160 research outputs found

    ДОСЛІДЖЕННЯ РІВНЯ ЯКОСТІ ТРАНСПОРТНИХ ПОСЛУГ НА ПРИМІСЬКИХ АВТОБУСНИХ МАРШРУТАХ

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    The article addresses the problems of the evaluation methodology improvement of the transport service efficiency and quality provided to passengers on suburban bus routes in accordance with the modern management system requirements. The purpose of the study is to provide practical recommendations to motor transport enterprises following which they can improve the level of service provided to suburban bus route passengers, as well as to provide a structured approach that will allow transport organizations to respond objectively and reasonably to requests resulting from new passenger transportation needs. For a comprehensive assessment of quantitative and qualitative transport service indicators, the evaluation method of the transport service efficiency is proposed. This approach makes it possible to reflect the transport service level both through the prism of enterprises` operation efficiency and the quality of transport service provision. The results of the study are of practical importance in the application of such methods in motor transport enterprises` activity providing the necessary information for management in modern business conditions.The article addresses the problems of the evaluation methodology improvement of the transport service efficiency and quality provided to passengers on suburban bus routes in accordance with the modern management system requirements. The purpose of the study is to provide practical recommendations to motor transport enterprises following which they can improve the level of service provided to suburban bus route passengers, as well as to provide a structured approach that will allow transport organizations to respond objectively and reasonably to requests resulting from new passenger transportation needs. For a comprehensive assessment of quantitative and qualitative transport service indicators, the evaluation method of the transport service efficiency is proposed. This approach makes it possible to reflect the transport service level both through the prism of enterprises` operation efficiency and the quality of transport service provision. The results of the study are of practical importance in the application of such methods in motor transport enterprises` activity providing the necessary information for management in modern business conditions

    IMPROVED DIAGNOSTIC AND SURGICAL TREATMENT OF PATIENTS WITH RECTOCELE

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    Purpose: to optimize surgical tactics and improve the results of treatment of rectocele.Materials and methods: clinical group included 87 women suffering rectocele 2-3 degrees. Depending on the surgical treatment, the patients were divided into two groups. In Group 1 (n = 38) in the surgical treatment of transvaginal access comply with levatoroplastic and colporrhaphia. In Group 2 (n = 49) plastic rectocele was carried out from the combined transvaginal and transrectal access and was fixing domes sacrospinal vagina, colporrhaphia, augmented transrectal «time 11» mucopexy to a height of 5 cm above the dentate line.Results: sonoelastometric study of stiffness of the muscles of the perineum, tonometric study of vaginal pressure gradient of rest and stress are important diagnostic criteria of pelvic floor functional insufficiency and severity of rectocele. Surgery in 2 patients was more physiological as, accompanied by fewer recurrences of development, higher quality of life and recommended that patients with 3 degrees of rectocele.Summary: the severity of functional insufficiency of muscles of the perineum is the basis of choosing the tactics of surgical treatment of prolapse

    Science Requirements and Conceptual Design for a Polarized Medium Energy Electron-Ion Collider at Jefferson Lab

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    This report presents a brief summary of the science opportunities and program of a polarized medium energy electron-ion collider at Jefferson Lab and a comprehensive description of the conceptual design of such a collider based on the CEBAF electron accelerator facility.Comment: 160 pages, ~93 figures This work was supported by the U.S. Department of Energy, Office of Nuclear Physics, under Contract No. DE-AC05-06OR23177, DE-AC02-06CH11357, DE-AC05-060R23177, and DESC0005823. The U.S. Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce this manuscript for U.S. Government purpose

    A facility to Search for Hidden Particles (SHiP) at the CERN SPS

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    A new general purpose fixed target facility is proposed at the CERN SPS accelerator which is aimed at exploring the domain of hidden particles and make measurements with tau neutrinos. Hidden particles are predicted by a large number of models beyond the Standard Model. The high intensity of the SPS 400~GeV beam allows probing a wide variety of models containing light long-lived exotic particles with masses below O{\cal O}(10)~GeV/c2^2, including very weakly interacting low-energy SUSY states. The experimental programme of the proposed facility is capable of being extended in the future, e.g. to include direct searches for Dark Matter and Lepton Flavour Violation.Comment: Technical Proposa

    J/Psi Photoproduction in a Dual Model

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    J/Psi photoproduction is studied in the framework of the analytic S-matrix theory. The differential and integrated elastic cross sections for J/Psi photoproduction are calculated from a Dual Amplitude with Mandelstam Analyticity. It is argued that at low energies, the background, which is the low-energy equivalent of the high-energy diffraction replaces the Pomeron exchange. The onset of the high energy Pomeron dominance is estimated from the fits to the data.Comment: 10 pages, 7 figures. Dedicated to Professor Anatoly I. Bugrij on the occasion of his 60-th birthda

    Challenges in QCD matter physics - The Compressed Baryonic Matter experiment at FAIR

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    Substantial experimental and theoretical efforts worldwide are devoted to explore the phase diagram of strongly interacting matter. At LHC and top RHIC energies, QCD matter is studied at very high temperatures and nearly vanishing net-baryon densities. There is evidence that a Quark-Gluon-Plasma (QGP) was created at experiments at RHIC and LHC. The transition from the QGP back to the hadron gas is found to be a smooth cross over. For larger net-baryon densities and lower temperatures, it is expected that the QCD phase diagram exhibits a rich structure, such as a first-order phase transition between hadronic and partonic matter which terminates in a critical point, or exotic phases like quarkyonic matter. The discovery of these landmarks would be a breakthrough in our understanding of the strong interaction and is therefore in the focus of various high-energy heavy-ion research programs. The Compressed Baryonic Matter (CBM) experiment at FAIR will play a unique role in the exploration of the QCD phase diagram in the region of high net-baryon densities, because it is designed to run at unprecedented interaction rates. High-rate operation is the key prerequisite for high-precision measurements of multi-differential observables and of rare diagnostic probes which are sensitive to the dense phase of the nuclear fireball. The goal of the CBM experiment at SIS100 (sqrt(s_NN) = 2.7 - 4.9 GeV) is to discover fundamental properties of QCD matter: the phase structure at large baryon-chemical potentials (mu_B > 500 MeV), effects of chiral symmetry, and the equation-of-state at high density as it is expected to occur in the core of neutron stars. In this article, we review the motivation for and the physics programme of CBM, including activities before the start of data taking in 2022, in the context of the worldwide efforts to explore high-density QCD matter.Comment: 15 pages, 11 figures. Published in European Physical Journal
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