127 research outputs found
Теоретические закономерности и институциональные особенности финансирования искусства
The authors have analyzed organizations of the performing arts sector, one of the classic key benefits in the economy. The empirical research has been based on the economic pattern of “cost disease”. A unique statistical database has been compiled on the basis of the information database of the Federal State Statistics Service and the Ministry of culture of the Russian Federation. The research presents the Baumol’s indices calculations updated in 2001–2015. There have been confirmed such symptoms of Baumol’s cost disease as: labor productivity in cultural organizations lagging behind the average regional rate, super-inflationary growth for ticket prices in theaters, and catch-up wage growth in the theater in relation to the average wage level in the region. The author’s approach to the analysis of the Baumol’s cost disease is a modification of the overall Baumol index as a replacement for the income deficit indicator for the share of expenses covered by budget funds. New results have been obtained for estimating the income deficit and the share of expenditures covered by public funding by using the panel data model and quantile regression. The practical value of this research is the systematization of budgetary and extra-budgetary support for cultural organizations. New institutions of financial support such as the institute of participatory budgeting and the institution of individual budget allocations have been suggested to create favorable environment for the development of cultural organizationsАвторы анализируют функционирование учреждений сферы культуры и искусства, которая является одним из классических примеров опекаемых благ в экономике. Эмпирическое исследование опирается на экономическую закономерность «болезнь цен». Составлена уникальная статистическая база данных на основе информации Росстата и информационной базы данных Министерства культуры РФ. В исследовании обновлены расчеты индексов Баумоля за период 2001–2015 гг. Получено подтверждение наличия таких симптомов «болезни Баумоля», как: отстающая от среднерегионального темпа производительность труда в учреждениях культуры, сверхинфляционный рост цен на билеты в театрах, догоняющий рост заработных плат в театре по отношению к среднему уровню заработных плат в регионе. Авторским подходом к анализу «болезни цен» Баумоля можно считать модификацию общего индекса Баумоля в виде замены показателя дефицита дохода на долю расходов, покрываемых за счет бюджетных средств. Получены новые результаты оценки дефицита дохода и доли расходов, покрываемых за счет государственного финансирования, с использованием модели панельных данных и квантильной регрессии. Практическая ценность данного исследования состоит в систематизации механизмов бюджетной и внебюджетной поддержки учреждений искусств. В качестве основы для создания благоприятной среды развития организаций культуры предложены такие новые институты финансовой поддержки, как институт партисипативного бюджетирования и институт индивидуальных бюджетных назначений
Island model with genetic algorithm for solution of crystal structure from X-ray powder diffraction data
In this paper, we consider the problem of the study of polycrystalline substances: restoration of a substance atomic structure by full-profile analysis of powder diffraction data. This task is specific since it is not necessary to find very good solutions on average, but it is necessary to find the best one at least sometimes. To solve this problem, it is proposed to use an evolutionary algorithm based on the cooperative island model. The article describes the main stages and features of the algorithm and notes the qualitative advantages of this model in comparison with other methods (including evolutionary). The description of innovations proposed and the results of computational experiments are given. Conclusions from the experimental results are given, and further prospects for improving the efficiency of this method were noted
Long-term field and laboratory leaching tests of cemented radioactive wastes
Experiments with real and simulated radioactive cementitious wasteforms were set up to compare the leaching behaviour of cementitious wasteforms containing nuclear power plant operational waste in field and laboratory test conditions. Experiments revealed that the average annual Cs-137 leach rate in deionised water was about thirty-five times greater compared with the measured average value for the 1st year of the field test. Cumulative leached fraction of Cs-137 for 1st year (3.74%) was close to values reported in literature for similar laboratory experiments in deionised water, however more than two orders of magnitude higher than the 1st year leached fraction of Cs-137 in the repository test (0.01%). Therefore, to compare field and laboratory test results, a scaling factor is required in order to account for surface to volume factor difference, multiplied by a temperature factor and a leach rate decrease coefficient related to the ground water composition. (C) 2011 Elsevier B.V. All rights reserved
Peroral Endoscopic Myotomy in Diffuse Thickened Esophageal Wall in an Adolescent
Achalasia is an extremely rare pathology in children. Peroral endoscopic myotomy (POEM) is the gold standard for the surgical treatment of achalasia in adults, but only a limited number of cases of achalasia treatment using POEM in children have been published in the literature. Sometimes, high-resolution manometry signs of achalasia can mimic diffuse esophageal leiomyoma. This case report represents the first known successful performance of POEM on a 15-year-old female with diffuse thickening of the esophagus with signs and symptoms of achalasia and suspicion for Alport syndrome associated with diffuse esophageal leiomyoma
СПЕКТРОСКОПИЧЕСКАЯ ДИАГНОСТИКА ДВУХИМПУЛЬСНОЙ ЛАЗЕРНОАБЛЯЦИОННОЙ ПЛАЗМЫ В ЖИДКОСТИ ДЛЯ ОПТИМИЗАЦИИ ПРОЦЕССА СИНТЕЗА НАНОЧАСТИЦ
The features of plasma formation in double-pulse laser ablation in liquid have been studied to optimize the process of nanoparticles synthesis. On the basis of spectroscopic plasma diagnostics the spatial structure and the time range of laserinduced plasma emission have been revealed and the composition of its component has been determined. Исследуются особенности плазмообразования при двухимпульсной лазерной абляции в жидкости с целью оптимизации процесса синтеза наночастиц. На основе спектроскопической диагностики выяснена пространственная структура и временной диапазон излучения лазерно-индуцированной плазмы, создаваемой под действием сдвоенных лазерных импульсов в жидкости, и определен ее компонентный состав.
