bluuebunny/crossref_metadata_2025_split huggingface dataset:
Lexical diversity and the issue of the basilect/acrolect distinction in Lingua Franca
Authors: Operstein Natalie 
Published: May 2023

Abstract
In their typological survey of pidgins, Parkvall and Bakker (2013)
observe that pidgin discourse is characterized by an exceptionally low type-token ratio. Taking this observation as its starting
point, the present paper examines the type-token ratio in Lingua Franca, a contact language traditionally classified as a pidgin.
The study is based on a unique mini-corpus consisting of parallel translations in Lingua Franca and four comparator languages:
Italian, Spanish, French and English. The paper shows that the type-token ratio of the Lingua Franca variety reflected in the
mini-corpus matches, and in parts surpasses, those of its Romance lexifiers and English. The study expands our knowledge of the
basilect/acrolect distinction in Lingua Franca and contributes to the discussion about the role of lexical diversity in the
typological categorization of contact languages.
Culture in a radically usage-based model of language change, with special reference to constructional attrition
Authors: Noël Dirk 
Published: May 2023

Abstract
This article offers theoretical and programmatic reflection on how the impact of culture on language change should be accounted for from a radically usage-based diachronic construction grammatical perspective, with a focus on how cultural change can cause constructions to disappear from a language. It approaches this question through an assessment of how culture is incorporated in Schmid’s (2020) Entrenchment-and-Conventionalization model of ‘the dynamics of the linguistic system’. Against the backdrop of various proposals on the effect of ‘democratization’ in Anglo-Saxon culture on subtractive historical developments in the modal domain of English, and based on a study of interpersonal variation in the intrapersonal longitudinal development of a declining modal construction, the paper argues that the influence of culture on language change is mediated by entrenchment and that culture has a more extensive impact on entrenchment than the EC-model currently allows for.
Influence of sex hormones status and type of training on regional bone mineral density in exercising females
Authors: Guisado‐Cuadrado Isabel , Alfaro‐Magallanes Víctor M. , Romero‐Parra Nuria , Rael Beatriz , Guadalupe‐Grau Amelia , Peinado Ana B. 
Published: May 2023

ABSTRACTThe primary objective of this study was to examine the influence of hormonal ovarian profile and training characteristics on spine, pelvis, and total body bone mineral density (BMD) in a group of well‐trained females. Forty‐two eumenorrheic females, twenty‐eight monophasic oral contraceptive (OC) users and thirteen postmenopausal females participated in this study. Body composition was measured by total body dual‐energy X‐ray absorptiometry (DXA) to determine BMD of the areas of interest. Endurance‐trained premenopausal females showed lower spine BMD compared to resistance‐trained premenopausal females (1.03 ± 0.1 vs. 1.09 ± 0.09 g/cm2; p = 0.025). Postmenopausal females reported lower BMD level in comparison to eumenorrheic females in pelvis (1.079 ± 0.082 vs 1.19 ± 0.115 g/cm2; p = 0.005), spine (0.969 ± 0.097 vs 1.069 ± 0.109 g/cm2; p = 0.012) and total (1.122 ± 0.08 vs 1.193 ± 0.077 g/cm2; p = 0.018) and OC users whose duration of OC use was less than 5 years (OC < 5) in pelvis (1.235 ± 0.068 g/cm2; p < 0.001) and spine (1.062 ± 0.069 g/cm2; p = 0.018). In addition, lower BMD values were found in OC users who had been using OC for more than 5 years (OC ≥ 5) than eumenorrheic females in pelvis (1.078 ± 0.086 g/cm2; p = 0.029) and spine (0.966 ± 0.08 g/cm2; p = 0.05). Likewise, OC ≥ 5 showed lower values than and OC < 5 in pelvis (p = 0.004) and spine (p = 0.047). We observed a lower spine BMD value in premenopausal endurance‐trained females compared to premenopausal resistance‐trained females. Moreover, this research observed that prolonged use of OCs may reduce bone mass acquisition in the spine and pelvis, even in well‐trained females. Finally, postmenopausal showed lower BMD despite being exercising women.Trial registration: ClinicalTrials.gov identifier: NCT04458662.Highlights

