599 research outputs found
Wave packet dynamics in a monolayer graphene
The dynamics of charge particles described by Gaussian wave packet in
monolayer graphene is studied analytically and numerically. We demonstrate that
the shape of wave packet at arbitrary time depends on correlation between the
initial electron amplitudes and on the
sublattices and correspondingly (i.e. pseudospin polarization). For the
transverse pseudospin polarization the motion of the center of wave packet
occurs in the direction perpendicular to the average momentum . Moreover, in this case the initial wave packet splits
into two parts moving with opposite velocities along . If the
initial direction of pseudospin coincides with average momentum the splitting
is absent and the center of wave packet is displaced at along the same
direction. The results of our calculations show that all types of motion
experience {\it zitterbewegung}. Besides, depending on initial polarization the
velocity of the packet center may have the constant component ,
where is the Fermi velocity and is a function of
the parameter ( is the initial width of wave packet). As a result,
the direction of the packet motion is determined not only by the orientation of
the average momentum, but mainly by the phase difference between the up- and
low- components of the wave functions. Similar peculiarities of the dynamics of
2D electron wave packet connected with initial spin polarization should take
place in the semiconductor quantum well under the influence of the Rashba
spin-orbit coupling.Comment: 7 pages, 8 figures, to be published in Phys. Rev.
Wave packet dynamics in hole Luttinger systems
For hole systems with an effective spin 3/2 we analyzed analytically and
numerically the evolution of wave packets with the different initial
polarizations. The dynamics of such systems is determined by the
Luttinger Hamiltonian. We work in the space of arbitrary superposition of
light- and heavy-hole states of the "one-particle system". For 2D packets we
obtained the analytical solution for the components of wave function and
analyzed the space-time dependence of probability densities as well as angular
momentum densities. Depending on the value of the parameter ( is
the average momentum vector and is the packet width) two scenarios of
evolution are realized. For the initial wave packet splits into two
parts and the coordinates of packet center experience the transient
oscillations or {\it Zitterbewegung} (ZB) as for other two-band systems. In the
case when remains
almost cylindrically symmetric and the ripples arise at the circumference of
wave packet. The ZB in this case is absent. We evaluated and visualized for
different values of parameter the space-time dependence of angular momentum
densities, which have the multipole structure. It was shown that the average
momentum components can precess in the absence of external or effective
magnetic fields due to the interference of the light- and heavy hole states.
For localized initial states this precession has a transient character.Comment: 9 pages, 8 gigur
Transformations in socio-economic development of the Gulf group states
The article is devoted to the national economy transformations of the GCC States (Cooperation Council for the Arab States of the Gulf countries). This paper analyzes the dynamics of socio-economic development of the Gulf Group countries for the last 10 years, compares and systematizes the traditional and unique statistical data in order to prove the hypothesis that the positive dynamics was not only due to the high hydrocarbon prices on the global market but also to the successful structural transformation. The growth of the regional economy in the conditions of an almost threefold drop in world oil prices over the past three years is shown. We use systemic approach, comparative and statistical analysis. As the analysis of economic situation and development in the GCC countries at the current stage shows, all of them need to change the structure of the national economy and diversify it in order to reduce the dependence from mining industries, world prices fluctuations. This paper proposes a number of practical considerations and appropriate measures for the formation of more rational structure of the national economies, including the diversification of the sources of budget revenues through expanding industrialization; accelerating development of solid minerals and the creation of new industries using them. As Gulf States belong to the group of emerging countries and the structure of their national economies is similar with the Russian economy, the factors of the positive changes of the national economies will be useful for Russian and foreign researchers
Space-time evolution of Dirac wave packets
In this work we study the dynamics of free 3D relativistic Gaussian wave
packets with different spin polarization. We analyze the connection between the
symmetry of initial state and the dynamical characteristics of moving particle.
