Non-universal electroweak extensions of the standard model and the scotogenic models

In order to analyze some low energy experimental anomalies, we charge with a non-universal $U(1)'$ gauge symmetry the standard model fermions, taking as a starting point the well-known scotogenic model. In order to have non-trivial solutions to the anomalies and the Yukawa constraints, we add three neutral singlet Dirac fermions. We have found two possible non-universal solutions which, as a matter of principle, are suitable to analyze family-dependent experimental anomalies.Comment: PIC2018: XXXVIII International Symposium on Physics in Collision, Bogot\'a, Colombia, 2018. 6 pages, LaTeX, 1 pdf figure

Barriers to Breast Cancer-Screening Adherence in Vulnerable Populations

: Breast cancer screening through periodic mammography has been effective in decreasing mortality and reducing the impact of this disease. However, adherence to screening does not meet the desired expectations from all populations. The main objective of this review is to explore the barriers that affect adherence to breast cancer-screening programs in vulnerable populations according to race and/or ethnicity in order to propose measures to reduce the lack of adherence. We conducted a search of publications in the PubMed Central and Scopus databases. The eligible criteria for the articles were as follows: original quantitative studies appearing in SJR- and/or JCR-indexed journals from 2016 to 2021 in English or Spanish. Most of them present common barriers, such as race/ethnicity (47%), low socioeconomic (35.3%) and educational levels (29.4%), no family history of cancer and being single (29.4%), medical mistrust and a health information gap (23.5%), lack of private health insurance (17.6%) and not having annual health checks (17.6%). The target populations with the lowest adherence were Black, Asian, Hispanic and foreign women. Implementing awareness campaigns focused on these populations should be promoted, as well as working on diversity, cultural acceptance and respect with healthcare workers, in order to improve breast cancer-screening adherence worldwide

Molecular and expression analysis of a family of the Amblyomma americanum tick Lospins

114 ha

Shape Deformation driven Structural Transitions in Quantum Hall Skyrmions

The Quantum Hall ground state away from $\nu = 1$ can be described by a collection of interacting skyrmions. We show within the context of a nonlinear sigma model, that the classical ground state away from $\nu = 1$ is a skyrmion crystal with a generalized N\'eel order. We show that as a function of filling $\nu$, the skyrmion crystal undergoes a triangle to square to triangle transition at zero temperature. We argue that this structural transition, driven by a change in the shape of the individual skyrmions, is stable to thermal and quantum fluctuations and may be probed experimentally.Comment: 4 pages (REVTEX) and 4 .eps figure

Planimetría

Nos es muy grato presentarles a los estudiantes y profesionales de topografía el presente texto, que es el resultado de un gran trabajo de consulta y compilación bibliográfica de la información dispersa en distintos medios como libros, manuales e Internet, sobre el área de planimetría. En este libro recogimos la experiencia como estudiantes del programa de topografía de la Universidad del Quindío y el conocimiento de un gran profesional como lo es el topógrafo y fotogrametrista GILBERTO GÓMEZ GÓMEZ; que nos permite tener una visión de las necesidades del estudiante de dicho programa y de otros de la misma institución. Para hacer que este sea amplio en conceptos, criterios y conocimientos de las técnicas propias de los procesos planimetritos.1. PREAMBULO 1 1.1 Geometría 1 1.2 Algebra 16 1.3 Geometría Analítica 17 1.4 Trigonometría Plana 29 1.5 Escalas 32 2.MEDIDAS Y ERRORES 37 2.1 Comparaciones cualitativas 2.2 Comparaciones cuantitativas 2.3 Concepto de Medida 2.4 Distribución Normal 2.5 Precisión y Exactitud 2.6 Incertidumbre de las medidas 2.7 Tipos de Errores: 2.7.1 Sistemáticos 2.7.2 Aleatorios 2.8 Causas de Errores: Naturales Instrumentales Personales 2.9 Error Real 2.10 Error Relativo 2.11 Cifras Significativas 2.12 Estimación de una medida directa 2.13 Valor más Probable 2.14 Determinación del EMC 3. TEODOLITO 55 4. ÁNGULOS 79 5. DISTANCIAS 109 6. POLIGONALES 137 7. LEVANTAMIENTOS 145 8. CALCULOS 163PregradoTecnólogo en Topografí

Non-universal electroweak extensions of the standard model and the scotogenic models

n order to analyze some low energy experimental anomalies, we charge with a non-universal U(1)′ gauge symmetry the standard model fermions, taking as a starting point the well-knownscotogenic model. In order to have non-trivial solutions to the anomalies and the Yukawaconstraints, we add three neutral singlet Dirac fermions. We have found two possible non-universal solutions which, as a matter of principle, are suitable to analyze family-dependentexperimental anomalies