bluuebunny/crossref_metadata_2025_split huggingface dataset:
Rapid-response, low-detection-limit, positive-negative air pressure sensing: GaN chips integrated with hydrophobic PDMS films
Authors: Gui Sizhe , Yu Binlu , Luo Yumeng , Chen Liang , Li Kwai Hei 
Published: November 2024

AbstractDespite the importance of positive and negative pressure sensing in numerous domains, the availability of a single sensing unit adept at handling this dual task remains highly limited. This study introduces a compact optical device capable of swiftly and precisely detecting positive and negative pressures ranging from −35 kPa to 35 kPa. The GaN chip, which serves as a core component of the device, is monolithically integrated with light-emitting and light-detecting elements. By combining a deformable PDMS film coated with a hydrophobic layer, the chip can respond to changes in optical reflectance induced by pressure fluctuations. The integrated sensing device has low detection limits of 4.3 Pa and −7.8 Pa and fast response times of 0.14 s and 0.22 s for positive and negative pressure variations, respectively. The device also demonstrates adaptability in capturing distinct human breathing patterns. The proposed device, characterized by its compactness, responsiveness, and ease of operation, holds promise for a variety of pressure-sensing applications.
Attosecond transient interferometry
Authors: Kneller Omer , Mor Chen , Klimkin Nikolai D. , Yaffe Noa , Krüger Michael , Azoury Doron , Uzan-Narovlansky Ayelet J. , Federman Yotam , Rajak Debobrata , Bruner Barry D. , Smirnova Olga , Patchkovskii Serguei , Mairesse Yann , Ivanov Misha , Dudovich Nirit 
Published: November 2024

Abstract
Attosecond transient absorption resolves the instantaneous response of a quantum system as it interacts with a laser field, by mapping its sub-cycle dynamics onto the absorption spectrum of attosecond pulses. However, the quantum dynamics are imprinted in the amplitude, phase and polarization state of the attosecond pulses. Here we introduce attosecond transient interferometry and measure the transient phase, as we follow its evolution within the optical cycle. We demonstrate how such phase information enables us to decouple the multiple quantum paths induced in a light-driven system, isolating their coherent contribution and retrieving their temporal evolution. Applying attosecond transient interferometry reveals the Stark shift dynamics in helium and retrieves long-term electronic coherences in neon. Finally, we present a vectorial generalization of our scheme, theoretically demonstrating the ability to isolate the underlying anomalous current in light-driven topological materials. Our scheme provides a direct insight into the interplay of light-induced dynamics and topology. Attosecond transient interferometry holds the potential to considerably extend the scope of attosecond metrology, revealing the underlying coherences in light-driven complex systems.
New mitochondrial genomes of three whip spider species from the Amazon (Arachnida, Amblypygi) with phylogenetic relationships and comparative analysis
Authors: Nogueira Acácio Freitas , Pires Eder S. , Oliveira Guilherme , Trevelin Leonardo Carreira , Vasconcelos Santelmo 
Published: November 2024

AbstractThe complete mitochondrial genomes of the whip spiders Charinus carajas, C. ferreus, and Heterophrynus longicornis were sequenced, annotated, and compared with other mitogenomes of whip spiders and arachnids. The three new mitogenomes have the 37 genes usually observed in Metazoa: 13 protein-coding genes (PCGs), 22 transfer RNAs (tRNAs), and two ribosomal RNAs (rRNAs), plus a non-coding control region (CR). Most PCGs presented an ATN start codon, except cox1 in both Charinus species, initiating with TTA. Most PCGs terminated with stop codons TAA or TAG, except nad5 of C. carajas and cox3 of H. longicornis, which presented an incomplete stop codon (T). The Ka/Ks ratios were less than one for all the PCGs, indicating these genes are under purifying selection. All the tRNAs, except for serine 1 (trnS1), had the typical cloverleaf-shaped secondary structure. All the phylogenetic analyses resolved Charinus carajas and C. ferreus as monophyletic groups. Nonetheless, we did not recover the monophyly of Heterophrynus longicornis. The phylogenies under partitioned models did not recover suprageneric taxonomic groups as clades, but the Bayesian inference under the CAT infinite mixture model recovered the family Phrynidae and the superfamily Phrynoidea as monophyletic groups.
A hybrid technique to enhance the rainfall-runoff prediction of physical and data-driven model: a case study of Upper Narmada River Sub-basin, India
Authors: Kumar Sachin , Choudhary Mahendra Kumar , Thomas T. 
Published: November 2024

