The eye is not a centered system. The line of sight connects the fovea with the center of the pupil and is usually tilted in the temporal direction. Thus, off-axis optical aberrations, mainly coma and oblique astigmatism, are introduced at…

A personal navigation system is proposed in the present paper. This system is based on the use of inertial sensors and will be a complement for the Global Positioning System in places where GPS signals are not available. Such places…

El propósito de este estudio era analizar la evolución de la velocidad y frecuencia de
brazada críticas durante 12 semanas de entrenamiento en nadadores de un mismo grupo
de edad. En esta investigación participó un grupo de catorce nadadores de…

Kogelnik's coupled-wave (CW) theory has been used for decades to predict the diffraction efficiency of volume diffraction gratings. Although this theory has been applied with success to volume diffraction gratings recorded under a great variety of experimental conditions, its predictions…

The visual and optical anisotropies of metallic and pearlescent samples have been evaluated using a multi-gonio-spectrophotometer and by adapting a gonio-template over the instrument aperture for measuring the relative spectral reflectance factor when the sample is rotated around an axis…

GlowBots are small tangible, communicating and interactive robots that show eye-catching visual patterns on a round LED display. This paper details the development of the GlowBots from the early user-oriented design phase, through hardware and software development and onto preliminary…

El objetivo de este estudio teórico fue evaluar la adecuación conceptual,
la aplicabilidad y las propiedades métricas de las medidas de depresión empleadas en
la investigación con muestras de personas mayores españolas. Para ello se realizaron
búsquedas electrónicas en las…

Outsourcing, a management practice strongly consolidated within the area of Information Systems, is currently going through a stage of unstoppable growth. This paper makes a proposal about the main reasons which may lead firms to adopt Information Systems Outsourcing. It…

This paper presents a multilayered architecture that enhances the capabilities of current QA systems and allows different types of complex questions or queries to be processed. The answers to these questions need to be gathered from factual information scattered throughout…

Este tutorial mostra com buscar tant el factor d'impacte d'una revista com les revistes amb major factor d'impacte d'una temàtica en el Journal Citation Reports (JCR).