40,620 research outputs found
On the class of limit distributions for thinning currents of homogeneous events
No full textThe abstracts (in two languages) can be found in the pdf file of the article.
Original author name(s) and title in Russian and Lithuanian:
И. Н. Коваленко, О классе предельных распределений для редеющих потоков однородных событий
I. N. Kovalenko, Apie homogeninių įvykių retėjančių srautų ribinių pasiskirstymų klas
On the class of limiting distributions for a sequence of series of sums of independent renewals
No full textThe abstracts (in two languages) can be found in the pdf file of the article.
Original author name(s) and title in Russian and Lithuanian:
И. И. Коваленко, О классе предельных распределений для последовательности серий сумм независимых процессов восстановления
I. N. Kovalenko, Apie nepriklausomų atstatymo procesų serijų sekos sumų ribinių pasiskirstymų klas
Non-Binary Cryptographic Functions for Symmetric Ciphers
No full textThis article explores the methods of mathematical description of regular nonlinearity replacement nodes, computing techniques for their design and evaluation of cryptographic indicators. Non-binary functions are also studied with the help of which we form regular nonlinearity replacement nodes. The results of a computational search for S-boxes using the proposed approach are presented. In terms of nonlinearity and autocorrelation, the formed replacement nodes are shown to have improved properties
Monitoring Of Animal Dirofilariosis Incidence In Kharkiv Region Of Ukraine
No full textPaliy, A. P., Sumakova, N. V., Pavlichenko, O. V., Palii, A. P., Reshetylo, O. I., Kovalenko, L. M., Grebenik, N. P., Bula, L. V. (2022): Monitoring Of Animal Dirofilariosis Incidence In Kharkiv Region Of Ukraine. Zoodiversity 56 (2): 153-164, DOI: 10.15407/zoo2022.02.153, URL: http://dx.doi.org/10.15407/zoo2022.02.15
The book, dedicated to the plants of grass and subshrub layer – Kovalenko I. M. Ecology of the lower layer plants of forest ecosystems. – Sumy : University Book, 2015. – 360 p.
No full textA large array of information regarding the study of forest vegetation, represented by a great number of scientists, demonstrates the relevance of this direction and at the same time the gaps of existing research on this field. The author of the book is Ihor Mykolayovych Kovalenko, a representative of Sumy ecologists and botanists, a native of the scientific school of the well-known biogeocenologist and ecologist Julian A. Zlobin. The monograph is structured into 8 chapters, conclusions and a list of references. It is worth noting the presence of numerous diagrams, tables and figures which appropriately complement the text material. The peculiarity of the work is that the author, focusing on the lower layer plants of forest ecosystems, has also shown and analyzed the impact of various components of forest ecosystems on each other. This approach is characterized by a complexity which certainly enhances the practical value of the publication and the results it provides. The book is a comprehensive study of the plants of grass and subshrub layer of forest ecosystems. However, the author focuses on the need to conduct the constant monitoring of individual components and ecosystems in general, limited to the nature reserve areas. This publication may be recommended as a methodological manual while conducting such research. Outline of the book sections presented above clearly demonstrates a comprehensive and in-depth study of the lower layer plants of forest ecosystems in the north-east of Ukraine. In general, we believe that the reviewed scientific work of I. M. Kovalenko «Ecology of the lower layer plants of forest ecosystem» is a major contribution to the scientific literature on ecology and sozology. It will undoubtedly find a positive response in the wide circles of ecologists, geobotanists and phytosozologs. </jats:p
Mellicta aurelia subsp. aurelia aurelia (Nickerl 1850
No full textM. aurelia aurelia (Nickerl, 1850) 1 ♂ (dissected), Moscow Region, Lukhovitsy Distr., Chernaya station, 8. VI.2010, V. Proklov (coll. M.G. Kovalenko); 1 ♀ (dissected) Crimea, Bakhchysarai Distr., Mangup, 28. VI.2008, Bush M.G. leg. (coll. M.G. Kovalenko); 1 ♂ (dissected) Crimea, southern foothills of the Chatyr-Dah, 12.VII.1955 (DEMSU); 1 ♂ (dissected), Crimea, Yayla, Lesnoe v., Silchenko leg. (DEMSU); 2 ♂ (dissected), 2 ♀ (dissected), Crimea, Yalta City Municipality, Ai-Petri, 7. VI.2014, Bush M.G. leg. (coll. M.G. Kovalenko); 1 ♂ (dissected), 1 ♀ (dissected), Vinnitsa Region, Mohyliv-Podilskyi Distr., env. of Nemyya Vill., 14. VI.2007, I. Plyushch (coll. M.G. Kovalenko); 1 ♂ (dissected), Moscow Region., Yegoryevsk, Nikitkino Vill., 4.VII.1928, A. Tsvetaev (ZMMU); 4 ♂ (dissected), Volgograd Region, Kamyshyn Distr., Scherbatovka v. vicinity 25. VI.2007, Bush M.G. leg. (ZMMU); 1 ♂ (dissected), Orenburg Region, Kuvandyk, steppe, 12. VI.2007. (coll. M.G. Kovalenko); 1 ♀ (dissected), Orenburg Region, Orsk, the Kuvandyk River 27. VI.1927, Pashin (ZMMU); 1 ♂ (dissected), Orenburg Region Buzuluk, V. N. Bostanzhoglo, (DEMSU); 6 ♂ 2 ♀ (dissected). Chelyabinsk Region, ~ 8 km south of Chebarkul, 22. VI.2013, Kolesnichenko K. (DEMSU); 2 ♂ (dissected), Chelyabinsk Region, near Magnitogorsk, Arkaim v., 22. VI.2005, A. Nikolaev (DEMSU); 3 ♂ (dissected), 3 ♀ (dissected), Republic of Bashkortostan, Uchaly Distr., Yalchigulovo v. vicinity, Nurali ridge, 19–20. VI.2008, Zakharova E., Tuneva T. leg. (coll. M.G. Kovalenko); 1 ♂ (dissected), 1 ♀ (dissected), Tyumen Region (southern part), ~ 75 km SW of Ishim, Berdyuzhsky Distr., Glubokoe v. vicinity, 25. VI.2013, K. Kolesnichenko (DEMSU); 1 ♂ (dissected), 1 ♀ (dissected), Omsk Region, ~10 км SE of Kalachinsk, 27. VI.2013, K. Kolesnichenko (DEMSU); 3 ♂ (dissected), 3 ♀ (dissected), Novosibirsk Region, Karasuk Distr., Troitskoe v. vicinity, 10–11.VII.2013, Bush M.G. leg. (coll. M.G. Kovalenko).Published as part of Kovalenko, Margarita G., Kolesnichenko, Kirill A. & Kudryavtseva, Anna A., 2020, Revealing the specific status of Mellicta distans Higgins, 1955, stat. n. (Lepidoptera Nymphalidae) with morphological and molecular characters, pp. 353-368 in Zootaxa 4853 (3) on page 368, DOI: 10.11646/zootaxa.4853.3.2, http://zenodo.org/record/441080