AbstractAccurate streamflow prediction is crucial for effective water resource management and planning. This study aims to enhance streamflow simulation accuracy in the data-scarce Upper Narmada River Basin (UNB) by proposing a novel hybrid approach, ANNHybrid, which combines a physically-based model (WEAP) with a data-driven model (ANN). The WEAP model was calibrated and validated using observed streamflow data, while the ANN model was trained and tested using meteorological variables and simulated streamflow. The ANNHybrid model integrates simulated flow from both WEAP and ANN to improve prediction accuracy. The results demonstrate that the ANNHybrid model outperforms the standalone WEAP and ANN models, with higher NSE values of 95.5% and 92.3% during training and testing periods, respectively, along with an impressive R2 value of 0.96. The improved streamflow predictions can support better decision-making related to water allocation, reservoir operations, and flood and drought risk assessment. The novelty of this research lies in the development of the ANNHybrid model, which leverages the strengths of both physically-based and data-driven approaches to enhance streamflow simulation accuracy in data-limited regions. The proposed methodology offers a promising tool for sustainable water management strategies in the UNB and other similar catchments.
Invariant solutions, lie symmetry analysis, bifurcations and nonlinear dynamics of the Kraenkel-Manna-Merle system with and without damping effect
Authors: Aldwoah Khaled , Ahmad Shabir , Alqarni Faez , Younis Jihad , Hashim Hussam E. , Hleili Manel 
Published: November 2024

AbstractThis work investigates the Kraenkel-Manna-Merle (KMM) system, which models the nonlinear propagation of short waves in saturated ferromagnetic materials subjected to an external magnetic field, despite the absence of electrical conductivity. The study aims to explore and derive new solitary wave solutions for this system using two distinct methodological approaches. In the first approach, the KMM system is transformed into a system of nonlinear ordinary differential equations (ODEs) via Lie group transformation. The resulting ODEs are then solved analytically using a similarity invariant approach, leading to the discovery of various types of solitary wave solutions, including bright, dark, and exponential solitons. The second approach involves applying wave and Galilean transformations to reduce the KMM system to a system of two ODEs, both with and without damping effects. This reduced system is further analyzed to investigate its bifurcation behavior, sensitivity to initial conditions, and chaotic dynamics. The analysis reveals the presence of strange multi-scroll chaotic dynamics in the presence of damping and off-boosting dynamics without damping. In addition to these approaches, the study also applies the planar dynamical theory to obtain further new soliton solutions of the KMM system. These solitons include bright, kink, dark, and periodic solutions, each of which has been visualized through 3D and 2D graphs. The results of this research provide new insights into the dynamics of the KMM system, with potential applications in magnetic data storage, magnonic devices, material science, and spintronics.
Humans underestimate the movement range of their own hands
Authors: Pilacinski Artur , Vandenberghe Antoine , Andrietta Gabriella , Vannuscorps Gilles 
Published: November 2024

AbstractMotor planning and motor imagery are assumed to use veridical internal representations of the biomechanical properties of our limbs. Here, we report that people underestimate their hands’ range of motion. We used two tasks probing representations of own motion range, estimation and imagery, in which participants were supposed to judge their rotational hand movement ranges. In both tasks participants’ judgments were underestimated in three out of four cardinal directions. We suggest that this representational bias provides an optimal balance between movement efficiency and safety in face of the inherently stochastic nature of movement execution.
A motion compensation method for the single transmitter and multiple receivers mobile radar system
Authors: Lian Qijun , Da Kai , Song Zhiyong , Wang Ping 
Published: November 2024

AbstractThe single transmitter and multiple receivers (STMR) mobile radar system is a special distributed radar system, which has stronger detection and survival capabilities. However, the high‐speed movement of the radar platforms easily produce the across‐range cell migration (RCM) of radar echo signal, which cause envelope shift effects within the coherent processing interval. Here, a motion compensation method for the STMR mobile radar system in the sea environment, to solve the problem of RCM is proposed. First, the target points and clutter points with the same Doppler velocity are obtained by the radon Fourier transform method. Second, using the range/Doppler difference between clutter and target under multi‐radar views, the target and clutter points are separated by the spatial range mapping. The simulation results show that the method can effectively improve the coherent accumulation effect of the target in the sea environment with low signal‐to‐clutter ratio (SCR).
First study of the supernova remnant population in the Large Magellanic Cloud with eROSITA
Authors: Zangrandi Federico , Jurk Katharina , Sasaki Manami , Knies Jonathan , Filipović Miroslav D. , Haberl Frank , Kavanagh Patrick , Maitra Chandreyee , Maggi Pierre , Saeedi Sara , Bernreuther Dominic , Koribalski Bärbel S. , Points Sean , Staveley-Smith Lister 
Published: November 2024