The corresponding solutions of Dirac equation having different types of
symmetry were evaluated analytically and numerically and after that the
electron probability densities, as well as, the spin densities were visualized.
The average values of velocity of the packet center and the average spin were
calculated analytically, and the parameters of transient Zitterbewegung in
different directions were obtained. These results can be useful for the
interpretation of future experiments with trapped ions.Comment: 10 pages, 7 figure
Economic and social aspects in the Republic of Tatarstan
The urgency of the problem under study is conditioned by the need to study the state of interethnic and interreligious relations in polyethnic and poly-confessional regions of Russian Federation. The aim of the article is to analyze the situation in the sphere of interethnic and interreligious relations in the Republic of Tatarstan in 2016.
The leading approach to the study of this problem is the poly-paradigm methodology. The article gives the description of interethnic and interconfessional relations in the Republic of Tatarstan in 2014-2016, the comparative data on the largest cities of the republic are given. A particular attention is paid to the analysis of migrant perception peculiarities by the local population.
The materials of the article can be useful for ethnologists, social and cultural anthropologists, political scientists, as well as for the representatives of the bodies and structures responsible for the issues of interethnic interaction.peer-reviewe
ΠΠΏΡΡ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ Π½Π΅ΡΡΠ°Π΄ΠΈΡΠΈΠΎΠ½Π½ΡΡ ΡΠ΄ΠΎΠ±ΡΠ΅Π½ΠΈΠΉ ΠΏΡΠΈ Π²ΡΡΠ°ΡΠΈΠ²Π°Π½ΠΈΠΈ ΡΠ΅ΡΠ½ΡΠ΅Π² ΡΠΎΡΠ½Ρ ΠΎΠ±ΡΠΊΠ½ΠΎΠ²Π΅Π½Π½ΠΎΠΉ (Π inus sylvestris l.) Π½Π° Π£ΡΠ°Π»Π΅)
ΠΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½Π° ΠΈΠ½ΡΠΎΡΠΌΠ°ΡΠΈΡ ΠΎ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΠΈ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ Π½Π΅ΡΡΠ°Π΄ΠΈΡΠΈΠΎΠ½Π½ΡΡ
ΡΠ΄ΠΎΠ±ΡΠ΅Π½ΠΈΠΉ, ΠΊΠΎΡΠΎΡΡΠ΅ ΠΏΡΠΈΠ³ΠΎΡΠΎΠ²Π»Π΅Π½Ρ Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΠΎΡΡ
ΠΎΠ΄ΠΎΠ² ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ². Π Π½Π°ΡΡΠΎΡΡΠ΅Π΅ Π²ΡΠ΅ΠΌΡ ΠΎΠ½ΠΈ ΡΠ²Π»ΡΡΡΡΡ Π΄ΠΎΡΡΡΠΏΠ½ΡΠΌΠΈ, Π½Π΅Π΄ΠΎΡΠΎΠ³ΠΈΠΌΠΈ ΠΈ Π²ΡΡΠΎΠΊΠΎΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΡΠΌΠΈ ΡΡΠ΅Π΄ΡΡΠ²Π°ΠΌΠΈ ΠΏΠΎΠ²ΡΡΠ΅Π½ΠΈΡ ΠΏΠ»ΠΎΠ΄ΠΎΡΠΎΠ΄ΠΈΡ Π»Π΅ΡΠ½ΡΡ
