307 research outputs found

    Protest Activity of Modern Youth in the Context of Institutionalization of Digital Policy

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    Introduction. The article is devoted to identifying and interpreting the reasons and forms of protest activity of representatives of the youth cohort in the context of the institutionalization of modern digital society and digital policy. The common and specific features of the protest activity of Russian and foreign youth in the context of the content and level of their digital culture are characterized. The attention is focused on the dominant trends in the transformation of the practices of protest behavior in online and offline formats, taking into account the restrictive measures caused by the spread of COVID-19. \ud Methods. The work was prepared within the framework of political science discourse using modern scientific theories and concepts. The authors rely on the main provisions of the activity-activist approach (A. Giddens, V. Yadov), the concept of ā€œtraumatic changesā€ (P. Sztompka) and ā€œnetwork societyā€ (M. Castells). At the same time, the characterization of digital transformations and innovations (society, politics, culture) is carried out in the context of the ideas of ā€œdigital countercultureā€ (C. Gere), domestic researchers analyzing the consumer behavior of youth in the digital environment (T. Beregovskaya, S. Grishaeva). The work uses theoretical and empirical methods for analyzing the results obtained by leading domestic and foreign research centers, as well as with the direct participation of the authors in the implementation of grant activities. Results. An attempt is made to conduct political science analysis of the modern approaches to understanding the phenomenon of youth protest activity, its dominant forms in the context of the institutionalization of digital policy and the transformation of value orientations in the new structure of ā€œdigital cultureā€. The relationship between the protest activity of representatives of domestic and foreign youth, the practices of their destructive/constructive protest behavior using digital technologies in order to legitimize/ delegitimize the political regime is traced. Highlighted the real and potential resources of the authorities and administration, civil society institutions to minimize destructive factors that contribute to the strengthening of protest (civil, political, etc.) activity of various groups of young people in the context of the spread of the global pandemic. The results of theoretical and empirical studies that reveal the regional specifics of institutional forms of protest activity in modern Russia are interpreted. Discussion. The question of the forms and technologies of transformation of protest activity, taking into account the substantive characteristics of the digital culture of youth, its inclusion in the system for ensuring the stable and safe development of the Russian Federation, remains poorly studied. Authorsā€™ contributions. S.A. Pankratov developed the theoretical basis of the research and carried out the general scientific edition of the article. S.I. Morozov analyzed the dominant tendencies of youth protest activity. S.D. Gavrilov interpreted the results of theoretical and empirical studies characterizing the process of institutionalization of digital policy

    Design of a Graphene Nitrene Two-Dimensional Catalyst Heterostructure Providing a Well-Defined Site Accommodating 1 to 3 Metals, with Application to COā‚‚ Reduction Electrocatalysis for the 2 Metal Case

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    Recently, the reduction of COā‚‚ to fuels has been the subject of numerous studies, but the selectivity and activity remain inadequate. Progress has been made on single-site two-dimensional catalysts based on graphene coupled to a metal and nitrogen for the COā‚‚ reduction reaction (COā‚‚RR); however, the product is usually CO, and the metalā€“N environment remains ambiguous. We report a novel two-dimensional graphene nitrene heterostructure (grafiNā‚†) providing well-defined active sites (Nā‚†) that can bind one to three metals for the COā‚‚RR. We find that homobimetallic FeFeā€“grafiNā‚† could reduce COā‚‚ to CHā‚„ at āˆ’0.61 V and to CHā‚ƒCHā‚‚OH at āˆ’0.68 V versus reversible hydrogen electrode, with high product selectivity. Moreover, the heteronuclear FeCuā€“grafiNā‚† system may be significantly less affected by hydrogen evolution reaction, while maintaining a low limiting potential (āˆ’0.68 V) for C1 and C2 mechanisms. Binding metals to one Nā‚† site but not the other could promote efficient electron transport facilitating some reaction steps. This framework for single or multiple metal sites might also provide unique catalytic sites for other catalytic processes

    Inducing room-temperature valley polarization of excitonic emission in transition metal dichalcogenide monolayers

