bluuebunny/crossref_metadata_2025_split huggingface dataset:
THE ROLE OF ECONOMIC THEORY IN A TECHNICAL UNIVERSITY
Authors: Азиева Р.Х. , Гишкаева Л.Л. , Таймасханов Х.Э. 
Published: September 2021

Независимо от общепризнанной ценности базовых экономических дисциплин, в особенности экономической теории, ее преподавание как непрофильной в технических вузах в современных условиях имеет свое проблемное поле, связанное с выбором единства теоретических, методических и организационных вопросов.В связи с этим в работе аргументирована целесообразность и важность преподавания экономической теории студентам технических специальностей и предложены основные направления и пути решения поставленных проблем.
Regardless of the generally recognized value of basic economic disciplines, especially economic theory, teaching it as a non-core discipline in technical universities in modern conditions has its own problem field associated with the choice of the unity of theoretical, methodological and organizational issues.In this regard, in this work the expediency and importance of teaching economic theory to students of technical specialties is argued and the main directions and ways of solving the problems posed are proposed.
GROZNENSKY SCHOOL OF ENERGY AND RESOURCE SAVING IN THE PRODUCTION OF BUILDING MATERIALS: REALITIES AND DEVELOPMENT PROSPECTS
Authors: Муртазаев С-А.Ю. , Саламанова М.Ш. , Сайдумов М.С. , Аласханов А.Х. 
Published: September 2021

В работе представлены результаты работы Грозненской научной школы энерго- и ресурсосбережения в производстве строительных материалов, полученные за последние годы. Приведена информация о научном коллективе, занимающейся проблемами энерго- и ресурсосбережения в производстве строительных материалов, изделий и конструкций.
The paper presents the results of the work of the Grozny scientific school of energy and resource conservation in the production of building materials, obtained in recent years. Information about the research team dealing with the problems of energy and resource conservation in the produc- tion of building materials, products and structures is given.
COMPOSITE MATERIALS MODIFIERS BASED ON CEMENT
Authors: Аларханова З.З. , Батаев Д. К-С. 
Published: September 2021

В статье рассмотрено одно из основных направлений развития наноинженерии строительных материалов. Модификация композиционных материалов на основе цемента поликарбоксилатами. Рассмотрены особенности механизма действия поликарбоксилатных суперпластификаторов на свойства бетона в сравнении с традиционными пластифицирующими добавками на основе сульфированных нафталини или меламинформальдегидных соединений. Представлены перспективы развития наноинженерии в модификации материалов на основе цемента.
The article discusses one of the main directions of development of nanoengineering of building materials. Modification of cement-based composite materials with polycarboxylates. The features of the mechanism of action of polycarboxylate superplasticizers on the properties of concrete are considered in comparison with traditional plasticizing additives based on sulfonated naphthalene- and or melamine-formaldehyde compounds. Prospects for the development of nanoengineering in the modification of cement-based materials are presented.
10 ARCHITECTURAL INNOVATION TECHNOLOGIES THAT ARCHITECTS SHOULD KNOW
Authors: Даудова Ф.Х. 
Published: September 2021

В наш цифровой век появляются бесчисленные архитектурные технологии, которые меняют наш дизайн. В то время как некоторые из этих креативных технологий довольно новые, другие относительно старые, но стали свидетелями огромного развития в последнее время. Эти технологии неизбежно изменят облик архитектуры, какой мы ее знаем. Итак, вместо того чтобы бороться с неизбежным, почему бы не принять его и не извлечь из него максимум пользы? В этой статье мы рассмотрим 10 креативных технологий, которые оказывают огромное влияние на современную архитектуру.
In our digital age, countless architectural technologies are emerging that are changing our design. While some of these creative technologies are fairly new, others are relatively old, but have witnessed tremendous development recently. These technologies will inevitably change the face of architecture as we know it. So, instead of fighting the inevitable, why not embrace it and make the most of it? In this article, we will look at 10 creative technologies that have a huge impact on modern architecture.
INCREASING THE EFFICIENCY OF DEEP HIGH-TEMPERATURE WELLS
Authors: Газабиева З.Х. , Дачаев М. А. , Халадов А.Ш. , Азимов С-А. А. 
Published: September 2021

