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This article presents the information on the valorization of waste generated during the production of tissue paper. The possibility of bioconversion of the polysaccharide part of paper sludge into simple sugars has been evaluated. The options for processing the paper sludge before enzymic hydrolysis to achieve the maximum yield of monosaccharides have been considered. Pretreatment with acids has been found to be a key step before the biocatalytic cleavage of waste polysaccharides. An additional yield of enzymic hydrolysis products after pretreatment with acids has been obtained by pre-extraction of the paper sludge with spirit or acetone. It has been established that the most intense enzymic hydrolysis of readily available fractions of the paper sludge takes place in the first 10–12 hours. Further, the process slows down, probably due to the action of the remaining components of the fillers, as well as an increase in the proportion of the difficult-to-hydrolyze polysaccharide part. In all cases, the proportion of absolutely dry non-hydrolyzed residue has been about 43±2 % of the dry matter of the paper sludge. The main products of enzymic hydrolysis have been glucose and xylose. The resulting sugars have been used for mixotrophic cultivation of the Tetradesmus obliquus and Chlorella vulgaris algae. Yeast strains have been selected for the conversion of monosaccharides from the paper sludge. In a series of experiments on non-sterile yeast cultivation, the Candida utilis PAL D and Debaryomyces hansenii SWING R cultures have turned out to be the most productive (within 2.10±0.14 g of air-dry yeast weight/dm3 per 24 hours). The degree of conversion of hydrolysate sugars has been 70±2 %. Most of the remaining sugars (about 80 %) have been represented by xylose. Complete utilization of the sugars has taken place on the 2nd day when having added an extra nitrogen source to the medium. On the other hand, the spent nutrient medium after yeast separation has been suitable for mixotrophic cultivation of microalgae. It has been revealed that the economic costs of pre-treatment of the paper sludge with nitric acid can be leveled by using the resulting salts as a nitrogen source for cultivating yeast. In doing so, the yield of yeast biomass increases by almost 2 times.

The article introduces attraction marketing methods employed by Russian monthly popular science magazine Diletant. The authors compared the printed version and the website. The paper magazine attracts the reader mainly by the topic name printed on its cover as a unique creolized text. The further semantics of the front media text includes various aspects of the main topic. Color highlights both topical issue and regular features. The comparative analysis with the online version revealed some significant differences. The website has a muted color scheme and minimal animation; it contains neither video nor audio materials. Like in the printed version, the function of attraction belongs mainly to illustrations and subtitles. Online Diletant is interactive in navigation, tests, and surveys, which are, however, the only form of interactivity: the site does not provide comments, forums, “likes”, etc. Such limited use of attention-seeking tools makes the digital version of Diletant uncompetitive and inferior to its paper issue.

The paper considers the question that has gained relevance in the last decade: whether the cryptocurrency bitcoin is money. The economic literature provides different opinions on this issue. The analysis shows that disagreements arise because of the different understanding of the category of ‘money’ rather than because of the nature of bitcoin. The author analyzes popular interpretations of money in terms of their applicability to the definition of the role and place of cryptocurrencies in the financial system. The purpose of this study is to define money as a financial instrument that linksthe creation of gross social product with its distribution. The author believes that money emerged and exists as a tool that ensures a connection between the contribution of each economic entity to the total product of society and the right to receive an equivalent amount of goods from this gross product. At the same time, the author defines money as an ‘ideal right’ to receive a share of the gross social product. In this regard, the analysis of bitcoin shows that this cryptocurrency allows obtaining goods from the gross social product in many countries, while bitcoin owners do not contribute to the gross social product. Based on this, bitcoin cannot be considered money; it is a money substitute, or surrogate money. At the same time, bitcoin was created as money and performs the functions of money, but to a limited extent. Bitcoin can only perform the functions of money as a supplement to an existing official currency. It is not capable of functioning as the only currency in a society. The interpretation proposed in this paper can be used for the purposes of developing the Russian law on cryptocurrencies is currently being worked on by the Government and the Central Bank of Russia.

This paper examines the Talyshi people, an Iranian ethnic group divided by the Araxes River between Azerbaijan and Iran. The division, a result of the Russo-Persian War (1804-1813), placed the Talyshis within two distinct political and cultural paradigms. The northern Talyshis, under the successive rule of the Russian Empire, the Soviet Union and Azerbaijan, were confronted with a Turkish political and cultural orientation that contrasted with their Iranian linguistic and cultural heritage. This orientation led to significant shifts in identity, with the Talyshis becoming minorities within a Turkic-speaking, Turkish-oriented Azerbaijan. Southern Talyshis who remained in Iran experienced a more consistent cultural development within the Iranian paradigm, despite political changes. This study examines the impact of these divisions on Talyshi identity, language preservation and socio-cultural adaptation. It discusses the challenges of assimilation and cultural preservation faced by the Talyshis, their linguistic characteristics, and the revival of Talysh self-awareness and nationalism in the face of external pressures. The paper uses a comprehensive analysis of historical, linguistic and ethnographic data to provide insights into the resilience of Talysh identity amidst political and cultural change.

