215 research outputs found
Developing the communicative-pragmatic competence in the training of the Russian linguistics bachelor students
The development of the oral and written skills in the practice of teaching foreign languages in the Russian linguistic higher institution pays the major attention to the construction of monologic and dialogical statements without focusing on the pragmatic factors of communication. When mastering language expressions, students do not always correlate them with the specific communicative tasks in a certain situation of foreign language communication, which is due to the ignorance of the pragmatic component. Meanwhile, the correct correlation and use of linguistic units in the process of foreign language communication (adequate to a given situation and intentions) is extremely important at the first or second (freshman and sophomore) years of higher education, when students primarily master the skills of the correct expression means. However, in teaching foreign languages (e.g., German and English), there is a disregard for such pragmatic factors as: setting and defining intentions, social roles and focusing on the interpersonal relations of communicants, targeted communication; isolation of the communicative competence from the pragmatic issues; insufficient study of the discourse content and structure as the means of teaching foreign languages in conjunction with pragmatic characteristics. The authors propose their own methodology for the development of the communicative-pragmatic competence under the conditions of training the prospective bachelors of linguistics. Research methods include systematic approach, provisions of the interdisciplinary approach, competence-based approach, comparative method, modeling method. The communicative-pragmatic model of teaching foreign languages presented in this article has confirmed its effectiveness for the development of oral and written speech practice among bachelor students of the linguistic university. The introduction of the developed methodology will increase the level of the language proficiency and the degree of formation of the students` communicative-pragmatic competence by motivating and expanding their speech capabilities
Development of municipal areas in Republic Mordovia
The purpose of the study is to assess the indicators for 2018 that characterize the levels of economic development of municipal districts of the Republic of Mordovia. The study was based on the modeling of socio-economic indicators using normal distribution functions. An assessment of relative indicators for 22 municipal districts was carried out. Three groups of municipal districts were formed using cluster analysis. It is proposed to use inclusive models for the effective development of municipal districts. Our research has shown that there is differentiation according to the most important indicators, therefore, further development of the considered areas will significantly improve the quality and standard of living in rural areas, as well as increase the investment potential of such territories and attractiveness for living and agricultural development
GRADIENT BOOSTING TREES METHOD IN THE TASK OF SOFTWARE IDENTIFICATION
Subject of Research.The paper proposes an approach to the use of gradient boosted decision trees algorithm. For this purpose, CatBoost algorithm developed by Yandex is proposed. Its implementation is aimed at the problem solution of OS Linux software identification in order to reduce the number of system vulnerabilities, which occur due to the installation of unauthorized software by automated system users. We consider an approach to the program signatures formation and further training of CatBoostClassifier classifier model. The subsequent recognition task is set for the identified programs that were not previously involved in the model training process. Method. Free CatBoost software was used for implementation of the gradient boosted decision trees algorithm. CatBoostClassifier multi-classification model was created on its basis. The use of this model allows identifying test sample elf-files.Main Results. The training parameters of the classification model are selected. An experiment is carried out to identify elf-files with the use of ten different featuresof emerging signature programs. The results obtained in the new approach are compared with the results of the previously developed method of identification based on the application of the statistical criterion of Chi-square homogeneity at the significance level p = 0.01. Practical Relevance. The results of the study can be recommended to information security specialists for data media audit. The developed approach gives the possibility to identify violations of the established security policy in the processing of confidential information
Wave kinetics of random fibre lasers
Traditional wave kinetics describes the slow evolution of systems with many degrees of freedom to equilibrium via numerous weak non-linear interactions and fails for very important class of dissipative (active) optical systems with cyclic gain and losses, such as lasers with non-linear intracavity dynamics. Here we introduce a conceptually new class of cyclic wave systems, characterized by non-uniform double-scale dynamics with strong periodic changes of the energy spectrum and slow evolution from cycle to cycle to a statistically steady state. Taking a practically important example—random fibre laser—we show that a model describing such a system is close to integrable non-linear Schrödinger equation and needs a new formalism of wave kinetics, developed here. We derive a non-linear kinetic theory of the laser spectrum, generalizing the seminal linear model of Schawlow and Townes. Experimental results agree with our theory. The work has implications for describing kinetics of cyclical systems beyond photonics
Two-loop self-dual Euler-Heisenberg Lagrangians (II): Imaginary part and Borel analysis
We analyze the structure of the imaginary part of the two-loop
Euler-Heisenberg QED effective Lagrangian for a constant self-dual background.
The novel feature of the two-loop result, compared to one-loop, is that the
prefactor of each exponential (instanton) term in the imaginary part has itself
an asymptotic expansion. We also perform a high-precision test of Borel
summation techniques applied to the weak-field expansion, and find that the
Borel dispersion relations reproduce the full prefactor of the leading
imaginary contribution.Comment: 28 pp, 6 eps figure
Vector Bosons in the Randall-Sundrum 2 and Lykken-Randall models and unparticles
Unparticle behavior is shown to be realized in the Randall-Sundrum 2 (RS 2)
and the Lykken-Randall (LR) brane scenarios when brane-localized Standard Model
currents are coupled to a massive vector field living in the five-dimensional
warped background of the RS 2 model. By the AdS/CFT dictionary these
backgrounds exhibit certain properties of the unparticle CFT at large N_c and
strong 't Hooft coupling. Within the RS 2 model we also examine and contrast in
detail the scalar and vector position-space correlators at intermediate and
large distances. Unitarity of brane-to-brane scattering amplitudes is seen to
imply a necessary and sufficient condition on the positivity of the bulk mass,
which leads to the well-known unitarity bound on vector operators in a CFT.Comment: 60 pages, 8 figure
Influence of hydrogen and helium plasma streams exposures on modification of tungsten structure under powerful transient loads
Influence of plasma exposures on tungsten behavior was studied in QSPA Kh-50 facility and pulsed plasma gun PPA.