Ovarian hormonal profile should be considered when assessing BMD in female athletes.
The duration of oral contraceptive use influences spine and pelvis regional BMD in exercising females.
Postmenopausal women show lower BMD when compared to premenopausal females despite being exercising females.
Qualitative inverse problems: mapping data to the features of trajectories and parameter values of an ODE model
Authors: Duan X , Rubin J E , Swigon D 
Published: May 2023

Abstract
Our recent work on linear and affine dynamical systems has laid out a general framework for inferring the parameters of a differential equation model from a discrete set of data points collected from a system being modeled. It introduced a new class of inverse problems where qualitative information about the parameters and the associated dynamics of the system is determined for regions of the data space, rather than just for isolated experiments. Rigorous mathematical results have justified this approach and have identified common features that arise for certain classes of integrable models. In this work we present a thorough numerical investigation that shows that several of these core features extend to a paradigmatic linear-in-parameters model, the Lotka–Volterra (LV) system, which we consider in the conservative case as well as under the addition of terms that perturb the system away from this regime. A central construct for this analysis is a concise representation of parameter and dynamical features in the data space that we call the P

n
-diagram, which is particularly useful for visualization of the qualitative dependence of the system dynamics on data for low-dimensional (small n) systems. Our work also exposes some new properties related to non-uniqueness that arise for these LV systems, with non-uniqueness manifesting as a multi-layered structure in the associated P
2-diagrams.
Digital LIGA: exploitation of droplet-on-demand inkjet printing to fabricate complex mechanical structures by electroforming
Authors: Sels Annelies , Blum Remo , Chandran Rajasundar , Montinaro Enrica , Schildknecht Jan , Chabart Mickael , Subramanian Vivek 
Published: May 2023

Abstract
A novel 3D fabrication technique called digital LIGA is proposed, integrating functional digital printing with 3D microfabrication via electrodeposition. This allows for the realization of complex multilevel metallic structures without problems associated with merging growth fronts. To achieve this, we developed a gold nanoparticle ink, compatible with a SU-8 photoresist, for printing the digitally-defined seed layers. Using this ink, selective printing of a conductive seed layer on a multi-level photoresist was used along with subsequent electrodeposition. Defect-free complex multilevel metallic 3D structures were successfully prepared via this method.
The sensitivity analysis of dynamic electric breakdown damage model and simulation of granite by high voltage electric pulse
Authors: Liu Weiji , Zhang Youjian , Zhu Xiaohua , Chen Mengqiu 
Published: May 2023

Abstract
The use of high-voltage electrical pulse (HVEP) technology for improving the rate of penetration in deep, complex formations has been reported; however, its rock fragmentation mechanism is not fully understood, and the parametric design of electric drilling tools is not perfect. This research paper realized the whole process of single-pulse HVEP rock-breaking by using the electric breakdown model, combining circuit parameter coupling, Kirchhoff’s law, electric breakdown criterion, heat transfer process, and solid mechanical field. The sensitivity simulation of HVEP rock-breaking parameters, which considers the structural parameters of pulse power supply, the deterioration of rock during the electrical breakdown process, the correlation between dynamic dielectric strength of rock and time, and rock heterogeneity, is analyzed. The simulation results indicate that the shape of the plasma channel has little relationship with the pulse peak voltage, and the rock-breaking volume of a single pulse is positively related to the pulse peak voltage; the electrode spacing is positively correlated with the breakdown voltage of the rock in a first-order function shape and has a positive correlation with the failure volume; large electrode spacing can promote HVEP rock-breaking; electrode tilt has little effect on the minimum breakdown voltage and failure volume, and its optimal design should be combined with the flow field analysis of the electric bit structure; the heterogeneity index of granite results in breakdown voltage amplitudes within 3 kV and differences in the fragmentation effect of HVEP. The research results can be used as theoretical support for optimizing HVEP matching drilling tools.
Effects of the magnetic field intensity on pole erosion of low-power Hall thrusters
Authors: Wang Lei , Li Yi , Wang Zekai , Liu Zijian , Li Hong , Wei Liqiu , Ding Yongjie 
Published: May 2023

