224 research outputs found

    Conceptual basis for developing of trainig models in complex system software assembling generator

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    This paper presents conceptual basis for developing of training models of interactive assembling system for automatic building of application software systems, obtained during practical works over "Design and architecture of software systems" and "Object-oriented analysis and design" courses. The system is intended for practical demonstration of basic stages and operations in development of complex and critical software. This also includes a consideration of solutions for some substantial problems of complex systems software generation, such as: program module compatibility, formalization of computer interaction and choosing of formal model for human machine interface. In addition, several training model implementations are provided.Keywords: software generator, training models, interactive system

    STUDYING QUANTUM HASHING CRYPTOGRAPHIC STRENGTH

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    Abstract.This research solves the problem of studying quantum hashing cryptographic strength. The mostimportant criteria, that should be taken into consideration during cryptographic strength studying, is quantum hashing strength against collisions, and irreversibility of quantum hash-functions. Strength against collisions for selected quantum hash-function depends on many numeric parameters, and it is necessary to find a corresponding optimization solution. It is necessary to conduct comparative analysis of known methods in this research to achieve the goal and offer new methods to deliver the result. In the course of research different algorithms were used and modified to ensure cryptographic strength of quantum hash-functions, and an algorithm on the basis of linear codes is developed to find adecision in case of high dimensionalities.Keywords: Quantum computing, quantum cryptography, quantum hashing

    An Assessment of the Economic Performance of the EU Baltic Region States

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    The paper explores how the common economic space, a product of the EU, influenced the economies of the Baltic Sea Region states in 1995-2015. The authors investigate changes in the economic performance of the developed (Germany, Denmark, Finland, and Sweden) and Eastern European countries (Poland, Latvia, Lithuania, Estonia) during the integration of the latter states into the EU. Performance dynamics is analyzed for eight EU Baltic Sea Region countries. Three Russian Baltic regions constitute a control group. The authors conduct a production-function-based comparative analysis of development dynamics in individual countries to identify distinctive features for each group. Despite a rapid growth of Eastern European economies, the difference between the region’s eastern and western countries remains substantial. Economic convergence between eastern and western EU countries in terms of investment does not lead to convergence in labour efficiency. The capital-labour ratio and the growth rate of labour efficiency in the Russian Baltic are close to the Eastern European average

    Genetic algorithm of network graph multi-objective optimization as an instrument of project monitoring

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    © 2015 Canadian Center of Science and Education. All rights reserved. Proper tracking of progress remains a vital part of modern project management, defining prospects of successful implementation of planned tasks. There are several popular concepts of project monitoring, such as logical framework approach (LFA), earned value management (EVM), etc., and each of them depends on properly optimized network graph that represents dependences between project tasks. Article describes the features and problems of multi-objective optimization in project management with reference to network graphs. The significant role of network graph optimization for project monitoring systems is proved and the model of multi-objective optimization of the network graph on criterion functions of duration and project cost based on NSGA-II genetic algorithm is proposed as the main purpose of research. Model takes into account the reserves of time on a critical way of the network graph, possibility of decreasing the load of available resources at the expense of time reserves on non-critical ways of the network graph, variety of used resources and options of delegation. One of its main advantages is quite low laboriousness of implementation, that depends on number of nodes on the network graph of the project and on number of possible options of delegation for the project tasks with several alternatives of delegation. Model has been tested on sample project with real data and results have been analyzed

    Control of Symetry by Lyapunov Exponents

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    In this paper we describe control systems with local and global symmetry. Recent results in control theory have demonstrated that control can lead to symmetry breaking in chaotic systems with a simple type of symmetry. In our work we analyze controllability of Lyapunov exponents using continuous control functions. We show that, by controlling Lyapunov exponents, a chaotic attractor lying in some invariant subspace can be made unstable with respect to perturbations transverse to the invariant subspace. Furthermore, a symmetry-increasing bifurcation can occur, after which the attractor possesses the system symmetry. We demonstrate control of local Lyapunov exponents for the control of symmetry in nonlinear dynamical systems. We also study the effect of noise in the system. It is shown that the small-amplitude noise can restore the symmetry in the attractor after the bifurcation and that the average time for trajectories to switch between the symmetry-broken components of the attractor scales algebraically with the noise amplitude. We demonstrate the relation between Lyapunov exponents, order parameters (Haken, 1983, 1988) and symmetry using a simple physical system and discuss the applicability of our approach to the study of state transitions in the epileptic brain.Дослідження останніх років у галузі систем керування показують, що зовнішні збурення можуть призводити до порушення симетрії в системах з хаотичною динамікою з певним типом симетрії. В роботі проаналізовано можливість керування показниками Ліяпунова за допомогою неперервного зовнішнього впливу. Показано, що хаотичний атрактор може стати нестабільним по відношенню до трансверсальних до інваріантного підпростору збурень. При цьому можуть виникати біфуркації, після яких утворюється нова симетрія атрактора. Ми також: показуємо існування співвідношення між: показниками Ляпунова, параметрами порядку (Хакен, 1983, 1988) та симетрією на прикладі простої фізичної системи. Обговорюється можливість використання нашого підходу до вивчення перехідних режимів в епілептичному головному мозку

