2,158 research outputs found
Static properties of a warm dense uniform electron gas
No full textCopyright 2021 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in J. Ara, Ll. Coloma, and I. M. Tkachenko , "Static properties of a warm dense uniform electron gas", Physics of Plasmas 28, 112704 (2021) https://doi.org/10.1063/5.0062259[EN] We show how the static dielectric function and other static characteristics of dense warm charged Fermi liquids can be obtained exclusively from the system static structure factor. The non-perturbative self-consistent method of moments is employed to extend onto quantum fluids, a similar reduction stemming from the fluctuation-dissipation theorem and other exact relations for classical one-component plasmas. The results are compared to and complement the numerical data obtained recently by the path-integral Monte Carlo method. Alternative theoretical approaches are discussed and employed as well.I.M.T. is grateful to M. Bonitz and T. Dornheim for several valuable discussions. The authors appreciate that M. Bonitz and T. Dornheim provided accurate path integral Monte Carlo simulation results. I.M.T. also acknowledges fruitful discussions with Yu. V. Arkhipov and L. Conde and the financial support provided by the Committee of Science of the Ministry of Education and Science of the Republic of Kazakhstan (Project No. AP09260349).Ara-Bernad, J.; Coloma, L.; Tkachenko Gorski, IM. (2021). Static properties of a warm dense uniform electron gas. Physics of Plasmas. 28(11):1-17. https://doi.org/10.1063/5.0062259S117281
Energy indicators of operation the heat pumping system heating of the energy efficient house
No full textEnergy indicators of operation the heat pumping system heating of the energy efficient house / B. I. Basok, O. M. Nedbailo, I. K. Bozhko, M. V. Tkachenko // Актуальні проблеми енергетики та екології : зб. наук. пр. за матеріалами XVIII Всеукр. наук.-техн. онлайн-конф., Одеса, 29-30 верес. 2020 р. / Одес. нац. акад. харч. технологій ; ред. О. С. Тітлов. – Одеса : Бондаренко М. О., 2020. – P. 4–5. – Ref.: 2 tit
The role of individual self-study students work in course VI medical university in the professional preparation of doctors.
No full textGrubnik V. V., Koshel Y. M., Tkachenko O. I. The role of individual self-study students work in course VI medical university in the professional preparation of doctors. Journal of Education, Health and Sport. 2017;7(1):503-510. eISSN 2391-8306. DOI http://dx.doi.org/10.5281/zenodo.376848
http://ojs.ukw.edu.pl/index.php/johs/article/view/4327
The journal has had 7 points in Ministry of Science and Higher Education parametric evaluation. Part B item 754 (09.12.2016).
754 Journal of Education, Health and Sport eISSN 2391-8306 7
© The Author (s) 2017;
This article is published with open access at Licensee Open Journal Systems of Kazimierz Wielki University in Bydgoszcz, Poland
Open 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/4.0/) 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/4.0/) which permits unrestricted, non commercial use, 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: 02.01.2017. Revised 16.01.2017. Accepted: 24.01.2017.
UDK 338 (063)
THE ROLE OF INDIVIDUAL SELF-STUDY STUDENTS WORK IN COURSE VI MEDICAL UNIVERSITY IN THE PROFESSIONAL PREPARATION OF DOCTORS
V. V. Grubnik, Y. M. Koshel, O. I. Tkachenko
Odessa National Medical University, Odessa
Summary
Implementing algorithms of the organization and evaluation of individual self-study students work of VI course aims to acquire well educational material that was not included in the theme. According to the work program on surgical diseases it was allocated 119 (46%) hours of self-study work from 259 total hours for students of 6 course. To prepare for practical training was given 71 hours (60%) of that time, and 48 hours (40%) should be used so that the student study himself the curriculum issues that have not been put to practical training topics. Individual self-study students work allows to learn educational material that was not included in the themes of practical training, to learn practical skills (curation of patients, primary surgical treatment, assistance during operation, the registration of medical documentation), to learn modern methods of professional information from the internet, what is a contemporary form of knowledge acquisition during self-study.
