An intelligent strategy for tactical movements of UAVs in disaster scenarios

Unmanned Aerial Vehicles (UAVs) are envisioned as flexible and fast-deploying communication network for disaster scenarios, where the typical communication infrastructure is likely to be malfunctioning. A few works propose UAVs for building communication links autonomously between rescue team’s members in disaster scenarios. The techniques used are usually based on navigation, positioning, and signal strength processing. However, these techniques may not be enough if the objective is to provide communication services to the maximum number of victims and rescuers and not only to a few rescuers. In this situation, dissimilarity metrics, like the Jaccard distance, can provide information about whether the communication service provided to victims is efficient or not (e.g., providing a better distribution of the victims assigned to each UAV acting as service provider). We propose an intelligent strategy that allows UAVs to perform tactical movements in a disaster scenario, combining the Jaccard distance and artificial intelligence algorithms like hill climbing and simulated annealing. Our strategy maximizes the number of victims that are serviced by the UAVs while avoiding network disconnections. Also, a mobility model specifically developed for modelling the victims’ movements within the incident site of a disaster scenario is propose

On-siteDriverID: A secure authentication scheme based on Spanish eID cards for vehicular ad hoc networks

Security in Vehicle Ad Hoc Networks (VANETs) has been a topic of interest since the origins of vehicular communications. Different approaches have been followed as new security threats have emerged in the last few years. The approach of conditional privacy has been widely used as it guarantees authentication among vehicles but not revealing their real identities. Although the real identity of the vehicle can be traced by the authorities, the process to do that is time consuming and typically involves several entities (for instance road authorities that request the identification, license plate records bodies, a judge to allow revealing the identity associated to a license plate…). Moreover, this process is always subsequent to the detection of a road situation that requires knowing the real vehicle identities. However, in vehicular scenarios, authorities would beneficiate from knowing the real drivers’ identity in advance. We propose in this paper On-SiteDriverID, a secure protocol and its application which allows authorities’ vehicles to obtain drivers’ real identities rapidly and on demand on VANET scenarios. Thus, authorities would be able to gather information about drivers and vehicles, allowing them to act in a safer and better manner in situations such as traffic control duties or emergencies. The obtained simulation results in real VANET scenarios based on real maps guarantee that in the 60–70% of cases the proposed On-SiteDriverID successfully obtains the identity of the driver

An evaluation methodology for reliable simulation based studies of routing protocols in VANETs

Vehicular Ad hoc networks (VANETs) have attracted much attention in the last decade. Many routing protocols have been proposed for VANETs and their performance is usually evaluated and compared using simulation-based studies. However, conducting reliable simulation studies is not a trivial task since many simulation parameters must be configured correctly. The selected parameters configuration can considerably affect the simulation results. This paper presents a methodology for conducting reliable simulations of routing protocols in VANETs urban scenarios. The proposed methodology includes relevant simulation aspects such as measurement period, selection of source-destination pairs for the communication traffic flows, number of simulations, mobility models based on road city maps, performance metrics and different analyses to evaluate routing protocols under different conditions. The proposed methodology is validated by comparing the simulation results obtained for Ad Hoc On-Demand Distance Vector (AODV) routing protocol with and without using the proposed methodology. The obtained results confirm that by using the proposed methodology, we can achieve more reliable simulations of VANETs routing protocols.Universidad de Sevilla. V Plan Propio de InvestigaciónMinisterio de Economía y Competitividad DPI2013-44278-

First report of Solanum sisymbriifolium and S. americanum as Natural weed hosts of Tomato chlorosis virus (Genus Crinivirus) in South America.

