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Transcranial alternating current stimulation modulates risky decision making in a frequency controlled experiment
eNeuro. 2017. P. 1–10.
In this study, we investigated the effect of transcranial alternating current stimulation (tACS) on decision making under risk and executive control in humans. Stimulation was delivered online at 5, 10, 20, and 40 Hz on the left and right DLPFC while subjects performed a modified risky decision making task. This task allowed subjects to voluntarily switch between risky and safe options associated with potential gains or losses while simultaneously measuring the cognitive control component (voluntary switching) of decision making. Our results revealed a frequency- and hemisphere-specific effect of 20Hz tACS delivered on the left DLPFC that significantly increased risk-taking. These results suggest a modulatory role of 20 Hz neural oscillations on the left DLPFC in risk-taking perhaps by activating the brain’s reward system.
Language:
English
Publication based on the results of:
Gusein-Zade S., Campillo A., Delgado F., Mathematische Zeitschrift 2026 Vol. 314 No. 1 P. 1–22
For a subfield $\K$ of the field $\C$ of complex numbers, we consider curve and divisorial valuations on the algebra $\K[[x,y]]$ of formal power series in two variables with the coefficients in $\K$. We compute the semigroup Poincar\'e series and the classical Poincar\'e series of a (discrete, rank one) valuation on it. ...
Added: October 13, 2026
Vikhrova E., Petrovskiy V., Высшее образование в России 2025 Т. 34 № 12 С. 10 – 32
This paper examines the psychological well-being of university students across various learning formats (in-person, online, and hybrid) and reflects on the role artificial intelligence (AI) tools play in supporting this well-being. The paper analyzes the impact of the learning formats on the dynamics of anxiety and depression levels in students, on their coping strategies for ...
Added: October 12, 2026
Mishuris G., Meylan M. H., Pelinovsky E., Journal of Fluid Mechanics 2026 Vol. 1045 Article A4
In this paper, we revisit the classic problem of a wave field on a sloping beach of an arbitrary angle and propose a general approach that allows the computation of regular solutions of the problem regardless of the angle. We use the Mellin-transform technique, reducing the problem to singular integral equations with fixed-point singularities of ...
Added: October 12, 2026
Ogundele K. S., Durodola F. A., Social Psychology of Education 2026 No. 29 Article 127
This study examines the association between teacher expectations and mathematics growth among first-grade students in Russia. The sample included 1,155 students and 48 teachers from public schools in two Siberian regions. Students’ mathematics performance was assessed using START, with vertical test alignment used to measure individual growth. Multilevel regression models estimated on 20 multiply imputed ...
Added: October 12, 2026
Gusein-Zade S., М.: МЦНМО, 2026.
Книга содержит курс лекций по дифференциальной геометрии и топологии, читавшихся автором на механико-математическом факультете МГУ в разные годы. В дополнениях приводятся некоторые сюжеты (связности в расслоениях, теорема Фробениуса, производные Ли и др.), которые были включены в курс в отдельные годы либо содержались в аналогичных курсах лекций в Независимом московском университете.
Для студентов математических и физических специальностей. ...
Added: October 12, 2026
Veselova L. S., Азия и Африка сегодня 2026 № 9 С. 38–48
The article examines the consumer practices of China’s middle class in the context of the transformation of Confucian values under the influence of market reforms, urbanization, the expansion of the domestic market, and the state ideology of contemporary China. The focus is on how traditional norms of family responsibility retain their normative significance while being ...
Added: October 12, 2026
Nikulina Y., / Высшая школа экономики. Серия EC "Economics". 2026. № 1.
This paper estimates the impact of the international sanctions of 2014 and 2022, as well as the food embargo, on the technical efficiency of agricultural enterprises. The assessment was carried out using panel data from agricultural enterprises specializing in dairy production in the Leningrad Region for the period 2010–2023, employing stochastic frontier analysis. It is ...
Added: October 11, 2026
Fudan Journal of the Humanities and Social Sciences 2026
This study reassesses whether economic globalization is compatible with carbon mitigation across nine Shanghai Cooperation Organization economies over 1997 to 2024. A sequenced panel design is applied: pre-estimation diagnostics establish cross-sectional dependence, slope heterogeneity, and mixed integration orders; fixed effects with Driscoll and Kraay standard errors provides the preferred conditional mean estimate; Hansen threshold regression, ...
Added: October 11, 2026
WANG P., YANG Y., ZHANG Y. et al., Chinese Journal of Applied Psychology 2025 Vol. 31 No. 1 P. 45–53
Objective: To revise The Developmental Crisis Questionnaire (DCQ) and test its reliability and validity in adult age groups. Methods: The Chinese version of DCQ was determined by item analysis and exploratory factor analysis, and its structure was determined by confirmatory factor analysis. Finally, the reliability and validity of the scale were tested. Results: The 10 items of Chinese DCQ ...
Added: October 11, 2026
Торговые ограничения как инструмент международного давления (на примере импортных поставок в Россию)
Biryukova O. V., США и Канада: экономика, политика, культура 2026 Т. 10 С. 37–50
The article examines the theoretical and practical aspects of the application of trade restrictions as a tool of international pressure using the case of import supplies to Russia. Special attention is paid to legal conflicts within the World Trade Organization (WTO) related to the application of national security exceptions (Article XXI of the GATT), and ...
Added: October 10, 2026
М.: НИЦ Инфра-М, 2026.
