719 research outputs found
Temporal logic model of performance in high school = Темпорально-логическая модель деятельности обучаемого в вузе
Pavlenko V. N., Tkachenko Y. M. Temporal logic model of performance in high school = Темпорально-логическая модель деятельности обучаемого в вузе. Journal of Education, Health and Sport. 2015;5(7):258-270. ISSN 2391-8306. DOI 10.5281/zenodo.19970http://ojs.ukw.edu.pl/index.php/johs/article/view/2015%3B5%287%29%3A258-270https://pbn.nauka.gov.pl/works/584328http://dx.doi.org/10.5281/zenodo.19970Formerly Journal of Health Sciences. ISSN 1429-9623 / 2300-665X. Archives 2011 – 2014 http://journal.rsw.edu.pl/index.php/JHS/issue/archive Deklaracja.Specyfika i zawartość merytoryczna czasopisma nie ulega zmianie.Zgodnie z informacją MNiSW z dnia 2 czerwca 2014 r., że w roku 2014 nie będzie przeprowadzana ocena czasopism naukowych; czasopismo o zmienionym tytule otrzymuje tyle samo punktów co na wykazie czasopism naukowych z dnia 31 grudnia 2014 r.The journal has had 5 points in Ministry of Science and Higher Education of Poland parametric evaluation. Part B item 1089. (31.12.2014).© The Author (s) 2015;This article is published with open access at Licensee Open Journal Systems of Kazimierz Wielki University in Bydgoszcz, Poland and Radom University in Radom, PolandOpen Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited.This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non commercialuse, distribution and reproduction in any medium, provided the work is properly cited.The authors declare that there is no conflict of interests regarding the publication of this paper.Received: 15.06.2015. Revised 05.07.2015. Accepted: 12.07.2015. TEMPORAL LOGIC MODEL OF PERFORMANCE IN HIGH SCHOOLТЕМПОРАЛЬНО-ЛОГИЧЕСКАЯ МОДЕЛЬ ДЕЯТЕЛЬНОСТИ ОБУЧАЕМОГО В ВУЗЕ V. N. Pavlenko, Y. M. TkachenkoВ. Н. Павленко, Ю. М. Ткаченко National Aerospace University «Kharkiv Aviation Institute», UkraineНациональный аэрокосмический университет им. Н. Е. Жуковского «ХАИ», Украина V.N. Pavlenko,NationalAerospaceUniversity«Kharkiv Aviation Institute», Ukraine Chkalova str. 17,Kharkiv,Ukraine, 61070E-mail: [email protected] Y.M. Tkachenko,NationalAerospaceUniversity«Kharkiv Aviation Institute», Ukraine Chkalova str. 17,Kharkiv,Ukraine, 61070E-mail: [email protected] Abstract: The one of the stages of the approach to the organization of computer decision support to determine the trajectory of training of students in universities, namely the synthesis of model student. For the synthesis of the student model used mathematical apparatus of temporal logic. The form of a software implementation, the student model is representation in the form of an intelligent agent. Further stages of developing a new approach based on the development of the model of the student group as a community of intelligent agents, and on the notion of the learning process of students in the form of multi-agent system. A multi-agent system will be used to support decision-making by different levels (deans, vice-rector for scientific and pedagogical work) in the event of disputes in the learning process of individual students and student groups. Keywords: student, student group, the trajectory of education, educational process, process model, multi-agent systems, intelligent agents, temporal logic. Аннотация: изложен один из этапов реализации подхода к организации компьютерной поддержки принятия решений по определению траектории обучения студентов в ВУЗах, а именно синтез модели обучаемого. Для синтеза модели обучаемого использован математический аппарат темпоральной логики. Формой программной реализации модели обучаемого является его представление в виде интеллектуального агента. Дальнейшие этапы разрабатываемого подхода основаны на разработке модели студенческой группы как сообщества интеллектуальных агентов, и на представлении процесса обучения студентов в форме мультиагентной системы. Мультиагентная система будет использоваться для поддержки принятия решений руководителями разных уровней (деканами, проректорами по научно-педагогической работе) при возникновении спорных ситуаций в процессе обучения как отдельных студентов, так и студенческих групп. Ключевые слова: студент, студенческая группа, траектория обучения, образовательный процесс, процессная модель, мультиагентные системы, интеллектуальные агенты, темпоральная логика
