304 research outputs found

    Stimulating income generation for the population in Uzbekistan: an econometric analysis

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    The core issue of national anti-crisis programmes in many countries is to stimulate domestic demand. Anti-crisis programme in Uzbekistan also includes such measures as reducing tax burden, expanding access to credit resources for producers and providing additional government support for small and medium-sized enterprises. These measures are expected to have an impact on income growth in small and mediumsized enterprises as well as in the population, in turn stimulating the expansion of cumulative demand and its positive influence on the dynamics of gross domestic product. This paper outlines channels and mechanisms through which these measures can be carried out, and explores methodological approaches and methods of quantitative estimation used in medium-term forecasting. Based on the results, scenarios are constructed to analyse and compare the rates of disposable-income increases that could potentially result from various combinations of measures and economic policy parameters.population disposable incomes, factors of incom, average salary, econometric analysis and modeling, economic reforms and liberalization, index of economic freedom, sensitivity of disposable incomes, GDP deflator, regression equations, dependent variable, money supply, contribution to growth of disposable incomesm inequality in distribution of income, forecast, alternative assumptions, economic policy measures

    Development of liquid xenon detectors for medical imaging

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    In the present paper, we report on our developments of liquid xenon detectors for medical imaging, positron emission tomography and single photon imaging, in particular. The results of the studies of several photon detectors (photomultiplier tubes and large area avalanche photodiode) suitable for detection of xenon scintillation are also briefly described.Comment: 13 pages, 5 figures, presented on the International Workshop on Techniques and Applications of Xenon Detectors (Xenon01), ICRR, Univ. of Tokyo, Kashiwa, Japan, December 3-4, 2001 (submitted to proceedings

    GEM operation in double-phase xenon

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    http://www.sciencedirect.com/science/article/B6TJM-4T7F5JF-5/2/897502f8049abd8c2dd3dffc3821f0f

    A survey of energy loss calculations for heavy ions between 1 and 100 keV

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    The original Lindhard-Scharff-Schi{\o}tt (LSS) theory and the more recent Tilinin theory for calculating the nuclear and electronic stopping powers of slow heavy ions are compared with predictions from the SRIM code by Ziegler. While little discrepancies are present for the nuclear contribution to the energy loss, large differences are found in the electronic one. When full ion recoil cascade simulations are tested against the elastic neutron scattering data available in the literature, it can be concluded that the LSS theory is the more accurate.Comment: Presented at the 10th International Symposium on Radiation Physics, 17-22 September, 2006, Coimbra, Portugal; style corrections, small change to fig.

    ANTS2 package: simulation and experimental data processing for Anger camera type detectors

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    ANTS2 is a simulation and data processing package developed for position sensitive detectors with Anger camera type readout. The simulation module of ANTS2 is based on ROOT package from CERN, which is used to store the detector geometry and to perform 3D navigation. The module is capable of simulating particle sources, performing particle tracking, generating photons of primary and secondary scintillation, tracing optical photons and generating photosensor signals. The reconstruction module features several position reconstruction methods based on the statistical reconstruction algorithms (including GPU-based implementations), artificial neural networks and k-NN searches. The module can process simulated as well as imported experimental data containing photosensor signals. A custom library for B-spline parameterization of spatial response of photosensors is implemented which can be used to calculate and parameterize the spatial response of a detector. The package includes a graphical user interface with an extensive set of configuration, visualization and analysis tools. ANTS2 is being developed with the focus on the iterative (adaptive) reconstruction of the detector response using flood field irradiation data. The package is implemented in C++ programming language and it is a multiplatform, open source project.Peer Reviewe

    Reflectance of Polytetrafluoroethylene (PTFE) for Xenon Scintillation Light

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    Gaseous and liquid xenon particle detectors are being used in a number of applications including dark matter search and neutrino-less double beta decay experiments. Polytetrafluoroethylene (PTFE) is often used in these detectors both as electrical insulator and as a light reflector to improve the efficiency of detection of scintillation photons. However, xenon emits in the vacuum ultraviolet wavelength region (175 nm) where the reflecting properties of PTFE are not sufficiently known. In this work we report on measurements of PTFE reflectance, including its angular distribution, for the xenon scintillation light. Various samples of PTFE, manufactured by different processes (extruded, expanded, skived and pressed) have been studied. The data were interpreted with a physical model comprising both specular and diffuse reflections. The reflectance obtained for these samples ranges from about 47% to 66% for VUV light. Fluoropolymers, namely ETFE, FEP and PFA were also measured
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