bluuebunny/crossref_metadata_2025_split huggingface dataset:
RETRACTED ARTICLE: A conversational analysis of aging in China from a cross-section of the labour market: a corpus-based study
Authors: Xiao Yonghe , Li Jingxuan 
Published: October 2022

AbstractModern society is undergoing rapid technological growth and urbanisation. Despite the positive changes, there are still vulnerable categories of the population that cannot adapt so quickly to the new realities. The ageing process in the developed countries of Europe, America and Southeast Asia raises the issue of further labour market development. In this regard, it is vital to understand the linguistic picture of a quickly ageing labour market, such as China. Drawing on Conversation Analysis, this study aims to investigate the impact of the ageing process on the labour market and identify age-related trends in communication, behaviour and attitude. The focus is on the socio-economic context. The most important finding is that in most contexts, the language behaviour of ageing labour market participants leaned on three underpinning factors: age, social status and exposure to emotional pressure. Older adults in the Chinese labour market value their informal status, accept social hierarchy, follow strict etiquette rules, tend to self-victimise, and complain about feeling vulnerable. The present findings can help social workers in China improve care for ageing adults and allow other researchers to investigate older people’s participation in the labour market.
Stability of the 2D anisotropic Boussinesq equations with mixed partial dissipation
Authors: Ma Liangliang , Li Lin , Liu Dongbing 
Published: October 2022

Stability is an important property of solutions to many fluid flow equations. In this paper, we focus on the stability problem for two-dimensional Boussinesq equations with only vertical viscosity and horizontal thermal diffusion near a stratified, hydrostatic equilibrium in the domain Ω=T×R, where T=[−12,12] is a 1D periodic box. We are mainly concerned with the H2-stability of global solutions when the initial data are closed to an equilibrium state and sufficiently small. Due to the lack of horizontal viscosity in velocity equations and vertical thermal diffusion in temperature equation, this problem seems to be not trivial and becomes particularly difficult. In order to achieve our main goal, we divide the velocity field and temperature into two parts: the horizontal average and the remaining oscillation part. Besides, we fully exploit the Lt2Lx2-norm of ∂xu2 to help us dominate the nonlinear parts. Our result shows that with a small initial perturbation, there exists a unique global solution to the stated Boussinesq equations. In addition, the perturbation remains small for all time. In particular, our result also demonstrates the stabilizing effect of internal gravity waves, which are induced by the stratified background hydrostatic state.
Signatures of spin-liquid state in a 3D frustrated lattice compound KSrFe2(PO4)3 with S = 5/2
Authors: Boya K. , Nam K. , Kargeti K. , Jain A. , Kumar R. , Panda S. K. , Yusuf S. M. , Paulose P. L. , Voma U. K. , Kermarrec E. , Kim Kee Hoon , Koteswararao B. 
Published: October 2022

A quantum spin-liquid is a spin disordered state of matter in which spins are strongly correlated and highly entangled with low-energy excitations. It has been often found in two-dimensional S = ½, highly frustrated spin networks but rarely observed in three-dimensional (3D) frustrated quantum magnets. Here, KSrFe2(PO4)3, forming a complicated 3D frustrated lattice with a spin moment S = 5/2, is investigated by thermodynamic, neutron diffraction measurements and electronic structure calculations. Despite the relatively sizable Curie–Weiss temperature θCW = −70 K, a conventional magnetic long-range order is confirmed to be absent down to 0.19 K. The magnetic heat capacity data follow the power-law behavior at the lowest temperature region, supporting gapless excitations in a 3D spin-liquid state. Strong geometrical spin frustration responsible for the spin-liquid feature is understood as originating from the almost comparable five competing nearest-neighbor antiferromagnetic exchange interactions, which form the complicated 3D frustrated spin network. All these results suggest that the compound KSrFe2(PO4)3, representing a unique 3D spin frustrated network, could be a rare example of forming a gapless spin-liquid state even with a large spin moment of S = 5/2.
Beam-pointing verification using x-ray pinhole cameras on the 60-beam OMEGA laser
Authors: Stoeckl C. , Cao D. , Ceurvorst L. , Kalb A. , Kwiatkowski J. , Shvydky A. , Theobald W. 
Published: October 2022

