Contact detection between a small ellipsoid and another quadric

[Abstract] We analyze the characteristic polynomial associated to an ellipsoid and another quadric in the context of the contact detection problem. We obtain a necessary and sufficient condition for an efficient method to detect contact. This condition, named smallness condition, is a feature on the size and the shape of the quadrics and can be checked directly from their parameters. Under this hypothesis, contact can be noticed by means of the expressions in a discriminant system of the characteristic polynomial. Furthermore, relative positions can be classified through the sign of the coefficients of this polynomial. As an application of these results, a method to detect contact between a small ellipsoid and a combination of quadrics is given

Implementación de un sistema b-learning en la enseñanza práctica de Fisiopatología

Fac. de FarmaciaFALSEsubmitte

Impacto de la implementación del aprendizaje basado en problemas en combinación con las prácticas de laboratorio clínico y virtual de Fisiopatología para el desarrollo de competencias profesionales

Sección Deptal. de Fisiología (Farmacia)Fac. de FarmaciaFALSEsubmitte

Implementación del aprendizaje basado en problemas (ABP) en la enseñanza práctica de la fisiología del sistema digestivo

Sección Deptal. de Fisiología (Farmacia)Fac. de FarmaciaFALSEsubmitte

Adaptación a un entorno semipresencial de una nueva herramienta mixta del aprendizaje basado en problemas en combinación con las prácticas de laboratorio clínico a la nueva asignatura Bases Anatómicas y Fisiología del Cuerpo Humano

Sección Deptal. de Fisiología (Farmacia)Fac. de FarmaciaFALSEsubmitte

Cohomological obstructions and weak crossed products over weak Hopf algebras

Financiado para publicación en acceso aberto: Universidade de Vigo/CISUGLet H be a cocommutative weak Hopf algebra and let (B,φB)a weak left H-module algebra. In this paper, for a twisted convolution invertible morphism σ : H2 → B we define its obstruction θσ as a Sweedler 3-cocycle with values in the center of B. We obtain that the class of this obstruction vanish in third Sweedler cohomology group H3φZ(B) (H, Z(B)) if, and only if, there exists a twisted convolution invertible 2-cocycle α : H2 → B such that H ⊗ B can be endowed with a weak crossed product structure with α keeping a cohomological-like relation with σ. Then, as a consequence, the class of the obstruction of σ vanish if, and only if, there exists a cleft extension of B by H.Agencia Estatal de Investigación | Ref. PID2020-115155GB-I0

Revista de educación inclusiva

Resumen basado en el de la publicaciónTítulo, resumen y palabras clave en español y en inglésSe investiga si el uso de software educativo puede potenciar la memoria operativa, la atención, la planificación y el control inhibitorio en una niña de nueve años diagnosticada recientemente con TDAH. Utilizando un diseño de investigación colaborativa se realiza un estudio de tipo cuasiexperimental basado en un estudio de caso único. Junto con el software, se utilizan como instrumentos de investigación un anecdotario, test estandarizados y notas académicas. Los resultados muestran una mejora en las puntuaciones del postest, fundamentalmente en los niveles de atención y memoria operativa, junto a la disminución de verbalizaciones y conductas inadecuadas.ES

COVID-19 in hospitalized HIV-positive and HIV-negative patients : A matched study

CatedresObjectives: We compared the characteristics and clinical outcomes of hospitalized individuals with COVID-19 with [people with HIV (PWH)] and without (non-PWH) HIV co-infection in Spain during the first wave of the pandemic. Methods: This was a retrospective matched cohort study. People with HIV were identified by reviewing clinical records and laboratory registries of 10 922 patients in active-follow-up within the Spanish HIV Research Network (CoRIS) up to 30 June 2020. Each hospitalized PWH was matched with five non-PWH of the same age and sex randomly selected from COVID-19@Spain, a multicentre cohort of 4035 patients hospitalized with confirmed COVID-19. The main outcome was all-cause in-hospital mortality. Results: Forty-five PWH with PCR-confirmed COVID-19 were identified in CoRIS, 21 of whom were hospitalized. A total of 105 age/sex-matched controls were selected from the COVID-19@Spain cohort. The median age in both groups was 53 (Q1-Q3, 46-56) years, and 90.5% were men. In PWH, 19.1% were injecting drug users, 95.2% were on antiretroviral therapy, 94.4% had HIV-RNA < 50 copies/mL, and the median (Q1-Q3) CD4 count was 595 (349-798) cells/μL. No statistically significant differences were found between PWH and non-PWH in number of comorbidities, presenting signs and symptoms, laboratory parameters, radiology findings and severity scores on admission. Corticosteroids were administered to 33.3% and 27.4% of PWH and non-PWH, respectively (P = 0.580). Deaths during admission were documented in two (9.5%) PWH and 12 (11.4%) non-PWH (P = 0.800). Conclusions: Our findings suggest that well-controlled HIV infection does not modify the clinical presentation or worsen clinical outcomes of COVID-19 hospitalization