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Paper is devoted to the questions of assessment of socio-economic development of agro-industrial complex in transition to an innovative type of economy.

Content marketing on social media depends on trends in consumer behaviors.
A changing focus and emphasis on audience activities on social media are a key
optimization problem in social media marketing (SMM). A solution to this problem
lies in a field of ongoing empirical studies of posting frequency. In the review of the
literature, authors highlight the role of social media as a promising channel for a
direct interaction of companies/brands with consumers. Based on theoretical
generalizations, authors present a generation sequence of an SMM content strategy.
The article also includes an analysis of posting activities of users from Russia on
well-known social media. A cost-benefit analysis of posting activities rests upon
some factors: socio-demographic characteristics of users, a content format, time
and day of the week parameters, etc. Data come from such sources as aggregated
statistics of social media and selective interviewing. An analysis of activities for
users from Russia has shown that VKontakte is the most popular platform; Instagram
is the second, while Facebook is the third. Odnoklassniki and Twitter are less
preferred. VKontakte users respond best to short posts. On Facebook, entries with
medium-sized texts have got the highest number of responds. On Instagram, long
posts work better. The photo format is a leader in all of the social media. The video
format has a middle position, while a text is the most inefficient type of content.
There is strong differentiation in response time depending on a target audience.
Findings have made it possible to present recommendations for optimization of
content marketing.

The paper considers the main properties of protective coatings applied to the inner surface of pipes and pipe products. The main factors affecting the durability of coatings during the operation of pipelines are indicated, groups of test media and test parameters for the gradation of coatings to different operating conditions are identified. The influence of various aggressive media on pipeline coatings is described, as well as test media and test parameters of protective coatings are considered. The main methods for determining the physical and mechanical characteristics of coatings are given, brief informational and descriptive references for each of them are given. Recommendations are given for testing the protective coatings of the inner surface of pipes for compliance with technical requirements, which, ultimately, will allow the selection of materials most resistant to aggressive field environments.

The basic ideology of modernization of urban space should become a strategy for creation of a territory, providing a comfortable environment and human quality of life. Based on this postulate, a study was conducted to identify the specifics of cooperation with the virtual and real urban communities for the construction of foundations of urban policy, based on awareness of collective identity. The study was conducted on the basis of the methodology that allows the synthesis of Smart City concept and the theory of post-industrial city's development. In this study were identified the discourses about architectonic actors of the urban environment. Results of the study on the basis of real cases in Tomsk showed that today there are real urban communities, but their influence on philosophy and management's practice of space-communicative development of the city are insufficient due to lack of specific mechanisms and sites of interaction with government and business. The article also contains the main strategies of solving the problems in interaction with various Community.