On the OMEGA laser system, the beam-pointing accuracy is verified by irradiating a 4 mm diameter Au-coated spherical target with ∼23 kJ of laser energy. Up to ten x-ray pinhole cameras record the x-ray emission from all 60-beam spots. A new set of algorithms has been developed to improve the accuracy of the pointing evaluation. An updated edge-finding procedure allows one to infer the center of the sphere with subpixel accuracy. A new approach was introduced to back-propagate the pixel locations on the 2D image to the 3D surface of the sphere. A fast Fourier transform-based de-noising method significantly improves the signal-to-noise of the data. Based on the beam-pointing analysis, hard-sphere calculations of the laser-drive illumination uniformity on the target surface and the decomposition of the illumination distribution into lower order modes (1–10) are evaluated.
Competing future constructions and the Complexity Principle
Authors: Mikkelsen Olaf , Hartmann Stefan 
Published: October 2022

Abstract
This paper presents a contrastive study on the role of syntactic complexity in the choice between different future constructions in English and Norwegian. Previous work on the English future alternation (BE going to vs. will) has shown that going to is preferred in syntactically complex contexts. We replicate this result for English on the basis of data from the Spoken BNC 2014. In addition, we address the question of whether this account can be generalized to another language that shows a very similar alternation, namely Norwegian (skal/vil vs. kommer til å). We use data from the Norwegian Speech Corpus (NoTa) and the BigBrother corpus, showing that syntactic complexity correlates with the shorter form skal here. We take this as an indication that the observed syntactic distribution is actually a side-effect of semantic differences and suggest possible explanations for this.
Diachronic learner corpus research
Authors: Gilquin Gaëtanelle 
Published: October 2022

Abstract
This paper argues for a diachronic approach to the study of learner language and provides a first exploration of the evolution of English as a foreign language over the last twenty-five years, relying on a corpus resource specifically designed for the short-term diachronic analysis of learner English. The paper describes some of the challenges involved in creating such a resource and shows how these challenges have been responded to. It then investigates a number of linguistic features, some of them taken from short-term diachronic research on native English, and highlights certain changes, underlining that these may be the consequence of natural linguistic evolution, but also of other factors characterizing the acquisition of a foreign language.
“I’m putting some salt in my sandwich”.
Authors: Le Foll Elen 
Published: October 2022

Abstract
Previous studies have claimed that the progressive is frequently over- and misrepresented in English as a Foreign Language (EFL) textbooks (e.g. Römer 2005). This paper compares the representation of progressives in the dialogues of nine series of secondary school EFL textbooks (43 volumes) to the Spoken BNC2014. The frequencies, morphosyntactic and functional aspects of progressive constructions, such as contraction, negation, framing and time reference, are investigated. Collostructional analysis is used to explore the lexical associations of the progressive. A number of idiosyncratic uses of the progressive in textbook conversation are highlighted and pedagogical implications discussed. In particular, key conversational discourse-structuring phrasemes in the progressive are found to be critically underrepresented.
Determinants of exaptation in Verb-Object predicates in the transition from Late Middle English to Early Modern English
Authors: Pérez-Guerra Javier 
Published: October 2022

Abstract
While Verb-Object (VO) is the basic unmarked constituent order of predicates in Present-Day English, in older stages Object-Verb (OV) was the preferred option at least in certain syntactic contexts. This corpus-based study investigates OV linearisation after the loss of verb-second and focuses on morphosyntactic, processing, semantic and textual determinants of the VO/OV variation in the transition from Late Middle to Early Modern English. The findings reveal a shift from OV word order, ruled by systematic predictors in Late Middle English, to an essentially stylistic alternative in Early Modern English, when VO succeeded as the syntacticised organisation in English predicates. Also, in the later period, the postverbal slot was adapted to host constituents functioning as objects, which constitutes an illustration of exaptation.
Electronic absorption spectral analysis of chlorin-based dyad sensitizers by TD-DFT calculations
Authors: Nakamura Takashi , Sasaki Shin-Ichi , Wang Xiao-Feng , Kitao Osamu 
Published: October 2022

