Space-Time: A mythological geometry

In the article the fundamental graphic models that are used by the cultural consciousness to bring about the abstract spheres of thought are analyzed. The problem of inter-semiotic, i.e. emblematic, interpretation of the categories of space and time is also considered. The models of the cross and pyramid are analyzed from the point of view of their ideological (transcending) function and of the mechanism of emblematizing the abstract notions of time and space. This approach helps understanding the general laws of cultural mentality and the process of emblematizing any meaning for the structuring and fixation purposes

The Influence of Anxiety on Attentional Control in comparison of Music Academy and Aviation Academy students’ samples

The aim of this study was to test the predictions of attentional control theory (ACT) on the sample of aviation and music academy students. Previous findings reported various relationships between anxiety, attention, self-esteem and performance, as well as support of ACT (e.g. see Fales et al, 2008; Derryberry, 2002; Yoshie et al, 2009; Dandeneau & Baldwin, 2009; Wilson, Vine & Wood, 2009 for review). Self-report measures of attention, control, self-esteem and anxiety were used to compare results from sample groups. Consistent with variety of previous findings, anxiety was highly correlated with attention subscales, as well as with negative self-esteem. ANOVA Sheffe and detailed regression analysis demonstrated peculiarities of each group involved. While aviation students reported significant relationships between trait anxiety and attention subscales and negative self-esteem, music students reported significant relationships between same subscales and state anxiety.http://tartu.ester.ee/record=b2647734~S1*es

Recombination kinetics of a dense electron-hole plasma in strontium titanate

We investigated the nanosecond-scale time decay of the blue-green light emitted by nominally pure SrTiO$_3$ following the absorption of an intense picosecond laser pulse generating a high density of electron-hole pairs. Two independent components are identified in the fluorescence signal that show a different dynamics with varying excitation intensity, and which can be respectively modeled as a bimolecular and unimolecolar process. An interpretation of the observed recombination kinetics in terms of interacting electron and hole polarons is proposed

An owl and a mirror: On Bosch’s visual motif’s meaning

Our main goal in this paper is to study one Hieronymus Bosch’s iconographic motif, an owl, considering the iconography, production of meaning and connotations. Pursuant to the comparative analysis of the variants of the formal model we intend to ascertain the meaning of Bosch’s “owl” motif. We supplement its pure visual legend throughout European art history with mythological and symbolic (mainly verbal) legend. Methodologically, we base the vast range of interpretations on the school of history of ideas (Aby Warburg, Ernst Gombrich, Erwin Panofsky, Francis Yates, Carlo Ginzburg) and the Tartu-Moscow school of semiotics of culture and text analysis. The article concludes that the “owl” motif, including in the works of Bosch, conveys the semantic aura of the “blind sight” (“blind foresight”). This ideological concept is in turn included into the archaic concept of mutual communication between the worlds carried out by a mythological observer — shaman, trickster

Numerical analysis of the effects of the bending stiffness of the cable and the mass of structural members on free vibrations of suspension bridges

The article determines natural frequencies of vibration and the corresponding mode shapes of a suspension bridge with the varying bending stiffness of cables and examines variations that occur in these characteristics with respect to parametric changes in the bridge. A single span suspension steel footbridge with flexible cables has been selected as an initial model used for studying the dynamic characteristics of a suspension system. With the help of the finite elements (FE) method, parameter studies of the bridge model are presented in which vibration characteristics are studied as a function of structural and material parameters such as the flexural stiffness of the cable and the mass density of structural components. It has been generally found that the bending stiffness of the main cable contributes to a considerable effect on natural frequencies for this type of the suspension system. A simplified expression of predicting natural bending frequencies of the suspension bridge taking into account the bending stiffness of the cable has been developed for the application as the first step in the design process

Hercoga Jēkaba tirdzniecības līgumi

Atsevišķs novilkums no Tieslietu Ministrijas Vēstneša Nr. 2. 1935.Saturs: 1. Tirdzniecības līgums ar Franciju. a) Līguma noslēgšana un noteikumi. b) Tirdzniecības sakari ar Franciju pēc līguma noslēgšanas. c) 1643. g. tirdzniecības līguma pārjaunojuma mēģinājums. 2. Tirdzniecības līgumi ar Angliju. a) Tirdzniecības sakari ar Kārli Stjuartu un 1657. g.tirdzniecības līgums ar Ol Kromvelu. b) Līgums ar Kārli II par tirdzniecību Gambijā un Tobago salu. 3. Tirdzniecība un līgums ar Spāniju un tirdznieciskie sakari ar Portugāli. a) Tirdzniecības sakari un līgumi ar Spāniju. b) Tirdzniecības sakari ar Portugāli. 4. Dānijas karaļu privilēģijas hercogam Jēkabam. 5. Hercoga Jēkaba tirdzniecības līgumu juridiskā struktūra un nozīme. Pielikumi

Electronic processes in doped ZnO nanopowders

The financial support of research grants ERA.NET RUS_ST20170-051 and SFERA II project “Transnational Access activities” (EU 7th Framework Programme Grant Agreement N312643). This work was partly supported by the Russian Foundation for Basic Research, project no. 18-52-76002.ZnO nanocrystals, undoped and doped with Iridium or Indium were prepared by solar irradiation in Heliotron reactor in PROMES CNRS facilities, France. The comparative analysis of the excitonic spectra of ZnO single crystal and ZnO nanocrystals (NCs) doped with In and Ir was performed. It is shown that the excitonic processes in Ir doped nanocrystals coincide well with electronic processes in undoped NC and single crystal; however, the electronic processes in In-doped nanocrystals are significantly different from those in single crystal. The radioluminescence spectra of ZnO:In was analysed and additional luminescence band at ∼3.18 eV was detected due to In-doping. The luminescence decay time depends on In concentration in nanocrystals and is significantly less in ZnO:In compared with undoped nanocrystals. The fast scintillation of ZnO:In makes this material promising for application.Russian Foundation for Basic Research 18-52-76002; Seventh Framework Programme N312643; Institute of Solid State Physics, University of Latvia as the Center of Excellence has received funding from the European Union’s Horizon 2020 Framework Programme H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under grant agreement No. 739508, project CAMART

Cerebellar Cortex and Cerebellar White Matter Volume in Normal Cognition, Mild Cognitive Impairment, and Dementia

Funding Information: Funding: The article has been developed with financing from the European Social Fund and the state budget within the project no. 8.2.2.0/20/I/004 “Support for involving doctoral students in sci‐ entific research and studies”. Publisher Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland.The cerebellum is commonly viewed as a structure that is primarily responsible for the coordination of voluntary movement, gait, posture, and speech. Recent research has shown evidence that the cerebellum is also responsible for cognition. We analyzed 28 participants divided into three groups (9 with normal cognition, 9 with mild cognitive impairment, and 10 with moderate/severe cognitive impairment) based on the Montreal Cognitive Assessment. We analyzed the cerebellar cortex and white matter volume and assessed differences between groups. Participants with normal cognition had higher average values in total cerebellar volume, cerebellar white matter volume, and cerebellar cortex volume in both hemispheres, but by performing the Kruskal–Wallis test, we did not find these values to be statistically significant.publishersversionPeer reviewe