898 research outputs found
Construction 3D printing
No full textThe purpose of the Bachelor's thesis was to start study in the sphere of the construction 3D printing for university, to begin to analyse the topic and to present relevant data for other authors who could continue to study 3D construction printing area. The research constituent of the thesis comprises comparison of large-scale 3D-printers (construction 3D-printers) to small-scale ones (ceramic 3D-printers).
The first part of the thesis comprises a description of the process of 3D printing, in this section the author shows companies and real models produced with ceramic 3D printers, their specifications, and performance. Information on prices and technical characteristics were gathered from the official websites of producers.
The second part of the thesis comprises a description of methodology of additive production for small-scale 3D printers. 3D printing was taken as example by the author because it bears much resemblance to the concrete 3D printing. Various key methods were collected and described based on data from other publicly available research articles and reports.
The third part of the thesis contains practical issues and difficulties of construction 3D printing. 3D printing is known by its several benefits over standard methods. The author`s main point was to demonstrate the advantages and findings obtained from real projects. This section describes the major manufacturers and construction 3D printers. Also, this part contains the analysis of the workflow and various kinds of 3D printers.
The outcome of the thesis deciding on the selection of construction 3D printing technology based the results of a comparative analysis of small-scale and large-scale construction 3D printing
Max Baucus and Aleksandr Solzhenitsyn
No full textRepresentative Max Baucus shaking hands with Russian author Aleksandr Solzhenitsyn.https://scholarworks.umt.edu/baucus_photographs/1029/thumbnail.jp
Polish features in the Aleksandr Solzhenitsyn’s writing
No full textPoland and Polish people are shown in the Aleksandr Solzhenitsyn’s writing in the context
of complicated Polish-Russian relations. In Repentance and Self-limitation the author criticises Polish nation for being unable to repent and admit making mistakes in the past in a historical context. At the same time he claims that Russians have a natural ability to repentance, that is a condition of a moral renewal of a nation. Nevertheless, the overall picture of the Polish nation in Solzhenitsyn’s writing is positive. This Russian Nobel prize winner highlights Polish courage, pride and their undeterred struggle for freedom. In The Gulag Archipelago the author eternalises a Polish scientist named Jerzy Wegierski, a prisoner of a forced labour camp, who had been Solzhenitsyn’s friend till his death. It is also very important to highlight Solzhenitsyn’s respect and attitude toward the Pope John Paul II. The article is an attempt to recall and analyse Polish features in the Aleksandr Solzhenitsyn’s writing
Śmierć jako problem życia: Jurij Łotman, Rolandas Pavilionis, Aleksandr Piatigorskij
No full textRegina Čičinskajte
University of Vilnius, Lithuania
[email protected]
ŚMIERĆ JAKO PROBLEM ŻYCIA:JURIJ ŁOTMAN, ROLANDAS PAVILIONIS, ALEKSANDR PIATIGORSKIJ
Streszczenie
Autorka świadoma odrębności myślenia filozofa i filologa analizuje temat śmierci w dziełach Jurija Łotmana, Rolandasa Pavilionisa oraz Aleksandra Piatigorskiego. Podkreśla, że zaistniał on w pracach wymienionych autorów bez religijnego podtekstu, w wymiarze czysto fenomenologicznym. Artykuł poszerzony został o refleksje na tytułowy temat z twórczości Władysława Chodasiewicza, Anny Achmatowej oraz Meraba Mamardaszwili.
DEATH AS A PROBLEM OF LIFE:YURI LOTMAN, ROLANDAS PAVILIONIS, ALEKSANDR PIATIGORSKY
Summary
Aware of the distinctiveness of the thinking of the philosopher and the philologist, the author has extracted the theme of death from the texts of Yuri Lotman, Rolandas Pavilionis, Aleksandr Piatigorsky, emphasizing that it has appeared in the works of these writers without any religious background, in the purely phenomenological dimension. The article is broadened with reflections on the works concerning the title theme authored by Vladislav Khodasevich, Anna Akhmatova and Merab Mamardaszvili.
Professor Aleksandr Evgenevich Borisov (on the 70th anniversary of the birth).
