Perceived effectiveness (vs Use) of coping (ACSQ) in soccer players

Este estudio analiza la estructura factorial de la versión española (Kim, Duda, Tomás y Balaguer, 2003) del Cuestionario de Aproximación al Afrontamiento en el Deporte (Approach to Coping in Sport Questionnaire, ACSQ-1, Kim, 1999; Kim y Duda, 1997) en 562 futbolistas. Adicionalmente, se plantea la validación de una versión adaptada del ACSQ diseñada para valorar la percepción de efectividad. Los resultados del CFA ponen de manifiesto un ajuste satisfactorio para ambos modelos ACSQ-uso y ACSQ-efectividad, observándose mejores indicadores para el modelo de efectividad (x2/gl=2.57; CFI= .913; TLI= .904; RMSEA= .058). Por otro lado, las relaciones de las diferentes dimensiones de afrontamiento en su versión uso y en su versión efectividad con las variables externas consideradas (ansiedad y autoconfianza) ponen de manifiesto el diferente papel de ambos criterios, y la necesidad, por lo tanto, de contemplar ambos indicadores en la valoración del coping en el ámbito deportivoThis study examines the factorial structure of the Spanish version (Kim, Duda, Tomás y Balaguer, 2003) of the Approach to Coping in Sport Questionnaire (ACSQ-1, Kim, 1999; Kim y Duda, 1997) in 562 soccer players. Additionally, a second aim of this study is to analyze the psychometric properties of an adapted version of ACSQ designed to assess perception of effectiveness. The results of CFA provided a satisfactory fit for both models ACSQ-use and ACSQ-effectiveness, showing better indexes for effectiveness model (x2/df = 2.57; CFI = .913; TLI = .904; RMSEA = .058). Moreover, the relations between ACSQ-use, ACSQ-effectiveness and the external variables (anxiety and self-confidence) show the different roles of both criteria, and the need, therefore, of contemplate both indicators in the assessment of coping in spor

CAMERA – Mobility Report 3

The EU-funded CAMERA (Coordination and Support Action for Mobility in Europe: Research and Assessment) project is coordinated by The Innaxis Foundation and Research Institute (Spain), in partnership with the University of Westminster (UK), Bauhaus Luftfahrt (Germany), EUROCONTROL (France-Belgium) and DeepBlue (Italy). It was launched in November 2017 for a duration of 48 months. The project investigates research initiatives into the European transport system from 2007, with a special focus on air travel, its integration with other transport modes, and passenger experience. Each year CAMERA assesses projects from different research programmes to deliver a European view of the state of aviation and mobility-related research activities. For this, the team relies on two main corner stones to its project approach: 1) the systematic development of a Performance Framework to provide a means of measuring; and 2) state-of-the-art algorithms for an automated analysis of the research projects

Optimal Production Planning of Concentrated Apple and Pear Juice Plants

This paper presents a mathematical model aimed at optimizing the yearly profit of a concentrated apple and pear juice plant through the appropriate design of its production plan. This study assumes a business scenario where the products are devoted to the international market and therefore the production schedule is dictated by a fluctuating prices scenario due to the worldwide supply/demand tradeoff. Moreover, raw fruit is available only during the relatively short harvest season and suffers juice yield reduction during storage. In this context, decisions related to the manufacturing of each juice variety to exploit favorable prices, while minimizing juice yield loss due to fruit aging are not intuitive. Scenario studies, together with sensitivity analysis on some model parameters are developed to illustrate the performance of the proposed approach.Sociedad Argentina de Informática e Investigación Operativ

Optimal Production Planning of Concentrated Apple and Pear Juice Plants

This paper presents a mathematical model aimed at optimizing the yearly profit of a concentrated apple and pear juice plant through the appropriate design of its production plan. This study assumes a business scenario where the products are devoted to the international market and therefore the production schedule is dictated by a fluctuating prices scenario due to the worldwide supply/demand tradeoff. Moreover, raw fruit is available only during the relatively short harvest season and suffers juice yield reduction during storage. In this context, decisions related to the manufacturing of each juice variety to exploit favorable prices, while minimizing juice yield loss due to fruit aging are not intuitive. Scenario studies, together with sensitivity analysis on some model parameters are developed to illustrate the performance of the proposed approach.Sociedad Argentina de Informática e Investigación Operativ

Use of Single Board Computers as Smart Sensors in the Manufacturing Industry

The continuously growing presence of cyber-physical systems in the industry, especially in the field of processes automation and control, represents the paradigm of the so called fourth industrial revolution, in which the systems are smarter, faster and more optimized by means of artificial intelligence, control systems and sensors networks. The presence of ICT and automation systems guarantees energy and other resources efficiency along the whole value chain of industrial processes. Especially important is the case of the smart sensors, in which a conventional sensor is equipped with interfacing methodologies for signal processing and decision making. In this article the capabilities of using a single board computer as a smart sensor are explored.Postprint (published version

