bluuebunny/crossref_metadata_2025_split huggingface dataset:
« Sarà primavera dai ». L’uso della particelladaiin italiano e in dialetto trevigiano
Authors: Pauletto Franco , Ursi Biagio 
Published: June 2023

This conversation analytic study aims to describe the actions performed by speakers of Italian and Trevigiano – a northern Italian dialect – by using the particledaiin everyday conversations. Our analyses draw on a corpus of formal and informal phone calls, wheredaiappears as preface and at the end of turns that initiate new courses of action, at the end of some responsive turns (or Turn-Constructional Units) and in post-expansions (that is, turns in third position). The actions embodied by these turns – requests, proposals and assessments – have in common the momentary deontic imbalance in favor of the speaker, who tells, asks or proposes to the coparticipant to do something. The particle also accompanies assessments of events to which the speaker has no direct experience (thus from an epistemically subordinate position). This study highlights the fuzziness of the boundaries between deontic and epistemic rights in everyday talk.
“11 for Health” in China – Effects on physical fitness in 9–11‐year‐old schoolchildren
Authors: Li Zhen , Krustrup Peter , Randers Morten Bredsgaard , Xu Bo , Yang Weixin , Huang Zhixiong , Mao Lijuan 
Published: June 2023

ABSTRACTPrevious studies have shown that the school‐based physical activity programme entitled “11 for Health” has been effective in improving the physical fitness, well‐being and overall health profile of European children. The main purpose of the present study was to examine whether the “11 for Health” programme can have a positive impact on the physical fitness of primary school pupils in China. A total of 124 primary school pupils aged 9–11 years were included in the experiment, randomly divided into the experimental group (EG, n = 62) and the control group (CG, n = 62). EG carried out three weekly 35‐minute sessions of small‐sided football for a total of 11 weeks. All data were analysed by a mixed ANOVA with the Student–Newman–Keuls post hoc test. The results showed greater improvements (p<0.001) in EG than CG in relation to systolic blood pressure (−2.9 vs +2.0 mmHg). Moreover, greater improvements (all p<0.05) were observed in postural balance (13 vs 0%), standing long jump (5.0 vs 0.5%), 30‐metre sprint (4.1 vs 1.3%) and Yo‐Yo IR1C running performance (17% vs 6%). In both EG and CG, physical activity enjoyment was observed to be higher (P<0.05) compared to the start of the intervention with increases of 3.7 and 3.9 AU respectively. In conclusion, the study revealed that the “11 for Health” programme has positive effects on aerobic and muscular fitness, and it appears to be a relevant tool in the physical activity promotion in the Chinese school system.
A multi-dimensional nonlinear optimisation method for the TianQin constellation
Authors: Zhang Zheng , Gu Defeng , Zhang Xuefeng , Ye Bobing , Ding Yangyu , Wei Chunbo , Shao Kai , Zhu Jubo 
Published: June 2023

Abstract
TianQin is a geocentric space-based gravitational wave detecting mission that relies on three drag-free spacecraft with a mean inter-spacecraft distance of approximately 1.7 × 105 km. Considering the efficiency requirement of orbit optimisation, we apply a gradient descent method based on variational gradient calculation and the damped Newton iterative method to find the most stable solution of the constellation near the given initial position and velocity of the spacecraft. The efficiency was improved and the number of orbital integrals required for gradient calculation was significantly reduced by over 83%. Based on this optimisation method, we analysed the influence of perturbation on the stability of the TianQin constellation, and Moon’s three-body perturbation was the main factor. In addition, the influence of the orbit elements on the optimisation results was studied. The influence of the initial mean anomaly can be ignored, and the stability of the optimised constellation decreases with an increase in the semi-major axis. Working in the ‘3 months on +3 months off’ observation scheme for 2 years, the optimisation result is the ideal direction when the normal direction of the orbital plane of the TianQin constellation points to RXJ0806.3 + 1527.
Scale invariant curvature perturbations from a spontaneously decaying scalar field
Authors: Lieu R , Shi C-H 
Published: June 2023

Abstract
The evolution of superhorizon curvature perturbations in a two-component interacting Universe is considered. It is found that adiabatic modes conserve the total curvature perturbation

