bluuebunny/crossref_metadata_2025_split huggingface dataset:
Invasive dynamic electrical impedance myography during 100 s of moderate contraction in rats’ gastrocnemius muscle
Authors: Coutinho A. B. B. , Jotta B. , Pino A. V. , Souza M. N. 
Published: September 2023

Goal: The present study aimed to investigate the behavior of dynamic electrical impedance myography (dEIM) signals during a 100-s period of the dynamic contraction of Wistar rats’ gastrocnemius evoked by electrical stimulation and to link the variations in bioimpedance with muscular energy systems. Methods: Muscle contraction used 30% of the maximum muscular force and persisted for 100 s, along which dynamic bioimpedance signals were acquired. Based on the bioimpedance signals, two parameters, ΔZc and ΔZpc, were calculated to allow the analysis of their changes with the energy systems that supplied adenosine triphosphate (ATP) to the muscle. ΔZc indicated the variation of impedance of a twitch cycle compared to the values observed during the rest period preceding the cycle, and ΔZpc indicated slow bioimpedance variations compared to the values obtained during the rest period. Results: The results indicated that ΔZc followed the force behavior, achieving a change rate of ∼14%. This parameter was associated with instantaneous impedance changes owing to the occurrence of each twitch. Conclusion: Although the findings of this study were linked to energy system processes, future studies are required for improving the understanding of the underlying mechanisms involved in dEIM. Significance: The results contributed to understanding the relation of energy systems that supply ATP to the muscles with dEIM variations that occurred during muscle activity.
A Beale–Kato–Majda criterion for free boundary incompressible ideal magnetohydrodynamics
Authors: Fu Jie , Hao Chengchun , Yang Siqi , Zhang Wei 
Published: September 2023

We prove a continuation criterion for the free boundary problem of three-dimensional incompressible ideal magnetohydrodynamic (MHD) equations in a bounded domain, which is analogous to the theorem given in Beale, Kato, and Majda [Commun. Math. Phys. 94, 61–66 (1984)]. We combine the energy estimates of our previous works [C. Hao and T. Luo, Arch. Ration. Mech. Anal. 212(3), 805–847 (2014)] on incompressible ideal MHD and some analogous estimates in Ginsberg [SIAM J. Math. Anal. 53, 3366–3384 (2021); arXiv:1811.06154] to show that the solution can be continued as long as the curls of the magnetic field and velocity, the second fundamental form and injectivity radius of the free boundary and some norms of the pressure remain bounded, provided that the Taylor-type sign condition holds.
Where you come from matters: familial class background plays a greater role for status-related judgements in France than in the United States (Tu procedencia importa: la clase social familiar de pertenencia tiene más peso en los juicios sobre el estatus social en Francia que en Estados Unidos)
Authors: Gobel Matthias S. , Kim Heejung S. 
Published: September 2023

The present research investigated to what extent two Western cultures, France and the United States, differed in making status-related judgements based on a person’s familial class background. Consistent with the eco-historical origins of French and American status beliefs, Study 1 ( N = 77) showed that French more than American participants perceived an unknown community member with higher (compared to lower) familial class background to have greater status-related characteristics. Study 2 ( N = 213) showed that French more than American participants also expected a job candidate with higher (compared to lower) familial class background to attain higher status in the workplace. Study 3 ( N = 231) experimentally manipulated upward mobility beliefs in a monocultural sample of American participants. Results showed that when participants were made to believe that upward mobility in society was low (but not when high), information about a person’s familial class background was the basis of status-related judgements. Our findings speak to the importance that sociocultural contexts play for the understanding of different aspects of social class.
Morphology-independent characterization method of postmerger gravitational wave emission from binary neutron star coalescences
Authors: Tringali M C , Puecher A , Lazzaro C , Ciolfi R , Drago M , Giacomazzo B , Vedovato G , Prodi G A 
Published: September 2023

Abstract
Gravitational waves (GWs) emitted during the coalescence of binary neutron star (BNS) systems carry information about the equation of state (EoS) describing the extremely dense matter inside neutron stars (NSs). In particular, the EoS determines the fate of the binary after the merger: a prompt collapse to black hole (BH), or the formation of a NS remnant that is either stable or survives up to a few seconds before collapsing to a BH. Determining the evolution of a BNS system will therefore place strong constraints on the EoS. We present a morphology-independent method, developed in the framework of the coherentWaveBurst analysis of signals from ground-based interferometric detectors of GWs. The method characterizes the time-frequency postmerger GW emission from a BNS system, and determines whether, after the merger, it formed a remnant NS or promptly collapsed to a BH. We measure the following quantities to characterize the postmerger emission: ratio of signal energies and match of luminosity profile in different frequency bands, weighted central frequency and bandwidth. From these quantities, based on the study of signals simulated through injections of numerical relativity waveforms, we build a statistics to discriminate between the different scenarios after the merger. Finally, we test our method on a set of signals simulated with new models, to estimate its efficiency as a function of the source distance.
Multi-physical quantity sensing based on magnetized plasma spherical photonic crystals with evanescent wave
Authors: Xu Jie , Zhu Tian-Qi , Zhang Hai-Feng 
Published: September 2023