Retention of improvement in gait stability over 14 weeks due to trip-perturbation training is dependent on perturbation dose

© 2018 Elsevier Ltd Perturbation training is an emerging approach to reduce fall risk in the elderly. This study examined potential differences in retention of improvements in reactive gait stability over 14 weeks resulting from unexpected trip-like gait perturbations. Twenty-four healthy middle-aged adults (41–62 years) were assigned randomly to either a single perturbation group (SINGLE, n = 9) or a group subjected to eight trip-like gait perturbations (MULTIPLE, n = 15). While participants walked on a treadmill a custom-built brake-and-release system was used to unexpectedly apply resistance during swing phase to the lower right limb via an ankle strap. The anteroposterior margin of stability (MoS) was calculated as the difference between the anterior boundary of the base of support and the extrapolated centre of mass at foot touchdown for the perturbed step and the first recovery step during the first and second (MULTIPLE group only) perturbation trials for the initial walking session and retention-test walking 14 weeks later. Group MULTIPLE retained the improvements in reactive gait stability to the perturbations (increased MoS at touchdown for perturbed and first recovery steps; p < 0.01). However, in group SINGLE no differences in MoS were detected after 14 weeks compared to the initial walking session. These findings provide evidence for the requirement of a threshold trip-perturbation dose if adaptive changes in the human neuromotor system over several months, aimed at the improvement in fall-resisting skills, are to occur

Función de apantallamiento de interferencia electromagnética de pastas de cemento con materiales carbonosos y cenizas volantes procesadas

The study described in this article explored the effect of adding different types of carbon materials (graphite powder and three types of carbon fibre), fly ash (with 5.6%, 15.9% and 24.3% Fe2O3), and a mix of both on electromagnetic interference (EMI) shielding in Portland cement pastes. The parameters studied included the type and aspect ratio of the carbonic material, composite material thickness, the frequency of the incident electromagnetic radiation and the percentage of the magnetic fraction in the fly ash. The findings showed that the polyacrylonitrile-based carbon fibres, which had the highest aspect ratio, provided more effective shielding than any of the other carbon materials studied. Shielding was more effective in thicker specimens and at higher radiation frequencies. Raising the magnetic fraction of the fly ash, in turn, also enhanced paste shielding performance. Finally, adding both carbon fibre and fly ash to the paste resulted in the most effective EMI shielding as a result of the synergies generated.En el presente trabajo se investiga la influencia de la adición de diferentes tipos de materiales carbonosos (polvo de grafito y 3 tipos de fibra de carbono), de una ceniza volante con diferentes contenidos de fase magnética (5,6%, 15,9% y 24,3% de Fe2O3) y de una mezcla de ambos, sobre la capacidad de apantallar interferencias electromagnéticas de pastas de cemento Pórtland. Entre los parámetros estudiados se encuentra: el tipo de material carbonoso, la relación de aspecto del material carbonoso, el espesor del material compuesto, la frecuencia de la radiación electromagnética incidente y el porcentaje de fracción magnética en la ceniza volante. Los resultados obtenidos indican que entre los materiales carbonosos estudiados son las fibras de carbono basadas en poliacrilonitrilo con una mayor relación de aspecto las que dan mejores resultados de apantallamiento. Al aumentar el espesor del material compuesto o la frecuencia de radiación también aumenta la eficacia del apantallamiento. En lo que respecta a la ceniza volante, el incremento de la fracción magnética de la ceniza incrementa el nivel de apantallamiento. No obstante, los resultados más eficaces se obtienen por la adición conjunta de fibras de carbono y ceniza volante debido a un efecto sinérgico

Single versus double experimental bile duct ligation model for inducing bacterial translocation

Background: Double common bile duct ligation plus section in rats is used as a model for bacterial translocation, a phenomenon that has been correlated with the degree of liver damage. This study analyzes whether a simpler variant of the technique is also a valid model to study bacterial translocation. Methods: Fifty-six male Sprague Dawley rats underwent one of three surgical interventions: a) proximal double ligation and section of the common bile duct; b) proximal simple ligation of the bile duct; and c) sham operation. Bacterial translocation was measured by cultures of mesenteric lymph nodes, blood, spleen and liver. Stool culture and histological analysis of liver damage were also performed. Results: The incidence of bacterial translocation in SBL and DBDL groups was 23,5% and 25% respectively. Mortality was similar between ligation groups (11.2% versus 10%). Liver cirrhosis developed in the group of double ligation and section (100% of the animals at 4 weeks), while portal hypertension appeared starting at week 3. None of the animals submitted to simple ligation developed liver cirrhosis. Conclusions: Simple bile duct ligation is associated with a similar incidence of bacterial translocation as double ligation, but without cirrhosis or portal hypertension