В статье на материале советских и американских кинофильмов периода холодной войны анализируется роль символа детства как ресурса создания образа врага. Актуальность проблемы определяется ...необходимостью исследования, во-первых, причин и форм политизации символа детства, во-вторых, способов конструирования образа врага и механизмов его деконструкции, в-третьих, кинообразов врага периода холодной войны, которые и сегодня являются фактором российско-американских отношений. Способность символа детства вызывать сильнейшую эмоциональную реакцию обусловливает постоянный интерес к нему со стороны акторов символической политики. Символ детства — значимый компонент советско-американской конфронтации, который нашел выражение и в кинематографе СССР и США. Автор показывает, что символ ребенка являлся одним из ресурсов создания кинообраза «врага номер один», помогая реализовать его функции: укрепления позитивной коллективной идентичности, мобилизации, легитимации насилия, легитимации власти, предсказания победы. В отличие от репрезентаций взрослых, даже негативные детские персонажи были представлены в обеих кинематографиях, скорее, как жертвы противоестественной и несправедливой социальной системы «врага номер один». В целом в советских и американских фильмах предписываются одни и те же роли для «своих» детских персонажей, и одни и те же нормы отношения взрослых к детям: как к «своим», так и к «чужим». На материале кинообразов детства можно убедиться, что несмотря на то, что обе сверхдержавы представляли друг друга в качестве антиподов, базовые ценности СССР и США были гораздо ближе друг к другу, чем кажется. Наконец, отношение к детям включалось в попытки своеобразной «регуманизации врага», возвращения противоположной стороне человеческого облика в период разрядки.
Collisions between asymmetric nuclei (Cu–Au) differ significantly in their nuclear overlap geometry from those of symmetric nuclei (Cu–Cu, Au–Au). This results in a number of consequences that allow ...us to obtain more comprehensive and accurate information about the fundamental properties of matter under extreme conditions. The High Energy Proton–Proton Collider Experiment (PHENIX) at the Relativistic Heavy Ion Collider (RHIC) measured the nuclear modification factors of π-mesons in Cu+Au collisions at an energy of 200 GeV. New experimental data from measurements of light hadron flows of different orders (ν
1
, ν
2
) in Cu + Au collisions at an energy of 200 GeV are discussed.
The assessment of the impact of the bacteria Pseudomonas denitrificans, Pseudomonas fluorescens, Bacillus subtilis and yeast Yarrowia lipolytica on commercial poly(ether urethanes) Tecoflex® and ...Tecothane® is presented. The polyurethane samples were incubated with pure cultures of the microorganisms at 30 °C for five months. The changes in the chemical structure of the polymers were evaluated using loss of weight and contact angle measurements, infrared spectroscopy (ATR-FTIR), mass spectrometry (Py-MS), differential scanning calorimetry (DSC) and the thermogravimetric analysis (TG). In addition, scanning electron microscopy (SEM) and atomic force microscopy (AFM) were applied for imaging changes in surface morphology of the poly(ether urethanes). Comparative analysis of these polyurethane features before and after incubation with the microorganism cultures showed that Tecoflex® was less stable than Tecothane®. This can be explained by the presence of aromatic rings within the diphenylmethane diisocyanate group in the chemical structure of the latter. Bacterial strains of Bacillus subtilis and Pseudomonas fluorescens showed a much more prominent destructive effect compared to the strain of yeast Y. lipolytica.
We present azimuthal angular correlations between charged hadrons and energy deposited in calorimeter towers in central d+Au and minimum bias p+p collisions at sNN=200 GeV. The charged hadron is ...measured at midrapidity |eta|<0.35, and the energy is measured at large rapidity (-3.7<eta< -3.1, Au-going direction). An enhanced near-side angular correlation across | Delta eta|>2.75 is observed in d+Au collisions. Using the event plane method applied to the Au-going energy distribution, we extract the anisotropy strength v2 for inclusive charged hadrons at midrapidity up to pT=4.5 GeV/c. We also present the measurement of v2 for identified pi+ or - and (anti)protons in central d+Au collisions, and observe a mass-ordering pattern similar to that seen in heavy-ion collisions. These results are compared with viscous hydrodynamic calculations and measurements from p+Pb at sNN=5.02 TeV. The magnitude of the mass ordering in d+Au is found to be smaller than that in p+Pb collisions, which may indicate smaller radial flow in lower energy d+Au collisions.
