bluuebunny/crossref_metadata_2025_split huggingface dataset:
The construction and legitimation of Elisa Loncón as a Mapuche female political leader on Instagram
Authors: Pérez-Arredondo Carolina , Cárdenas-Neira Camila , Cárcamo-Ulloa Luis 
Published: November 2023

Abstract
This study analyzed the multimodal discursive strategies Elisa Loncón, a Mapuche linguist and renowned academic,
used on Instagram to position herself as a sociopolitical leader during her tenure as president of the Chilean Constitutional
Convention. 811 Instagram posts from her account were downloaded from 15 January 2021 until 15 January 2022. From this, 81 of the
most interacted posts were selected and used to examine her multimodal discursive strategies while drawing on the
Discourse-Historical Approach (Reisigl and Wodak 2001, 2016). The results revealed three main themes: (1) the construction of an alternative leadership, (2)
visibilization of female leadership decision-making, and (3) a vindication of linguistic rights. Referential and intensification
strategies were particularly salient, and they were used to legitimize her role and foreground her Mapuche ancestry. These
findings highlight how female political leaders (and their intersecting identities) strategically deploy their communication
practices to resist sexism and racism.
Self-promotion, ideology and power in the social media posts of Nigerian Female Political Leaders
Authors: Igwebuike Ebuka Elias , Chimuanya Lily 
Published: November 2023

Abstract
This article examines how Nigerian female political leaders (NFPLs) exploit self-presentation strategies to
formulate and promote social justice. Using insights from critical discourse analysis and Jones and Pittman’s (1982) self-presentation strategies, and with a data set from the verified Facebook and Twitter
accounts of two female ministers and three female senators, the study investigates how NFPLs systematically utilize discursive
strategies such as self-promotion, ingratiation, exemplification, intimidation and supplication to present themselves as a
powerful voice for the voiceless and as active alternative leaders. The study argues that the strategies help the leaders to
amplify their authority by showcasing personal presence and past accomplishments, appealing to the concerns of the masses and
soliciting their support in future elections. The study demonstrates that these strategies project female leaders as dynamic
participants in political and public decision-making processes and positively evaluate their contributions to social change.
Creep in 0.91(Na1/2Bi1/2)TiO3-0.06BaTiO3-0.03K0.5Na0.5NbO3 lead-free piezoceramic under constant electric field loads
Authors: Chen Di , Ayrikyan Azatuhi , Chu Xiangcheng , Kamlah Marc , Webber Kyle G 
Published: November 2023

Abstract
This work explores the creep behavior of polycrystalline 0.91(Na1/2Bi1/2)TiO3-0.06BaTiO3-0.03K0.5Na0.5NbO3 under constant electric fields. It reveals intriguing time-dependent variations in both polarization and strain response, which can be attributed to a transformation from the relaxor state to a long-range ferroelectric order. Meanwhile, bulk volume resistivity values are obtained to eliminate the influence of leakage current on the polarization assessment. The findings provide valuable insights into the creep behavior of lead-free relaxor ferroelectrics, laying a solid foundation for enhancing the performance and reliability of piezoactuators.
Splitting phenomenon of ferromagnetic resonance spectra in NiFe films deposited on periodically rippled sapphire substrates
Authors: Xu Xu , Zheng Lei , Jin Lichuan , Wen Tianlong , Liao Yulong , Tang Xiaoli , Li Yuanxun , Zhong Zhiyong 
Published: November 2023

Abstract
The splitting phenomenon of ferromagnetic resonance (FMR) spectra of Ni80Fe20 (NiFe) films deposited on periodically rippled sapphire substrates is studied experimentally with the help of micromagnetic simulation. The analyses show that the splitting of FMR spectra is related to the periodic ripple topography of films. When the applied magnetic field is perpendicular to the ripple direction, the effective field of periodically rippled films becomes inhomogeneous. The splitting of FMR spectra originates from localized FMR peaks corresponding to different regions with different effective field intensities in the rippled structure. Furthermore, the relative intensity and position between the split mode and the main FMR mode can be changed by designing ripple topography. This work would help understand the splitting phenomenon of FMR spectra for magnetic thin films deposited on the periodically rippled sapphire substrates.
Effect of substituting on the transition dipole moment of the double perovskite Cs2AgInCl6
Authors: Zhang Lu-lu , Luo Jun , Liu Biao , Yang Junliang , Cai Meng-Qiu 
Published: November 2023