Aims. The all-sky survey carried out by the extended Roentgen Survey with an Imaging Telescope Array (eROSITA) on board Spektrum-Roentgen-Gamma (Spektr-RG, SRG) has provided spatially and spectrally resolved X-ray data of the entire Large Magellanic Cloud (LMC) and its immediate surroundings in the soft X-ray band down to 0.2 keV, with an average angular resolution of 26″ in the field of view. In this work, we study the supernova remnants (SNRs) and SNR candidates in the LMC using data from the first four all-sky surveys (eRASS:4). From the X-ray data, in combination with results at other wavelengths, we obtain information about the SNRs, their progenitors, and the surrounding interstellar medium (ISM). Studying the entire population of SNRs in a galaxy aids in understanding the underlying stellar populations, the environments in which the SNRs are evolving, and the stellar feedback on the ISM.
Methods. The eROSITA telescopes are the best instruments currently available for the study of extended soft sources such as SNRs in an entire galaxy due to their large field of view and high sensitivity in the softer part of the X-ray band. We applied the Gaussian gradient magnitude filter to the eROSITA images of the LMC in order to highlight the edges of the shocked gas and find new SNRs. We visually compared the X-ray images with those of their optical and radio counterparts to investigate the true nature of the extended emission. The X-ray emission was evaluated using the contours with respect to the background, while for the optical, we used line ratio diagnostics and non-thermal emission in the radio images. We used the Magellanic Cloud Emission Line Survey for the optical data. For the radio comparison, we used data from the Australian Square Kilometre Array Pathfinder survey of the LMC. Using the star formation history derived from the near-IR photometry of the VISTA survey of the Magellanic Clouds, we investigated the possible progenitor type of the new SNRs and SNR candidates in our sample.
Results. We present the most up-to-date catalogue of SNRs in the LMC. Previously known SNRs and SNR candidates were detected with a 1σ significance down to a surface brightness of Σ [0.2–5.0 keV] = 3.0 × 10−15 erg s−1 cm−2 arcmin−2 and were examined. The eROSITA data allowed us to confirm one of the previous candidates as an SNR. We confirm three newly detected extended sources as new SNRs, while we propose 13 extended sources as new X-ray SNR candidates. We also present the analysis of the follow-up XMM-Newton observation of MCSNR J0456–6533 discovered with eROSITA. Among the new candidates, we propose J0614–7251 (4eRASSU J061438.1–725112) as the first X-ray SNR candidate in the outskirts of the LMC.
THE THREE HUNDRED project: Estimating the dependence of gas filaments on the mass of galaxy clusters
Authors: Santoni Sara , De Petris Marco , Yepes Gustavo , Ferragamo Antonio , Bianconi Matteo , Gray Meghan E. , Kuchner Ulrike , Pearce Frazer R. , Cui Weiguang , Ettori Stefano 
Published: November 2024

Context. Galaxy clusters are located in the densest areas of the universe and are intricately connected to larger structures through the filamentary network of the cosmic web. In this scenario, matter flows from areas of lower density to higher density. As a result, the properties of galaxy clusters are deeply influenced by the filaments that are attached to them, which are quantified by a parameter known as connectivity.
Aims. We explore the dependence of gas-traced filaments connected to galaxy clusters on the mass and dynamical state of the cluster. Moreover, we evaluate the effectiveness of the cosmic web extraction procedure from the gas density maps of simulated cluster regions.
Methods. Using the DisPerSE cosmic web finder, we identify filamentary structures from the 3D gas particle distribution in 324 simulated regions of 30 h−1 Mpc side from THE THREE HUNDRED hydrodynamical simulation at redshifts z = 0, 1, and 2. We estimate the connectivity at various apertures for ∼3000 groups and clusters spanning a mass range from 1013 h−1 M⊙ to 1015 h−1 M⊙. Relationships between connectivity and cluster properties like radius, mass, dynamical state, and hydrostatic mass bias are explored.
Results. We show that the connectivity is strongly correlated with the mass of galaxy clusters, with more massive clusters being on average more connected. This finding aligns with previous studies in the literature, both from observational and simulated datasets. Additionally, we observe a dependence of the connectivity on the aperture at which it is estimated. We find that connectivity decreases with cosmic time, while no dependencies on the dynamical state and hydrostatic mass bias of the cluster are found. Lastly, we observe a significant agreement between the connectivity measured from gas-traced and mock-galaxy-traced filaments in the simulation.
The counter-rotating stellar core of NGC 4494
Authors: Coccato L. , Morelli L. , Pizzella A. , Corsini E. M. , Cuomo V. 
Published: November 2024

