bluuebunny/crossref_metadata_2025_split huggingface dataset:
‘Chile woke up’ (and I can fall asleep no more): The fantasmatic organisation of the desire for change
Authors: Sánchez Gustavo 
Published: July 2024

AbstractIn this article, I adopt the psychoanalytic notion of fantasy to challenge mainstream conceptualisations of the desire for social change. Recent anti-neoliberal uprisings across the world have been interpreted as expressions of the vitalist force of bodies beyond symbolic mediation. This obfuscates the ambivalent unconscious dynamics in the identification with emancipatory events. To counter this, I develop a psychoanalytic conceptualisation of the desire for change. I show the benefits of my approach through an empirical interpretation of the fantasmatic organisation of this desire in the context of the 2019 Chile revolt. By questioning the alleged straightforwardness of the desire for change, my study contributes to a more nuanced approach to emancipatory events.
Space, body and presence
Authors: Jerkovic Tiana 
Published: July 2024

Abstract
The trend towards remote interpreting has caused a radical change for interpreters worldwide, one that has shifted
their workplace from well-known physical spaces to new digital spaces. Research to date has documented specific settings, language
combinations and/or interpreting modes, and it has usually focused on certain forms of remote interpreting (e.g., video remote
interpreting, video relay service). The combinations of different characteristics and factors in remote interpreting are almost
infinite, however, and single terms fail to depict and cover all possible variations. This article proposes an analytical
framework that uses conceptualisations of space, body and presence to analyse interpreting assignments in digital spaces,
regardless of language combination, setting and mode. Two examples are used to illustrate the application of this framework: a
hybrid conference and a meeting in virtual reality (VR), both of them involving sign language interpreting. The use of VR has
undergone a substantial increase in the past few years, having developed rapidly. It is therefore possible that future
interpreting assignments might take place in this new digital space. The application of these two scenarios shows that the
analytical framework can be used both to reflect on past and to anticipate future assignments.
Spatial analysis of multi-frequency SAW beams excited by slanted IDTs on ZnO-SiC heterostructures
Authors: Liou Y-T , Msall M , Hernández-Mínguez A , Santos P V 
Published: July 2024

Abstract
Slanted (or fan-shaped) interdigital transducers (IDTs) with broadband response allow the selective excitation of surface acoustic waves (SAWs) with narrow beam widths and pathways controlled by the excitation frequency. Such SAW-based spatial and frequency control is important for applications in microfluidics, as well as in emerging applications in semiconductor nanostructures. In this contribution, we generate both Rayleigh and Sezawa modes with slanted IDTs on a 4H-SiC substrate coated with a piezoelectric ZnO film. We directly measure the phase wavefronts of narrow SAW beams in the 1200–1260 MHz frequency bandwidth using high-resolution (

<

1
μ

m

) optical interferometry, and discuss the mechanisms that directly affect the propagation direction and phase profiles of the SAW beams. The combination of multimodal and multi-frequency SAW delay lines provides rich opportunities for SAW-based control of low-dimensional systems, such as electrons in epitaxial graphene or spin centers near the surface of the SiC substrates.
Medium dynamic field range linear bipolar spin valve sensor through soft pinning the sensing layer
Authors: Gawade Tejaswini C , Borole Umesh P , Behera Bhagaban , Ghosh S K , Bysakh S , Biswas A , Khan Jakeer , Chowdhury P 
Published: July 2024

Abstract
Magnetic sensor with spin valve-GMR technology with medium dynamic range is designed for a diversity of applications, including linear and rotary position measurements, proximity switches, and current sensors. For this, the sensing layer (SL) of the spin valve stack was modified by a soft pinning layer (SPL) through an exchange bias field created by an antiferromagnetic layer which has a lower blocking temperature than the one that is kept adjacent to the pinned layer. Numerical simulation was carried out to control the bias field by keeping a non-magnetic Ru spacer layer between the SPL and SL layers and the results were experimentally verified. The magnetic sensor was fabricated with linear operating field range of the order ±100 Oe having a sensitivity of the order of 0.1 m V V−1 Oe−1 near zero field. The thermal performance confirms that the device can be operated in the temperature range of −40 ∘C to 125 ∘C and it has a thermal coefficient of voltage around 15 µV V−1∘C−1.
A coarse and fine-grained deep multi view subspace clustering method for unsupervised fault diagnosis of rolling bearings
Authors: Huang Wenjun , Mi Junpeng , Zhao Huanpeng , Wang Yifei , Xue Shenghao , Jin Jianxiang 
Published: July 2024

