70 research outputs found

    Kinetic equations for ultrarelativistic particles in a Robertson-Walker Universe and isotropization of relict radiation by gravitational interactions

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    Kinetic equations for ultrarelativistic particles with due account of gravitational interactions with massive particles in the Robertson-Walker universe are obtained. On the basis of an exact solution of the kinetic equations thus obtained, a conclusion is made as to the high degree of the uniformity of the relict radiation on scales with are less than 10β€²10'.Comment: 19 pages, 2 figures, 13 reference

    ΠžΠ¦Π•ΠΠšΠ И Π’Π«Π‘ΠžΠ  ЀОРМ Π“ΠžΠ‘Π£Π”ΠΠ Π‘Π’Π’Π•ΠΠΠžΠ“Πž Π Π•Π“Π£Π›Π˜Π ΠžΠ’ΠΠΠ˜Π― Π˜ΠΠ’Π•ΠΠ‘Π˜Π€Π˜ΠšΠΠ¦Π˜Π˜ Π­ΠšΠžΠΠžΠœΠ˜Π§Π•Π‘ΠšΠžΠ“Πž РОБВА

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    Relevance. Today, every state considers the problem of economic growth is the key, and in modern conditions of globalization and integration processes, the occurrence of crisis situations, increasing the likelihood of risks, limited natural resources, growing global competition, this problem is of fundamental importance. These tendencies also bring to the fore the necessity of choosing the most optimal forms of state regulation, ensuring the rational combination of market mechanisms and administrative interference in the economy.Purpose. Development of theoretical provisions and identification of the main directions of the evolution of the state regulations forms of intensification of economic growth on the basis of a comprehensive assessment of their impact on the economy.Methods. As a methodological basis of research were used methods of systematization, structuring of information, correlation and regression analysis, a system approach.Results. The article shows that state regulation of economy in market conditions is a necessary system of standard measures of legislative, executive and supervisory nature performed by the competent state bodies and public organizations in order to stabilize and adapt the existing socio-economic system to changing conditions. On the basis of systematization and generalization of theoretical and practical aspects of state regulation in Russia and in foreign countries we identified trends and patterns of state regulation of the intensification of regional economic growth, assessed their impact using the author’s method of regression analysis that allowed to identify the priority forms of state regulation. The approach proposed in the article for identification of the relationship between the resultant indicators of state regulation