bluuebunny/crossref_metadata_2025_split huggingface dataset:
Reconstructing solar magnetic fields from historical observations
Authors: Tähtinen Ismo , Pevtsov Alexei A. , Asikainen Timo , Mursula Kalevi 
Published: September 2024

Context. The relation between the intensity of chromospheric emissions and the photospheric magnetic field strength has been examined in several studies, but the effect of the magnetic field inclination on chromospheric emissions remains almost unexplored.
Aims. We study how the inclination of the photospheric magnetic field, as measured by the full 3D magnetic vector from the Helioseismic and Magnetic Imager (HMI), affects the relationship between the magnetic field strength and the far-ultraviolet emission at around 1600 Å observed by the Atmospheric Imaging Assembly (AIA). We also study how these parameters change spatially close to the active region perimeter.
Methods. We analyzed the mutual dependence of 1168 co-temporal AIA and HMI observations from 2014 to 2017. We focused on magnetically active regions outside sunspots (e.g., plages and network) close to the solar disk center. We studied how the AIA and HMI parameters change with distance from the active region perimeter.
Results. The AIA 1600 emission typically decreases with increasing (more horizontal) inclination. For all inclinations, AIA 1600 emission increases with increasing magnetic field strength until saturating at some peak intensity, which depends on the cosine of the inclination, with horizontal regions saturating at lower intensities. In addition, we find that activity clusters have a narrow boundary (< 2 arcsec) in which the AIA 1600 intensity, magnetic field strength, and inclination distributions and relations differ significantly from those in the inner layers.
Conclusions. This study demonstrates the significant effect that magnetic field inclination and activity cluster border regions have on chromospheric emissions. Although the observed effects are likely reduced in low-resolution observations where different regions are averaged together, a detailed study is needed to examine the emission–magnetic field relation at different resolutions.
Intellectual Capital and Companies’ Sustainable Growth: Evidence from Indonesia
Authors: Akmalia Alien , Muharam Harjum 
Published: September 2024

Intellectual capital (IC) is acknowledged as a source of wealth creation, thereby fostering competitive advantage and sustainability within the business domain. This study aims to conduct an empirical investigation to examine the impact of IC and its components on the sustainable growth of Indonesia Stock Exchange-listed manufacturing companies. This study employs multiple linear regression to examine data pertaining to Indonesia Stock Exchange-listed manufacturing companies from 2020 to 2022. It has been confirmed that intellectual capital promotes sustainable development, according to the findings of the research. Likewise, it has been observed that the elements comprising Structural Capital Efficiency (SCE) and Capital Employed Efficiency (CEE) encourage sustainable growth. However, different results are shown by Human Capital Efficiency (HCE), which indicates that HCE is unable to influence SG. The outcomes of this study offer valuable perspectives on the crucial components that can bolster sustainable	growth	in	developing	countries.
Constraints and lexical conditioning in the dative alternation
Authors: Engel Alexandra , Andries Elsy , Rosseel Laura , Szmrecsanyi Benedikt , Van de Velde Freek 
Published: September 2024

Abstract
This article presents a cross-linguistic variationist study of the dative alternations in English (I gave
Tom a present vs. I gave a present to Tom) and Dutch (Ik gaf Tom een cadeau vs.
Ik gaf een cadeau aan Tom). We use logistic mixed-effects regression and lasso regression to assess the
probabilistic conditioning of dative choices as a function of morphosyntactic, semantico-pragmatic and lexical constraints in both
languages. In addition, we test the predictive accuracy of our two language-specific models cross-linguistically. The results show
a substantial overlap in the probabilistic constraints, but also a larger reliance on lexical content in Dutch compared to
English, which suggests differences in complexity across the English and Dutch dative alternations. The methodology adopted in
this study may pave a new way for comparative variational linguistics.
Political motivation in media interpreting
Authors: Li Bo 
Published: September 2024

