bluuebunny/crossref_metadata_2025_split huggingface dataset:
СОСТОЯНИЕ И ПРОБЛЕМЫ ОБЕСПЕЧЕНИЯ КАЧЕСТВЕННЫМ ДИЗЕЛЬНЫМ ТОПЛИВОМ ГРУЗОВЫХ АВТОМОБИЛЕЙ
Authors: Тетерин Максим Федорович , Калимуллин Руслан Флюрович , Кулаков Александр Тихонович 
Published: December 2024

В статье освещается проблема присутствия на отечественном рынке автомобильных дизельных топлив его фальсификатов и суррогатов. Указаны причины стабильного спроса на такие топлива. Среди них: наличие парка устаревшей автомобильной техники с двигателями низкого экологического уровня; желание владельцев АЗС заработать на продаже таких, более дешевых, топлив, выдавая их за товарные автомобильные дизельные топлива; сложность выявления суррогатного и фальсифицированного топлива. Проведен анализ суррогатных автомобильных дизельных топлив и последствия их применения в двигателях современных автомобилей. Приведены результаты мониторинга показателей качества дизельного топлива в РФ на АЗС и в ходе эксплуатации автомобильной техники КАМАЗ с 2011 по 2023 годы. Установлено, что за этот период доля дизельного топлива экологического класса 5 при эксплуатации автомобилей выросла с 0 до 79,7%. Вместе с тем, наибольшие отклонения отмечены по показателю «содержание серы» - до 19,6%. Предлагается создать систему информационной поддержки водителей об АЗС, реализующих некачественную продукцию, тем самым существенно снизить вероятность заправки ею и уменьшить риски выхода из строя двигателя и его систем и простоя автомобиля в ремонте. Также, перспективно создание на автомобилях бортовых систем предупреждения о заправке некачественным топливом.
The article highlights the problem of the presence of counterfeits and surrogates on the domestic market of automobile diesel fuels. The reasons for the stable demand for such fuels are indicated. Among them: the presence of a fleet of outdated vehicles with engines of low environmental standards; the desire of gas station owners to make money by selling such cheaper fuels, passing them off as commercial automobile diesel fuels; difficulty in identifying surrogate and falsified fuel. The analysis of surrogate automotive diesel fuels and the consequences of their use in modern car engines is carried out. The results of monitoring diesel fuel quality indicators in the Russian Federation at gas stations and during the operation of KAMAZ vehicles from 2011 to 2023 are presented. It was found that during this period, the share of diesel fuel of ecological class 5 in the operation of cars increased from 0 to 79,7%. At the same time, the largest deviations were noted in the indicator "sulfur content" - up to 19,6%. It is proposed to create an information support system for drivers about gas stations selling low-quality products, thereby significantly reducing the likelihood of refueling with it and reducing the risks of engine failure and its systems and car downtime in repair. It is also promising to create on-board warning systems on cars about refueling with low-quality fuel.
ИССЛЕДОВАНИЕ ИЗМЕНЕНИЯ ТЕХНИЧЕСКОГО СОСТОЯНИЯ ПНЕВМАТИЧЕСКОЙ ПОДВЕСКИ ЛЕГКОВОГО АВТОМОБИЛЯ
Authors: Руденко Павел Геннадьевич , Катаргин Владимир Николаевич , Терских Виктор Михайлович 
Published: December 2024

Рассмотрена проблема эксплуатации легковых автомобилей Volkswagen Touareg, оборудованными пневматическими подвесками, в неблагоприятных климатических условиях. Влияние повышенной влажности и отрицательных температур, напрямую отражается на изменении заявленных эксплуатационных характеристик пневматической подвески, а отсутствие регламента технических воздействий приводит к снижению надежности системы пневмоподвески. Существующая модель технического обслуживания не позволяют оценить степень состояния пневматической системы, тем самым невозможно определить оптимальные сроки технического воздействия на систему пневмоподвески. Предложенная модель позволяет определить техническое состояние, предельные эксплуатационные значения, при которых будет рациональнее производить профилактические работы системы пневмоподвески.
This article is devoted to the problem of operating passenger cars equipped with air suspension in unfavorable climatic conditions. The influence of high humidity and negative temperatures directly affects changes in the declared operational characteristics of the air suspension, and the lack of regulations for technical influences leads to a decrease in the reliability of the air suspension system. The existing maintenance model does not allow assessing the condition of the pneumatic system, making it impossible to determine the optimal timing of technical impact on the air suspension system. The proposed model makes it possible to determine the technical condition and maximum operating values at which it would be more rational to carry out preventive maintenance of the air suspension system.
НАПРАВЛЕНИЯ, ИНСТРУМЕНТЫ И ЭФФЕКТИВНОСТЬ ЦИФРОВИЗАЦИИ В ТРАНСПОРТНО-ЛОГИСТИЧЕСКОЙ СФЕРЕ
Authors: Белов Юрий Дмитриевич , Бондарь Илья Владимирович , Костров Владимир Николаевич , Хохлов Александр Андреевич , Чеботарёв Владислав Стефанович 
Published: December 2024

