19 research outputs found
Управление международным маркетингом на малых и средних предприятиях = Zarządzanie marketingiem międzynarodowym na przedsiębiorstwach małych i średnich
No full textRubakhov, Alexander Ivanovich; Cytek, .; Radchuk, Anatoly Petrovich; Klisinski, J.; Golovach, Emma Petrovna; Konodyba-Shimanski, B.; Pavlyuchuk, Yuri Nikolaevich; Martsinkevich, Ts.; Kozinets, Maxim Timofeevich; Volosyuk, S. S. International Marketing Management at Small and Medium EnterprisesВ сборнике публикуются материалы международной научно-практической конференции «Управление международным маркетингом на малых и средних предприятиях», проведенной в рамках Международной школы маркетинга по договору о сотрудничестве между Брестским государственным техническим университетом и Ченстоховским техническим университетом. Рассмотрен широкий круг вопросов маркетинговой деятельности малых и средних предприятий, в том числе в области международных экономических отношений. Сборник предназначен для научных и педагогических работников, аспирантов и студентов, а также руководителей и специалистов предприятий
Luminescence of Eu:Y3Al5O12, Eu:Lu3Al5O12, and Eu:GdAlO3 Nanocrystals Synthesized by Solution Combustion
No full textNanocrystals of rare-earth garnets Y3Al5O12 and Lu3Al5O12 and perovskite GdAlO3 highly doped (10–20 at%) with Eu3+ are synthesized by the solution combustion technique and subsequent annealing in air at 800 and 1300oC. Their structure, morphology, and phase composition are studied. These materials exhibit intense red luminescence under UV excitation. Eu:GdAlO3 luminescence has CIE 1931 color coordinates (0.632, 0.368); dominant wavelength, 599.6 nm; and color purity, &gt;99%. Judd–Ofelt parameters, luminescence branching ratios, and lifetimes of the Eu3+ 5D0 state are determined. The luminescence quantum yield for Eu:GdAlO3 (10 at%) reaches 74% with a lifetime of 1.4 ms for the 5D0 state. The synthesized materials are promising for red ceramic phosphors.</p
Alternative glazing for automotive vehicles: executive summary
No full textThe first approach utilises a thin film of acrylic that is moulded onto the outside of a polycarbonate substrate. It was found that the gate of the injection mould cavity must be of uniform cross section otherwise local shear heating can occur and melt the acrylic film. The injection gate must also be located entirely on one side of the mould cavity otherwise the film is punctured by the molten polycarbonate and free to float within the cavity. Any mixing of the two materials will lead to opaque components due the difference in the refractive indices. The film was found to improve the UV resistance of any component, acting as a protective buffer for the polycarbonate.
A new variety of hardcoat was applied to film-backed samples to impart abrasion resistance and samples were found to outperform commercially available alternatives under recognised laboratory conditions. The film-backed samples also exhibited excellent impact resistance when impacted upon the film-face. However, similar components failed at extremely low energy levels when impacted from the non-film face because flaws in the acrylic film caused cracks to be initiated when the film was placed into tension. The level of adhesion between the film and the polycarbonate has been found to be critical and if the failure mechanism could be guaranteed, then intruder resistant glazing that could be broken from the inside in an emergency becomes a possibility. Such a product would address the identified consumer concern of being trapped in a vehicle.
The second approach utilises simultaneous dual injection moulding (2K), which has previously only been used to manufacture coloured components. A successful feasibility study was undertaken to demonstrate the concept of producing transparent components via such a process. This showed that much greater control is required for transparent applications otherwise the skin and core materials mix and opaque components are produced. The generally accepted academic principles associated with the process have been shown to be too simplistic and cannot be relied upon to guarantee good results. The ratio of viscosities of the skin and core materials appear to be more dominant than previously thought and the relative injection speeds of the two materials has a direct influence upon interfacial mixing and haze generation. It was also found that haze could be avoided if the refractive indices of the skin and core material were matched to within ±0.002, but this is impractical.
