bluuebunny/crossref_metadata_2025_split huggingface dataset:
Musk deer are inherited
Authors: Lai Yunfan 
Published: December 2024

Abstract
This paper explores a rare sound correspondence pattern found in Gyalrongic languages, focusing on two etyma:
‘musk deer’ and ‘valley’. The reflexes in daughter languages exhibit different onsets, including palatals, alveolars, and
laterals, which renders their genetic relationship non-obvious. Despite its significance, this correspondence pattern has been
largely overlooked and insufficiently reconstructed. In this study, I propose a novel reconstruction of the onset, namely *t.ɬj-,
elucidating the distinct reflexes observed in different sub-branches. Through this analysis, I demonstrate that both etyma have
Sino-Tibetan origins. Additionally, the paper emphasises the importance of studying correspondences with limited examples and
discusses the broader implications of such research for other domains.
Narrative discourse segmentation in clinical linguistics
Authors: Bergelson Mira B. , Khudyakova Mariya V. 
Published: December 2024

Abstract
This chapter deals with segmentation, definition of basic units
and annotation of the first corpus of Russian narratives by individuals with brain damage –
people with aphasia and right hemisphere damage – and neurologically healthy speakers. We
show that parameters such as pause length and intonation contours cannot be used for
segmentation of impaired speech. Instead, they use syntactic criteria for the identification
of the basic, or – as they are called in this paper – elementary discourse
units (EDUs). The Russian CliPS (Clinical Pear Stories) corpus contains
multi-layer annotation of audio- and video-recordings, performed on micro- and
macro-linguistic level, and can be used as a source for qualitative and quantitative
research on various aspects of speech in aphasia and right hemisphere damage.
Experimental design for testing local Lorentz invariance violation in gravity
Authors: Li Jia-Rui , Tan Yu-Jie , Jin Tao , Huang Wei-Sheng , Huang Hao , Qin Cheng-Gang , Shao Cheng-Gang 
Published: December 2024

Abstract
Local Lorentz invariance is an important foundation of General Relativity, and its high-precision testing can help to explore the unified theories. In this work, we focus on the local Lorentz violating effect in pure gravity with mass dimension d = 6, and study the experimental design for testing local Lorentz violation with precision torsion pendulum experiments. By designing the striped test and source masses, and setting the appropriate azimuth angles of the experimental setup, we found the constraint accuracy of the local Lorentz violation coefficients is expected to be improved by one to two orders of magnitude compared with the international optimal level. Moreover, considering the difficulty level of changing the azimuth angle of the experimental setup in practical experiments, we proposed two experimental strategies and separately studied the azimuth-angle configurations corresponding to the optimal constraint of the local Lorentz violating coefficients, which can guide the development of the later experiments.
Study on the improvement of the insulation performance of polypropylene film by regulating TiO2–F by liquid phase grafting
Authors: Li Min , Liu Qi , Tian Haonan , Ma Jianqiao , Xie Jun 
Published: December 2024

Abstract
According to the problem that the performance of film capacitors is limited due to the poor insulation of polypropylene (PP) film, a new nano-filler was studied and a PP composite dielectric was fabricated. The breakdown strength of composite dielectrics was measured and the mechanism for improving their insulation properties was analyzed. In this paper, TiO2 with high dielectric constant is plasma-treated and then coated with a layer of PP shell. TiO2 increases the dielectric constant of PP film composite dielectrics, and shell-like PP makes TiO2 more tightly bound to the PP matrix. Compared with pure PP, the breakdown voltage of TiO2–F is increased by 18.7%, and the breakdown voltage of TiO2–F@PP-mah is increased by 40.5%, and the new nano filler greatly improves the insulation performance of PP. The experimental results show that TiO2 introduces a low-density trap, TiO2–F introduces a high-density deep trap, and the modification of PP-mah slows down the dielectric constant conflict, increases the compatibility between the nanoparticles and the matrix, and increases the trap energy level. Based on the analysis of experimental results with different mass fractions, this paper proposes the optimal filling ratio of the new core-shell, which provides a new method for the composite dielectric to improve the insulation performance.
Polarizability, plasmons and damping in pseudospin-1 gapped materials with a flat band
Authors: Zhemchuzhna Liubov , Iurov Andrii , Gumbs Godfrey , Huang Danhong 
Published: December 2024