Key words: individual self-study students work, educational program, practical training
Observation of Tkachenko Oscillations in Rapidly Rotating Bose-Einstein Condensates
No full textPhys.Rev.Lett.91:100402,2003 We directly image Tkachenko waves in a vortex lattice in a dilute-gas
Bose-Einstein condensate. The low (sub-Hz) resonant frequencies are a
consequence of the small but nonvanishing elastic shear modulus of the
vortex-filled superfluid. The frequencies are measured for rotation rates as
high as 98% of the centrifugal limit for the harmonically confined gas.
Agreement with a hydrodynamic theory worsens with increasing rotation rate,
perhaps due to the increasing fraction of the volume displaced by the vortex
cores. We also observe two low-lying m=0 longitudinal modes at about 20 times
higher frequency
Optical properties of kelbg-pseudopotential-modelled plasmas
No full textSimulation data on hydrogen-like plasmas, modelled with the Kelbg pseudopotential, are treated within the
classical theory of moments. The possibility is analyzed for the model inverse dielectric function to satisfy
five convergent sum rules and other exact relations. The sum rules are the power frequency moments of the
loss function and the latter are calculated using the hypernetted chain approximation with the Kelbg interaction
potential. An approach to the reconstruction of the Nevanlinna parameter function is proposed and successfully
tested against the simulation data. Conclusions on the applicability of the Kelbg potential are drawn and a
model is put forward to define the Coulomb dielectric function with the space dispersion taken into account.This work was partially supported by the Spanish Ministerio de Ciencia e Innovacion under Grant No. ENE2010-21116-C02-02 and by the Sciences Committee of the Ministry of Education and Sciences of the Republic of Kazakhstan under Grants No. 1128/GF, 1129/GF and 1099/GF. The authors acknowledge the financial support of KazNU and are thankful to I. V. Morozov for providing the numerical data; I. M. T. is grateful to the UPV for the granted sabbatical leave and to the KazNU for its hospitality.Arkhipov, YV.; Ashikbayeva, AB.; Askaruly, A.; Davletov, AE.; Tkachenko Gorski, IM. (2013). Optical properties of kelbg-pseudopotential-modelled plasmas. Contributions to Plasma Physics. 53(4-5):375-384. https://doi.org/10.1002/ctpp.201200113S375384534-5Ballester, D., & Tkachenko, I. M. (2005). Two-moment modelling of the dynamic longitudinal conductivity of strongly coupled Coulomb systems. Contributions to Plasma Physics, 45(3-4), 293-299. doi:10.1002/ctpp.200510033Tkachenko, I. M., & Ballester, D. (2005). Reconstruction of internal longitudinal conductivity of non-ideal plasmas by exact relations and sum rules. Journal of Physics: Conference Series, 11, 82-88. doi:10.1088/1742-6596/11/1/008Arkhipov, Y. V., Askaruly, A., Ballester, D., Davletov, A. E., Meirkanova, G. M., & Tkachenko, I. M. (2007). Collective and static properties of model two-component plasmas. Physical Review E, 76(2). doi:10.1103/physreve.76.026403Arkhipov, Y. V., Askaruly, A., Davletov, A. E., & Tkachenko, I. M. (2010). Dynamic Properties of One-Component Moderately Coupled Plasmas: The Mixed Löwner-Nevanlinna-Pick Approach. Contributions to Plasma Physics, 50(1), 69-76. doi:10.1002/ctpp.201010015Arkhipov, Y. V., Askaruly, A., Baimbetov, F. B., Ballester, D., Davletov, A. E., Meirkanova, G. M., & Tkachenko, I. M. (2010). Optical Properties of Model Moderately Coupled Plasmas. Contributions to Plasma Physics, 50(2), 165-176. doi:10.1002/ctpp.201010031Arkhipov, Y. V., Askaruly, A., Ballester, D., Davletov, A. E., Tkachenko, I. M., & Zwicknagel, G. (2010). Dynamic properties of one-component