9,888 research outputs found
Why a New Representation Model for Games: The Code Form
No full textCopyright © 2015 M. C. P. Matos and M. A. M. Ferreira. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The aim of this work is to present a representation model of games which will establish the characteristics of each game with complete rigour. This model is presented emphasizing applications of theory, as much or more than the theory itself due to thinking, on the one hand, that applications help understand theory, and on the other, that applications illustrate the process of model building. Thus, this model is intended to illustrate the full rigour games both in terms of information, and in terms of real time structure of the games
Adaptation, reliability and validity of health-related quality of life questionnaires: disabkids chronic and specific diabetes disease in children and adolescents with diabetes mellitus type 1
No full textAlonso Rubio, P., Bahíllo Curieses, M.P., Prieto Matos, P., Bertholt Zuber, M.L., Martín Alonso, M.M., Murillo Vallés, M., Chueca Guindulain, M.J., Berrade Zubiri, S., Huidobro Fernández, B., Prado Carro, A.M., Rodríguez Estévez, A., Rica Echevarría, I., Grau Bolado, G., Díez López, I., Fernández Ramos, M.C., Rodríguez Dehli, C., Riaño-Galán, I
Reliability and construct validity of Yo-Yo tests in untrained and soccer-trained school-girls aged 9-16
No full textPurpose: The reliability and construct validity of three age-adapted-intensity Yo-Yo tests were evaluated in untrained (n=67) vs. soccer-trained (n=65) 9-16-year-old school-girls. Methods: Tests were performed 7 days apart for reliability (9-11-year-old: Yo-Yo intermittent recovery level 1 children’s test; 12-13-year-old: Yo-Yo intermittent endurance level 1; and 14-16-year-old: Yo-Yo intermittent endurance level 2). Results: Yo-Yo distance covered was 43% (747±364 vs. 522±162 m), 83% (1236±514 vs. 674±231 m) and 137% (679±348 vs. 286±67 m) greater (P≤0.010) for the soccer-trained than for the untrained girls aged 9-11, 12-13 and 14-16, respectively. Typical errors of measurement for Yo-Yo distance covered, expressed as a percentage of the coefficient of variation (confidence limits), were 10.1% (8.1-13.7%), 11.0% (8.6-15.4%) and 11.6% (9.2-16.1%) for soccer players, and 11.5% (9.1-15.8%), 14.1% (11.0-19.8%) and 10.6% (8.5-14.2%) for untrained girls, aged 9-11, 12-13 and 14-16, respectively. Intraclass correlation coefficient values for test-retest were excellent (0.795-0.973) in both groups. No significant differences were observed in relative exercise peak heart rate (%HRpeak)between groups during test and retest. Conclusion: The Yo-Yo tests are reliable for determining intermittent-exercise capacity and %HRpeak for soccer players and untrained 9-16-year-old girls. They also possess construct validity with better performances for soccer players compared to untrained age-matched girls, despite similar %HRpeak
Agent-Based Contracting in Virtual Enterprises
No full textVirtual Enterprises (VEs) use software agents (SAs) to reduce costs, speed up operations, and increase efficiency and competitiveness. Agents can carry out negotiations and make contracts without any human intervention. This makes them useful both in negotiations to set up a VE and in contracting with VE partners. Agents raise legal problems about the relevance and validity of their actions. The law may not always offer a solution to agent-based interactions. This paper investigates whether current laws are suitable to regulating agents and what new rules may need to be introduced
Replication package for: "The Welfare Effects of Mobile Internet Access - Evidence from Roam-Like-At-Home"
No full text<p>Quinn, M., Godhino de Matos, M. and Peukert, C., 2023, "The Welfare Effects of Mobile Internet Access - Evidence from Roam-Like-At-Home", Economic Journal</p>
Measurement of associated W+ charm production in pp collisions at √s=7 TeV
No full textOpen Access, Copyright CERN, for the benefit of the CMS Collaboration.Measurements are presented of the associated production of a W boson and a charm-quark jet (W + c) in pp collisions at a center-of-mass energy of 7 TeV. The analysis is conducted with a data sample corresponding to a total integrated luminosity of 5 fb−1, collected by the CMS detector at the LHC. W boson candidates are identified by their decay into a charged lepton (muon or electron) and a neutrino. The W + c measurements are performed for charm-quark jets in the kinematic region p jet T > 25 GeV, |ηjet| 25 GeV) and σ(pp → W + c + X)× B (W → ℓν) = 84.1 ± 2.0 (stat.) ± 4.9 (syst.) pb ( p ℓ T > 35 GeV), and the cross section ratios σ(pp → W+ + c ¯ + X)/σ(pp → W− + c + X) = 0.954 ± 0.025 (stat.) ± 0.004 (syst.) ( p ℓ T > 25 GeV) and σ(pp → W+ + c ¯ + X)/σ(pp → W− + c + X) = 0.938 ± 0.019 (stat.) ± 0.006 (syst.) ( p ℓ T > 35 GeV). Cross sections and cross section ratios are also measured differentially with respect to the absolute value of the pseudorapidity of the lepton from the W-boson decay. These are the first measurements from the LHC directly sensitive to the strange quark and antiquark content of the proton. Results are compared with theoretical predictions and are consistent with the predictions based on global fits of parton distribution functions
Matinta maddisoni Matos & Ruiz 2023, sp. nov.