Abstract
As part of our studies of chlorophyll-based sensitizers for solar energy applications, we recently synthesized two dyad panchromatic chromophores of chlorin-indoline (Chl-Ind) and chlorin-carotenoid (Chl-Car) conjugates aiming at the wider range of sunlight utilization. By comparing the absorption spectra of these dyad sensitizers in various solvents, we found that each chromophore unit in Chl-Ind showed drastic red-shift when measured in polar solvents, while the spectra of Chl-Car showed lesser solvent effects. To elucidate the origin of such solvatochromism by time dependent density functional theory (TD-DFT) calculations with molecular dynamics studies, we decided to compare the estimation results of TD-DFT/CAM-B3LYP (M06-2X and ωB97X-D)/6-31(d,p) using polarizable continuum model (H2O and THF) with the absorption spectra for Chl-Ind and Chl-Car, together with their sole chromophore units methyl trans-32-carboxy-pyropheophorbide-a (Chl), methyl ester of indoline dye D102 (Ind), and β–apo-8ʹ-carotenoic acid ethyl ester (Car). The results revealed that the unusual peak shifts of Chl and Ind moieties in Chl-Ind dyad could be most properly reproduced at ωB97X-D density functionals. This is likely because ωB97X-D contains dispersion-corrected and long-range corrected functionals. The destabilized HOMO−1 is expected to contribute to the red-shift of Ind peak in the dyad. Our results would provide useful information for the selection of computational methods to anticipate spectral characteristics of covalently-linked multi-chromophores in advance.
Broadband and large-depth terahertz modulation by self-assembly monolayer silver nanoparticle arrays
Authors: Lai Weien , Zhu Qing , Liu Gen , Shi Guanghua , Gan Yichen , Amini Abbas , Cheng Chun 
Published: October 2022

Abstract
Broadband and large-depth THz modulation are crucially important for building next-generation THz devices in THz communication systems. Here, we present a broadband and large-depth THz modulator based on silicon/self-assembled silver nanoparticle (SAM AgNP) arrays, which exhibits a broadband modulation within the frequency range of 0.2–2.0 THz and a large modulation depth of ∼91.2% under a moderate near-infrared (NIR) light intensity of 1.77 W cm−2. For a modulation mechanism, the plasmon-enhanced NIR light absorption of SAM AgNP arrays shows a key role in increasing the photoconductivity of the device under NIR light irradiation. The experimental results are verified well by the numerical simulation. The proposed device can significantly improve the overall performance of THz systems, and opens the opportunity for designing novel nanoparticle-based THz devices.
Delicate superconductivity in nodal-line NaAlGe single crystal
Authors: Chen Zhaoxu , Yang Yuxin , Deng Jun , Du Shixuan , Ying Tianping , Guo Jiangang , Chen Xiaolong 
Published: October 2022

Abstract
Nodal-line superconductor NaAlSi with a transition temperature (

T

c

) of 7 K has attracted considerable attention in recent years, whereas its Ge counterpart, NaAlGe, does not superconduct down to the lowest temperature regardless of their similar atomic and electrical structures. To tackle this enigma, we resort to the growth of NaAlGe single crystal and characterize its ground state. Interestingly, when hole doped by oxidation or extracting Na, single-crystalline NaAlGe transforms from a semimetal/semiconductor to a superconductor (

T

c

=
1.8
∼

3.3 K) with zero resistivity and a diamagnetic shielding fraction over 100

%

, but without a thermodynamic response in heat capacity. Continuous x-ray diffraction reveals a transient new structure with a larger c axis, which is suggested to have arisen from the minor loss of Na and to be responsible for the emergence of the delicate superconductivity. Our findings place NaAlGe on an equal footing with NaAlSi and provide an alternative for studying the intriguing relationship between superconductivity and nodal-line topology.
Parabolic bifurcation loci in the spaces of rational functions
Authors: Okuyama Yûsuke 
Published: October 2022

Abstract
We give a geometric description of the parabolic bifurcation locus in the space Rat
d
of all rational functions on

