Shabanov N., Kuricheva O., Kurbatova J. et al., / Series Working Papers SSRN "Department of Economics Ca’ Foscari University of Venice". 2026.
The carbon balance of an ecosystem is the difference between Gross Primary Productivity (GPP) and Ecosystem Respiration (Reco) as expressed by Net Ecosystem Exchange (NEE). While remote sensing retrievals of GPP have reached maturity, Reco estimation remains underexplored and ultimately cast bias on NEE. Here we present an end-to-end multi-scale analysis of the mechanism of ...
Added: August 21, 2026
Ponomarenko A., / Series Computer Science "arxiv.org". 2025.
This paper addresses the challenge of merging hierarchical navigable small world (HNSW) graphs, a critical operation for distributed systems, incremental indexing, and database compaction. We propose three algorithms for this task: Naive Graph Merge (NGM), Intra Graph Traversal Merge (IGTM), and Cross Graph Traversal Merge (CGTM). These algorithms differ in their approach to vertex selection ...
Added: July 30, 2026
Piontkovski D., / Series arXiv "math". 2026.
A noncommutative projective variety is defined, following Artin and Zhang, by a graded coherent algebra 𝐴. The category of coherent sheaves is then the quotient qgr(𝐴) of the category of finitely presented graded modules by the subcategory of torsion modules. We consider the categorical and polynomial entropies of the Serre twist, that is, of the ...
Added: June 23, 2026
Piontkovski D., / Series arXiv "math". 2025.
If a symmetric multilinear algebra is weakly nil, then it is Engel. This result may be regarded as an infinite-dimensional analogue of the well-known Jacobian theorem, which states that if a polynomial mapping has a polynomial inverse, then its Jacobian matrix is invertible. This refines a theorem of Gerstenhaber and partially answers a question posed ...
Added: June 23, 2026
Shipilov F., Barnyakov A., Ivanov A. et al., / Series Physics "arxiv.org". 2026.
A fast simulation of the detector response is a vital task in high-energy physics (HEP). Traditional Monte-Carlo methods form the backbone of modern particle physics simulation software but are computationally expensive. We present a machine-learning-based approach to fast simulation of the Focusing Aerogel Ring Imaging Cherenkov (FARICH) detector response. Given a particle track and momentum, ...
Added: May 19, 2026
Derkacheva A., Sakirkina M., Kraev G. et al., /. 2026.
Comprehensive data on natural hazards and their consequences are crucial for effective for risk assessment, adaptation planning, and emergency response. However, many countries face challenges with fragmented, inconsistent, and inaccessible data, particularly regarding local-scale events. To address this data gap in Russia, we developed an end-to-end processing pipeline that scrapes news from various online sources, ...
Added: April 28, 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
Gabdullin N., Androsov I., / Series Computer Science "arxiv.org". 2026.
Label prediction in neural networks (NNs) has O(n) complexity proportional to the number of classes. This holds true for classification using fully connected layers and cosine similarity with some set of class prototypes. In this paper we show that if NN latent space (LS) geometry is known and possesses specific properties, label prediction complexity can ...
Added: April 2, 2026
Sorokin K., Beketov M., Онучин А. et al., / arxiv.org. Серия cs.SI "Social and Information Networks ". 2025.
Community detection in complex networks is a fundamental problem, open to new approaches in various scientific settings. We introduce a novel community detection method, based on Ricci flow on graphs. Our technique iteratively updates edge weights (their metric lengths) according to their (combinatorial) Foster version of Ricci curvature computed from effective resistance distance between the ...
Added: January 15, 2026
Petrovanov I., Sergeev A., / Series Computer Science "arxiv.org". 2025. No. 2512.18332.
Transport coding reduces message delay in packet-switched networks by introducing controlled redundancy at the transport layer: original packets are encoded into coded packets, and the message is reconstructed after the first successful deliveries, effectively shifting latency from the maximum packet delay to the -th order statistic. We present a concise, reproducible discrete-event implementation of transport coding in OMNeT++, including ...
Added: December 24, 2025
Hessian-based lightweight neural network for brain vessel segmentation on a minimal training dataset
Меньшиков И. А., Бернадотт А. К., Elvimov N. S., / Series arXie "Statistical mechanics". 2025.
Accurate segmentation of blood vessels in brain magnetic resonance angiography (MRA) is essential for successful surgical procedures, such as aneurysm repair or bypass surgery. Currently, annotation is primarily performed through manual segmentation or classical methods, such as the Frangi filter, which often lack sufficient accuracy. Neural networks have emerged as powerful tools for medical image ...
Added: December 1, 2025
Tikhonov E., Sneps-Sneppe M., International Journal of Open Information Technologies 2020 Vol. 8 No. 6 P. 51–42
Data transmission using orthogonal functions means combining base carrier signals (scaled by numbers of useful information) into one sent signal. Processing the mixed signal after receiving allows dividing it back into carriers and restoring useful numbers.
What is the most compact set of complex sine waves for this? How will the random components of the spectrum ...
Added: April 9, 2022
Высшее образование как дифференцированный "товар": анализ структурных различий в формировании спроса
Telezhkina M., Ганьшина А. В., Вестник Воронежского государственного университета. Серия: Экономика и управление 2020 № 4 С. 92–101
В работе изучается структура рынка высшего образования в России на основе данных о ВУЗах Москвы и МО за 2019 год путем оценки функции спроса и тестирования ее на наличие структурных изменений. Анализ модели включает в себя оценивание уравнений регрессии с использованием метода наименьших квадратов и метода инструментальных переменных. Заимствуя идеи оценки функции спроса на рынке ...