This paper examines the practice of female genital mutilation (FGM) among the Dawoodi Bohra community in Pakistan. FGM, a non-therapeutic alteration of the female genitalia, is examined through the lenses of religion, culture and health. The Dawoodi Bohra, predominantly based in Karachi, practice FGM as a religious and cultural rite, linking it to notions of purity and social acceptance. Despite global efforts to outlaw and eradicate FGM, it persists, underpinned by deeply held beliefs and the insular nature of the community. The physical and psychological effects of FGM are profound, leading to immediate and long-term complications such as severe pain, infection and psychological trauma. This paper discusses the impact of these practices on women’s health and rights, while critiquing the lack of an effective legal framework in Pakistan to combat FGM. In addressing this issue, the paper contributes to the broader discourse on gender-based violence and the rights of women and children in patriarchal societies.

Modern energy systems are often used as a medium for information transmission, including confidential information, which makes relevant the task of ensuring its security, which today is solved using not only cryptographic but also steganographic means that ensure concealment of the very fact of confidential information transmission. The steganographic method with code control of the additional information embedding possesses practical important qualities, but in its original form requires the presence of a container for successful information extraction, which is not always desirable in practice, while the known modification of this steganographic method allows blind decoding is characterized by an insufficient level of resistance to attacks against the embedded message. The purpose of this paper is to improve the efficiency of the steganographic method with code control of the additional information embedding and blind decoding. This purpose was achieved by identifying two factors that determine the occurrence of errors during blind decoding of additional information in the steganographic method with code control: variation of sub-blocks, and errors caused by attacks against the embedded message. We pro-pose the theoretical and practical rationale for codewords that provide the best level of re-sistance to both factors. The most significant result of the paper is a reduction in the number of decoding errors of the steganographic method with code control of the additional information embedding and blind decoding by 12.01% compared to the result known in the literature through a reasonable choice of codewords used to embed the additional information.

This article expands upon the author's previous work regarding the Vostok Oil project, initially discussed in the Gubkin University journal. It focuses on the establishment and development of the Zvezda Shipyard project, arguing its critical role in the potential development of the Vostok Oil and Gas province. The paper posits that without the Zvezda Shipyard, it would not be feasible to exploit the Vostok Oil and Gas province or significantly enhance the transportation and logistics capabilities of the Northern Sea Route (NSR). The development of Zvezda's new production facilities is presented as essential for the advancement of the Russian Arctic, facilitating a pivotal eastward shift in the Russian economy. The significance of the Zvezda project and the strategic decisions leading up to it are discussed in detail, demonstrating how they integrate the development of the NSR, the exploitation of Vostok Oil fields, and the establishment of investment and technological foundations for Russia's long-term strategy. This strategy addresses both socio-economic goals and defense and security challenges. Additionally, the paper provides quantitative analyses of the multiplicative effects generated by the Zvezda Shipyard project's realization.

Personalization is one of the keyways to improve the performance of conversational agents. It improves the quality of user interaction with a conversational agent and increases user satisfaction by increasing the consistency and specificity of responses. The dialogue with the agent becomes more consistent, the inconsistency of responses is reduced, and the responses become more specific and interesting. Training and testing personalized conversational agents requires specific datasets containing facts about a persona and texts of persona’s dialogues where replicas use those facts. There are several datasets in English and Chinese containing an average of five facts about a persona where the dialogues are composed by crowdsourcing users who repeatedly imitate different personas. This paper proposes a methodology for collecting an original dataset containing an extended set of facts about a persona and natural dialogues between personas. The new RuPersonaChat dataset is based on three different recording scenarios: an interview, a short conversation, and a long conversation. This is the first dataset for dialogue agent personalization collected which includes both natural dialogues and extended persona’s descriptions. Additionally, in the dataset, the persona’s replicas are annotated with the facts about the persona from which they are generated. The methodology for collecting an original corpus of test data proposed in this paper allows for testing language models for various tasks within the framework of personalized dialogue agent development. The collected dataset includes 139 dialogues and 2608 replicas. This dataset was used to test answer and question generation models and the best results were obtained using the Gpt3-large model (perplexity is equal to 15.7). The dataset can be used to test the personalized dialogue agents’ ability to talk about themselves to the interlocutor, to communicate with the interlocutor utilizing phatic speech and taking into account the extended context when communicating with the user.

The paper describes possibilities of increasing the energy efficiency and reducing the takeoff weight of unmanned medium-heavy vertical takeoff and landing aerial vehicles of the airplane type. The authors propose a new hybrid type of unmanned aerial vehicle with a hybrid propulsion system, its aerodynamic design, method of realization of vertical takeoff/landing and cruising mode of flight which make it possible to reduce the takeoff weight of the aircraft, the weight of the basic propulsion system and the mass growth factor in comparison with the existing unmanned aerial vehicle of similar class, made according to the previously known technical solutions. The authors propose a methodology for optimizing the parameters of the configuration of the unmanned aerial vehicle considering the peculiarities of the implementation of vertical takeoff. The paper presents calculations of characteristics of vertical takeoff and landing unmanned aerial vehicles of existing types and the new hybrid type. The authors give quantitative estimates of improving unmanned aerial vehicle characteristics due to the new proposed technical solutions.