165 research outputs found

    Adaptive applications to assist students with autism in succeeding in higher education

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    In this demo we discuss a few possible scenarios showing adaptation of presentation and information to assist autistic students in succeeding in higher education. These students not only have specific information need, they are also more concerned about their privacy. We use WiBAF (Within Browser Adaptation Framework) for user modeling and adaptation to give users control over the sharing of their data

    On the question of the residual of strong exponents of oscillation on the set of solutions of third-order differential equations

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    In this paper, we study various types of exponents of oscillation (upper or lower, strong or weak) of non-strict signs, zeros, and roots of non-zero solutions of linear homogeneous differential equations of the third order with continuous and bounded coefficients on the positive semi-axis. A nonzero solution of a linear homogeneous equation cannot be zeroed due to the existence and uniqueness theorem. Therefore, the spectra of all the listed exponents of oscillation (i.e. their sets of values on nonzero solutions) consist of one zero value. In addition, it is known that the spectra of the oscillation exponents of linear homogeneous equations of the second order also consist of a single value. Consequently, on the set of solutions of equations up to the second order there is a residual of all exponents of oscillation. On the set of solutions of third-order equations, strong exponents vibrations of hyper roots are not residual, i.e. are not invariant with respect to the change in the solution at any finite section of the half-axis of time. In this article, it is proved that on the set of solutions of third-order equations, strong oscillation indices of non-strict signs, zeros, and roots are not residual. In parallel, the existence of a function from the specified set with the following properties is proved: all listed exponents of oscillation are accurate, but not absolute. At the same time, all strong exponents like all weak ones, are equal to each other

    Adaptive applications to assist students with autism in succeeding in higher education

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    Abstract. In this demo we discuss a few possible scenarios showing adaptation of presentation and information to assist autistic students in succeeding in higher education. These students not only have specific information need, they are also more concerned about their privacy. We use WiBAF (Within Browser Adaptation Framework) for user modeling and adaptation to give users control over the sharing of their data

    Automating the E-learning Personalization

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    Социальные программы в структуре расходов консолидированного бюджета субъекта федерации

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    The purpose of the study is to examine the role of social programs in the structure of expenditures of the consolidated budgets of the Russian Federation and the Volgograd region, to identify the main directions for improving the content of targeted programs aimed at implementing specific measures in the field of social policy.Materials and methods: the methodology includes structural and statistical analysis, methods of economic forecasting and modeling. The analysis uses official statistical data, as well as re-ports on the performance of the consolidated budgets of the Russian Federation and the Volgograd region in the period 2014-2018. The paper contains an analysis of both scientific periodicals and non-periodical publications devoted to the topic of this study.Results: the paper discusses the features of spending budget funds for the implementation of social programs at both the federal and regional levels, reflects the model of the impact of the volume of budget financing of the social sphere on the state of the regional economy. In the course of the work, recommendations were developed to improve the mechanism for allocating financial resources, including elements of public-private partnership, as well as to stimulate the development of socially-oriented non-profit organizations that can become effective intermediaries between government agencies and the population in the implementation of social policy measures. The study revealed an upward trend in the volume of budget funds allocated for the implementation of activities within the framework of social environment development programs. At the same time, it was noted that this growth is partially offset by the dynamics of inflation, which indicates the need to optimize expenditure items taking into account data on changes in the consumer price index and the level of real incomes of citizens.Conclusion: centralizing the management of socio-economic development processes seems to be the most rational course of action in an unstable economic system. Improving the quality of life of the population of the regions occurs in the conditions of transformation of economic systems, during which the regional economy joins allRussian course. In the course of the work, the need to improve the effectiveness of the implemented social policy was justified, which becomes especially necessary in the conditions of increasing rates of population outflow from the Volgograd region. The developed social sphere of the region makes it possible to form effective civil society institutions, in which the population independently participates in the process of improving the social environment. To ensure control over timely and complete budget execution, state audit methods can be used (we are talking about regional and municipal control and accounting bodies), including strategic audit, which allows proactive control of the effectiveness of upcoming events. The results of this study can be used to track the dynamics of budget spending in the implementation of socially-oriented programs, as well as to determine the most promising areas of budget financing of the social environment.Цель исследования – рассмотреть роль социальных программ в структуре расходов консолидированных бюджетов РФ и Волгоградской области, выявить основные направления совершенствования содержания целевых программ, направленных на реализацию конкретных мероприятий в области социальной политики.Материалы и методы: методология включает в себя структурный и статистический анализ, методы экономического прогнозирования и моделирования. Для анализа используются официальные статистические данные, а также материалы отчетов об исполнении консолидированных бюджетов Российской Федерации и Волгоградской области в период 2014–2018 гг. В работе содержится анализ как периодических, так и монографических изданий, посвященных теме настоящего исследования.Результаты: в статье рассмотрены особенности расходования бюджетных средств на реализацию социальных программ как на федеральном, так и на региональном уровне, отражена модель воздействия объемов бюджетного финансирования социальной сферы на состояние региональной экономики. В ходе работы выработаны рекомендации по совершенствованию механизма распределения финансовых ресурсов, включающие в себя элементы государственно-частного партнерства, а также стимулирование развития социально-ориентированных некоммерческих организаций, способных стать эффективными посредниками между государственными органами и населением в области реализации мероприятий социальной политики. В результате исследования была выявлена восходящая динамика объемов бюджетных средств, выделяемых на реализацию мероприятий в рамках программ развития социальной среды. При этом было отмечено, что указанный рост частично нивелируется динамикой инфляции, что свидетельствует о необходимости оптимизации расходных статей с учетом данных об изменении индекса потребительских цен и уровня реальных доходов граждан.Заключение: централизация управления процессами социально-экономического развития представляется наиболее рациональным сценарием действий в условиях нестабильной экономической системы. Совершенствование качества жизни населения регионов происходит в условиях трансформации экономических систем, в ходе которой региональная экономика вливается в общероссийский курс. В ходе работы была обоснована необходимость повышения эффективности реализуемой социальной политики, которая становится особенно необходимой в условиях повышения темпов оттока населения из Волгоградской области. Развитая социальная сфера региона позволяет формировать эффективные институты гражданского общества, в рамках которых население самостоятельно принимает участие в процессе совершенствования общественной среды. Для обеспечения контроля своевременного и полного исполнения бюджета могут применяться методы государственного аудита (речь идет о региональных и муниципальных контрольно-счетных органах), в том числе – стратегического аудита, позволяющего осуществлять проактивный контроль эффективности предстоящих мероприятий. Результаты данного исследования могут быть применены для отслеживания динамики расходования бюджетных средств при реализации социально-ориентированных программ, а также в целях определения наиболее перспективных направлений бюджетного финансирования социальной среды

