14. mezinárodní vědecká konference Didaktická konference 2021

Title in English: 14th International Scientific Conference Didactic Conference 2021: Proceedings Didactics of mathematics, natural sciences and vocational education represent developing areas and are a breeding ground for new ideas and approaches. In mathematics and physics, the proceedings provide an overview of the historical development of education process and the possibilities of activating students. From a practical point of view, physics and chemistry are interconnected by using simulations in teaching. Vocational education is represented from various perspectives, whether in technical education, by solving logistical problems, or educational activities in the teaching of economic subjects. Due to the current situation, there are abundant contributions on the effects of the ongoing pandemic on the educational process and distance learning

Visible and Invisible Monuments. Late Eneolithic Burial Mounds in Forested Areas of Central Moravia

The main purpose of this paper is to contribute archaeological data towards the ongoing discussion on the missing evidence of barrows of the late Eneolithic Corded Ware and Bell Beaker period in Central Europe. A variety of problems, such as demographic representation of cemeteries, burial customs and the spatial structure of funerary areas is associated with the missing barrows. The sites, such as Dřevohostice (East Moravia), represent one of the few examples of Eneolithic cemeteries with remaining surface relics of funerary activities. We also stress that the variability of late Eneolithic funerary monuments is, however, commonly reduced by modern ploughing and erosion. Therefore, the evidence from exceptionally preserved barrow cemeteries in Central Moravia is enormously important for the reconstruction of the structure and extent of cemeteries in the ploughed landscape. Such sites represent an exceptional opportunity to investigate the evidence of otherwise missing and highly invisible archaeological data. Furthermore, in some respects, this opportunity may be thought of as the key to answering many of the questions regarding Late Eneolithic funerary archaeology. In this paper we are going to summarize the aims and methodology of recent research into the late Eneolithic Corded Ware and Bell Beaker burial mounds.TUREK Jan, Peška Jaroslav, Matějíčková Andrea. Visible and Invisible Monuments. Late Eneolithic Burial Mounds in Forested Areas of Central Moravia. In: Ancestral Landscape. Burial mounds in the Copper and Bronze Ages (Central and Eastern Europe – Balkans – Adriatic – Aegean, 4th-2nd millennium B.C.) Proceedings of the International Conference held in Udine, May 15th-18th 2008. Lyon : Maison de l'Orient et de la Méditerranée Jean Pouilloux, 2012. pp. 107-117. (Travaux de la Maison de l'Orient et de la Méditerranée. Série recherches archéologiques, 58

Aux sources de l'idée d'union européenne

Dans les années 1463-1464, le roi de Bohême (1458-1471) Georges de Poděbrady et son conseiller français Antoine Marini lancent le projet d'une union des Etats européens, indépendante à la fois de l'Empire et du pape et le présentent aux cours européennes au premier rang desquelles, celle du roi de France Louis XI. Ce projet était dicté par la fragile position du roi utraquiste dont le règne s'appuyait à l'intérieur comme à l'extérieur sur les accords de tolérance envers la religion utraquiste obtenus au concile de Bâle (1436 - compactats) mais non reconnus par le pape. L'analyse détaillée de ce projet révèle une institution très finement définie (cours de justice, monnaie commune, etc.), contraignante pour ses membres et dont l'objet principal était le maintien de la paix. Le recueil présente en outre une analyse des pratiques linguistiques dans la diplomatie de cette fin du Moyen Age et un ouvrage éditant en français les sources relatives à l'ambassade de Georges de Podebrady qui présenta le projet d'union à Louis XI

Design study and production of the ROD inductors for bolts heating

Based on a specific need of ŠKODA ENERGO Ltd., Plzeň, our research programme was focused on the design and manufacturing of water-cooled rod inductors; the appliance should be exploited in a heating procedure of massive ferromagnetic steel bolts. It consists of a copper U-shapped hollow conductor with an inserted ferromagnetic laminated core. Special developed thermal isolations of the copper tube conductor and the ferromagnetic core are based on polyimide and glass materials. Magnetic fields and losses were evaluated by the help of standard Rosemberg method and checked by a 2D numerical calculation. The size and geometry of the ferromagnetic core was calculated to reach the demanded induced losses in the bolt-massive material. The inductor is power supplied from a 4 kHz frequency source. The developed appliance was proved to meet successfully both the demanded induced output and heat resistance of the insulation

Pressure variations of the 5f magnetism in UH3

Pressure variations of the Curie temperature of the 5f ferromagnet beta-UH3 were studied using the Mo-alloyed hydride (UH3)(0.)Mo-82(0).18, which is stable in air and has very similar T-C and magnetization per U atom. By means of ac magnetic susceptibility a linear decrease of T-C was observed for pressures up to 3.2 GPa. The coefficient dT(C)/dp = -2.05 K/GPa gives dlnT(C)/dp = 1/T*dT(C)/dp approximate to -0.011 GPa(-1). This value is smaller than expected for a 5f-band ferromagnet with relatively short U-U distances and suggests that UH3 may be more localized than expected. Among AnX compounds, similar dependence was found e.g. for US. Revisiting existing data on lattice elasticity for beta-UH3, bulk modulus B approximate to 100 GPa can be assumed, leading to dlnT(C)/dlnV = 1.1. Experimental data are confronted with results of GGA + U electronic structure calculations. Plausible values of direct Coulomb U and Hund's exchange J are deduced. The lattice compression was found to reduce predominantly the orbital moments.Web of Science497art. no. 16599