Onsager phase factor of quantum oscillations in the organic metal theta-(BEDT-TTF)4CoBr4(C6H4Cl2)

De Haas-van Alphen oscillations are studied for Fermi surfaces illustrating the Pippard's model, commonly observed in multiband organic metals. Field- and temperature-dependent amplitude of the various Fourier components, linked to frequency combinations arising from magnetic breakdown between different bands, are considered. Emphasis is put on the Onsager phase factor of these components. It is demonstrated that, in addition to the usual Maslov index, field-dependent phase factors must be considered to precisely account for the data at high magnetic field. We present compelling evidence of the existence of such contributions for the organic metal theta-(BEDT-TTF)4CoBr4(C6H4Cl2)

Development of the assessment means for final certification qualifying practice of bachelors of professional education

Development of the assessment means for final certification qualifying practice of bachelors of professional education is analyzed in this article. Examples of innovative assessment forms and methods of the cognitive component of competence, formed as a result of practice, are given in this articleВ статье рассмотрена разработка оценочных средств для проведения промежуточной аттестации квалификационной практики бакалавров профессионального обучения. Приведены примеры инновационных методов и форм оценки когнитивной составляющей компетенций, формируемых в результате прохождения практик

Organization of the qualifying practice of bachelors of professional education with the requirements of the educational standards third-generation

The article describes the features of organization of the qualifying practice of bachelors of professional education with the requirements of educational standards thirdgeneration, in particular the requirements for certification of students on the results of practiceВ статье рассмотрены особенности организации квалификационной практики бакалавров профессионального обучения с учетом требований образовательных стандартов третьего поколения, в частности, требования, предъявляемые к аттестации студентов по результатам прохождения практик

13^{13}C NMR observation of a nonmagnetic charge-ordered state in the organic conductor κ\kappa-(ET)2_{2}Hg(SCN)2_{2}Cl

We investigated the local magnetism of the organic conductor, $\kappa$-(ET)$_{2}$Hg(SCN)$_{2}$Cl, with a quasi-triangular lattice of weakly dimerized molecules through $^{13}$C NMR spectroscopy. The NMR spectra and nuclear relaxation show that charge disproportionation occurs, associated with the metal-insulator transition at 31 K. The relaxation rate indicates that the paramagnetic spins in the insulating phase undergo a transition into a spin-singlet ground state with the emergence of orphan spins, a possible valence-bond-glass state. The present results are in high contrast to the spin-cluster paramagnetism of the electric dipole-liquid candidate, $\kappa$--(ET)$_{2}$Hg(SCN)$_{2}$Br, having nearly identical material parameters. This fact indicates that these two systems are on the verge between distinct phases in both charge and spin degrees of freedom; a spin-singlet charge-ordered state versus a spin-active Mott insulating state, competing with each other on a triangular lattice of dimerized sites

Этнокультурная компетентность в структуре профессионально значимых качеств специалиста социальной сферы.

В статье рассматриваются актуальные проблемы развития этнокультурной компетентности и раскрывается ее место в структуре профессионально значимых качеств специалиста социальной сферы. = The article examines actual problems of ethnocultural competence’s development and shows its place in the structure of professionally important qualities of a specialist in social area