Tsallis' deformation parameter q quantifies the classical-quantum transition

We investigate the classical limit of a type of semiclassical evolution, the pertinent system representing the interaction between matter and a given field. On using as a quantifier of the ensuing dynamics Tsallis q-entropy, we encounter that it not only appropriately describes the quantum-classical transition, but that the associated deformation-parameter q itself characterizes the different regimes involved in the process, detecting the most salient fine details of the changeover.Comment: 19 pages, 7 figure

Genetic Algorithm for Epidemic Mitigation by Removing Relationships

Min-SEIS-Cluster is an optimization problem which aims at minimizing the infection spreading in networks. In this problem, nodes can be susceptible to an infection, exposed to an infection, or infectious. One of the main features of this problem is the fact that nodes have different dynamics when interacting with other nodes from the same community. Thus, the problem is characterized by distinct probabilities of infecting nodes from both the same and from different communities. This paper presents a new genetic algorithm that solves the Min-SEIS-Cluster problem. This genetic algorithm surpassed the current heuristic of this problem significantly, reducing the number of infected nodes during the simulation of the epidemics. The results therefore suggest that our new genetic algorithm is the state-of-the-art heuristic to solve this problem.Comment: GECCO '17 - Proceedings of the Genetic and Evolutionary Computation Conferenc

Characterization of laser propagation through turbulent media by quantifiers based on the wavelet transform: dynamic study

We analyze, within the wavelet theory framework, the wandering over a screen of the centroid of a laser beam after it has propagated through a time-changing laboratory-generated turbulence. Following a previous work (Fractals 12 (2004) 223) two quantifiers are used, the Hurst parameter, $H$, and the Normalized Total Wavelet Entropy, $\text{NTWS}$. The temporal evolution of both quantifiers, obtained from the laser spot data stream is studied and compared. This allows us to extract information of the stochastic process associated to the turbulence dynamics.Comment: 11 pages, 3 figures, accepted to be published in Physica

Non-binary Language Forms in Spanish: Consciously Using it Facilitates Processing during Comprehension?

Several grammatical studies have focused on the study of morphological innovations used as non-binary forms in Spanish (-x; -e). However, there are no experimental studies that analyze their psycholinguistic processing or the multiple and complex relationships between production and comprehension in non- binary language. To analyze this phenomenon, we performed a sentence reading and comprehension task. We recorded reading times, response times, and accuracy. We considered morphology, stereotypicality and frequency of use of non-binary forms in the participants as predictors. The results show specialization of the non-binary forms as generic morphological variants, as opposed to the generic masculine. The non- binary forms consistently elicited a reference to mixed groups and response times showed that these morphological variants do not carry a higher processing cost than the generic masculine. Moreover, it is possible to see that the conscious use of non-binary forms influences the comprehension processes of the different variants of gender morphology: as the voluntary use of non-binary forms increases, the generic masculine seems to concentrate its reference to groups of men exclusively. Thus, in addition to showing general evidence regarding the processing costs and comprehension of gender morphology in Spanish, our data allow us to observe a potential reciprocal link between production and comprehension processes that deserves further study

Modelling and verifying contract-oriented systems in Maude

We address the problem of modelling and verifying contractoriented systems, wherein distributed agents may advertise and stipulate contracts, but — differently from most other approaches to distributed agents — are not assumed to always behave “honestly”. We describe an executable specification in Maude of the semantics of CO2, a calculus for contract-oriented systems [6]. The honesty property [5] characterises those agents which always respect their contracts, in all possible execution contexts. Since there is an infinite number of such contexts, honesty cannot be directly verified by model-checking the state space of an agent (indeed, honesty is an undecidable property in general [5]). The main contribution of this paper is a sound verification technique for honesty. To do that, we safely over-approximate the honesty property by abstracting from the actual contexts a process may be engaged with. Then, we develop a model-checking technique for this abstraction, we describe an implementation in Maude, and we discuss some experiments with it

Efectos electrofisiológicos del ácido acetilsalicícico en la injuria por isquemia/preperfusión

La reperfusión, luego de un período de isquemia miocárdica breve, puede desencadenar un daño paradojal, dentro del cual, se destacan las arritmias ventriculares. Existen estudios que reportan un efecto beneficioso del ácido acetilsalicílico (AAS) a nivel cardiovascular, pero se desconocen los efectos electrofisiológicos en el proceso de injuria por isquemia/reperfusión. El objetivo de este estudio es evaluar las propiedades electrofisiológicas del AAS, en especial si puede evitar las arritmias de reperfusión (AR) en forma independiente de su efecto antiplaquetario. Se trabajó con corazones aislados de rata Sprague Dawley según la técnica de Langendorff sometidos a 10 minutos de isquemia regional. Se realizaron 3 series esperimentales: 1) control (C, n=10); 2), corazones perfundidos durante todo el protocolo con AAS 0.14 mM (AAS, n=10) y 3) corazones que recibieron la misma dosis de AAS sólo en los 3 primeros minutos de la reperfusión (AASR, n=9). Se analizaron la incidencia y severidad de las AR y su relación con el ECG y los potenciales de acción registrados simultáneamente. El 82% del grupo control presentó AR sostenidas, el 30 % con AAS y el 22% con AASR (ambas p<0.05 por χ2). En la reperfusión se observó que luego de los primeros tres minutos la duración del potencial de acción (DPA) fue mayor en el grupo AASR (81,5 ± 23,1) que en el grupo AAS (55,2 ± 10,0) p<0.05 por ANOVA I. Por lo tanto, la menor incidencia de AR en los grupos tratados podría asociarse al efecto de la aspirina sobre la DPA y que la droga estudiada tendría efectos sobre esta variable sólo al momento de reperfusión.Ventricular fibrillation may occur within seconds after restoration of blood flow to myocardium turned ischemic by a period of coronary occlusion (reperfusion). The mechanisms of the beneficial cardiovascular effects of acetylsalicylic acid (ASA, aspirin) therapy are not completely understood. In this study, we tested the hypothesis that ASA treatment could reduce reperfusion arrhythmias acting during ischemia and/or during early reperfusion by an antiplatelet independent mechanism. We evaluate the effects of ASA 0.14mM perfused from the beginning of the experiment (ASA) or only for 3 min after 10 min of regional ischemia in isolated rat hearts (ASAR). ECG and membrane potential were synchronously recorded. ASA did not change any electrophysiological properties until reperfusion. Both treatments reduce reperfusion ventricular tachycardia and/or fibrillation to 30% and 22,2 % in ASA and ASAR respectively, versus 81,8 % in control group. Action potential duration was prolonged after ASA was ceased when compared with continuous ASA perfusion, suggesting a modification only at reperfusion. The conclusions from this study were that acute aspirin treatment, infused at an early reperfusion period has similar beneficial actions than a continuous infusion of this compound and that this treatment only modify electrophysiological variables at reperfusion.Fil: Lucero, Gabriela. Universidad Nacional de Cuyo. Facultad de Ciencias Médicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Medicina y Biología Experimental de Cuyo; ArgentinaFil: Diez, Emiliano Raúl. Universidad Nacional de Cuyo. Facultad de Ciencias Médicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Medicina y Biología Experimental de Cuyo; ArgentinaFil: Ponce Zunino, A.. Universidad Nacional de Cuyo. Facultad de Ciencias Médicas; Argentin