ΠΏΠΎΡΠ². ΠΡΠΎΠ°Π½Π°Π»ΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Ρ ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΡ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΎΠ² ΠΏΠΎΡΠ°Π΄ΠΎΡΠ½ΠΎΠ³ΠΎ ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»Π° ΠΏΡΠΈ Π²Π½Π΅ΡΠ΅Π½ΠΈΠΈ Π΄Π°Π½Π½ΡΡ
ΡΠΌΠ΅ΡΠ΅
PROFESSIONALLY MOTIVATED OPINION IN THE BANKING LAW (Part 2)
The article is devoted to a comprehensive analysis of the concept of professionally motivated opinion applied by regulator (Bank of Russia) in respect of a credit institution. This concept (category) is seen in a variety of ways: as the approach used in international banking practice, as an institution of banking supervision, as assessment assigned by to the Bank of Russian to a credit organization, on the basis of analysis of numerous financial parameters of the latter, the ownership structure, the risks taken and the objective economic factors. The article discusses also the main directions of banking supervision, which includes elements of professionally motivated opinions as well as the goals of the latter.Β Π‘ΡΠ°ΡΡΡ ΠΏΠΎΡΠ²ΡΡΠ΅Π½Π° Π²ΡΠ΅ΡΡΠΎΡΠΎΠ½Π½Π΅ΠΌΡ Π°Π½Π°Π»ΠΈΠ·Ρ ΠΏΠΎΠ½ΡΡΠΈΡ ΠΏΡΠΎΡΠ΅ΡΡΠΈΠΎΠ½Π°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΌΠΎΡΠΈΠ²ΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΡΡΠΆΠ΄Π΅Π½ΠΈΡ, ΠΏΡΠΈΠΌΠ΅Π½ΡΠ΅ΠΌΠΎΠ³ΠΎ ΡΠ΅Π³ΡΠ»ΡΡΠΎΡΠΎΠΌ (ΠΠ°Π½ΠΊΠΎΠΌ Π ΠΎΡΡΠΈΠΈ) Π² ΠΎΡΠ½ΠΎΡΠ΅Π½ΠΈΠΈ ΠΊΡΠ΅Π΄ΠΈΡΠ½ΠΎΠΉ ΠΎΡΠ³Π°Π½ΠΈΠ·Π°ΡΠΈΠΈ. ΠΠ°Π½Π½ΠΎΠ΅ ΠΏΠΎΠ½ΡΡΠΈΠ΅ (ΠΊΠ°ΡΠ΅Π³ΠΎΡΠΈΡ) ΡΠ°ΡΡΠΌΠ°ΡΡΠΈΠ²Π°Π΅ΡΡΡ Π² ΡΠ°Π·Π»ΠΈΡΠ½ΡΡ
Π°ΡΠΏΠ΅ΠΊΡΠ°Ρ
: ΠΊΠ°ΠΊ ΠΏΠΎΠ΄Ρ
ΠΎΠ΄, ΠΈΡΠΏΠΎΠ»ΡΠ·ΡΠ΅ΠΌΡΠΉ Π² ΠΌΠ΅ΠΆΠ΄ΡΠ½Π°ΡΠΎΠ΄Π½ΠΎΠΉ Π±Π°Π½ΠΊΠΎΠ²ΡΠΊΠΎΠΉ ΠΏΡΠ°ΠΊΡΠΈΠΊΠ΅, ΠΊΠ°ΠΊ ΠΈΠ½ΡΡΠΈΡΡΡ Π±Π°Π½ΠΊΠΎΠ²ΡΠΊΠΎΠ³ΠΎ Π½Π°Π΄Π·ΠΎΡΠ°, ΠΊΠ°ΠΊ ΠΎΡΠ΅Π½ΠΊΠ°, ΠΏΡΠΈΡΠ²Π°Π΅ΠΌΠ°Ρ ΠΠ°Π½ΠΊΠΎΠΌ Π ΠΎΡΡΠΈΠΈ ΠΊΡΠ΅Π΄ΠΈΡΠ½ΠΎΠΉ ΠΎΡΠ³Π°Π½ΠΈΠ·Π°ΡΠΈΠΈ Π½Π° ΠΎΡΠ½ΠΎΠ²Π°Π½ΠΈΠΈ Π°Π½Π°Π»ΠΈΠ·Π° ΠΌΠ½ΠΎΠ³ΠΎΡΠΈΡΠ»Π΅Π½Π½ΡΡ
ΡΠΈΠ½Π°Π½ΡΠΎΠ²ΡΡ
ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΎΠ² Π΄Π΅ΡΡΠ΅Π»ΡΠ½ΠΎΡΡΠΈ ΠΏΠΎΡΠ»Π΅Π΄Π½Π΅ΠΉ, ΡΡΡΡΠΊΡΡΡΡ ΡΠΎΠ±ΡΡΠ²Π΅Π½Π½ΠΎΡΡΠΈ, ΠΏΡΠΈΠ½ΠΈΠΌΠ°Π΅ΠΌΡΡ
ΡΠΈΡΠΊΠΎΠ², Π° ΡΠ°ΠΊΠΆΠ΅ ΠΎΠ±ΡΠ΅ΠΊΡΠΈΠ²Π½ΡΡ
ΡΠΊΠΎΠ½ΠΎΠΌΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ°ΠΊΡΠΎΡΠΎΠ². Π ΡΡΠ°ΡΡΠ΅ ΡΠ°ΡΡΠΌΠ°ΡΡΠΈΠ²Π°ΡΡΡΡ ΡΠ°ΠΊΠΆΠ΅ ΠΎΡΠ½ΠΎΠ²Π½ΡΠ΅ Π½Π°ΠΏΡΠ°Π²Π»Π΅Π½ΠΈΡ Π±Π°Π½ΠΊΠΎΠ²ΡΠΊΠΎΠ³ΠΎ Π½Π°Π΄Π·ΠΎΡΠ°, Π² ΠΊΠΎΡΠΎΡΡΡ
ΠΏΡΠΈΡΡΡΡΡΠ²ΡΡΡ ΡΠ»Π΅ΠΌΠ΅Π½ΡΡ ΠΏΡΠΎΡΠ΅ΡΡΠΈΠΎΠ½Π°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΌΠΎΡΠΈΠ²ΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΡΡΠΆΠ΄Π΅Π½ΠΈΡ, Π° ΡΠ°ΠΊΠΆΠ΅ ΡΠ΅Π»ΠΈ Π΅Π³ΠΎ Π²ΡΠ½Π΅ΡΠ΅Π½ΠΈΡ
