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The paper aims to substantiate optimization directions of resettable fuses parameters to protect solar arrays from overcurrent.

The method of modeling the electrophysical characteristics of resettable fuses is used.

Resettable fuses currently produced are of little use for protecting photovoltaic cells (PVC) in solar arrays from overcurrent. The volume fraction of the conductive filler should be about 0.15, near the percolation threshold. Thus, reducing the resistance by increasing the amount of filler is not possible. The matrix of the composite should consist of a material with a significant proportion of the crystalline phase to ensure a sharp increase in the composite's volume near the melting point. Using a polymer with a lower melting point instead of polyethylene can reduce the power required to switch a resettable fuses.

The possibility of using resettable fuses based on polymer composite materials with a positive temperature coefficient of resistance to protect photovoltaic solar cells from current overloads is considered. Modeling of the electrophysical characteristics of modern industrial fuses of this type based on polyethylene-nanocarbon composites has been carried out. The limits of their applicability for the protection of photovoltaic solar cells are analyzed. On the basis of the obtained results, the optimization directions of the resettable fuses parameters for use in the protection circuits of PVC of solar array are determined.

The purpose of this paper is to study ways, which regional administrations affect place branding effectiveness.

The study was conducted based on qualitative analysis. In total, 10 place branding cases of federal subjects of Russia were considered to estimate short-, mid- and long-term effects of place brands and quality of regional administrations’ place branding process management. The information on these cases was taken and systematized from three groups of sources, namely, official information from regional administrations (including regulatory acts); scientific publications focused on the brands of selected regions; data from federal and regional news agencies.

It is revealed that the quality of place branding processes is positively related to the presence and power of place branding effects, while the branding budget has no observable impact on place branding. The areas of attention for regional administrations intending to develop the place brand are defined.

The limitation of this study is that the chosen approach is based on secondary data on brand-management practices that are publicly available. This information is mostly fragmentary and may not provide a complete view of place branding practices.

This paper provides a view on place branding success factors from the standpoint of the quality of branding process, rather than quality of the brand itself. The role of regional administrations in this process is studied, thus proposing a basis for integrating place branding in a public administration field.

Economic ideas are the product of contemplation, but also of our economic lives. In the history of ideas, Gérard Debreu’s shining book of 1959, Theory of Value, represents the pinnacle of purity in contemplating economic life. Rather than contextualizing this oeuvre through his intellectual life, as is usually done, this essay describes his axiomatic analysis by contextualizing it through his economic life. What do we learn about Debreu’s axioms on consumption when thinking of his own consumption? What do we learn about his theory of value when thinking of his own values? Historiographically, this approach permits the use of a widely neglected source in the history of economics: anecdotes. Epistemologically, blending axioms and anecdotes offers a description of how axioms regulate an economic discourse. Finally, this essay offers a language for the material dimensions of economic life that are so underexposed in Debreu’s own work.

Just as the August 1998 financial crisis overturned the predictions of a Russian boom, the quick post‐crisis recovery of the Russian economy came as a surprise too. It has almost become a commonplace that ‘nothing is as strong or as weak in Russia as it seems’ and the need to understand how the Russian economy really works is still of urgent priority.

Gorbachev′s book Perestroika is used to explain why the author believes the new policy of restructuring of the Soviet economy cannot and will not work. The policies of Perestroika are introduced and evaluated and the existing socio‐economic system presented. At the end of this sceptical Western analysis, it is concluded that the policy is cosmetic restructuring and Gorbachev′s downfall, like Khruschev′s, is assured.

The paper is devoted to the phenomenon of stress corrosion cracking (SCC), which is an urgent problem for major operator companies that use large-diameter gas transport systems built in the second half of the last century. The aim of the study is to predict the operability of gas pipelines with SCC and ensure their safe operation.

The methodology of the article mainly consisted of strength calculations, mathematical and analytical approaches.

The paper describes practical methods of assessing the residual service life and operability of pipes with SCC defects as part of gas pipelines, the developed approaches to assessing the point of failure of pipes, provides recommendations for developing requirements to ILI smart tools in order to detect cracks and the methods of pipe repair depending on the SCC defect parameters.

The originality of the study consists in the analytical description of the point of destruction of gas pipelines with SCC, assessment of their performance, as well as the definition of modern requirements for the accuracy of in-line inspection to ensure the detection of potentially dangerous SCC defects.