Статья посвящена анализу цифровой трансформации транспортно-логистической отрасли, её влиянию на конкурентоспособность и устойчивое развитие. Авторы рассматривают ключевые тенденции цифровизации, включая внедрение смарт-контрактов, блокчейн, BigData и цифровых платформ, а также анализируют барьеры и факторы, замедляющие этот процесс в России. Особое внимание уделено национальной инициативе MariNet, направленной на создание интеллектуальной морской транспортной системы. В статье описаны перспективы и преимущества внедрения цифровых технологий в морскую логистику, включая снижение издержек, улучшение координации и повышение эффективности. Также представлена методика мониторинга зон рисков экономической устойчивости субъектов транспортно-логистической отрасли.
The information and communication gap in the transport and logistics chain can significantly impact cargo delivery parameters, cargo safety, and the timely fulfillment of commitments, supply, and transportation contracts. "Tsifra" changes the formats of supplies and transportation, ensuring the efficient operation of cargo movement channels. One of the most digitized sectors in both Russia and globally is transport logistics, where digital technologies are inseparable from this industry. The article is devoted to the analysis of the digital transformation of the transport and logistics sector, its impact on competitiveness, and sustainable development. The authors examine key digitalization trends, including the implementation of smart contracts, blockchain, Big Data, and digital platforms, while also analyzing the barriers and factors that slow down this process in Russia. Special attention is given to the national MariNet initiative, aimed at creating an intelligent maritime transport system. The article outlines the prospects and benefits of integrating digital technologies into maritime logistics, such as cost reduction, improved coordination, and increased efficiency. The methodology for monitoring risk areas related to the economic sustainability of entities in the transport and logistics sector is also presented.
ВОССТАНОВЛЕНИЕ СОВРЕМЕННОГО ГИБРИДНОГО АВТОМОБИЛЯ NISSAN NOTE E-POWER ПОСЛЕ ДТП
Authors: Козлюк Никита Юрьевич , Володькин Павел Павлович , Лазарев Владимир Александрович 
Published: December 2024

При незначительных столкновениях кузов легкового автомобиля подвергается деформации, поглощая кинетическую энергию удара. После любого по своим масштабам дорожно-транспортного происшествия, кузов автомобиля возможно восстановить в первоначальное состояние, используя знания о конструкции японских автомобилей и технологий их производства. Особое внимание при восстановлении автомобиля уделяется элементам активной и пассивной безопасности автомобиля, именно они направлены на предотвращение дорожно-транспортных происшествий, а также на снижение тяжести последствий при столкновении.
In minor collisions, the car body undergoes deformation, absorbing the kinetic energy of the impact. After any major traffic accident, it is possible to restore the car body to its original condition using knowledge about the design of Japanese cars and their production technologies. When restoring a car, special attention is paid to the elements of active and passive safety of the car, they are aimed at preventing road accidents, as well as reducing the severity of the consequences of a collision.
ПОЖАРНАЯ ОПАСНОСТЬ ПОДЗЕМНЫХ ПАРКИНГОВ, РИСК ВОЗНИКНОВЕНИЯ ПОЖАРОВ И ИХ ПОСЛЕДСТВИЙ
Authors: Фирсов Александр Георгиевич , Загуменнова Марина Викторовна 
Published: December 2024