Abstract
Media interpreting has received intensifying attention from interpreting scholars over the past few decades. Live
transmissions with on-site simultaneous interpreting of influential political events have proliferated especially during the
COVID-19 pandemic and have become accessible via digital media platforms. This article analyses the corpus of the COVID-19 topic
from the first and final presidential debates in the 2020 US election transmitted by two TV stations in Taiwan holding opposite
political orientations — pro-China and pro-Taiwan independence, respectively. A detailed evaluation of the corpus suggests how
word choice, self-correction and intonation by interpreters are leveraged to influence viewers. Ethically, interpreters are
expected to provide neutral and faithful interpreting. However, the findings reveal that the interpreters were aligned with the TV
stations’ dominant ideologies and altered their presentations to achieve political objectives.
Summing gravitational effects from loops of inflationary scalars
Authors: Miao S P , Tsamis N C , Woodard R P 
Published: September 2024

Abstract
We develop a procedure for re-summing the large logarithms induced in gravity by loops of inflationary scalars. We first show how the scalar can be integrated out of the field equations in the presence of constant graviton field. We then extend this result to a fully conserved form which explains the need for a finite renormalization of the cosmological constant which was previously inferred from explicit computation. A variant of the renormalization group turns out to explain the large logarithmic corrections revealed by explicit computation in the electric field strength of gravitational radiation and in the potentials which characterize the response to a point mass. The implications for graviton loops are discussed.
Roles of shallow energy level defect states on amplified spontaneous emission enhancement of CH3NH3PbBr3 perovskite crystals
Authors: Dao Quang-Duy , Thi Nguyen Thanh Nhan , Nguyen Nguyet Minh , Pham Duong Van , Pham Thanh Van , Nguyen Huy Duy , Bach Huong Giang , Do Quang Loc , Mai Hanh Hong 
Published: September 2024

Abstract
In this work, we demonstrated the role of shallow energy level defect states on the emission of CH3NH3PbBr3 perovskite polycrystals under laser excitation. The perovskite polycrystals were synthesized by a simple, one-step, low-cost solution self-assembled method. By adjusting the sample preparation temperature from 303 to 373 K, we could manipulate the number of shallow energy level defect states, which were evaluated through low-temperature photoluminescence measurement. This led to an evolution of the CH3NH3PbBr3 perovskite polycrystals’ emission from amplified spontaneous emission to random lasing emission. As a result, the most efficient lasing threshold of 4 μJ mm−2 was achieved with the CH3NH3PbBr3 perovskite polycrystals synthesized at the optimum temperature of 333 K. Furthermore, the surface morphologies and the crystal structure of the CH3NH3PbBr3 perovskite polycrystals were also taken into consideration to unravel the role of defects in the CH3NH3PbBr3 perovskite polycrystals.
Local high chirality near exceptional points based on asymmetric backscattering
Authors: Yang Jingnan , Li Hancong , Yan Sai , Gong Qihuang , Xu Xiulai 
Published: September 2024

Abstract
We investigate local high chirality inside a microcavity near exceptional points (EPs) achieved via asymmetric backscattering by two internal weak scatterers. At EPs, coalescent eigenmodes exhibit position-dependent and symmetric high chirality characteristics for a large azimuthal angle between the two scatterers. However, asymmetric mode field features appear near EPs, where two azimuthal regions in the microcavity classified by the scatterers exhibit different wave types and chirality. Such local mode field features are attributed to the symmetries of backscattering in direction and spatial distribution. The connections between the wave types, the symmetry of mode field distribution and different symmetries of backscattering near EPs are also discussed. Benefiting from the small size of weak scatterers, such microcavities with a high Q/V near EPs can be used to achieve circularly polarized quantum light sources and explore EP modified quantum optical effects in cavity quantum electrodynamics systems.
Spatiotemporal patterns in the active cyclic Potts model
Authors: Noguchi Hiroshi , Fournier Jean-Baptiste 
Published: September 2024

