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Численное исследование обтекания наконечников костяных стрел с городища Черновское I
Вестник Пермского университета. Серия: Физика. 2025. № 2. С. 66–74.
Мингалев С. В., Mingalev V. V.
The article is devoted to the application of computational fluid dynamics to the study of bone arrowheads from the Chernovskoye I settlement (2nd-7th centuries AD) in the Krasnokamsk urban district of the Perm region. The obtained values of the form drag coefficients allow dividing the arrowheads into two groups: with values from 0.122 to 0.131 and with values from 0.161 to 0.221 (the incoming flow velocity is 50 m/s). The second group includes arrowheads with visible defects, for which the value of this aerodynamic coefficient is greater than 1.78. At the same time, since asymmetry and curvature (interpreted as defects) change continuously, the above boundary cannot be precisely fixed. In order to assess the influence of the aerodynamic wake behind the arrowhead (which is absent when it is connected to the shaft), the normalized drag force acting on the arrowhead up to the midsection was also calculated. The values of this quantity show the same relationship with the presence of defects in the tip as in the case of the form drag coefficients. At the same time, the division into two groups is not preserved. Thus, the value of the form drag coefficient can be used mainly for ranking tips by the quality of their manufacture. Also in this study, an assessment was made of the error in determining the values of the form drag coefficient, associated with the fact that the accuracy of the results obtained by computational gas dynamics methods strongly depends on how well the computational grid resolves the flow and the surface of the streamlined body; in this study, for an incident flow velocity of 50 m/s, its average value was 2%, and the maximum was 7%.
Language:
Russian
Nikolay Sarkisyan, Revolutionary Russia 2025 Vol. 38 No. 1 P. 1–23
This article examines the emergence and evolution of revolutionary museology in Imperial Russia between 1901 and 1917, addressing a previously understudied aspect of revolutionary culture. By analysing four successive attempts to establish revolutionary museums – the Russian Museum in Geneva (1901–1902), Maxim Gorky’s initiative on Capri (1912–1913), Vladimir Burtsev’s various projects, and the Petrograd House ...
Added: October 14, 2026
Dmitriev A., Kornilov V., Batienkov R., Lecture Notes in Civil Engineering 2026 Vol. 886 P. 249–255
Numerous studies have provided compelling evidence that the probability distribution of avalanche sizes follows a power law, and that 1/f noise is present in the stochastic dynamics of landslides. We present a theoretical explanation of these phenomena within the framework of self-organized criticality theory, proposing a discrete-time model in the form of a sandpile cellular ...
Added: October 13, 2026
Dmitriev A., Shulman I., Lebedev A., Studies in Computational Intelligence 2026 Vol. 1265 P. 266–273
A discrete-time model is presented for the self-organization of the X/Twitter social network to the edge of a phase transition, characterized by avalanche-like propagation of information in the network. The model is based on the analogy between the critical dynamics of the X social network and sandpile cellular automata with Manna rule on the Chung-Lu ...
Added: October 13, 2026
Arutyunov K., Kharitonov I. A., Petrosyants K. O., JETP Letters 2026 Vol. 124 No. 6 P. 1–16
Superconducting properties of metallic micro- and nanowires can be entirely different from those of bulk superconductors. Of particular interest is the nonequilibrium current-induced state of a quasi-one-dimensional superconducting channel. The most interesting phenomenon here is the stepped I–V characteristic, explained by a process known as phase slip center activation. If the origin of such step-like ...
Added: October 13, 2026
Makarov D. M., Kalikin N., Fashchevsky K. A. et al., Electrochimica Acta 2026 Vol. 579 Article 150159
Machine learning (ML) has become a powerful tool for accelerating the development of carbon-based supercapacitors;
however, most published models assume that a single predictive framework can describe both conventional
porous carbons and hybrid carbon electrodes. Here, we test this assumption using a comprehensive
benchmark dataset and an extended literature-curated dataset enriched with synthesis- and electrolyte-related
descriptors. Three ML algorithms ...
Added: October 13, 2026
ИДВ РАН, 2026.
This paper addresses the issue perceiving the national Vietnamese costume as a tool of cultural representation in the context of official state events held in Vietnam and abroad. The study focuses on specific cases of protocol visits, meetings, forums, and beauty contests, where the ao dai and other types and elements of national clothing are ...
Added: October 12, 2026
Махлуф М., Ozhegov R., Elezov M. et al., Фотоника 2026 Vol. 20 No. 6 P. 414–423
This paper compares the ranging precision of direct time-of-flight (dToF) and non-line-of-sight (NLOS) LiDAR architectures, both using a superconducting nanowire single-photon detector (SNSPD). Both systems operate at 1550 nm with a 50 ps pulsed laser and time-correlated single-photon counting (TCSPC). The dToF configuration achieved approximately 100 µm precision at 10 m, while the NLOS configuration achieved 500 µm precision for ...
Added: October 12, 2026
Dadykina M., Известия Российской академии образования 2026 Т. 2 № 74 С. 50–65
In modern economic law, the concept of "business entity" refers to an individual or legal entity (or association) en- gaged in economic activity for profit. Since the concept of a legal entity in Russia only fully developed in the late 18th century, the use of this term in the context of the Russian economy of ...
Added: October 12, 2026
Абейсекера С. Х., Обсерватория культуры 2026 Т. 23 № 2 С. 176–188
This article explores the iconography and artis tic features of the monumental paintings of Sigiriya, a Sri Lankan architectural and landscape monument, mean ing “lion rock” in Sinhalese. On the fl at summit of a rock plateau, rising almost 200 meters above the surround ing plain in the very center of the island, in the ...
