bluuebunny/crossref_metadata_2025_split huggingface dataset:
Coherent integration method for high‐speed target detection using angular inverse rotation transform
Authors: Wang Le , Tao Haihong , Yang Aodi , Yang Fusen 
Published: November 2024

AbstractHigh‐speed target often induces severe across range unit problem in the long‐time coherent integration (LTCI). This paper designates the bottom‐right corner of the 2‐D compressed signal as the coordinate system origin. It establishes a novel angular inverse rotation transform that accurately corrects target's trajectory to the final location and achieves signal energy accumulation. Numerical simulation experiments and real‐world measured data confirm the effectiveness of the proposed method.
Design and verification of monitoring system of DC microgrid based on Ethernet communication
Authors: Zhang Lirong , Bao Xianwen 
Published: November 2024

AbstractReal‐time acquisition of microgrid (MG) operation data and remote control play a crucial role in the safe and stable operation of MG. A design scheme of monitoring system is proposed for the wind/photovoltaic/energy storage islanded direct current MG. The core controllers used in direct current MG system are programmable logic controller and digital signal processor. The monitoring system mainly adopts Ethernet communication, together with serial port communication mode Recommend Standard 232 (RS232) and Recommended Standard 485 (RS485) communication modes. A heterogeneous networking is built with controllers and data display instruments. Different monitoring interfaces are designed, the important information can be real‐time detected, collected and displayed. The multi‐energy and multi‐load dispatching operation control are realized according to scheduling operation plan. The parameters of the inverter can be adjusted, and the output voltage waveform and sinusoidal pulse width modulation waveform of the inverter can be measured. The communication of the proposed monitoring system is reliable, flexible and expandable, and easy to realize remote operation control. Moreover, the detection and control functions can be extended further. Through experiments, the effective control and monitoring of the designed monitoring system is verified, and the intelligent management is realized.
First discovery and confirmation of planetary nebula candidates from AI and deep learning techniques applied to VPHAS+ survey data
Authors: Li Yushan , Parker Quentin , Jia Peng 
Published: November 2024

Context. We have developed tools based on deep learning and artificial intelligence (AI) to search extant narrow-band wide-field Hα surveys of the Galactic Plane for elusive planetary nebulae (PNe) hidden in dense star fields towards the Galactic centre. They are faint, low-surface-brightness, usually resolved sources, which had not discovered by previous automatic searches that depend on photometric data for point-like sources. These sources are very challenging to locate by traditional visual inspection in such crowded fields and many have been missed. We have successfully adopted a novel ‘Swin-Transformer’ AI algorithm, which we describe in detail in the preceding Techniques paper (Paper I).
Aims. Here, we present preliminary results from our first spectroscopic follow-up run for 31 top-quality PN candidates found by the algorithm from the high-resolution Hα survey VPHAS+. This survey has not yet undergone extensive manual, systematic searching.
Methods. Our candidate PNe were observed with the SpUpNIC spectrograph on the 1.9 m telescope at the South African Astronomical Observatory (SAAO) in June 2023. We performed standard IRAF spectroscopic reduction, followed by our normal HASH PN identification and classification procedures.
Results. Our reduced spectra confirmed that these candidates include 22 true, likely, and possible PNe (70.97%), 3 emission-line galaxies, 2 emission-line stars, 2 late-type star contaminants, and 2 other Hα sources including a newly identified detached fragment of supernova remnants (SNRs) RCW 84. We present the imaging and spectral data of these candidates and a preliminary analysis of their properties. These data provide strong input for evaluating and refining the behaviour of the AI algorithm when searching for PNe in wide-field Hα surveys.
Das therapeutische Potenzial von extrazellulären Vesikeln von
mesenchymalen Stromazellen
Authors: Kutzner Tanja J. , Bauer Fabiola Nardi , Giebel Bernd 
Published: November 2024

