Wormholes and Naked Singularities in Brans-Dicke cosmology

We perform analytical and numerical study of static spherically symmetric solutions in the context of Brans-Dicke-like cosmological model by Elizalde et al. with an exponential potential. In this model the phantom regime arises without the appearance of any ghost degree of freedom due to the specific form of coupling. For the certain parameter ranges the model contains a regular solution which we interpret as a wormhole in an otherwise dS Universe. We put several bounds on the parameter values: $\omega<0 ,\,\, \alpha^2/|\omega|<10^{-5},22.7\lesssim\!\phi_0\!\lesssim25\,$. The numerical solution could mimic the Schwarzschild one, so the original model is consistent with astrophysical and cosmological observational data. However differences between our solution and the Schwarzschild one can be quite large, so black hole candidate observations could probably place further limits on the $\phi_0$ value.Comment: 20 pages, 6 figures, typos & errors correcte

Geographical Patterns of Weed Diversity in the Central Urals

The weed flora of arable lands was studied in four areas: the mountainous part of the Central Urals, the eastern macroslope of the Ural Mountains, the western piedmont of the Ural Mountains and the Transural region. These areas matched vegetation types such as middle taiga, southern taiga and northern forest-steppe. The weed flora consisted of 256 species from 41 families and 166 genera. The greatest taxonomical diversity was revealed in the eastern macroslope of the Ural Mountains (208 species); however, in the mountainous part of the Central Urals and the western piedmont of the Ural Mountains, it was as low as 141–143 species. About 40% of weeds occurred in all areas: the group of territory-specific weeds was clearly significant in the Transuralregion (14%). In the forest-steppe zone, the group of alien species approached 50%, while in the taiga zone it reached 40%. Keywords: Central Urals, weed plants, diversity, life-forms, geographical differentiation of diversit

COMMUNIKATIVE COMPETENCE AS THE PLANNED STUDENT LEARNING OUTCOMES

The article presents the scientific and theoretical basis essence of communicative competence and the need to address the problem of identifying the level of formation of communicative competence of students in the process of teaching and training. The basis of the problem is a social-psychological, linguistic competence and approaches in the study of communicative competence.В статье представлено научно-теоретическое обоснование сущности коммуникативной компетентности и необходимости решения проблемы выявления уровня сформированности коммуникативных компетенций студента в процессе его учебнопрофессиональной подготовки. В основу решения проблемы положены социальнопсихологический, лингвистический и компетентностный подходы в исследовании коммуникативной компетентности

SPATIAL DEVELOPMENT OF TERRITORIES: STATUS, TRENDS, INTEGRATED APPROACH TO ASSESSING THE DIFFERENTIATION OF REGIONS (TERRITORIES)

The trends and problems of spatial development of regions of Russia in the context of integration of the domestic economy in the transition period from the planned socialist to the capitalist system of economic relations on the example of Vladimir region have been analysed. A methodology for assessing regional differentiation has been proposed. Aspect novelty of the estimation methodology consists in a unified comparative analysis of empirical integrated indicators obtained by calculating partial values of criterion-factors by means of converging integer series using methods of limit equations in combination with the method of Lyapunov's functions in comparison with threshold values of the corresponding integrated indicators. At the same time integrated indicators meet the requirements: quantitative measurement; formation on the basis of priority basic indicators of regional development; accounting for the main components of development: institutional, environmental, economic and social.The proposed methodology is characterized by simplicity of calculation, low cost application, as well as the fact that the information base is made up of official data of state statistics bodies, which ensures their accessibility and comparability

CHARACTERISTICS OF SELF-ORGANIZATION ACADEMIC ACTIVITY OF STUDENTS OF THE COLLEGE

В статье рассматривается проблема изучения роли психологических характеристик в самоорганизации учебной деятельности студентов колледжа. Автор определяет теоретико-методологические аспекты, эффективные формы и методы изучения самоорганизации учебной деятельности студентов колледжаThe problem of the level of development self-organization of College students. The author describes the theoretical and methodological aspects of effective forms and methods of studying the self-organization of educational activity of students of the Colleg

THE GAME AS AN IMPORTANT PART OF PATRIOTIC EDUCATION

В статье рассматривается военно-спортивная игра «Зарница» как важная часть патриотического воспитания на примере городского округа ПервоуральскThe article deals with the military-sports game «Zarnitsa» as an important part of Patriotic education on the example of the city district Pervourals

Distribution of Alien Plant Species of the Middle Volga Region (South-East of the European Part of Russia): a Dataset

Background The dataset presented in the current study contains information regarding alien vascularplant species found in the Middle Volga Region (South-East of the European part ofRussia). The dataset overall includes 413 species belonging to 247 genera and 67families. The described dataset is based on the data published during floristic studies from1851 to 2019. The dataset does not include alien vascular plant species that havepresently disappeared from the territory of the region. It contains a total of 7,782 records ofoccurrences, extracted from the Salix system of information and analytics, developed in theInstitute of Ecology of the Volga River Basin of the Russian Academy of Sciences.New informationA total of 7,782 records were published on the occurrence of alien vascular plants in theMiddle Volga Region. Each entry includes information regarding the place of occurrence ofthe alien plant species, the year of occurrence, the person who recorded the alien plantand who identified it, status of the species (introduced or invasive), link to the herbarium,which contains the specimen and the literary source. If it were impossible to establish thenames of the persons who collected the samples and (or) their identification in theidentifiedBy and recordedBy fields, the names of the authors of the publication given in theassociatedReferences field were entered. The presented dataset supplements theinformation on the distribution of alien plant species in the whole European part of Russiaand specifies the places of their findings in the Middle Volga Region © Senator S et al. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.Funding: This work was supported by the Competitiveness of the Ural Federal University (Russian Federation Government Regulation no. 211, contract no. 02. A03.21.0006)

Distance Pedagogical Education in the Conditions of the Coronavirus

The relevance of the study is due to the problem of finding optimal solutions for organizing training sessions, the need to form the personality of a teacher in a difficult social and pedagogical situation. The leading research method is a pedagogical experiment on the organization of distance learning for students, the method of theoretical substantiation of the formation of the "Digital Educational Ecosystem" project, the method of practical implementation of the digital environment in work with educational organizations and schoolchildren. This article presents practical solutions for organizing training sessions, pedagogical practices, conducting state final certification through the use of interactive educational platforms, social networks, and instant messengers. An equally significant result of the study is the educational component of the formation of a future teacher in a difficult social situation