Abstract
In this paper, a novel structure of magnetized plasma spherical photonic crystals is proposed that enables the development of sensors based on the evanescent wave principle. This sensor structure integrates plasma with two isotropic media and applies periodic boundary conditions. Leveraging the principle of the evanescent wave, when the incident light is perpendicular to the interface of a medium with high optical density or thickness and the incident angle exceeds a critical angle, the transfer matrix method is utilized to compute the sharp peaks in the transmission spectrum. Subsequently, sensors produced using these sharp absorption peaks can detect the magnetic induction intensity, plasma frequency, and solution concentration of serum creatinine. The sensitivity and quality factors of these measurements are 8.35 × 1010 T−1, 3583, 1.5 × 10−4 (2πc/d)−1, 2970, 3.55, and 22 824, respectively. Furthermore, a detection limit of 9.155 02 × 10−6 RIU should be taken into account to ensure the normal operation of serum creatinine detection, satisfying the minimum requirements of biosensing.
Remaining useful life prediction for space bearing with cage friction fault based on data pre-screening and gated recurrent unit
Authors: Wang Jianwen , Pan Qiang , He Tian , Wang Hong , Qing Tao 
Published: September 2023

Abstract
The remaining useful life (RUL) of bearings in space inertia actuators is crucial for performance maintenance requirements. But it is quite difficult to accurately predict the RUL of space bearings due to the significant intermittency and nonstationary properties caused by cage friction faults commonly occurring during the operation of the actuator. This paper proposes a data-driven method for RUL prediction of space bearings by incorporating the gated recurrent unit network with a novel data pre-screening approach. In the proposed method, a stacked autoencoder and clustering approach are introduced into the data pre-processing method, and a health index called Overrun-Distance is constructed for lifetime assessment. To verify the proposed method, a series of vibration tests on flywheels equipped with space bearings are conducted and used for RUL evaluation. The results show that the proposed RUL prediction method is applicable to space bearings for RUL prediction with high accuracy and effectiveness.
Editorial for focus on manipulations of atomic and molecular layers and its applications in energy, environment sciences and optoelectronic devices
Authors: Chang Sheng Hsiung , Meng Xiangbo , Liu Jian , Tsai Dung-Sheng , Wang Xinwei , Chuang Chiashain , Chen Cheng-Ying , Li Aidong 
Published: September 2023

Abstract
This Focus aims at showcasing the significance of manipulating atomic and molecular layers for various applications. To this end, this Focus collects 15 original research papers featuring the applications of atomic layer deposition, chemical vapor deposition, wet chemistry, and some other methods for manipulations of atomic and molecular layers in lithium-ion batteries, supercapacitors, catalysis, field-effect transistors, optoelectronics, and others.
Transition between continuous and discrete spectra of high-wavenumber turbulence in neutral gas pressure scan experiments on a linear magnetized plasma
Authors: Kawachi Yuichi , Sasaki Makoto , Nishizawa Takashi , Kosuga Yusuke , Terasaka Kenichiro , Inagaki Shigeru , Yamada Takuma , Kasuya Naohiro , Moon Chanho , Nagashima Yoshihiko , Fujisawa Akihide 
Published: September 2023

Abstract
Spectral transition between continuous and discrete spectra has been observed in high-wavenumber turbulence excitation experiments. The transition appeared in neutral gas scanning, which shows that continuous spectra dominate at low gas pressures and discrete spectra dominate at high gas pressures. Both spectra have well smaller spatial scale than the ion effective Larmor radius. The discrete spectra have 6–11 peaks and maximum peak values at 4th or 5th peak. Correlation length analysis reveals that the continuous component is turbulent and the discrete component is coherent. The bicoherence analysis shows that the turbulent spectra have finite nonlinear coupling, whereas the discrete spectra have no corresponding coupling.
Isotope effect in plasmas driven by ECR modules towards H– and D– production
Authors: Mitrou M , Svarnas P , Béchu S , Aleiferis S 
Published: September 2023

Abstract
Optimization of negative ion sources operated with deuterium may be limited by the lack of data on fundamental processes. Insight can be obtained from studies focusing on a direct comparison of

H

2

and

D

2

plasmas. Herein, the ECR volume negative ion source ‘Prometheus I’ operates with both

H

2

and

D

2

gases and the properties of the generated plasmas are probed by means of electrostatic probe and laser induced photo-detachment. A parametric study, involving pressure and microwave (2.45 GHz) power variation, reveals similar qualitative trends for most of the plasma properties in both gases. However, quantitively, differences do exist for the plasma potential, the electron density and temperature, and the negative ion to electron density ratio. Electron energy distribution functions are thus isotope dependent. Overall, nearly the same maximal

H

−

and

D

−

negative ion densities are achieved (i.e.

