 =98%). We did not find evidence of high rates of transmission of AMR from migrant to host populations. INTERPRETATION: Migrants are exposed to conditions favouring the emergence of drug resistance during transit and in host countries in Europe. Increased antibiotic resistance among refugees and asylum seekers and in high-migrant community settings (such as refugee camps and detention facilities) highlights the need for improved living conditions, access to health care, and initiatives to facilitate detection of and appropriate high-quality treatment for antibiotic-resistant infections during transit and in host countries. Protocols for the prevention and control of infection and for antibiotic surveillance need to be integrated in all aspects of health care, which should be accessible for all migrant groups, and should target determinants of AMR before, during, and after migration. FUNDING: UK National Institute for Health Research Imperial Biomedical Research Centre, Imperial College Healthcare Charity, the Wellcome Trust, and UK National Institute for Health Research Health Protection Research Unit in Healthcare-associated Infections and Antimictobial Resistance at Imperial College London

La sociología de la salud y los paradigmas de investigación

El presente libro se deriva del trabajo colegiado de la investigación científica, que realizan maestro y alumnos de las diferentes sedes académicas, para así contribuir mas a la investigación y que de igual manera sea un complemento de estudio para la Licenciatura en Educación para la Salud y para la Maestría en Sociología de la SaludEl libro contiene diversas temáticas que muestran conocimientos, metodologías, técnicas, herramientas y lenguajes necesarios utilizados comúnmente en el área de las Ciencias Sociales y de la Salud, desde un enfoque multi y transdisciplinario para poder indagar los elementos que componen la diversidad, la multiculturalidad y el medio ambiente que gira en torno a los temas de salud y de los estilos de vida saludabl

Evenness mediates the global relationship between forest productivity and richness

1. Biodiversity is an important component of natural ecosystems, with higher species richness often correlating with an increase in ecosystem productivity. Yet, this relationship varies substantially across environments, typically becoming less pronounced at high levels of species richness. However, species richness alone cannot reflect all important properties of a community, including community evenness, which may mediate the relationship between biodiversity and productivity. If the evenness of a community correlates negatively with richness across forests globally, then a greater number of species may not always increase overall diversity and productivity of the system. Theoretical work and local empirical studies have shown that the effect of evenness on ecosystem functioning may be especially strong at high richness levels, yet the consistency of this remains untested at a global scale. 2. Here, we used a dataset of forests from across the globe, which includes composition, biomass accumulation and net primary productivity, to explore whether productivity correlates with community evenness and richness in a way that evenness appears to buffer the effect of richness. Specifically, we evaluated whether low levels of evenness in speciose communities correlate with the attenuation of the richness–productivity relationship. 3. We found that tree species richness and evenness are negatively correlated across forests globally, with highly speciose forests typically comprising a few dominant and many rare species. Furthermore, we found that the correlation between diversity and productivity changes with evenness: at low richness, uneven communities are more productive, while at high richness, even communities are more productive. 4. Synthesis. Collectively, these results demonstrate that evenness is an integral component of the relationship between biodiversity and productivity, and that the attenuating effect of richness on forest productivity might be partly explained by low evenness in speciose communities. Productivity generally increases with species richness, until reduced evenness limits the overall increases in community diversity. Our research suggests that evenness is a fundamental component of biodiversity–ecosystem function relationships, and is of critical importance for guiding conservation and sustainable ecosystem management decisions