ζ

, unless there are stages in which the rate of dissipation of one component into another is not constant. Moreover, our result shows that when the rate is varying it is possible for ‘isocurvature’ perturbations generated during reheating to alter the amplitude of an adiabatic curvature mode even when the mode is outside the horizon. Specifically, if an indefinitely large rate Γ for massive particles decaying into photons develops rapidly amid vanishingly small initial values (before decay) of the total curvature

ζ
i

and Newtonian potential

Φ
i

, such that the product

Γ

ζ
i

and

Γ

Φ
i

become a pair of finite and universal constants for all superhorizon scales afterwards, Harrison–Zel’dovich scale-invariant power spectrum could be synthesized from a homogeneous state without inflation at all.
Role of polarization switching and domain patterns in the enhanced piezoelectric characteristics of a Pb-free ferroelectric system
Authors: Roy Pranab Kumar , Priya K Shanmuga , Nayak Sanjib , Murugavel P 
Published: June 2023

Abstract
The Pb-free piezoelectric BaTi1−x
Sn
x
O3 system is a promising environmentally friendly ceramic due to its superior piezoresponse properties. The enhanced piezoresponse of this system has a strong correlation with its microscopic and macroscopic characteristics. In this work, the effects of structural and microstructural evolution on the piezoelectric properties of a BaTi0.97Sn0.03O3 (BST) compound are explored. Structural and piezoelectric analysis elucidates that the samples experiencing a field induced tetragonal to orthorhombic phase transformation exhibit better piezoresponse. In addition, the domain configurations have a strong correlation with the synthesis conditions, where the distribution of lamellar and/or stripe types of domain patterns show enhancement in comparison to those of labyrinth type with increase in sintering temperature. Rayleigh analysis confirms that the increase in the irreversible nature of non-180° domain walls can improve the d
33 values of the BST samples. Overall, the results illustrate that the stripe domain configurations and field induced polarization switching from tetragonal to orthorhombic phase favour superior piezoresponse in the samples.
Polarization-sensitive-metasurface-based microwave computational ghost imaging
Authors: He Yuchen , Yu Jianming , Zhu Shitao , Chen Xiaoming , Zhang Anxue , Xu Zhuo 
Published: June 2023

Abstract
Conventional multi-transmitter-based microwave computational ghost imaging (MCGI) systems have suffered from radiation source errors due to the limitation of unit performance in arrays. Radiation source errors can cause inaccuracy of the reference radiation field in MCGI, which will reduce the reconstruction quality of the target image. In this paper, a detailed error analysis of radiation sources in MCGI systems is conducted. The relationships between radiation source errors, reference radiation field and imaging results are determined. Furthermore, to mitigate the influence of radiation source error and other problems in conventional MCGI systems, such as high cost, complex design and implementation, and the interference between array elements, an improved MCGI method based on a broadband polarization-sensitive-metasurface is proposed. The metasurface in this work can modulate the incident signal and distribute the reflected signal randomly in space. Therefore, by changing the polarization angle of the radiation signal, a time-space independent signal is produced, which can achieve better detection effects in the application system. A series of simulations and experiments are performed to validate the analysis results and evaluate the proposed method’s performance. The results show that the target information can be effectively obtained by the proposed method.
Dark photon effect on the rare kaon decay KL⃗π0νν¯
Authors: Wang Xuan-Gong , Thomas A W 
Published: June 2023

AbstractWe present an analysis of the effect of a dark photon on the rare kaon decayKL→π0νν¯. All relevant couplings of the dark photon to the standard model particles are derived explicitly in terms of the dark photon mass and the mixing parameter. We find that the dark photon yields no more than a few percent correction to the standard model branching ratioBr(KL→π0νν¯)in the region of interest.
A phase transition model in dual-amorphous water undergoing liquid–liquid transition
Authors: Li Peizhao , Lu Haibao , Fu Yong-Qing 
Published: June 2023