Added: June 12, 2026
Druzhinina I., Абрамова А. Н., Археология евразийских степей 2023 № 6 С. 334–346
The publication presents the scientific results of a comprehensive archaeological and paleoanthropological analysis of the remains of a warrior from an elite burial site of the 14th century near the city of Krymsk (Krasnodar Krai). ...
Added: June 9, 2026
Чхаидзе В. Н., Druzhinina I., Античная древность и средние века 2023 Т. 51 С. 168–181
The work, based on a comprehensive analysis of the latest archaeological and paleoanthropological materials from excavations in the capital of Western Alania, a medieval state in the North Caucasus, raises the question of the ethnocultural composition of the city's elite, the level and quality of life of representatives of the urban elite, their religious, professional ...
Added: June 9, 2026
Антиква, 2026.
Archaeology and history of Bosporus ...
Added: February 19, 2026
Zinchenko S., Колганова Г. Ю., Искусствознание 2025 № 3 С. 54–75
The purpose of the study is to clarify the attribution of the bracelet from the collection of the Pushkin Pushkin State Museum of Fine Arts. The detailed description made it possible to determine the circle of the most relevant analogies. For the convenience of work, they were divided into three groups. The first includes objects ...
Added: December 18, 2025
Svoyski Y., Savelyev A., Дынин М. Д. et al., Археология евразийских степей 2025 № 6 С. 284–306
One of the most important tasks of studying epigraphic materials is the exact reproduction of an inscription and its carrier for research and subsequent publication. This problem is universal for epigraphy as a scientific discipline in general, and especially relevant for inscriptions whose study has remained fragmentary and for which the problem of compiling a ...
Added: December 11, 2025
М., Краснодар: Центр палеонтологических исследований, Традиция, 2025.
Сборник статей содержит материалы коференции по археологии Западного Кавказа и сопредельных территорий, представленных на «XII Анфимовских чтениях», прошедших в Горячем Ключе 3–6 ноября 2025 г. В разделах издания отражены секции форума, который охватывает периоды от каменного века и эпохи бронзы до позднего средневековья и Нового времени. Опубликованы результаты Круглого стола «Translatio imperii»: христианские древности». Также ...
Added: December 10, 2025
М.: ИА РАН, 2025.
Сборник состоит из 22 самых разнообразных по тематике и хронологическим периодам работ. Исследовательские и публикационные статьи разбиты на пять разделов, организованных по территориально-хронологическому принципу: Причерноморье: бронзовый век, Античность и Средневековье; эпоха бронзы в Волго-Окском междуречье; Сибирь и Центральная Азия; Древнерусское Средневековье и Новое время; Юго-Восточная Прибалтика: от преистории до орденского времени. Сборник дает хорошее представление ...
Added: November 30, 2025
М.: Древности севера, 2025.
This collection of articles was prepared for the anniversary of the renowned Russian archaeologist and historian, Academician Nikolai Andreevich Makarov. The book includes articles on archaeology, history, numismatics, and the art of medieval Rus', written by colleagues, friends, students, and followers of the celebrated scholar. Dedicated to current issues in the medieval archaeology of Eastern ...
Added: November 23, 2025
Shulyakov L., Вестник древней истории 2025 Т. 85 № 4 С. 881–914
The idea that God cannot be depicted is one of the important features of biblical monotheism, which has influenced the religious traditions of Judaism, Christianity, and Islam. However, the Bible and biblical archaeology do not provide a clear answer to the question of when the prohibition of any images of deities was finally established in ...
Added: November 5, 2025
Goffriller M., Arzhantseva I., Haerke H., Ancient Civilizations from Scythia to Siberia 2023 Vol. 29 No. 1 P. 133–157
The article is devoted to the typology and evolution of fortified settlements of the Dzhety-asar culture of the 1st millennium AD in the Eastern Aral Sea region. ...
Added: July 1, 2025
Arzhantseva I., , in: Environmental Humanities in Central Asia. Relations Between Extraction and Interdependence.: L., NY: Routledge, 2023. P. 149–174.
The chapter is devoted to the water policy of the Soviet Union in Central Asia and the participation of archaeologists and ethnographers in it. ...
Added: July 1, 2025
Irina Arkadevna Arzhantseva, Haerke H., , in: Reimagining the Silk Roads: Interactions and Perceptions Across Eurasia.: L.: Routledge, 2025. Ch. 3/13 P. 186–199.
The chapter describes the early medieval town of Dzhankent as one of the possible trading points on the Northern section of the Great Silk Road. ...
Added: July 1, 2025
L.: Routledge, 2025.
The book is devoted to various aspects of the study of the Great Silk Road and its influence on the history and archeology of Eurasia. ...
Added: July 1, 2025
Arzhantseva I., Солод Ю. А., [б.и.], 2025.
The archaeological album was created based on unique materials from the archive and collection of the N.N. Miklouho-Maclay Institute of Ethnology and Anthropology of the Russian Academy of Sciences, collected by Russian scientists during the Khorezm expedition, which operated from 1937 to 1997 on the territory of three Soviet Central Asian republics - Uzbekistan, Kazakhstan ...
Added: June 30, 2025
Batalova V., Sannikov P., Pereskokov M. et al., Vegetation History and Archaeobotany 2025 Vol. 34 P. 439–458
The Ural Mountains represent a distinctive bioecological and climatic boundary between Europe and Asia, simultaneously uniting them through cultural, ethnic, and economic ties throughout history. To investigate these complex human-environment interactions during the last ~ 10,000, we obtained a peat core Shabunichi-1 and analyzed it using AMS radiocarbon dating, loss-on-ignition, pollen, non-pollen palynomorphs, micro- and ...
Added: June 9, 2025