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Secure Low-cost Solution for Elder's eCardio Surveillance
Publication . Mendes, Jorge; Simões, Heitor; Rosa, Patrício; Costa, Nuno; Rabadão, Carlos; Pereira, António
In recent years we have assisted to the growth in two major areas related to eHealth: one dedicated to the conception, creation and implementation of biosensors and another dedicated to the monitoring of vital parameters provided by these sensors. Furthermore, the exponential growth of mobile technologies and the widespread use of mobile devices embedding standards of next-generation Personal Area Networks (PAN), such as the Bluetooth Low Energy, come to revolutionize the way the monitoring of vital parameters is done, now following the anytime and anywhere approach with further energy efficiency. The work presented in this paper brings together the technologies addressed above in order to create a ready-to-use, simple, efficient, safe, low-cost and compatible solution capable of monitoring vital parameters and generate alerts in the presence of abnormal values. The tests showed the simplicity of the system setup, which is an important feature for elderly, demonstrated the reliability of measuring values and alarm rising, and also the warranty of data confidentiality.
Location based Services for the Blind Supported by RFID Technology
Publication . Fernandes, H.; Filipe, Vitor; Costa, Paulo; Barroso, João
Nowadays, navigation systems are widely used to find the correct path, or the quickest, between two places. These systems use the Global Positioning System (GPS) and only work well in outdoor environment since GPS signals cannot easily penetrate and/or are greatly degraded inside of buildings. Several technologies have been proposed to make navigation inside of buildings possible. One such technology is Radio-Frequency Identification (RFID). In the case of outside environments, some hybrid systems have been proposed that use GPS as main information source and RFID for corrections and location error minimization. In this article we propose a navigation system that uses RFID as the main technology to guide people with visual impairment in unfamiliar environments, both indoor and outdoor, complementing the traditional white cane and providing information about the user's geographical context.
Prevalence of quinolone resistance determinants in non-typhoidal Salmonella isolates from human origin in Extremadura, Spain
Publication . Campos, Maria Jorge; Palomo, Gonzalo; Hormeño, Lorena; Herrera-León, Silvia; Domínguez, Lucas; Vadillo, Santiago; Píriz, Segundo; Quesada, Alberto
Resistance to the quinolones nalidixic acid (NAL) and ciprofloxacin (CIP) and the occurrence of quinolone resistance determinants have been investigated in 300 non-typhoidal Salmonella from human origin, isolated in the years between 2004 and 2008, in 6 hospitals within Extremadura (Spain). Salmonella Enteritidis was the major serotype found among quinolone-resistant isolates, most of which were clustered by clonal analysis to a single clone, which presented D87 or S83 substitutions in GyrA. Eleven isolates presented the non-classical quinolone resistance phenotype (resistance to CIP and susceptibility to NAL), lacking mutations in the quinolone resistance determinant region of topoisomerase genes. Among them, one Salmonella Typhimurium isolate carried a qnrS1 gene in a low-molecular-weight plasmid, pQnrS1-HLR25, identical to plasmids previously found in the UK, Taiwan, and USA. The occurrence of this genetic element could represent a risk for the horizontal transmission of quinolone resistance among Enterobacteriaceae in the Iberian Peninsula.
A multi-objective GRASP procedure for reactive power compensation planning
Publication . Antunes, Carlos Henggeler; Oliveira, Eunice; Lima, Paulo
A multi-objective approach based on the GRASP (Greedy Randomized Adaptive Search Procedure) meta-heuristic is proposed to provide decision support in the problem of locating and sizing capacitors for reactive power compensation in electrical radial distribution networks. The installation of capacitors (local sources of reactive power) in the network is aimed at correcting the power factor to improve the quality of service, particularly the network voltage profile, and reduce energy losses and power peak. The mathematical model explicitly considers two conflicting objective functions: the minimization of the network active losses and the minimization of the capacitor installation cost. An algorithmic approach based on GRASP is presented for the characterization of the non-dominated solution set.
Perceção dos enfermeiros sobre a comunicação segura na transmissão de informação que garante a continuidade de cuidados na pessoa hemodialisada
Publication . Campos, Catarina Alexandra Ferreira; Mata, Ema Soraia Fazenda