No full text<i>Matinta maddisoni</i> sp. nov. <p>Figs 19–22, 36–37, 46, 52, 58–59, 73–74, 80, 88–89</p> <p> <b>Type material.</b> <b>Holotype:</b> ♁ from Cordillera de Cutucú, road from Patuca to Santiago, Morona Santiago, Ecuador, 2.806⁰S 78.246⁰W, 1000 m el., 13.VII.2004, Maddison, Agnarsson, Iturralde & Salazar leg. (WPM#04-040), deposited in QCAZ (temporarily in UBC-SEM). <b>Paratype:</b> 1♀ from Ecuador, Morona Santiago, 6.6 km N of Limón to Méndez, 2.923⁰S 78.408⁰W, 1000 m el., 14.VII.2004, Maddison, Agnarsson, Iturralde & Salazar leg. (WPM#04-041), deposited in QCAZ (temporarily in UBC-SEM).</p> <p> <b>Etymology.</b> Species named in honor of the world-known arachnologist Wayne P. Maddison, who collected the type specimens.</p> <p> <b>Diagnosis.</b> The males of <i>M. maddisoni</i> are similar to those of the species within the <i>vicana</i> species-group, especially those of <i>M. aragog</i> for having mastidia, separate prolateral cheliceral teeth, a bump on the cheliceral fang and a more symmetrical palpal bulb. Males of <i>M. maddisoni</i> can be distinguished from those <i>M. aragog</i> for not having the bifid embolus tip and for having a squared RTA in retrolateral view (triangular in <i>M. aragog</i>) (Figs 36–37, 46, 52). The females of <i>M. maddisoni</i> differ from those of the other species in which females are known (<i>acutidens</i> species-group, <i>M. fasciata</i>, <i>M. silvae</i>, <i>M. opiparis</i>, <i>M. pardo</i> and <i>M. steindachneri</i>) for having C-shaped copulatory openings facing laterally (Figs 58–59).</p> <p> <b>Description. Male</b> (Figs 19–20). Total length: 5.40. Carapace reddish, black posteriorly, 3.03 long, 2.31 wide and 1.77 high. Ocular area 1.79 long. Anterior eye row 2.07 and posterior 1.96 wide. Chelicera dark brown, frontally with an oblique keel, a depression, a mastidion, with paracondylic projection and a bump on fang (Figs 73, 80); PMT: 2, RMT: 5, PIMT: 4, RIMT: 0 (Fig. 88). Palp (Figs 36–37, 46, 52) dark brown. Sternum yellow. Legs 3412; I: dark brown; II–III: femur yellow, with dark brown tip; patella and tibia dark brown; metatarsus and tarsus yellow; IV: light brown. Length: Leg I 5.56 (femur: 1.51; patella: 1.06; tibia: 1.60; metatarsus: 0.71; tarsus: 0.68); II 5.04 (1.65; 0.95; 1.25; 0.70; 0.49); III 5.93 (2.02; 0.87; 1.38; 0.95; 0.71); IV 5.64 (1.92; 0.81; 1.33; 0.98; 0.60). Leg spination: femur I–IV d1-1-1, p0-0-2, r0-0-1; patella I–II 0; III–IV p0-1-0, r0-1-0; tibia I v2-2-2, p1-0-0, r0; II v2-2-2, p1-1-1, r0; III v1r-2-1r, p0, r0; IV v2-1r-2; p0, r0; metatarsus I–II v2-2; III v2-2, p2-0-2, r1-0-2; IV v2-2, p2-0-2, r1-1-2. Abdomen dorsally light brown with dark spots along the entire length (Fig. 19); ventrally with wide longitudinal black stripe (Fig. 20). Spinnerets light brown.</p> <p> <b>Female</b> (Figs 21–22). Total length: 6.95. Carapace yellow, 3.42 long, 2.50 wide and 1.92 high. Ocular area 1.77 long, orange. Anterior eye row 2.23 and posterior 2.13 wide. Chelicera light brown (Fig. 74); PMT: 2, RMT: 6, PIMT: 3, RIMT: 4 (Fig. 89). Palp and sternum yellow. Legs 3421, yellow. Leg length: I 5.60 (femur: 1.42; patella: 1.12; tibia: 1.50; metatarsus: 0.88; tarsus: 0.68); II 5.77 (1.85; 1.03; 1.37; 0.85; 0.67); III 6.88 (2.46; 0.99; 1.50; 1.17; 0.76); IV 6.31 (2.21; 0.68; 1.33; 1.38; 0.71). Leg spination: femur I–IV d1-1-1, p0-0-2, r0-0-1; patella I–IV 0; tibia I v2-2-2, p0-0-1, r0; II v1r-2-2, p0-0-1, r0; III v1-0-2, p1-0-1, r1-1-1; IV v1-0-1; p1-0-1, r1-1-1; metatarsus I–II v2-2; III v2-2, p1-0-2, r1-0-2; IV v2-2, p1-0-2, r1-1-2. Abdomen as in male. Epigyne (Figs 58–59): copulatory ducts meeting medially and diverging posteriorly, folding dorsally and entering the posterior spermathecae. Spinnerets light brown.</p> <p> <b>Distribution.</b> Known only from Ecuador.</p>Published as part of <i>Matos, Tainá D. S. & Ruiz, Gustavo R. S., 2023, On the taxonomy of the jumping spider genus Matinta Ruiz & Maddison, 2019, with a taxonomic revision of the vicana species-group (Araneae: Salticidae: Amycini), pp. 126-150 in Zootaxa 5343 (2)</i> on page 135, DOI: 10.11646/zootaxa.5343.2.2, <a href="http://zenodo.org/record/8324346">http://zenodo.org/record/8324346</a>
