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Radiometric dating of zircon grains from crustal xenoliths in kimberlites of the Yakutian diamond province show that most of the Daldyn and Markha terranes were formed in Paleoarchean but preserve some fragments of Eaoachean and possibly even Hadean crust recycled in several tectonothermal events. The oldest zircons were crystallized about 3.2 Ga and recrystallized during later activity stages of 2.9, 2.8-2.7, and 1.9 Ga, whereby they gained radiogenic hafnium produced by ¹⁷⁶Lu decay in the rock. The degrees crust rework and the tectonothermal stages varied across the Anabar tectonic province. The earliest events of 3.2 and 2.9 Ga left record in zircons from kimberlites in the Nakyn field, while the signatures of the 2.7 Ga activity are best pronounced in zircons from kimberlites sampled in the Upper Muna and Nakyn fields. On the other hand, zircons from lower crustal mafic granulite xenoliths in the Daldyn and Alakit-Markha kimberlites lack traces of the earliest crust history and only evidence of the last 1.9 Ga event, which remained mute in xenolith samples from the Upper Muna field. Zircons from felsic granulite and metadiorite xenoliths in the Udachnaya kimberlite, which represent middle and upper crust, show a peak at 2.6 Ga besides that of 1.9 Ga. The synthesized available data support several previous inferences: vertical and lateral heterogeneity of the crust in the Yakutian diamond province; absence of linkage between the crust recycling degree and major collisional zones of the Siberian craton; absence of the separate Markha terrane. Correlation of age peaks corresponding to thermal events in the crust history of the Anabar tectonic province with those of large igneous provinces allows a hypothesis that the revealed tectonothermal events may be related with the activity of superplumes.

The paper presents data on the contents of major and trace elements in garnet xenocrysts from kimberlites of the highly diamondiferous V. Grib pipe (1100 grains) and weakly diamondiferous TsNIGRI-Arkhangelskaya pipe (446 grains). We have established that the high diamond potential of the V. Grib kimberlite pipe is due to several factors related to the composition and structure of the lithospheric mantle represented by kimberlite: (1) a “cold” regime, with a heat flow of 36-38 mW/m²; (2) a thick “diamond window” (70-102 km), with the depth level of the lower boundary of the lithospheric mantle estimated at >200 km; (3) the high degree of preservation of diamond-bearing peridotites under the P-T conditions of diamond stability despite the high degree of impregnation of the lithospheric-mantle rocks by high-temperature silicate melts. The low diamond content of the TsNIGRI-Arkhangelskaya kimberlite pipe as compared with the V. Grib pipe is due to the following factors: (1) a more intense heat flow in the lithospheric mantle, 38-42 mW/m²; (2) a thinner “diamond window”, 10-60 km, with the depth level of the lower boundary of the lithospheric mantle estimated at <200 km; (3) weak impregnation of the rocks of the middle and lower lithospheric mantle by CHO fluid/melt, which might have induced diamond formation; (4) minimum preservation of diamond-bearing peridotites in the lower lithospheric mantle, partly because of the possible impregnation of this zone by high-temperature silicate melts.

A linear theory of static cylindrical bending of a thin plate is constructed without using Kirchhoff's hypotheses. The transverse shear, thickness compression and the resulting longitudinal force are taken into account. Taking into account the change in the areas of both surfaces during bending, the transverse distributed force is determined. It is assumed that the average pressure on the plate is several orders of magnitude greater than the pressure drop. Bending under conditions of plane deformed and stressed states is considered.

An experimental technique has been developed that allows one to visualize the occurrence and spread of damage in each layer of transparent armor. The dynamics of damage development in multilayer packages consisting of four and eight layers with an area of 480´480 mm and 300´300 mm, respectively, have been analyzed. The evolution of damage was obtained under the influence of a 12.7 mm caliber bullet with a two-component core with a total mass of 59.2 g and a 7.62 mm caliber bullet with a two-component core with a total mass of 10.9 g, both normal and at an acute angle in the range of impact speeds 777÷797 m/s. The experimental data are compared with the results of numerical modeling of the interaction of the striker with a multilayer transparent barrier.