Increase in Thermal Stability of Hydride of the Titanium
The paper presents the results of studies of the modification of the surface of a fraction of titanium hydride with borosiloxanes in order to increase its thermal stability at high temperatures and protect titanium from oxidation for possible use as a heat-resistant neutron-protective material in nuclear power engineering. A theoretical model has been developed for modifying a fraction of titanium hydride with borosilicate bysol-gel technology from aqueous solutions of sodium organosilicinate and boric acid. The technology for modifying titanium hydride consists in the preliminary chemical activation of the surface of the fraction by a silicone oligomer - sodium organosilicinate (OSN) followed by treatment with boric acid, separation of the solid phase of titanium hydride and subsequent drying at 100 ∘C. During the synthesis of sodium borosilicateand its thermal treatment in the temperature range 100-500 ∘C, complex structuralphase rearrangements were observed. At 100 ∘C, an amorphous-crystalline silicate of CH3 (Si30.4B1.6O64) Na monoclinic syngony with large crystal lattice parameters was formed. The thermal treatment of the borosilicate coating at 300 ∘C led to achange in the radiographic characteristics of the crystalline phase and the formation of a monoclinic NaBSi2O5(OH)2 structure with continuous layers of silicon-oxygen tetrahedra. Further crystallization of borosilicate at a temperature of 500 ∘C leads to the formation of a silicate of the skeleton type NaBSi3O8 of triclinic syngony. Above 500 ∘C, sodium borosilicate passes into a glassy state.
 
Radiation and Protective Polymeric Dielectric Aggregates with Effect of the Active Protection
In case of electrical breakdown of dielectrics electromagnetic interferences can destabilize operation of the electronic equipment and instruments of aerospace complexes. In the conditions of space flight the initiated electrobit phenomena as a result of high-energy ionizing radiation, solar flashouts and radiation belts ofEarth, finally, lead to corrupting of dielectric materials, especially polymeric materials and aggregates. In operation the possibility of receiving constructional dielectric polymeric aggregates capable to remove the accumulated excess electrical charge, for protection of jackets of the electronic equipment of space aircraft is shown. Materials are received in the way joint dispersion of a polymeric matrix and reactivehydrophobic metallooligomer in the form of nanodispersible powders in a polymer melt with the subsequent solid-phase compaction under pressure. As the active fillers of polymeric aggregates high-dispersible radiation-hardened metallooligomer on the basis of bismuth polietilsilikonat, capable to be sewed chemically with polymeric matrixes as a result of radiation solid-phase polymerization are used.
Keywords: polymer matrix, bismuth polyethylsilicone, dielectric composites, active protection, mechanoactivation, solid-phase compaction
Analysis of first overtone bands of isotopologues of CO and SiO in stellar spectra
The first overtone ( = 2) bands of the monosubstituted
isotopologues of CO at 2.3 m in the spectrum of Arcturus (K2 III), and of
the monosubstituted isotopologues of SiO at 4 m in the spectrum of the red
giant HD196610 (M6 III) are modelled.
To investigate problems involving the computation of the first overtone bands
of isotopologues of CO and SiO in spectra of late-type stars and to determine
isotopic abundances.
We use fits of theoretical synthetic spectra to the observed stellar
molecular bands of CO and SiO to determine abundances of isotopes of C, O and
Si.
Fits of synthetic spectra of the \CO first overtone bands at 2.3 m
computed with three available line lists (Goorvitch, HITEMP2010 and Li et al.)
to the observed spectrum of Arcturus provide the same carbon abundance
[C]= and isotopic ratio of carbon C/C=10 2. However,
the quality of fits to the observed spectrum differ for three line lists used.
Furthermore, the derived oxygen isotopic ratio O/O = 2000
500 is larger than that known in the solar system where O/O =
500. The silicon isotopic ratio in the atmosphere of the red giant HD196610 is
revised. Using the ExoMol SiO line list with appropriate statistical weights
for the SiO isotopologues the `non-solar' ratio Si:Si:Si =
0.860.03:0.120.02:0.020.01 is obtained.