P

1

of degree d > 1, generalising the study by Morton and Vivaldi in the case of monic polynomials. The results are new even for quadratic rational functions.
Local well-posedness of a coupled Westervelt–Pennes model of nonlinear ultrasonic heating
Authors: Nikolić Vanja , Said-Houari Belkacem 
Published: October 2022

Abstract
High-intensity focused ultrasound (HIFU) waves are known to induce localised heat to a targeted area during medical treatments. In turn, the rise in temperature influences their speed of propagation. This coupling affects the position of the focal region as well as the achieved pressure and temperature values. In this work, we investigate a mathematical model of nonlinear ultrasonic heating based on the Westervelt wave equation coupled to the Pennes bioheat equation that captures this so-called thermal lensing effect. We prove that this quasi-linear model is well-posed locally in time and does not degenerate under a smallness assumption on the pressure data.
Global well-posedness of 2D Euler-α equation in exterior domain
Authors: You Xiaoguang , Zang Aibin , Li Yin 
Published: October 2022

Abstract
After casting Euler-α equations into vorticity-stream function formula, we obtain some very useful estimates from the properties of the vorticity formula in exterior domain. Basing on these estimates, one can have got the global existence and uniqueness of the solutions to Euler-α equations in 2D exterior domain provided that the initial data is regular enough.
E and B modes of the CMB y-type distortions: polarised kinetic Sunyaev-Zeldovich effect from the reionisation and post-reionisation eras
Authors: Gon Aritra Kumar , Khatri Rishi 
Published: October 2022

Abstract
We study the E and B mode polarisation of the cosmic microwave background (CMB) originating from the transverse peculiar velocity of free electrons, at second order in perturbation theory, during the reionisation and post-reionisation eras. Interestingly, the spectrum of this polarised kinetic Sunyaev-Zeldovich (SZ) effect can be decomposed into a blackbody part and a y-type distortion. The y-distortion part is distinguishable from the primary E and B modes and also the lensing B modes. Furthermore, it is also differentiable from the other y-type signals, such as the thermal SZ effect, which are unpolarised. We show that this signal is sensitive to the reionisation history, in particular to how fast reionisation happens. The E and B modes of y-type distortion provide a way to beat the cosmic variance of primary CMB anisotropies and are an independent probe of the cosmological parameters. The blackbody component of the pkSZ effect would be an important foreground for the primordial tensor modes for tensor to scalar ratio r ≲ 3 × 10-5.
Q-switching pulse and mode-locked square-wave pulse generated in a fiber ring laser based on nonlinear polarization rotation
Authors: Wang H Y , Zhan X K , Wang S C , Li Z Y 
Published: October 2022

Abstract
We observe anomalous modes including Q-switching pulses and mode-locked square-wave pulses generated in a dual-gain-media fiber ring laser based on nonlinear polarization rotation in a semiconductor optical amplifier. We disclose the evolution process between them, and present in detail the temporal and spectra profiles of the output pulses. We find that the width of the square-wave pulse can be varied continuously from 500 ps to 165 ns by increasing the semiconductor optical amplifier (SOA) current or rotating the polarization controllers in the ring. The width of the pulse varies along with the temporal profile and spectrum pattern, then we further analyse its width-energy curve. For the first time to our knowledge, when we change the parameter of the ring laser (polarization controllers or variable optical attenuator), the stationary point of the width-energy curve will be shifted to a different position so that change the tuneable range of the pulse width. In addition, the evolution (no peak power clamping effect) and the features (chair-like pulse profile) of the generated square-wave pulse are different than previous reported square-wave pulses. Thus, the proposed scheme can facilitate further investigations of the characteristics of pulse generation in fiber lasers. Additionally, it can also serve as a multi-functional optical source to generate square-wave and Q-switching pulses for potential applications.
Analysis of P

cs
(4338) and related pentaquark molecular states via QCD sum rules*
Authors: Wang Xiu-Wu , Wang Zhi-Gang 
Published: October 2022

Abstract
In this study, we tentatively identify

as the

molecular state and distinguish the isospins of current operators to explore in detail the

,

,

,

,

,

,

, and

molecular states without strange, with strange, and with double strange in the framework of QCD sum rules. The present exploration favors identifying