Abstract
The subject of our present investigation is the collective electronic properties of various types of pseudospin-1 Dirac-cone materials with a flat band and finite bandgaps in their low-energy spectra. Specifically, we have calculated the dynamical polarization, plasmon dispersions, as well as their decay rates due to Landau damping and presented the closed-form analytical expressions for the wave function overlaps for both the gapped dice lattice and the Lieb lattice. The gapped dice lattice is a special case of the more general α-

T

3

model such that its band structure is symmetric and the flat band remains dispersionless. On the other hand, the Lieb lattice has a flat band which appears at the lowest point of its conduction band. Our results for these two materials exhibit unique features in the plasmon spectra and their damping regions, which have never been previously reported. For example, the particle-hole modes of a Lieb lattice appear as finite-size regions, while the plasmon modes exist only in areas with small wave numbers but an extended range of frequencies.
A high-precision DOA estimator for low-frequency signals using ultra-dense small-aperture microphone arrays
Authors: Zhang Kunkun , Tong Haonan , Tao Jun , Li Baoqing , Zhou Qianwei 
Published: December 2024

Abstract
Accurate direction of arrival (DOA) estimation is critical for the effectiveness of unattended ground sensor (UGS) systems, as it enhances sound localization, situational awareness, resource optimization, and facilitates integration with other sensor data for comprehensive monitoring. With the growing demand for lightweight and miniaturized sensors suitable for diverse environments, challenges arise in DOA estimation of low-frequency signals using dense small-aperture microphone arrays, especially under noisy conditions. Despite advancements in deep learning, both conventional and existing neural network methods struggle with this task. In this paper, we present the multi-resblock DOA network (MRDNet), a novel neural network designed for precise DOA estimation of low-frequency sounds in noisy environments using small-aperture arrays. MRDNet was evaluated under simulations involving Brownian and Gaussian noise, representing wind and general background disturbances. The results demonstrate that MRDNet achieves superior accuracy, with a mean angular error of 2.797 degrees, significantly outperforming baseline methods by 24.93%. Furthermore, we show that increasing the number of microphones within a constant array size using MRDNet effectively enhances DOA accuracy in the context of deep learning. The source code is available at https://github.com/KunKun-Zhang/MRDNet.
Optimization of auxetic tubular structures with dragonfly-wing-shape cells through advanced multiobjective optimization techniques
Authors: Augusto Gomes Rafael , de Oliveira Lucas Antonio , Francisco Matheus Brendon , Gomes Guilherme Ferreira 
Published: December 2024

Abstract
Interest in auxetic structures has surged due to their unique mechanical behavior, including a negative Poisson’s ratio and exceptional energy absorption (EA) capabilities. This study aims to enhance the mechanical properties of tubular structures using a dragonfly-shaped auxetic unit cell. An optimization framework is implemented to simultaneously minimize three critical structural objectives: Poisson’s ratio, mass, and stress. Numerical simulations facilitate metamodeling via the response surface method, creating surrogate models that accurately represent each response variable. A metaheuristic optimization technique, the Non-dominated Sorting Genetic Algorithm, is then employed to optimize these responses for compression performance. Experimental validation supports the numerical findings, with two optimized designs proposed. The first design (TOPSIS 1) shows reductions in Poisson’s ratio by up to 3% and stress by 45%, while the second design (TOPSIS 2) demonstrates a stress reduction of 498%. Additionally, experimental validation reveals significant improvements in EA capabilities, with TOPSIS 1 and TOPSIS 2 increasing EA by 58% and 545%, respectively, compared to the baseline. The integration of Industry 4.0 concepts, such as additive manufacturing and numerical simulation, proves essential in achieving efficient and effective outcomes, highlighting the importance of advanced manufacturing techniques in enhancing structural design paradigms.
Effect of group-velocity dispersion on the generation of multimode pulsed squeezed light in a synchronously pumped optical parametric oscillator
Authors: Averchenko V A , Malyshev D M , Tikhonov K S 
Published: December 2024

