Sobre el consumo de hielo y nieve en la Cataluña del siglo XVIII

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Fuzzy Hunter Optimizer: An Bio-Metaheuristic Algorithm Inspired by L\'evy Walks

This article introduces the Fuzzy Hunter Optimizer (FHO), a novel metaheuristic inspired by L\'evy diffuse visibility walk observed in predatory species and even in human behavior during the search for sustenance. To address a constrained optimization problem, we initialize a population of hunters in the search space. The hunter with the best fitness represents the food source. The other hunters move through the search space following a L\'evy walk. When they spot the food source, they move towards it, gradually abandoning the Levy walk. To model the hunters visibility, we employ linear membership functions. In each iteration, the hunter with the best fitness becomes the food source. Unlike other metaheuristics, FHO parameters (visibility functions) do not require pre-calibration, since they adapt with iterations.Comment: 13 pages; 8 figures. arXiv admin note: text overlap with arXiv:2309.0594

Análisis de señales

191 páginas.Se exponen los fundamentos del campo "análisis de señales” organizados y presentados de acuerdo con el plan de estudios de la carrera de ingeniería electrónica, el libro está constituido por seis capítulos, el primero es la Introducción, el segundo se refiere a la Ortogonalidad y series de Fourier, el tercero trata de Transformada de Fourier, el cuarto versa sobre Teoría de muestreo, el quinto de Variables y procesos aleatorios y el sexto es un Curso de Matlab

Genetic Analysis of Tomato Fruit Ripening at Polypeptide Profiles Level through Quantitative and Multivariate Approaches

Multivariate analysis became essential in functional and structural Genomics because of the large quantity of biological data provided by these new research areas. Diallel mating design was widely applied to analyze the heritability of quantitative traits but it was recently used for approaching to the inheritance patterns of other levels of gene expression such as transcript profiles. Investigating the inheritance pattern of total polypeptide profiles with a diallel design remains as a vacancy subject. The objective of the present research was to infer the inheritance of total polypeptides profiles from tomato pericarp tissue at four different ripening stages in a diallel mating design including five recombinant inbred lines (RILs) and their ten second cycle hybrids (SCH). To achieve this objective, a multivariate analysis was applied to identify eventual inheritance patterns through a data mining approach and then univariate analyses were used to verify these patterns. Mainly dominance and also overdominance, though in a minor percentage, contributed to the gene actions involved in their genetic basis. Multivariate analysis was efficient in identifying inheritance patterns of total polypeptide profiles through a data mining approach, and univariate analyses largely verified the identified gene actionsFil: Marchionni Basté, Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Rosario. Facultad de Cs.agrarias. Departamento de Biologia. Cat.de Genetica; ArgentinaFil: Pereira Da Costa, Javier Hernán. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Rosario. Facultad de Cs.agrarias. Departamento de Biologia. Cat.de Genetica; ArgentinaFil: Rodríguez, Gustavo Rubén. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Rosario. Facultad de Cs.agrarias. Departamento de Biologia. Cat.de Genetica; ArgentinaFil: Zorzoli, Roxana. Universidad Nacional de Rosario. Facultad de Cs.agrarias. Departamento de Biologia. Cat.de Genetica; Argentina. Universidad Nacional de Rosario. Consejo de Investigaciones; ArgentinaFil: Pratta, Guillermo Raúl. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Rosario. Facultad de Cs.agrarias. Departamento de Biologia. Cat.de Genetica; Argentin

Comunicación bluetooth para sensores utilizados en aplicaciones de control de tráfico

1 archivo PDF (40 páginas)Exposición del diseño e implementación de la plataforma de desarrollo Bluetooth para sensores inalámbricos orientados a aplicaciones lIS

Arte rupestre y espacios de memoria: las representaciones del sitio Confluencia (Antofagasta de la Sierra, Catamarca, Argentina)

Our work addresses the continuity of rock art production as one of the many mechanisms that allowed the construction of social memory of the Puna communities over a long term process. With this purpose, we analyze the sequence of rock art production of Confl uencia site, Antofagasta de la Sierra, Catamarca, Argentina. This sequence, representing different periods of local and regional archeology (from ca. 5500 BP to the Spanish-Native contact period) was carried out using a deconstructive approach in a way that allowed us to identify the modes in which the depictions were articulated through the time, and ended up shaping the final rock art assemblage. Finally, we could say that the continuity expressed in the successive rock art productions shows the way that different social agents get related with the otherness that the preexistent depictions propose, by including the previous into the new discourse or by excluding it.    Nuestro trabajo aborda la continuidad de la producción rupestre como uno de los tantos mecanismos que permitieron la construcción de memoria social de las comunidades puneñas a lo largo de un proceso de larga duración. Para tal fin, analizamos la secuencia de producción de las manifestaciones rupestres del sitio Confluencia, Antofagasta de la Sierra, Catamarca, Argentina. Dicha secuencia, que representa distintos periodos de la arqueología local y regional (ca. 5500 AP al contacto hispanoindígena), fue llevada a cabo siguiendo una metodología deconstructiva de forma tal que nos permitiera identificar los modos en que se fueron articulando, a través del tiempo, las diversas representaciones que terminaron conformando el conjunto rupestre final. De tal forma, se pudo definir que en la continuidad expresada en las sucesivas producciones rupestres se manifestaba, también, la forma en que los distintos agentes sociales se fueron relacionando con la alteridad que proponían las representaciones preexistentes, ya sea incorporando lo previo al nuevo discurso, o bien, excluyéndolo del mismo.  

The non-reciprocal Dicke model

We investigate the physics of an open two-component Dicke model, where the light field mediates non-reciprocal interactions between two spin species. We show that the model, which we dub non-reciprocal Dicke model, exhibits a discrete parity-time ($\mathcal{PT}$) symmetry and we characterize the emergence of a non-stationary phase, so far explained in terms of dissipation-induced instability, as spontaneous breaking of $\mathcal{PT}$ symmetry. We further show that such $\mathcal{PT}$ symmetry breaking embodies an instance of a non-reciprocal phase transition, a concept recently introduced by Fruchart $et$ $al.$ [Nature ${\bf 592}$, 363 (2021)]. Remarkably, the phase transition in our model does not necessitate the presence of any underlying broken symmetry or exceptional points in the spectrum, both believed to be essential requirements for non-reciprocal phase transitions. Our results establish driven-dissipative light-matter systems as a new avenue for exploring non-reciprocal phase transitions and contribute to the theory of non-reciprocal collective phenomena.Comment: 5+3 pages, 4+2 figure

The Houdayer Algorithm: Overview, Extensions, and Applications

The study of spin systems with disorder and frustration is known to be a computationally hard task. Standard heuristics developed for optimizing and sampling from general Ising Hamiltonians tend to produce correlated solutions due to their locality, resulting in a suboptimal exploration of the search space. To mitigate these effects, cluster Monte-Carlo methods are often employed as they provide ways to perform non-local transformations on the system. In this work, we investigate the Houdayer algorithm, a cluster Monte-Carlo method with small numerical overhead which improves the exploration of configurations by preserving the energy of the system. We propose a generalization capable of reaching exponentially many configurations at the same energy, while offering a high level of adaptability to ensure that no biased choice is made. We discuss its applicability in various contexts, including Markov chain Monte-Carlo sampling and as part of a genetic algorithm. The performance of our generalization in these settings is illustrated by sampling for the Ising model across different graph connectivities and by solving instances of well-known binary optimization problems. We expect our results to be of theoretical and practical relevance in the study of spin glasses but also more broadly in discrete optimization, where a multitude of problems follow the structure of Ising spin systems.Comment: 24 pages, 9 figure