ZusammenfassungKleine (small) extrazelluläre Vesikel (sEVs) sind biologische Nanopartikel
mit Größen von unter 200 nm, die von praktisch allen Zellen freigesetzt und in
allen Körperflüssigkeiten nachgewiesen werden können. Ihre Zusammensetzung ist
zellspezifisch, und ein Teil der sEVs kann komplexe Informationen von der
sendenden zu spezifisch ausgewählten Zielzellen übertragen. Abhängig von ihrem
Ursprung können sEVs physiologische und pathophysiologische Prozesse steuern.
sEVs, die von mesenchymalen Stamm-/Stromazellen (MSCs) freigesetzt werden,
vermitteln beispielsweise therapeutische Aktivitäten bei einer Vielzahl
verschiedener Krankheiten, deren Symptomatik von Entzündungsprozessen geprägt
ist. Obwohl ihre konkreten Wirkmechanismen (mode of action; MoA) sowie
ihre Wirkorte (side of action; SoA) noch nicht ausreichend untersucht
wurden, scheint es, dass MSC-sEVs multimodal wirken. Es gibt Hinweise darauf,
dass MSC-sEV-Präparate als Teil ihrer therapeutischen Aktivitäten
pro-inflammatorische in regulatorische/tolerogene Immunantworten umwandeln,
angiogene und pro-regenerative Prozesse fördern sowie anti-apoptotisch und
energieerhaltend wirken. Hier beschreiben wir die Historie, die zur Entdeckung
der therapeutischen Aktivitäten von MSC-sEVs geführt hat, einige ihrer
therapeutischen Anwendungsfelder und Herausforderungen bei ihrer effektiven
Translation in die Klinik.
The reconstruction of surface vibrations from near-field acoustic pressure measurements under steady flow
Authors: Valdivia Nicolas P 
Published: November 2024

Abstract
We consider the problem of reconstructing the surface flow vibration in a medium with steady flow from pressure measurements on a nearby surface. Mathematically, the pressure measurements satisfy the harmonic steady-flow wave equation. This work demonstrates that we can represent any solution to the steady-flow equation by a single-layer integral. Using the layer operator reduces the inverse problem to a linear integral equation of the first kind. Moreover, we reduce the problem to the numerical solution of a matrix system by discretizing this integral equation. We will also show that our inverse problem has logarithmic stability, meaning that the matrix system requires numerical regularization methods (like truncated singular value decomposition) for its solution. In addition, we report numerical studies that validate the accuracy of the proposed numerical reconstruction methodology. Finally, we test the proposed reconstruction methodology with quadrupole examples to test the resolution of our reconstruction.
Noncoplanar magnetic structures in Mn4N epitaxial films evaluated by alternating magnetic force microscopy
Authors: Isogami Shinji , Imamura Kosuke , Kuwayama Ryota , Abe Kouta , Ohtake Mitsuru , Makarova Marina , Saito Hitoshi 
Published: November 2024

Abstract
Noncoplanar magnetic structures in the Mn4N epitaxial thin films grown on the 001-oriented MgO and SrTiO3 (STO) substrates were studied, based on the measurements of topological Hall effect (THE) and the observation of magnetic domain nucleation. The typical nucleation diameter of domain was determined using an alternating magnetic force microscope, which proved advantageous for the visualization of the domain with an out-of-plane magnetic component. The nucleation diameter of the domains on the MgO substrate were ∼150 nm for the thickness of 30 nm and ∼110 nm for 10 nm, while ∼130 nm for 30 nm on the STO substrate. The value of THE was one or two orders of magnitude larger than that estimated based on the nucleation diameter, indicating that the existence of a noncoplanar magnetic structure is the primary factor contributing to the THE in the Mn4N films, comparing to the effect from domain nucleation. The noncoplanar magnetic structure was more pronounced with decreasing thickness and substrate-induced strain.
Coverage- and temperature-induced self-metalation of tetraphenyltransdibenzoporphyrin on Cu(111)
Authors: Shaker Majid , Muth Maximilian , Steffen Julien , Ceccatto Dos Santos Alisson , Jaekel Simon , Adhikari Rajan , Gazetas Pascal , Oleszak Christoph , de Siervo Abner , Jux Norbert , Görling Andreas , Lytken Ole , Steinrück Hans-Peter 
Published: November 2024