We found that a) the computed isotopic carbon and silicon ratios determined
by the fits to the observed spectrum depend on the adopted abundance of C and
Si, respectively; b) Correct treatment of the nuclear spin degeneracies
parameter is of crucial importance for the use of nowadays HITRAN/ExoMol line
lists in the astrophysical computations.Comment: 9 pages, 6 figures, accepted by A&
VLT X-shooter spectroscopy of the nearest brown dwarf binary
The aim of the project is to characterise both components of the nearest
brown dwarf sytem to the Sun, WISE J104915.57-531906.1 (=Luhman16AB) at optical
and near-infrared wavelengths. We obtained high signal-to-noise
intermediate-resolution (R~6000-11000) optical (600-1000 nm) and near-infrared
(1000-2480nm) spectra of each component of Luhman16AB, the closest brown dwarf
binary to the Sun, with the X-Shooter instrument on the Very Large Telescope.
We classify the primary and secondary of the Luhman16 system as L6-L7.5 and
T0+/-1, respectively, in agreement with previous measurements published in the
literature. We present measurements of the lithium pseudo-equivalent widths,
which appears of similar strength on both components (8.2+/-1.0 Angstroms and
8.4+/-1.5 Angstroms for the L and T components, respectively). The presence of
lithium (Lithium 7) in both components imply masses below 0.06 Msun while
comparison with models suggests lower limits of 0.04 Msun. The detection of
lithium in the T component is the first of its kind. Similarly, we assess the
strength of other alkali lines (e.g. pseudo-equivalent widths of 6-7 Angstroms
for RbI and 4-7 Angstroms for CsI) present in the optical and near-infrared
regions and compare with estimates for L and T dwarfs. We also derive effective
temperatures and luminosities of each component of the binary: -4.66+/-0.08 dex
and 1305(+180)(-135) for the L dwarf and -4.68+/-0.13 dex and 1320(+185)(-135)
for the T dwarf, respectively. Using our radial velocity determinations, the
binary does not appear to belong to any of the well-known moving group. Our
preliminary theoretical analysis of the optical and J-band spectra indicates
that the L- and T-type spectra can be reproduced with a single temperature and
gravity but different relative chemical abundances which impact strongly the
spectral energy distribution of L/T transition objects.Comment: 12 pages, 9 figure, 3 tables, accepted to A&
Electronic charge and orbital reconstruction at cuprate-titanate interfaces
In complex transition metal oxide heterostructures of physically dissimilar
perovskite compounds, interface phenomena can lead to novel physical properties
not observed in either of their constituents. This remarkable feature opens new
prospects for technological applications in oxide electronic devices based on
nm-thin oxide films. Here we report on a significant electronic charge and
orbital reconstruction at interfaces between YBa2Cu3O6 and SrTiO3 studied using
local spin density approximation (LSDA) with intra-atomic Coulomb repulsion
(LSDA+U). We show that the interface polarity results in the metallicity of
cuprate-titanate superlattices with the hole carriers concentrated
predominantly in the CuO2 and BaO layers and in the first interface TiO2 and
SrO planes. We also find that the interface structural relaxation causes a
strong change of orbital occupation of Cu 3d orbitals in the CuO2 layers. The
concomitant change of Cu valency from +2 to +3 is related to the partial
occupation of the Cu orbitals at the interface with SrO planes
terminating SrTiO3. Interface-induced predoping and orbital reconstruction in
CuO2 layers are key mechanisms which control the superconducting properties of
field-effect devices developed on the basis of cuprate-titanate
heterostructures.Comment: 11 pages, 8 figures, to appear in the "Proceedings of Third Joint
HLRB and KONWIHR Result and Reviewing Workshop", Springer 200
Modeling the spectrum of V4334 Sgr (Sakurai's Object)
Theoretical spectral energy distributions were computed for a grid of
hydrogen-deficient and carbon-rich model atmospheres of T(eff) in the range of
5000-6250 K and log g = 1.0 - 0.0 by the technique of opacity sampling, taking
into account continuous, molecular band and atomic line absorption. These
energy distributions were compared with the spectrum of V4334 Sgr (Sakurai's
object) of April, 1997 in the wavelength interval 300-1000 nm. We show that (1)
the shape of the theoretical spectra depends strongly on T(eff) but only very
weakly on the hydrogen abundance; (2) the comparison of the observed and
computed spectra permits to estimate T(eff) approximately 5500 K for V4334 Sgr
in April, 1997, and its interstellar reddening (plus a possible circumstellar
contribution) E(B-V) approximately 0.70.Comment: 7 pages, 8 figures, LaTeX, accepted by Astronomy and Astrophysic
- …