A method has been developed for predicting creep and long-term strength based on data on the behavior of a previously tested sample (leader sample, prototype) under ductile fracture conditions. It is assumed that the material, when loaded, does not have instantaneous plastic deformation and the first stage of creep, and the incompressibility hypothesis is satisfied for it. It is shown that if for a leader sample the creep curve at constant stress and the time until its failure are known, then to obtain a diagram of the rheological deformation and long-term strength of the material at other stress values it is enough to know only the initial (at the initial moment of time) minimum creep strain rate of the samples for these voltage values. The adequacy of the developed method was checked with experimental data during tension of samples made of corrosion-resistant steel grade 12X18H10T at a temperature of 850 °С and samples from a titanium alloy at a temperature of 600 °С, as well as during tension and torsion of samples from the D16T alloy at a temperature of 250 °С. It is shown that the prediction results do not depend on the choice of the leader sample from a number of samples tested at different voltages. The possibility of using the developed method in conducting experimental studies of materials under conditions of creep up to their destruction is discussed.

An original numerical framework is developed in the present research work in order to estimate the free field sound radiation from baffled structural panels subjected to nonhomogeneous turbulent boundary layer flow-induced excitation. A sequence of semi-analytical methods is used to estimate the nonhomogeneous turbulent boundary layer wall pressure spectrum, which is decomposed using the Cholesky technique to obtain the random wall pressure in the frequency domain. Structural panels are modeled using the finite element technique, and a coupled finite element-boundary element modeling technique is developed to estimate the sound power level radiated into the free field. Results are obtained for laminated composite structural panels with various fiber orientations.

Introduction. The processes of socialization and identification accompany a society throughout his/her social history, and are associated with the development of certain tools for the inclusion of new individuals in the existing order. One of these tools is the educational space. Studying the role of educational space in the processes of successful socialization and identification seems to be very relevant. Methodology. The theory of symbolic interactionism allows us to consider the features of the processes of socialization and identification from the social interaction point of view, “accepting the role of anotherˮ. The sociology of knowledge theory focuses on the relationship between the individual and the external environment, the role of the influence of external factors on the course of the processes of socialization and identification, allows to trace the connection and dependence between socialization, identification and educational space. Discussion. On the basis of accepting the role of the Other, the author revealed mechanisms of mastering the educational space by the personality and showed that the purposefully built educational space allows the subject to freely enter society through the main systems of social roles, values, norms and rules of behavior, thereby forming a social and personal identity in the process of socialization and identification. Emphasis is placed on the fact that spontaneous socialization, unlike managed socialization, is based not on the age criterion, but on personal preferences, which allows the individual to influence society and change it. Conclusion. The educational space acts as a tool in the processes of socialization and identification. It works through the family, formal educational organizations and institutions. Socialization and identification work as two opposite processes: for the consolidation of society through the system of education and social control, inscribing the individual into the existing order, allowing him to form a sense of security, belonging to “their ownˮ, and, on the contrary, contribute to the awareness of one’s individuality, specialness in relation to others, allowing each member of society to realize their creative needs, to contribute to culture.