    Официальные сайты поселений как источники информации о социально-экономическом развитии территории: карельская практика

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    Существующие пробелы в официальной статистики создают трудности для отечественных учёных в исследованиях социально-экономических процессов на уровне городских и сельских поселений. В статье предпринята попытка показать возможности сбора информации с альтернативного источника – официального сайта муниципального образования. На основании требований статьи 13 Федерального закона от 9 февраля 2009 г. № 8-ФЗ «Об обеспечении доступа к информации о деятельности государственных органов и органов местного самоуправления» определены информационные блоки, раскрывающие данные о социально-экономическом развитии муниципалитета. Проведён сбор данных по выбранным блокам в 105 из 109 муниципальных образований Республики Карелия. Установлено, что сбор данных по сайтам муниципальных образований целесообразно осуществлять только по 3 информационным блокам: отчёт главы по итогам года о проделанной работе, годовой отчёт об исполнении бюджета и сведения о доходах муниципальных служащих. Сделан вывод о том, что текущий уровень информационного наполнения муниципальных сайтов в Республике Карелия демонстрирует сильную асимметрию и позволяет их использовать сугубо как вспомогательный источник данных. The existing gaps in official statistics create difficulties for domestic scientists in the study of socioeconomic processes at the level of urban and rural settlements. The article attempts to show the possibilities of collecting information from an alternative source – the official website of the municipality. Based on the requirements of Article 13 of the Federal Law of February 9, 2009 No. 8-FZ «On Ensuring access to information on the activities of state bodies and local self-government bodies», information blocks that disclose data on the socio-economic development of the municipality are defined. Data was collected on selected blocks in 105 out of 109 municipalities of the Republic of Karelia. The conclusion is made that it is advisable to collect data on the websites of municipalities only for 3 information blocks. They are as follows: the report of the head on the results of the year on the work done, the annual report on budget execution and information on the income of municipal employees. It is concluded that the current level of information content of municipal websites in the Republic of Karelia demonstrates a strong asymmetry and allows them to be used purely as an auxiliary data source

    Use of continuous solid-phase synthesis to obtain phosphors based on strontium aluminate

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    The effect of conditions of continuous solid-phase synthesis on particle size distribution of nanostructured powders of strontium aluminate was studied. It was shown that continuous solid-phase synthesis allows for: synthesis of strontium aluminate in the form of nanostructured powders with controlled particle size distribution directly during its synthesis; in the presence of a liquid phase strontium aluminate is synthesized with a high level of monophasity. It was shown that in order to optimize the illuminating parameters of phosphors based on strontium aluminate, it is advisable to use continuous solid-phase synthesis

    Descriptive study of the flora of the "Relic Oaks" landscape reserve (Eastern Siberia) in the context of the protected area importance for maintaining biodiversity

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    The article shows the importance of specially protected areas for preserving the gene pool of rare and useful plants in Siberia on the example of the "Relic oaks" state landscape reserve. The landscape reserve is located on the territory of Eastern Siberia (Russia), on the two large floristic areas of Holarctic: Circumboreal and East-Asian. During the study, 696 species of higher vascular plants have been identified in the territory of the landscape reserve. The prevailing families are following: Asteraceae, Poaceae, Ranunculaceae, Rosaceae, Cyperaceae, Fabaceae, Caryophyllaceae, Brassicaceae, Apiaceae, and Scrophulariaceae. In the territory of landscape reserve, 4 floral complexes were identified: alpine, forest, steppe and meadow-alluvial, as well as 10 chorological groups. The feature of the flora was prevalence of forest and steppe plant species with the East Asian type of habitat. By the number of species, herbaceous plants in the landscape reserve dominate over arboreal plants, and shrubs have the largest share among arboreal plants. The spectrum of life forms of plants shows the climatic conditions of the territory at the border of large floral areas and zones of vegetation. On the studied territory, there are 171 species of higher vascular plants (24.5% of the total flora composition in the landscape reserve), are rare and protected in various regions of Siberia
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