LIFECYCLE MANAGEMENT, MONITORING AND ASSESSMENT FOR SAFE LARGE-SCALE INFRASTRUCTURES: CHALLENGES AND NEEDS: Challenges and needs
No full textPublisher Copyright: © Authors 2019.Many European infrastructures dating back to ’50 and ’60 of the last century like bridges and viaducts are approaching the end of their design lifetime. In most European countries costs related to maintenance of infrastructures reach a quite high percentage of the construction budget and additional costs in terms of traffic delay are due to downtime related to the inspection and maintenance interventions. In the last 30 years, the rate of deterioration of these infrastructures has increased due to increased traffic loads, climate change related events and man-made hazards. A sustainable approach to infrastructures management over their lifecycle plays a key role in reducing the impact of mobility on safety (over 50 000 fatalities in EU per year) and the impact of greenhouse gases emission related to fossil fuels. The events related to the recent collapse of the Morandi bridge in Italy tragically highlighted the sheer need to improve resilience of aging transport infrastructures, in order to increase the safety for people and goods and to reduce losses of functionality and the related consequences. In this focus Structural Health Monitoring (SHM) is one of the key strategies with a great potential to provide a new approach to performance assessment and maintenance over the life cycle for an efficient, safe, resilient and sustainable management of the infrastructures. In this paper research efforts, needs and challenges in terms of performance monitoring, assessment and standardization are described and discussed.Peer reviewe
Insights into the 3D In Vitro Permeability and In Vivo Antioxidant Protective Effects of Kiwiberry Leaf Extract: A Step Forward to Human Nutraceutical Use
No full textActinidia arguta (Siebold & Zucc.) Planch. ex Miq. (kiwiberry) leaves are a source of phenolic compounds with pro-health biological effects, such as antioxidant and anti-inflammatory activities. Despite the huge number of studies reporting the composition of A. arguta leaves, no in vitro or in vivo studies explore its potential use as nutraceutical ingredient based on these activities. Therefore, this study aims to characterize the safety profile of kiwiberry leaf extracts using in vitro and in vivo approaches through the assessment of intestinal cell viability (Caco-2 and HT29-MTX), 3D intestinal permeation, and, most important, the redox markers, biochemical profile and liver and kidney function effects after the animal assays. Briefly, wistar rats were orally treated for 7 days with kiwiberry leaf extracts (50 and 75 mg/kg bw), water (negative control), or vitamin C (positive control). The cell viability was above 90% at 1000 μg/mL for both cells. Coumaroyl quinic acid and rutin achieved a permeation higher than 25% in the 3D intestinal model. The animal studies confirmed the extracts’ ability to increase superoxide dismutase, glutathione peroxidase, and catalase content in animals’ livers and kidneys while simultaneously decreasing the triglycerides content. This study highlighted the antioxidant capacity of kiwiberry leaf extracts, ensuring their efficacy and safety as a nutraceutical ingredient
Aspectos socioeconômicos e perspectivas da cultura do arroz.
No full textEditado por Altevir de Matos Lopes
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