Abstract
We have investigated the adsorption and self-metalation of free-base tetraphenyltransdibenzoporphyrin (2H-TPtdBP) on Cu(111) as a function of coverage and temperature using scanning tunneling microscopy, x-ray photoelectron spectroscopy, temperature programmed desorption, and density-functional theory calculations. At low coverages (<0.16 molecules nm−2), we observe isolated individual molecules with an inverted conformation and no self-metalation up to 363 K. At higher coverages, both the formation of ordered islands and self-metalation are observed over time already at room temperature, and accelerate upon heating to 363 K. At 423 K, complete self-metalation occurs for all coverages up to the completed first layer. By comparing our results for 2H-TPtdBP to the existing literature on other tetraphenyl-based porphyrins, we demonstrate how adsorption and self-metalation can be tailored by the choice of substituents.
Thermodynamics and entropic inference of nanoscale magnetic structures in Gd
Authors: Binek Christian , Abbas Shah Syed Qamar , Balasubramanian Balamurugan 
Published: November 2024

Abstract
A bulk gadolinium (Gd) single crystal exhibits virtually zero remnant magnetization, a common trait among soft uniaxial ferromagnets. This characteristic is reflected in our magnetometry data showing virtually hysteresis free isothermal magnetization loops with large saturation magnetization. The absence of hysteresis allows to model the measured easy axis magnetization as a function of temperature and applied magnetic field, rather than a relation, which permits the application of Maxwell relations from equilibrium thermodynamics. Demagnetization effects broaden the isothermal first-order transition from negative to positive magnetization. By analyzing magnetization data within the coexistence regime, we deduce the isothermal entropy change and the field-induced heat capacity change. Comparing the numerically inferred heat capacity with relaxation calorimetric data confirms the applicability of the Maxwell relation. Analysis of the entropy in the mixed phase region suggests the presence of hitherto unresolved nanoscale magnetic structures in the demagnetized state of Gd. To support this prediction, Monte Carlo simulations of a 3D Ising model with dipolar interactions are performed. Analyzing the cluster size statistics and magnetization from the model provides strong qualitative support of our analytic approach.
Electron inertial effects in the rarefied regime of a direct-current (DC) breakdown
Authors: Mansour A R , Vialetto L , Yamashita Y , Hara K 
Published: November 2024

Abstract
A multi-fluid moment model, a drift-diffusion (DD) model, and a particle-in-cell/Monte Carlo collision (PIC-MCC) model are compared to investigate direct-current breakdown accounting only for singly charged ions and electrons. The key difference between the moment and DD models is that the electron inertial terms are taken into account in the moment model while the DD models neglect the inertia terms. The breakdown voltage results obtained from the multi-fluid moment and PIC-MCC models are in good agreement with each other over a wide range of pd values, where p is the gas pressure and d is the distance between the cathode and anode. The steady-state electron momentum balance reveals the importance of the electron inertial term at low values of pd, showing the invalidity of the DD approximation under such conditions. The results also show that the main electron energy loss mechanism transitions from volumetric (collisional) losses at high pd regime, which corresponds to low reduced electric field, to convective heat to the anode at low pd regime, where the reduced electric field is high.
ZnMnCoS/rGO nanocomposite for an effective bifunctional electrode for overall water splitting and supercapacitor applications
Authors: Manikandan M , Karthigeyan K A , Papanasam E , Manikandan E 
Published: November 2024

Abstract
Future energy storage and energy conversion devices will benefit from the development of active electrode materials that serve as both an electrocatalysts and an energy storage device. Recently, mixed metal sulfides are cheaper and have improved electrical and electrochemical performance than their oxide/hydroxide similarly has garnered a lot of interest for use in energy storage and electro catalysis applications. In this, mixed metal sulfides, as zinc manganese cobalt sulfide (ZMCS) and reduced graphene oxide composite zinc manganese cobalt sulfide (rZMCS) were successfully synthesized via hydrothermal route for overall water splitting and supercapacitor. The prepared materials are characterized through x-ray diffraction, x-ray photoelectron spectroscopy, Field emission scanning electron microscope, transmission electron microscope with elemental mapping and Brunauer–Emmett–Teller analysis. The ZMCS and rZMCS electrodes exhibit an over-potential of 258 and 170 mV for HER and 302 and 230 mV for OER at a density of current is 10 mA cm2 in 3 M KOH. Overall water splitting is carried out for rZMCS electrodes and it shows the long-term stability of 15 hrs. The specific capacitances of ZMCS and rZMCS electrodes are 1065 F g1 and 1167 F g1 at 1 A g1. The obtained electrode could maintain 96 % and 98 % until 5000 cycles. Asymmetric supercapacitor device rZMCS//rGO delivers a total amount of energy and power is 47.6 Wh kg1 and 925 W kg1 with could maintain 86 % upto 10000 cycles. The outcomes draw attention to the produced electrode able to be practical as a multifunctional electrode for energy storage and conversion devices.
The Effect of minimal length to the performance of quantum heat engine with Morse oscillator
Authors: Sukamto Heru , Yuwana Lila , Anang Subagyo Bintoro , Purwanto Agus , Taufiqi Muhammad , Latifah Eny 
Published: November 2024