Rapid assessment of nonlinear optical propagation effects in dielectrics
Ultrafast laser processing applications need fast approaches to assess the nonlinear propagation of the laser beam in order to predict the optimal range of processing parameters in a wide variety of cases. We develop here a method based on the simple monitoring of the nonlinear beam shaping against numerical prediction. The numerical code solves the nonlinear Schrödinger equation with nonlinear absorption under simplified conditions by employing a state-of-the art computationally efficient approach. By comparing with experimental results we can rapidly estimate the nonlinear refractive index and nonlinear absorption coefficients of the material. The validity of this approach has been tested in a variety of experiments where nonlinearities play a key role, like spatial soliton shaping or fs-laser waveguide writing. The approach provides excellent results for propagated power densities for which free carrier generation effects can be neglected. Above such a threshold, the peculiarities of the nonlinear propagation of elliptical beams enable acquiring an instantaneous picture of the deposition of energy inside the material realistic enough to estimate the effective nonlinear refractive index and nonlinear absorption coefficients that can be used for predicting the spatial distribution of energy deposition inside the material and controlling the beam in the writing process
Finding the Cell Center by a Balance of Dynein and Myosin Pulling and Microtubule Pushing: A Computational Study
By comparing computer modeling predictions with observations, we conclude that strong dynein and weaker myosin-generated forces pull the microtubules inward competing with microtubule plus-ends pushing the microtubule aster outward and that the balance of these forces positions the centrosome at the cell center
Prospects in Analytical Atomic Spectrometry
Tendencies in five main branches of atomic spectrometry (absorption,
emission, mass, fluorescence and ionization spectrometry) are considered. The
first three techniques are the most widespread and universal, with the best
sensitivity attributed to atomic mass spectrometry. In the direct elemental
analysis of solid samples, the leading roles are now conquered by laser-induced
breakdown and laser ablation mass spectrometry, and the related techniques with
transfer of the laser ablation products into inductively-coupled plasma.
Advances in design of diode lasers and optical parametric oscillators promote
developments in fluorescence and ionization spectrometry and also in absorption
techniques where uses of optical cavities for increased effective absorption
pathlength are expected to expand. Prospects for analytical instrumentation are
seen in higher productivity, portability, miniaturization, incorporation of
advanced software, automated sample preparation and transition to the
multifunctional modular architecture. Steady progress and growth in
applications of plasma- and laser-based methods are observed. An interest
towards the absolute (standardless) analysis has revived, particularly in the
emission spectrometry.Comment: Proofread copy with an added full reference list of 279 citations. A
pdf version of the final published review may be requested from Alexander
Bol'shakov <[email protected]
Graphene Quantum Dot Oxidation Governs Noncovalent Biopolymer Adsorption
Graphene quantum dots (GQDs) are an allotrope of carbon with a planar surface amenable to functionalization and nanoscale dimensions that confer photoluminescence. Collectively, these properties render GQDs an advantageous platform for nanobiotechnology applications, including optical biosensing and delivery. Towards this end, noncovalent functionalization offers a route to reversibly modify and preserve the pristine GQD substrate, however, a clear paradigm has yet to be realized. Herein, we demonstrate the feasibility of noncovalent polymer adsorption to GQD surfaces, with a specific focus on single-stranded DNA (ssDNA). We study how GQD oxidation level affects the propensity for polymer adsorption by synthesizing and characterizing four types of GQD substrates ranging ~60-fold in oxidation level, then investigating noncovalent polymer association to these substrates. Adsorption of ssDNA quenches intrinsic GQD fluorescence by 31.5% for low-oxidation GQDs and enables aqueous dispersion of otherwise insoluble no-oxidation GQDs. ssDNA-GQD complexation is confirmed by atomic force microscopy, by inducing ssDNA desorption, and with molecular dynamics simulations. ssDNA is determined to adsorb strongly to no-oxidation GQDs, weakly to low-oxidation GQDs, and not at all for heavily oxidized GQDs. Finally, we reveal the generality of the adsorption platform and assess how the GQD system is tunable by modifying polymer sequence and type.https://www.nature.com/articles/s41598-020-63769-
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