O impacto da abordagem competitiva na motivação dos alunos no esporte

This study is devoted to the description of the competitive method as an effective way to increase the motivation of today's students in physical education classes in higher education. The purpose of the study is to assess the impact of the competitive method on the level of students' motivation in sports, positive interest for studying the subject. Allocation of types of motivation allowed the author to evaluate and trace the dynamics of changes in the level of motivation to the sport. The level of motivation was determined using the author's methodology, developed on the basis of scientific literature. The basis of the study is the Branch of IUT in the city of Surgut, the department of Natural Science and Humanities, during physical education classes. The researcher has shown that the use of a competitive method in physical education classes can increase motivation, activates the interest of students.Este estudio está dedicado a la descripción del método competitivo como una forma efectiva de aumentar la motivación de los estudiantes de hoy en las clases de educación física en la educación superior. El propósito del estudio es evaluar el impacto del método competitivo en el nivel de motivación de los estudiantes en los deportes, interés positivo para estudiar la materia. La asignación de los tipos de motivación permitió al autor evaluar y rastrear la dinámica de los cambios en el nivel de motivación del deporte. El nivel de motivación se determinó utilizando la metodología del autor, desarrollada sobre la base de la literatura científica. La base del estudio es la Rama de IUT en la ciudad de Surgut, el departamento de Ciencias Naturales y Humanidades, durante las clases de educación física. El investigador ha demostrado que el uso de un método competitivo en las clases de educación física puede aumentar la motivación, activa el interés de los estudiantes.Este estudo é dedicado à descrição do método competitivo como uma forma eficaz de aumentar a motivação dos alunos de hoje em aulas de educação física no ensino superior. O objetivo do estudo é avaliar o impacto do método competitivo sobre o nível de motivação dos alunos em esportes, interesse positivo para estudar o assunto. A alocação de tipos de motivação permitiu ao autor avaliar e traçar a dinâmica de mudanças no nível de motivação para o esporte. O nível de motivação foi determinado usando a metodologia do autor, desenvolvida com base na literatura científica. A base do estudo é a Filial da IUT na cidade de Surgut, departamento de Ciências Naturais e Humanidades, durante as aulas de educação física. O pesquisador mostrou que o uso de um método competitivo nas aulas de educação física pode aumentar a motivação, ativa o interesse dos alunos

Formation of Millisecond Pulsars in Globular Clusters

In this contribution we discuss how neutron stars are produced and retained in globular clusters, outlining the most important dynamical channels and evolutionary events that affect thepopulation of mass-transferring binaries with neutron stars and result in the formation of recycled pulsars. We confirm the importance of electron-capture supernovae in globular clusters as the major supplier of retained neutron stars.By comparing the observed millisecond pulsar population and the results obtained from simulations, we discuss several constraints on the evolution of mass-transferring systems.In particular, we find that in our cluster model the following mass-gaining events create populations of MSPs that do not match the observations (with respect to binary periods and companion masses or the number of produced systems) and therefore likely do not lead to NSs spun up to millisecond periods: (i) accretion during a common envelope event with a NS formed through accretion-induced collapse, and (ii) mass transfer from a WD donor. By restricting ourselves to the evolutionary and dynamical paths that most likely lead to neutron star recycling, we obtain good agreement between our models and the numbers and characteristics of observed millisecond pulsars in the clusters Terzan 5 and 47 Tuc.Comment: 6 pages, 3 figures, to appear in the proceedings of the 40 Years of Pulsars conference held at McGill University in August 200

Why do aqueous surfactant solutions spread over hydrophobic substrates?

Spreading of aqueous surfactant solution droplets over hydrophobic substrates proceeds in one slow stage at concentration of surfactants below some critical value and in two stages if the surfactant concentration is above the critical value: the fast and relatively short first stage is followed by a slower second stage. It is shown that the kinetics of a slow spreading at concentrations below the critical value and the second stage at concentrations above the critical value are determined by a transfer of surfactant molecules on a bare hydrophobic substrate in front of the moving three-phase contact line (autophilic phenomenon). The latter process results in an increase of the solid–vapour interfacial tension of the hydrophobic solid surface in front of the moving three-phase contact line and spreading as a result. It is proven that the adsorption of surfactant molecules in front of the moving three-phase contact line results in a decrease of the total free energy of the droplet. Hence, the adsorption of surfactants molecules on a bare hydrophobic substrate in front of the moving three-phase contact line is a spontaneous process in spite of an increase of the local solid–vapour interfacial tension. The duration of the first stage of spreading in the case of the surfactant concentration above the critical value correlates well with the duration of adsorption of surfactant molecules onto a liquid– vapour interface. The latter allows assuming that the adsorption on the liquid–vapour interface is the driving mechanism of spreading during the first fast stage of spreading at surfactant concentrations above the critical value. It is discussed why the first stage of spreading does not take place in the case of surfactant concentrations below the critical concentration in spite of the longer duration of adsorption on liquid– vapour interface in this case

One Complete and Seven Draft Genome Sequences of Subdivision 1 and 3 Acidobacteria Isolated from Soil.

We report eight genomes from representatives of the phylum Acidobacteria subdivisions 1 and 3, isolated from soils. The genome sizes range from 4.9 to 6.7 Mb. Genomic analysis reveals putative genes for low- and high-affinity respiratory oxygen reductases, high-affinity hydrogenases, and the capacity to use a diverse collection of carbohydrates