Abstract
Magnetic pole erosion is a key life-limiting factor of low-power Hall thrusters. In this study, the effects of the magnetic field intensity near the inner magnetic pole on the pole erosion of a 100 W permanent-magnet Hall thruster at rated operating point were investigated using magnetic field intensity adjustment technology. The experimental results indicate that the erosion rate of the inner magnetic pole decreased considerably with a decrease in the magnetic field intensity near the inner magnetic pole, and the erosion rate can be decreased by over 37.5% when the magnetic field intensity decreased by 20%. Further analysis indicates that the decrease of magnetic field intensity reduces the number of electrons moving along the magnetic field lines to the magnetic pole, and increases the surface potential of the magnetic pole. The reduction of the potential difference between the channel outlet and the magnetic pole leads to a decrease in the current density and energy of the ions sputtered to the magnetic pole, which contributes greatly to the decrease in pole erosion rate. This study provides a reference for the protection of magnetic pole erosion.
Periodic stacking of two dimensional Bismuth bi-layers in Bismuth stearate thin films
Authors: Saini Rimpy , Gautam Devisharan , Roy Sumalay 
Published: May 2023

Abstract
Investigations of single and bilayers of bismuth are one of the most thrusting areas of research in contemporary condensed matter physics and material sciences. This is because such ultrathin layers of bismuth host interesting exotic electronic properties, which are important from both fundamental science and future application perspectives. In the past, many inorganic processes for the synthesis of single and bi-layers of bismuth were reported using physical and chemical vapor deposition techniques. The ultrathin films deposited are found to interact electronically with the substrates due to their proximity to the substrate surface. We introduce a new and easy organic channel for the synthesis of the bismuth multi-bilayers in ambient conditions. Bismuth stearate multi-bilayer thin films are deposited on the hydrophobic silicon and hydrophilic glass substrates using the Langmuir-Blodgett technique. Optical absorption spectroscopy measurements in the infrared region provided information on various bond structures present in those bismuth stearate thin films. Specular x-ray reflectivity (XRR) experiments and their analysis of such thin films unambiguously show the highly periodic stacking of bismuth bilayers along the surface-normal directions within the multilayer film structure. Model-based microstructural analysis of the XRR data further shows that each bilayer of bismuth is well separated (3.5 nm) from other bismuth bilayers by hydrocarbon chains. At these separations, the electronic states of the bismuth bilayers are expected to be non-interacting with each other. The morphology of the surface obtained from field emission scanning electron microscopy supports the XRR analysis. A bandgap of 3.2 eV was obtained for such bismuth stearate thin films from the optical spectroscopy measurements in the UV-visible range. The large separations between the bismuth-bilayers and between the substrate and the bismuth bilayers are expected to minimize the electronic interactions between them.
Measurement of axial stress in high-strength short bolts using ultrasonic attenuation
Authors: Hu Yiliang , Chen Ping , Peng Xianmin , Yin Aijun , Yu Xin 
Published: May 2023

Abstract
Based on the scattering attenuation theory of loaded polycrystalline metals, a bolt axial stress measurement method using ultrasonic echo attenuation is proposed for the problem that the conventional time of flight (TOF) method is difficult to measure the stress of high-strength short bolts. Firstly, the attenuation coefficients of body-centred cubic crystalline materials in the Rayleigh scattering range are described, and the mathematical model between the ratio of the peak of the two bottom echoes and the axial stress of the bolt is further derived. Then, the effects of the transducer wafer diameter, mounting eccentricity and bolt thread on the ultrasonic signal were analysed by finite element simulation, to provide a strategy for transducer selection and mounting. In addition, a magnetic ring clamping device was designed to ensure a tight fit between the transducer and the bolt, and to improve the alignment of both. Finally, a bolt axial stress ultrasonic measurement system was built, and a comparison experiment between TOF method and attenuation method was conducted to predict the axial stress of bolts. The experimental results shown that the average percentage measurement error of the attenuation method proposed in this paper is 4.42%–5.76% lower than that of the conventional TOF method, which is more suitable for measuring the axial stress of bolts.
Identification of low-SNR Coulter signals based on strongly coupled Lorenz-like oscillators
Authors: Zhao Zhijie , Yang Ruyue , Wang Xiaodong 
Published: May 2023

