Análisis del comportamiento del consumidor en base a la tecnología de realidad aumentada: caso multiópticas

Los principales objetivos son: - Analizar el "estado del arte" de la realidad aumentada - Identificar tipos de realidad aumentada así como los dispositivos empleados - Conocer las ventajas e inconvenientes de su uso para la empresa y el consumidor - Conocer los campos de aplicación de la realidad aumentada (educación, medicina, arquitectura, turismo¿) - Desarrollar un estudio cuantitativo para conocer el efecto de la realidad aumentada sobre la experiencia de compra. El presente trabajo analizará el uso actual de la realidad aumentada como herramienta de marketing así como su efecto sobre diferentes variables asociadas a la experiencia de compra.Facultad de Ciencias de la EmpresaUniversidad Politécnica de Cartagen

Administering the CPT/IVA to evaluate the effects of neurofeedback in ADHD

Continuous Performance Tests (CPT) have proven effective for monitoring the effects of treatments for ADHD, especially neurofeedback and virtual reality. The Integrated Visual and Auditory Continuous Performance Test (IVA/CPT), which is ba¬sed on the DSM-IV diagnostic criteria, allows hyperactive-impulsive symptoms and inattention to be assessed at the visual and auditory level. The goal of this study is to determine whether the IVA/CPT is a useful scale to measure the therapeutic efficacy of neurofeedback. A total of 16 male and female subjects ages 7-14 with a diagnosis of ADHD who had been randomly assigned to neurofeedback treatment participated in the study. Attention and hyperactivity were the variables evaluated in the pre- and post-treatment phases. Through comparisons of means and effect size calculation, the efficacy of neurofeedback was estimated according to the children’s performance in the auditory and visual variables of the CPT/IVA. The data obtained reveal signifi¬cant improvement in self-control and symptoms of inattention following the treatment

Tests de ejecución continua: Integrated Visual and Auditory Continuous Performance Test (IVA/CPT) y TDAH. Una revisión

En los últimos años son frecuentes las publicaciones sobre el Trastorno por Déficit de Atención e Hiperactividad (TDAH) que utilizan los test de ejecución continua, siendo escasos los trabajos que permiten una visión global de las numerosas utilidades de estos instrumentos y la variedad de los mismos En este trabajo se describen las características de este tipo de test, en relación a su uso y aplicación en el TDAH, haciendo espe¬cial hincapié, posteriormente, en la relación entre el Integrated Visual and Auditory Continuous Performance Test (IVA/CPT) y el TDAH. Con este propósito, se han revisado las publicaciones científicas sobre el tema, abarcando el periodo de tiempo desde 1990 hasta Mayo de 2015. Los re-sultados observados en las 139 investigaciones recogidas sugieren dos utilidades principales: 1) Instrumentos complementarios para la evaluación y diagnóstico del Trastorno por Déficit de Atención con Hiperactividad y, 2), como prueba para la valoración de la eficacia de las intervenciones terapéuticas. Se exponen las ventajas e inconvenientes de estos instrumentos y la proyección futura de los mismos.Continuous Performance Tests: Integrated Visual and Auditory Continuous Performance Test (VAT / CPT) and ADHD. A review. A review. In recent years, publications about Attention Deficit Hyperactivity Disorder (ADHD) using continuous performance tests are frequent, although there are few studies that allow us to have an overview of the numerous uses of these instruments and their variety. This work describes and analyzes the characteristics of this kind of tests, in relation to its use and application in ADHD with particular emphasis in the relationship between ADHD and the Integrated Visual and Auditory Continuous Performance Test (IVA/CPT) (Sandford and Turner, 2002). For this purpose, the scientific literature on the subject, covering the period from 1990 to May 2015 was reviewed. The results observed in 139 collected researches suggest two main utilities: 1) as a complementary tool for evaluation and diagnosis of ADHD and, 2) regarding treatment, as a test to assess the efficacy of therapeutic interventions. The advantages and disadvantages of these instruments and its future projection are exposed

Aplicación del CPT/IVA en la valoración de los efectos del neurofeedback en el TDAH