Abstract
Parametric down-conversion in a nonlinear crystal is a widely employed technique for generating quadrature squeezed light with multiple modes, which finds applications in quantum metrology, quantum information and communication. Here we study the generation of temporally multimode femtosecond pulsed squeezed light in a synchronously pumped optical parametric oscillator (SPOPO) operating below the oscillation threshold, while considering the presence of non-compensated intracavity group-velocity dispersion. Based on the developed time-domain model of the system, we show that the dispersion results in mode-dependent detuning of the broadband supermodes of the pulsed parametric process from the cavity resonance due to temporal Gouy phase, as well as linear coupling between these supermodes. With perturbation theory up to the second order in the coupling coefficients between modes, we obtained a solution for the amplitudes of multiple supermodes given an arbitrary sub-threshold pump level. The dispersion affects the quantum state of the supermodes by influencing their squeezing level and the rotation of the squeezing ellipse. It also affects the entanglement among the supermodes, leading to reduced suppression of shot noise level as measured in the balanced homodyne detection scheme. Furthermore, our study highlights the potential of SPOPO with group-velocity dispersion as a testbench for experimental investigations of multimode effects in linearly evanescent coupled parametric oscillators.
High FOM fano resonance refractive-index sensor based on a baffled MIM waveguide coupled with an inverted L-Shaped resonator
Authors: Chen Tianshan , Gao Jiayao , Wang Xiangxian , Chen Yizhen , Yang Hua , Qi Yunping 
Published: December 2024

Abstract
A baffled metal-insulator-metal (MIM) waveguide coupled with an L-shaped resonator was developed and a double Fano resonance was excited in the structure. Using the optimal parameters, the sensing characteristics of the structure in a gas environment were studied. The maximum sensitivity was 682 nm/RIU and the maximum figure of merit (FOM) was 7587. Based on this structure, the influence of the resonators on the transmittance characteristics was studied for four different placement ways. A triple Fano resonance was obtained by simply inverting the L-shaped resonator. In this state, the maximum sensitivity and FOM reached 945 nm/RIU and 1.04 × 105, respectively. Compared with the L-shaped resonator structure, the sensitivity and FOM of the inverted L-shaped resonator structure were significantly improved. This study provides a new concept for designing a refractive-index sensor with miniaturization, integration, high sensitivity, high FOM, and multichannel sensing.
A comprehensive investigation of optoelectronic and thermoelectric attributes of VCu3X4 (X = S,Se,Te) compounds for renewable energy applications
Authors: Tauqeer Muhammad , Mubashir Muhammad , Ali Mubashar , Bibi Zunaira , Gul Imran , Bilal Muhammad , Mughal Jahanzaib , Khan Dilbar , Ullah Muhammad Mitee , Arshad Kinza , Bentalib Abdulaziz 
Published: December 2024

Abstract
Research on sustainable, environmentally friendly power sources aims to address potential energy issues caused by the decreasing availability of renewable resources. The V-series compounds are considered the most promising materials for the next generation because they are ecologically friendly. In the present work, we used First-Principle computation to investigate the structural, mechanical, optical, electronic, thermodynamic, and thermoelectric attributes of

VCu
₃
X
₄
(
X
=
S
,
Se
,
Te
)

compounds using Density Functional Theory (DFT). First, we applied the PBE-GGA method to calculate the lattice constants, which were found to be

5.437

Å

,

5.669

Å

, and

5.954

Å

for

VCu
₃
S
₄

,

VCu
₃
Se
₄

, and

VCu
₃
Te
₄

, respectively. We thoroughly examined the binding energy to assess the structural stability of

VCu
₃
X
₄

compounds, revealing the thermodynamical stability of the uunder-study compounds. Furthermore, mechanical stability was confirmed using elastic stiffness constants, satisfying the Born-Stability criteria

(

C

44

<
0
)

. Pugh’s and Poisson’s ratios, along with the Cauchy pressure, indicated ductile behavior in all compounds except

VCu
₃
S
₄

, which exhibited brittle characteristics. The compounds demonstrate significant optical conductivity and absorption coefficients, with

VCu
₃
Te
₄

being particularly responsive to intense photon streams due to its smaller band gap of

0.57
eV

, while

VCu
₃
S
₄

and

VCu
₃
Se
₄

have band gaps of 1.01 eV and 0.88 eV, respectively. We assessed the electronic properties by examining the band structure and the total and partial density of states