Plasma loads were chosen either below the melting threshold or resulting in pronounced melting. Evolution of residual
stresses and lattice spacing was studied for various number of hydrogen or helium plasma impacts. The value of residual
stresses depends on irradiation dose and kind of impact plasma. The non monotone change of lattice spacing was observed
for melted surface. The damage of exposed surface was caused by cracks appearing.Поведінку вольфрамових мішень при впливі плазмових потоків досліджено на КСПП Х-50 і імпульсивній плазмовій гарматі ІПП. Плазмові навантаження будо обрано нижче порога плавлення і в умовах, що забезпечують явне плавлення. Еволюція залишкових напружень і параметра решітки була досліджена для різної кількості імпульсів водневої або гелієвої плазми. Величина залишкових напружень залежна від дози опромінення та виду плазми, що опромінювала. Немонотонна зміна параметра решітки спостерігалася для розплавленої поверхні. Пошкодження опроміненої поверхні викликано появою тріщин.Поведение вольфрамовых мишеней при воздействии плазменных потоков исследовано на КСПУ Х-50 и импульсной плазменной пушке ИПУ. Плазменные нагрузки были выбраны ниже порога плавления и в условиях, обеспечивающих явленое плавление. Эволюция остаточных напряжений и параметра решетки исследована для различного количества импульсов водородной или гелиевой плазмы. Величина остаточных напряжений зависела от дозы облучения и вида облучающей плазмы. Немонотонное изменение параметра решетки наблюдалось для расплавленной поверхности. Повреждение облученной поверхности вызвано появлением трещин
Interaction of Reggeized Gluons in the Baxter-Sklyanin Representation
We investigate the Baxter equation for the Heisenberg spin model
corresponding to a generalized BFKL equation describing composite states of n
Reggeized gluons in the multi-color limit of QCD. The Sklyanin approach is used
to find an unitary transformation from the impact parameter representation to
the representation in which the wave function factorizes as a product of Baxter
functions and a pseudo-vacuum state. We show that the solution of the Baxter
equation is a meromorphic function with poles (lambda - i r)^{-(n-1)} (r= 0,
1,...) and that the intercept for the composite Reggeon states is expressed
through the behavior of the Baxter function around the pole at lambda = i . The
absence of pole singularities in the two complex dimensional lambda-plane for
the bilinear combination of holomorphic and anti-holomorphic Baxter functions
leads to the quantization of the integrals of motion because the holomorphic
energy should be the same for all independent Baxter functions.Comment: LaTex, 48 pages, 1 .ps figure, to appear in Phys. Rev.
Probing exotic phenomena at the interface of nuclear and particle physics with the electric dipole moments of diamagnetic atoms: A unique window to hadronic and semi-leptonic CP violation
The current status of electric dipole moments of diamagnetic atoms which
involves the synergy between atomic experiments and three different theoretical
areas -- particle, nuclear and atomic is reviewed. Various models of particle
physics that predict CP violation, which is necessary for the existence of such
electric dipole moments, are presented. These include the standard model of
particle physics and various extensions of it. Effective hadron level combined
charge conjugation (C) and parity (P) symmetry violating interactions are
derived taking into consideration different ways in which a nucleon interacts
with other nucleons as well as with electrons. Nuclear structure calculations
of the CP-odd nuclear Schiff moment are discussed using the shell model and
other theoretical approaches. Results of the calculations of atomic electric
dipole moments due to the interaction of the nuclear Schiff moment with the
electrons and the P and time-reversal (T) symmetry violating
tensor-pseudotensor electron-nucleus are elucidated using different
relativistic many-body theories. The principles of the measurement of the
electric dipole moments of diamagnetic atoms are outlined. Upper limits for the
nuclear Schiff moment and tensor-pseudotensor coupling constant are obtained
combining the results of atomic experiments and relativistic many-body
theories. The coefficients for the different sources of CP violation have been
estimated at the elementary particle level for all the diamagnetic atoms of
current experimental interest and their implications for physics beyond the
standard model is discussed. Possible improvements of the current results of
the measurements as well as quantum chromodynamics, nuclear and atomic
calculations are suggested.Comment: 46 pages, 19 tables and 16 figures. A review article accepted for
EPJ
Fragmentation and Multifragmentation of 10.6A GeV Gold Nuclei
We present the results of a study performed on the interactions of 10.6A GeV
gold nuclei in nuclear emulsions. In a minimum bias sample of 1311 interac-
tions, 5260 helium nuclei and 2622 heavy fragments were observed as Au projec-
tile fragments. The experimental data are analyzed with particular emphasis of
target separation interactions in emulsions and study of criticalexponents.
Multiplicity distributions of the fast-moving projectile fragments are inves-
tigated. Charged fragment moments, conditional moments as well as two and three
-body asymmetries of the fast moving projectile particles are determined in
terms of the total charge remaining bound in the multiply charged projectile
fragments. Some differences in the average yields of helium nuclei and heavier
fragments are observed, which may be attributed to a target effect. However,
two and three-body asymmetries and conditional moments indicate that the
breakup mechanism of the projectile seems to be independent of target mass. We
looked for evidence of critical point observable in finite nuclei by study the
resulting charged fragments distributions. We have obtained the values for the
critical exponents gamma, beta and tau and compare our results with those at
lower energy experiment (1.0A GeV data). The values suggest that a phase
transition like behavior, is observed.Comment: latex, revtex, 28 pages, 12 figures, 3tables, submitted to Europysics
Journal
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