Abstract
A Coulter prototype experiment is established and innovatively combined with coupled Lorenz-like oscillators to identify low-signal-to-noise ratio (SNR) Coulter signals. Coulter signals are collected by a Wheatstone bridge and fitted by Gaussian pulse signals. Using numerical simulation, low-SNR Gaussian pulses are added to the oscillators, and the synchronization mutation phenomena in the chaotic oscillators performed by the time scale transformation are analyzed. The maxima in the phenomena are used to detect the low-SNR pulses and construct an identification formula for different particle sizes. The nonlinear circuit of the oscillators is designed and fabricated. Then, it is applied to process low-SNR Coulter signals in the experiment. By selecting the maxima in the output signals from the circuit, according to the identification formula containing the correction coefficient, the particle size distribution can be obtained. The nonlinear circuit can effectively process low-SNR Coulter signals, which provides a good foundation for reducing the lower limit of detection in Coulter signals.
Absolute distance measurement using frequency sweeping interferometry with large swept range and target drift compensation
Authors: Zhang Shihua , Jin Hao , Zhang Lingqi , Yan Liping 
Published: May 2023

Abstract
Frequency sweeping interferometry (FSI) is an attractive absolute distance measurement (ADM) method because of the advantages of large unambiguity range, simple structure and excellent flexibility. By using a reference interferometer (RI), the calibration of the frequency sweeping range in FSI can be avoided, and the complexity and cost of the system can be further reduced. Then, the measurement accuracy is associated with the accuracy of phase demodulation, the range of frequency sweeping and the compensation of target drift. In this paper, ADM using FSI with large swept range and target drift compensation is presented. A frequency stabilized HeNe laser that travels along the same optical path with the swept source laser was employed to monitor the target drifts of the measurement interferometer and RI. Interference phases of the corresponding interferometers were extracted simultaneously using phase generated carrier demodulation technique, and an accuracy better than 1° was verified by nanometer displacement measurement. Comparative experiments of ADM at a distance of ∼4.5 m with different swept ranges before and after target drift compensation were carried out, and the results demonstrated that larger swept range and target drift compensation could greatly improve the stability and accuracy of measurement.
In situ generation of FeOOH/NiOOH interface in FeS2/NiS2 nanosheets through deep reconstruction for efficient oxygen evolution reaction
Authors: Jiang Xi , Luo Fengting , Liu Ya , Yu Pei , Chen Shijian 
Published: May 2023

Abstract
Transition metal sulfides (TMSs) for electrochemical water splitting undergo significant self-reconstruction to form actual active species favorable for high oxygen evolution reaction (OER) performance. However, the complete self-reconstruction of most reported TMSs in alkaline media is unfrequent and the active species cannot be efficiently used. Herein, self-supported FeS2/NiS2 nanosheet arrays (FeNiS) are deliberately fabricated as pre-catalysts and then accomplished deep phase transformation into low-crystalline and ultrathin FeOOH/NiOOH (FeNiS-R) nanosheets favorable to alkaline OER. Various ex situ characterization studies uncover that the FeNiS-R with abundant interfaces is generated via complete reconstruction during electrolysis and the high-valence Fe and Ni in the FeNiS-R interface are the real active sites for high OER activity. The reconstructed FeNiS-R exhibits a small overpotential of 290 mV at 100 mA cm−2 and favorable durability (≥80 h), much superior to commercial benchmark IrO2. This work provides a promising avenue to achieve the deep reconstruction of TMSs and the targeted design of OER catalysts in energy devices.
Intra- and inter-rater reliability and agreement of stimulus electrodiagnostic tests in post-COVID-19 patients
Authors: da Silva Almeida Isabella , Gomes de Jesus Ferreira Leandro , de Almeida Ventura Álvaro , Mansur Henrique , Babault Nicolas , de Cássia Marqueti Rita , Durigan João Luiz Quagliotti 
Published: May 2023

