bluuebunny/crossref_metadata_2025_split huggingface dataset:
Flexural Investigation Of Fibrous Concrete Slabs Incorporating Pet Wastes As Sand Replacement
Authors: Sabar Zahraa A. , Dawood Abbas O. 
Published: December 2024

Abstract
In this paper, the effect of polyethylene terephthalate waste (PET) on the bending behavior of one-way reinforced fibrous concrete slabs was studied. seven different percentages of PET as sand replacement by weight were used: 0%, 5%, 10%, 15%, 20%, 30%, and 50% reinforced by ratio 1.5% of polypropylene fibers of the concrete mixture volume. Seven concrete slab specimens for each replacement ratio of PET with dimensions of 1500 × 500 × 80 mm were tested, in addition to reference slab. The specimens were tested using a four-point load setup, the measurements included failure load, maximum deflection, flexural strain, ductility index, energy absorption, stiffness, first crack load, and crack pattern. Based on maximum load capacity, 10% PET wastes as sand replacement is the optimum proportion in fibrous concrete mixture with 1.5% polypropylene fiber, yielding an ultimate failure load of 51KN. In additional, the values of the ultimate failure load for the mixtures containing PET waste were change by 4.22%, 14.14%, 26.55%, 11.66%, -0.74%, -5.71% and -57.82%, compared to the reference mixture. Other parameters such as maximum deflection, strain, and energy absorption is increase when the percentage of PET increasing in range 5-30% but, the ductility index is increasing in rang 5-50% in concrete slabs. On the other hand, initial stiffness and secant stiffness were found to be lower when the ratio of PET increasing in range 5-30%, 5-50%, respectively.
Creating Sustainable Ultra-High-Performance Concrete (UHPC) Utilizing Recycled Glass
Authors: Ismaeel Anas Malik , Usman Fathoni , Hayder Gasim , Al-Ani Yasir 
Published: December 2024

Abstract
Sustainable construction materials and trash reuse are effective ecological remedial solutions. Concrete is widely used in construction and structural applications. Ultra-high-performance concrete (UHPC) is a popular concrete innovation with high mechanical properties. However, Portland cement is used in large quantities, making UHPC expensive and limiting its use in structural engineering. Significant CO2 emissions and natural resource depletion occur. To make UHPC more environmentally friendly and affordable, substitute PC in concrete mixture with several additives. This study uses Ground Granulated Blast Furnace Slag (GGBS) and waste glass (WG) at 0%, 10%, and 20% cement replacement to create an eco-friendly and cost-effective UHPC. To accomplish this, 3 cylinders per mix were made and separated. Experimental tests include slump, UPV, compaction factor, and mechanical characteristics. GGBS and WG improved concrete mix workability, according to the findings. For best workability and mechanical properties, replace 10% of cement with WG and GGBS in concrete. Using 10% material additives as cement replacement decreased concrete compressive and tensile strength.
Determination of the Correlation Dependence Between Static and Dynamic Modulus of Deformation of the Granular Sub-Ballast Layers
Authors: Ižvolt Libor , Dobeš Peter , Mečár Martin 
Published: December 2024

Abstract
Technological procedures related to the possession of tracks are often under heavy time constraints. Therefore, the attempts to apply dynamic load tests in the process of diagnostics of implemented construction works on modernised sections of railway infrastructure are increasingly frequent. When modernising constructing traffic constructions – even if dealing with technological works not related to the possession of tracks – it is often necessary to ensure a rapid progression of individual work activities or to carry out diagnostics tests in the sections with limited access to mechanisation. This test is reasonably suitable to detect critical areas not compliant with deformation standards. The combination of dynamic load tests with the static load test in these areas could, therefore, prove to save time as well as financial expenses spent on construction works inspection diagnostics. Based on the above-mentioned reasons, the presented article is focused on the analysis of set values of the dynamic modulus of deformation, obtained through light dynamic load test LDD 100, and the static modulus of deformation obtained by employing the test procedure set out in the methodology regarding the sub-ballast layers diagnostics used for German railways (DIN 18 134) and the methodology used for the Railways of the Slovak Republic (regulation ŽSR TS4).
Economic and Legal Significance of the Polish Tourist Voucher for the Tourism Economy in Poland: Comparison of European Solutions to Stimulate Tourist Demand
Authors: Podhorodecka Katarzyna , Borek Dominik 
Published: December 2024

Abstract
The article aims to answer the question: What impact did the Polish Tourist Voucher have on the tourism economy during the COVID-19 pandemic and the recovery period that followed? It also aims to compare the solutions chosen in Poland with solutions from selected European Union countries that were intended to support tourist demand in a similar way during or immediately after the COVID-19 pandemic; attempts to estimate the volume of tourist movement and value of tourist expenditure generated by the introduction of the Polish Tourist Voucher; and estimates the size of the multiplier effect. It also examines the relationship between the use of the voucher and domestic tourist movement, finding a significant relationship between the use of the tourist voucher and the level of tourist movement.
The physics of citation growth
Authors: Giacomin Alan J. , Zatloukal Martin , Kanso Mona A. , Phan-Thien Nhan 
Published: December 2024

ABSTRACT

Purpose
This study investigates the physics of annual fractional citation growth and its impact on journal bibliographic metrics, focusing on the interplay between journal publication growth and citation dynamics.