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    The lowest energy states in transition metal dichalcogenide (TMD) monolayers follow valley selection rules, which have attracted vast interest due to the possibility of encoding and processing of quantum information. However, these quantum states are strongly affected by the temperature-dependent intervalley scattering causing complete valley depolarization, which is hampering any practical applications of TMD monolayers at room temperature. Therefore, for achieving clear and robust valley polarization in TMD monolayers one needs to suppress parasitic depolarization processes, which is the central challenge in the growing field of valleytronics. Here, in electron-doping experiments on TMD monolayers, we demonstrate that strong doping levels beyond 101310^{13}~cmāˆ’2^{-2} can induce 61\% and 37\% valley contrast at room temperature in tungsten diselenide and molybdenum diselenide monolayers, respectively. Our results indicate that charged excitons in TMD monolayers can be utilized as quantum units in designing of practical valleytronic devices operating at 300 K

    Mechanism and kinetics of the electrocatalytic reaction responsible for the high cost of hydrogen fuel cells

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    The sluggish oxygen reduction reaction (ORR) is a major impediment to the economic use of hydrogen fuel cells in transportation. In this work, we report the full ORR reaction mechanism for Pt(111) based on Quantum Mechanics (QM) based Reactive metadynamics (RĪ¼D) simulations including explicit water to obtain free energy reaction barriers at 298 K. The lowest energy pathway for 4 e^āˆ’ water formation is: first, *OOH formation; second, *OOH reduction to H_2O and O*; third, O* hydrolysis using surface water to produce two *OH and finally *OH hydration to water. Water formation is the rate-determining step (RDS) for potentials above 0.87 Volt, the normal operating range. Considering the Eleyā€“Rideal (ER) mechanism involving protons from the solvent, we predict the free energy reaction barrier at 298 K for water formation to be 0.25 eV for an external potential below U = 0.87 V and 0.41 eV at U = 1.23 V, in good agreement with experimental values of 0.22 eV and 0.44 eV, respectively. With the mechanism now fully understood, we can use this now validated methodology to examine the changes upon alloying and surface modifications to increase the rate by reducing the barrier for water formation

    Place where neonaticide was committed as a feature of the objective side of the crime

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    Is devoted to the study of the place of the murder by the mother of a newborn child as a feature of the objective side of the crime. The paper provides a detailed analysis of the crime scene from the legal, criminological and geographical points of view. Consider separately the place of birth of the child, the place of the murder of the newborn, the places of burial and the discovery of the body of the neonate. Text analysis of court decisions in criminal cases incriminated under Article 106 of the Criminal Code of the Russian Federation is used as the main method of scientific research. Statistical and geographical methods contribute to study the data on crimes under Article 106 of the Criminal Code, as well as comparative-legal method is used in the study of the act from a criminal law point of view. Conclude that most frequent cases of newborns murder are committed by mothers in regions of Russia with high population density - most often in Central Russia, the North Caucasus, the Volga region, the Kama region and Southern Siberia. In almost half of the cases, this crime is committed in rural settlements. The research shows certain consistency between the high number of committed crimes related to the murder of a newborn child by a mother, the level of income of the population and the level of socio-economic development of the regions. Most often, the place of committing the above acts is a dwelling (house, apartment and bathrooms in them), about 1/4 of the crimes are committed in the yard and/or outbuildings located in it. The authors distinguish separately the places where the bodies of murdered neonates are found, since the place of the crime and the place where the corpse of an infant is found differ due to the desire of recently delivered women to conceal the fact of murdering. Apart from the house, the most common places a newborn corpse is found are garbage dumps, containers and garbage cans, as well as pit latrines and abandoned places in the street

    Light irradiation induced brittle-to-ductile and ductile-to-brittle transition in inorganic semiconductors

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    The intrinsic brittleness of inorganic semiconductors prevents them from extended engineering applications under extreme conditions of high temperature and pressure, making it essential to improve their ductility. Here, we applied the constrained density functional theory to examine the relationship between plastic deformation and photonic excitation in sphalerite ZnS and related II-IV semiconductors. We find that ZnS transforms from a dislocation dominated deformation mode in the ground state to a twin dominated deformation mode with bandgap electronic excitations, leading to brittle failure under light illumination. This agrees very well with recent mechanical experiments on single crystal ZnS. More interesting, we predict that the ZnTe and CdTe display the opposite mechanical behavior compared to ZnS, exhibiting ductility close to metallic level with bandgap illumination, but typical brittle failure in the dark state. Our results provide a general approach to design more shapeable and tougher semiconductor devices by controlling exposure to electronic excitation
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