Context. Kinematically decoupled cores (KDCs) are often found in the centers of early-type galaxies.
Aims. We aim to investigate the kinematics, structure, and stellar populations of the KDC residing in the early-type galaxy NGC 4494 to understand its formation.
Methods. We used long-slit spectroscopic data obtained with the FORS2 instrument on the VLT to measure the stellar kinematics and stellar populations. We performed a spectroscopic decomposition to disentangle the properties of the KDC from those of the host galaxy and construct models of the observed rotation curve.
Results. The rotation curve is characterized by two symmetric dips at |R| = 6″, where the rotation velocity drops to zero. Contrary to previous studies that explained the decoupled structure as a rapidly co-rotating disk, our analysis clearly shows that it is a counter-rotating component. A counter-rotating core is indeed needed to reproduce the observed dip in the velocity curve. The properties of the stellar populations of the decoupled core and the main galaxy are very similar: old stars (12−13 Gyr) with slightly super-solar metallicities (0 < [Z/H]< 0.15 dex) and α-enhanced (0 < [α/Fe]< 0.15 dex).
Conclusions. Our results indicate that the counter-rotating component is a disk of about 1 kpc in diameter that is obscured by dust in the central 0.12 kpc. The properties of its stellar populations suggest that it formed from the same material as the main stellar body of the host galaxy. This could have happened via internal processes such as the precession of a pre-existing rotating core, or, alternatively, via gas accretion in retrograde orbits followed by star formation. In the latter scenario, the accretion event occurred almost simultaneously with the formation of the galaxy, using material that had the same composition as the gas from which the stars in the main body of the galaxy were formed.
Pulse current injection platform with consecutive early-time and intermediate-time high-altitude electromagnetic pulse conducted currents for immunity test of electrical equipment
Authors: Zhang Dao-zhong , Xie Yan-zhao , Zhou Yi , Wu Yu-ying , Zhang Yun-peng 
Published: November 2024

High-altitude electromagnetic pulse (HEMP) has attracted considerable attention for its influence on electrical equipment. HEMP is divided into three parts: early time HEMP (E1), intermediate-time HEMP (E2), and late-time HEMP (E3). Most studies focused on E1 alone, while few investigated others. However, the electrical equipment may be disturbed by more than one part since these three parts co-exist in a HEMP environment. The pulse current injection (PCI) test is an effective immunity test method for evaluating the sensitivity and susceptibility of electrical equipment. To investigate the responses of electrical equipment excited by the consecutive E1 and E2 and compare with those under the individual E1 or E2, this paper builds a PCI platform that can carry out PCI tests with the consecutive E1 and E2 conducted current. To output the E1 current and the E2 current consecutively, which exhibit significant differences in the rise time (20 ns and 1.5 μs), peak current (2500 and 250 A), and full width at half maximum (FWHM, 500–550 ns and 3–5 ms), an E1&E2 coupler with a fast-closing high-current trigger switch is designed in this paper. Finally, some 10-kV epoxy insulators are tested in the developed platform, which shows the capacity of the proposed platform to test the immunity of electrical equipment with the consecutive E1 and E2 conducted current.
Large photoresistance and photoinduced magnetoresistance in La0.67Ca0.33MnO3 thin film on silicon substrate
Authors: Mohan Brij , Manral Pooja , Rani Reenu , Malik V K 
Published: November 2024

