138 research outputs found
Освіта як суспільна технологія (Education as a social technology)
У статті освіта розглядається як суспільна технологія. Головна увага зосереджена на освіті як необхідній
умові прогресивного розвитку суспільства. Розкрито і проаналізовано соціальну сутність поняття «освіта»
та її вплив на суспільний розвиток. Акцентується увага на сучасних вимогах суспільства до освіти, зумовлених
глобалізаційними та інтеграційними процесами. Аналізується розвиток сучасної освіти в різноманітних напрямах (Education as a social technology is considered in the proposed material. It refers to the social problems and is
associated with the process of socialization. The main focus is on education as a necessary condition for the progressive
development of society. Education, as a social technology, is seen in modern conditions – when almost a single global
information space is formed and the processes of globalization and integration gain momentum.
The author traces the mechanisms of education as a social technology for the opportunity to make this process
adequate and one that meets the needs of the society and the education system. The social nature of the concept
«education» and its impact on social development are revealed and analyzed. Attention is focused on the modern
requirements of society to education due to globalization and integration processes. The development of modern
education in different ways is analyzed. This problem is discussed in academic circles of Ukrainian and foreign
scientists, as education is a priority in the development of human society and deserves special attention in the context
of a scientific approach to solving the problems of today
Destruction of the family of steady states in the planar problem of Darcy convection
The natural convection of incompressible fluid in a porous medium causes for
some boundary conditions a strong non-uniqueness in the form of a continuous
family of steady states. We are interested in the situation when these boundary
conditions are violated. The resulting destruction of the family of steady
states is studied via computer experiments based on a mimetic finite-difference
approach. Convection in a rectangular enclosure is considered under different
perturbations of boundary conditions (heat sources, infiltration). Two scenario
of the family of equilibria are found: the transformation to a limit cycle and
the formation of isolated convective patterns.Comment: 12 pages, 6 figure
On the application of information and communications technologies in distance learning labs
The problem of development and testing of the experimental setup for the automatic control of thermal fluid convection allowing to be performed remotely within distance laboratory works on the level of secondary and high schools has been considered. The novelty of the approach is the development of remote sensing technology for research on laboratory equipment in real time. The actuality of the problem is due to the demand for professionals with expertise in remote sensing data collection and processing, as well as access of students in secondary and high schools to the equipment and achievements of leading scientific schools.Брацун Дмитрий Анатольевич; Зюзгин Алексей Викторович; Колесниченко Любовь Ивановна; Курдина Наталья Анатольевна; Путин Геннадий Федорович: Рассмотрены вопросы создания и апробации экспериментальной установки по автоматическому управлению тепловой конвекцией жидкости, которая позволяет дистанционно выполнять лабораторные работы школьного и вузовского уровня. Новизна подхода заключается в разработке технологии ди-станционного проведения исследования на лабораторном оборудовании в режиме реального времени. Актуальность обуславливается востребованностью у рабо-тодателей специалистов, компетентных в дистанционных методах контроля и сбора данных, а также организацией доступа учащихся средних и студентов высших учебных заведений к оборудованию и наработкам ведущих научных шко
Stochastic Simulation of Process Calculi for Biology
Biological systems typically involve large numbers of components with
complex, highly parallel interactions and intrinsic stochasticity. To model
this complexity, numerous programming languages based on process calculi have
been developed, many of which are expressive enough to generate unbounded
numbers of molecular species and reactions. As a result of this expressiveness,
such calculi cannot rely on standard reaction-based simulation methods, which
require fixed numbers of species and reactions. Rather than implementing custom
stochastic simulation algorithms for each process calculus, we propose to use a
generic abstract machine that can be instantiated to a range of process calculi
and a range of reaction-based simulation algorithms. The abstract machine
functions as a just-in-time compiler, which dynamically updates the set of
possible reactions and chooses the next reaction in an iterative cycle. In this
short paper we give a brief summary of the generic abstract machine, and show
how it can be instantiated with the stochastic simulation algorithm known as
Gillespie's Direct Method. We also discuss the wider implications of such an
abstract machine, and outline how it can be used to simulate multiple calculi
simultaneously within a common framework.Comment: In Proceedings MeCBIC 2010, arXiv:1011.005
A self-organized model for cell-differentiation based on variations of molecular decay rates
Systemic properties of living cells are the result of molecular dynamics
governed by so-called genetic regulatory networks (GRN). These networks capture
all possible features of cells and are responsible for the immense levels of
adaptation characteristic to living systems. At any point in time only small
subsets of these networks are active. Any active subset of the GRN leads to the
expression of particular sets of molecules (expression modes). The subsets of
active networks change over time, leading to the observed complex dynamics of
expression patterns. Understanding of this dynamics becomes increasingly
important in systems biology and medicine. While the importance of
transcription rates and catalytic interactions has been widely recognized in
modeling genetic regulatory systems, the understanding of the role of
degradation of biochemical agents (mRNA, protein) in regulatory dynamics
remains limited. Recent experimental data suggests that there exists a
functional relation between mRNA and protein decay rates and expression modes.
In this paper we propose a model for the dynamics of successions of sequences
of active subnetworks of the GRN. The model is able to reproduce key
characteristics of molecular dynamics, including homeostasis, multi-stability,
periodic dynamics, alternating activity, differentiability, and self-organized
critical dynamics. Moreover the model allows to naturally understand the
mechanism behind the relation between decay rates and expression modes. The
model explains recent experimental observations that decay-rates (or turnovers)
vary between differentiated tissue-classes at a general systemic level and
highlights the role of intracellular decay rate control mechanisms in cell
differentiation.Comment: 16 pages, 5 figure
The emergence of waves in random discrete systems
Essential criteria for the emergence of wave-like manifestations occurring in an entirely discrete system are identified using a simple model for the movement of particles through a network. The dynamics are entirely stochastic and memoryless involving a birth-death-migration process. The requirements are that the network should have at least three nodes, that migration should have a directional bias, and that the particle dynamics have a non-local dependence. Well defined bifurcations mark transitions between amorphous, wave-like and collapsed states with an intermittent regime between the latter two
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