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Neuropsychological Test Barcelona-2: Theoretical and Practical Aspects

The Barcelona test (TB) is an instrument of neuropsychological assessment, developed under the influence of Luria’s ideas, and published in 1990 [1]. It explores the main cognitive functions and allows the design of graphic profiles similar to those of the Boston Test for the diagnosis of aphasia. Objective: To present the theoretical and practical characteristics of a new version of the test, the Test Barcelona-2. The new and computerized versions of test structure is described here with six modules established: (1) Language-attention-orientation; (2) Reading and writing; (3) Motorpraxis; (4) Perception-gnosis; (5) Memory; (6) Abstraction-execution. As a novelty, test allows the selection for specific profiles: alpha, beta, abbreviated, aphasia, andecological-forensic approach. The types of variables condition a different statistical approach and a differentiated form of graphic expression. The new test presents a modular structure, which allows determining intra- and inter-module dissociations. Computerization greatly facilitates the work of the clinician. In the case of aphasia the test allows to differentiate easily all its clinical forms. Keywords: Test Barceona-2, neuropsychological test; computerized workstation, modular structur

UHMWPE/SBA-15 nanocomposites synthesized by in situ polymerization

Different nanocomposites have been attained by in situ polymerization based on ultra-high molecular weight polyethylene (UHMWPE) and mesoporous SBA-15, this silica being used for immobilization of the FI catalyst bis [N-(3-tert-butylsalicylidene)-2,3,4,5,6-pentafluoroanilinato] titanium (IV) dichloride and as filler as well. Two distinct approaches have been selected for supporting the FI catalyst on the SBA-15 prior polymerization. A study on polymerization activity of this catalyst has been performed under homogenous conditions and upon heterogenization. A study of the effect of presence of mesoporous particles and of the immobilization method is also carried out. Moreover, the thermal characterization, phase transitions and mechanical response of some pristine UHMWPEs and UHMWPE/SBA-15 materials have been carried out. Relationships with variations on molar mass, impregnation method of catalyst and final SBA-15 content have been established

Effect of the Safe Fall Programme on Children’s Health and Safety: Dealing Proactively with Backward Falls in Physical Education Classes

The aim of this study is to show that the implementation of the Safe Fall programme in physical education classes can help to reduce the negative effects of unintentional backward falls in the adolescent population, by teaching them how to protect themselves when falling. A quasi-experimental research design was applied in a sample of 120 children (M = 15.1 years, SD = 2.45), attending a secondary school in Seville (Spain). Data was collected on an ad hoc observation scale INFOSECA (which records five basic elements during a backward fall: position of the neck, the hands, the trunk, the hips, and the knees), applying descriptive, correlational, and contrast statistics. The criteria for considering statistical significance was p < 0.05 in McNemar’s test. The data indicates that learning safe and protected ways of falling backward is possible through the implementation of the Safe Fall programme, and no differences were found in terms of gender

Efectividad del consejo médico a pacientes alcohólicos y bebedores excesivos atendidos en consultas de atención primaria