Abstract
The nonequilibrium dynamics of a cycling three-state Potts model is studied on a square lattice using Monte Carlo simulations and continuum theory. This model is relevant to chemical reactions on a catalytic surface and to molecular transport across a membrane. Several characteristic modes are formed depending on the flipping energies between successive states and the contact energies between neighboring sites. Under cyclic symmetry conditions, cycling homogeneous phases and spiral waves (SW) form at low and high flipping energies, respectively. In the intermediate flipping energy regime, these two modes coexist temporally in small systems and/or at low contact energies. Under asymmetric conditions, we observed small biphasic domains exhibiting amoeba-like locomotion and temporal coexistence of SW and a dominant non-cyclic one-state phase. An increase in the flipping energy between two successive states, say state 0 and state 1, while keeping the other flipping energies constant, induces the formation of the third phase (state 2), owing to the suppression of the nucleation of state 0 domains. Under asymmetric conditions regarding the contact energies, two different modes can appear depending on the initial state, due to a hysteresis phenomenon.
Influence of pressure anisotropy on mass-radius relation and stability of millisecond pulsars in f(Q) gravity
Authors: Maurya S.K. , Newton Singh Ksh. , Mustafa G. , Govender M. , Errehymy Abdelghani , Aziz Abdul 
Published: September 2024

Abstract
In this study we explore the astrophysical implications of pressure anisotropy on the physical characteristics of millisecond pulsars within the framework of f(Q) gravity, in particular

f(Q) = - α
Q - β,
where α and β are constants. Starting off with the field equations for anisotropic matter configurations, we adopt the physically salient Durgapal-Fuloria ansatz together with a well-motivated anisotropic factor for the interior matter distribution. This leads to a nonlinear second order differential equation which is integrated to give the complete gravitational and thermodynamical properties of the stellar object. The resulting model is subjected to rigorous tests to ensure that it qualifies as a physically viable compact object within the f(Q)-gravity framework. We study in detail the impact of anisotropy on the mass, radius and stability of the star. Our analyses indicate that our models are well-behaved, singularity-free and can account for the existence of a wide range of observed pulsars with masses ranging from 2.08 to 2.67 M
⊙, with the upper value being in the so-called mass gap regime observed in gravitational events such as GW190814. A comparison of the so-called Symmetric Teleparallel Equivalent to GR (STEGR) models with classical General Relativity (GR) models reveal that the anisotropy parameter and the sign of β impact on the predicted radii of pulsars. In particular, STEGR models have larger radii than their GR counterparts.
New slow-roll approximations for inflation in Einstein-Gauss-Bonnet gravity
Authors: Pozdeeva Ekaterina O. , Skugoreva Maria A. , Toporensky Alexey V. , Vernov Sergey Yu. 
Published: September 2024

Abstract
We propose new slow-roll approximations for inflationary models with the Gauss-Bonnet term. We find more accurate expressions of the standard slow-roll parameters as functions of the scalar field. To check the accuracy of approximations considered we construct inflationary models with quadratic and quartic monomial potentials and the
Gauss-Bonnet term. Numerical analysis of these models indicates that the proposed inflationary scenarios do not contradict to the observation data. New slow-roll approximations show that the constructed inflationary models are in agreement with the observation data, whereas one does not get allowed observational parameters at the same values of parameters of the constructed models in the standard slow-roll approximation.
Primordial black hole interpretation in subsolar mass gravitational wave candidate SSM200308
Authors: Yuan Chen , Huang Qing-Guo 
Published: September 2024

Abstract
In the recent second part of the third observation run by the LIGO-Virgo-KAGRA collaboration, a candidate with sub-solar mass components was reported, which we labelled as SSM200308. This study investigates the premise that primordial black holes (PBHs), arising from Gaussian perturbation collapses, could explain SSM200308. Through Bayesian analysis, we obtain the primordial curvature power spectrum that leads to the merger rate of PBHs aligning with observational data as long as they constitute f
PBH = 5.66+58.68
-5.44 × 10-2 of the dark matter. However, while the gravitational wave (GW) background from binary PBH mergers is within current observational limits, the scalar-induced GWs associated with PBH formation exceed the constraints imposed by pulsar timing arrays, challenging the Gaussian perturbation collapse PBH model as the source of SSM200308.
Measurement of controlled metastable oxygen atom concentration from nitric oxide AC glow discharge plasma
Authors: Fang Hongxin , Zhi Dong , Wu Xuecheng , Li Yunfei , Huang Long , Chang Yu , Kong Rongzong , Hu Shouchao 
Published: September 2024

