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Thermal desorption combined with atmospheric pressure photo ionization for the analysis of volatile compounds and its possible applications
European Journal of Mass Spectrometry. 2016. Vol. 22. No. 6. P. 313–317.
Kostyukevich Y., Borisova L. A., Kononikhin A., Popov I., Kukaev E., Nikolaev E.
We report an approach to study volatile organic compounds based on thermal desorption combined with atmospheric pressure photo ionization. The approach allows the sequential evaporation of different fractions of the sample, which simplifies the mass spectrum. We have applied the developed method for the detection of petroleum in vegetable oil. We have shown that in the negative mode, ions of fatty acids corresponding to vegetable oil dominates, while in the positive mode under relatively low temperature the light fraction of petroleum rapidly evaporates making it easy detectable.
Language:
English
Tkachuk A., Кудинова И. В., Экономические науки 2026 № 3 С. 256
The article examines the process of economic decoupling between the United States of America and the People’s Republic of China in the context of the ongoing transformation of the global economy. The aim of the study is to assess the actual depth of decoupling based on an analysis of key trade, value-added, and investment indicators. ...
Added: May 26, 2026
Switzerland: Springer Publishing Company, 2026.
In this volume of “Lecture Notes in Networks and Systems” we are pleased to present the proceedings of the 25th International Multidisciplinary Conference on Reliability and Statistics in Transportation and Communication” (RelStat-2025), which took place in hybrid form in Riga, Latvia on October 16–18, 2025. This event belongs to a con ference series started in ...
Added: May 25, 2026
Шелованова Т. И., Синяков А. А., Russian Journal of Economics 2025 No. 11 P. 47–75
The booming retail trade and the above-target consumer prices inflation in 2023–2024 in Russia, amid tightening monetary policy stance, raise an issue of the strength of the monetary policy interest rate channel. The focus of our paper is the interest rate elasticity (given inflation expectations) of a household’s loan request probability. We argue that a ...
Added: May 25, 2026
Kaisarova V. P., Коклев К. С., СПб.: Издательство СПбГЭУ, 2025.
The article examines the trends in the development of territorial accessibility of public transport for the population of the largest city based on the geoinformation analysis of the spatial features of its infrastructure. The article provides a transport dynamic for the period 2015-2024 based on cluster analysis of data on individual types of transport and ...
Added: May 25, 2026
Караваева Е. А., Кулигин Л. А., Rezunik L. et al., Труды Института системного программирования РАН 2026 Т. 38 № 3 С. 67–94
В статье представлен метод рефакторинга исходного кода на основе интеграции большой языковой модели (LLM) и расширенной UML-модели программного кода. Предложенный подход позволяет выявлять проблемные участки кода с использованием функций тревожности и структурных метрик классов, а затем выполнять автоматизированный рефакторинг. Ключевой особенностью метода является использование LLM для генерации формальных спецификаций на языке OCL (Object Constraint Language), ...
Added: May 24, 2026
Tyukin I., Tyukina T., van Helden D. P. et al., Information Sciences 2024 Vol. 678 Article 120856
AI errors pose a significant challenge, hindering real-world applications. This work introduces a novel approach to cope with AI errors using weakly supervised error correctors that guarantee a specific level of error reduction. Our correctors have low computational cost and can be used to decide whether to abstain from making an unsafe classification. We provide ...
Added: May 23, 2026
Zaikin A., Sviridov I., Sosedka A. et al., Technologies 2026 Vol. 14 No. 2 Article 84
High-dimensional tabular data are common in biomedical and clinical research, yet conventional machine learning methods often struggle in such settings due to data scarcity, feature redundancy, and limited generalization. In this study, we systematically evaluate Synolitic Graph Neural Networks (SGNNs), a framework that transforms high-dimensional samples into sample-specific graphs by training ensembles of low-dimensional pairwise ...
Added: May 23, 2026
Kibkalo Vladislav, Chertopolokhov V., Mukhamedov A. et al., IEEE Access 2026 Vol. 14 P. 14369–14392
This study presents on-the-fly identification and multi-step prediction of nonlinear systems with delayed inputs using a dynamic neural network combined with a smooth projection onto ellipsoids. The projection enforces parameter constraints that guarantee stability, while a Lyapunov–Krasovskii analysis yields computable ultimate error bounds. Riccati-type matrix inequalities are derived, providing an efficient vectorization–projection–devectorization implementation suitable for ...
Added: May 22, 2026
Paklina S., Parshakov P., Teplykh G., The Journal of the New Economic Association 2026 Vol. 70 No. 1 P. 279–301
This paper investigates the relationship between online recruitment and unemployment in Russia within the Beveridge curve (the unemployment–vacancy curve) framework. Using panel data for 81 Russian regions over the period 2006–2022, we examine how the expansion of online job boards affects regional unemployment dynamics. The empirical
analysis is based on fi xed- effects and instrumental- variable ...
Added: May 22, 2026
Rincon C. J., Alekseeva O., Vukovic D. et al., Risk Management 2026 No. 28 Article 38
This study examines the long-term effects of the European Central Bank’s (ECB) unconventional monetary policy (UMP) interventions on the yields of sovereign bonds in the Eurozone. Using a sample of 14 European countries from January 2009 to December 2023, our findings indicate that increases of 1 billion euros in the ECB’s balance sheet are associated ...
Added: May 22, 2026
Loshkareva M. E., Matveeva N., Вестник Томского государственного университета. История 2026 № 100 С. 112–118
This research is an endeavor to apply social network analysis (SNA) to the study of a medieval narrative source. The authors suppose that the use of network analysis may offer new possibilities in the study of the history of regions characterized by some political fragmentation. Authors tried to construct networks of historical interactions from 1193 ...