4
×
1

0

9

c

m

−
3

). The results are eventually elucidated with respect to the ECR heating mechanism, and the production and destruction paths of the negative ions.
Catalysis of entanglement and other quantum resources
Authors: Datta Chandan , Varun Kondra Tulja , Miller Marek , Streltsov Alexander 
Published: September 2023

Abstract
In chemistry, a catalyst is a substance which enables a chemical reaction or increases its rate, while remaining unchanged in the process. Instead of chemical reactions, quantum catalysis enhances our ability to convert quantum states into each other under physical constraints. The nature of the constraints depends on the problem under study and can arise, e.g. from energy preservation. This article reviews the most recent developments in quantum catalysis and gives a historical overview of this research direction. We focus on the catalysis of quantum entanglement and coherence, and also discuss this phenomenon in quantum thermodynamics and general quantum resource theories. We review applications of quantum catalysis and also discuss the recent efforts on universal catalysis, where the quantum state of the catalyst does not depend on the states to be transformed. Catalytic embezzling is also considered, a phenomenon that occurs if the catalyst’s state can change in the transition.
Design and development of a piezoelectric-hydraulic hybrid actuator with quarter-wavelength tubes
Authors: Zhang Jun Jian , Qian Min , Pan Qiaosheng , Feng Zhihua 
Published: September 2023

Abstract
The piezoelectric hydraulic actuator is a hybrid device consisting of a hydraulic pump driven by a piezoelectric stack connected to a hydraulic cylinder. For this type of piezoelectric actuator, the inertial force caused by the flow pulsation of the liquid will inhibit the movement of the piezoelectric vibrator and reduce its output performance. To solve these issues, two tubes were embedded into the piezoelectric-hydraulic hybrid actuation system for the first time to act as mechanical bandstop filters by interfering with the propagation of acoustic waves. The acoustic power transmission loss of the tube is derived from the one-dimensional wave equation. According to the experimental results, when the excitation frequency is close to the optimal operating frequency corresponding to the tubes, the liquid pulsation rate is reduced, the influence of inertial force on the actuator is weakened, and the output performance is relatively significantly improved. This strategy finally leads to a maximum no-load velocity of 153.5 mm s−1 and a maximum blocking force of 261.5 N for the hybrid actuator with 300 mm tubes; the maximum no-load velocity and blocking force of the hybrid actuator with 500 mm tubes are 94.45 mm s−1 and 230 N, respectively. Furthermore, this strategy can be used in other electrohydraulic actuators to enhance their capabilities.
Gaussian variational method to Fermi-Hubbard model in one and two dimensions
Authors: Shi Yue-Ran , He Yuan-Yao , Liu Ruijin , Zhang Wei 
Published: September 2023

Abstract
The study of ground-state properties of the Fermi-Hubbard model is a long-lasting task in the research of strongly correlated systems, and is crucial for the understanding of notable quantum phenomena including superconductivity and magnetism. Owing to the exponentially growing complexity of the system, a quantitative analysis usually demands high computational cost and is restricted to small samples, especially in two or higher dimensions. Here, we introduce a variational method in the frame of fermionic Gaussian states, and obtain the ground states of one- and two-dimensional attractive Hubbard models via imaginary-time evolution. We calculate the total energy and benchmark the results in a wide range of interaction strength and filling factor with those obtained via exact two-body results, the density matrix renormalization group based on matrix product states (MPS), and projector Quantum Monte Carlo (QMC) method. For both 1D and 2D cases, the Gaussian variational method presents accurate results for total energy with a maximum systematic error

∼

4
%

in the intermediate interaction region. The accuracy of these results has negligible dependence on the system size. We further calculate the double occupancy and find excellent agreement with MPS and QMC, as well as the experimental results of cold quantum gases in optical lattices. The results suggest that the Gaussian pairing state is a good approximation to the ground states of attractive Hubbard model, in particular in the strong and weak coupling limits. Moreover, we generalize the method to the attractive Hubbard model with a finite spin-polarization, which can be mapped to the repulsive interaction case via particle-hole transformation, and obtain accurate results of ground state energy and double occupancy. Our work demonstrates the ability of the Gaussian variational method to extract ground state properties of strongly correlated many-body systems with negligible computational cost, especially of large size and in higher dimensions.
The Steward Observatory LEO Satellite Photometric Survey
Authors: Krantz Harrison , Pearce Eric C. , Block Adam 
Published: September 2023