Abstract
The all-inorganic double perovskite Cs2AgInCl6 with three dimensional structure has attracted much attention due to its direct bandgap property and particular luminescence mechanism, which is self-trapped exciton emission. However, it is a pity that Cs2AgInCl6 exhibits low photoluminescence quantum yield, which affects its application for light-emitting devices. In this paper, the band structure and transition dipole moment of Cs2AgIn(1−x)Sb
x
Cl6 (x = 0, 0.25, 0.5, 0.75) are calculated using first principle calculation. The calculated results shows that the pure material Cs2AgInCl6 not only has a large band gap but also has the dipole forbidden transition, which means that the electrons cannot be excited from the valence band maximum to the conduction band minimum. However, the substituted Cs2AgIn0.75Sb0.25Cl6 have a good property for the band gap about 3.066 eV and break forbidden transition at point X. The reason for its change is due to the overlap of electron and hole for charge density. Our work provides theoretical guidance for the design of more efficient light-emitting devices.
Self-sensing ultra-high performance concrete: a review
Authors: Guo Yixuan , Wang Dongyu , Ashour Ashraf , Ding Siqi , Han Baoguo 
Published: November 2023

Abstract
Ultra-high performance concrete (UHPC) is an innovative cementitious composite, that has been widely applied in numerous structural projects because of its superior mechanical properties and durability. However, ensuring the safety of UHPC structures necessitates an urgent need for technology to continuously monitor and evaluate their condition during their extended periods of service. Self-sensing UHPC (SSUHPC) extends the functionality of UHPC system by integrating conductive fillers into the UHPC matrix, allowing it to address above demands with great potential and superiority. By measuring and analyzing the relationship between fraction change in resistivity and external stimulates (force, stress, strain), SSUHPC can effectively monitor the crack initiation and propagation as well as damage events in UHPC structures, thus offering a promising pathway for structural health monitoring (SHM). Research on SSUHPC has attracted substantial interests from both academic and engineering practitioners in recent years, this paper aims to provide a comprehensive review on the state of the art of SSUHPC. It offers a detailed overview of material composition, mechanical properties and self-sensing capabilities, and the underlying mechanisms involved of SSUHPC with various functional fillers. Furthermore, based on the recent advancements in SSUHPC technology, the paper concludes that SSUHPC has superior self-sensing performance under tensile load but poor self-sensing performance under compressive load. The mechanical and self-sensing properties of UHPC are substantially dependent on the type and dosage of functional fillers. In addition, the practical engineering SHM application of SSUHPC, particularly in the context of large-scale structure, is met with certain challenges, such as environment effects on the response of SSUHPC. Therefore, it still requires further extensive investigation and empirical validation to bridge the gap between laboratory research and real engineering application of SSUHPC.
Position measurement technology of boom-type roadheader based on binocular vision
Authors: Cheng Jiameng , Wang Dongjie , Zheng Weixiong , Wang Haixu , Shen Yang , Wu Miao 
Published: November 2023

Abstract
Positioning of underground mining equipment in coal mines is a primary challenge in the intelligent development of tunnel excavation. Accurate and reliable position measurement plays a crucial role in improving excavation efficiency. However, the stability and accuracy of traditional measurement methods are difficult to guarantee due to factors such as vibration, magnetic interference, and the absence of GPS signals in coal mine environments. To address the problem of unstable measurement of the boom-type roadheader‘s position, this paper proposes a binocular vision-based measurement technique that utilizes four light spots as characteristic points. By processing the target images captured by the binocular camera and combining the minimum bounding rectangle and ellipse fitting of the spot regions, the method successfully obtains the four light spot characteristics. Subsequently, precise matching and stereo distance measurement of the target in the left and right images enable the determination of the boom-type roadheader’s posi-tion information. A positioning platform based on binocular vision is built and experimentally evaluated. The results demonstrate that this method can achieve accurate spot extraction and stable measurement of the machine’s position, even in complex backgrounds such as mixed lighting and low illumination. The planar measurement errors within a distance range of 50 m are all within ±25 mm, which basically meets the required construction precision for tunnel excavation.
Non-enzymatic glucose detection with screen-printed chemiresistive sensor using green synthesised silver nanoparticle and multi-walled carbon nanotubes-zinc oxide nanofibers
Authors: Zalke Jitendra B , Narkhede N P , Pandhurnekar C P , Rotake Dinesh R , Singh Shiv Govind 
Published: November 2023

