The article presents the results of studies of modern economic theory. The views of the Nobel laureates are interpreted: D. MacFadden on the development of microeconomics, T. Schelling on economic conclusions from game theory, E. Prescott in the field of cycle theory, R. Thaler in the field of behavioral economics. The intention was expressed to turn the master's seminar into a platform for the study of the global economic thought of our time.

The article analyzes approaches to the teaching of econometric subjects of economists. The article describes the teaching experience gained at the faculty of Economics of Moscow state University. Recommendations on the choice of topics and the sequence of their presentation in the framework of the basic course of econometrics; methodology of their presentation; the choice of activities for students to help them master econometrics (both within the basic course and beyond) are formulated.

The article presents the results of empirical investigation devoted to assessing the degree of impact of real exchange rate on economic growth and the dynamics of total factor productivity for various groups of countries, including the CIS countries, countries exporting raw materials, developing countries targeting inflation, in the period 1990-2017 years, using the system generalized method of moments.

The article deals with the features of the development and formation of the digital economy as a new era and the conditions for the functioning of modern companies. The digital economy is a new way and functioning mode of the market which competition has become even more toughened, and methods have become more diverse and high-tech. The authors substantiate the need to form a strategy for the development of companies taking into account new digital concepts and tools. The authors proposed the concept and structure of media space, highlighted the elements of macro-and mesosphere of the company. Also, a study was conducted to identify the basic requirements that consumers impose when choosing a company for further interaction in the search media space. Before ordering products (services, works), future customers carefully study information about the company on the Internet, analyze web-site, read reviews, blogs that affect the decision to buy. The results can be used in the formation of the concept of development of the company's strategy, both in the field of material production and in the field of services and the provision of various works.

The article describes the evolution of approaches to the concept of food security and its components in the world. Highlighted that the development is non-linear and the emphasis in the attention of the world community and political decision-makers to aspects of food security depends largely on the economic situation. In the 20th century, food security issues moved from the national to the global level, with subsequent involvement at the household, individual and nutritional levels. Noticed that the world tendency to synthesize and combine the problems of food security and nutrition security still does not find proper reflection in Russian scientific papers, legal documents and methods of food security assessment, indicating the possible direction of their improvement.