Повышение эффективности эксплуатации глубоких высокотемпературных скважин характеризуется рядом технологических особенностей. Известно, что в подобных неоднородных коллекторах интервалы дренирования составляют небольшую величину в пределах 30-40 % от вскрытой толщины пласта.
Improving the operational efficiency of deep high-temperature wells is characterized by a number of technological features. It is known that in such heterogeneous reservoirs, drainage intervals are small, within 30-40% of the penetrated formation thickness
SELF-FULFILLING MESH-NETWORKS FOR RESORT AREAS
Authors: Шудуева З.А. , Хаджиева Л.К. , Изнаурова Ф.А. 
Published: September 2021

В статье рассматриваются особенности самоорганизующихся mesh-сетей, приводятся определения и основные характеристики, а также обзор уже существующих mesh-сетей в мире. Обсуждаются главные вопросы по развертыванию mesh-сети для курортных зон: проблемы при создании и их решение.
The article discusses the features of self-organizing mesh networks, provides definitions and main characteristics, as well as an overview of existing mesh networks in the world. The main issues on the deployment of a mesh network for resort areas are discussed: problems during creation and their solution.
USE OF SECONDARY RAW MATERIALS OF THE CHECHEN REPUBLIC IN COMPOSITIONS OF HIGH STRENGTH SELF-COMPACTING CONCRETE
Authors: Алиев С.А. , Абуханов А.З. , Муртазаев И.С-А. , Бахалаев Ч.Ю. , Гайрбеков Х.С-А. 
Published: September 2021

Индустриальные методы возведения зданий и сооружений в условиях современного производства прежде всего предполагают использование высокоподвижных удобоукладываемых бетонных смесей с использованием высокотехнологичных материалов, оборудования и механизмов. Строительство высотных комплексов во всем мире требует комплексного подхода в решении проблем технологии и организации производства работ, одновременно в рамках которого решаются задачи выбора наиболее рациональных несущих конструктивных элементов зданий. Это прежде всего комплексные конструкции, где широко используются современные составы самоуплотняющихся высокопрочных бетонов.
Industrial methods for the construction of buildings and structures in the conditions of modern production primarily involve the use of highly mobile, layered concrete mixtures using high-tech materials, equipment and mechanisms. The construction of high-rise complexes all over the world requires an integrated approach to solving the problems of technology and organization of work, at the same time, within the framework of which the tasks of choosing the most rational load-bearing structural elements of buildings are solved. These are, first of all, complex structures, where modern compositions of self-compacting high-strength concrete are widely used.
Evaluation of the effectiveness of chemical disinfection agents against the Epstein-Barr virus
Authors:   Interregional Department No. 1 of the FMBA of Russia, Solomay Tatiana Valerievna , Isayeva Elena Ivanovna ,   FGBU "National Research Center of Epidemiology and Microbiology named after Honorary Academician N.F. Gamaleya" of the Ministry of Health of the Russian Federation, Vetrova Elizaveta Nikolaevna ,   FGBU "National Research Center of Epidemiology and Microbiology named after Honorary Academician N.F. Gamaleya" of the Ministry of Health of the Russian Federation, Chernyshova Alyona Igorevna ,   FGBU "National Research Center of Epidemiology and Microbiology named after Honorary Academician N.F. Gamaleya" of the Ministry of Health of the Russian Federation, Semenenko Tatyana Anatolievna ,   I.M. Sechenov First Moscow State Medical University (Sechenov University), Panteleyeva Lyudmila Grigoryevna ,   Scientific Research Disinfectology Institute of Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing
Published: September 2021