Abstract
An in-depth understanding of liquid–liquid phase transition (LLPT) in condensed water will gain insight into anomalous behaviors of dual-amorphous condensed water. Despite numerous experimental, molecular simulation, and theoretical studies, it is yet to achieve a widely accepted consensus with convinced evidence in the condensed matter physics for two-state liquid–liquid transition of water. In this work, a theoretical model is proposed based on the Avrami equation, commonly used to describe first-order phase transitions, to elucidate complex homogeneous and inhomogeneous condensation from high-density liquid (HDL) water to low-density liquid (LDL) water for both pure and ionic dual-amorphous condensed water. This model unifies the coupling effects of temperature and electrolyte concentration based on the new theoretical framework. The Adam–Gibbs theory is then introduced to characterize the synergistic motion and relaxation behavior of condensed water. Variations in the configurational entropy under electrostatic forces are further explored, and an analytical 2D cloud chart is developed to visualize the synergistic effect of temperature and electrolyte concentration on the configurational entropy of ionic water. The constitutive relationships among viscosity, temperature, and electrolyte concentration are derived to analyze their synergistic effects under different condensation fractions of LDL and HDL. The Stokes–Einstein relation and free volume theory are further used to analyze diffusion coefficients and densities (or apparent density) during both pure and ionic LLPT. Finally, theoretical results obtained from these models are compared with experimental results reported in literature to validate the accuracy and applicability of the proposed models, which offer significant benefits and advancements in effectively predicting physical property changes of dual-amorphous condensed water.
Health risks from radioactive particles on Cumbrian beaches near the Sellafield nuclear site
Authors: Harrison John D , Oatway Wayne B , Brown Iain K , Hopewell John W 
Published: June 2023

Abstract
A monitoring programme, in place since 2006, continues to recover radioactive particles (<2 mm diameter) and larger objects from the beaches of West Cumbria. The potential risks to members of the public using the beaches are mainly related to prolonged skin contact with or the inadvertent ingestion of small particles. Most particles are classified as either ‘beta-rich’ or ‘alpha-rich’ and are detected as a result of their caesium-137 or americium-241 content. Beta-rich particles generally also contain strontium-90, with 90Sr:137Cs ratios of up to about 1:1, but typically <0.1:1. Alpha-rich particles contain plutonium isotopes, with Pu:241Am α ratios usually around 0.5–0.6:1. ‘Beta-rich’ particles have the greatest potential to cause localised skin damage if held in stationary contact with the skin for prolonged periods. However, it is concluded that only particles of >106Bq of 137Cs, with high 90Sr:137Cs ratios, would pose a significant risk of causing acute skin ulceration. No particles of this level of activity have been found. Inadvertent ingestion of a particle will result in the absorption to blood of a small proportion of the radionuclide content of the particle. The subsequent retention of radionuclides in body organs and tissues presents a potential risk of the development of cancer. For ‘beta-rich’ particles with typical activities (mean 2 × 104 Bq 137Cs, Sr:Cs ratio of 0.1:1), the estimated committed effective doses are about 30 µSv for adults and about 40 µSv for 1 year old infants, with lower values for ‘alpha-rich’ particles of typical activities. The corresponding estimates of lifetime cancer incidence following ingestion for both particle types are of the order of 10−6 for adults and up to 10−5 for infants. These estimates are subject to substantial uncertainties but provide an indication of the low risks to members of the public.
Quantitative gas property measurements by filtered Rayleigh scattering: a review
Authors: Ground Cody R , Hunt Robin L , Hunt Gregory J 
Published: June 2023

Abstract
Filtered Rayleigh scattering (FRS) is a laser-based diagnostic technique used to nonintrusively quantify various thermodynamic properties of a light-scattering gas. The backbone of FRS is the molecular filtering of Rayleigh scattered light. This concept was initially introduced by the atmospheric LIDAR community before being adopted within the aerospace research field in the early 1990s. Since then, FRS has matured into a versatile quantitative diagnostic tool and has found use in a variety of flow regimes ranging from sub- to supersonic speeds in both reacting and nonreacting environments. This adoption can be attributed to the wealth of information that can be obtained via FRS, including the gas density, pressure, temperature, velocity, species composition, or, in some cases, several of these properties at once. This article reviews the current state of FRS methodology in recovering such gas properties. As knowledge of the fundamentals of Rayleigh scattering and spectral light filtering is crucial to the design of an FRS experiment, we begin by briefly reviewing these areas. Subsequently, we conduct a survey of experimental design strategies, assumptions, and data reduction methods used to measure different gas properties using FRS. We conclude the review with a short discussion on quantification of experimental uncertainty and future trends in FRS.
Super-resolution reconstruction method of ground penetrating radar signals based on wavelet theory and its application in reverse time migration
Authors: Liu Xianjun , Ling Tonghua , He Wenchao , Zhang Liang , Bin Yu , Hua Fei , Liu Wenjun 
Published: June 2023

