LM Lopes

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  • Lu S Lopes, Vasco T Vasconcelos, L Lopes, V Vasconcelos
  • 1997
We present an abstract machine speciication for TyCO (Typed Concurrent Objects), a name-passing calculus that aims at capturing fundamental concepts present in Concurrent Object-Oriented Languages. TyCO has built-in labeled messages and ephemeral object s that communicate asynchronously. Persistent objects are supported through instantiation of recursive(More)
  • G Agakishiev, C Agodi, H Alvarez-Pol, A Balanda, R Bassini, G Bellia +120 others
  • 2008
The emission of e + e − pairs from C+C collisions at an incident energy of 1 GeV per nucleon has been investigated. The measured production probabilities, spanning from the π 0-Dalitz to the ρ/ω invariant-mass region, display a strong excess above the cocktail of standard hadronic sources. The bombarding-energy dependence of this excess is found to scale(More)
Available data on the associations between motor competence (MC) and flexibility are limited and result inconclusive. This study aims to examine the relationship between flexibility and MC in children. The sample comprised 596 Portuguese children (47.1% girls) aged 9.7 ± 0.6 years. Motor competence was evaluated with the body coordination test,(More)
  • Maria Helena, Abreu Silva, Rosa Maria, Ferreira Pinho, Lísia Graciete, Pereira Martins +9 others
  • 2010
— At the University of Aveiro, a multimedia tool was developed to help the teaching of botany [1], [2]. It includes a Dichotomous Interactive Key (DIK), for 390 taxa of vascular plants occurring at " Ria de Aveiro " lagoon system. This key is linked to two different glossaries, one descriptive, the other illustrated. At the end of the identification(More)
With multidetector computed tomography equipment it is possible to identify early signs of ischemia on non-enhanced CT (NECT) and have access to cerebral hemodynamics using perfusion CT (PCT). Based on specific patterns of hemodynamic changes of cerebral blood flow, cerebral blood volume and mean transit time it is feasible to create probability maps of(More)
  • D Belver, A Blanco, P Cabanelas, J Diaz, P Fonte, J A Garzon +6 others
  • 2009
Year 2007 was crowned with the test of a complete RPC sector equipped with 400 FEE channels [1]; a very important milestone , indeed, in order for HADES to explore extreme heavy ion collisions in the years 2009-2010. Despite the success, specially regarding the overall detector performance , there were nevertheless concerns regarding the minimum threshold,(More)
Aging of glass RPCs has been extensively studied along the last years. Most authors refer effects such as an increase of dark counting rate, reduction of the counter efficiency and the appearance of deposits over the electrodes surfaces. Understanding the origin of these deposits and their effect on the counter performance is of considerable practical(More)
  • P Cabanelas, M Morales, J A Garzon, A Gil, D Gonzalez-Diaz, A Blanco +9 others
  • 2009
We present the performance of Multi-gap timing RPCs under irradiation by fully stripped relativistic ions (γβ =2.7, Z=1-6). A time resolution of 80 ps at high efficiency has been obtained by just using standard 'off the shelf' 4-gap timing RPCs from the new HADES ToF wall. The resolution worsened to 100 ps for ∼ 1 kHz/cm 2 proton flux and for ∼ 100 Hz/cm 2(More)
  • E Antunes, R Ferreira Marques, A Blanco, N Carolino, L Lopes, A Pereira +11 others
  • 2006
Timing Resistive Plate Chambers (RPCs) are planar gaseous detectors made with a combination of metallic and resistive electrodes, delivering time resolutions around 50 ps σ and efficiency up to 99% for MIPs. In this work we describe the development and test of an electrically shielded timing RPC array for crosstalk-free time measurements in high granularity(More)