54 research outputs found

    Current Approaches to Organizing the Educational Process in Primary School: a Neuroscientific Approach

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    The education system in the New Ukrainian School does not meet expectations, and therefore requires reforms and changes, involvement of modern approaches to organization of the educational process. This article analyzes various innovative neuropedagogical, neuropsychological and neurolinguistic techniques, proposed by scientists and educators-innovators and substantiates the importance of their implementation in the primary school learning process. The relevance of the topic is attributable to the need to solve pedagogical problems, using knowledge about individual characteristics of brain activity, higher mental functions and thinking strategies of primary school children. This study allows to make the educational process more effective and to ensure full self-realization of each child, as well as cognitive and personal development of primary school students. The article presents current provisions of research work of primary school teachers and psychologists from the standpoint of related to pedagogy neurosciences, as well as introduction of modern neuropedagogical, neuropsychological and neurolinguistic approaches to the practice of educational process in the New Ukrainian school.</p

    Generalized spacetimes defined by cubic forms and the minimal unitary realizations of their quasiconformal groups

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    We study the symmetries of generalized spacetimes and corresponding phase spaces defined by Jordan algebras of degree three. The generic Jordan family of formally real Jordan algebras of degree three describe extensions of the Minkowskian spacetimes by an extra "dilatonic" coordinate, whose rotation, Lorentz and conformal groups are SO(d-1), SO(d-1,1) XSO(1,1) and SO(d,2)XSO(2,1), respectively. The generalized spacetimes described by simple Jordan algebras of degree three correspond to extensions of Minkowskian spacetimes in the critical dimensions (d=3,4,6,10) by a dilatonic and extra (2,4,8,16) commuting spinorial coordinates, respectively. The Freudenthal triple systems defined over these Jordan algebras describe conformally covariant phase spaces. Following hep-th/0008063, we give a unified geometric realization of the quasiconformal groups that act on their conformal phase spaces extended by an extra "cocycle" coordinate. For the generic Jordan family the quasiconformal groups are SO(d+2,4), whose minimal unitary realizations are given. The minimal unitary representations of the quasiconformal groups F_4(4), E_6(2), E_7(-5) and E_8(-24) of the simple Jordan family were given in our earlier work hep-th/0409272.Comment: A typo in equation (37) corrected and missing titles of some references added. Version to be published in JHEP. 38 pages, latex fil

    Progress and trends in pediatric hematopoietic cell transplantation in Central-East European countries

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    Hematopoietic cell transplantation (HCT) is widely used as a treatment for acquired and congenital disorders. In recent years, a significant increase in transplant activity around the world has been observed, especially in Eastern European countries. This article aimed to assess progress and trends in pediatric HCT in Central-Eastern European countries between 2013 and 2018. Transplant activity survey in 2013 and 2018 in nine Central-Eastern European countries (Czech Republic, Croatia, Hungary, Lithuania, Poland, Romania, Slovakia, Slovenia, and Ukraine) was performed. The highest transplant rates in total were found in the Czech Republic and Hungary. When calculated per 10 million of the pediatric population, a 25.9% increase in the number of allo-HCT was observed with the highest in Croatia, Romania, Lithuania, and Poland; and a 12.2% increase in the number of auto-HCT was observed with the highest in Slovenia, Slovakia, Romania, Poland, Ukraine, and Croatia. We have shown, over the years 2013 and 2018, in some countries of Central-Eastern Europe that there was a significant increase in transplant activity, especially in those with the lower rates. This increase was observed mainly in centers already existing in 2013, especially in the allo-HCT setting. The rise of activity was significantly less influenced by the creation of new transplant centers or the increase in the number of pediatric transplant beds. In conclusion, our analysis indicates that in the Czech Republic, Hungary, Lithuania, and Slovenia, the actual infrastructure and the number of HCTs cover the needs, whereas in other countries, especially in Romania and Ukraine, the number of HCT needs to be increased