This textbook synthesizes modern concepts and approaches in the field of project management and is designed for use in project management courses. The material is based on the recommendations of the International Project Management Association (IPMA) and international standards ISO 21500 and ISO 21502.
It meets the requirements of the latest generation of federal state educational ...
Added: October 10, 2026
Брычков М. Е., Незнанов А.А., Программирование 2026 № 4 С. 50–66
The matrix profile (MP) quickly became one of the most important time series preprocessing methods when it was introduced in 2016, facilitating the solution of a wide range of time series analysis problems, in particular anomaly and pattern detection problems. The high significance has led to the emergence of various tools for MP calculating, but ...
Added: October 9, 2026
М.: Юрайт, 2026.
The Collection of Olympiad Problems (COP) in Probability Theory and Mathematical Statistics (PTMS) is offered as a teaching aid primarily for university students and faculty as a developmental supplementary resource, expanding the range of problems to be solved in lectures, seminars, and out-of-class independent work with students in various formats, including (as the title suggests) ...
Added: October 9, 2026
Aleskerov F. T., Вайншток А. П., Делахова А. М. et al., Информационные процессы 2026 Т. 26 № 3 С. 895–913
The development and effective management of territorial entities are priority issues for all states, particularly in the context of the digital transformation of public administration. Over the past decade, the integration of information technologies into municipal and regional planning has significantly altered approaches to strategic development, service delivery, and public engagement. This paper describes the ...
Added: October 9, 2026
Petrovskiy V., Социальная психология и общество 2026 Т. 17 № 1 С. 183 – 186
The article discusses the paper by G.V. Akopov “Stages of categorical design of social psychology in Russia (on the 95th anniversary of B.D. Parygin)”, published in issue 2 (2025) of the journal “Social Psychology and Society”. ...
Added: October 9, 2026
Bessonova E., Popova S., Fedulova M., Emerging Markets Review 2026 Vol. 75 Article 101564
To mitigate the shocks caused by the pandemic-related restrictions, many governments implemented extensive support measures for companies facing sharp declines in revenues. In Russia, loan guarantee programmes allowed many firms to apply for loans during the pandemic. As a result, the number of small loans soared. Participation in the loan guarantee programmes helped firms in ...
Added: October 8, 2026
Gavrilova E., Novoselova K., Myachykov A. et al., Psychology. Journal of the Higher School of Economics 2026 Vol. 23 No. 3 P. 498–511
The term “broad autism phenotype” (BAP) refers to individuals who do not meet the diagnostic criteria for autism but share some of its features, including social difficulties and atypicalities in visual perception and attention that have been linked to a detail-oriented cognitive style. To examine both the cognitive and social aspects of BAP, we employed ...
Added: October 8, 2026
Nikulina Y., Jamali Jaghdani T., Götz L. et al., / Series "Working Papers". 2026.
The impact of state subsidies on Russia's post-Soviet dairy output remains controversial; this study provides an empirical analysis of that relationship. Using an unbalanced panel dataset of 123 dairy enterprises in the Leningrad Region spanning the period from 2010 to 2023, we employ stochastic frontier analysis to assess these relationships. The results indicate that subsidies ...
Added: September 30, 2026
Kapeliushnikov R., / Высшая школа экономики. Серия WP3 "Проблемы рынка труда". 2026. № WP3/2026/02.
The paper is the first attempt in the Russian literature to assess returns to platform employment in the Russian labor market. The theory offers no clear predictions regarding its impact on workers’ earnings: there might be both a premium and a penalty. We distinguish three groups of workers: employees; self-employed using internet-platforms; self-employed not using ...
Added: September 28, 2026
Usvitskiy A., Mizyakov V., / Series "SSRN Working Paper Series". 2026.
Added: September 24, 2026
Poddiakov A., / Series Social Science Research Network "Social Science Research Network". 2026. No. 7437658.
Clarity of knowledge and reasoning is necessary in many cases. Yet vagueness in scientific thinking related to surprise, curiosity, "ability to engage with not-knowing" (de Freitas) and abductive reasoning is also a crucially important source of scientific creativity which supplements combinatorial logic when dealing with the already known. Starting from studies by C. S. Peirce ...
Added: September 15, 2026
/ Series SSRN Working Paper Series "SSRN Working Paper Series". 2026.
Assessment item development requires careful control of construct alignment, response structure, difficulty, language, and review evidence. Large language models can accelerate item drafting, but ad hoc prompting is difficult to audit or reproduce. AIGRA is an R package for structured, agentic item generation, review, and analysis. It supports tabular item-bank templates, Python-backed generation workflows, direct ...
Added: September 14, 2026
Zhuravleva T., Afanasev K., Engelmann J. et al., / Series "SSRN Working Paper Series". 2026.
Extortionary ("harassment") bribery can persist even when widely condemned, consistent with a coordination problem sustained by beliefs about what others do and what others consider acceptable. We study whether a minimal institutional featurethe presence of a third-party monitor empowered to punish-shifts (i) normative expectations about extortion and compliance and (ii) empirical expectations about their prevalence. ...
Added: July 22, 2026
Mishin A., Guerrieri L., Kim J., / Series 2026-042 "Finance and Economics Discussion Series (FEDS)". 2026.
Within narrowly defined industries, the most productive firms produce far more than the least productive from the same inputs, and this dispersion widens in downturns. We build a tractable representative-agent model in which financial frictions—adverse selection and moral hazard—make firms sort endogenously into lenders, strategic defaulters, and producers. As credit conditions vary, the resulting misallocation ...
Added: June 28, 2026