Introduction. Modern education does not correspond well to the ideas of what it should be. Education models are now rapidly losing their identity, as new challenges point to the need for its transformation from foundations to goal-setting. Education in the XXI century needs a new identity, what should modern education become? The processes that caused the identity crisis of the modern education system in Russia, which are clearly manifested in the attitude of society and the state to teachers and trainees, are considered and systematized. Six provisions are formulated that allow not only to understand the underlying causes of the crisis, but also to outline the ways to the formation of modern education in Russia and abroad. Methodology. The effectiveness of cognitive tools will increase markedly if the four limitations in the organization of cognition are dispensed with at the expense of competencies in psychophysiology. The ontology of this work is built from K. Popper’s concept of three worlds (physical, mental, knowledge). Knowledge is seen not so much as a reflection of reality as an addition to it. Concepts and categories are distinguished in knowledge; concepts are units that convey meaning and content of an object. Categories and categorial schemes are the tools to organize thinking. Using the method of graphing and the method of working with triads, we have been able to obtain another increase in the effectiveness of cognition through work with titles. It is proposed to define monoaspective and polyaspective approaches for working with titles. Discussion. Common to all specialists is the assertion that radical reforms of education at all levels are needed. In order for change not to worsen once again, but to finally begin to improve education, it is necessary to accept that the following changes have occurred in the development of mankind. With the beginning of the twenty-first century, the dominance of culture is shifting from science and education to technology and engineering. This is manifested in such phenomena as the “interface revolutionˮ, “cyberliteracyˮ. A big change in education may be the shift in emphasis from didactics to upbringing. Conclusion. The future of civilization and culture depends on how education reforms in the world and in Russia will proceed.

Introduction. Poverty, as one of the acute and painful problems, is organically inherent in the human community at all stages of existence. Direct and indirect evidence of its negative manifestation is found in various areas of public life - economic, political, social, spiritual. Poverty is a source of dissatisfaction with people’s lives, the basis of deprivation, threatens the social security of society. The ideological and economic crisis that occurred after the collapse of the USSR, in addition to macro-social in general, entailed microsocial changes that occurred in the composition of the poor. It provoked the emergence of a specific stratum of the socially vulnerable population, the “working poorˮ. For the first time these words were uttered by the Deputy Prime Minister of the Government of the Russian Federation O. Y. Golodets in 2017. She drew attention to the uniqueness of this phenomenon. With this material we are trying to answer the question: who are they, the working poor today and what are their specific characteristics? Methodology. Methodologically, the analysis of the phenomenon of the working poor is carried out within the framework of structural, stratification, comparative and socio-cultural approaches, which make it possible to identify a complex of interdependent equivalent subjective and objective characteristics of the object under study. Discussion. The conducted research made it possible to analyze the studied object and explicate its definition. The working poor are a part of society represented by educated, skilled employed people who, due to the deterioration of the economic situation in the state, have found themselves on the brink of poverty, their income is not enough for satisfying life. The specific characteristics of the studied socio-demographic group are identified and considered: economic, professional, demographic, socio-cultural, emotional and psychological. Conclusion. A retrospective analysis of the phenomenon of poverty allowed us to state the fact that the working poor have existed in the Russian space at all times. During the Soviet period, they made up the bulk of the population. Lexically, this phenomenon was not designated in any way, its soft veiled form was used - poverty. This phenomenon is quite traditional for us, it existed latently, manifesting itself in critical periods for the state. Today, it is included in the realities of modern life in a new way.

Introduction. The problems of new forms of socialization associated with changed living conditions dictated by informatization are considered, where a person needs to clarify his/her social identity in the process of constructing a consistent world around him/her, where he/she him/herself acts as a creator, and social education itself acts as a “bridgeˮ connecting the world of subjective experiences, self-assessments and claims with the world of objective social reality. Methodology. The ratio of social philosophy and pedagogy makes it possible to study new forms of socialization in the space of dominance of information culture as an opportunity for the development of a new vector of the theory of pedagogy. The methodological argumentation contained in the works of a number of domestic researchers forms the theoretical basis of the work. Discussion. The transformation of forms, methods and stages of socialization, increasingly clearly articulated by informatization and digitalization, is being corrected using traditional methods. New forms of socialization have been explored - digital, individual as a necessity at a certain point in time, identical-national as a challenge to globalization and cybersocialization; the correction of existing approaches to the process of socialization is proposed, taking into account the availability of Internet opportunities, in particular, the classification of socialization processes on the basis of youth belonging to different types of communities in the online environment is considered. Conclusion. A harmonious combination of traditional, modern and innovative social factors in the information-conditioned space means an increase in the degree of awareness of society as a whole and each of its members individually, the formation of public consciousness on the basis of a universal scientifically based picture of the world.