Added: May 22, 2026
Монгуш В. Р., Novikova A., Креативные индустрии 2026 Т. 2 № 1 С. 23–41
This article analyzes the historical and cultural background, as well as the current situation and development prospects of the creative industries ecosystem in the Republic of Tuva. A comparative analysis of this remote, subsidized region and its neighbors, the Sakha Republic (Yakutia) and Krasnoyarsk Krai, revealed its strengths, vulnerabilities, and strategies of young creative professionals ...
Added: May 21, 2026
Zizin A., Plotnikov S., Деева В. В. et al., Инновации и инвестиции 2025 № 6 С. 36–39
The article is devoted to the study of the innovative infrastructure of Russian universities. The importance of developing innovative infrastructure, the practice of their formation (using the example of the country's leading universities) is studied. A classification of infrastructure objects is given and the effectiveness of their use in the practice of Russian universities is ...
Added: May 21, 2026
Plotnikov S., Деева В. В., Тенденции развития науки и образования 2023 № 102-2 С. 113–120
In the scientific article are considered the main technologies of corporate innovative entrepreneurship. Each technology is examined separately, which allows for understanding the purposefulness of using each tool in practice at your company. ...
Added: May 21, 2026
Plotnikov S., Деева В. В., Деева А. В., Тенденции развития науки и образования 2023 № 102-2 С. 64–67
Short-term cyclicity in modern economic systems is caused by a number of factors, including insufficient information. Information about the state of the market, supply and demand is received with a delay due to the processes of its collection, processing and dissemination. The time lag in obtaining information affects the business activity of enterprises, since they ...
Added: May 21, 2026
Abashkin V., Abdrakhmanova G., Bogdanov T. et al., М.: НИУ ВШЭ, 2026.
Институт статистических исследований и экономики знаний НИУ ВШЭ изучает аспекты цифровой трансформации машиностроения, в том числе оценивает необходимый для этого ресурсный, в частности кадровый, потенциал организаций отрасли.
Эмпирической базой для анализа послужили результаты обследования более 1,7 тыс. организаций машиностроения, проведенного в 2025 г. в рамках Мониторинга цифровой трансформации бизнеса. К машиностроению отнесены производители: компьютеров, электронных и оптических изделий (код по ОКВЭД2 — 26); электрооборудования (27); ...
Added: May 21, 2026
Abashkin V., Abdrakhmanova G., Bogdanov T. et al., М.: НИУ ВШЭ, 2026.
Институт статистических исследований и экономики знаний НИУ ВШЭ изучает аспекты цифровой трансформации машиностроения, в том числе оценивает текущий уровень использования цифровых технологий и перспективный спрос на них.
Эмпирической базой для анализа послужили результаты обследования более 1,7 тыс. организаций машиностроения, проведенного в 2025 г. в рамках Мониторинга цифровой трансформации бизнеса. К машиностроению отнесены производители: компьютеров, электронных и оптических изделий (код по ОКВЭД2 — 26); электрооборудования (27); машин и оборудования, не включенных в другие ...
Added: May 21, 2026
Abashkin V., Abdrakhmanova G., Bogdanov T. et al., М.: НИУ ВШЭ, 2026.
Институт статистических исследований и экономики знаний НИУ ВШЭ изучает аспекты цифровой трансформации химической промышленности, в том числе оценивает необходимый для этого ресурсный, в частности кадровый, потенциал организаций отрасли.
Эмпирической базой для анализа послужили результаты обследования более тысячи организаций химической промышленности, проведенного в 2025 г. в рамках Мониторинга цифровой трансформации бизнеса. К химпрому отнесены в соответствии с ОКВЭД2 производители: химических веществ и химических продуктов (код по ОКВЭД2 — 20); лекарственных средств ...
Added: May 21, 2026
Abashkin V., Abdrakhmanova G., Bogdanov T. et al., М.: НИУ ВШЭ, 2026.
Институт статистических исследований и экономики знаний НИУ ВШЭ изучает аспекты цифровой трансформации химической промышленности, в том числе оценивает текущий уровень использования цифровых технологий и перспективный спрос на них.
Эмпирической базой для анализа послужили результаты обследования более тысячи организаций химической промышленности, проведенного в 2025 г. в рамках Мониторинга цифровой трансформации бизнеса. К химпрому отнесены в соответствии с ОКВЭД2 производители: химических веществ и химических продуктов (код по ОКВЭД2 — 20); лекарственных средств и материалов, ...
Added: May 21, 2026
Гущина В. А., / Series chemrxiv-2023-vpzhz-v2 "ChemRxiv". 2023.
All-inorganic perovskite CsPbBr3 and Cs4PbBr6 nanoparticles are being intensively studied due to their unique properties and wide range of applications; however, however, the nature of their optical properties is not yet fully understood due to the difficulty of synthesis of singlephase nanoparticles. In this article we describe the features of the synthesis of single-phase particles ...
Added: May 14, 2026
Pilé I., Deng Y., Shchur L., / Series arXiv "math". 2026. No. 2604.10254.
We investigate the spatial overlap of successive spin configurations in Markov chain Monte Carlo simulations using the local Metropolis algorithm and the Svendsen-Wang and Wolff cluster algorithms. We examine the dynamics of these algorithms for two models in different universality classes: the Ising model and the Potts model with three components. The overlap of two ...
Added: April 20, 2026
IEEE, 2025.
The themes for this year's conference were chosen as a means of bringing together academics and industrialists, engineering and management research, and providing a basis for discussion of issues arising across the engineering and business community in relation to Quality Management, Information Technologies, Digital Security aimed at developing engineers and managers for the future. The ...
Added: April 17, 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