Angel de Castro

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The growth of sensor networks during the last years is a fact and within this field, wireless sensor networks are growing particularly as there are many applications that demand the use of many nodes, even hundreds or thousands. More and more applications are emerging to solve several problems in data acquisition and control in different environments,(More)
The fractures of the scapula are not very frequent, an incidence around the 0,4 and 1% of the fractures that affect the upper limb. The acromion fracture means the 7% of the fractures that affect to the scapula. They usually appear in politraumatized patients with more serious lesions that can mask them and postpose this way their diagnosis and treatment.(More)
The goal of this work is to determine whether relationship power in couples and sexual double standard can predict the risk of sexually transmitted infections/human immunodeficiency virus (STI/HIV) as a function of cultural and gender differences. The sample was made up of 689 adolescents living in Spain, of both sexes, aged between 14 and 19 years, who(More)
Sensor networks have reached a great relevance during the last years. The idea is to use a high number of nodes measuring different physical parameters in several environments, which implies different research challenges (low power consumption, communication protocols, platform hardware design, etc). There is a tendency to use modular hardware nodes in(More)
The goal of this study was to analyze how worry about sexually-transmitted infections (STI) and HIV influences attitudes and self-efficacy towards condom use, HIV-related knowledge, HIV-perceived susceptibility and HIV-misconceptions in a multicultural sample in Spain. The sample was composed of 3,051 adolescents aged between 14 and 19 years old who lived(More)
Low-cost robots are characterized by low computational resources and limited energy supply. Path planning algorithms aim to find the optimal path between two points so the robot consumes as little energy as possible. However, these algorithms were not developed considering computational limitations (i.e., processing and memory capacity). This paper presents(More)
This paper presents a mapping system that is suitable for small mobile robots. An ad hoc algorithm for mapping based on the Occupancy Grid method has been developed. The algorithm includes some simplifications in order to be used with low-cost hardware resources. The proposed mapping system has been built in order to be completely autonomous and unassisted.(More)
This work proposes two methods to determine the resolution of state variables in models of switching-mode power converters. The target models are intended for hardware-in-the-loop, i.e., closed-loop emulation using a model of the power converter implemented in digital hardware with the controller in its final implementation. The focus here is on the(More)