Abstract
The impact of minimal length on the performance of a quantum heat engine based on a harmonic oscillator with a Morse potential is examined, using a diatomic molecule as the working substance. The calculation method employs a frequency analog to the inverse potential width, enabling the determination of heat and work for the harmonic oscillator system similarly to a particle confined in a one-dimensional box. A Carnot-like cycle, comprising two isoenergetic and two adiabatic processes, is utilized. Efficiency and power output are evaluated, taking into account heat leakage. The findings reveal that minimal length enhances efficiency and power output at high oscillation frequencies, with the increasing frequency expanding the engine’s optimal operational range.
Reconfigurable logic-in-memory circuits with ferroelectric nanosheet field-effect transistors
Authors: Cheng Tian-Tong , Li Jia-Cheng , Yang Yu-Xi , Li Qiang , Hsu Hsiao-Hsuan , Zheng Zhi-Wei 
Published: November 2024

Abstract
To accommodate the requirements of small device dimensions and the application of ferroelectric field-effect transistors (FeFETs) in logic-in-memory circuits, we realize the reconfigurable logic-in-memory circuits with ferroelectric nanosheet field-effect transistors (FeNSFETs) through simulation. By evaluating the memory window and logic performances of the devices, it is demonstrated that the key to constructing logical functions are the magnitudes of the drain current at program (PGM) and erase (ERS) state when V
G = 0 V. We find that appropriately increasing the number of nanosheets can enhance the current at PGM state, and appropriately increasing the write voltage can decrease the current at ERS state, which are both beneficial for the achievement of reconfigurable circuits. Thus, it is necessary to take into consideration the trade-offs between the process complexity, power consumption, and logical function realization. This work contributes to the prospective design for ferroelectric reconfigurable logic-in-memory circuits.
Size-dependent thermoelastic damping model for vibrating circular cross-sectional micro/nanobeams according to Moore-Gibson-Thompson thermoelasticity theory
Authors: Widatalla Sabir 
Published: November 2024

Abstract
Motivated by the limitations of classical models in capturing the behavior of materials at the micro/nanoscales, this work proposes an analytical formulation for thermoelastic damping (TED) in circular cross-sectional micro/nanobeams with size-dependent mechanics and heat transfer. This model incorporates small-scale effect through the modified couple stress theory (MCST) for mechanics and the Moore-Gibson-Thompson (MGT) model for heat conduction. To accomplish this objective, the initial step involves introducing the general equations of the MCST and MGT model. Following the establishment of the MGT model, the temperature variations throughout the beam are obtained by solving the heat equation. Additionally, by implementing the principles of the MCST, the model incorporates size-dependent constitutive relations. Finally, the research employs the energy dissipation (ED) approach to render a mathematical expression for TED in tiny beams with circular cross section. This relation, expressed as an infinite series, accounts for size-dependent effects by incorporating the MCST and MGT model. In the section dedicated to numerical results, the initial step involves verifying the accuracy of the proposed model through a validation study. Next, the section showcases various numerical results, focusing on how the MCST and MGT model affect the temperature distribution and TED value. The acquired results underscore that the influence of the MCST and MGT model on the amount of TED in small-sized circular cross-sectional beams cannot be disregarded.
Potential NO2 gas-sensing performance of (Cr, Mo, W)-doped VO-Ti3C2O2-MXenes: a first-principles study
Authors: Yu GuangJun , Liu Xin , Su JiaHui , Zhao Bing , Liu Chi , Feng Yue , Shen Tao 
Published: November 2024