Abstract
Non-enzymatic screen-printed chemiresistive interdigitated electrodes (SPCIE) were designed and fabricated using a low-cost screen-printing method for detection of the glucose. The interdigitated electrodes (IDE) pattern was printed using conductive graphene ink on the glossy surface of the photo paper. The proposed glossy photo paper-based SPCIE are functionalized with multi-walled carbon nanotubes-zinc oxide (MWCNTs-ZnO) nanofibers to create the chemiresistive matrix. Further, to bind these nanofibers with the graphene electrode surface, we have used the green synthesized silver nanoparticles (AgNPs) with banana flower stem fluid (BFSF) as a binder solution. AgNPs with BFSF form the conductive porous natural binder layer (CPNBL). It does not allow to increase the resistivity of the deposited material on graphene electrodes and also keeps the nanofibers intact with paper-based SPCIE. The synthesized material of MWCNT-ZnO nanofibers and green synthesized AgNPs with BFSF as a binder were characterized by Ultraviolet-visible spectroscopy (UV–vis), scanning electron microscope (SEM), x-ray diffraction (XRD), and Fourier-transform infrared spectroscopy (FTIR). The amperometric measurements were performed on the proposed SPCIE sensor to detect the glucose sample directly. The innovative paper-based SPCIE glucose sensor exhibits a linear corelation between current measurements and glucose concentration in the range between 45.22 μm and 20 mm, with a regression coefficient (R
2) of 0.9902 and a lower limit of detection (LoD) of 45.22 μm (n = 5). The sensitivity of the developed SPCIE sensor was 2178.57 μAmM−1cm−2, and the sensor’s response time determined was approximately equal to 18 s. The proposed sensor was also tested for real blood serum sample, and relative standard deviation (RSD) was found equal to 2.95%.
Atypical architectural distortion detection in digital breast tomosynthesis: a multi-view computer-aided detection model with ipsilateral learning
Authors: Pan Jiawei , He Zilong , Li Yue , Zeng Weixiong , Guo Yaya , Jia Lixuan , Jiang Hai , Chen Weiguo , Lu Yao 
Published: November 2023

Abstract

Objective. Breast architectural distortion (AD), a common imaging symptom of breast cancer, is associated with a particularly high rate of missed clinical detection. In clinical practice, atypical ADs that lack an obvious radiating appearance constitute most cases, and detection models based on single-view images often exhibit poor performance in detecting such ADs. Existing multi-view deep learning methods have overlooked the correspondence between anatomical structures across different views. Approach. To develop a computer-aided detection (CADe) model for AD detection that effectively utilizes the craniocaudal (CC) and mediolateral oblique (MLO) views of digital breast tomosynthesis (DBT) images, we proposed an anatomic-structure-based multi-view information fusion approach by leveraging the related anatomical structure information between these ipsilateral views. To obtain a representation that can effectively capture the similarity between ADs in images from ipsilateral views, our approach utilizes a Siamese network architecture to extract and compare information from both views. Additionally, we employed a triplet module that utilizes the anatomical structural relationship between the ipsilateral views as supervision information. Main results. Our method achieved a mean true positive fraction (MTPF) of 0.05–2.0, false positives (FPs) per volume of 64.40%, and a number of FPs at 80% sensitivity (FPs@0.8) of 3.5754; this indicates a 6% improvement in MPTF and 16% reduction in FPs@0.8 compared to the state-of-the-art baseline model. Significance. From our experimental results, it can be observed that the anatomic-structure-based fusion of ipsilateral view information contributes significantly to the improvement of CADe model performance for atypical AD detection based on DBT. The proposed approach has the potential to lead to earlier diagnosis and better patient outcomes.
Experimental evidence of very short power decay lengths in H-mode discharges in the COMPASS tokamak
Authors: Hecko J , Komm M , Sos M , Adamek J , Bilkova P , Bogar K , Bohm P , Jaulmes F , Mysiura I , Tomes M , Vondracek P , Hron M , Panek R ,   COMPASS Team
Published: November 2023