Design/methodology/approach
We analyze bibliometric data from three prominent fluids journals—Physics of Fluids, Journal of Fluid Mechanics, and Physical Review Fluids—over the period 1999–2023. The analysis examines the relations among annual fractional journal publication growth, citation growth, and bibliographic metric suppressions.

Findings
Our findings reveal that the suppression of impact factor growth is significantly influenced by annual fractional journal publication growth rather than citation growth. All three journals exhibit similar responses to publication growth with minimal scatter, following a consistent functional relation. We also identify narrow, nearly Gaussian distributions for annual fractional journal publication growth. Furthermore, we introduce a new growth-independent dimensionless bibliometric metric, journal urgency, the ratio of annual fractional citation growth to the 4-year running average immediacy index. This metric captures effectively the dependency of citation growth on urgency and reveals consistent distributions across the journals analyzed.

Research limitations
The study is limited to three major fluids journals and to the availability of bibliometric data from 1999 to 2023. Future work could extend the analysis to other disciplines and journals.

Practical implications
Understanding the relation between publication growth and bibliometric suppressions can inform editorial and strategic decisions in journal management. The proposed journal urgency metric offers a novel tool for assessing and comparing journal performance independent of growth rates.

Originality/value
This study introduces a new bibliometric metric—journal urgency—that provides fresh insights into citation dynamics and bibliographic metric behavior. It highlights the critical role of publication growth in shaping journal impact factors and CiteScores, offering a unified framework applicable across multiple journals.
Parental involvement in Algerian exam classes: a tale of two middle schools
Authors: Sahli Naima , Cherif Souad , Boucif Imen 
Published: December 2024

Abstract
Parental involvement is a critical issue across societies, mainly in the educational setting.This study endeavours to investigate the level of the involvement of parents in their children’s education in exam classes, particularly in order to obtain the Certificate of Middle School Education in rural and urban spheres. This study seeks to examine the extent to which parental engagement and commitment can make a difference in the academic life of children who undertake official exams. Two classes of fourth year middle school took part in the research by filling in an attitudinal questionnaire, and two head teachers took part via a semi-structured interview. The obtained results indicate that parents are involved to some extent in their children’s education in rural areas in contrast with parents in urban ones, who are more involved. These findings are attributed to the geographical variable and the availability of resources and the socioeconomic status in both settings. There is no disparity at the level of homework assistance, time management at home and parental aspirations for children’s future education.
Synthesis and Characterization of the MCM-22̸MCM-41 Hybrid Catalyst
Authors: Freire Vitória de Andrade , Silva André Miranda da , Barbosa Bianca Viana de Sousa , Menezes Romualdo Rodrigues 
Published: December 2024

Objective: The objective of this study is to obtain a hybrid catalyst of the MCM-22/MCM-41 type with catalytic, diffusional, and transport properties for bulky molecules.

Theoretical Framework: It is based on the concepts of hybrid catalyst development and the factors that affect the formation of micro-mesoporous structures, such as recrystallization temperature, crystallization time, mineralizing agent concentration, and the mass ratio of the microporous phase to the mesoporous phase.

Method: The zeolite was synthesized using the static hydrothermal method. The MCM-22/MCM-41 hybrid catalyst were synthesized with different mass ratios of MCM-22 in the MCM-41 synthesis gel.

Results and Discussion: Thermograms indicated that the temperature for removing the structural directing agent was 550 ºC. Diffraction patterns showed an overlap of the mesoporous phase by the microporous phase using zeolite contents above 5%. Micrographs revealed spherical particles of MCM-22 zeolite coated by the mesoporous phase (MCM-41). Textural properties showed a reduction in parameters with the increase of MCM-22 content.

Research Implications: The research contributes to the catalytic field with significant implications for technological innovation, both in science and industry. Continuous research on catalysts using zeolitic or hybrid supports drives innovation in the petrochemical, pharmaceutical, and polymer industries.