ObjetivoComprobar la efectividad del consejo médico antialcohólico que se da en las consultas de atención primaria.DiseñoEstudio cuasi-experimental de tipo «antes-después», abierto, multicéntrico.EmplazamientoCatorce consultas médicas de atención primaria (7 rurales y 7 urbanas) de la provincia de Córdoba (España).ParticipantesUn total de 306 pacientes de ambos sexos, captados mediante búsqueda de casos, que presentaban un consumo de alcohol ≥ 35 (varones) y 21 (mujeres) U a la semana, y/o síndrome de dependencia alcohólica (SDA) (MALTS-O ≥ 11).IntervencionesA todos se les ofreció consejo médico breve antialcohólico y se les hizo un seguimiento para valoración de su estado a los 3 meses, 1 y 2 años.Mediciones principalesLa variable de respuesta fue la suma del consumo autorreferido, más valores normales de GGT, y la confirmación del familiar. El análisis del estudio fue por «intención de tratar».ResultadosDe los 306 pacientes incluidos, en un 95,1% de los casos se trataba de varones y un 78,4% presentaba SDA. Al cabo de 2 años, el 38,89% (IC del 95%, 32,2-44,3%) había alcanzado el objetivo terapéutico: un 23,85% se encontraba en abstinencia total y el 15,0% presentaba un consumo moderado de alcohol, por debajo del límite de riesgo. El comienzo del consumo excesivo antes de los 16 años (odds ratio [OR], 3,0885), vivir en un barrio marginal (OR, 3,2103), consumir tabaco (OR, 1,7187) y un test de CAGE positivo (OR, 1,9949) se asociaron al fracaso de la intervención (p < 0,05).ConclusionesSe demuestra la alta efectividad del consejo antialcohólico impartido por el médico de familia en condiciones habituales de consulta, tanto en bebedores excesivos como en aquellos con SDA.AimTo determine the effectiveness of medical counseling for alcohol abuse, when it is provided in primary care centers.DesignQuasi-experimental, open, multicenter before-after study.Setting14 primary care physician's practices (7 rural, 7 urban) in the province of Córdoba (Spain).Participants306 patients of both sexes, recruited with a case-finding strategy, who consumed ≥35 (men) or ≥21 (women) IU per week, or who had alcohol dependence syndrome (ADS) (MALTS score O≥11).InterventionsAll patients were offered brief counseling to reduce drinking, and all were followed to evaluate their status 3 months, 1 year and 2 years later.Main measuresThe response variable was selfreported alcohol consumption together with normal GGT values or confirmation of alcohol consumption by a relative. The results were subjected to intention-to-treat analysis.ResultsOf the 306 patients included in the study, 95.1% were men and 78.4% had ADS. After 2 years 38.89% (95% CI, 32.2%-44.3%) had attained their treatment goal: 23.85% were in complete abstinence, and 15.0% consumed moderate amounts of alcohol below the limit considered to indicate risk. Starting excessive consumption at less than 16 years of age (odds ratio [OR], 3.0885), living in a slum (OR, 3.2103), smoking (OR, 1.7187), and a positive CAGE test (OR, 1.9949) were associated with failure of the intervention (P<.05).ConclusionsCounseling provided by the family doctor was highly effective under the usual conditions of general practice, both for patients with excessive alcohol consumption and for patients with con ADS

Quantification of impacts in artistic gymnastics with accelerometry: an approximation

Intensity and volume of training in Artisti Gymnastics are increasing as the sooner athlete's age of incorporation creating some disturbance in them

Efectos analgésicos del ejercicio físico en pacientes con dolor crónico musculoesquelético durante el confinamiento por la pandemia COVID-19.

Introducción: El confinamiento vivido durante la pandemia del COVID-19 en España durante más de dos meses, podría afectar severamente a la condición y calidad de vida de los pacientes que sufren dolor crónico musculoesquelético. Teniendo en cuenta los efectos analgésicos que el ejercicio físico puede generar, gran parte de la población ha realizado ejercicio físico en sus domicilios como mecanismo del control del dolor, durante este periodo. Objetivo: El objetivo de este estudio fue conocer el tipo y la dosis de ejercicio físico realizado, así como la percepción de los pacientes en la reducción del dolor, durante el periodo de confinamiento por el COVID-19. Material y método: Se realizó una encuesta ad hoc a través de Google Forms a 86 pacientes para conocer su estado, el tipo de ejercicio que realizaron y la cantidad de ejercicio, así como si habían percibido una reducción de su dolor durante el periodo de confinamiento. Resultados: La intensidad de dolor disminuyó de forma significativa (p=0,001) cuando se hizo algún tipo de ejercicio físico. El ejercicio de fuerza fue elegido por el 51% de la población de forma exclusiva, y las frecuencias y el tiempo de sesión no fueron diferentes de forma significativa entre los sujetos que sintieron una reducción del dolor y los que no. Conclusión: Una programación de ejercicio físico de 4 días a la semana, durante al menos 50 minutos y con intensidades del 77% de FCmax de ejercicio aeróbico o de fuerza sería recomendable en un paciente con dolor crónico, como estrategia para la reducción del dolor. Los resultados de nuestro estudio no aconsejan, para pacientes con dolor crónico, sesiones de terapia combinada, independientemente de la localización primaria del dolor.post-print118 K