The widespread spread of infection caused by the Epstein-Barr virus (EBV), the lack of registered vaccines, the possibility of implementing a transmission mechanism in medical organizations, determine disinfection as the main method of preventing this disease. The aim is to evaluate the effectiveness of chemical disinfection agents approved for use in the Russian Federation in relation to EBV-infected cell culture with quantitative DNA determination by polymerase chain reaction. Working solutions of complex disinfectants used for the treatment of medical devices were introduced into samples of EBV-infected B-cell culture in the concentration and exposure specified in the instructions (0.1 %; 60 min.). Then, the quantitative determination of the EBV DNA was performed. Chlorine-containing disinfectants, combined preparations based on aldehydes and guanidines per hour, as well as guanidines per hour and triamines, provided complete destruction of genetic material, while the combination of H with triamines led only to a decrease in the concentration of EBV DNA from 5.0 · 106 copies/ml to 2.4 · 106 copies/ml (by 2.1 times), which may not be enough to fully ensure biological safety when processing medical devices (sensors of ultrasound diagnostics devices, etc.), which are not subject to sterilization. The inability to determine the viability of EBV after treatment with disinfectants due to the initial presence of the virus in the B-cell culture makes the molecular biological method the only acceptable one at this stage and requires the search for new models – cell cultures intact to EBV or biological objects (laboratory animals). Keywords: Epstein-Barr virus, disinfection, quaternary ammonium compounds, triamines, aldehydes, guanidines, active chlorine releasing agents.
Spitzer Phase-curve Observations and Circulation Models of the Inflated Ultrahot Jupiter WASP-76b
Authors: May Erin M. , Komacek Thaddeus D. , Stevenson Kevin B. , Kempton Eliza M.-R. , Bean Jacob L. , Malik Matej , Ih Jegug , Mansfield Megan , Savel Arjun B. , Deming Drake , Desert Jean-Michel , Feng Y. Katherina , Fortney Jonathan J. , Kataria Tiffany , Lewis Nikole , Morley Caroline , Rauscher Emily , Showman Adam 
Published: September 2021

Abstract
The large radii of many hot Jupiters can only be matched by models that have hot interior adiabats, and recent theoretical work has shown that the interior evolution of hot Jupiters has a significant impact on their atmospheric structure. Due to its inflated radius, low gravity, and ultrahot equilibrium temperature, WASP-76b is an ideal case study for the impact of internal evolution on observable properties. Hot interiors should most strongly affect the nonirradiated side of the planet, and thus full phase-curve observations are critical to ascertain the effect of the interior on the atmospheres of hot Jupiters. In this work, we present the first Spitzer phase-curve observations of WASP-76b. We find that WASP-76b has an ultrahot dayside and relatively cold nightside with brightness temperatures of 2471 ± 27 K/1518 ± 61 K at 3.6 μm and 2699 ± 32 K/1259 ± 44 K at 4.5 μm, respectively. These results provide evidence for a dayside thermal inversion. Both channels exhibit small phase offsets of 0.68 ± 0.°48 at 3.6 μm and 0.67 ± 0.°2 at 4.5 μm. We compare our observations to a suite of general circulation models (GCMs) that consider two endmembers of interior temperature along with a broad range of frictional drag strengths. Strong frictional drag is necessary to match the small phase offsets and cold nightside temperatures observed. From our suite of cloud-free GCMs, we find that only cases with a cold interior can reproduce the cold nightsides and large phase-curve amplitude at 4.5 μm, hinting that the hot interior adiabat of WASP-76b does not significantly impact its atmospheric dynamics or that clouds blanket its nightside.
Speckle Interferometry of Nearby Multiple Stars. II. 2007–2020 Positional Measurements and Orbits of Sixteen Objects
Authors: Mitrofanova A. , Dyachenko V. , Beskakotov A. , Balega Yu. , Maksimov A. , Rastegaev D. 
Published: September 2021

Abstract
Long-term monitoring at the 6 m telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences made it possible to improve the orbits of 15 objects (HIP 689, HIP 3951, HIP 10438, HIP 43948, HIP 69962, HIP 95995, HIP 102029, HIP 102357, HIP 104383, HIP 105947, HIP 106255, HIP 108917, HIP 111546, HIP 113726, HIP 114922) and construct an orbital solution for HIP 65327 for the first time. Observations have been carried out since 2007; that is, the accumulated data correspond to an interval of 13 yr. As a result, most of the orbits were classified as “accurate” using the qualitative criteria by Worley & Heintz. A comparison of the mass sums and masses of the components calculated by two independent methods was made for objects with orbital solutions. The Gaia EDR3 parallax was used to obtain the fundamental parameters, as well as the Hipparcos and Gaia DR2 parallaxes.
GRIT: A Package for Structure-Preserving Simulations of Gravitationally Interacting Rigid Bodies
Authors: Chen Renyi , Li Gongjie , Tao Molei 
Published: September 2021

Abstract
The spin-orbit coupling of planetary systems plays an important role in the dynamics and habitability of planets. However, symplectic integrators that can accurately simulate not only how orbit affects spin but also how spin affects orbit have not been constructed for general systems. Thus, we develop symplectic Lie-group integrators to simulate systems consisting gravitationally interacting rigid bodies. A user friendly package (GRIT
3