Abstract
The finite difference time domain (FDTD) method was used to solve the Maxwell’s equation to obtain the reverse time migration (RTM) of ground penetrating radar (GPR) signals, namely, the FDTD-RTM. In order to ensure that the correct numerical solution of iterative calculation was achieved, it was necessary to obtain high-resolution signals, which greatly limits the applicability of FDTD-RTM in engineering. Based on the characteristics of wavelet multi-resolution analysis, this study proposed a super-resolution signal reconstruction method to improve signal resolution, with the view to completely solving the problem of FDTD-RTM limitation caused by insufficient signal sampling using GPR. The results of electromagnetic simulation showed that the signals reconstructed by the above method were highly similar to the signals sampled with the same resolution. On this basis, reverse time migration electromagnetic simulation and physical model tests were designed. The results of both experiments showed that the under-sampled GPR signals could achieve FDTD-RTM following super-resolution reconstruction, and that the migration imaging results of the target were basically consistent with the design scheme. The signal super-resolution reconstruction method based on the wavelet theory was thus shown to successfully achieve the overall application of FDTD-RTM in GPR signal analysis.
Ab-initio study about the electronic structure, optical, and transport properties of novel AIn2O4 (A = Ca, Sr, and Na) materials
Authors: Gul Banat , Salman Khan Muhammad , Khan Gulzar , Ahmad Hijaz 
Published: June 2023

Abstract
Here, using first-principles calculations within the framework of density functional theory, we reported results relating to the structural stability, electronic, optical, and thermoelectric properties of AIn2O4 (A = Ca, Sr, and Na) spinel oxides. Among the three materials CaIn2O4, and NaIn2O4 have a direct bandgap semiconductor nature, whereas the SrIn2O4 shows an indirect bandgap semiconductor nature. These materials’ broad energy bandgaps reveal that the bonds present are strongly covalent in nature. The results of the band structures are also strongly supported by the calculated density of states for the three materials, which also validates their semiconducting nature. Our calculated density of states plots shows an overall similarity trend, indicating that the top of the valence bands in the CaIn2O4 materials originate primarily from the p-states and for SrIn2O4, and NaIn2O4 are due to the s-states of the oxygen anions. Additionally, the linear optical constants like the complex dielectric function, the refractive index, the electron energy loss function, the absorption coefficient, and the reflectivity spectra of these novel spinel oxides are computed and examined in detail for their possible applications in optoelectronic devices. The thermoelectric transport parameters were also calculated, and the findings obtained are presented in depth, indicating that these materials are suitable for thermoelectric device applications. Essentially, the present effort must assist the progress of discrete and integrated semiconductor device applications.
Dynamic residual Kaczmarz method for noise reducing reconstruction in magnetic particle imaging
Authors: Zhang Peng , Liu Jie , Li Yimeng , Zhu Tao , Yin Lin , An Yu , Zhong Jing , Hui Hui , Tian Jie 
Published: June 2023