Midrapidity production of π±, K±, and (¯p)p measured by the ALICE experiment at the CERN Large Hadron Collider, in Pb-Pb and inelastic pp collisions at √sNN=5.02 TeV, is presented. The invariant ...yields are measured over a wide transverse momentum (pT) range from hundreds of MeV/c up to 20 GeV/c. The results in Pb-Pb collisions are presented as a function of the collision centrality, in the range 0–90%. The comparison of the pT-integrated particle ratios, i.e., proton-to-pion (p/π) and kaon-to-pion (K/π) ratios, with similar measurements in Pb-Pb collisions at √sNN=2.76 TeV show no significant energy dependence. Blast-wave fits of the pT spectra indicate that in the most central collisions radial flow is slightly larger at 5.02 TeV with respect to 2.76 TeV. Particle ratios (p/π, K/π) as a function of pT show pronounced maxima at pT≈3GeV/c in central Pb-Pb collisions. At high pT, particle ratios at 5.02 TeV are similar to those measured in pp collisions at the same energy and in Pb-Pb collisions at √sNN=2.76 TeV. Using the pp reference spectra measured at the same collision energy of 5.02 TeV, the nuclear modification factors for the different particle species are derived. Within uncertainties, the nuclear modification factor is particle species independent for high pT and compatible with measurements at √sNN=2.76 TeV. The results are compared to state-of-the-art model calculations, which are found to describe the observed trends satisfactorily.
Recently, multiparticle-correlation measurements of relativistic p/d/^{3}He+Au, p+Pb, and even p+p collisions show surprising collective signatures. Here, we present beam-energy-scan measurements of ...two-, four-, and six-particle angular correlations in d+Au collisions at sqrts_{NN}=200, 62.4, 39, and 19.6 GeV. We also present measurements of two- and four-particle angular correlations in p+Au collisions at sqrts_{NN}=200 GeV. We find the four-particle cumulant to be real valued for d+Au collisions at all four energies. We also find that the four-particle cumulant in p+Au has the opposite sign as that in d+Au. Further, we find that the six-particle cumulant agrees with the four-particle cumulant in d+Au collisions at 200 GeV, indicating that nonflow effects are subdominant. These observations provide strong evidence that the correlations originate from the initial geometric configuration, which is then translated into the momentum distribution for all particles, commonly referred to as collectivity.
Neutral Mesons and Dielectrons Kryshen, E.; Riabov, V.; Rufanov, I. ...
Physics of particles and nuclei,
07/2021, Letnik:
52, Številka:
4
Journal Article
Recenzirano
We review the performance of the MPD detector at NICA for measurements of neutral mesons, dielectron continuum and light vector mesons. Results of feasibility studies for the reconstruction of these ...observables and estimations of the required statistics are presented and discussed.
The PHENIX experiment at the BNL Relativistic Heavy Ion Collider has measured second- and third-order Fourier coefficients of the azimuthal distributions of direct photons emitted at midrapidity in ...Au + Au collisions at √ sNN = 200 GeV for various collision centralities. Combining two different analysis techniques, results were obtained in the transverse momentum range of 0.4 < pT < 4.0 GeV/c. At lowpT the second-order coefficients, v2, are similar to the ones observed in hadrons. Third-order coefficients, v3, are nonzero and almost independent of centrality. These new results on v2 and v3, combined with previously published results on yields, are compared to model calculations that provide yields and asymmetries in the same framework. Those models are challenged to explain simultaneously the observed large yield and large azimuthal anisotropies.
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