3

https://github.com/GRIT-RBSim/GRIT

) is provided and external forcings, such as tidal interactions, are also included. As a demonstration, this package is applied to Trappist-I. The results show that the differences in transit-timing variations due to spin–orbit coupling could reach a few min in 10-year measurements, and strong planetary perturbations can push Trappist-I f, g and h out of the synchronized states.
SN 2017fgc: A Fast-expanding Type Ia Supernova Exploded in Massive Shell Galaxy NGC 474
Authors: Zeng Xiangyun , Wang Xiaofeng , Esamdin Ali , Pellegrino Craig , Burke Jamison , Stahl Benjamin E. , Zheng WeiKang , Filippenko Alexei V. , Howell D. Andrew , Sand D. J. , Valenti Stefano , Mo Jun , Xi Gaobo , Liu Jialian , Zhang Jujia , Li Wenxiong , Iskandar Abdusamatjan , Zhang Mengfan , Lin Han , Sai Hanna , Xiang Danfeng , Wei Peng , Zhang Tianmeng , Reichart D. E. , Brink Thomas G. , McCully Curtis , Hiramatsu Daichi , Hosseinzadeh Griffin , Jeffers Benjamin T. , Ross Timothy W. , Stegman Samantha , Wang Lifan , Zhang Jicheng , Ma Shuo 
Published: September 2021

Abstract
We present extensive optical photometric and spectroscopic observations of the high-velocity (HV) Type Ia supernova (SN Ia) 2017fgc, covering the phase from ∼12 days before to ∼389 days after maximum brightness. SN 2017fgc is similar to normal SNe Ia, with an absolute peak magnitude of

M

max

B

≈

−19.32 ± 0.13 mag and a post-peak decline of Δm
15(B) = 1.05 ± 0.07 mag. Its peak bolometric luminosity is derived as (1.32 ± 0.13) × 1043 erg s−1, corresponding to a 56Ni mass of 0.51 ± 0.03 M
⊙. The light curves of SN 2017fgc are found to exhibit excess emission in the UBV bands in the early nebular phase and pronounced secondary shoulder/maximum features in the RrIi bands. Its spectral evolution is similar to that of HV SNe Ia, with a maximum-light Si ii velocity of 15,000 ± 150 km s−1 and a post-peak velocity gradient of ∼120 ± 10 km s−1 day−1. The Fe ii and Mg ii lines blended near 4300 Å and the Fe ii, Si ii, and Fe iii lines blended near 4800 Å are obviously stronger than those of normal SNe Ia. Inspecting a large sample reveals that the strength of the two blends in the spectra, and the secondary peak in the i/r-band light curves, are found to be positively correlated with the maximum-light Si ii velocity. Such correlations indicate that HV SNe Ia may experience more complete burning in the ejecta and/or that their progenitors have higher metallicity. Examining the birthplace environment of SN 2017fgc suggests that it likely arose from a stellar environment with young and high-metallicity populations.
Detection of a Low-frequency Quasi-periodic Oscillation in the Soft State of Cygnus X-1 with Insight-HXMT
Authors: Yan Zhen , Rapisarda Stefano , Yu Wenfei 
Published: September 2021

Abstract
We report the detection of a short-lived narrow quasi-periodic oscillation (QPO) at ∼88 mHz in an Insight-HXMT exposure during the soft state of the persistent black hole high-mass X-ray binary Cygnus X-1. This QPO is significantly detected in all three instruments of Insight-HXMT, so in the broad energy range 1–250 keV. The fractional rms of the QPO does not show significant variations above 3 keV (∼5%) while it decreases at lower energy (∼2%). We show that this QPO is different from the type-A, -B, and -C QPOs usually observed in black hole X-ray binaries. We compare QPOs at similar frequencies that have been previously detected in other persistent high-mass X-ray binaries in the soft state; we speculate that such QPOs might relate to some local inhomogeneity rarely formed in the accretion flow of wind-fed accretion systems.
Implications of Flat Optically Thick Microwave Spectra in Solar Flares for Source Size and Morphology
Authors: Shaik Shaheda Begum , Gary Dale E. 
Published: September 2021