strongly coupled plasmas: The sum-rule approach. Physical Review E, 81(2). doi:10.1103/physreve.81.026402Filippov, A. V., Starostin, A. N., Tkachenko, I. M., & Fortov, V. E. (2011). Dust acoustic waves in complex plasmas at elevated pressure. Physics Letters A, 376(1), 31-38. doi:10.1016/j.physleta.2011.10.030M. G. Krein A. A. Nudel'man “The Markov moment problem and extremal problems”, Trans. of Math. Monographs, 50, Amer. Math. Soc., Providence, R. I.,1977.N. I. Akhiezer “The Classical Moment Problem”, Hafner Publishing Company, N. Y., 1965.Adamyan, V., Alcober, J., & Tkachenko, I. (2003). Applied Mathematics Research eXpress, 2003(2), 33. doi:10.1155/s1687120003212028J. Alcober I. M. Tkachenko M. Urrea In: “Integral Methods in Science and Engineering”, Ed. C. Constanda, Eugenia Pérez, Ch. 2 , 11-20, 2009, Birkhäuser Verlag, Basel, Switzerland.Reinholz, H., Morozov, I., Röpke, G., & Millat, T. (2004). Internal versus external conductivity of a dense plasma: Many-particle theory and simulations. Physical Review E, 69(6). doi:10.1103/physreve.69.066412Morozov, I., Reinholz, H., Röpke, G., Wierling, A., & Zwicknagel, G. (2005). Molecular dynamics simulations of optical conductivity of dense plasmas. Physical Review E, 71(6). doi:10.1103/physreve.71.066408S. Ichimaru “Statistical Plasma Physics”, Addison-Wesley, New York, 1991, Vol. 1; S. Ichimaru, “Statistical Plasma Physics: Condensed Plasmas” Addison-Wesley, New York, 1994, Vol. 2.I. M. Tkachenko Yu. V. Arkhipov A. Askaruly “The Method of Moments and its Applications in Plasma Physics”, LAMBERT Academic Publishing, Saarbrucken, Germany, 2012.Maksimov, E. G., Dolgov, O. V., & Dolgov, O. V. (2007). Physics-Uspekhi, 50(9), 933. doi:10.1070/pu2007v050n09abeh006213D. Pines P. Nozièrs “The Theory of Quantum Liquids”, Benjamin, NY, 1966.M. J. Corbatón I. M. Tkachenko International Conference on Strongly Coupled Coulomb Systems, Camerino, Italy, 2008, Book of Abstracts, p. 90.Kugler, A. A. (1975). Theory of the local field correction in an electron gas. Journal of Statistical Physics, 12(1), 35-87. doi:10.1007/bf01024183Baus, M., Hansen, J.-P., & Sjögren, L. (1981). Electrical conductivity of a strongly coupled hydrogen plasma. Physics Letters A, 82(4), 180-182. doi:10.1016/0375-9601(81)90115-8Reinholz, H. (2005). Dielectric and optical properties of dense plasmas. Annales de Physique, 30(4-5), 1-187. doi:10.1051/anphys:2006004D. N. Zubarev V. Morozov G. Röpke “Relaxation and HydrodynamicProcesses”, Vol. 2 of Statistical Mechanics of Nonequilibrium Processes, Akademie Verlag/Wiley, Berlin, 1997.Röpke, G. (1998). Dielectric function and electrical dc conductivity of nonideal plasmas. Physical Review E, 57(4), 4673-4683. doi:10.1103/physreve.57.4673Reinholz, H., Redmer, R., Röpke, G., & Wierling, A. (2000). Long-wavelength limit of the dynamical local-field factor and dynamical conductivity of a two-component plasma. Physical Review E, 62(4), 5648-5666. doi:10.1103/physreve.62.564
NIST PQC: Code-based CryptoSystems*
No full textThe paper presents results of the experimental study of the k-dimensionality of the LILI-128 cipher Boolean function, which demonstrated the potential for the execution of a statistical attack based on near-proximity of the Boolean functions with algebraically degenerate functions
NIST PQC: Code-based CryptoSystems*
No full textThe code-based schemes, which were submitted to the contest of post-quantum crypto algorithms NIST PQC, are studied in this work. The general characteristics of the algorithms are explored and basic properties and parameters are estimated. A comparative analysis of the electronic digital signature schemes, public-key cryptosystems and key encapsulation schemes are carried out according to the criteria of speed and length of the main cryptographic parameters