Статья рассматривает исторические аспекты появления подземных паркингов их классификацию, устройство и пожарную опасность. Приведены результаты научных исследований пожарной опасности подземных паркингов за одиннадцать лет статистического наблюдения. Рассмотрены основные требования пожарной безопасности, предъявляемые нормативными правовыми документами к данным объектам защиты (надзора). На основе научных результатов исследований осуществлен расчет пожарных рисков для людей, риска причинения материального ущерба и риска уничтожения (повреждения) площади при пожаре в подземном паркинге. Полученные результаты исследований позволят минимизировать риски возникновения пожаров и опасности для людей при пожарах, а также улучшить пожарную безопасность подземных паркингов.
This work is devoted to the study of fire hazard of underground parking lots. The article discusses the historical aspects of their appearance, classification, structure and fire hazard. The results of statistical analysis of the situation with fires and their consequences for eleven years of statistical observation are presented. The main requirements of fire safety imposed by regulatory legal documents on these objects of protection (supervision) are considered. Based on the scientific results of the research, the risks of threat to human life and health, the risk of causing material damage and the risk of destruction (damage) of the area in case of a fire in the underground parking were calculated. The results of the research will minimize the risks of fires and the risks of threats to human life and health during fires and generally improve the fire safety of underground parking lots.
Подходы к отбору источников для цитирования в статьях российских исследователей медиакоммуникации
Authors: Анисимов И.В. , Макеенко М.И. , Трищенко Н.Д. 
Published: December 2024

Представлены результаты анализа списков литературы в статьях российских исследователей медиа, опубликованных в 2017 - 2021 гг. в журналах, индексируемых в Web of Science (всего 2011 статей). Выявлено пять условных моделей работы с источниками, которые практикуют российские авторы из разных академических организаций. Их совокупность описывает подходы к отбору источников, практикуемые российскими исследователями медиа. Обнаруженные различия в подходах могут свидетельствовать об отсутствии каких-либо стандартов внутри сообщества, при этом показатели взаимного и самоцитирования представителей ведущих академических организаций продемонстрировали, что сообщество тесно связано и в нем существует четкий центр из четырех организаций и периферия, которую формируют остальные университеты.
The study is based on the analysis of bibliographies of articles by Russian media researchers published between 2017 and 2021 in journals indexed in Web of Science (2011 articles). The research results revealed the existence of several models of citation practiced by Russian authors from different organizations, without evidence of any common citation patterns. The described models are hypothetical and rarely encountered in pure form; however, their combination describes approaches to source selection practiced by Russian media researchers. The detected differences in practices may indicate a generally low research culture and the absence of any standards within the community. Indicators of mutual and self-citation among representatives of leading academic organizations demonstrated that the community is closely interconnected, with a clear center comprising four organizations and a periphery consisting of regional universities.
Reinforcement Learning for Data-driven Workflows in Radio Interferometry. I. Principal Demonstration in Calibration
Authors: Kirk Brian M. , Rau Urvashi , Ramyaa Ramyaa 
Published: December 2024

Abstract
Radio interferometry is an observational technique used to study astrophysical phenomena. Data gathered by an interferometer require substantial processing before astronomers can extract scientific information from them. Data processing consists of a sequence of calibration and analysis procedures where choices must be made about the sequence of procedures as well as the specific configuration of the procedure itself. These choices are typically based on a combination of measurable data characteristics, an understanding of the instrument itself, an appreciation of the trade-offs between compute cost and accuracy, and a learned understanding of what is considered best practice. A metric of absolute correctness is not always available and validity is often subject to human judgment. The underlying principles and software configurations to discern a reasonable workflow for a given data set is the subject of training workshops for students and scientists. Our goal is to use objective metrics that quantify best practice, and numerically map out the decision space with respect to our metrics. With these objective metrics we demonstrate an automated, data-driven, decision system that is capable of sequencing the optimal action(s) for processing interferometric data. This paper introduces a simplified description of the principles behind interferometry and the procedures required for data processing. We highlight the issues with current automation approaches and propose our ideas for solving these bottlenecks. A prototype is demonstrated and the results are discussed.
Rotational Velocities and Radii Estimates of Low-mass Pre-main-sequence Stars in NGC 2264
Authors: Gray Laurin M. , Rhode Katherine L. , Hamilton-Drager Catrina M. , Picard Tiffany , Rebull Luisa M. 
Published: December 2024