Added: November 28, 2020
Zevakhina N., Горнштейн Д. В., Егорова А. Д., Урало-алтайские исследования 2021 № 40 С. 7–30
В статье тестируются следующие лексические единицы литературного чувашского языка на предмет проекции пресуппозиции в утвердительном контексте, в контексте отрицания и в контексте условия: наречие каллех ‘опять’, союз та ‘тоже’, ментальные фактивные глаголы манса кай ‘забыть’ и пӗл ‘знать/узнать’, фазовый глагол пӗтер ‘закончить/заканчивать’. Согласно выдвинутой в работе Abusch (2002) гипотезе о делении триггеров пресуппозиций на жесткие ...
Added: November 23, 2020
Bulgakov S. A., В кн.: Современные проблемы математического моделирования, обработки изображений и параллельных вычисленийТ. 2.: Ростов н/Д: ООО "ДГТУ-Принт", 2017. С. 36–44.
The paper covers mathematical and heuristic approaches for solution the image restoration problem. Attention is paid to the least squares method, least absolute deviations, Tikhonov regularization, total variation, Wiener and Kalman filters, as well as matched filter. A description of a new method for constructing the maximum likelihood estimate is given. Such heuristic approaches as ...
Added: September 24, 2018
Akimov P. A., Matasov A. I., IEEE Transactions on Automatic Control 2015 Vol. 60 No. 4 P. 1050–1063
The mixed-norm cost functions arise in many applied optimization problems. As an important example, we consider the state estimation problem for a linear dynamic system under a nonclassical assumption that some entries of state vector admit jumps in their trajectories. The estimation problem is solved by means of mixed l1/l2-norm approximation. This approach combines the ...
Added: November 5, 2017
Чирухин В. А., Записки Горного института 2014 Т. 208 С. 197–202
In the article the methods of processing of statistical data about periodic process by the least squares method with usage of Bessel functions and Fourie numbers are analyzed. The simple method for approximation with a choice of the fluctuation period, proceeding from a minimum of the estimated error is offered. ...
Added: October 31, 2017
Makarov S., Макарова Т. Л., В кн.: Дизайн, технологии и инновации в текстильной и легкой промышленности (ИННОВАЦИИ-2016): сборник материалов Международной научно-технической конференцииЧ. 4.: М.: ФГБОУ ВО "МГУДТ", 2016. С. 112–115.
В статье рассмотрен вопрос удачного применения информационных технологий в дизайне на примере нескольких проанализированных модных шоу. ...
Added: March 9, 2017
Svetunkov S., В кн.: Методологические проблемы многоуровневой теории конкуренции.: СПб.: Левша-Санкт-Петербург, 2016. Гл. 9 С. 73–78.
A new approach to the analysis of the competitive situation on the market. It uses a Gaussian model. ...
Added: February 14, 2017
Miroshnichenko M., Вестник Томского государственного университета. Философия. Социология. Политология 2015 Т. 4 № 32 С. 298–308
В статье рассматриваются темы предметов и проективного отношения в Логико-философском трактате Витгенштейна в отношении к опыту вслушивания в музыке ХХ века (Дж. Кейдж, Дж. Тенни, К. Кардью). Переопределяется понятие простого предмета как любого, что приобретает особую значимость в контексте теории клангов Дж. Тенни. Рассматривается проблематизация понятия проективного отношения на примере разрыва внутренних отношений проецируемого и ...
Added: November 20, 2016
Veselov E. A., Качество. Инновации. Образование 2016 № 5 С. 42–46
The article discusses the optimization problem of small-scale production of electronic equipment in the field of quality control of surface mount printed circuit boards. Explores the possibility of developing devices with a minimal set means for fixing the defects of the printhead and with the maximum efficiency of the inspection.
The text describes the algorithm for ...
Added: October 5, 2016
Lakshina V. V., Лапшина К. А., Финансы: теория и практика 2016 Т. 20 № 5 С. 105–114
Hedging is one of the most popular strategies for market risk management. Hedging is aimed at decreasing the volatility, or variability, of portfolio returns. The portfolio usually consists of the spot assets and hedging instruments. The latter can be represented by futures, options and over-the-counter assets such as forwards and swaps. While futures’ hedging is ...
Added: October 5, 2016
Yurii Burman, Shapiro B., / Series math "arxiv.org". 2016. No. 06935.
For a point p in a complex projective plane and a triple (g,d,l) of non-negative
integers we define a plane Hurwitz number of the Severi variety
W_{g,d,l} consisting of all reduced irreducible plane curves of
genus g and degree d+l having an l-fold node at p and at
most ordinary nodes as singularities at the other points. In the ...
Added: July 5, 2016
Gordin V. A., Сахарова Е. А., Профилактическая и клиническая медицина 2016 № 2(59) С. 14–20
The heatwave of July-August 2010 with an escort of noticeable air pollution (including smoke from peat fires) greatly affected the lives and health of the metropolis' residents. That is easily confirmed by mortality data and information about daily emergency calls. During this period strong peak may be observed both on general graphs and on particular ...
Added: March 9, 2016