Methodological phenomenon of relaxation and tension in the motor rehabilitation of children

The phenomenon of relaxation and tension in motor rehabilitation is investigated. The study involved 59 preschool children with different movement disorders (including children cerebral palsy). It was analysed 18 publications on the issue. Found that both relaxation and tension can be methodically used to improve the efficiency of motor rehabilitation of children by means of physical education and physical therapy. In general methodological relaxation should always be preceded by tension, but depending on the predominant muscle tone (hypertension or hypotension) requires specific methodological transformation of this approach. In addition, not all of the known technology of the muscles can be successfully applied to work with children of preschool age with spastic forms of cerebral palsy

3d Corrective Space in the Physical Rehabilitation of Children with Musculoskeletal System Disorders

In the article, the capability of the space category is considered as one of the main conditions of the matter's existence. We are referring to the length, width and height in their 3D unity. In order to increase the effectiveness of children's physical rehabilitation from a methodological point of view, we proposed to consider physical space as a conditional four-dimensional substance, including еhe subjective aspect of a specific motoric play situation perception of a child and a rehabilitation teacher. During the physical rehabilitation classes for children with musculoskeletal system disorders, after many years of practice, it was noticed that spatial parameters can be purposefully controlled to improve the correction efficiency of various motoric disorders. The authors propose to consider as a special phenomenon the corrective modelling of the internal hall architecture to solve the necessary pedagogical problems. The authors named this phenomenon corrective 3D space. In the process of empirical studies of this phenomenon, the authors came up with the following options for its use in the physical rehabilitation of the specified children contingent: an artificial decrease of the spatial parameters of the motoric play zone, an artificial increase of the spatial parameters of the motoric play zone, an artificial violation of the harmonious relationships of the spatial parameters of the motoric play zone (length, width and height), and an artificial complication of the spatial parameters of the motoric play zone for physical rehabilitation of the child. It turned out that the above options for purposeful changes in spatial parameters have a positive effect of increasing the effectiveness of the correctional process of physical rehabilitation of children with musculoskeletal system disorders. The usual passive physical space of the hall is transformed into a corrective 3D space that actively influences the rehabilitation process

Importance of tetrahedral coordination for high-valent transition metal oxides: YCrO4_4 as a model system

We have investigated the electronic structure of the high oxidation state material YCrO$_4$ within the framework of the Zaanen-Sawatzky-Allen phase diagram. While Cr$^{4+}$-based compounds like SrCrO$_3$/CaCrO$_3$ and CrO$_2$ can be classified as small-gap or metallic negative-charge-transfer systems, we find using photoelectron spectroscopy that YCrO$_4$ is a robust insulator despite the fact that its Cr ions have an even higher formal valence state of 5+. We reveal using band structure calculations that the tetrahedral coordination of the Cr$^{5+}$ ions in YCrO$_4$ plays a decisive role, namely to diminish the bonding of the Cr $3d$ states with the top of the O $2p$ valence band. This finding not only explains why the charge-transfer energy remains effectively positive and the material stable, but also opens up a new route to create doped carriers with symmetries different from those of other transition-metal ions.Comment: 6 pages, 6 figure

Possibility to realize spin-orbit-induced correlated physics in iridium fluorides

Recent theoretical predictions of "unprecedented proximity" of the electronic ground state of iridium fluorides to the SU(2) symmetric $j_{\mathrm{eff}}=1/2$ limit, relevant for superconductivity in iridates, motivated us to investigate their crystal and electronic structure. To this aim, we performed high-resolution x-ray powder diffraction, Ir L$_3$-edge resonant inelastic x-ray scattering, and quantum chemical calculations on Rb$_2$[IrF$_6$] and other iridium fluorides. Our results are consistent with the Mott insulating scenario predicted by Birol and Haule [Phys. Rev. Lett. 114, 096403 (2015)], but we observe a sizable deviation of the $j_{\mathrm{eff}}=1/2$ state from the SU(2) symmetric limit. Interactions beyond the first coordination shell of iridium are negligible, hence the iridium fluorides do not show any magnetic ordering down to at least 20 K. A larger spin-orbit coupling in iridium fluorides compared to oxides is ascribed to a reduction of the degree of covalency, with consequences on the possibility to realize spin-orbit-induced strongly correlated physics in iridium fluorides

Demand and investment for jewellery at the time of economic crisis

The consumer demand defines strategy and tactics of the organization of jewelry manufacture. The demand and its forecasting for short-term and long-term prospect is one of the major problems of marketing for the various organizations and firms. The demand size is influenced by price and non price factors which should be traced accurately on a constant basis by special departments of firms. My research question is how the demand for jewelry changes at the time of economic crisis. In this work a number of the major factors are identified which influence almost all buyers to get the jewelry. The concept of elasticity of demand has a direct bearing on the pricing policy of the companies. Therefore, considerable attention in this work is given to this economic category. In real life it is very difficult to obtain reliable and stable data on factors of cross elasticity to use it for pricing. The analysis carried out shows that price elasticity of jewels in most cases is low. Demand for luxury goods linearly depends on the personal income. The demand research accepts a special urgency in the conditions of the economic crises aggravating the competitive struggle between suppliers of jewelry. The world economic crisis has brought a rise in prices for gold and falling incomes of the population. It has led...Institute of Economic StudiesInstitut ekonomických studiíFakulta sociálních vědFaculty of Social Science