Abstract

Objective. Here, we propose a dynamic residual Kaczmarz (DRK) method as an improved reconstruction method for magnetic particle imaging (MPI) to achieve a better reconstruction quality from high-noise signals. Approach. Based on the Kaczmarz (KZ) method, we introduced a residual vector to select parts of the low-noise equations for reconstruction. In each iteration, a low-noise subset was formulated based on the residual vector. Thus, the reconstruction converged to an accurate result with less noise. Main Results. To evaluate the performance of the proposed method, it was compared with classical Kaczmarz-type methods and state-of-the-art regularization models. The numerical simulation results demonstrate that the DRK method can achieve better reconstruction quality than all other comparison methods at similar noise levels. It can acquire a signal-to-background ratio (SBR) that is five times higher than that of classical Kaczmarz-type methods at a 5 dB noise level. Furthermore, the DRK method can acquire up to 0.7 structural similarity (SSIM) indicators at a 5 dB noise level when combined with the non-negative fused Least absolute shrinkage and selection operator (LASSO) regularization model. In addition, a real experiment based on the OpenMPI data set validated that the proposed DRK method can be applied to real data and perform well. Significance. The experimental results demonstrate that the proposed DRK method can significantly improve the reconstruction quality of MPI when the signals contain high noise. It has the potential to be applied to MPI instruments that contain high signal noise, such as human-sized MPI instruments. It is beneficial for expanding the biomedical applications of MPI technology.
Cross-correlation power spectra and cosmic birefringence of the CMB via photon-neutrino interaction
Authors: Mohammadi Roohollah , Khodagholizadeh Jafar , Sadegh Mahdi , Vahedi Ali , Xue S.S. 
Published: June 2023

Abstract
In the context of the standard model of particles, the weak interaction of cosmic
microwave background (CMB) and cosmic neutrino background (CνB), can generate non-vanishing TB and EB power spectra in the order of one loop forward scattering, in the presence of scalar perturbation, which is in contrast
with the standard scenario cosmology.
Comparing our results with the current experimental data may provide, significant information about the nature of CνB, including CMB-CνB forward scattering for TB, TE, and EB power spectra. To this end, different cases were studied, including Majorana CνB and Dirac CνB. On the other hand, it was shown that the mean opacity due to cosmic neutrino background could behave as an anisotropic birefringent medium and change the linear polarization rotation angle. Considering the contributions from neutrino and anti-neutrino forward scattering with CMB photons (in the case of Dirac neutrino), we introduce relative neutrino and anti-neutrino density asymmetry (δν
= Δnν
/nν
= nν
-nν̅
/nν
). Then, using the cosmic birefringence angle reported by the Planck data release β = 0.30° ± 0.11° (68%C.L.), some constraints can be put on δν
. Also, the value of cosmic birefringence due to Majorana CνB medium is estimated at about β|
ν
≃ 0.2 rad. In this respect, since Majorana neutrino and anti-neutrino are exactly the same, both CB contributions will be added together. However, this value is at least two orders larger than the cosmic birefringence angle reported by the Planck data release, β = 0.30° ± 0.11° (68%C.L.). Finally, we shortly discussed this big inconsistency. It is noteworthy that to calculate the contribution of photon-neutrino forward scattering for cosmic birefringence, we just consider the standard model of particles and the standard scenario of cosmology.
The Impact of Tidal Migration of Hot Jupiters on the Rotation of Sun-like Main-sequence Stars
Authors: Guo Shuai-Shuai 
Published: June 2023

Abstract
The tidal interactions of planets affect the stellar evolutionary status and the constraint of their physical parameters by gyrochronology. In this work, we incorporate the tidal interaction and magnetic braking of the stellar wind into MESA and calculate a large grid of 25,000 models, covering planets with masses of 0.1–13.0 M
J with different orbital distances that orbit late-type stars of different metallicities. We also explore the effect of different stellar initial rotations on the tidal interactions. Our results show that in the case of tidal inward migration, the stellar rotation periods are always lower than that of the star without planet before the planet is engulfed and the difference in the rotation period of its host star always increases with time. After the planet is engulfed, the stellar rotation periods are still lower than that of star without planet, but the difference of periods can be quickly eliminated if the star has a thick convective envelope (smaller mass and larger metallicity), regardless of the mass of the planet and the initial rotation period of the star. In the case of stars with thinner convective envelopes (larger mass and smaller metallicity), the stars will be spun up and remain the faster rotation in a long time. Meanwhile, the planet is easily swallowed and the period differences are large if the initial rotation period of its host star is higher. Finally, we also study the evolution of WASP-19 and estimate the range of tidal quality parameter

Q

*

′

=
(
4.6
±
0.9
)
×

10

6

and the initial semimajor axis as (0.035 ± 0.004) au.