A third area of research examined the feasibility of introducing structured glass fibres weaves into transparent components to improve rigidity. The study resulted in the construction of a transparent glass fibre pre-preg that could be moulded onto the outer surface of polycarbonate components. Flexural tests revealed that a single layer of glass fibre increased the flexural modulus of test samples by a factor of 3, whilst transparency and clarity were retained. Two patents have been filed as a direct result of this work
Study of excited Ξ baryons with the P ̄ ANDA detector
No full textThe study of baryon excitation spectra provides insight into the inner structure of baryons. So far, most of the world-wide efforts have been directed towards N∗ and Δ spectroscopy. Nevertheless, the study of the double and triple strange baryon spectrum provides independent information to the N∗ and Δ spectra. The future antiproton experiment P ̄ANDA will provide direct access to final states containing a Ξ ̄ Ξ pair, for which production cross sections up to μb are expected in p ̄p reactions. With a luminosity of L= 10 31 cm- 2 s- 1 in the first phase of the experiment, the expected cross sections correspond to a production rate of ∼106events/day. With a nearly 4 π detector acceptance, P ̄ANDA will thus be a hyperon factory. In this study, reactions of the type p ̄p → Ξ ̄ +Ξ∗ - as well as p ̄p → Ξ ̄ ∗ +Ξ- with various decay modes are investigated. For the exclusive reconstruction of the signal events a full decay tree fit is used, resulting in reconstruction efficiencies between 3 and 5%. This allows high statistics data to be collected within a few weeks of data taking
Study of Excited Baryons with the PANDA Detector
No full textInternational audienceThe study of baryon excitation spectra provides insight into the inner structure of baryons. So far, most of the world-wide efforts have been directed towards and spectroscopy. Nevertheless, the study of the double and triple strange baryon spectrum provides independent information to the and spectra. The future antiproton experiment PANDA will provide direct access to final states containing a pair, for which production cross sections up to b are expected in reactions. With a luminosity of in the first phase of the experiment, the expected cross sections correspond to a production rate of eventsday. With a nearly detector acceptance, PANDA will thus be a hyperon factory. In this study, reactions of the type as well as with various decay modes are investigated. For the exclusive reconstruction of the signal events a full decay tree fit is used, resulting in reconstruction efficiencies between and . This allows high statistics data to be collected within a few weeks of data taking
Feasibility studies for the measurement of time-like proton electromagnetic form factors from p ̄ p→ μ+μ- at P ̄ ANDA at FAIR
No full textThis 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
Measurement of the cross-section asymmetry of deuteron photodisintegration process by linearly polarized photons in the energy range E
No full textThe first measurements of the cross-section asymmetry Σ for the deuteron photodisintegration process at a cm angle of 90° up to 1.6GeV were performed at Yerevan Electron Synchrotron. These results are in reasonable agreement with previous measurements at lower energy. Our data show agreement with the asymptotic meson exchange model predictions in the energy range 0.8–1.6GeV
Feasibility studies for the measurement of time-like proton electromagnetic form factors from at at FAIR
No full textInternational audienceThis paper reports on Monte Carlo simulation results for future measurements of the moduli of time-like proton electromagnetic form factors, and , using the reaction at (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 , using an analysis of simulated data within the PandaRoot software framework. The most crucial background channel is , 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
PANDA Phase One
No full textInternational audienceThe Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany, provides unique possibilities for a new generation of hadron-, nuclear- and atomic physics experiments. The future antiProton ANnihilations at DArmstadt (PANDA or ANDA) experiment at FAIR will offer a broad physics programme, covering different aspects of the strong interaction. Understanding the latter in the non-perturbative regime remains one of the greatest challenges in contemporary physics. The antiproton–nucleon interaction studied with PANDA provides crucial tests in this area. Furthermore, the high-intensity, low-energy domain of PANDA allows for searches for physics beyond the Standard Model, e.g. through high precision symmetry tests. This paper takes into account a staged approach for the detector setup and for the delivered luminosity from the accelerator. The available detector setup at the time of the delivery of the first antiproton beams in the HESR storage ring is referred to as the Phase One setup. The physics programme that is achievable during Phase One is outlined in this paper