and the factor indicators that affected the results. It allows us to determine primary tools of macro-regulation.Conclusions. Our research demonstrates the need to implement various forms of state regulation in existing conditions of growing crisis trends, globalization, and geopolitical tensions. The preferable direction of state regulation is the intensification of economic growth β€” the fundamental factor of economic security and global competitiveness.ΠΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½ΠΎΡΡ‚ΡŒ. БСгодня ΠΊΠ°ΠΆΠ΄ΠΎΠ΅ государство считаСт ΠΏΡ€ΠΎΠ±Π»Π΅ΠΌΡƒ экономичСского роста ΠΊΠ»ΡŽΡ‡Π΅Π²ΠΎΠΉ, ΠΏΡ€ΠΈΡ‡Π΅ΠΌ Π² соврСмСнных условиях Π³Π»ΠΎΠ±Π°Π»ΠΈΠ·Π°Ρ†ΠΈΠΈ ΠΈ ΠΈΠ½Ρ‚Π΅Π³Ρ€Π°Ρ†ΠΈΠΎΠ½Π½Ρ‹Ρ… процСссов, нарастания кризисных ситуаций, ΠΏΠΎΠ²Ρ‹ΡˆΠ΅Π½ΠΈΡ вСроятности рисков, ограничСнности ΠΏΡ€ΠΈΡ€ΠΎΠ΄Π½Ρ‹Ρ… рСсурсов, усилСния глобальной ΠΊΠΎΠ½ΠΊΡƒΡ€Π΅Π½Ρ†ΠΈΠΈ данная ΠΏΡ€ΠΎΠ±Π»Π΅ΠΌΠ° ΠΏΡ€ΠΈΠΎΠ±Ρ€Π΅Ρ‚Π°Π΅Ρ‚ ΠΎΡΠ½ΠΎΠ²ΠΎΠΏΠΎΠ»Π°Π³Π°ΡŽΡ‰Π΅Π΅ Π·Π½Π°Ρ‡Π΅Π½ΠΈΠ΅. Π£ΠΊΠ°Π·Π°Π½Π½Ρ‹Π΅ Ρ‚Π΅Π½Π΄Π΅Π½Ρ†ΠΈΠΈ Ρ‚Π°ΠΊΠΆΠ΅ выводят Π½Π° ΠΏΠ΅Ρ€Π²Ρ‹ΠΉ ΠΏΠ»Π°Π½ Π½Π΅ΠΎΠ±Ρ…ΠΎΠ΄ΠΈΠΌΠΎΡΡ‚ΡŒ Π²Ρ‹Π±ΠΎΡ€Π° Π½Π°ΠΈΠ±ΠΎΠ»Π΅Π΅ ΠΎΠΏΡ‚ΠΈΠΌΠ°Π»ΡŒΠ½Ρ‹Ρ… Ρ„ΠΎΡ€ΠΌ государствСнного рСгулирования, ΠΎΠ±Π΅ΡΠΏΠ΅Ρ‡ΠΈΠ²Π°ΡŽΡ‰ΠΈΡ… Ρ€Π°Ρ†ΠΈΠΎΠ½Π°Π»ΡŒΠ½ΠΎΠ΅ сочСтаниС Ρ€Ρ‹Π½ΠΎΡ‡Π½Ρ‹Ρ… ΠΌΠ΅Ρ…Π°Π½ΠΈΠ·ΠΌΠΎΠ² ΠΈ административного Π²ΠΌΠ΅ΡˆΠ°Ρ‚Π΅Π»ΡŒΡΡ‚Π²Π° Π² экономику.ЦСль. Π Π°Π·Π²ΠΈΡ‚ΠΈΠ΅ тСорСтичСских ΠΏΠΎΠ»ΠΎΠΆΠ΅Π½ΠΈΠΉ ΠΈ выявлСниС основных Π½Π°ΠΏΡ€Π°Π²Π»Π΅Π½ΠΈΠΉ Ρ„ΠΎΡ€ΠΌ государствСнного рСгулирования интСнсификации экономичСского роста Π½Π° основС комплСксной ΠΎΡ†Π΅Π½ΠΊΠΈ ΠΈΡ… воздСйствия Π½Π° экономику.ΠœΠ΅Ρ‚ΠΎΠ΄Ρ‹. Π’ качСствС мСтодологичСской основы исслСдования использовались ΠΌΠ΅Ρ‚ΠΎΠ΄Ρ‹ систСматизации, структуризации ΠΈΠ½Ρ„ΠΎΡ€ΠΌΠ°Ρ†ΠΈΠΈ, коррСляционно-рСгрСссионный Π°Π½Π°Π»ΠΈΠ·, систСмный ΠΏΠΎΠ΄Ρ…ΠΎΠ΄.Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹. Π’ ΡΡ‚Π°Ρ‚ΡŒΠ΅ ΠΏΠΎΠΊΠ°Π·Π°Π½ΠΎ, Ρ‡Ρ‚ΠΎ государствСнноС Ρ€Π΅Π³ΡƒΠ»ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ экономики Π² условиях Ρ€Ρ‹Π½ΠΊΠ° прСдставляСт собой Π½Π΅ΠΎΠ±Ρ…ΠΎΠ΄ΠΈΠΌΡƒΡŽ систСму стандартных ΠΌΠ΅Ρ€ Π·Π°ΠΊΠΎΠ½ΠΎΠ΄Π°Ρ‚Π΅Π»ΡŒΠ½ΠΎΠ³ΠΎ, ΠΈΡΠΏΠΎΠ»Π½ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΠ³ΠΎ ΠΈ Π½Π°Π΄Π·ΠΎΡ€Π½ΠΎΠ³ΠΎ Ρ…Π°Ρ€Π°ΠΊΡ‚Π΅Ρ€Π°, ΠΏΡ€ΠΎΠ²ΠΎΠ΄ΠΈΠΌΡ‹Ρ… ΠΊΠΎΠΌΠΏΠ΅Ρ‚Π΅Π½Ρ‚Π½Ρ‹ΠΌΠΈ государствСнными ΠΎΡ€Π³Π°Π½Π°ΠΌΠΈ ΠΈ общСствСнными организациями Π² цСлях стабилизации ΠΈ Π°Π΄Π°ΠΏΡ‚Π°Ρ†ΠΈΠΈ ΡΡƒΡ‰Π΅ΡΡ‚Π²ΡƒΡŽΡ‰Π΅ΠΉ ΡΠΎΡ†ΠΈΠ°Π»ΡŒΠ½ΠΎ-экономичСской систСмы ΠΊ измСнСнию условий. На основании систСматизации ΠΈ обобщСния тСорСтичСских ΠΈ практичСских аспСктов государствСнного рСгулирования Π² России ΠΈ Π·Π°Ρ€ΡƒΠ±Π΅ΠΆΠ½Ρ‹Ρ… странах выявлСны Ρ‚Π΅Π½Π΄Π΅Π½Ρ†ΠΈΠΈ ΠΈ закономСрности государствСнного рСгулирования интСнсификации экономичСского роста Ρ€Π΅Π³ΠΈΠΎΠ½ΠΎΠ², ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½Π° ΠΎΡ†Π΅Π½ΠΊΠ° стСпСни ΠΈΡ… влияния с использованиСм авторского ΠΌΠ΅Ρ‚ΠΎΠ΄Π° рСгрСссионного Π°Π½Π°Π»ΠΈΠ·Π°, Ρ‡Ρ‚ΠΎ ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΠ»ΠΎ Π²Ρ‹Π΄Π΅Π»ΠΈΡ‚ΡŒ ΠΏΡ€ΠΈΠΎΡ€ΠΈΡ‚Π΅Ρ‚Π½Ρ‹Π΅ Ρ„ΠΎΡ€ΠΌΡ‹ государствСнного рСгулирования. ΠŸΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½Π½Ρ‹ΠΉ Π² ΡΡ‚Π°Ρ‚ΡŒΠ΅ ΠΏΠΎΠ΄Ρ…ΠΎΠ΄ ΠΊ Π²Ρ‹ΡΠ²Π»Π΅Π½ΠΈΡŽ взаимосвязи ΠΌΠ΅ΠΆΠ΄Ρƒ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ΠΈΠ²Π½Ρ‹ΠΌΠΈ ΠΏΡ€ΠΈΠ·Π½Π°ΠΊΠ°ΠΌΠΈ государствСнного рСгулирования ΠΈ Ρ„Π°ΠΊΡ‚ΠΎΡ€Π½Ρ‹ΠΌΠΈ показатСлями, Π²Π»ΠΈΡΡŽΡ‰ΠΈΠΌΠΈ Π½Π° Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹, позволяСт ΠΎΠΏΡ€Π΅Π΄Π΅Π»ΠΈΡ‚ΡŒ Π½Π°ΠΈΠ±ΠΎΠ»Π΅Π΅ ΠΏΡ€ΠΈΠΎΡ€ΠΈΡ‚Π΅Ρ‚Π½Ρ‹Π΅ инструмСнты макрорСгулирования.Π’Ρ‹Π²ΠΎΠ΄Ρ‹. ΠŸΡ€ΠΎΠ²Π΅Π΄Π΅Π½Π½ΠΎΠ΅ исслСдованиС дСмонстрируСт Π½Π΅ΠΎΠ±Ρ…ΠΎΠ΄ΠΈΠΌΠΎΡΡ‚ΡŒ Ρ€Π΅Π°Π»ΠΈΠ·Π°Ρ†ΠΈΠΈ Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… Ρ„ΠΎΡ€ΠΌ государствСнного рСгулирования Π² соврСмСнных условиях нарастания кризисных Ρ‚Π΅Π½Π΄Π΅Π½Ρ†ΠΈΠΉ, Π³Π»ΠΎΠ±Π°Π»ΠΈΠ·Π°Ρ†ΠΈΠΈ, гСополитичСской напряТСнности. НаиболСС ΠΏΡ€ΠΈΠΎΡ€ΠΈΡ‚Π΅Ρ‚Π½ΠΎΠ΅ Π½Π°ΠΏΡ€Π°Π²Π»Π΅Π½ΠΈΠ΅ государствСнного рСгулирования β€” интСнсификация экономичСского роста, Π²Ρ‹ΡΡ‚ΡƒΠΏΠ°ΡŽΡ‰Π°Ρ ΠΎΡΠ½ΠΎΠ²ΠΎΠΏΠΎΠ»Π°Π³Π°ΡŽΡ‰ΠΈΠΌ Ρ„Π°ΠΊΡ‚ΠΎΡ€ΠΎΠΌ экономичСской бСзопасности ΠΈ глобальной конкурСнтоспособност

    Charged multifluids in general relativity

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    The exact 1+3 covariant dynamical fluid equations for a multi-component plasma, together with Maxwell's equations are presented in such a way as to make them suitable for a gauge-invariant analysis of linear density and velocity perturbations of the Friedmann-Robertson-Walker model. In the case where the matter is described by a two component plasma where thermal effects are neglected, a mode representing high-frequency plasma oscillations is found in addition to the standard growing and decaying gravitational instability picture. Further applications of these equations are also discussed.Comment: 14 pages (example added), to appear in Class. Quantum Gra

    Effect of X-ray suppression system upon parameters of electrostatic accelerator ion beam

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    Experimental study results are presented for a beam profile and emittance of an electrostatic accelerator β€œSokol” before and after being equipped with magnet X-ray suppression system
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