Some sample path properties of Gaussian processes

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Algebras of quotients of graded Lie algebras

In this paper we explore graded algebras of quotients of Lie algebras with special emphasis on the 3-graded case and answer some natural questions concerning its relation to maximal Jordan systems of quotients.Comment: 15 pages. To appear in the Journal of Algebr

From Liberal to Liberal Global Order: Implications for Western Security

On November 26, 2021, Dr. Antonio Sanchez Ortega, Assistant Professor at the University of Granada in Spain, presented From Liberal to Liberal Global Order: Implications for Western Security at the 2021 CASIS Vancouver West Coast Security Conference. The key points of discussion were the changes that the great powers have made on the understanding of basic rules in the international arena and the Liberal Global Order is seeing its relative decline. The presentation was followed by a question and answer period with questions from the audience and CASIS Vancouver executives

Routing of embryonic arrays using genetic algorithms

This paper presents a genetic algorithm (GA) that solves the problem of routing a multiplexer network into a MUXTREE embryonic array. The procedure to translate the multiplexer network into a form suitable for the GAbased router is explained. The genetic algorithm works on a population of configuration registers (genome) that define the functionality and connectivity of the array. Fitness of each individual is evaluated and those closer to solving the required routing are selected for the next generation. A matrix-based method to evaluate the routing defined by each individual is also explained. The output of the genetic router is a VHDL program describing a look-up table that receives the cell co-ordinates as inputs and returns the value of the corresponding configuration register. The routing of a module-10 counter is presented as an example of the capabilities of the genetic router. The genetic algorithm approach provides not one, but multiple solutions to the routing problem, opening the road to a new level of redundancy where a new "genome" can be downloaded to the array when the conventional reconfiguration strategy runs out of spare cells

Monitoring and Charge-Control of Lead-Acid Batteries in Photovoltaic Applications

This paper presents a microcontroller-based charge controller suitable for photovoltaic applications. The controller performs temperature-compensated charge control. It also monitors and stores those parameters that provide an indication of batteries' state of charge and state of health: Panel's voltage, battery's voltage and current, current demanded by a load and temperature

A Single Question of Parent-Reported Physical Activity Levels Estimates Objectively Measured Physical Fitness and Body Composition in Preschool Children: The PREFIT Project

Physical inactivity is recognized as a determinant of low physical fitness and body composition in preschool children, which in turn, are important markers of health through the lifespan. Objective methods to assess physical activity, physical fitness and body composition in preschool children are preferable; however, they have some practical limitations in the school context. Therefore, the aim of this study was to test whether a single question regarding physical activity level of preschool children, reported by their parents, could be used as an alternative screening tool of physical fitness and body composition. The information was obtained from 10 different cities throughout Spain, gathering a total of 3179 healthy preschool children (52.8% boys and 47.2% girls) aged 3-5 years. Physical activity levels of preschool children were reported by parents using a single question with five response options (very low, low, average, high, or very high). Physical fitness and body composition were assessed with the PREFIT fitness battery. The results showed that parents' perception of their children's physical activity was positively associated with all objectively measured physical fitness components (beta(range) = -0.094 to 0.113; all p < 0.020); and negatively with body composition indicators as measured (beta(range) = -0.113 to -0.058; all p < 0.001). The results showed significant differences in all physical fitness and body composition z-scores across the parent-reported physical activity levels (all p < 0.017 and all p < 0.001, respectively), as well as, for the fitness index (p < 0.001). Our study suggests that in school settings with insufficient resources to objectively assess fitness and body composition, parents-reported physical activity level by means of a single question might provide useful information about these important health markers in preschool children

Editorial

Queremos tomar la imagen algo indefinida que ilustra la portada de nuestra tercera entrega como una metáfora para referimos a ese individuo que se apropia de la ciudad, la habita y la marca con su presencia; al ciudadano que, al fin de cuentas, es otra historia, otra sombra, otra mano que trata de alcanzar la porción de esperanza que le corresponde bajo el sol. En esta ocasión iniciamos la hojeada ojeando la ciudad como espacio de comunicación. En el recorrido nos topamos con el cuerpo del desplazado, asumido desde una perspectiva estética; en la Medellín, que en el umbral de siglo recibe a cientos de desarraigados, conviven también los jóvenes construyen su identidad desde la puesta en escena de complejos modos de acción y relación con su espacio y con sus gentes. En las barriadas el álbum familiar testifica el nacimiento del Rock; gracias a ese efectivo dispositivo de memoria, que al hablar de los amigos retrata a toda una generación, se revive la historia y se disparan los recuerdos. Después de la reflexión sobre los desplazados, se da cuenta, entonces, de esas huellas que fueron configurando las culturas juveniles urbanas contemporáneas