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Об одном алгоритме оптимизации процесса фокусировки сложных оптических систем
Качество. Инновации. Образование. 2013. № 5. С. 57–60.
Афанасьев В. Н., Попов Д. А.
This article considers the modified digital image sharpness analysis algorithm based on the Sobel operators application. Based on this the optimized autofocus process of complex optical a system has been developed. The possibilities of application of the results to the medico-biological probes processing on modern automated microscopes are discussed.
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
Власов С. А., Nevalennyi M., Сафиулин Р. Р. et al., / Банк России. Серия Аналитическая записка "Материалы Банка России". 2026.
В аналитической записке обсуждается долгосрочно устойчивый уровень цены на российскую нефть. Это тот уровень, к которому цена нефти, вероятнее всего, будет тяготеть в долгосрочной перспективе. Потребность в его определении возникает по нескольким причинам. Во-первых, цена на нефть остается одним из ключевых экономических показателей российской экономики, определяющих экспорт, обменный курс рубля, прибыль, доходы и расходы бюджета, ...
Added: June 27, 2026
Глазова А. М., Nevalennyi M., Синяков А. А., / Банк России. Серия Препринты Банка России "Серия докладов об экономических исследованиях". 2025. № 154.
The paper proposes a graphical model of a small open economy. The dynamics of the graphical model is then illustrated using impulse responses from the corresponding formal semi-structural model (QPM model). The authors have several goals in preparing this description of the graphical macroeconomic model. The first goal of the paper is to present an adapted ...
Added: June 27, 2026
Mishin A., Guerrieri L., Canzoneri M. et al., / Series 2026-042 "Finance and Economics Discussion Series (FEDS)". 2026.
Added: June 27, 2026
Bogatyrev R., Sandomirskaia M., / NRU Higher School of Economics. Series EC "Economics". 2026. No. 19(1).
This work develops a tractable model of price competition in fragmented markets where consumers consider both local and distant varieties, with cross-regional purchases subject to stochastic costs. Global competition and full localization emerge as polar cases; hybrid competition is not merely intermediate and exhibits distinctive features such as an endogenous price ceiling and non-monotonic entry ...
Added: June 11, 2026
Kravtsova M., Musaev A. U., Welzel C., / Series "SSRN Working Paper Series". 2026.
Elaborating on Welzel et al.'s "Cool Water Theory," our study zooms into the more limited (albeit still varied) framework conditions of Russia's huge territory. Within Russia's confines, we examine how the combination of moderately cool seasons with steady rain (i.e., Cool Water) affects sub-national areas' contemporary societal progress in two modernization indicators: material prosperity in ...
Added: June 3, 2026
Синяков А. А., Зверева В., Шелованова Т. И., / Центральный банк Российской Федерации. Серия 132 / 2024 "Серия докладов об экономических исследованиях". 2024. № 132.
At the end of 2023, Russia updated its Strategy for Improving Financial Literacy and Developing Financial Culture Until 2030. Unlike the previous strategy, the current strategic goals include not only financial literacy but also financial culture. ‘Culture’ is normative and socially preferred behaviour. The updated strategy brings into focus the relationship between financial literacy and responsible financial behaviour. To explore this relationship, the authors rely on data from the All-Russian Survey of Consumer Finance (2020 and 2022). Socially ...
Added: June 1, 2026
Vorchik A., / SSRN. Серия Social Science Research Network "Social Science Research Network". 2026.
This work is devoted to a theoretical explanation of the Easterlin paradox, according to which long-term economic growth does not make average level of people's happiness increasing. By happiness, we mean the intensity of emotions people experience while comparing their new income with its expected value, or the target income with its original value. In the first case, ...
Added: May 31, 2026
Sizov A., Rodionova M., Sedashov E. et al., / NRU Higher School of Economics. Series PS "Political Science". 2026. No. 1.
Rapid development of surveillance technologies is one of the most socially important consequences of the digital age. This paper investigates the factors determining consent to surveillance of various types of personal data and contributes to rapidly growing research on citizens perceptions of surveillance practices. Relying on a comprehensive survey experiment, we study the effects of ...
Added: May 15, 2026
Карцева М. А., Peresetsky A., / Высшая школа экономики. Серия WP2 "Количественный анализ в экономике". 2026. № WP2/2026/01.
This study examines the association between health status among elderly individuals living alone and pet ownership (cats, dogs). We employ data from the “Time Use Survey” conducted by the Federal State Statistics Service (Rosstat) in 2019, which contains information on more than 10,000 elderly individuals living alone aged 60 or older in Russia, including data ...
Added: May 8, 2026
Ustyuzhanin V., / Series Econometrics "arxiv". 2026.
This paper proposes Covariate-Balanced Weighted Stacked Difference-in-Differences (CBWSDID), a design-based extension of weighted stacked DID for settings in which untreated trends may be conditionally rather than unconditionally parallel. The estimator separates within-subexperiment design adjustment from across-subexperiment aggregation: matching or weighting improves treated-control comparability within each stacked subexperiment, while the corrective stacked weights of Wing et ...
Added: April 3, 2026
Vorchik A., / Social Science Research Network. Серия SSRN Working Paper Series "SSRN Working Paper Series". 2026.
This article is devoted to the phenomenon of intrinsic motivation, to understand which two models are proposed. We study how positive/negative intrinsic motivation to work (experienced utility) affects worker's individual labour supply (model I) and the amount of effort they exert (model II). In model I, we use intrinsic motivation to explain the positive/negative slope ...