No full textAlexander Evgenievich Borisov – head of the Department of surgery named after N. D. Monastyrskii (Available at: https://www.livelib.ru/author/733938/series-aleksandr-borisov
RUSSIAN EMIGRATION IN INTERWAR WARSAW: ALEKSANDR KHIRYAKOV
No full textThis paper is devoted to the cultural activity of the Russian emigrant, writer, journalist, critic and author of the memoirs – Aleksandr Khiryakov (1863-1940)
in interwar Warsaw. His activity proves that he was an important representative of the diaspora, however he was marginalized by literary scholars. Khiryakov was involved in the life of the emigration community as a member of numerous literary groups and social committees. He initiated significant projects, voiced important ideas and actively cooperated with opinion-forming Russian newspapers, which propagated among their readers the conviction of their responsibility for the fate of Russia as well as its political and cultural missions
Factorial experiments
No full textTitle: Factorial Experiments Author: Aleksandr Kuropatov Department of Probability and Mathematical Statistics: Department of Probability and Mathematical Statistics Supervisor: doc. RNDr. Zdeněk Hlávka, Ph.D, Department of Probability and Mathematical Statistics Abstract: This thesis is devoted to the description of the two-sample t-test and analysis of variance ANOVA, which represent important tools in the testing of statistical hypotheses. Subsequently, their permutation variants and their practical application are discussed, including the use of specific notation. In the first part, the theoretical foundations of classical tests are presented; afterward, attention is given to practical situations involving the use of ANOVA, especially in cases where the data are represented by functions, i.e., in the form of functional data. In the final chapter, a simulation study is conducted, aimed at estimating the power and significance level of the permutation ANOVA test. Keywords: Permutation test, Analysis of varianceNázev práce: Faktoriální experimenty Autor: Aleksandr Kuropatov Katedra pravděpodobnosti a matematické statistiky: Katedra pravděpodobnosti a matematické statistiky Vedoucí bakalářské práce: doc. RNDr. Zdeněk Hlávka, Ph.D, Katedra pravděpo- dobnosti a matematické statistiky Abstrakt: Tato práce je věnována popisu dvouvýběrového t-testu a analýzy rozptylu (ANOVA), které představují důležité nástroje při testování statistických hypotéz. Následně jsou rozebrány jejich permutační varianty a jejich praktické využití, včetně použití specifické symboliky. V první části jsou představeny teoretické základy klasických testů, poté je pozornost věnována praktickým situacím využití ANOVA, zejména v případech, kdy jsou data reprezentována funkcemi, tedy v podobě funkcionálních dat. V závěrečné kapitole je pak provedena simulační studie zaměřená na odhad síly a hladiny významnosti permutačního ANOVA testu. Klíčová slova: Permutační test, Analýza rozptylu Title: Factorial Experiments Author: Aleksandr Kuropatov Department of Probability and Mathematical Statistics: Department of Probability and Mathematical Statistics Supervisor: doc. RNDr. Zdeněk Hlávka, Ph.D, Department of Probability and Mathematical Statistics Abstract: This thesis is devoted to the description of the two-sample t-test and analysis of variance ANOVA,...Katedra pravděpodobnosti a matematické statistikyDepartment of Probability and Mathematical StatisticsFaculty of Mathematics and PhysicsMatematicko-fyzikální fakult
The Soviet Aesthetics of Aleksandr Voronsky: A Brief Exposition
No full textThis paper presents a concise exposition of the aesthetic theory of the early Soviet literary critic Aleksandr Voronsky, the editor of Red Virgin Soil who was executed in Josef Stalin?s Great Purge. Despite an anthology of Voronsky?s writings, published for the first time in English in 1998, no English-language scholarly attention has been paid to this work of non-Stalinist Soviet aesthetics. The author focuses on Voronsky?s Marxism-Plekhanovism, his understanding of art and the unconscious, and his method of aesthetic evaluation
Science and pseudo-science in modern studies of Aleksandr Nevskii
No full textThe article provides insight into debates about the life and political activities of Aleksandr Nevskii and
the historical memory of him which have been going on for the last year or two. The author focuses on
arguments used by the scholars in this polemics and analyzes the attempts to cast doubt on the results
of research which has already been conducted. The author recognizes the necessity to take into consideration
the opinions of these scholars who have suggested new interpretations of the sources on the
basis of scientifically tested methodology, hence drawing conclusions about the discreditable facts in
the biography of the prince and the inefficiency of his policy in general (G. Fennell, D. N. Danilevskii).
However, particular emphasis is placed on the insufficient account of the existing historiographic
work as well as the methodically inappropriate use (and sometimes disregard) of the above-mentioned
sources. This drawback is typical of the works of the authors whose insight into the issues they study is
not deep enough and who, nonetheless, are given an opportunity to express their views in leading historical
periodicals. These aspects allow us to determine the development of a tendency to neglect the
works of our historical forbearers — Soviet and Russian historians. As an example, the article provides
the analysis of the theoretical construct A. N. Nesterenko’s article, published in “Voprosy Istorii” (№ 1,
2016) and containing a number of hypotheses that remain unconfirmed by the facts to a considerable
extent. The refutation of these hypotheses does not take a great deal of effort, but makes us refer
once again to the analysis of the sources and to the quite voluminous literature on this subject. That
is why the article provides a representative survey of the statements of the scholars who at different
times touched upon some disputable issues in the frame of the topic “Aleksandr Nevskii”, namely: the
relations of Iaroslav Vsevolodovich with his spouse Feodosiia and father-in-law Mstislav Udaloi (the
Bold), the spread of the practice of placing the minor children of the Rurik house at the prince’s table,
the battle on the Neva, the circumstances of the canonization of Aleksandr, the interpretation of the
chronicles and hagiographical texts, the reports of Tatishchev, and the like. Refs 25.Работа выполнена при поддержке гранта СПбГУ 5.38.265.2015 «Россия — Новороссия — Крым:
Исторические закономерности единства»
Dark Matter production from relativistic bubble walls
No full textIn this paper we present a novel mechanism for producing the observed Dark Matter (DM) relic abundance during the First Order Phase Transition (FOPT) in the early universe. We show that the bubble expansion with ultra-relativistic velocities can lead to the abundance of DM particles with masses much larger than the scale of the transition. We study this non-thermal production mechanism in the context of a generic phase transition and the electroweak phase transition. The application of the mechanism to the Higgs portal DM as well as the signal in the Stochastic Gravitational Background are discussed. © 2021, The Author(s)
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