2,029 research outputs found
Perception of Dynamic Social and Non-social Stimuli in Preterm and Full-term Children: Neurocognitive Correlates in Early Childhood
Preterm birth is the leading cause of newborn deaths in almost all countries around the world. Whilst survivors encounter severe motor, cognitive and behavioral impairments during infancy or later in their lives, the studies of the recent years have demonstrated that the social development serving a basis for learning and cognition of the environment in human infants can be severely affected even in normally developing preterm born children (gestational age < 37 weeks). The current article presents a discussion on the behavioral as well as the neuroimaging aspects of the social maturation in preterm and full-term children, depicting complexity of theimpairments and focusing on the involved brain structures. Further, authors perform the design of the longitudinal study of social and non-social perception in early childhood, implemented on the base of the Laboratory for Brain and Neurocognitive Development (Ural Federal University).
Keywords: prematurity, social development, early childhood, neurocognitive correlate
Mathematical modeling of thermal stabilization of vertical wells on high performance computing systems
Temperature stabilization of oil and gas wells is used to ensure stability
and prevent deformation of a subgrade estuary zone. In this work, we consider
the numerical simulation of thermal stabilization using vertical seasonal
freezing columns.
A mathematical model of such problems is described by a time-dependent
temperature equation with phase transitions from water to ice. The resulting
equation is a standard nonlinear parabolic equation.
Numerical implementation is based on the finite element method using the
package Fenics. After standard purely implicit approximation in time and simple
linearization, we obtain a system of linear algebraic equations. Because the
size of freezing columns are substantially less than the size of the modeled
area, we obtain mesh refinement near columns. Due to this, we get a large
system of equations which are solved using high performance computing systems.Comment: 9 pages, 5 figure
Run Up of Surface and Internal Waves
The evolution of breaking waves propagating towards the shore and more
specifically the run-up phase over the swash-zone for surface as well as for
internal waves is considered. The study is based on a) laboratory run up
experiments for surface waves ; b) laboratory stratified flow experiments and
c) on field data describing the internal wave run up. The presentation is
focused on the breaking and energy transfer mechanisms common to surface and
internal waves in the swash-zone. The mathematical model taking into account
turbulent mixing and dispersion effects is discussed
Spectral variations of AeBe Herbig stars in the Mon R1 association
We present the change in the Halpha emission-line profile of the spectra of
some AeBe Herbig stars. In the spectrum of VY Mon, Halpha may have one of three
profile types: P Cyg, P Cyg III or single line in accordance with the
brightness variations of the star. HD259431 now shows a double Halpha profile
with the red component stronger than the blue component, while in the earlier
observations the blue peak was higher than the red peak. Finally, the last
Halpha profile of LkHalpha215 is very similar to that obtained by Finkenzeller
et al.Comment: 4pages, 3figure
Principle anticipatory reflection of riality as a principle of paradigm proftssional manner teacher (for instance pedagogical manadement of pupils group)
The article discusses the principle of anticipatory reflection of reality as a basic rule paradigm of pedagogical management of pupils group. The essence of the validity of this principleВ статье рассматривается принцип опережающего отражения действительности как основное правило парадигмы педагогического управления ученическим коллективом. Описывается сущность действия данного принцип
Traditions and Innovations in the Formation of the Image of a Russian City in the Media: National Media View
This article is devoted to traditions and innovations in the cultural space of Russian cities. The author uses a notion of city portrait to analyze how national media cover cities’ life. A number of city details, a list of information sources and agenda are analyzed to find out if the image of a city could be an instrument of adaptating the innovations and saving local identity.В статье рассматривается проявление традиционных ценностей и адаптация инноваций в культурном пространстве крупных российских региональных городов. Автор, опираясь на понятие «портрета» города, анализирует освещение в федеральных печатных СМИ жизни провинциальных центров. Исследователь выводит предположение о том, что портрет города в СМИ может служить индикатором восприятия инноваций в регионах России и сохранения их собственной идентичности
State of the mineral component of rat bone tissue during hypokinesia and the recovery period
Experiments were conducted on young growing rats. Hypokinesia lasting from 20 to 200 days caused retarded gain in weight and volume of the femur and delayed development of the cortical layer of the diaphysis. In contrast, the density of the cortical layer of the femoral diaphysis increased due to elevation of the mineral saturation of the bone tissue microstructures. Incorporation of Ca into the bone tissue in hypokinesia had a tendency to reduce. Partial normalization of the bone tissue mineral component occurred during a 20 day recovery period following hypokinesia
- …