Abstract
Tunable diode laser absorption spectroscopy has proven to be highly advantageous in the diagnostics of high enthalpy air plasma due to its exceptional sensitivity, selectivity, rapid response, and adaptability to harsh environments. However, measuring dissociated atoms remains challenging because these atoms are short-lived reactive species that quickly react with surrounding particles or collide to form stable molecules, making it difficult to prepare an atomic gas source capable of generating sustained, concentration-stabilized, and high signal-to-noise absorption spectroscopy. In this study, we have developed a laboratory-based glow discharge plasma static calibration system designed for time-resolved measurements of the number density of specific electronic states of O atoms. Experimental results indicate that a low-pressure glow discharge of NO can generate a substantial number of metastable O atoms at relatively stable concentrations. The concentration of these metastable O atoms within the discharge tube can be controlled by adjusting gas pressure and discharge current. As the gas pressure in the discharge tube increases, the concentration of metastable O atoms rises to a peak value of 3.66 × 109 cm−3 before declining. The system’s stability was assessed using Allan variance analysis, revealing the detection limit of metastable O atom number density is 8.0018 × 106 cm−3 when the average time is 3.2 s. By varying the input gas, the system is also capable of generating significant quantities of stable N and OH radicals. The system’s stability, controllability, and versatility in producing reference gases of known composition make it a reliable tool for diagnosing high enthalpy flow fields.
Optical measurements of solid volume fraction and granular temperatures in granular flows over erodible bed
Authors: Sarno Luca , Papa Maria Nicolina , Tai Yih-Chin , Wang Yongqi , Villani Paolo 
Published: September 2024

Abstract
Granular media are ubiquitous in geophysics and industrial applications and, hence, have attracted increasing interest in the scientific community. Yet, their dynamics is far from being completely understood and exhibits a rich variety of flow regimes, ranging from solid-like to gas-like behaviours. In the process of understanding these complex systems, experimental investigations at the laboratory scale and non-invasive measuring techniques play a crucial role. In this work, we report the velocity and solid volume fraction measurements of steady dry granular flows, carried out in a narrow flume and over an erodible bed. The sidewall profiles of flow velocity and granular temperature (i.e., a measure of the fluctuation kinetic energy of the particles) are obtained by a multi-pass window deformation particle image velocimetry (PIV) approach. Conversely, the near-wall solid volume fraction profiles are achieved by employing the stochastic optical method (SOM), proposed in [Sarno et al. Granular Matter (2016) 18: 80]. This non-invasive technique is designed to indirectly estimate the near-wall volume fraction by regarding it as a stochastic process depending on a well-determined physical quantity, called the two-dimensional volume fraction. Such a quantity is made optically measurable thanks to controlled illumination conditions, where the incidence angle of a flicker-free light source is carefully adjusted. The measurements show that granular flows over an erodible bed are generally characterized by a stratified structure with weak mass exchange from one layer to the other, which is typical of dense and quasi-static regimes. Conversely, a more collisional upper region, characterized by higher velocity fluctuations and lower volume fraction values, is systematically found in an upper region with thickness of few grain diameters below the free surface, which confirms the crucial role played by the confining pressures. Moreover, the experimental findings corroborate the existence of long-range momentum exchange mechanisms along the flow depth.
Loss of wearability of hearing protectors
Authors: Cavacece Massimo 
Published: September 2024

