235 research outputs found
On the anniversary of the breeder Grigory Fedorovich Monakhos
No full textOn March 20, 2024, an outstanding Russian breeder Grigory Fedorovich Monakhos, Head of a scientific school in the field of vegetable breeding, turned 70 years old. The labor, scientific and pedagogical activities of Grigory Fedorovich for more than forty years have been associated with «Timiryazevka” – the Russian State Agrarian University – Moscow Timiryazev Agricultural Academy. Grigory Fedorovich is the author/co-author of more than 70 hybrids of vegetable crops, of which more than 40 are of white cabbage. In his breeding work, G.F. Monakhos paid the greatest attention to the most complex aspects: the genetic resistance of plants to phytopathogens and pests. Under his leadership, 18 candidates of science defended their theses. G.F. Monakhos is a co-author of more than 130 publications, including a textbook and educational manuals. Grigory Fedorovich is a member of the editorial boards of scientific journals “Izvestiya of Timiryazev Agricultural Academy” and “Potato and Vegetables”
Another Loveless Father: Grigory in Dostoevsky???s The Brothers Karamazov
No full textOne of the major themes of The Brothers Karamazov is fathers and sons, whose bonds allow the author to explore the idea of active love. In the novel, positive father figures, such as Father Zosima, are presented alongside negative ones. Fyodor Karamazov is usually seen as the novel???s prime example of a loveless father, but another father is also worthy of critical attention in this regard: Grigory, Fyodor Karamazov???s loyal servant and Smerdyakov???s foster father. As a father, Grigory seems as incapable of love as Fyodor Karamazov. In fact, when discussing the evil nature of Smerdyakov, Golstein has argued that Grigory is ultimately to blame because his ???stubbornness, dogmatism, and constantly judgmental nature??? (98) have lead him to play a ???destructive role in the shaping of Smerdyakov??? (96). The text certainly provides ample evidence of Grigory???s disastrous conduct as a parent. In the account of Smerdyakov???s childhood, Grigory???s verbal and physical abuse of his foster son is repeatedly mentioned. But while Grigory???s negative role in Smerdyakov???s existence is unquestionable, what remains to be examined is the reason for Grigory???s hatred of him. Since Smerdyakov is a person nearly impossible to like, readers of the novel might well take Grigory???s harsh treatment of his foster son for granted. Yet I would argue that understanding Grigory???s motives requires more than judgments about his character. A more complete analysis of Grigory???s relationship with Smerdyakov will help explain what drives Grigory to become an unloving father. To this end, I will look into the motives, both on conscious and subconscious levels, for Grigory???s antagonism toward Smerdyakov
Intuitions of future in “existential diaries” of 1920–1930s: Grigory Tseretely, Mikhail Prishvin, Gustav Shpet
No full textA key theme of this article is the relation of the eminent Russian intellectuals: scientist (Grigory Tseretely), writer (Mikhail Prishvin), philosopher (Gustav Shpet) to educational reforms of 1920–1930s in Soviet Russia expressed in their letters and diary notes. The author considersthese records to be an invaluable existential experience which bears evidence of historical dependency of the modern state of intellectual culture and education system in Russia
“THE JOURNAL OF TRAVELS TO RUSSIA’S EASTERN LAND IS SURE TO BE INTERESTING FOR THE PUBLIC...”: ON GRIGORY I. SPASSKY’S PARTICIPATION IN THE ACTIVITY OF THE FREE SOCIETY OF LOVERS OF LITERATURE, SCIENCE AND THE ARTS
No full textThe present research is dedicated to the initial period of the academic career of Grigory I. Spassky (the editor of the first magazine about Siberia in Russia). The main issue studied in the present article is Grigory I. Spassky’s participation in the activity of the Free Society of Lovers of Literature, Science and the Arts (VOLSNKh) in 1803-1823. This particular issue has never been studied; in the Russian historiography there are a few works where this fact was only mentioned. The author has been considered and analyzed the correspondence of Grigory I. Spassky with the members of VOLSNKh, as well as the contents of periodicals of the time, which were connected with VOLSNKh, such as “Severny Vestnik” [Northern Bulletin], “Tsvetnik” [Flower Garden], “Vestnik Evropy” [European Bulletin]. The research has revealed the facts of Grigory I. Spassky’s close collaboration with the Free Society; and in the beginning