Abstract
Investigating the angular momentum evolution of pre-main-sequence (PMS) stars provides important insight into the interactions between Sun-like stars and their protoplanetary disks, and the timescales that govern disk dissipation and planet formation. We present projected rotational velocities (v sin i values) of 254 T Tauri stars (TTSs) in the ∼3 Myr old open cluster NGC 2264, measured using high-dispersion spectra from the WIYN 3.5 m telescope’s Hydra instrument. We combine these with literature values of temperature, rotation period, luminosity, disk classification, and binarity. We find some evidence that weak-lined TTSs may rotate faster than their classical TTS counterparts and that stars in binary systems may rotate faster than single stars. We also combine our v sin i measurements with rotation period to estimate the projected stellar radii of our sample stars, and then use a maximum likelihood modeling technique to compare our radii estimates to predicted values from stellar evolution models. We find that starspot-free models tend to underestimate the radii of the PMS stars at the age of the cluster, while models that incorporate starspots are more successful. We also observe a mass dependence in the degree of radius inflation, which may be a result of differences in the birth-line location on the HR diagram. Our study of NGC 2264 serves as a pilot study for analysis methods to be applied to four other clusters ranging in age from 1−14 Myr, which is the timescale over which protoplanetary disks dissipate and planetary systems begin to form.
Metal-strong Inflows at the Outer-galactic-scale of a Quasar
Authors: Tian Qiguo , Hao Lei , Zhou Yipeng , Shi Xiheng , Ji Tuo , Jiang Peng , Lin Lin , Zheng Zhenya , Zhou Hongyan 
Published: December 2024

Abstract
We present an analysis of the absorption-line system in the Very Large Telescope/Ultraviolet and Visual Echelle Spectrograph spectrum at a redshift of z
a = 3.1448 associated with the quasar SDSS J122040.23+092326.96, whose systematic redshift is z
e = 3.1380 ± 0.0007, measured from the Hβ+[O iii] emission lines in our newly acquired NIR P200/TripleSpec data. This absorbing system, detected in numerous absorption lines, including the N v, N iii, C iv, C iii, Si iv, Si iii, and H i Lyman series, can be resolved into seven kinematic components with redshifted velocities ranging from 200 to 900 km s−1. The high-ionization N v doublet detected and the rather narrow Lyman series measured (b ≈ 14 km s−1) suggest that the absorption gas is photoionized, possibly by the quasar. A low density is inferred by the fact that N iii
λ989.80 is significantly detected while N iii*λ991.57 (

log

n

c

=
3.3

cm

−
3

) is undetectably weak. A firm lower limit of a solar value to the abundance of the gas can be set based on the measurements of Si iv and H i column densities, as first proposed by F. Hamann. Detailed photoionization simulations indicate that T1, and possibly the absorber as a whole, has metallicities of Z ∼ 1.5 − 6.0 Z
☉, and is located at ∼15 kpc from the quasar nucleus. The metal-strong absorption inflows at the outskirt of the quasar host galaxy most likely originated in situ and were driven by stellar processes, such as stellar winds and/or supernova explosions. Such a relatively rare system may hold important clues to understanding the baryonic cycling of galaxies, and more cases could be picked out using relatively strong Si iv and weak Lyman absorption lines.
Leptohadronic Scenarios for TeV Extensions of Gamma-Ray Burst Afterglow Spectra
Authors: Klinger Marc , Yuan 袁 Chengchao 成超 , Taylor Andrew M. , Winter Walter 
Published: December 2024

Abstract
Recent multiwavelength observations of gamma-ray burst afterglows observed in the TeV energy range challenge the simplest synchrotron self-Compton (SSC) interpretation of this emission and are consistent with a single power-law component spanning over 8 orders of magnitude in energy. To interpret this generic behavior in the single-zone approximation without adding further free parameters, we perform an exhaustive parameter space study using the public, time-dependent, multimessenger transport software AM

3
. This description accounts for the radiation from nonthermal protons and the leptohadronic cascade induced by pp and p
γ interactions. We summarise the main scenarios that we have found (SSC, Extended-syn, Proton-syn, pp-cascade, and pγ-cascade) and discuss their advantages and limitations. We find that possible high-density environments, as may be typical for surrounding molecular cloud material, offer an alternative explanation for producing flat hard (source) spectra up to and beyond energies of 10 TeV.
Binary Stars Approaching Supermassive Black Holes: Tidal Breakup, Double Stellar Disruptions, and Stellar Collision
Authors: Yu Fangyuan , Lai Dong 
Published: December 2024

