The 'Route from the Varangians to the Greeks': truth or fiction

The 'route from the Varangians to the Greeks' is widely known and often mentioned in research, popular science and educational literature. Much less often is it mentioned that the existence of the trade route is seriously doubted and needs additional evidence. The discussion about the actuality of a 'route from the Varangians to the Greeks' has intensified in the recent decade; it mostly involves historians who draw on chronicles, archive materials and literary sources. Although relevant geographical studies focus on small territories and have a limited scope, only they can give a definitive answer to the question of whether it was possible to sail the rivers of the East European Plain between the Baltic and Black Seas in the 8th-11th centuries AD. Of particular importance are studies on the watersheds marking the principal legs of the route. If the watersheds were traversable, the 'route from the Varangians to the Greeks' was navigable, and the impassability of watersheds would preclude navigation along the route. Methodologically, the study employs methods and approaches used in physiographical field studies, which have not been applied earlier to the watershed sections of the 'route from the Varangians to the Greeks'. The central result of the research is the reconstruction of the hydrological features and hydrographic situation of the watershed between the basins of the Neva (River Lovat) and the Western Dvina (River Usvyacha) during the existence of the 'route from the Varangians to the Greeks'. This reconstruction and the study of the watershed territories, the system of land communication routes and toponymic features of this territory conclusively demonstrate that the 'way from the Varangians to the Greeks', or the Baltic-Black Sea waterway, could actually exist

A study of first-year students’ adaptation difficulties as the basis to promote their personal development in university education

Background. The relevance of the paper is determined by the study of types, structure of adaptive difficulties and their impact on the student’s personal development in the process of professionalization in the university. Objective. To examine the psychological characteristics of difficulties that arise in the process of students’ adaptation to university instruction. Design. The authors divide the difficulty in adaptation into four categories: motivational, communicational, cognitive, and regulatory. For each category, the authors offer pedagogical technologies that promote the personal development of students on the basis of their prevailing difficulties. Results. Motivational difficulties are related to poor cognitive motivation, poor motivation to master a profession. Communication difficulties are attributed by the authors to poor communication skills. Cognitive difficulties are defined by insufficient general learning skills and a poor capacity for reflection and self-esteem. The source of regulatory difficulties is a lack of self-organization skills and poor self-control. Conclusion. Correlation analysis confirmed that there are significant connections between, on the one hand, students’ adaptability to the educational process and to their study group, and on the other, the investigated parameters that show their motivational, communicative, cognitive, and regulatory difficulties. Using cluster analysis of the empirical data, the authors identified four main student subgroups with different graphic profiles reflecting their personal difficulties in adaptation to university education; their psychological characteristics are given. Analysis of these difficulties has allowed the authors to offer an optimal psychological and educational strategy for the interactions of each of the subgroups, to optimize their personal development in the educational process

Collective motion of magnetization in two-dimensional arrays of square elements

Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала.The resonance in a two-dimensional array of square ferromagnetic elements has been experimentally investigated. The magnetization of the elements is shown to be in the vortex state. The resonance peak splitting in the array with increasing density of the elements has been established. The explanation of this phenomenon is proposed and eigenfrequencies of the collective modes are theoretically estimated. Different combinations of polarities and chiralities of the nearest elements in the array are examine

Multidisciplinary Observations across an Eddy Dipole in the Interaction Zone between Subtropical and Subantarctic Waters in the Southwest Atlantic

Seawater properties in two intense rings in the South Atlantic are considered. One ring separated from the Brazil Current and the other from the Malvinas Current. The analysis is based on the CTD casts and SADCP measurements from the onboard velocity profiler. The optical properties, chemical parameters, methane concentration, and biological properties such as primary production, plankton, and fish were also analyzed. Analysis of strong differences between the eddies is supplemented by observations of whales and birds in the region

Multidisciplinary Observations across an Eddy Dipole in the Interaction Zone between Subtropical and Subantarctic Waters in the Southwest Atlantic

Seawater properties in two intense rings in the South Atlantic are considered. One ring separated from the Brazil Current and the other from the Malvinas Current. The analysis is based on the CTD casts and SADCP measurements from the onboard velocity profiler. The optical properties, chemical parameters, methane concentration, and biological properties such as primary production, plankton, and fish were also analyzed. Analysis of strong differences between the eddies is supplemented by observations of whales and birds in the region