the Society played a leading role in the choice of the young scientist’s research areas. Through the VOLSNKh, on the pages of the Society’s periodicals there were published Spassky’s first articles, which brought him fame in the literary and research circles. Under the infl uence of the VOLSNKh banders’ recommendations, Grigory I. Spassky got the idea to publish his Siberian Sketchbook. This idea transformed into the plan of a periodical about Siberia and “some countries adjacent to it”. The publication made by Grigory I. Spassky on his return from Siberia in 1817 was called “Sibirsky Vestnik [Siberian Bulletin]”, and Spassky’s co-editor was one of the VOLSNKh members, Vasily V. Dmitriev. Thus, the analysis of the correspondence and the articles of some periodicals, connected with the VOLSNKh undoubtedly convinces that the members of the VOLSNKh made a great influence on the formation of the scientific worldview of the explorer of Siberia, Grigory I. Spassky
“The Eavesdropped Voice of a Risible Dream”: Neo-Primitivism in Grigory Musatov’s Oil Painting of the 1920s
No full textСтатья поступила в редакцию 30.04.2015 г.Статья посвящена одному из периодов творчества русского художника-эмигранта Г. А. Мусатова (1889–1941), жившего и работавшего в Чехословакии, преимущественно в Праге в 1920–1941 гг. В тексте отражены результаты исследования живописи мастера 1920-х гг., встраивающейся в стилистику неопримитивизма. В статье описывается и анализируется специфика творческого метода Г. Мусатова и особенности использования им неопримитивистских художественных приемов. На примере конкретных живописных произведений художника разбираются черты его индивидуального подхода к переработке и интерпретации ряда явлений народной культуры и городского фольклора (иконопись, народная роспись, лубок, провинциальная портретная фотография). Творчество Г. А. Мусатова рассматривается в контексте развития неопримитивизма не только в русском, но и в чешском искусстве первой трети ХХ в.The article is devoted to one of the periods of creative work of Grigory Musatov (1889–1941), a Russian émigré artist, who lived and worked in Czechoslovakia, mostly in Prague between 1920 and 1941. The text is based on the research of Musatov’s paintings of the 1920s that fit in the stylistics of neo-primitivism. The author describes and analyzes the specificity of his creative method and the peculiarity of his neo-primitivist artistic methods. The features of Musatov’s individual way of revision and interpretation of folk culture and urban folklore (icon-painting, folk painting, popular print, provincial portrait photography) are examined referring to a number of the artist’s paintings. Grigory Musatov’s creative work is analyzed in the context of neoprimitivism development not only in Russian but also in Czech art of the first third of the 20th century
Astronomie des rayons gamma avec des particules de type axion et recherche de champs magnétiques intergalactiques
No full textLes rayons gamma d'énergies supérieures à 30 GeV ne peuvent pas voyager librement à travers l'Univers en raison de leur interaction avec la lumière d'arrière-plan extragalactique (EBL). Dans ces interactions, les rayons gamma produisent des paires électron-positon secondaires, qui à leur tour diffusent vers le haut les photons du fond diffus cosmologique (CMB). La cascade électromagnétique qui en résulte modifie le spectre intrinsèque de la source à la fois aux hautes et basses énergies. Aux hautes énergies, le flux est réduit en raison de l'absorption des photons primaires. Aux énergies inférieures, il y a un flux supplémentaire provenant de la cascade électromagnétique. Les propriétés des cascades électromagnétiques peuvent être utilisées pour étudier les champs magnétiques intergalactiques (IGMF) à travers des observations du retard temporel des photons secondaires, des signatures dans les spectres et de l'émission étendue autour des sources ponctuelles. Les mêmes données peuvent être utilisées pour étudier les empreintes des particules hypothétiques de type axion (ALP), l'un des principaux candidats à la matière noire, dans le spectre des sources de rayons gamma. La future expérience de rayons gamma Cherenkov Telescope Array (CTA) prévoit de mesurer les flux de blazars dans la gamme d'énergie de 30 GeV à 30 TeV avec une sensibilité 10 fois supérieure aux mesures actuelles. L'objectif de cette thèse est de modéliser les phénomènes ci-dessus, en tenant compte des modèles récents de lumière de fond extragalactique et de faire des prédictions de modèles pour les futures mesures CTA. Tout d'abord, nous construisons un nouveau modèle