Abstract
Analysis of heat fluxes in scrape-off layer (SOL) plasma is important for the prediction of divertor tile heat loads in future reactor-sized tokamak machines. Typically, the radial heat flux profile can be accurately characterized by the decay length parameter λ

q
. The predictions are then based on the dependence of λ

q
on plasma and machine parameters. In recent years, several empirical scaling models were derived from a collective database of decay lengths observed in several large tokamaks as well as two spherical tokamaks. Most recently, a report from the TCV tokamak showed a deviation from several of the proposed models (Maurizio et al (TCV team) 2021 Nucl. Fusion
61 024003). In this work,

∼

100

edge plasma profiles of ELMy H-mode discharges were collected from the COMPASS tokamak database for heat flux analysis. The COMPASS tokamak has a similar machine size and plasma parameters to the TCV tokamak, offering a valuable comparison. The λ

q
was measured in both downstream and upstream SOL utilizing a divertor probe array validated by an IR camera and Thomson scattering diagnostics. A comparison with the predictions of several scaling models indicated an occurrence of anomalously short (by a factor of 2–5) inter-ELM power decay lengths in both upstream and downstream, as well as a difference in λ

q
between these two regions. Possible causes related to the accuracy of magnetic reconstruction were eliminated and physics-based sources of apparent compression effects were hypothesized as a motivation for future research.
Carbon monoxide ionization in femtosecond bicircular laser pulses
Authors: Cristian Stroe Marius , Fifirig Magda 
Published: November 2023

Abstract
The CO ionization by 7.8 fs bicircular laser field consisting of the coherent superposition of two coplanar circularly polarized laser pulses is studied in the framework of the time-dependent Hartree–Fock method. Six different superpositions composed of a near-infrared pulse with wavelength of 780 nm and an ultraviolet pulse with wavelength ranging from 244 to 390 nm are considered. The intensity of the near-infrared laser pulse is 1.0 × 1014 W cm−2 and the intensity of the ultraviolet laser pulse runs from 5.0 × 1013 to 2.0 × 1014 W/cm2. Numerical results reveal that the ionization probabilities for counter-rotating field are enhanced compared to the ionization probabilities for co-rotating field only for the coherent superposition of 780 and 390 nm circularly polarized laser pulses. Our computations also emphasize that the highest occupied molecular orbital mainly contributes to CO ionization. The contribution of the inner valence molecular orbitals can be significantly increased by adjusting the intensity ratio and the relative phase between the two colors. Note that the co-rotating laser field consisting of the coherent superposition of two circularly polarized laser pulses of wavelengths 780 and 390 nm yields higher ionization probability when the positive direction of the electric field component along molecular axis points to the O nucleus.
Enhancement of electron transport mobility in GaAs/InGaAs asymmetrically doped narrow quantum well pHEMT structure
Authors: Panda Sangita R , Pradhan Manoranjan , Sahu Trinath , Panda Ajit Kumar 
Published: November 2023

Abstract
We study the effect of asymmetric doping concentrations on the electron mobility μ in GaAs/InGaAs-based single quantum well (SQW) as well as double quantum well (DQW) pseudomorphic high electron mobility transistor (pHEMT) structures. Unequal doping in the substrate and surface barriers (n

d1
and n

d2
) causes asymmetric distributions of subband wave functions, ψ

0
and ψ

1, which influence the subband scattering rate matrix elements (SSRME), thereby affecting the subband mobility μ

n
. For narrow well widths (w

w
), in SQW structures, mostly a single subband is occupied. We show that an increase in n

d2
, keeping n

d1
fixed, enhances μ nonlinearly. The interface roughness (ir-) scattering mostly dominates μ in thin wells (w

w
< 70 Å), while generally, μ is determined by ionized impurity (ii-) scattering and to some extent by alloy disorder (ad-) scattering. The influence of ir-scattering enhances, while ad-scattering diminishes, by reducing n

d2
. For DQW, a double subband is occupied. In a symmetric DQW structure at resonance, n

d1
= n

d2
, ψ

0
and ψ

1
equally extend into both the wells. For a minor variation, say n

d1
> n

d2
, ψ

0
mostly lies in one well while ψ

1
is in the other well. In the case of n

d1
< n

d2
, the distribution reverts. The substantial changes in ψ

0
and ψ

1
influence the intra- and inter-SSRME differently through intersubband effects, leading to nonlinear μ