Originality/Value: The research aimed to develop more stable hybrid catalysts with higher diffusional capacity and the ability to transport bulky molecules to the active sites, targeting industrial applications.
Ações do Ministério Público para a inserção no mercado de trabalho da pessoa com deficiência no Estado do Rio de Janeiro
Authors: Mendes Maria Cristina Barbosa , Mariani Braz Ruth Maria , Coelho da Silva Pinto Sérgio Crespo 
Published: December 2024

De acordo com os dados da Organização Mundial de Saúde (2011), 1 bilhão de pessoas vive com alguma deficiência, uma em cada sete pessoas no mundo. Este artigo de revisão bibliográfica narrativa é sobre o mercado de trabalho da pessoa com deficiência. Buscamos nas bases de dados científicas referenciais atuais sobre o assunto, mas não descartamos as obras primárias onde pudessem nos definir quem são as pessoas com deficiências e quais são os impactos econômicos da sua inserção. Como resultado, no setor privado, em consequência da Lei de Cotas, apenas a empresa com cem ou mais empregados está obrigada a preencher de dois a cinco por cento dos seus cargos com beneficiários reabilitados ou pessoas com deficiência. Concluímos que o mercado de trabalho ainda está longe de ser inclusivo. É um longo processo e as conquistas de direitos dependem dos atores que estiverem envolvidos.
Disk Evolution of Classical Be Stars with Misaligned Binary Companions
Authors: Suffak Mark W. , Jones Carol E. , Carciofi Alex C. 
Published: December 2024

Classical Be stars are rapidly rotating B type stars that are surrounded by a gaseous circumstellar decretion disk. Like many massive stars, Be stars are frequently found to exist in binary systems, with a wide array of orbital configurations. Recently, we have computed three- dimensional (3D) smoothed particle hydrodynamics (SPH) models of Be stars with equal-mass binary companions whose orbit is misaligned to the initial plane of the disk and found that the misaligned companion can cause the disk to undergo phenomena of Kozai–Lidov oscillations, and disk-tearing, in addition to the expected tilting and warping of the disk. We now show that these phenomena are not unique to equal-mass systems, but that there is a range of mass ratios for which disk-tearing and Kozai–Lidov oscillations can occur. We also find that an increase in viscosity can suppress these phenomena. Next, we combine our SPH models with the 3D nonlocal thermodynamic equilibrium Monte Carlo radiative transfer code HDUST to produce synthetic spectra of these systems. We show how both phenomena can change the Hα emission line profile, and how disk-tearing creates a detectable polarization signature. We also present a comparison of the observable trends in our disk-tearing model, and how these mimic the changes observed in Pleione (28 Tau). Overall our results demonstrate how phenomena from a misaligned binary companion can cause variations in observables across the whole disk, and that these phenomena need to be considered when analyzing the time evolution of Be star spectra.
The Polstar UV Spectropolarimetry Mission
Authors: Ignace Richard , Scowen Paul 
Published: December 2024

The Polstar small explorer concept is for an ultraviolet (UV) spectropolarimetry space telescope mission with a focus on massive star astrophysics. The instrument waveband will be from 115 nm to 286 nm for spectroscopy, and from 122 nm to 286 nm for polarimetry. All four Stokes parameters, I, Q, U, and V , will be measured at a resolving power of R=20,000 (15 km s−1 velocity resolution). The telescope aperture will be 40 cm with an effective area of about 22 cm2 at a reference wavelength of 150 nm. The thrust of the science goals will be to determine the astrophysics of angular momentum exchange and transport, and consequences for massive star properties and evolution. This includes the effects of rapid to critical rotation for individual stars (magnetic and non-magnetic), and the effects of mass transfer for massive binaries, including identification of stripped core stars. If selected by the NASA/SMEX program, Polstar would launch around 2031 and observe ∼300 stars to achieve science goals. The mission will include a Guest Observer program to advance discovery in other areas of astrophysics.
Post-supernova Binary Interactions
Authors: Hirai Ryosuke 
Published: December 2024

Binary evolution plays a key role in determining the properties of supernova progenitors, while supernova explosions can also significantly impact the evolution of the binary. In this paper I discuss several forms of binary interactions that happen immediately after supernova explosions and their observational consequences. I first discuss energy deposition into the companion envelope through ejecta–companion interaction, that can cause the star to temporarily inflate and become overluminous. I show that we can use this to constrain pre-supernova binary properties if we observe the inflated state of these companions and their later deflation. I then discuss direct collisions between new-born neutron stars and companion stars. Depending on the kick velocity and impact parameter, the neutron star can sometimes penetrate the companion envelope and capture part of the material, causing multiple bumps in the light curve through accretion feedback. I then briefly discuss how to combine these two studies to explain the undulations in the recently discovered SN2022jli.
La simplicité peut être trompeuse : un nouveau regard sur les variations périodiques de WR 6
Authors: Chené André-Nicolas , Lenoir-Craig Guillaume , St-Louis Nicole , Moffat Anthony F. J. 
Published: December 2024