Added: March 15, 2026
Vorchik A., Мамышев М. А., / Series Social Science Research Network "Social Science Research Network". 2025.
In this paper, we develop a formal mathematical model aimed to explain the Dunning-Kruger effect that beginners systematically overestimate their own competence in various fields of knowledge and activity. We argue that the Dunning-Kruger effect arises from the emotional nature of confidence combined with unknown unknowns that it simply can not take into account due ...
Added: February 11, 2026
Musaev A. U., Vorchik A., / Series Social Science Research Network "Social Science Research Network". 2026.
This paper attempts to model the evolutionary theory of modernization and democratization. The model reflects the key provisions of R. Inglehart and C. Welzel's theory and provides a microfoundation for the adaptation of subjective values to the objective importances of the survival factors and the structure of the labour markets from the perspective of evolutionary ...
Added: February 10, 2026
Antsygina A., Teteryatnikova M., Tremewan J. C. et al., / Series "SSRN Working Paper Series". 2025.
Many competitive environments allow for a third party to be indirectly involved by supporting one or both sides in the conflict. Such support can come from trade partners, colleagues, or allies, who can in turn benefit from a supported party's success. We use theory and an experiment to investigate how support relationships develop endogenously in ...
Added: January 31, 2026
Akhmedova A., / Series "SSRN Working Paper Series". 2026.
The study explores a psychological phenomenon of inaction inertia-avoiding action after missing a more favourable opportunity. Unlike action inertia (e.g.,sunk costs effect), inaction inertia has been less studied, particularly in economic contexts. Considering the reference dependent nature of the phenomenon, I build on the work of Kőszegi and Rabin (2006) to examine how past experiences ...
Added: January 23, 2026
Александров М. С., Каширин И. А., Melman A., В кн.: Прикладная математика и фундаментальная информатика : материалы XIV Междунар. молодеж. науч.-практ. конф. с элементами науч. школы (Россия, Омск, 20–25 мая 2024 г.).: Омск: Омский государственный технический университет, 2024. С. 61–62.
Added: November 23, 2024
Melman A., Evsyutin O., Компьютерные исследования и моделирование 2023 Т. 15 № 1 С. 197–210
Data hiding in digital images is a promising direction of cybersecurity. Digital steganography methods provide imperceptible transmission of secret data over an open communication channel. The information embedding efficiency depends on the embedding imperceptibility, capacity, and robustness. These quality criteria are mutually inverse, and the improvement of one indicator usually leads to the deterioration of ...
Added: March 15, 2023
Melman A., Evsyutin O., Shelupanov A., Technologies 2020 Vol. 8 No. 4 Article 79
In the field of information technology, information security technologies hold a special place. They ensure the security of the use of information technology. One of the urgent tasks is the protection of electronic documents during their transfer in information systems, including smart systems. This paper proposes a technology for protecting electronic documents containing digital images. ...
Added: December 24, 2020
Evsyutin O., Кокурина А.С., Мещеряков Р. В., В кн.: GraphiCon 2018: труды 28-й Международной конференции по компьютерной графике и машинному зрению.: Томск: Национальный исследовательский Томский политехнический университет, 2018. С. 297–300.
Steganographic concealment of information in digital images frequency domain involves such problems as loss of embedded information and distortion of the natural model of digital images. Previously, the authors of this study proposed an approach to solving the first problem, consisting in iterative correction of embedding errors, and obtained an algorithm based on the QIM ...
Added: September 6, 2019
Шумская О. О., Evsyutin O., В кн.: GraphiCon 2018: труды 28-й Международной конференции по компьютерной графике и машинному зрению.: Томск: Национальный исследовательский Томский политехнический университет, 2018. С. 185–189.
The research of informational content of features in the spatial domain and the frequency domain of compressed JPEG-images at the stegoanalisys is presented. Selection of features with application of the greedy algorithm with an exception is made and the set of informative features on the basis of which criterion function of steganographic embedding is defined ...
Added: September 6, 2019
Evsyutin O., Кокурина А.С., Шелупанов А. А. et al., Компьютерная оптика 2015 Т. 39 № 4 С. 572–581
In this paper a novel algorithm of information embedding in JPEG images based on the known steganography method «plus minus 1» is proposed and researched. It is shown that the cover image partial filling allows the algorithm to surpass its counterparts due to an original approach to the determination of the DCT coefficients traverse order ...
Added: September 5, 2019
Evsyutin O., Шелупанов А. А., Мещеряков Р. В. et al., Компьютерная оптика 2017 Т. 41 № 3 С. 412–421
In the paper, we consider a particular direction of digital steganography — information embedding into the compressed JPEG images. A scheme of information embedding based on procedures of DCT-coefficients replacement is introduced. Variants of the scheme algorithmic implementation are offered and investigated. A genetic algorithm is used for the improvement of the embedding quality. The ...
Added: September 4, 2019
Evsyutin O., Мещеряков Р. В., Шумская О. О., Вестник компьютерных и информационных технологий 2018 № 10 С. 11–21
Steganalysis of digital images includes creation of feature space, formation of learning selection and qualifier training. Some known steganalysis systems offered for practical use work in space with dimension in tens of thousands of features. Therefore researches directed to identification of the most informative features including indicating use when embedding concrete steganographic primitives are relevant. ...
Added: September 4, 2019