1,044 research outputs found
Public and private partnership and business actors in political processes concerning military issues
Purpose: The article researches the actual issues of developing partnership and cooperation between the state and private business in matters of production and modernization the military-industrial complex of Russia. The main object of the research is the Russian NAVY. The subject of the research is the comparison of the Russian and US NAVY modernization in the context of public and private partnership.
Design/Methodology/Approach: The authors used a wide range of methodological tools in the course of the study. The method of economic analysis, the method of structural analysis, the statistical method and the method of mathematical comparison were used.
Findings. Studying the role of business actors in the national rearmament programmes in Russia the authors revealed such key indicators as economic viability and financial efficiency of programme implementation. A comparative analysis of budget and private funding of the similar US programme was conducted and statistical data supporting the main findings of the study were introduced. Practical Implications: The development of cooperation between business and the MIC at the state level should go along the path of creating conditions for public-private partnerships (PPPs) - a set of organizational, legal, financial and economic relations and joint actions of the state and private business aimed at achieving the goals of the state economic policy in order to address socially significant tasks on mutually beneficial conditions. Originality/Value: The authors’ conclusion that state’s financial and economic policy in the field of defense and modernization of the domestic defense industry has all chances to become the locomotive of the country’s industrial, scientific and technological development gives new horizons for discussing the most appropriate rearmament strategy.peer-reviewe
Artificial intelligence for heart rate variability analyzing with arrhythmias
Introduction. Existing standards of Heart Rate Variability (HRV) technology limit its use to sinus rhythm. A small number of extrasystoles is allowed, if the device used has special procedures for the detection and replacement of ectopic complexes. However, it is important to expand the indicated limits of the applicability of the HRV technology. This specially regards the cases when the HRV technology looks promising in the diagnostics, as, for example, in atrial fibrillation and atrial flutter.
Materials and Methods. All ECG measurements were performed on XAI-MEDICA® equipment and software. Processing of the obtained RR Series was carried out using the software Kubios® HRV Standard. All recommended HRV characteristics for Time-Domain, Frequency-Domain and Nonlinear were calculated.
The purpose of the work. The article presents an artificial intelligence (AI) procedure for detecting episodes of arrhythmias
and reconstruction of core patient’s rhythm, and demonstrates the efficacy of its use for the HRV analysis in patients with varying degrees of arrhythmias.
The results of the study. It was shown efficiency of developed artificial intelligence procedure for HRV analyzing of patients with different level of arrhythmias. These were demonstrated for Time-Domain, Frequency-Domain and Nonlinear methods. The direct inclusion into review of Arrhythmia Episodes and the use of the initial RR Series leads to a significant distortion of the results of the HRV analysis for the whole set of methods and for all considered options for arrhythmia.
Conclusion. High efficacy of operation of the procedure AI core rhythm extraction from initial RR Series for patients with arrhythmia was reported in all cases
High-resolution short-wave infared hyperspectral characterization of alteration at the Sadiola Hill gold deposit, Mali, Western Africa
Abstract. Sadiola Hill is an ~8 Moz gold deposit located in western Mali within a ca. 2200–2050 Ma tectonic window known as Kédougou-Kénieba inlier (KKI), exposing the Western African craton. The deposit is hosted in a metasedimentary package made up of impure carbonate rocks, wackes, and arenites intruded by three distinct igneous phases. A N-S-trending Sadiola shear zone, related to the regional Senegalo-Malian shear zone, and NNE-trending third order fault splays acted as conduits for auriferous hydrothermal fluid flow (Hein and Tshibubudze 2007; Cameron 2010; Masurel et al. 2017). This study determined that gold is associated with ferroan dolomite/dolomite+/-ankerite- muscovite to Al-poor muscovite- phlogopite, cogenetic with sulphide precipitation. The intensity of white mica replacement of biotite, and abundance of Fe-bearing carbonates in association with phlogopite, are good predictors of gold mineralization. Within well-mineralized samples phlogopite occurs as gangue silicate that recrystallized after sulphidation reactions took place. Geochemical data agree with the hyperspectral interpretation of ore-stage alteration assemblages, as K/Al molar, Mg/Al molar, and total C enrichment positively correlated with increasing gold grade.
Differences in spectral expression of carbonate alteration in the greywacke, diorite, and impure marble were well-constrained during this study. Syn-mineralization carbonate is dolomite in the impure marble unit and attains ferroan dolomite-ankerite composition in the greywacke and diorite. The differences in the Fe content between the ore-stage carbonates expressed in different rock types can be explained by progressive rock-buffering with the surrounding Fe-rich minerals within the diorite and greywacke. As the impure carbonate unit is Mg-rich, the ore-stage dolomite consistently shows low Fe-content. Furthermore, Fe in biotite was preferentially consumed by sulphidation reactions, leaving no residual iron for the dolomite.
Muscovite and Al-poor muscovite occur in all host rocks and are associated with gold grade in the impure carbonate and the greywacke. Investigation of protolith control revealed that white mica is consistently more aluminous and attains higher crystallinity values in tonalite, while cogenetic white mica within the greywacke is Al-poor illite. These variational differences are attributed to availability of Al³⁺ and lower Mg²⁺ content in the tonalite to produce muscovite. Phengite (Al-OH at ~2225nm) occurs in the system as a minor post-mineral alteration phase. Finally, Illite crystallinity has a common trend of increasing veinward, which was attributed to lower degree of fluid-rock interaction in the vein centre and higher fluid/rock ratio
Self-energy correction to the bound-electron g factor in H-like ions
The one-loop self-energy correction to the 1s electron g factor is evaluated
to all orders in Z\alpha with an accuracy, which is essentially better than
that of previous calculations of this correction. As a result, the uncertainty
of the theoretical prediction for the bound-electron g factor in H-like carbon
is reduced by a factor of 3. This improves the total accuracy of the recent
electron-mass determination [Beier et al. Phys. Rev. Lett. 88, 011603 (2002)].
The new value of the electron mass is found to be m_e = 0.000 548 579 909 3(3)
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The light-by-light contribution to the muon anomalous magnetic moment from the axial-vector mesons exchanges within the nonlocal quark model
The contribution of axial-vector mesons to the muon's anomalous magnetic
moment through a light-by-light process is considered within a nonlocal quark
model. The model is based on a four-quark interaction with scalar--pseudoscalar
and vector--axial-vector sectors. While the transverse component of the
axial-vector corresponds to a spin-1 particle, the unphysical longitudinal
component is mixed with a pseudoscalar meson. The model parameters are
re-fitted to the pion properties in the presence of pi-a_1 mixing. The obtained
estimation for the light-by-light contribution of a_1+f_1 mesons is
(3.6+-1.8)*10^{-11}.Comment: 18 pages, 10 figures, final version accepted for publication in
Physical Review
Muonic hydrogen ground state hyperfine splitting
Corrections of orders alpha^5, alpha^6 are calculated in the hyperfine
splitting of the muonic hydrogen ground state. The nuclear structure effects
are taken into account in the one- and two-loop Feynman amplitudes by means of
the proton electromagnetic form factors. The modification of the hyperfine
splitting part of the Breit potential due to the electron vacuum polarization
is considered. Total numerical value of the 1S state hyperfine splitting
182.638 meV in the (mu p) can play the role of proper estimation for the
corresponding experiment with the accuracy 30 ppm.Comment: 18 pages, Talk presented at the 11th Lomonosov Conference on
Elementary Particle Physics, Moscow State University, August 200
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