Abstract
Many workers spend most of the day working with high noise levels. Wearing personal protective equipment safeguards the worker’s long-term well-being. Despite the worker’s diligence, knowledge does not examine exposure to specific risks to the worker’s health. Threats are the high sound levels the worker subjects their ears to daily. Any loud sound can be dangerous. A more common contribution to hearing damage can be headphones. The regulation recalls the evaluation of headphones in the time and frequency domain. The research estimates the noise level in the worker’s external environment and ear to assess the efficiency of headphones in the frequency domain. The double channel comparison measurement technique enables the simultaneous evaluation of noise exposure on both sides of the head and in configurations such as under a headset and on a shoulder. By comparing the measurement with the external ear of the internal worker, the experimental investigation in the frequency domain can improve the accuracy of noise exposure data in various working environments. This valuable ability is beneficial for assessing the asymmetric exposure of the worker’s ears to noise.
Adaptation of DIC technique for simplified applications in experimental mechanics
Authors: Thatikonda Nandini Priya , Baraldi Daniele , Boscato Giosuè , Cecchi Antonella 
Published: September 2024

Abstract
The literature and practical application of Digital Image Correlation (DIC) present sophisticated methodologies and algorithms that through a correlation between image data, capture complex strains and deformation fields. However, its application requires extensive surface preparations, careful calibrations, high computational capabilities, and in some cases is still susceptible to errors. Through two experimental campaigns, this paper presents an adaptation of the 2D Digital Image Correlation (2D-DIC) technique, where instead of a speckle pattern to derive full-field deformation data, markers with high contrast features are adopted to extract point-wise strains. The primary goal of this adaptation is to define an approachable methodology for researchers without any background in DIC or image analysis and offer an additional tool set for experimental campaigns.
DIC vibration measurement through smartphone devices
Authors: Occhipinti Serena , Neri Paolo , Firrone Christian Maria , Botto Daniele 
Published: September 2024

Abstract
Digital Image Correlation (DIC) stands as a promising non-contact method for assessing the complete dynamics of vibrating structures. Utilizing one or two cameras, DIC can capture either 2D or 3D dynamics. Through subsequent post-processing of images, structural points are correlated across different time frames to derive displacement information. Given the abundance of camera options available, spanning frame rate, resolution, versatility, and quality, the selection process is dictated by specific application needs and financial considerations. This study seeks to explore the feasibility of utilizing the cameras integrated into a ubiquitous device of everyday life: the smartphone. The proposed approaches offer straightforward procedures suitable for educational purposes or early investigation of structure dynamics. The paper presents case studies and discusses simple experiments that students or DIC beginners can conduct on simple vibrating structures. Initially, a simple 2D dynamics was investigated by recording the vibration of a clamped beam with moving constraints using just a single smartphone. The L-type cross section of the beam emphasizes its in-plane motion. The frames were post-processed with open-source software and the deformed shapes were extracted. This assignment serves as an introductory exercise in DIC fundamentals. Subsequently, the focus shifts to investigating the 3D dynamics of the beam. Given the challenges associated with synchronizing multiple smartphone video acquisitions, the image of the beam was instead reflected by two mirrors, and these reflected images were recorded by a single smartphone. Then, the recorded images were split and processed to obtain the full-field 3D dynamics of the beam.
Preliminary design and performance evaluation of optical fiber-based load sensor for aerospace systems
Authors: Aimasso Alessandro , Dalla Vedova Matteo D.L. , Bertone Matteo , Maggiore Paolo 
Published: September 2024

Abstract
This paper describes a new Fiber Bragg Grating (FBG) optical sensor conceived for load measurements in harsh aerospace environments. This sensor combines miniature size, durability, and precision, making it ideal for aerospace applications with extreme temperatures, vibrations, and mechanical stresses. The proposed sensor combines the peculiarities of the traditional load cells with the well-known advantages due to the use of optical fibers. The paper describes the layout, fabrication and performance characteristics of this sensor design. The used materials and the compact packaging enable its integration into space-constrained aerospace systems without compromising performance. The preliminary experimental results demonstrate its potential under various load conditions, validating their applicability in real-world aerospace scenarios; it addresses a critical need for robust and compact load measurement solutions, contributing to the advancement of aerospace technology. This work demonstrates the feasibility of the proposed concept and defines the functional requirements that must be satisfied by future developments of this type of sensor.