Diffusive author(s), cohesive author: Analysis of S/N (1994)
No full textThis study indicates the ways in which various aspects of the author(s) are brought forth in Dumb type’s performance art, the S/N production. Previous research has suggested a non-hierarchical organization of Dumb type and the absence of a “privileged author” in Dumb type’s collaborative work, S/N. However, the results that I have investigated from member’s interviews on the creative process of S/N along with my analysis of the recorded images of S/N, indicate a different aspect of the author(s). First, S/N was created through, so to speak, the collective ideas of the members of Dumb type. Further, S/N has at least nine quotations from previous performances, installations, and printed writings, besides the work-in-progress technique. Explicating one of the “author functions” as given by Michel Foucault, each text has plural subjects of the author. However, it has been revealed from members’ interviews that Teiji Furuhashi had a decision-making role in selecting the members’ ideas within the performance. Since then, S/N has had plural subjects of creation; however, Furuhashi is one of the subjects of creation along with the “privileged author.” S/N has plural authors (diffusive authors) yet at the same time, it has a “privileged author,” Teiji Furuhashi (cohesive author)
Size- and Temperature-Dependent Lattice Anisotropy and Structural Distortion in CsPbBr3 Quantum Dots by Reciprocal Space X-ray Total Scattering Analysis
No full textLead halide perovskite nanocrystals (NCs) have emerged as next-generation semiconductors capable of unifying superior photoemission properties, facile and inexpensive preparation, compositional and structural versatility. Among them, CsPbBr3 is a model system in theoretical and experimental studies owing to its intrinsic chemical stability. Nonetheless, knowledge of the precise magnitude and the size- and temperature-dependent lattice and structural distortions is lacking, and the static/dynamic nature of disorder in NCs remains an open question. Herein, robust reciprocal space X-ray total scattering analysis is applied and accurate lattice distortions, Pb-Br bond distances, and Pb-Br-Pb angles versus NCs size are extracted. The lattice anisotropy increases upon expansion on downsizing while, upon contraction on cooling, the lattice distortion behaves differently at intermediate (9 nm) and ultrasmall (5 nm) sizes and from the bulk. Bond distances (stretched by ≈1%) do not show any size dependence, whereas equatorial and axial angles denote more symmetric octahedral arrangements in the smallest sizes, where they differ by ≈2° compared to ≈8° in the bulk. Anomalously high atomic displacement parameters of axial bromine ions persisting down to cryogenic temperatures suggest statically disordered octahedral tilts. These results provide insights having important implications on size-dependent emission properties and the exciton fine structure
(Table 33) Chemical composition of Fe-Mn nodules and crusts from the West Pacific
No full textAnalyses have been carried out by S.P. Slavkina, V. Bakilina, V.V. Kovalenko, and A.I. Grigoriev
Anhedonia in the shadow of chronic social defeat stress, or When the experimental context matters
No full textOne of the core symptoms of major depression in human is anhedonia. For that reason, one of the main requirements towards experimental depression models is that they be able to demonstrate anhedonia in animals, that have been exposed to stressful events, and other behavioral changes attributable to a depression-like state. However, the results presented in the literature are contradictory: sweet solution intake, which is considered as a parameter of hedonic/anhedonic behavior in animals, responds quite differently to stressful situations in that it is either unaffected or increased or decreased. Different experimental designs used for the study of anhedonia in male mice exposed to chronic social defeat stress were tried to understand the reasons for so contradictory responses. Anhedonia appears as an abrupt reduction in sweet solution consumption in stressed animals and by failure to attain recovery after deprivation. However, it was also demonstrated that sucrose solution intake and preference strongly depend on the experimental context; that the possible critical factor may be prior acquaintance with the hedonic stimulus – or the lack whereof. Analysis of literature data and ours allowed us to conclude that the lack of a significant decrease in sweet solution intake in stressed animals is no evidence of lack of depression. This decrease is evidence of anhedonia only provided other symptoms of depression are present. Hedonic consumable intake can be decreased over various motivations, conditions or diseases, in particular, a high level of anxiety or pathological aggression
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