Two-dimensional discrete solitons in dipolar Bose-Einstein condensates

We analyze the formation and dynamics of bright unstaggered solitons in the disk-shaped dipolar Bose-Einstein condensate, which features the interplay of contact (collisional) and long-range dipole-dipole (DD) interactions between atoms. The condensate is assumed to be trapped in a strong optical-lattice potential in the disk's plane, hence it may be approximated by a two-dimensional (2D) discrete model, which includes the on-site nonlinearity and cubic long-range (DD) interactions between sites of the lattice. We consider two such models, that differ by the form of the on-site nonlinearity, represented by the usual cubic term, or more accurate nonpolynomial one, derived from the underlying 3D Gross-Pitaevskii equation. Similar results are obtained for both models. The analysis is focused on effects of the DD interaction on fundamental localized modes in the lattice (2D discrete solitons). The repulsive isotropic DD nonlinearity extends the existence and stability regions of the fundamental solitons. New families of on-site, inter-site and hybrid solitons, built on top of a finite background, are found as a result of the interplay of the isotropic repulsive DD interaction and attractive contact nonlinearity. By themselves, these solutions are unstable, but they evolve into robust breathers which exist on an oscillating background. In the presence of the repulsive contact interactions, fundamental localized modes exist if the DD interaction (attractive isotropic or anisotropic) is strong enough. They are stable in narrow regions close to the anticontinuum limit, while unstable solitons evolve into breathers. In the latter case, the presence of the background is immaterial

Features of changes in the parameters of heart pumping function and excretion of catecholamines in primary school children when giving the oral answers at theoretical lessons

© 2016, International Journal of Pharmacy and Technology. All rights reserved.It was revealed for the first time that changes in the indices of cardiac pump function of the first graders during oral responses either at a desk or at the blackboard do not depend on the level of physical activity. During the subsequent years of study, the reaction of the heart pumping function of children subjected to enhanced motor activity decreases significantly when giving oral responses at the theoretical lessons. It was found that, from age to age, all children examined have a significant reduction in their stroke volume response when answering at a desk or standing at the blackboard. The reaction of the parameters of heart pumping function of first and fourth graders is slightly higher in boys than in girls. It was found for the first time that the reaction of the parameters of cardiac pumping function in the examined children is lower when answering at the blackboard. It was also revealed that the excretion of adrenaline and noradrenaline during oral responses in the first class does not depend on the level of physical activity. It was found for the first time that the children of control group have greater epinephrine excretion when giving oral answers both at the desk and at the blackboard, while the children with enhanced motor activity have greater excretion of norepinephrine

Vector solitons in nearly-one-dimensional Bose-Einstein condensates

We derive a system of nonpolynomial Schroedinger equations (NPSEs) for one-dimensional wave functions of two components in a binary self-attractive Bose-Einstein condensate loaded in a cigar-shaped trap. The system is obtained by means of the variational approximation, starting from the coupled 3D Gross-Pitaevskii equations and assuming, as usual, the factorization of 3D wave functions. The system can be obtained in a tractable form under a natural condition of symmetry between the two species. A family of vector (two-component) soliton solutions is constructed. Collisions between orthogonal solitons (ones belonging to the different components) are investigated by means of simulations. The collisions are essentially inelastic. They result in strong excitation of intrinsic vibrations in the solitons, and create a small orthogonal component ("shadow") in each colliding soliton. The collision may initiate collapse, which depends on the mass and velocities of the solitons.Comment: 7 pages, 6 figures; Physical Review A, in pres

Spatiotemporal discrete multicolor solitons

We have found various families of two-dimensional spatiotemporal solitons in quadratically nonlinear waveguide arrays. The families of unstaggered odd, even and twisted stationary solutions are thoroughly characterized and their stability against perturbations is investigated. We show that the twisted and even solutions display instability, while most of the odd solitons show remarkable stability upon evolution.Comment: 18 pages,7 figures. To appear in Physical Review

Increase of efficiency of development of personal potential of students of the university in the process of sports training

The article considers pedagogical conditions of increase of efficiency of development of personal potential of students of the University in the process of sports trainingВ статье рассматриваются педагогические условия повышения эффективности развития личностного потенциала студентов университета в процессе физкультурно-спортивной подготовк

Pedagogical conditions of increase of efficiency of development of personal potential of students of the university in the process of sports training