(

) as the

(

) molecular state with the spin-parity

(

) and isospin

, and the observation of their cousins with the isospin

in the

invariant mass distributions would decipher their inner structures.
Resting-state EEG functional connectivity predicts post-traumatic stress disorder subtypes in veterans
Authors: Li Qianliang , Coulson Theodorsen Maya , Konvalinka Ivana , Eskelund Kasper , Karstoft Karen-Inge , Bo Andersen Søren , Andersen Tobias S 
Published: October 2022

Abstract

Objective. Post-traumatic stress disorder (PTSD) is highly heterogeneous, and identification of quantifiable biomarkers that could pave the way for targeted treatment remains a challenge. Most previous electroencephalography (EEG) studies on PTSD have been limited to specific handpicked features, and their findings have been highly variable and inconsistent. Therefore, to disentangle the role of promising EEG biomarkers, we developed a machine learning framework to investigate a wide range of commonly used EEG biomarkers in order to identify which features or combinations of features are capable of characterizing PTSD and potential subtypes. Approach. We recorded 5 min of eyes-closed and 5 min of eyes-open resting-state EEG from 202 combat-exposed veterans (53% with probable PTSD and 47% combat-exposed controls). Multiple spectral, temporal, and connectivity features were computed and logistic regression, random forest, and support vector machines with feature selection methods were employed to classify PTSD. To obtain robust results, we performed repeated two-layer cross-validation to test on an entirely unseen test set. Main results. Our classifiers obtained a balanced test accuracy of up to 62.9% for predicting PTSD patients. In addition, we identified two subtypes within PTSD: one where EEG patterns were similar to those of the combat-exposed controls, and another that were characterized by increased global functional connectivity. Our classifier obtained a balanced test accuracy of 79.4% when classifying this PTSD subtype from controls, a clear improvement compared to predicting the whole PTSD group. Interestingly, alpha connectivity in the dorsal and ventral attention network was particularly important for the prediction, and these connections were positively correlated with arousal symptom scores, a central symptom cluster of PTSD. Significance. Taken together, the novel framework presented here demonstrates how unsupervised subtyping can delineate heterogeneity and improve machine learning prediction of PTSD, and may pave the way for better identification of quantifiable biomarkers.
Reply to Comment on ‘The advanced tokamak path to a compact net electric fusion pilot plant’
Authors: Buttery R.J. , Park J.M. , McClenaghan J.T. , Weisberg D. B , Canik J. , Ferron J. , Garofalo A. M , Holcomb C.T. , Leuer J. A , Snyder P.B. , the ATOM Project Team  
Published: October 2022

Abstract
The Comment by Manheimer (submitted to Nucl. Fusion with this response) on our recent paper Buttery et al (2021 Nucl. Fusion
61 046028), has mischaracterized our paper with a series of misleading statements about its content, which it then seeks to refute. It also offers a series of assertions that are unsupported by refereed publication or scientific data—and sometimes in contradiction to the published record and well-established points in the scientific community. In this response we address the main thrusts and themes of the comment, while providing a point-by-point response in the appendix.
FPGA-based fast track reconstruction for the conceptual design of STCF MDC trigger
Authors: Dong W. , Feng C. , Hao Y. , Zhou H. , Zhang E. , Liu S. 
Published: October 2022

Abstract
The Super Tau-Charm Facility (STCF) is a future high
luminosity electron-positron collider proposed in China, with a peak
luminosity greater than 0.5× 1035 cm2s-1 at
center-of-mass energy of 4.0 GeV. The main drift chamber (MDC) is
designed as the central tracker, which provides the charged particle
information for the level-1 trigger. This paper presents an
FPGA-based fast trigger algorithm with the function of finding the
charged particle tracks and reconstructing their transverse momentum
and azimuthal angle. It adopts a two-stage lookup-table-based
pattern matching architecture. The prototype trigger logic was
implemented in a Xilinx XCKU060 FPGA. Test results with simulated
data suggest that the trigger efficiency of J/Ψ events is
better than 96%, and the resolution in the reconstructed track's
azimuthal angle at the interaction point is better than
12 mrad. The overall dead time is 24 ns and the total latency is
339 ns. All these performances meet the requirements of the MDC
trigger in the current conceptual design stage of STCF project.