(
TDOS
/
PDOS
)

, which illustrated that the under studied compounds have indirect band gaps of 1.01 eV

(
VCu
₃
S
₄
)

, 0.88 eV

(
VCu
₃
Se
₄
)

, and 0.57 eV

(
VCu
₃
Te
₄
)

. Using BoltzTraP coding, we evaluated the Seebeck coefficient, electrical and thermal conductivity, and power factor, demonstrating that

VCu
₃
Te
₄

, with its small energy gap, is particularly promising for high-temperature thermoelectric and optoelectronic applications.
Lie symmetries for the shallow water magnetohydrodynamics equations in a rotating reference frame
Authors: Paliathanasis Andronikos , Halder Amlan 
Published: December 2024

Abstract
We perform a detailed Lie symmetry analysis for the hyperbolic system of partial differential equations that describe the one-dimensional Shallow Water magnetohydrodynamics equations within a rotating reference frame. We consider a relaxing condition

∇

h
B

≠
0

for the one-dimensional problem, which has been used to overcome unphysical behaviors. The hyperbolic system of partial differential equations depends on two parameters: the constant gravitational potential g and the Coriolis term f
0, related to the constant rotation of the reference frame. For four different cases, namely g = 0, f
0 = 0; g ≠ 0 , f
0 = 0; g = 0, f
0 ≠ 0; and g ≠ 0, f
0 ≠ 0 the admitted Lie symmetries for the hyperbolic system form different Lie algebras. Specifically the admitted Lie algebras are the

L

10

=

A

3
,
3

⋊

A

2
,
1

⨂

s

A

5
,
34

a

; L
8 = A
2,1 ⋊ A
6,22;

L

7

=

A

3
,
5

⋊

A

2
,
1

⋊

A

2
,
1

; and L
6 = A
3,5 ⋊ A
3,3respectively, where we use the Morozov-Mubarakzyanov-Patera classification scheme. For the general case where f
0
g ≠ 0, we derive all the invariants for the Adjoint action of the Lie algebra L
6 and its subalgebras, and we calculate all the elements of the one-dimensional optimal system. These elements are then considered to define similarity transformations and construct analytic solutions for the hyperbolic system.
Dissociative excitation of acetone induced by electron impact
Authors: Stachová B , Garcia Angulo E L , Matejčík Š , Michalczuk B , Országh J 
Published: December 2024

Abstract
We report the results of an experimental study focused on the low-energy (10–100 eV) electron impact excitation of acetone. In the emission spectrum, the most prominent excited species were found to be the hydrogen Balmer series, the excited CH radical in the A and B electronic states, and atomic carbon. The presence of OH emission in the spectra confirms the tautomerization process induced by electron impact. The acetone emission spectra were measured at several different reaction energies, forming a unique 3D spectral electron energy map. Excitation-emission functions were extracted for selected most prominent products and corresponding threshold energies were determined.
Research Status and Progress on Technologies for Exploration of Dry Hot Rock Resources in China
Authors: Chen Zhen , Wang Xingzi , Peng Binbin , Zhang Hai , Li Zixiang , Gong Haiting 
Published: December 2024

Abstract
Hot Dry Rock (HDR) represents a clean and renewable geothermal energy source, playing a crucial role in global energy transition and climate change mitigation. China possesses abundant HDR resources. However, compared to the international advanced level, domestic exploration technology is still in its early stages. This paper analyzes the distribution of HDR resources in China and the achievements in exploration projects. It delves into the principles, applications, limitations, and development trends of key technologies in the main processes of HDR resource exploration. The paper emphasizes the necessity of improving exploration precision, enhancing high-temperature drilling fluid development, advancing logging technology, and establishing unified evaluation standards. Furthermore, it highlights the potential of artificial intelligence and big data technologies in improving exploration efficiency and reducing development risks, aiming to provide scientific technical guidance and practical references for the exploration and utilization of HDR resources in China.
Analysis on Towing Damage and Protection suggestions of Submarine Pipelines Caused by Ship Anchoring Operation
Authors: Sun Qian , Liu Jianmin , Zhou Hong 
Published: December 2024