    Structure of Pb(Fe2/3W1/3)O3 Single Crystals with Partial Cation Order

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    Despite intensive studies on the complex perovskite Pb(Fe2/3W1/3)O3 (PFWO) relaxor, understanding the exact nature of its multifunctional properties has remained a challenge for decades. In this work we report a comprehensive structural study of the PFWO single crystals using a combination of synchrotron X-ray diffraction and high-resolution electron microscopy. The set of {h + ½, k + ½, l + ½} superlattice reflections was observed for the first time based on single-crystal synchrotron X-ray experiments (100–450 K) and transmission electron microscopy investigations, which indicates some kind of B-cation ordering in PFWO which had been thought to be totally disordered. It was found that (1) the crystal structure of PFWO should be described by a partly ordered cubic perovskite (i.e. Fm − 3m), (2) the weak ferromagnetic properties and excess magnetic moment of PFWO can be understood based on non-random distribution of Fe cations between the 4a and 4b sites, and (3) the Pb displacement disorder is present in this material and the cations are probably displaced along the <100> directions. The X-ray diffraction results of this investigation show that partial cation ordering indeed exists in PFWO, which makes it necessary to revisit the generally accepted interpretations of the results obtained up to date. In agreement with X-ray diffraction study the main results of TEM study include: (1) a long range order that can be described with the Fm − 3m symmetry is reliably detected, (2) the coherence length of that long range order is in the order of 1–2 nm and (3) no remarkable chemical inhomogeneity is found in the tested PFWO crystal, excluding the possibility of a compositional ordering arising from substitutional defects in the perovskite structure

    The δ-phase of SrTeO3 at 780 K1

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    As part of a structural investigation of strontium tellurate(IV) (STO), SrTeO3, with particular emphasis on the crystal chemistry and phase transitions, the structure of the δ-phase has been determined at 780 K using a single-crystal analysis. Both structural and non-linear optical measurements indicate that STO undergoes a γ→δ second-order ferroelectric phase transition at 633 K from the C2 (γ) to the C2/m (δ) modification. Systematic differences between the similar γ- and δ-phase structures were determined and it was found that this phase transformation can be described by a displacive mechanism
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