WR 6 is variable with a period around 3.7 days, but the period and the shape of the variations seem to be different in every dataset. Looking at historic light curves, we suggest that variations are mostly absorption features. Examining the BRITE satellite light curve, every feature seems to have a slightly different period from one another. We propose that the variations come from Corotating Interaction Regions in WR 6’s wind and that the star shows differential rotation.
Modeling the Spectrum of the High-mass X-ray Binary System IGR J17544-2619
Authors: Nikolaeva Evgeniia , Maryeva Olga , Bikmaev Ilfan 
Published: December 2024

We revised the parameters of the High-mass X-ray Binary IGR J17544-2619 using the well-measured distance to the system from the Gaia survey. We modeled the spectrum of the optical component using the PoWR model grids, and CMFGEN code and determined its physical parameters: Teff = 32000 K, log g = 3.6, L∗ = 1.8×105 L⊙, mopt = 27.5 M⊙. The measured parameters made it possible to determine the optical component's position on the Hertzsprung–Russell diagram as a star that has left the Main Sequence.
Cotton plant topping combined with plant density has a positive effect on seed-cotton yield in the South Sudanian zone of Mali
Authors: Traoré Amadou , Diawara Mamadou Oumar , Ba Alassane , Traoré Sidi Oumar , Dembélé Bandiougou , Koné Abdoul Kader , Soumaré Mamy , Sissoko Fagaye 
Published: December 2024

Description of the subject. In Mali, cotton (Gossypium hirsutum L.) plays an essential role in economic and social activities in terms of income generation, rural organization and modernization of production systems. Cotton topping is a cultivation technique that reduces the growth in size of the cotton plant while favoring the production process. Objectives. The aim of this study was to evaluate the effect of topping combined with new sowing density on seed-cotton yield. Method. The study was conducted in Mali over two years (2020 and 2021) at the Finkolo research station in the Sudanian zone and one year (2022) in farmers’ fields. The experiment included two cotton varieties (NTAMS334 and BRS293) and two sowing densities, with or without topping cotton plants. The recommended sowing density of 80 cm x 30 cm with two plants per seed hole was compared with a new sowing density of 80 cm x 20 cm with one plant per seed hole. The main advantage of the new sowing density was the acceleration of the cotton plant's growth in height, thanks to the strong competition for light before topping. Results. The results showed that topping significantly reduced the average number of fruit-bearing branches per cotton plant (14 for the non-topped modalities and 10 for the topped modalities). The number of fruiting positions occupied per plant, boll load per plant, and seed-cotton yield increased with topping. The highest seed-cotton yields at the research station (2,238 kg·ha-1) and in farmers’ fields (2,391 kg·ha-1) were obtained with the new sowing density combined with topping. Conclusions. The results of this study can be used as a modifier of canopy and sowing density under cotton overgrowth conditions.
ГЕОИНФОРМАЦИОННАЯ СИСТЕМА ДЛЯ ВИЗУАЛИЗАЦИИ ПОЛЯРНОГО СИЯНИЯ И МОНИТОРИНГА ПРОСТРАНСТВЕННОГО ДРЕЙФА ГЕОМАГНИТНЫХ ПОЛЮСОВ
Authors: Шакиров Айрат Ришатович 
Published: December 2024

Предложен алгоритм отображения полярного сияния в геоинформационном продукте ArcGis, а также приведен алгоритм поиска центра полярных сияний или же поиск геомагнитного полюса земли, основанный на языке программирования python. Предложенный алгоритм предоставляет полезный инструмент для понимания, в каких местах будет видно полярное сияние и с какой интенсивностью. А также благодаря поиску центра полярного сияния возможно найти центр геомагнитного полюса, который часто меняет свое местоположение, что, в свою очередь, дает возможность лучше определить местоположение полярного сияния, а также прогнозировать как само полярное сияние, так и его интенсивность, что позволяет подготовиться к техногенным рискам от аврорального овала. Для получения данных аврорального овала был создан скрипт на языке программирования php, который сохраняет данные со станций на облачное хранилище, такое как Яндекс.Диск.
The paper proposes an algorithm for displaying the aurora borealis in the geoinformation product of ArcGIS and gives an algorithm for searching for the center of the aurora borealis or searching for the geomagnetic pole of the earth. This algorithm is based on the python programming language. The proposed algorithm provides us with a useful tool for understanding of that, in which places and with which intensity the aurora borealis will be visible. Also thanks to the search for the center of the aurora borealis, it is possible to find the center of the geomagnetic pole, which often changes its location, which in turn gives us the opportunity to better determine the location of the aurora borealis, as well as to predict both the aurora itself and its intensity, it allows us to prepare for man-made risks associated with the auroral oval. To get the auroral oval data, a script was created in the php programming language that keeps data from stations to a cloud storage such as Yandex.Disk.