Abstract
To address the issue of insufficient characterization of fault features in inherent vibration data that affects the performance of unsupervised learning-based fault diagnosis, a coarse and fine-grained deep multi view subspace clustering method (CFG-DMVSC) for unsupervised fault diagnosis of rolling bearings is proposed. The proposed method designs a convolutional autoencoder network based on the Gramian angular field transformation for multi-signal analysis domains. A multi-view coarse-grained self-expressive method based on information entropy is designed to handle differences in information across different views. Furthermore, a fine-grained common and independent information separation loss function based on mutual information is proposed to ensure compactness among multiple views. Both the Case Western Reserve University rolling bearing dataset and privately built bearing fault test bench data demonstrate that, compared to existing methods, the proposed method can perform coarse and fine-grained division in multi-view subspaces, achieving better clustering diagnosis performance on the extracted common information among views.
Experimental study on strengthening the magneto-mechanical coupling effect of X80 steel by weak magnetic excitation
Authors: He Tengjiao , Liao Jiancheng , Liao Kexi , Zhu Hongdong , Tang Jing , Jiang Pan , Xia Guoqiang 
Published: July 2024

Abstract
Current magnetic stress detection techniques are significantly affected by external noise. Magnetic stress detection technology under magnetic field excitation is proposed to weaken the external noise signals on the detection results. In this study, the uniaxial tensile magnetic signal testing system with the excitation magnetic field was developed. The enhancement of the weak magnetic excitation in magnetic signals has been analyzed and the concept of optimal weak excitation magnetic field has been proposed. The response law between triaxial magnetic induction intensity and stress under the excitation magnetic field is determined. The results indicate that the weak excitation magnetic field significantly enhances the magnetic induction signal intensity, more importantly, the linearity of the magnetic signal and stress response is also enhanced. Furthermore, the optimal excitation magnetic field under uniaxial stress states is 600 A m−1, and the corresponding stress-magnetic change rate is 0.002 Oe MPa−1. This study provides a theoretical basis for the long-distance detection of pipelines under weak magnetic excitation. The long-distance magnetic stress detection results of pipelines will become more accurate with the weak magnetic excitation which has a good engineering significance.
Wafer scale WS2 based ultrafast photosensing and memory computing devices for neuromorphic computing
Authors: B Sharmila , Dwivedi Priyanka 
Published: July 2024

Abstract
Integration of optical sensors with memristors can establish the bridge between photosensing and memory devices for Internet of Things (IoT) based applications. This paper presents the realization of integrated sensing and computing memory (ISCM) devices using tungsten disulfide (WS2) and their application for neuromorphic computing. The ISCM device fabrication process is scalable as microfabrication steps followed on 2″ wafer, ISCM device testing and image classification for neuromorphic computing. The photosensing/memory tests were conducted using electrical and optical stimulations (broadband spectrum). The fabricated photosensing device offers a higher responsivity (8 A W−1), higher detectivity (2.85 × 1011 Jones) and fast response speed (80.2/78.3 μs) at 950 nm. The memory device has shown a set/reset time of 51.6/73.5 μs respectively. Further, the repeatability, stability and reproducibility tests were conducted by stimulating the device with different modulating frequencies. The frequency modulation tests confirm that the ISCM devices are stable and perfect candidate for real-time IoT applications. Moreover, the device’s potentiation and depression results were used for image classification with the accuracy of 98.27%. These demonstrated device’s test results provide possibilities to fabricate the smart sensors with integrated functionalities.
Non-uniform critical current and stacking effect remedy for multi-filament REBCO tapes with potential defects
Authors: Cai Tiantian , Wang Mingyang , Hao Luning , Meng Xuan’ang , Chen Haolan , Jiang Junjie , Sheng Jie , Jin Zhijian 
Published: July 2024

Abstract
The high aspect ratio of REBCO tapes has a significant impact on several characteristics in high-temperature superconducting applications, such as critical current and AC loss. Narrow filamentary technology can effectively reduce the impact of magnetic field dependence and enhance the electromagnetic performance of REBCO tapes. However, the existing methods are constrained by the trade-off between the narrow degree of REBCO filaments and high current capacity. Meanwhile, when processing REBCO tapes for large-scale magnets, there is a great possibility that local defects are lurking. A striated narrow-stacked (NS) structure is proposed based on the existing narrowing methods to address these challenges. To verify the validity of this structure, it is imperative to explore the non-uniform critical current and stacking effect on performance for multi-filament REBCO tapes with potential defects. This article introduces a magnetic extended network (MEN) model to analyze the electrical characteristics of striated NS structures with different types of potential defects. Then, by coupling with a 3D finite element method electromagnetic module, the calculation results of the MEN model are visualized and used to analyze the electromagnetic characteristics including current sharing mechanism, magnetic field distribution, and critical current compensation due to stacking effect. It is found that stack structures successfully provide the performance remedy for multi-filament REBCO tapes with potential defects. This study aims to promote the narrowing improvement of REBCO tapes in high-field magnets and high-current applications.
Atomic and electronic structures of Ni64Zr36 metallic glass under high pressure
Authors: Kostera Zuzanna , Antonowicz Jerzy , Dzięgielewski Przemysław 
Published: July 2024