Abstract

Background. COVID-19 patients may present sequelae, such as neuromuscular electrophysiological disorders (NED), that can be assessed using the stimulus electrodiagnostic test (SET). However, little is known about the reliability and agreement of the SET in post-COVID-19 patients. Objective. We aimed to verify the intra–inter-rater reliability and agreement of SET measurements in the rectus femoris, vastus medialis, vastus lateralis, tibialis anterior, and gastrocnemius lateralis (GL) in post-COVID-19 participants. Methods. We designed an observational prospective study to evaluate 20 (10 males and 10 females) post-COVID-19 patients, age: 44.95 ± 11.07 years, weight: 87.99 ± 19.08 kg, height: 1.69 ± 0.09 m. Two independent raters took two evaluations using the SET on selected muscles. The intra-class correlation coefficient (ICC) and 95% limits of the agreement defined the quality and magnitude of the measures. Results. For intra-rater reliability, all measurements presented correlations classified as high or very high (ICC: 0.71–1.0). For inter-rater reliability, the rheobase, chronaxie, accommodation, and accommodation index presented high or very high correlations, except for the accommodation index of the GL (ICC = 0.65), which was moderate. Conclusion. The reliability of the SET obtained by independent raters was very high, except for the GL accommodation, which presented moderate ICC. Therefore, the SET is a reliable tool for evaluating NED in post-COVID-19 patients.
Specificity of the electron energy distribution function in a low-pressure nitrogen plasma
Authors: Yao Jingfeng , Yan Chai , Yuan Chengxun , Bogdanov Eugene A , Rabadanov Kurban , Chu Zhijia , Kudryavtsev Anatoly 
Published: May 2023

Abstract
In this work, self-consistent simulations of a glow discharge positive column in low-pressure nitrogen plasma are presented. The electron energy distribution function (EEDF) was calculated by solving the complete (i.e. nonlocal) Boltzmann kinetic equation for electrons in both the energy and coordinate (space) variables. The accuracy and range of applicability of the two limiting cases are considered when the kinetic equation is reduced to a dependence on only one variable: kinetic energy in the local approximation or total energy in the so-called totally nonlocal (Holstein–Tsendin) approximation. It is shown that the Holstein–Tsendin approximation, when electron spatial transport dominates the electron energy relaxation (i.e. the ratio between the typical plasma inhomogeneity characteristic length

Λ

and the electron energy relaxation length

λ
ε

), can be used at low nitrogen pressures (when the parameter pR ⩽ 0.05 Torr). With a further increase in pressure, there is a large intermediate region where the EEDF is nonlocal in the sense that the full kinetic equation must be solved. So, even at pR ≈ 0.5 Torr, the EEDF in nitrogen plasma is nonlocal. Therefore, the use of a local approximation to find the EEDF, when all terms with spatial gradients and an ambipolar field can be discarded in the kinetic equation, requires careful verification. Particular attention should be paid to the periphery of the discharge volume, where the self-consistent ambipolar field inevitably exceeds the external electric field that heats the electrons and produces plasma.
Pulsed field magnetization of a rectangular Y–Ba–Cu–O bulk, single grain superconductor assembly
Authors: Wang Yuchen , Ainslie Mark D , Zhou Difan , Zhang Yibing , Cai Chuanbing , Durrell John H , Cardwell David A 
Published: May 2023

Abstract
The practical magnetization of arrays of multiple single grain, bulk high temperature superconductors is essential for practical applications, such as trapped flux rotating machines, magnetic resonance imaging and nuclear magnetic resonance. We report a systematic investigation of the pulsed field magnetization (PFM) of a bulk assembly consisting of two rectangular Y–Ba–Cu–O bulk single grains, in close proximity, at various temperatures. The measurements of the dynamic variation of the magnetic flux density, supported by numerical analysis, reveal that the induced screening currents during the rise of a pulsed field may greatly enhance the flux density in the region of the junction leading to uneven flux penetration and to an increased likelihood of flux jumps in this region. Such coupling between field and current promotes magnetic flux penetration and improves the peak trapped field from 3.01 T for a bulk single grain to 3.11 T for the bulk assembly at 30 K, improving the magnetization efficiency from 80% to 90%. The peak trapped field was further enhanced to 3.39 T and 3.31 T for the single bulk single grain and the bulk assembly, respectively, by employing a two-step multi-pulse PFM process.