Tendencies and prospects of tourism industry in Russia : sociological analysis of stereotypes among population during tourism trips
This article deals with the current problem β development of cultural and educational tourism industry. The information for the study was collected from the questionnaires of population of municipal districts of Russia, from the information provided by the Federal Service of State Statistics, and the results of the surveys conducted by the Russian Public Opinion Research Center (VCIOM), etc.
In the course of the study, the authors revealed that the diverge social groups of the Russian society perceive Russian cultural and educational potential, tourism service in the cities in a different way; the tendencies and basic principles of domestic tourism industry have been revealed. In the article the authors defined direct dependence between weak developed domestic infrastructure and stagnation of domestic tourism industry. The results of the study showed the stereotypes which tourists follow while choosing destinations for their trips. These stereotypes may be divided into the following groups: price, comfort, climate. They range in different social groups that lead to the market fluctuation of the domestic tourism industry.peer-reviewe
Ethnic cultural and religious practices of migrant women in the Republic of Tatarstan
The applicability of the research is ridden by necessity of exploring the various aspects of labor migration, which has an exceptional social, political and cultural significance in the modern world. The aim of the study is to analyze the ethnic, cultural and religious practices of migrant women in the Republic of Tatarstan. The analyzed material was obtained with help of methods of mass survey, as well as a biographical and semi-structured interview. As a result, the systematization of the data revealed the features of social communication of migrant women, ranked the structure of the social identity of respondents, analyzed their cultural linguistic competence as well as the degree of actualization of the confessional aspect of identity. The article may be useful to ethnologists, social and cultural anthropologists, political analysts, and representatives of the bodies supervising migration policy and inter-ethnic cooperation
- β¦