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The article provides a comparative assessment of domestic and foreign scientists’ and economists’ works, who studied theoretical approaches to sustainable economic development. Countries are increasingly integrating with each other, labor productivity is higher, but at the same time natural resources are used too intensively, which leads to environmental pollution. In this regard, it is necessary to pay more attention and even be unable to influence the processes aimed at ensuring stable economic growth. In the conditions of world economic relations transformation, economic systems activity sustainability is a key element of development and growth of national economies of states. The introduction and use of theoretical approaches in the process of studying the sustainable development of the economy makes it possible to systematize various properties of economic systems in the process of analyzing its development prospects. The obtained results of the conducted research can be used in theoretical frameworks evaluation aimed at studying the sustainable development of economy.

The meaning of the article is determined by the necessity to introduce into scientific discourse a rare monument of sigillography – a stone carved print. The print was found on the right bank of the Karakengir River, 15 km northeast of the city of Satpayev, Ulytau Region, Republic of Kazakhstan. Currently it is stored in the Karaganda Regional Museum of History and Local Lore. Rectangular symbols which remind of Phag-pa or Mongolian square writing are carved on the front side of this matrix. Consultations were held with orientalists and linguists from Russia and abroad for attribution, linguistic, textual analysis. As a result of these consultations, it turned out that this is not a Mongolian square letter and the inscription on the print is not readable. Probably, the print cutter did not know the Mongolian square writing and reproduced the text on the front panel from memory, making misrepresentation. It is assumed that this print could belong to one of the Kalmyk or Dzhungar high-ranking persons of the 17th–18th centuries. It could have been lost during the Last Great Nomadic Migration – the exodus of the Kalmyks from the Russian Empire to their historical homeland in Dzungaria in 1771. The author expresses hope for the prospect of publication which will make the print item available for further research of the mysterious inscription.

The aim of research is: to investigate the level of the development of creative potential of students – future foreign language teachers, to apply the program of group activity developed by us in order to develop the creativity of respondents, to analyze its effectiveness. The following theoretical methods of the research were used to solve the tasks formulated in the article: a categorical method, structural and functional methods, the methods of the analysis, systematization, modeling, generalization. Also we used experimental methods, such as statement research. For the last one we used such methodology, as: The Methodology «Motivation of the professional activity» by K. Zamfir in the modification of A. Rean, «The Methodology of determining the orientation of the individual» (by V. Smekalo and M. Kucher). Also we used the ranking technique, the main task of which was to identify the most important criteria of pedagogical skills, which, according to respondents, will mostly influence the formation of creative potential. The results of the research. Thus, the analysis of our results has shown that the creative potential of the person is manifested and acquired in the process of such activities, which gives this activity a problem-creative, exploratory nature. Our own experience of creative activity should be the basic element, given of which may be the formation of other elements (knowledge, skills, human attitude to the world, etc.). In this case, the education and upbringing of students from the early beginning will have the aim of the development of their personality, and, consequently, the development of students’ creative potential. The results having been obtained by us allow us to use the psychological mechanisms of the development of creative personal traits (the activity, reflexive mechanisms of the person, the formation of self-estimation, self-regulation) in the process of professional training of students at higher educational institutions. Thus, in the basis of empirical and theoretical (semantic) abstraction and generalization there are mental actions that are controlled by reflexive mechanisms. The learner in the process of his/her activity takes the position of a researcher, a creator, who is capable of reflexive analysis of his/her own actions. In such a way the procedure of reflection is closely related to self-esteem and self-regulation, these processes in the course of learning, according to the theory of group learning, which are also given considerable importance. Conclusions. It was proved, that the developmental nature of group learning largely depends on the means and methods of obtaining theoretical knowledge by individuals. The content of developmental group learning is didactically built on the logic of theoretical thinking (the leading role belongs to the theoretical semantic generalization, deduction, semantic reflection, etc.). The procedural characteristics of the theory of developmental group learning include: – the concept of purposeful educational activity, which differs from those positions that it has the aim at obtaining by the subjects of learning not only knowledge, skills and abilities, but also to achieve a theoretical level of thinking of the individual. These characteristics are: the presence of the learner, internal cognitive motives derived from cognitive needs; the presence of a clear goal of conscious self-change, understanding and acceptance by individuals of all information without the choice of educational tasks; the occupation by the learner of the position of a full-fledged subject of the activity, which is capable of independent implementation of all stages of this activity: goal formulation, activity planning, goal realization and the analysis (the evaluation of the results of the activity); active mastering of theoretical knowledge, skills, ways of carrying out mental actions, purposeful planning and providing actions, mastering of the general principles of the decision of problems and solving creative tasks (the student takes a position of the researcher-creator); the reflexive nature of the analysis of the person’s own actions, the experience of creative reflection, which are the basic elements in the formation and the development of the personal traits; – the problematization of the activity – the problematic explanation by the teacher the educational material, which causes for students a remarkable creative effort to present their own opinions creatively, to formulate conclusions, hypotheses and test them in constructive dialogues with opponents; – the use of the method of educational tasks, which consists of the fact that the solution of the problem is not in finding a certain conclusion, but in finding general methods of actions, the principles of solving similar problems by a whole class.

The book «Plates vs. plumes: a geological controversy» (Fig. 1) is intended for the advanced student who is not satisfied by the presentday interpretation of intraplate volcanism. From systematic descriptions of the geological controversy on the plate and plume hypotheses, it follows that, unlike predictions of the former, those of the latter have not been confirmed by observations. Recent intraplate volcanism is explained adequately by models of lithospheric extension and local convection in the upper mantle.

Ankylosing spondylitis (AS) is a chronic inflammatory rheumatic disease of the spine (spondylitis) and sacroiliac joints (sacroileitis) associated in many cases with inflammatory affection of the peripheral joints (arthritis), entesises (entesitis), eyes (uveitis), intestine (enteritis) and aortic root (aortitis). AS is considered now as a prototype of diseases from the group of seronegative spondyloarthritis. AS is a hereditary disease. Predisposition to AS (90%) is associated with genetic factors the key gene of which is HLA-B27. As pathogenesis of AS is not still verified, three hypotheses are considered basing on HLA-B27 biology.The role of environmental factors involved in AS development (tension in enteses and infection) are discussed.