The article considers pedagogical conditions of increase of efficiency of development of personal potential of students of the University in the process of sports trainingРассматриваются педагогические условия повышения эффективности развития личностного потенциала студентов университета в процессе физкультурно-спортивной подготовк

Investigar los métodos de gestión en educación con tomar el caso de un profesor en la etapa universitaria

The paper reveals the problem of the professional formation of a future teacher, training a teacher with a high intellectual level of self-awareness, being capable of conceptual thinking, creativity and being ready to independently managing one’s own professional activity, which will allow interacting more effectively with the learning environment, being an active subject of professional and pedagogical activity.El documento revela el problema de la formación profesional de un futuro maestro, capacitar a un maestro con un alto nivel intelectual de autoconciencia, ser capaz de pensamiento conceptual, creatividad y estar listo para gestionar de forma independiente la propia actividad profesional, lo que permitirá interactuar más efectivamente con el ambiente de aprendizaje, siendo un sujeto activo de actividad profesional y pedagógica

Investigating the Methods of Management in Education with Taking the Case of a Teacher at the Stage of University

The paper reveals the problem of the professional formation of a future teacher, training a teacher with a high intellectual level of self-awareness, being capable of conceptual thinking, creativity and being ready to independently managing one’s own professional activity, which will allow interacting more effectively with the learning environment, being an active subject of professional and pedagogical activity

TEACHING AND UPBRINGING OF STUDENTS IN HIGHER EDUCATIONAL INSTITUTIONS, TAKING INTO ACCOUNT THE REQUIREMENTS OF A LEARNER-CENTRED APPROACH

O artigo apresentado é dedicado à questão da organização do ensino de educação para alunos aprendentes em instituições de ensino superior. Baseado nos trabalhos de I.A. Zimnyaya, T.I. Ilyin, V.V. Kraevsky, G.M. Kodzhaspirova, I. Ya. Lerner, I.F. Kharlamov e outros pesquisadores, os autores esclareceram o conceito de "ensino de educação para estudantes universitários", analisaram seus componentes, sistematizaram a experiência nacional e estrangeira na organização do ensino de educação para estudantes em instituições de ensino superior. O artigo também apresenta o complexo de condições pedagógicas do autor que promove a organização do ensino de educação para estudantes universitários. O complexo inclui os seguintes componentes: correção das orientações de valor dos alunos no processo educacional de uma universidade; o desenvolvimento da atividade cognitiva dos estudantes e a construção do processo educacional em uma universidade, levando em consideração os requisitos de uma abordagem centrada no aluno.El documento presentado está dedicado al tema de la organización de la enseñanza de la educación para los estudiantes que aprenden en instituciones de educación superior. Basado en los trabajos de I.A. Zimnyaya, T.I. Ilyin, V.V. Kraevsky, G.M. Kodzhaspirova, yo. Ya. Lerner, I.F. Kharlamov y otros investigadores, los autores aclararon el concepto de "enseñanza de educación para estudiantes universitarios", analizaron sus componentes, sistematizaron la experiencia nacional y extranjera en la organización de la enseñanza de educación para estudiantes en instituciones de educación superior. El documento también presenta el complejo de condiciones pedagógicas del autor que promueve la organización de la enseñanza de educación para estudiantes universitarios. El complejo incluye los siguientes componentes: corrección de las orientaciones de valor de los estudiantes en el proceso educativo de una universidad; El desarrollo de la actividad cognitiva de los estudiantes y la construcción del proceso educativo en una universidad teniendo en cuenta los requisitos de un enfoque centrado en el alumno.The presented paper is devoted to the issue of organization of upbringing teaching for students which are learners in higher educational institutions. Based on the works of I.A. Zimnyaya, T.I. Ilyin, V.V. Kraevsky, G.M. Kodzhaspirova, I. Ya. Lerner, I.F. Kharlamov and other researchers, the authors clarified the concept of "upbringing teaching for university students", analysed its components, systematised domestic and foreign experience in organizing upbringing teaching for students in higher educational institutions. The paper also presents the author’s complex of pedagogical conditions that promotes the organization of upbringing teaching for university students. The complex includes the following components: correction of students' value orientations in the educational process of a university; the development of cognitive activity of students and the construction of the educational process at a university taking into account the requirements of a learner-centred approach.   &nbsp