n
as a function of n

d2
. Taking n

d1
+ n

d2
= 3 × 1018 cm−3, we show that for w

w1
= w

w2
= 80 Å, a shallow dip in μ occurs at n

d1
= n

d2
= 1.5 × 1018 cm−3. Whereas, for w

w1
= 60 Å and w

w2
= 100 Å, the dip in μ occurs near the corresponding resonance, n

d1
= 2.3 × 1018 cm−3 and n

d2
= 0.7 × 1018 cm−3. Our results of nonlinear μ can be utilized for performance analysis of pHEMT.
Impact of sputtering gas on the microstructural, mechanical and wetting properties of vanadium nitride coatings
Authors: Rao Akula Umamaheswara , Tiwari Sunil Kumar , Kharb Archana Singh , Chawla Vipin , Dubey Paritosh , Goyat Manjeet Singh , Saxena Vikas , Chawla Amit Kumar 
Published: November 2023

Abstract
Vanadium nitride (VN) coatings were deposited via reactive DC magnetron sputtering technique on a hot substrate (400 °C) with varying partial pressure of N2. The impact of nitrogen partial pressure on the crystal structure, microstructure, elemental composition, surface topography, mechanical and wetting properties of VN coatings was investigated using grazing incidence X-ray diffraction (GIXRD), Raman spectroscopy, field emission scanning electron microscope (FESEM), energy dispersive spectroscopy (EDS), atomic force microscope (AFM), nano-indentation, and drop shape analyzer (DSA). The variation in the N2 partial pressure leads the significant changes in the microstructure, mechanical and wetting properties of the coatings. The GIXRD spectra reveals the formation of crystalline FCC phase in the deposited VN coatings. However, at 100% N2 partial pressure, the preferred orientation of crystal planes changes from (200) to (220). The FESEM image reveals that at low N2 partial pressure, the coating exhibits well-separated grains with clearly visible grain boundaries. As the N2 partial pressure increases, the agglomeration of grains becomes more pronounced, and the grain boundaries become less discernible. However, at 100% N2 partial pressure, the structure transforms into triangular nanoflake-like prismatic structures with voids. The VN coatings with 60% N2 partial pressure exhibits the highest mechanical properties whereas at 100% N2 partial pressure, the VN coatings reveal super-hydrophilic character.
Exploring the potential of GeTe for the application in Thermophotovoltaic (TPV) cell
Authors: Abir Ahnaf Tahmid , Mondal Bipanko Kumar , Hossain Jaker 
Published: November 2023

Abstract
Germanium telluride (GeTe) having a direct bandgap of 0.6 eV has mainly been used in phase change memory and thermoelectric power generation. In this article, we study the electronic structure of the GeTe by first-principles calculations. The theoretical direct bandgap of GeTe was found to be 0.69 eV which is very close to the experimental value. Then, we demonstrated a single-junction GeTe thermophotovoltaic (TPV) cell based on device transport model with np structure at the black body and cell temperature of 1775 and 300 K, respectively. The device was optimized for the higher performance of the TPV cell. The GeTe TPV cell exhibited an efficiency of 7.9% with JSC = 16.16 A cm−2, VOC = 0.360 V and FF = 75.51%, respectively. These results indicate that GeTe could be a promising material for the fabrication of efficient TPV cell.
Influence of substitutional defects on the structural and magnetic properties of barium hexaferrites
Authors: Aladerah Bilal , Gharaibeh Maen , Obeidat Abdalla 
Published: November 2023

Abstract
A computational analysis is conducted to understand the impact of Al and Sr substitutions on the structural and magnetic properties of M-type barium hexaferrite (BaFe12O19 or BFO). Al substitutions in BFO led to concentration-dependent increases in lattice parameters and magnetocrystalline anisotropy energy (

E

MCA

), while the magnetic moment showed a decline. In contrast, Sr substitutions influenced the lattice differently, reducing parameters but enhancing both

E

MCA

and the spin magnetic moment, especially under varying Coulomb interaction (

U

eff

) conditions. It’s noteworthy that the

E

MCA

value reached approximately 1.03 meV with full Sr substitution. Furthermore, SrFe12O19 (SFO) consistently outperformed BFO in terms of exchange interaction parameters. These findings offer valuable insights for the development and optimization of next-generation magnetic materials.