Search results for "TRACKING"
showing 9 items of 709 documents
A Cluster Analysis Approach to Profile Men and Women’s Volley Positions in Professional Tennis Matches (Doubles)
2021
(1) Background: Tennis ball tracking technology allows the aquirement of novel and reliable data about several performance indicators, such as volley positions. This information is key to understand match dynamics in doubles tennis and to better help preparing players for the demands they will face in match play. As such, the purpose of this study was to describe and compare the different types of volley positions in men’s and women’s doubles professional tennis. (2) Methods: Ball tracking data were collected for 46 women (Billie Jean King Cup) and 96 men’s doubles matches (Davis Cup). The variables used were the distance to the net, the distance to the centre of the court and the height of…
Analysing tourist mobility: current issues and future challenges
2013
Tourism statistics are generally based on data collected only at one point of the travel, which, depending on the perspective of interest, can be the originating region or the destination one. Indeed, many tourism trips imply the visit to more than a single destination, since tourists move to visit several attraction to several destination or within the same destination. The analysis of tourist mobility presents several issues which are related both to the collection of information on multidestination trip behaviour and to the analysis of complex information such as the ones related with tourist itineraries. The present work aims at reviewing the main issues related with the analysis of tou…
Comparing the Effect of Product-Based Metrics on the Translation Process
2021
Characteristics of the translation product are often used in translation process research as predictors for cognitive load, and by extension translation difficulty. In the last decade, user-activity information such as eye-tracking data has been increasingly employed as an experimental tool for that purpose. In this paper, we take a similar approach. We look for significant effects that different predictors may have on three different eye-tracking measures: First Fixation Duration (duration of first fixation on a token), Eye-Key Span (duration between first fixation on a token and the first keystroke contributing to its translation), and Total Reading Time on source tokens (sum of fixations…
Adaptive Control of Underactuated Underwater Vehicles
2008
This paper deals with a control strategy for underactuated underwater vehicles whose target is trajectory tracking. A cascade approach is employed which brings to a control law consisting of: a) an outer loop, obtained from the vehicle kinematic model, which forces this model to track the reference trajectory; b) an inner adaptive control loop which forces the system to track the reference signals given by the outer control loop. Conditions for asymptotic tracking of the trajectory and boundness of the unactuated velocities are given. Simulation tests illustrate the proposed approach.
Mathematical models and simulation of Costas loops
2013
Estudio de la deformidad del tejido cardiaco (strain) tras un infarto de miocardio con elevación del segmento ST mediante la técnica de resonancia ma…
2020
El presente trabajo, que se dividió en tres partes, ha sido destinado al estudio de la deformación del tejido cardiaco (strain) mediante resonancia magnética cardiaca (RMC) tras un infarto agudo de miocardio con elevación del segmento ST (IAMEST). Para ello se realizó un estudio de la caracterización, dinámica, implicación estructural y valor pronóstico de los diferentes índices de strain derivados de la RMC. La RMC se ha convertido en la última década en la técnica gold-standard para el estudio y la caracterización del tejido cardiaco después de sufrir un IAMEST. Durante los últimos años, el tissue tracking (TT) ha emergido cómo una técnica de imagen que permite evaluar de forma cuantitati…
The ALICE experiment at the CERN LHC
2008
Journal of Instrumentation 3(08), S08002 (2008). doi:10.1088/1748-0221/3/08/S08002
El impacto del entorno residencial en el caminar de mujeres y hombres jovenes. Evidencias de los commuters de la Universidad Autónoma de Barcelona
2020
El objetivo de este estudio es el de explorar la influencia de las características del entorno residencial en los patrones de caminar de hombres y mujeres, mediante la utilización de datos de movimiento geolocalizados o tracking. Para ello, se ha seleccionado un grupo de jóvenes adultos que estudian o trabajan en la Universitat Autònoma de Barcelona y cuyo desplazamiento al lugar de estudio/trabajo se realiza fuera de su municipio de residencia, requiriendo así el uso de un medio de transporte motorizado. A través de una aplicación de geolocalización para smartphone se han analizado datos de movilidad de 1.194 días de participación correspondientes a 199 personas. Los resultados obtenidos i…
A Comparative Eye Tracking Study of Usability—Towards Sustainable Web Design
2021
Websites are one of the most frequently used communication environments, and creating sustainable web designs should be an objective for all companies. Ensuring high usability is proving to be one of the main contributors to sustainable web design, reducing usage time, eliminating frustration and increasing satisfaction and retention. The present paper studies the usability of different website landing pages, seeking to identify the elements, structures and designs that increase usability. The study analyzed the behavior of 22 participants during their interaction with five different landing pages while they performed three tasks on the webpage and freely viewed each page for one minute. Th…