Abstract
The effects of light illumination and magnetic field on the electrical transport properties of La0.67Ca0.33MnO3 thin film on a silicon substrate have been studied in detail. Large value of colossal magnetoresistance has been observed under an applied magnetic field in the whole temperature range below 150 K which is related to the presence of both antiferromagnetic and ferromagnetic phase in the sample. A significant amount of resistance drop is caused by light illumination even at extremely low light intensities, ∼−22% with light of 0.3 μW cm−2 intensity and ∼−42% with 6.2 μW cm−2 intensity at 600 nm wavelength. There has been a notable rise in the photoinduced magnetoresistance value, specifically, a significant decrease in resistance occurs in simultaneous presence of magnetic field and light. For 1 T applied magnetic field, MR% rises from −33% in dark to −58% under light illumination at 150 K i.e. ΔMR% is 25%. As the strength of the magnetic field increases, ΔMR% decreases, suggesting that the magnetoresistive photoinduced phenomenon is more pronounced in the presence of mix phases in the sample. This combined enhanced magnetoresistive photoinduced phenomenon is explained by the interaction of photogenerated charge carriers in the sample and applied magnetic field.
Oscillation search robust dynamic mode decomposition method and its application in rolling bearing fault diagnosis
Authors: Huang Ji , Wang Jinhai , Yang Jianwei , Sun Runtao 
Published: November 2024

Abstract
Mechanical equipment has complex structures and operating environments, where bearing fault signals are frequently affected by harmonic interference from internal components and strong external noise. Therefore, it is a struggle to extract periodic impulse transients of fault signals from strong noise and interference. To address this challenge, this paper proposes an oscillation search robust dynamic mode decomposition (OSRDMD) method. Firstly, to enhance the reconstruction accuracy of the dynamic matrix A, a novel scheme is proposed to select valuable left singular subspaces to reduce large energy interference and noise. Then, to further reduce the interference from non-periodic components, the dominant periodic oscillatory modes of DMD are selected to reconstruct the fault signals. Simulation results demonstrate that OSRDMD consistently and reliably extracts fault frequencies even in low signal-to-noise ratio (SNR) environments ranging from −10 dB to −15 dB. Furthermore, in real dataset analysis, the proposed method exhibits superior fault diagnosis accuracy compared to existing decomposition techniques.
Fault diagnosis method for imbalanced samples of blade fracture in large petrochemical fan
Authors: Su Naiquan , Chen Yidian , Liu Yang , Wang Mengyu , Zhang Qinghua , Chang XiaoXiao 
Published: November 2024

Abstract
The mechanism analysis of the sudden change in load inertia caused by the failure of large petrochemical fan blades is unclear, which makes it difficult to diagnose imbalanced samples faults based on data-driven methods and has the problem of poor interpretability. Based on this issue, a fault diagnosis method for imbalanced samples of broken blades in large petrochemical fan under sudden changes in load inertia is proposed. This method firstly establishes a failure mechanism model for large petrochemical fan blades, revealing the physical characteristics between inertia, torque and speed under sudden changes in load inertia. Secondly, based on the failure mechanism model, the fault characteristics of broken blades in petrochemical fan are extracted to solve the problem of difficult feature extraction of fault samples in imbalanced samples. Finally, a data-driven diagnostic model was constructed under the constraint of sudden changes in load inertia to improve the interpretability of fault diagnosis for large petrochemical fan with broken blades. The experiment shows that the proposed method significantly improves the diagnostic accuracy and effectiveness for detecting faults in broken blades of petrochemical fans, achieving a fault diagnosis accuracy of 99.03%.
Intrinsic expansions in large Grashof numbers for the steady states of the Navier–Stokes equations
Authors: Hoang Luan , Jolly Michael S 
Published: November 2024

Abstract
We enable a theory of intrinsic asymptotic expansions for the steady state solutions of the full Navier–Stokes equations (NSE). Such a theory was first developed in Foias et al (2024 Commun. Pure Appl. Anal.
23 269–303) for Galerkin approximations. To overcome the lack of local compactness in infinite dimensional spaces, we introduce the notion of asymptotic expansions in nested spaces. When the inclusion maps between these spaces are compact, we establish the existence of such an asymptotic expansion for a subsequence of any bounded sequence. This consequently yields an intrinsic asymptotic expansion in a single normed space. We apply this result to the steady states of the NSE by utilizing the spectral fractional Sobolev spaces. In the case of the two-dimensional periodic boundary conditions, more properties relating the terms of the asymptotic expansion are obtained.