Abstract
Typical Ti3C2O2 MXenes materials have been widely studied in the field of gas sensors due to their excellent properties in optoelectronics. The adsorption properties of four gases (NO2, NO, NH3, H2O) on the intrinsic Ti3C2O2, Ti3C2O2 with oxygen vacancy (VO-Ti3C2O2) and (Cr, Mo, W) doped VO-Ti3C2O2 were studied by density functional theory (DFT). The geometric structure, molecular dynamics, adsorption energy, differential charge density, and band structure of four gas molecules (NO2, NO, NH3, H2O) adsorbed in the intrinsic Ti3C2O2, VO-Ti3C2O2, and (Cr, Mo, W) doped VO-Ti3C2O2 were analyzed systematically. The results show that the adsorption energy and charge transfer properties of the VO-Ti3C2O2 doped with Cr, Mo, W are stronger than those of the intrinsic Ti3C2O2. Among them, the maximum adsorption energy of W-doped Ti3C2O2 for NO2 adsorption is −7.67 eV. Therefore, the inclusion of metal atoms in Ti3C2O2 material can improve the adsorption and selectivity of NO2 and other gases. In addition, W-doped Ti3C2O2 MXenes is a promising material for NO2 gas detection.
A role of fear on diseased food web model with multiple functional response
Authors: Megala Thangavel , Pradeep Manickasundaram Siva , Yavuz Mehmet , Gopal Thangaraj Nandha , Sivabalan Muthuradhinam 
Published: November 2024

Abstract
In this paper, we analyze the role of fear in a three-species non-delayed ecological model that examines the interactions among susceptible prey, infectious (diseased) prey, and predators within a food web. The prey population grows in a logistic manner until it achieves a carrying capacity, reflecting common population dynamics in the absence of predators. Diseased prey is assumed to transmit infection to healthful prey by the use of a Holling type II reaction. Predators, alternatively, are modeled to consume their prey using Beddington–DeAngelis and Crowley–Martin response features. This evaluation specializes in ensuring the non-negativity of solutions, practical constraints on population dynamics, and long-term stability of the system. Each biologically possible equilibrium point is tested to understand the environmental stable states. Local stability is assessed through eigenvalue analysis, while global stability of positive equilibria is evaluated by the use of Lyapunov features to determine the overall stability of the model. Furthermore, Hopf bifurcation is explored primarily based on infection rate ɛ. Numerical simulations are carried out to validate the theoretical effects and offer practical insights into the model behaviour under specific conditions.
Quantum Fisher information of a ♢-type four-level atom interacting with a single-mode quantized field in an optomechanical cavity
Authors: Daneshmand Fatemeh , Baghshahi Hamid Reza , Yahya Mirafzali Sayyed 
Published: November 2024

Abstract
In science and technology, precision measurement of physical quantities is crucial, and the quantum Fisher information (QFI) plays a significant role in the study of quantum systems. In this work, we explore the dynamics of QFI in a hybrid optomechanical system, which consists of a ♢-type four-level atom interacting with a single-mode quantized field via a multi-photon process. We account for various sources of dissipation, including the decay rates of the atom, the cavity and the mechanical modes. Using an effective Hamiltonian, we analytically derive the explicit form of the state vector of the entire system via the time-dependent Schrödinger equation. We then investigate the atomic QFI for the estimation precision of the decay rate of the mechanical oscillator. Furthermore, we examine how optomechanical and atom-field coupling strengths, dissipation parameters and multi-photon transition influence the dynamics of atomic QFI. Our numerical results suggest that the estimation precision of the decay rate of the mechanical oscillator can be controlled by these parameters.
The electromagnetic form factors and spin polarization of
in the process
*
Authors: Chen 陈 Cheng 诚 , Yan 闫 Bing 冰 , Xie 谢 Ju-Jun 聚军 
Published: November 2024

Abstract
The total cross sections of the process

close to the threshold are calculated within the vector meson dominance model. It is found that the theoretical results can describe the current experimental measurements. The nontrivial near-threshold energy dependence of the total cross sections of the process

can be well reproduced by considering the contributions from charmonium-like states and the Coulomb factor. In particular, the results for the angular distribution parameters about the differential cross section are consistent with the experiments from the BESIII Collaboration. In addition, the relative phase

of the electromagnetic form factors is given, and the spin polarization of

is predicted at center-mass energy

. It is hopeful that this work will provide a new perspective on the characteristics of the charmed baryon

.