Abstract
Amorphous metallic alloys, also known as metallic glasses (MGs), are materials with unique physical properties resulting from their disordered yet densely packed atomic structure. The packing density of MGs can be further enhanced by external pressure, forcing the decrease of interatomic distances and modifying both the atomic and electronic structure of an alloy. This work reports on classical molecular dynamics (MD) and density functional theory (DFT) studies of Ni64Zr36 MG in a hydrostatic pressure range of 0–120 GPa. The MD simulations revealed that compression leads to enhanced short-range ordering by increasing the contribution of efficiently packed icosahedral-like clusters. According to the DFT calculations, for pressure above 50 GPa, Zr atoms show a significant change in electronic configuration, with a dominant charge transfer from their s and p to d-states and charge redistribution between Ni and Zr atoms. This variation is correlated with the appearance of pairs with significantly shortened interatomic distances, as detected by the MD. We conclude that the enhanced icosahedral ordering in Ni64Zr36 MG is induced not only by the pressure-driven densification of an alloy but also by a variation of its electronic structure.
The cosmic-ray positron excess and its imprint in the Galactic gamma-ray sky
Authors: Rocamora M. , Ascasibar Y. , Sánchez-Conde M.A. , Wechakama M. , de la Torre Luque P. 
Published: July 2024

Abstract
We study the origin of the positron excess observed in the local cosmic-ray spectrum at
high energies, and relate it to the cosmic rays and gamma-ray emission across the entire Galaxy.
In particular, we explore the hypothesis of a single, dominant source accountable for primary
electron-positron pairs. Since we are agnostic about the physical nature of the underlying source
population, we consider four models that are representative of young pulsars, old stars (as a
tracer of millisecond pulsars), and annihilating dark matter particles. In the dark matter
hypothesis, we consider both a cored and a cuspy model for the halo in the Milky Way. Then, we
compare the associated gamma-ray sky maps with Fermi-LAT data. We find that the emission
arising from pulsar wind nebulae is fairly concentrated near the mid plane, and therefore
additional cosmic-ray sources must be invoked to explain the emission at the center of the
Galaxy. If the local positron excess were mainly due to millisecond pulsars, inverse Compton
scattering by the particles injected would naturally account for a non-negligible fraction of the
central gamma-ray emission. The same process would lead to a tension for a standard NFW dark
matter profile, exceeding the gamma-ray data by almost a factor of 2 in some regions of the
Galaxy. Although the results for an isothermal, cored profile are in agreement with these data,
the cross section needed in both cases is around 2 orders of magnitude above the thermal
cross-section, disfavouring the dark matter interpretation.
Discrete orbit effect lengthens merger times for inspiraling binary black holes
Authors: Page Don N. 
Published: July 2024

AbstractThe inspiral merger time for two black holes captured into a nonrelativistic bound orbit by gravitational radiation emission has been often calculated by a formula of Peters that assumes the adiabatic approximation that the changes per orbit are small. However, initially this is not true for the semimajor axis and period of most of the initially highly eccentric orbits, which change significantly during closest approach and much less elsewhere along the orbit. This effect can make the merger time much longer (using other formulas from Peters that do not assume the adiabatic approximation) than that calculated by the adiabatic formula of Peters.
Leptogenesis effects on the gravitational waves background:
interpreting the NANOGrav measurements and JWST constraints on primordial
black holes
Authors: El Bourakadi K. , Chakir H. , Khlopov M.Yu. 
Published: July 2024

Abstract
We demonstrate that the leptogenesis mechanisms, which are associated with B-L symmetry
breaking mechanism has notable effects on the production of gravitational waves. These
gravitational waves align well with the recent observations of a stochastic gravitational wave
background by NANOGrav and pulsar-timing arrays (PTAs). For these gravitational waves to match the
recent measurements, the critical value of the B-L breaking should be around the GUT
scale. Moreover, we consider the generation of primordial gravitational waves from binary systems
of Primordial Black Holes (PBHs) which could be predicted by the recent detection of
gravitational waves. PBHs with specific masses can be responsible for massive galaxy formation
observed at high redshifts reported by the James Webb Space Telescope (JWST). We contemplate the
potential for a shared source between the NANOGrav and JWST observations, namely primordial black
holes. These black holes could serve as seeds of rapid galaxy formation, offering an explanation
for the galaxies observed by JWST.
Isotope effects and Alfvén eigenmode stability in JET H, D, T, DT, and He plasmas
Authors: Tinguely R.A. , Puglia P.G. , Dowson S. , Porkolab M. , Douai D. , Fasoli A. , Frassinetti L. , King D. , Schneider P. ,   JET Contributors
Published: July 2024