Abstract
The Steward Observatory LEO Satellite Photometric Survey is a comprehensive observational survey to characterize the apparent brightness of the Starlink and OneWeb low Earth orbit satellites and evaluate the potential impact on astronomy. We report the results of over 16,000 independent measurements of nearly 2800 individual satellites. In addition to photometry, we also measured the astrometric position of each satellite and evaluated the accuracy of predicting satellite position with the available two-line element sets. The apparent brightness of a satellite seen in the sky is not constant and depends on the Sun-satellite-observer geometry. To capture this, we designed the survey to create an all-geometries set of measurements to fully characterize the brightness of each population of satellites as seen in the sky. We visualize the data with sky-plots that show the correlation of apparent brightness with on-sky position and relative Sun-satellite-observer geometry. The sky-plots show where in the sky the satellites are brightest. In addition to visual magnitudes, we also present two new metrics: the expected photon flux and the effective albedo. The expected photon flux metric assesses the potential impact on astronomy sensors by predicting the flux for a satellite trail in an image from a theoretical 1 m class telescope and sensor. The effective albedo metric assesses where a satellite is more reflective than baseline, which ties to the physical structure of the satellite and indicates the potential for brightness-reducing design changes. We intend to use this methodology and resulting data to inform the astronomy community about satellite brightness. Observing programs use a variety of telescopes and instruments and look at different parts of the sky. With the expected photon flux metric and a complete all-sky characterization of satellite brightness, observers can evaluate the potential impacts to their projects and possibly avoid the worst effects.
Graphical representations and worm algorithms for the O(N) spin model
Authors: Liu Longxiang , Zhang Lei , Tan Xiaojun , Deng Youjin 
Published: September 2023

Abstract
We present a family of graphical representations for the O(N) spin model, where N ≥ 1 represents the spin dimension, and N = 1, 2, 3 corresponds to the Ising, XY and Heisenberg models, respectively. With an integer parameter 0 ≤ ℓ ≤ N/2, each configuration is the coupling of ℓ copies of subgraphs consisting of directed flows and N − 2ℓ copies of subgraphs constructed by undirected loops, which we call the XY and Ising subgraphs, respectively. On each lattice site, the XY subgraphs satisfy the Kirchhoff flow-conservation law and the Ising subgraphs obey the Eulerian bond condition. Then, we formulate worm-type algorithms and simulate the O(N) model on the simple-cubic lattice for N from 2 to 6 at all possible ℓ. It is observed that the worm algorithm has much higher efficiency than the Metropolis method, and, for a given N, the efficiency is an increasing function of ℓ. Besides Monte Carlo simulations, we expect that these graphical representations would provide a convenient basis for the study of the O(N) spin model by other state-of-the-art methods like the tensor network renormalization.
Generation of spatially entangled states in a photonic molecule containing a quantum dot
Authors: Tsukanov A V , Kateev I Yu 
Published: September 2023

Abstract
A model of a quantum network node based on a photonic molecule (PM) containing a quantum dot, which acts as a source and a router of single photons and correlated photon pairs, is proposed. Methods for coherent control of spatially entangled states of the node by local modification of its optical properties are studied. The fidelity of reproduction of these states and their generation time are calculated. The possibility of temperature tuning of an optical spectrum of triangular and square PMs consisting of four GaAs microdisks is shown. The dependence of eigenmode wavelengths on temperature and the distance between the microdisks are calculated.
Effect of entanglement in the generalized photon subtraction scheme
Authors: Bashmakova E N , Korolev S B , Golubeva T Yu 
Published: September 2023

Abstract
The paper considers the possibility of generating different non-Gaussian states using the entangled state photon measurement scheme. In the paper, we have proposed a way to explicitly find the wave function and the Wigner function of the output state of this scheme. Moreover, the solutions found are not restricted to any particular case, but have maximum generality (depend on the number of measured photons and on all parameters of the scheme). Such a notation allowed us to carry out a complete analysis of the output states, depending on the scheme parameters. Using explicit expressions, we have analyzed the magnitude of non-Gaussianity of the output states, and we have revealed which particular states can be obtained in the proposed scheme. We have considered in detail a particular case of measurement (single photon measurement) and have shown that using explicit expressions for the output state wave function one can find scheme parameters to obtain states suitable for quantum error correction codes with a large fidelity value and high probability. The Schrodinger’s cat state with amplitude α = 2 can be obtained with fidelity F ≈ 0.88 and probability 18 percent, and the squeezed Schrodinger’s cat state (α = 0.5, R = 1) with fidelity F ≈ 0.98 and probability 22%.