469 research outputs found

    Measurement of low turbulence levels with a thermoanemometer

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    The trend for decreasing the drag of aircraft is retention of laminar flow in the boundary layer over a large portion of the surface. The laminar boundary layer was studied in a low turbulence wind tunnel for low subsonic velocities. The method used and results of measurements of very low levels of turbulence are presented. Measurements were performed by a constant-resistance thermoanemometer

    Superfield Formulation of Nonlinear N=4 Supermultiplets

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    We propose a unified superfield formulation of N=4 off-shell supermultiplets in one spacetime dimension using the standard N=4 superspace. The main idea of our approach is a "gluing" together of two linear supermultiplets along their fermions. The functions defining such a gluing obey a system of equations. Each solution of this system provides a new supermultiplet, linear or nonlinear, modulo equivalence transformations. In such a way we reproduce all known linear and nonlinear N=4, d=1 supermultiplets and propose some new ones. Particularly interesting is an explicit construction of nonlinear N=4 hypermultiplets.Comment: 16 pages, no figure

    Threshold Resonant Structure of the 232Th Neutron-Induced Fission Cross Section

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    The structures observed in the sub-threshold neutron-induced fission of ^{232}Th were investigated employing a recent developed model. Theoretical single-particle excitations of a phenomenological two-humped barrier are determined by solving a system of coupled differential equations for the motion along the optimal fission path. A rather good agreement with experimental data was obtained using a small number of independent parameters. It is predicted that the structure at 1.4 and 1.6 MeV is mainly dominated by spin 3/2 partial cross-section with small admixture of spin 1/2, while the structure at 1.7 MeV is given by a large partial cross section of spin 5/2.Comment: 17 pages 11 figure

    Some effects of ice crystals on the FSSP measurements in mixed phase clouds

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    In this paper, we show that in mixed phase clouds, the presence of ice crystals may induce wrong FSSP 100 measurements interpretation especially in terms of particle size and subsequent bulk parameters. The presence of ice crystals is generally revealed by a bimodal feature of the particle size distribution (PSD). The combined measurements of the FSSP-100 and the Polar Nephelometer give a coherent description of the effect of the ice crystals on the FSSP-100 response. The FSSP-100 particle size distributions are characterized by a bimodal shape with a second mode peaked between 25 and 35 μm related to ice crystals. This feature is observed with the FSSP-100 at airspeed up to 200 m s<sup>−1</sup> and with the FSSP-300 series. In order to assess the size calibration for clouds of ice crystals the response of the FSSP-100 probe has been numerically simulated using a light scattering model of randomly oriented hexagonal ice particles and assuming both smooth and rough crystal surfaces. The results suggest that the second mode, measured between 25 μm and 35 μm, does not necessarily represent true size responses but corresponds to bigger aspherical ice particles. According to simulation results, the sizing understatement would be neglected in the rough case but would be significant with the smooth case. Qualitatively, the Polar Nephelometer phase function suggests that the rough case is the more suitable to describe real crystals. Quantitatively, however, it is difficult to conclude. A review is made to explore different hypotheses explaining the occurrence of the second mode. However, previous cloud in situ measurements suggest that the FSSP-100 secondary mode, peaked in the range 25–35 μm, is likely to be due to the shattering of large ice crystals on the probe inlet. This finding is supported by the rather good relationship between the concentration of particles larger than 20 μm (hypothesized to be ice shattered-fragments measured by the FSSP) and the concentration of (natural) ice particles (CPI data). In mixed cloud, a simple estimation of the number of ice crystals impacting the FSSP inlet shows that the ice crystal shattering effect is the main factor in observed ice production

    Machine Translation on Instagram Social Networking Service

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    The paper deals with the problem of machine translation adequacy on Instagram social networking service. Authors consider several examples extracted from the accounts of popular tourist destinations in Dubai and Moscow and come to the conclusion that machine translation on the social networking service has not been developed enough.В статье рассматривается проблема адекватности и эквивалентности автоматического перевода в социальной сети Instagram. Авторы рассматривают примеры текстов, размещенных в аккаунтах туристических мест в Дубае и Москве и приходят к выводу о недостаточном развитии функции автоматического перевода в социальной сети

    Language as Decoration in Urban Space: Pandemic Trends

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    В статье рассматривается проблема символического использования (фетишизации) английского языка в лингвистических ландшафтах кафе и кофеен Бангкока, открывшихся в конце 2020 г. Сделан вывод о неугасающей тенденции к использованию иностранных языков в качестве элементов декора и для привлечения пользователей социальных сетей.The article investigates the symbolic usage (fetishisation) of the English language in Bangkok’s cafes and coffeeshops opened in the end of 2020. The author concludes on the on-going trend for using foreign languages as a decoration tool and for attracting social media users

    The Problems of the Replacement of Alternative Penalties Taking into Account the Implementation of International Standards: Case of Some Post-Soviet Countries

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    International standards for the treatment of convicts without isolation from society contain the world experience of humanism in the execution of punishments and the development of the correctional system of all the countries in the world, concerning Russia and the countries of the former Soviet Union, they are adopted and implemented relatively recently. Today not all international standards have found their consolidation in the sectoral legislation of Russia and the CIS and Baltic countries. The execution of punishments is one of the most detailed regulated processes from the point of view of international regulation, as for the classification of the state as democratic, largely affects the compliance of its sectoral legislation in the penitentiary sphere with international standards. The aim of the study is to determine the features of the procedure for the replacement of alternative penalties, taking into account the implementation of international standards in some post-Soviet countries.     Keywords: international standards; alternative punishments; court; Prosecutor’s office; replacement of punishments

    Studying Linguistic Landscapes in the Pandemic

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    В условиях пандемии сбор данных для анализа «языка города» может значительно усложниться. В работе предложены альтернативные способы сбора материала, отличные от полевых методов. На примере собственного раннего исследования продемонстрирована актуальность предложенных методов.In the pandemic, gathering data for a linguistic landscape research may be complicated. The paper presents alternative methods for collecting data, different from field-based approaches. The earlier study is mentioned as an example of how these methods can be used
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