36 research outputs found
Development of the digital chart in Belarus: results and situations in international ratings
В Республике Беларусь процессы цифровизации динамично развиваются. Положительную динамику им придают системные меры государственного регулирования как на уровне главы государства, так и отдельных органов государственного управления. Закономерным итогом совместной работы является стабильно высокие позиции Беларуси в мировых рейтингах. В настоящей статье рассматривается современное состояние и подходы к развитию цифровизации в Беларуси. Анализируются ключевые нормативные правовые акты в этой сфере, а также место Республики Беларусь в основных мировых рейтингах.This article examines the current state and approaches to the development of digitalization in Belarus. The key regulatory legal acts in this area are analyzed, as well as the place of the Republic of Belarus in the main world rankings. In the Republic of Belarus digitalization processes are developing dynamically. Systemic measures of state regulation both at the level of the Head of State and individual government bodies give them a positive dynamic. The natural result of the joint work is the consistently high position of Belarus in the world rankings
Spatial and Energy Distribution of Muons in Gamma-induced Air Showers
The FLUKA Monte Carlo program is used to calculate the effects of
hadroproduction by primary gamma rays incident upon the earth's atmosphere; for
the results presented in this paper, only primary angles at 0 degrees from
zenith are considered. The FLUKA code is believed to be quite accurate in
reproducing experimental photon hadroproduction data in the 1 GeV to 10 TeV
energy range studied. The charged pions which are so produced can decay to
muons with sufficient energy to reach ground level. The number of these muons
and their radial and energy distribution are studied for incident gamma ray
energies from 1 GeV to 10 TeV. The number of these muons is not negligible;
they can, in certain circumstances, be used to study potential sources of gamma
rays like gamma ray bursts. It is found, for example, that a 10 TeV incident
primary gamma ray produces, on average, 3.4 muons which reach ground level; the
gamma ray energy which produces the maximum number of muons at ground level
depends on the spectral index of the primary gamma spectrum, a constant which
describes how the primary gamma flux rises with decreasing primary energy. An
example: for a differential spectral index of 2.7, there is a broad maximum
number of muons coming from ~ 30 GeV primary gamma ray energy.Comment: 10 pages, 5 figures. Updated and expanded version of 26th ICRC vol 2,
127 (1999); HE.3.2.2
Theoretical Study of the Structural, Energetic, and Electronic Properties of 55-Atom Metal Nanoclusters: A DFT Investigation within van der Waals Corrections, Spin–Orbit Coupling, and PBE+<i>U</i> of 42 Metal Systems
An atom-level ab
initio understanding of the structural, energetic,
and electronic properties of nanoclusters with diameter size from
1 to 2 nm figures as a prerequisite to foster their potential technological
applications. However, because of several challenges such as the identification
of ground-state structures by experimental and theoretical techniques,
our understanding is still far from satisfactory, and further studies
are required. We report a systematic ab initio investigation of the
55-atom metal nanoclusters, (<i>M</i><sub>55</sub>), including
alkaline, transitional, and post-transitional metals, that is, a total
of 42 systems. Our calculations are based on all-electron density
functional theory within the Perdew–Burke–Ernzerhof
(PBE) functional combined with van der Waals (vdW) correction, spin–orbit
coupling (SOC) for the valence states. Furthermore, we also investigated
the role of the localization of the d states by using the PBE+<i>U</i> functional. We found a strong preference for the putative
PBE global-minimum configurations for the compact Mackay icosahedron
structure, namely, 16 systems (Na, Mg, K, Sc, Ti, Co, Ni, Cu, Rb,
Y, Ag, Cs, Lu, Hf, Re, Hg), while several systems adopt alternative
compact structures such as 6 polytetrahedron (Ca, Mn, Fe, Sr, Ba,
Tl) and 10 structures derived from crystalline face-centered cubic
and hexagonal close-packed (HCP) fragments (Cr, Nb, Mo, Tc, Ru, Rh,
Pd, Ta, W, Os). However, the 10 remaining systems adopt less compact
structures based on the distorted reduced-core structure (V, Zn, Zr,
Cd, In, Pt, Au), tetrahedral-like (Al, Ga), and one HCP wheel-type
(Ir) structure. The binding energy shows a quasi-parabolic behavior
as a function of the atomic number, and hence the occupation of the
bonding and antibonding states defines the main trends (binding energy,
equilibrium bond lengths, etc.). On average, the binding energy of
the <i>M</i><sub>55</sub> systems represents 79% of the
cohesive energy of the respective bulk systems. The addition of the
vdW correction changes the putative global-minimum configurations
(pGMCs) for selected cases, in particular, for post-transitional metal
systems. As expected, the PBE+<i>U</i> functional increases
the total magnetic moment, which can be explained by the increased
localization of the d states, which also contributed to increase the
number of atoms in the core region (increase coordination) of the
pGMCs. In contrast with the effects induced by the vdW correction
and localization of the d states, the addition of the SOC coupling
cannot change the lowest energy configurations, but it affects the
electronic properties, as expected from previous calculations for
13-atom clusters
Nuclear modification factor for charged pions and protons at forward rapidity in central Au plus Au collisions at 200 GeV
We present spectra of charged pions and protons in 0–10% central Au + Au collisions at View the MathML sourcesNN=200 GeV at mid-rapidity (y=0y=0) and forward pseudorapidity (η=2.2η=2.2) measured with the BRAHMS experiment at RHIC. The spectra are compared to spectra from p+pp+p collisions at the same energy scaled by the number of binary collisions. The resulting nuclear modification factors for central Au + Au collisions at both y=0y=0 and η=2.2η=2.2 exhibit suppression for charged pions but not for (anti-) protons at intermediate pTpT. The View the MathML sourcep¯/π− ratios have been measured up to pT∼3 GeV/cpT∼3 GeV/c at the two rapidities and the results indicate that a significant fraction of the charged hadrons produced at intermediate pTpT range are (anti-) protons at both mid-rapidity and η=2.2η=2.2
Catching up with wonderful women: The women-are-wonderful effect is smaller in more gender egalitarian societies
© 2017 International Union of Psychological Science.Inequalities between men and women are common and well-documented. Objective indexes show that men are better positioned than women in societal hierarchies-there is no single country in the world without a gender gap. In contrast, researchers have found that the women-are-wonderful effect-that women are evaluated more positively than men overall-is also common. Cross-cultural studies on gender equality reveal that the more gender egalitarian the society is, the less prevalent explicit gender stereotypes are. Yet, because self-reported gender stereotypes may differ from implicit attitudes towards each gender, we reanalysed data collected across 44 cultures, and (a) confirmed that societal gender egalitarianism reduces the women-are-wonderful effect when it is measured more implicitly (i.e. rating the personality of men and women presented in images) and (b) documented that the social perception of men benefits more from gender egalitarianism than that of women