1,342 research outputs found

    Modern English political vocabulary: etymological aspect

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    В статье рассматривается происхождение ряда современных политических терминов английского языка, а также некоторых лексических единиц, относящихся к сфере политического жаргона.The article deals with the origins of a number of modern English political terms and some lexical units belonging to the sphere of political jargon

    The Strategic Analysis of Digital Solutions Implementation in the Urban Governance

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    The article aimed to conduct strategic analysis of digital solutions implementation in the urban governance. For that purpose international practice of digital transformation of such cities as Singapore, Shanghai, Hong Kong, London and Barcelona was discussed and the best practices of digital solutions implementation in Moscow and other Russian regions were identified.Taking into account cities economic and demographic growth in the modern world, the new reality possesses principally new tasks in the sphere of urban governance and development.There is a gradual revision of the governance of urban development approaches under these conditions. It is increasingly based on advanced technological solutions, digitalization and platformi-zation

    Model testing of radioactive contamination Cs-137 of soils and bottom sediments in the Romachka river (Tomsk region, Russia)

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    This paper presents results of testing models for the radioactive contamination of river water and bottom sediments by 137Cs. The scenario for the model testing is based on data from the Romashka River, which was contaminated as a result of accidents at the Siberian Chemical Combine (Russia, Region of Tomsk). The input data include the following: estimates of inventories of 137Cs in the floodplain of the downstream part of Romashka River; the estimated annual runoff of 137Cs from the downstream part of Romachka River; data on the precipitation, hydrological and hydrochemical characteristics of the river. The endpoints of the scenario are model predictions of the activity concentrations of 137Cs in water and bottom sediments along the Romachka River in 2012-2013. Calculations for the Romashka scenario were performed by the Institute of radioprotection and nuclear safety (model CASTEAUR and HAMSTER. As a whole, the radionuclide predictions for137Cs for all considered models. At the same time the CASTEAUR model estimate the activity concentrations of 137Cs and in water more precisely than in bottom sediments

    Redescription of Ligophorus mediterraneus Sarabeev, Balbuena & Euzet, 2005 (Monogenea: Ancyrocephalidae) with some methodological notes

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    A redescription of Ligophorus mediterraneus Sarabeev, Balbuena & Euzet, 2005, based on original material from the Black and Mediterranean Seas, is presented and new diagnostic characters for its recognition are proposed. The unlikely wide range of variation in the angle between the shaft and point of the anchors, reported for this species and for some others in the genus, is analysed, and the structure of the ventral bar in Ligophorus spp. is described and its taxonomic significance discussed

    Redescriptions of Ligophorus cephali Rubtsova, Balbuena, Sarabeev, Blasco-Costa & Euzet, 2006 and L. chabaudi Euzet & Suriano, 1977 (Monogenea: Ancyrocephalidae), with notes on the functional morphology of the copulatory organ

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    Redescriptions of Ligophorus cephali Rubtsova, Balbuena, Sarabeev, Blasco-Costa & Euzet, 2006 and L. chabaudi Euzet & Suriano, 1977 based on original material from the Black Sea, the Mediterranean Sea and the Sea of Japan are presented. A comparison of samples of these two species from different regions was carried out with the aid of principal components analysis. The occurrence of L. chabaudi on Mugil cephalus in the Sea of Japan was confirmed. The functional morphology of the male copulatory organ was examined, and the use of the shape of this structure in the taxonomy of Ligophorus Euzet & Suriano, 1977 is discussed

    Proton and carbon-ion minibeam therapy: from modeling to treatment

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    Arrays of minibeams of protons and 12^{12}C in tissue-like media were modeled with Geant4 toolkit. A set of beam energies was used in simulations to provide a Spead-out Bragg peak (SOBP) extended by 6 cm in depth for protons as well as for 12^{12}C. In both cases, beams of 0.3 mm or 0.5 mm FWHM were arranged at the entrance to a water phantom either on a rectangular or an hexagonal grid to compare two kinds of projectiles and different minibeam patterns. Differential and cumulative dose-volume histograms (DVH) were calculated and compared for protons and 12^{12}C as dose uniformity metrics. A uniform dose distribution was easily achieved with protons due to an enhanced lateral scattering of these projectiles in comparison to 12^{12}C. The cumulative DVHs calculated for 0.3 mm or 0.5 mm minibeams almost coincide in the target volume, but diverge for different grid patterns. In contrast, cumulative entry DVHs were found similar for both grid patterns, but different for 0.3 mm and 0.5 mm minibeams.Comment: 8 pages, 5 figures, talk given at the XXV International Baldin Seminar on High Energy Physics Problems "Relativistic Nuclear Physics and Quantum Chromodynamics", September 18-23, 2023, Dubna, Russi

    A discrete slug population model determined by egg production

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    Slugs are significant pests in agriculture (as well as a nuisance to gardeners), and it is therefore important to understand their population dynamics for the construction of efficient and effective control measures. Differential equation models of slug populations require the inclusion of large (variable) temporal delays, and strong seasonal forcing results in a non-autonomous system. This renders such models open to only a limited amount of rigorous analysis. In this paper, we derive a novel batch model based purely upon the quantity of eggs produced at different times of the year. This model is open to considerable reduction; from the resulting two variable discrete-time system it is possible to reconstruct the dynamics of the full population across the year and give conditions for extinction or global stability and persistence. Furthermore, the steady state temporal population distribution displays qualitatively different behavior with only small changes in the survival probability of slugs. The model demonstrates how small variations in the favorability of different years may result in widely different slug population fluctuations between consecutive years, and is in good agreement with field data

    Analysis of the low temperature ceramics structure with consideration for polydispersity of initial refractory components

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    The results of computer simulation of the structure and physical properties of sintered low-temperature ceramics specimens with different volume fractions of different components of refractory components are presented. Properties of sintered ceramics, residual porosity, and shrinkage anisotropy are determined by features of packing of various fractions of refractory particles. The results indicate the determining factor of the presence of particles of the coarse fraction of refractory components capable of forming a internal skeleton of interacting particles

    П'ята міжнародна наукова-практична конференція «Комп’ютерне моделювання в хімії і технологіях та системах сталого розвитку»

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    Робота присвячена питанням розробки та обґрунтування моделі прогнозування надійності об'єктів підвищеної небезпеки (ОПН) різних виробництв на основі аналізу груп факторів. При побудові оцінки працездатності ОПН до уваги беруться умови експлуатації, матеріал, що використовується, і ступінь відновлення. На основі запропонованого методу планується розробка математичної моделі.The work is dedicated to the development and validation of the reliability prediction model of high-risk facilities based on different groups of factors analysis. When building a health assessment of high-risk takes into account the operating conditions, material used, and the degree of recovery. On the basis of the proposed method is planned to develop a mathematical model.Работа посвящена вопросам разработки и обоснования модели прогнозирования надёжности объектов повышенной опасности (ОПО) различных производств на основе анализа групп факторов. При построении оценки работоспособности ОПО учитываются условия эксплуатации, материал, используемый, и степень восстановления. На основе предложенного метода планируется разработка математической модели
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