Development of Digital Economy in the Energy Industry-specific Modernization

Digitalization of economy defines the extent of possibility in the use of the single information field that could have defined the possibilities for the forecast of the enterprise's activities. The novelty of the study is in the fact that it implements the aspects of the formation of a single forecasting structure for the consumption of the energy sector's production components within a single energy information system. The paper deals with the digitalization of the energy branch based on the approach to the forecast of possible consumption of products. The practical significance of the study is defined by the fact that there is a possibility of formation of a single component on the modernization of the enterprises if they participate in applying the results of the digitalization of economy in the national production system. The implementation of the approach is illustrated by the example of the Republic of Kazakhstan. Keywords: energy, industry, modeling, forecasting, economy. JEL Classifications: O13, Q47 DOI: https://doi.org/10.32479/ijeep.801

Eastern Vector of Russian State Policy Development for Ensuring Energy Security

This article is dedicated to the current problem of forming the Eastern vector of oil and gas policy within new energy policy and modern circumstances. The main goal of the work is to study the energy relations between Russia and the countries of the Asia-Pacific region, namely China. Using the analysis method, authors have highlighted the threats and possibilities of the influence of the current situation in the fuel and energy complex on Russia's energy security. Analysis of the existing situation on the global energy market has revealed that deepening and expansion of partnerships in economic and energy sphere with China are of interest to Russia as a Eurasian state. The basis for a partnership is a cooperation, based on China's demand for natural resources, while Russia will benefit from using effective innovation models of modernisation. Keywords: Asia-Pacific Region, Energy Sphere, Oil and Gas Policy, Raw Material Resource Potential, Energy Security, Energy Dialogue. JEL Classifications: P48, Q40

The Role of Small and Medium-sized Innovative Enterprises in the Solution of the Import Substitution Task in Oil and Gas-sector Segment of the Russian Fuel and Energy Complex

Russian FEC takes leading positions in the field of oil and gas extraction, it is one of five major complexes in coal mining and power generation. Russia's fuel and energy sector is the largest energy complex in the world. This sector employs more than 2 million people, which produce more than 50 percent of the total GDP of the country. At the same time, small and medium enterprises can play a much more significant role in the development of the Russian economy, especially after the end of the recession and economic restructuring. The government needs to improve approaches in regulation of the sphere of small and medium-sized enterprises to develop their full potential. The authors analyze the measures which should be taken by the Government in order to stimulate the growth of small and medium-sized businesses in Russian fuel and energy complex. Keywords: small innovative enterprises, medium innovative enterprises, international sanctions, import substitution, territorial clusters. JEL Classifications: L53, L95, O31

Prediction of the Supersonic Flow Base Pressure by Axisymmetric ‎Direct Numerical Simulation

Axisymmetric direct numerical simulation (DNS) has been carried out to predict supersonic base flow behavior. Substantially fine grid has been used to perform calculations for the flow with Reynolds number up to 106. Optimal grid resolution was established through test calculations for affordable run time and solution convergence determined by the vorticity value. Numerical scheme provides fourth-order approximation for dissipative, fifth-order for convective and second-order for unsteady terms of conservation equations. Reynolds Averaged Navier-Stokes (RANS) approach has been employed to obtain input flow profiles for DNS calculations. Series of calculations have been carried out for Mach number 1.5 with Reynolds numbers 104, 105, 106 and for Mach number 2.46 with Reynolds number 1.65×106. It has been found that local base pressure coefficient calculated by DNS is a bit overestimated in a zone close to symmetry axis in comparison with experiment while integrated base drag coefficient shows good agreement with experimental data and noticeably better than one obtained by RANS approach

Multidifferential study of identified charged hadron distributions in ZZ-tagged jets in proton-proton collisions at s=\sqrt{s}=13 TeV

Jet fragmentation functions are measured for the first time in proton-proton collisions for charged pions, kaons, and protons within jets recoiling against a $Z$ boson. The charged-hadron distributions are studied longitudinally and transversely to the jet direction for jets with transverse momentum 20 $< p_{\textrm{T}} < 100$ GeV and in the pseudorapidity range $2.5 < \eta < 4$. The data sample was collected with the LHCb experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 1.64 fb$^{-1}$. Triple differential distributions as a function of the hadron longitudinal momentum fraction, hadron transverse momentum, and jet transverse momentum are also measured for the first time. This helps constrain transverse-momentum-dependent fragmentation functions. Differences in the shapes and magnitudes of the measured distributions for the different hadron species provide insights into the hadronization process for jets predominantly initiated by light quarks.Comment: All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-013.html (LHCb public pages

Study of the B−→Λc+Λˉc−K−B^{-} \to \Lambda_{c}^{+} \bar{\Lambda}_{c}^{-} K^{-} decay

The decay $B^{-} \to \Lambda_{c}^{+} \bar{\Lambda}_{c}^{-} K^{-}$ is studied in proton-proton collisions at a center-of-mass energy of $\sqrt{s}=13$ TeV using data corresponding to an integrated luminosity of 5 $\mathrm{fb}^{-1}$ collected by the LHCb experiment. In the $\Lambda_{c}^+ K^{-}$ system, the $\Xi_{c}(2930)^{0}$ state observed at the BaBar and Belle experiments is resolved into two narrower states, $\Xi_{c}(2923)^{0}$ and $\Xi_{c}(2939)^{0}$, whose masses and widths are measured to be $$m(\Xi_{c}(2923)^{0}) = 2924.5 \pm 0.4 \pm 1.1 \,\mathrm{MeV}, \\ m(\Xi_{c}(2939)^{0}) = 2938.5 \pm 0.9 \pm 2.3 \,\mathrm{MeV}, \\ \Gamma(\Xi_{c}(2923)^{0}) = \phantom{000}4.8 \pm 0.9 \pm 1.5 \,\mathrm{MeV},\\ \Gamma(\Xi_{c}(2939)^{0}) = \phantom{00}11.0 \pm 1.9 \pm 7.5 \,\mathrm{MeV},$$ where the first uncertainties are statistical and the second systematic. The results are consistent with a previous LHCb measurement using a prompt $\Lambda_{c}^{+} K^{-}$ sample. Evidence of a new $\Xi_{c}(2880)^{0}$ state is found with a local significance of $3.8\,\sigma$, whose mass and width are measured to be $2881.8 \pm 3.1 \pm 8.5\,\mathrm{MeV}$ and $12.4 \pm 5.3 \pm 5.8 \,\mathrm{MeV}$, respectively. In addition, evidence of a new decay mode $\Xi_{c}(2790)^{0} \to \Lambda_{c}^{+} K^{-}$ is found with a significance of $3.7\,\sigma$. The relative branching fraction of $B^{-} \to \Lambda_{c}^{+} \bar{\Lambda}_{c}^{-} K^{-}$ with respect to the $B^{-} \to D^{+} D^{-} K^{-}$ decay is measured to be $2.36 \pm 0.11 \pm 0.22 \pm 0.25$, where the first uncertainty is statistical, the second systematic and the third originates from the branching fractions of charm hadron decays.Comment: All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-028.html (LHCb public pages