Abstract
The study aims to examine the spectral dynamics of the low-frequency, optically thick gyrosynchrotron microwave emission in solar flares to determine the characteristics of the emitting source. We present the high-resolution spectra of a set of microwave bursts observed by the Expanded Owens Valley Solar Array (EOVSA) during its commissioning phase in the 2.5–18 GHz frequency range with 1 second time resolution. Out of the 12 events analyzed in this study, nine bursts exhibit a direct decrease with time in the optically thick spectral index α

l
, an indicator of source morphology. Particularly, five bursts display a “flat” spectrum (α

l
≤ 1.0) compared to that expected for a homogeneous/uniform source (α

l
≈ 2.9). These flat spectra at low frequencies (<10 GHz) can be defined as the emission from a spatially inhomogeneous source with a large area and/or with multiple emission components. In a subset of six events with partial cross-correlation data, both the events with flat spectra show a source size of ∼120″ at 2.6–3 GHz. Modeling based on inhomogeneity supports the conclusion that multiple discrete sources can only reproduce a flat spectrum. We report that these flat spectra appear predominantly in the decay phase and typically grow flatter over the duration in most of the bursts, which indicates an increasing inhomogeneity and complexity of the emitting volume as the flare progresses. This large volume of flare emission filled with the trapped energetic particles is often invisible in other wavelengths, like hard X-rays, presumably due to the collisionless conditions in these regions of low ambient density and magnetic field strength.
Merger or Not: Accounting for Human Biases in Identifying Galactic Merger Signatures
Authors: Lambrides Erini L. , Watts Duncan J. , Chiaberge Marco , Tchernyshyov Kirill , Kirkpatrick Allison , Meyer Eileen T. , Heckman Timothy , Simons Raymond , Amram Oz , Hall Kirsten R. , Long Arianna , Norman Colin 
Published: September 2021

Abstract
Significant galaxy mergers throughout cosmic time play a fundamental role in theories of galaxy evolution. The widespread usage of human classifiers to visually assess whether galaxies are in merging systems remains a fundamental component of many morphology studies. Studies that employ human classifiers usually construct a control sample, and rely on the assumption that the bias introduced by using humans will be evenly applied to all samples. In this work, we test this assumption and develop methods to correct for it. Using the standard binomial statistical methods employed in many morphology studies, we find that the merger fraction, error, and the significance of the difference between two samples are dependent on the intrinsic merger fraction of any given sample. We propose a method of quantifying merger biases of individual human classifiers and incorporate these biases into a full probabilistic model to determine the merger fraction and the probability of an individual galaxy being in a merger. Using 14 simulated human responses and accuracies, we are able to correctly label a galaxy as merger or isolated to within 1% of the truth. Using 14 real human responses on a set of realistic mock galaxy simulation snapshots our model is able to recover the pre-coalesced merger fraction to within 10%. Our method can not only increase the accuracy of studies probing the merger state of galaxies at cosmic noon, but also can be used to construct more accurate training sets in machine-learning studies that use human classified data sets.
On the Role of Solar Wind Expansion as a Source of Whistler Waves: Scattering of Suprathermal Electrons and Heat Flux Regulation in the Inner Heliosphere
Authors: Micera A. , Zhukov A. N. , López R. A. , Boella E. , Tenerani A. , Velli M. , Lapenta G. , Innocenti M. E. 
Published: September 2021

Abstract
The role of solar wind expansion in generating whistler waves is investigated using the EB-iPic3D code, which models solar wind expansion self-consistently within a fully kinetic semi-implicit approach. The simulation is initialized with an electron velocity distribution function modeled after observations of the Parker Solar Probe during its first perihelion at 0.166 au, consisting of a dense core and an antisunward strahl. This distribution function is initially stable with respect to kinetic instabilities. Expansion drives the solar wind into successive regimes where whistler heat flux instabilities are triggered. These instabilities produce sunward whistler waves initially characterized by predominantly oblique propagation with respect to the interplanetary magnetic field. The excited waves interact with the electrons via resonant scattering processes. As a consequence, the strahl pitch angle distribution broadens and its drift velocity reduces. The strahl electrons are scattered in the direction perpendicular to the magnetic field, and an electron halo is formed. At a later stage, resonant electron firehose instability is triggered and further affects the electron temperature anisotropy as the solar wind expands. Wave–particle interaction processes are accompanied by a substantial reduction of the solar wind heat flux. The simulated whistler waves are in qualitative agreement with observations in terms of wave frequencies, amplitudes, and propagation angles. Our work proposes an explanation for the observations of oblique and parallel whistler waves in the solar wind. We conclude that solar wind expansion has to be factored in when trying to explain kinetic processes at different heliocentric distances.