Abstract
In this article towing damage of the anchor to the submarine pipeline is mainly studied, the magnitude of the towing force by using ABAQUS software is calculated, and the strength of the submarine pipeline is checked on the basis of the drag force. It is found that the damage to the pipeline caused by the drag is destructive, and the pipeline may fail, which may cause danger. This paper summarizes the calculation method of towing anchor navigation distance, and puts forward the pipeline protection method of setting no anchor area. From the point of view that the energy of the anchor can be absorbed by the soil, it is proposed that the pipeline can be buried to a certain depth to prevent the towing damage of the anchor to the submarine pipeline. The reference data are presented through a specific example. The research results can provide a theoretical basis and reference for the future research on the damage of submarine pipelines caused by towing and the protection methods of pipelines.
Research on Fast Prediction Methods of Ice Shape in Ice-tolerant Airfoil Design
Authors: Zheng Hongdi , Liu Fan , Cui Xingda , Li Weibin , Ma Shuai , Xiao Zhongyun , Zhao Dazhi 
Published: December 2024

Abstract
Ice accretion damages the aerodynamic performance of aircraft during flight, so the airfoil design based on the concept of ice-tolerant has become a brand-new research direction. In order to shorten the Computational Fluid Dynamics (CFD) time of ice shape in the design of ice-tolerant airfoil, this paper studies a fast prediction method of ice shape based on the Class function/Shape function Transformation (CST) method and Kriging model. Firstly, airfoils are parameterized by the CST method to establish the airfoil database. Secondly, the ice shape database is obtained by CFD calculations, and then the ice shapes mapping on airfoils are generated by the Kriging model. Finally, the sample number, CST order, POD energy ratio and other relative parameters are studied based on the NACA0012 airfoil. Results show that the CFD time can be extensively saved in ice-tolerant design for airfoils, and further, for three-dimensional optimization problems with variable icing conditions.
Direct shooting method-based optimized design of novel bridge-like pavement structures
Authors: Zhai Xiaoliang , Wang Hanzhe , Hou Xu , He Lei 
Published: December 2024

Abstract
To mitigate the impact of subgrade settlement on pavement in permafrost regions, an innovative prefabricated pavement structure system composed of longitudinal and transverse beams combined with concrete slabs was proposed and designed. The mechanical performance indicators under the most unfavorable conditions were evaluated using ANSYS finite element software. The direct shooting method was employed to systematically optimize the dimensions of the prefabricated pavement structure components. The results indicate that the prefabricated pavement structure exhibits excellent deformation resistance during subgrade settlement. The direct shooting method optimized the prefabricated pavement structure, ensuring structural safety while reducing weight and minimizing construction costs. Furthermore, a correlation analysis was conducted on the dimensions of the structural components affecting maximum deformation, maximum equivalent stress, and overall structural volume. The analysis identified the significant influence of the upper flange plate of the steel beam and the bottom steel plate on the overall mechanical performance and steel consumption of the pavement structure.
Study on Resistance Characteristics of Honeycomb Ceramic thermal Storage Material with Different Pore Shapes and VOCs Thermal Oxidation Performance
Authors: Li Xiuquan , He Ziqiang , Huang Song , Li Zongshan , Zhang Longyi , Fan Dingding , Chen Qiaoqiao 
Published: December 2024

Abstract
Based on the square hole and triangular hole type honeycomb ceramic thermal storage material, this paper experimentally studies the influence of hole type, length, gas flow rate and Reynolds number on the resistance loss characteristics, and further explores the conversion characteristics of VOCs in different bed temperatures. The results show that the square hole type honeycomb ceramic has a larger equivalent diameter and less resistance loss than the triangular hole type honeycomb ceramic under the same porosity. At the same flow rate, the gas has sufficient heat transfer in the triangular hole honeycomb ceramic disturbance, and the VOCs oxidation conversion efficiency is high. When the honeycomb ceramic length is greater than 50 cm and the Reynolds number is greater than 550, the pressure loss shows a good linear increase trend with the change of the material length. When the honeycomb ceramic thermal storage material length exceeds 70 cm, the inlet effect can be ignored. When the bed temperature of the two honeycomb ceramic thermal storage material with different pore types reaches above 750 °C, the outlet VOCs concentration is below 15 mg/m3, and the conversion rate reaches above 97%.