Abstract
In galactic centers, stars and binaries can be injected into low-angular-momentum orbits, resulting in close encounters with the central supermassive black hole (SMBH). Previous works have shown that under different conditions, such close encounters can lead to the breakup of the binary, disruptions of both stars, and collision between the stars. We use three-body scattering experiments to characterize these different outcomes for a range of system parameters, such as β

b
, the ratio of the binary tidal radius to the pericenter distance r

p
to the SMBH, and the compactness of the binary. We focus on stellar collisions, which occur for a range of β

b
s, with a few to tens of percent probabilities (depending on the compactness of the binary). In gentle encounters (β

b
≲ 1), stellar collisions occur after the pericenter passage, and the merger remnants are typically ejected from the SMBH at a small velocity. In deep encounters (β

b
≳ 1), collisions occur near the pericenter, with the impact velocity a few times the escape velocity of the star, and the merger remnants are typically bound to the SMBH. We suggest that stellar collisions induced by binary–SMBH encounters may produce exotic stars in galactic centers, trigger accretion flares onto the SMBH due to the mass loss, and result in bound merger remnants causing repeated partial tidal disruption events.
Solar Wind–Magnetosphere Coupling by the Kelvin–Helmholtz Instability at Mercury
Authors: Lai S. H. , Wang Y.-C. , Yang Y.-H. , Ip W.-H. 
Published: December 2024

Abstract
The Kelvin–Helmholtz instability (KHI) has been considered important in the energy transfer and momentum coupling between the solar wind and planetary magnetospheres. To explore this issue, we employ a two-dimensional magnetohydrodynamic simulation to study the nonlinear evolution of the KHI at Mercury’s magnetopause using the parameters derived from a global hybrid simulation of MESSENGER’s first flyby of Mercury. Due to the absence of comprehensive plasma observations of Mercury’s magnetosphere, two scenarios are considered: one with a heavily loaded magnetosphere and the other with a weakly loaded magnetosphere, to demonstrate the development of the KHI under distinct levels of magnetospheric plasma density. Our results indicate that the KHI with a heavily loaded magnetosphere leads to a significantly more turbulent magnetopause and grows into the nonlinear fast-mode plane waves expanding away from the magnetopause. The momentum and energy flux quantified from our simulations reveal that the KHI with a heavily loaded magnetosphere can efficiently transport momentum and energy away from the magnetopause in the presence of the fast-mode plane waves. In the cases with a heavily loaded magnetosphere, observed in the inner magnetosphere, the momentum flux can reach 10−3 nPa, i.e., about 0.5% of the initial solar-wind dynamic pressure; the energy flux can be

1

0

-
2

erg

cm

-
2

s

-
1

,

and the energy density is about 1.5%–3.0% of the initial solar-wind energy. In the cases with a very thin magnetosphere, observed away from the magnetopause, the momentum flux is negligible and the energy flux is smaller without the presence of the fast-mode plane waves in the magnetosphere.
COSMOS2020: Disentangling the Role of Mass and Environment in Star Formation Activity of Galaxies at 0.4 < z < 4
Authors: Taamoli Sina , Nezhad Negin , Mobasher Bahram , Manesh Faezeh , Chartab Nima , Weaver John R. , Capak Peter L. , Casey Caitlin M. , Gozaliasl Ghassem , Heintz Kasper E. , Ilbert Olivier , Kartaltepe Jeyhan S. , McCracken Henry J. , Sanders David B. , Scoville Nicholas , Toft Sune , Watson Darach 
Published: December 2024

Abstract
The role of internal and environmental factors in the star formation activity of galaxies is still a matter of debate, in particular at higher redshifts. Leveraging the most recent release of the COSMOS catalog, COSMOS2020, as well as density measurements from our previous study, we disentangle the impact of environment and stellar mass on the star formation rate (SFR) and specific SFR (sSFR) of a sample of ∼210,000 galaxies within a redshift range of 0.4 < z < 4, and present our findings in three cosmic epochs: (1) out to z ∼ 1, the average SFR and sSFR decline in extremely dense environments and at the high-mass end of the distribution, which is mostly due to the presence of the massive quiescent population; (2) at 1 < z < 2, the environmental dependence diminishes, while mass is still the dominant factor in star formation activity; and (3) beyond z ∼ 2, our sample is dominated by star-forming galaxies and we observe a reversal of the trends seen in the local Universe—the average SFR increases with increasing environmental density. Our analysis shows that both environmental and mass quenching efficiencies increase with stellar mass at all redshifts, with mass being the dominant quenching factor in massive galaxies compared to environmental effects. At 2 < z < 4, negative values of environmental quenching efficiency suggest that the fraction of star-forming galaxies in dense environments exceeds that in less-dense regions, likely due to the greater availability of cold gas, higher merger rates, and tidal effects that trigger star formation activity.