Static and collective properties of dusty non-equilibrium plasmas
No full textThe static dielectric function and dust acoustic waves are considered of non-equilibrium dusty plasmas. The
dynamic characteristics are considered using an effective potential applicable at elevated pressure, but this is
not a limitation. A three-species model capable of describing the collective processes is suggested, and a first
order phase transition in such systems is previewed. The OCP static characteristics are calculated within the
HNC approach.This work was partially supported by the Russian Foundation for Basic Research (project No. 12-02-01177-a), the President of the Russian Federation (project no. NSh-2447.2012.2 for Support of Leading Scientific Schools) and the Spanish Ministerio de Ciencia e Innovacion (Grant No. ENE2010-21116-C02-02). I. M. T. is also grateful to the UPV for the sabbatical leave he was granted.Filippov, AV.; Starostin, AN.; Tkachenko Gorski, IM.; Fortov, VE. (2013). Static and collective properties of dusty non-equilibrium plasmas. Contributions to Plasma Physics. 53(4-5):442-449. https://doi.org/10.1002/ctpp.201200128S442449534-5Filippov, A. V., Starostin, A. N., Tkachenko, I. M., Fortov, V. E., Ballester, D., & Conde, L. (2010). Dust acoustic waves in a nonequilibrium dusty plasma. JETP Letters, 91(11), 558-565. doi:10.1134/s0021364010110044Filippov, A. V., Starostin, A. N., Tkachenko, I. M., & Fortov, V. E. (2011). Dust acoustic waves in complex plasmas at elevated pressure. Physics Letters A, 376(1), 31-38. doi:10.1016/j.physleta.2011.10.030Adamyan, V. M., & Tkachenko, I. M. (2003). Sum rules and exact relations for quantal Coulomb systems. Contributions to Plasma Physics, 43(56), 252-257. doi:10.1002/ctpp.200310020I. M. Tkachenko Yu. V. Arkhipov A. Askaruly “The Method of Moments and its Applications in Plasma Physics”, Lambert Acad. Publ., Saarbrücken, Germany, 2012.Dolgov, O. V., Kirzhnits, D. A., & Maksimov, E. G. (1981). On an admissible sign of the static dielectric function of matter. Reviews of Modern Physics, 53(1), 81-93. doi:10.1103/revmodphys.53.81Maksimov, E. G., Dolgov, O. V., & Dolgov, O. V. (2007). Physics-Uspekhi, 50(9), 933. doi:10.1070/pu2007v050n09abeh006213M. G. Krein A. A. Nudel'man “The Markov moment problem and extremal problems”, Trans. of Math. Monographs 50 , Amer. Math. Soc., Providence, R. I., 1977.N. I. Akhiezer “The Classical Moment Problem”, Hafner Publishing Company, New York, 1965.A. A. Abrikosov L. P. Gorkov I. E. Dzyaloshinski “Methods of Quantum Field Theory in Statistical Physics”, Pergamon Press, 1965.A. N. Starostin in Proceedings of IXth International Conference on Phenomena in Ionized Gases (Bucharest, 1969), p. 366.Starostin, A. N., Roerich, V. C., & More, R. M. (2003). How correct is the EOS of weakly nonideal hydrogen plasmas? Contributions to Plasma Physics, 43(56), 369-372. doi:10.1002/ctpp.200310048Starostin, A. N., & Roerich, V. C. (2005). A converging equation of state of a weakly nonideal hydrogen plasma without mystery. Journal of Experimental and Theoretical Physics, 100(1), 165-198. doi:10.1134/1.1866208Fasolino, A., Parrinello, M., & Tosi, M. P. (1978). Static dielectric behavior of charged fluids near freezing. Physics Letters A, 66(2), 119-121. doi:10.1016/0375-9601(78)90013-0Ng, K. (1974). Hypernetted chain solutions for the classical one‐component plasma up to Γ=7000. The Journal of Chemical Physics, 61(7), 2680-2689. doi:10.1063/1.1682399Baus, M. (1980). Statistical mechanics of simple coulomb systems. Physics Reports, 59(1), 1-94. doi:10.1016/0370-1573(80)90022-
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