EBL flexible et examinons sa dépendance vis-à-vis des principaux paramètres astrophysiques qui le sous-tendent. En utilisant les données de rayons gamma disponibles, nous avons défini des contraintes sur les paramètres de la caractéristique spectrale étroite supplémentaire dans le spectre EBL, puis nous les avons converties en contraintes sur la constante de couplage ALP avec les photons. D'autre part, nous estimons la sensibilité du CTA pour les champs magnétiques cosmologiques forts et montrons qu'il peut être utilisé pour sonder un champ magnétique d'une force allant jusqu'à 10−12 G – 10−11 G. Enfin, nous discutons de deux classes d'erreurs systématiques, qui doivent être prises en compte lors de l'étude de l'IGMF avec la technique des rayons gamma. La première classe est associée à l'effet de rétroaction baryonique et la seconde aux imprécisions de la simulation numérique.Gamma-rays of energies above 30 GeV can not freely propagate through the Universe due to their interaction with the Extragalactic Background Light (EBL). In these interactions gamma-rays produce secondary electron-positron pairs, which in turn up-scatter Cosmic Microwave Background (CMB) photons. Resulting electromagnetic cascade changes the intrinsic spectrum of source both at high and low energies. At high energies flux is reduced due to absorption of primary photons. At lower energies there is an additional flux from electromagnetic cascade. Properties of electromagnetic cascades can be used to study intergalactic magnetic fields (IGMF) through observations of the time delay of the secondary photons, signatures in the spectra and extended emission around the point sources. Same data can be used to study the imprints of the hypothetical axion-like particles (ALP), one of the main Dark Matter candidates, in the spectra of gamma-ray sources. The future gamma-ray experiment Cherenkov Telescope Array (CTA) plans to measure the fluxes of blazars in the energy range from 30 GeV to 30 TeV with sensitivity 10 times superior to present measurements. The goal of this thesis is to model the above phenomena, taking into account the recent models of extragalactic background light and make model predictions for the future CTA measurements. First, we build a new, flexible EBL model and examine its dependence on the main astrophysical parameters underlying it. Using available gamma-ray data we set constraints on the parameters of the additional narrow spectral feature in the EBL spectrum and then convert them into constraints on the ALP coupling constant with photons. On the other hand, we estimate sensitivity of the CTA for strong cosmological magnetic fields and show that it can be used to probe magnetic field with a strength up to10−12 G – 10−11 G. Finally we discuss two classes of systematic errors, which must be taken into account when studying IGMF with gamma-ray technique. The first class is associated with the baryonic feedback effect, and the second -- with inaccuracies of numerical simulation
Constraining anisotropic models of the early universe with WMAP9 data
No full textWe constrain several models of the early Universe that predict a statistical anisotropy of the cosmic microwave background (CMB) sky. We make use of WMAP9 maps deconvolved with beam asymmetries. As compared to previous releases of WMAP data, they do not exhibit the anomalously large quadrupole of statistical anisotropy. This allows us to strengthen the limits on the parameters of models established earlier in the literature. In particular, the amplitude of the special quadrupole is constrained asSCOPUS: ar.jinfo:eu-repo/semantics/publishe
Revisiting constraints on the (pseudo)conformal universe with Planck data
No full textWe revisit constraints on the (pseudo)conformal universe from the nonobservation of statistical anisotropy in the Planck data. The quadratic maximal likelihood estimator is applied to the Planck temperature maps at frequencies 143 and 217 GHz as well as their cross-correlation. The strongest constraint is obtained in the scenario of the (pseudo)conformal universe with a long intermediate evolution after conformal symmetry breaking. In terms of the relevant parameter (coupling constant), the limit is h2<0.0013 at 95% C.L. (using the cross estimator). The analogous limit is much weaker in the scenario without the intermediate stage (h2lnH0Λ<0.52) allowing the coupling constant to be of order 1. In the latter case, the non-Gaussianity in the four-point function appears to be a more promising signature.SCOPUS: ar.jinfo:eu-repo/semantics/publishe
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