Abstract
While much about Alfvén eigenmode (AE) stability has been explored in previous and current tokamaks, open questions remain for future burning plasma experiments, especially regarding exact stability threshold conditions and related isotope effects; the latter, of course, requiring good knowledge of the plasma ion composition. In the JET tokamak, eight in-vessel antennas actively excite stable AEs, from which their frequencies, toroidal mode numbers, and net damping rates are assessed. The effective ion mass can also be inferred using measurements of the plasma density and magnetic geometry. Thousands of AE stability measurements have been collected by the Alfvén Eigenmode Active Diagnostic in hundreds of JET plasmas during the recent Hydrogen, Deuterium, Tritium, DT, and Helium-4 campaigns. In this novel AE stability database, spanning all four main ion species, damping is observed to decrease with increasing Hydrogenic mass, but increase for Helium, a trend consistent with radiative damping as the dominant damping mechanism. These data are important for confident predictions of AE stability in both non-nuclear (H/He) and nuclear (D/T) operations in future devices. In particular, if radiative damping plays a significant role in overall stability, some AEs could be more easily destabilized in D/T plasmas than their H/He reference pulses, even before considering fast ion and alpha particle drive. Active MHD spectroscopy is also employed on select HD, HT, and DT plasmas to infer the effective ion mass, thereby closing the loop on isotope analysis and demonstrating a complementary method to typical diagnosis of the isotope ratio.
Plasma performance and operational space with an RMP-ELM suppressed edge
Authors: Paz-Soldan C. , Gu S. , Leuthold N. , Lunia P. , Xie P. , Kim M.W. , Kim S.K. , Logan N.C. , Park J.-K. , Suttrop W. , Sun Y. , Weisberg D.B. , Willensdorfer M. ,   the ASDEX Upgrade Team,   the DIII-D Team,   the EAST Team,   the KSTAR Team
Published: July 2024

Abstract
The operational space and global performance of plasmas with edge-localized modes (ELMs) suppressed by resonant magnetic perturbations (RMPs) are surveyed by comparing AUG, DIII-D, EAST, and KSTAR stationary operating points. RMP-ELM suppression is achieved over a range of plasma currents, toroidal fields, and RMP toroidal mode numbers. Consistent operational windows in edge safety factor are found across devices, while windows in plasma shaping parameters are distinct. Accessed pedestal parameters reveal a quantitatively similar pedestal-top density limit for RMP-ELM suppression in all devices of just over

3
×

10

19

m−3. This is surprising given the wide variance of many engineering parameters and edge collisionalities, and poses a challenge to extrapolation of the regime. Wide ranges in input power, confinement time, and stored energy are observed, with the achieved triple product found to scale like the product of current, field, and radius. Observed energy confinement scaling with engineering parameters for RMP-ELM suppressed plasmas are presented and compared with expectations from established H and L-mode scalings, including treatment of uncertainty analysis. Different scaling exponents for individual engineering parameters are found as compared to the established scalings. However, extrapolation to next-step tokamaks ITER and SPARC find overall consistency within uncertainties with the established scalings, finding no obvious performance penalty when extrapolating from the assembled multi-device RMP-ELM suppressed database. Overall this work identifies common physics for RMP-ELM suppression and highlights the need to pursue this no-ELM regime at higher magnetic field and different plasma physical size.
Radon removal commissioning of the PandaX-4T cryogenic distillation system
Authors: Cui Xiangyi , Wang Zhou , Li Jiafu , Li Shuaijie , Si Lin , Ju Yonglin , Ma Wenbo , Liu Jianglai , Zhao Li , Ji Xiangdong , Yan Rui , Sha Haidong , Huang Peiyao , Wang Xiuli , Liu Huaxuan 
Published: July 2024

AbstractThe PandaX-4T distillation system, designed for the removal of krypton and radon from xenon, is evaluated for its radon removal efficiency using a222Rn source during the online distillation process. The PandaX-4T dark matter detector is employed to monitor the temporal evolution of radon activity. To determine the radon reduction factor, the experimental data of radon atoms introduced into and bypassed the distillation system is compared. The results indicate that the PandaX-4T distillation system achieves a radon reduction factor exceeding 190 at the flow rate of 10 slpm and the reflux ratio of 1.44. Gas-only online distillation process of a flow rate of 20 slpm is also conducted without observing significant reduction of radon levels in the detector. This observation suggests that the migration flow of radon atoms from the liquid phase to the gas phase is limited, and the flow rate of gas circulation and duration of the process are insignificant compared to the total xenon mass of 5.6 tons in the detector. This study provides the experimental data to support the efficient removal of radon at ∼Bq level using the PandaX-4T distillation system, which is the prerequisite of the radon background control in the detector. The further operation with higher flow rate will be applied for the upcoming science run in PandaX-4T.