Forinjector VEPP-5 klystron gallery control system

VEPP-5 forinjector klystron gallery (KG) is a large electrophysical installation that includes main part of forinjector RF-system supply, synchrosystem, klystron units. This paper presents the control system (CS) of it. CS is based on the "standard" 3-level model [1]. Details of its realization reflects KG functional requirements and experience accumulated in BINP, as well as financial and technical abilities

Muon-Spin Rotation Spectra in the Mixed Phase of High-T_c Superconductors : Thermal Fluctuations and Disorder Effects

We study muon-spin rotation (muSR) spectra in the mixed phase of highly anisotropic layered superconductors, specifically Bi_2+xSr_2-xCaCu_2O_8+delta (BSCCO), by modeling the fluid and solid phases of pancake vortices using liquid-state and density functional methods. The role of thermal fluctuations in causing motional narrowing of muSR lineshapes is quantified in terms of a first-principles theory of the flux-lattice melting transition. The effects of random point pinning are investigated using a replica treatment of liquid state correlations and a replicated density functional theory. Our results indicate that motional narrowing in the pure system, although substantial, cannot account for the remarkably small linewidths obtained experimentally at relatively high fields and low temperatures. We find that satisfactory agreement with the muSR data for BSCCO in this regime can be obtained through the ansatz that this ``phase'' is characterized by frozen short-range positional correlations reflecting the structure of the liquid just above the melting transition. This proposal is consistent with recent suggestions of a ``pinned liquid'' or ``glassy'' state of pancake vortices in the presence of pinning disorder. Our results for the high-temperature liquid phase indicate that measurable linewidths may be obtained in this phase as a consequence of density inhomogeneities induced by the pinning disorder. The results presented here comprise a unified, first-principles theoretical treatment of muSR spectra in highly anisotropic layered superconductors in terms of a controlled set of approximations.Comment: 50 pages Latex file, including 10 postscript figure

Feasibility studies for the measurement of time-like proton electromagnetic form factors from p¯ p→ μ+μ- at P ¯ ANDA at FAIR

This paper reports on Monte Carlo simulation results for future measurements of the moduli of time-like proton electromagnetic form factors, | GE| and | GM| , using the p¯ p→ μ+μ- reaction at P ¯ ANDA (FAIR). The electromagnetic form factors are fundamental quantities parameterizing the electric and magnetic structure of hadrons. This work estimates the statistical and total accuracy with which the form factors can be measured at P ¯ ANDA , using an analysis of simulated data within the PandaRoot software framework. The most crucial background channel is p¯ p→ π+π-, due to the very similar behavior of muons and pions in the detector. The suppression factors are evaluated for this and all other relevant background channels at different values of antiproton beam momentum. The signal/background separation is based on a multivariate analysis, using the Boosted Decision Trees method. An expected background subtraction is included in this study, based on realistic angular distributions of the background contribution. Systematic uncertainties are considered and the relative total uncertainties of the form factor measurements are presented

Современное высшее образование: вызовы и противоречия

The study of modern processes in higher education allowed the authors to identify a number of contradictions in its development. Using theoretical and empirical analysis, the authors identified a key list of challenges that national higher education systems face within domestic and international framework.Исследование современных процессов в области высшего образования позволяет сделать вывод, что существует ряд противоречий в его развитии. На основе научно-эмпирического анализа авторы определили ключевой перечень вызовов, с которым сталкиваются национальные системы высшего образования в аспекте внутригосударственного и международного развития

International university freshmen’s perceptions on culturally diverse community and internal stakeholders’ tactics

The paper explores first-year students’ feelings about international university campus. Increasing globalisation of education raises a number of issues related not only to internationally accepted standards of qualifications and degrees, curriculum development, faculty competences, but also to domestic and international students’ tolerance, community building, etc. The research focuses on the first-year domestic and international students’ attitudes to their own and other cultures, students’ readiness to share their personal psychological environment with еру representatives of other cultures. The study started with literature review and further used surveys for experimental analysis of students’ perceptions on culturally diverse community. Most surveys engage current undergraduate and final year students, with no particular attention to those who have just enrolled. The present paper argues that the novice students’ surveys could contribute to mapping potentially sensitive zones regarding novice students’ engagement into the university multifaceted landscape. Respondents were asked about the reasons to choose the international university for studies, attitude to other cultures, readiness to accommodation with foreigners. The above survey helped to draft preliminary recommendations regarding ways and instruments for the university internal stakeholders to efficiently interact with domestic and international students to foster their social maturity within international university landscape and its multicultural environment. © 2016 Atabekova, Belousov and Yastrebov

International university freshmen’s perceptions on culturally diverse community and internal stakeholders’ tactics

The paper explores first-year students’ feelings about international university campus. Increasing globalisation of education raises a number of issues related not only to internationally accepted standards of qualifications and degrees, curriculum development, faculty competences, but also to domestic and international students’ tolerance, community building, etc. The research focuses on the first-year domestic and international students’ attitudes to their own and other cultures, students’ readiness to share their personal psychological environment with еру representatives of other cultures. The study started with literature review and further used surveys for experimental analysis of students’ perceptions on culturally diverse community. Most surveys engage current undergraduate and final year students, with no particular attention to those who have just enrolled. The present paper argues that the novice students’ surveys could contribute to mapping potentially sensitive zones regarding novice students’ engagement into the university multifaceted landscape. Respondents were asked about the reasons to choose the international university for studies, attitude to other cultures, readiness to accommodation with foreigners. The above survey helped to draft preliminary recommendations regarding ways and instruments for the university internal stakeholders to efficiently interact with domestic and international students to foster their social maturity within international university landscape and its multicultural environment. © 2016 Atabekova, Belousov and Yastrebov