    Spectra of PP-Wave Limits of M-/Superstring Theory on AdS_p x S^q Spaces

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    In this paper we show how one can obtain very simply the spectra of the PP-wave limits of M-theory over AdS_7(4) x S^4(7) spaces and IIB superstring theory over AdS_5 x S^5 from the oscillator construction of the Kaluza-Klein spectra of these theories over the corresponding spaces. The PP-wave symmetry superalgebras are obtained by taking the number P of ``colors'' of oscillators to be large (infinite). In this large P limit, the symmetry superalgebra osp(8*|4) of AdS_7 x S^4 and the symmetry superalgebra osp(8|4,R) of AdS_4 x S^7 lead to isomorphic PP-wave algebras, which is the semi-direct sum of su(4|2) with H^(18,16), while the symmetry superalgebra su(2,2|4) of AdS_5 x S^5 leads to the semi-direct sum of [psu(2|2) + psu(2|2) + u(1)] with H^(16,16) as its PP-wave algebra [H^(m,n) denoting a super-Heisenberg algebra with m bosonic and n fermionic generators]. The zero mode spectra of M-theory or IIB superstring theory in the PP-wave limit corresponds simply to the unitary positive energy representations of these algebras whose lowest weight vector is the Fock vacuum of all the oscillators. General positive energy supermultiplets including those corresponding to higher modes can similarly be constructed by the oscillator method.Comment: Typos corrected; references added; minor modifications to improve presentation; 37 pages, LaTeX fil

    Spectrum Generating Conformal and Quasiconformal U-Duality Groups, Supergravity and Spherical Vectors

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    After reviewing the algebraic structures that underlie the geometries of N=2 Maxwell-Einstein supergravity theories (MESGT) in five and four dimensions with symmetric scalar manifolds, we give a unified realization of their three dimensional U-duality groups as spectrum generating quasiconformal groups. They are F_{4(4)}, E_{6(2)}, E_{7(-5)}, E_{8(-24)} and SO(n+2,4). Our formulation is covariant with respect to U-duality symmetry groups of corresponding five dimensional supergravity theories, which are SL(3,R), SL(3,C), SU*(6), E_{6(6)} and SO(n-1,1)X SO(1,1), respectively. We determine the spherical vectors of quasiconformal realizations of all these groups twisted by a unitary character. We also give their quadratic Casimir operators and determine their values. Our work lays the algebraic groundwork for constructing the unitary representations of these groups induced by their geometric quasiconformal actions, which include the quaternionic discrete series. For rank 2 cases, SU(2,1) and G_{2(2)}, corresponding to simple N=2 supergravity in four and five dimensions, this program was carried out in arXiv:0707.1669. We also discuss the corresponding algebraic structures underlying symmetries of matter coupled N=4 and N>4 supergravity theories. They lead to quasiconformal realizations of split real forms of U-duality groups as a straightforward extension of the quaternionic real forms.Comment: Section 4 is split with the addition of a subsection on quadratic Casimir operators; references added; typos corrected. Latex file; 53 page

    Модель системи управління ефективністю та прогнозування використання електричної енергії

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    Мета роботи - моделювання системи управління та прогнозування використання теплової і електричної енергії та апробація отриманих результатів на прикладі закладів освіти. Предмет дослідження – система внутрішніх (техніко-економічних, структурних режимних) та зовнішніх (метеорологічних, екологічних, паливноенергетичних, макроекономічних) факторів, що обумовлюють обсяги і режими споживання енергії та відносини між суб’єктами управління з приводу ефективного використання електричної енергії

    Організаційно-економічні механізми стимулювання розвитку відновлювальної енергетики України

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    Об’єкт дослідження ‒ організаційно-економічні механізми стимулювання розвитку відновлювальної енергетики України. Предмет дослідження – економічні відносини, що виникають із приводу генерації, транспортування, розподілу та споживання електроенергії з відновлювальних енергетичних ресурсів. Мета роботи ‒ формування теоретико-методичних засад стимулювання розвитку відновлювальної енергетики. Методи дослідження – методика Levelized Cost of Electricity, системно-структурний, інвестиційний, факторний, статистичний, економіко-математичний аналіз і моделювання
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