Los tests de ejecución continua (Continuous Performance Test-CPT) han resultado eficaces para monitorizar los efectos de tra¬tamientos aplicados en TDAH, especialmente Neurofeedback y Realidad Virtual. El Integrated Visual and Auditory Continuous Performance Test (IVA/CPT) basado en los criterios diagnósticos del DSM-IV, permite valorar, visual y auditivamente, sinto¬matología hiperactiva-impulsiva e inatención. El objetivo de este estudio es precisar la utilidad del IVA/CPT como medida de eficacia terapéutica respecto al neurofeedback. Han participado 16 sujetos de ambos sexos entre 7 y 14 años, con diagnóstico de TDAH, asignados aleatoriamente a tratamiento de Neurofeedback. Se han evaluado las variables atención e hiperactividad en las fases pre- y post-tratamiento. La eficacia del neurofeedback, a partir de contrastes de medias y cálculo del tamaño de efec¬to, se ha estimado según la ejecución de los niños en las variables del CPT/IVA, auditivo y visual, respectivamente. Los datos obtenidos revelan mejoría significativa tanto en control de comportamiento como respecto a sintomatología atencional tras el tratamiento.Continuous Performance Tests (CPT) have proven effective for monitoring the effects of treatments for ADHD, especially neurofeedback and virtual reality. The Integrated Visual and Auditory Continuous Performance Test (IVA/CPT), which is ba¬sed on the DSM-IV diagnostic criteria, allows hyperactive-impulsive symptoms and inattention to be assessed at the visual and auditory level. The goal of this study is to determine whether the IVA/CPT is a useful scale to measure the therapeutic efficacy of neurofeedback. A total of 16 male and female subjects ages 7-14 with a diagnosis of ADHD who had been randomly assigned to neurofeedback treatment participated in the study. Attention and hyperactivity were the variables evaluated in the pre- and post-treatment phases. Through comparisons of means and effect size calculation, the efficacy of neurofeedback was estimated according to the children’s performance in the auditory and visual variables of the CPT/IVA. The data obtained reveal signifi¬cant improvement in self-control and symptoms of inattention following the treatment

Preliminary Validation and Gender Invariance of the Technology Anxiety Scale in Older Spanish Adults

Background: Technology anxiety is more prevalent in older people and can compromise their functionality in an increasingly techno-dependent world. There are no validated instruments to assess it in older Spanish people. Method: A technology anxiety scale was cross-culturally adapted and applied to 355 Spaniards (66% women, M = 78.63, SD = 6.77). Two models were tested by confirmatory factor analysis: a one-dimensional model (technology anxiety) and a model with two correlated factors (fear and confidence in technology, respectively). Results: Both showed an adequate fit, although higher in the two-factor correlated model (χ2 = 243.797, df = 26, CFI = .969, TLI = .945, SRMR = .039). Concurrent validity was confirmed through correlations with psychological well-being, quality of life, and health satisfaction. Configural, metric, and scalar factorial gender invariance were also verified. Conclusion: Our data support the preliminary validity of the Technology Anxiety Scale in older Spanish men and women

Achromatic linear retarder with tunable retardance

We present a universal design and proof-of-concept of a tunable linear retarder of uniform wavelength response in a broad spectral range. It consists of two half-wave retarders (HWR) between two quarter-wave retarders (QWRs), where the uniform retardance can be tuned continuously by simply rotating one of the HWRs. A proof-of-concept of this design is built by using commercially available Fresnel rhomb retarders that provide retardation with almost wavelength uniformity in the visible and near infrared from 450 to 1550 nm. The design is universal, since other achromatic QWRs and HWRs could also be employed. The system is experimentally demonstrated to control the state of polarization of a supercontinuum laser

Aplicación de la metodología aprendizaje/servicio en las prácticas de laboratorio del área de química física

Memoria ID-155. Ayudas de la Universidad de Salamanca para la innovación docente, curso 2019-2020

Libro de Apeo y Repartimiento de La Zubia (Granada) de 1571-1593

Edicion y estudio del Libro de Apeo y Repartimiento de la Zubia, 1572-1593.Grupo Investigación HUm-165: Patrimonio, Cultura y Ciencia Medievales Manuel Espinar Moreno,. Centro Documental del Marquesado del Cenete Departamento de Historia Medieva

Laboratorio virtual de química física

Memoria ID 107. -Ayudas de la Universidad de Salamanca para la innovación docente, curso 2020-2021

Spectral performance of a zero-order liquid-crystal polymer commercial q-plate for the generation of vector beams at different wavelengths

Liquid-crystal polymer q-plates are commercial devices for generating vector beams at the design wavelength where the device exhibits half-wave (HW) retardance. Since they are not voltage addressable, the operational wavelength remains fixed. In this work we perform a broadband spectral characterization of the q-plate retardance as a function of wavelength, /(k), and identify the wavelengths with retardance values relevant for vector beam generation (p, p/2, and 3p/2). The wavelength is then used as a tuning parameter to change the device performance from a HW q-plate to a positive-QW or a negative-QW q-plate. These performances are analyzed using the Jones matrix formalism. We present a simple procedure to derive the polarization distribution of the vector beams expected at these QW wavelengths, as a superposition of the input polarization state and the output state of a HW q-plate. Experimental results using the red and blue lines of an Ar-Kr laser and an IR laser diode of 980 nm confirm the theoretical predictions. We show that for input linearly polarized light of 980 nm and 488 nm the device generates hybrid vector beams (where the ellipticity varies with the azimuthal angle), while for 647 nm pure radial vector beams with constant ellipticity are obtained. These results could extend the use of commercial q-plates for multicolour vector beam applications