bluuebunny/crossref_metadata_2025_split huggingface dataset:
The role of grain size in active galactic nuclei torus dust models
Authors: González-Martín Omaira , Ramos Almeida Cristina , Fritz Jacopo , Alonso-Herrero Almudena , Hönig Sebastian F. , Roche Patrick F. , Esparza-Arredondo Donaji , García-Bernete Ismael , García-Burillo Santiago , Osorio-Clavijo Natalia , Reyes-Amador Ulises , Stalevski Marko , Victoria-Ceballos César 
Published: June 2023

Context. Active galactic nuclei (AGN) are surrounded by dust within the central parsecs. The dusty circumnuclear structures, referred to as the torus, are mainly heated by radiation from the AGN and emitted at infrared wavelengths, producing the emergent dust continuum and silicate features. Fits to the infrared spectra from the nuclear regions of AGN can place constraints on the dust properties, distribution, and geometry by comparison with models. However, none of the currently available models fully describe the observations of AGN currently available.
Aims. Among the aspects least explored, here we focus on the role of dust grain size. We offer the community a new spectral energy distribution (SED) library which is based on the two-phase torus model developed before with the inclusion of the grain size as a model parameter, parameterized by the maximum grain size Psize or equivalently the mass-weighted average grain size ⟨P⟩.
Methods. We created 691 200 SEDs using the SKIRT code, where the maximum grain size can vary within the range Psize = 0.01 − 10.0 μm (⟨P⟩ = 0.007 − 3.41 μm). We fit this new library and several existing libraries to a sample of 68 nearby and luminous AGN with Spitzer/IRS spectra dominated by AGN-heated dust.
Results. We find that the GoMar23 model can adequately reproduce up to ∼85–88% of the spectra. The dust grain size parameter significantly improves the final fit in up to 90% of these spectra. Statistical tests indicate that the grain size is the third most important parameter in the fitting procedure (after the size and half opening angle of the torus). The requirement of a foreground extinction by our model is lower compared to purely clumpy models. We find that ∼41% of our sample requires that the maximum dust grain size is as large as Psize ∼ 10 μm (⟨P⟩∼3.41 μm). Nonetheless, we also remark that disk+wind and clumpy torus models are still required to reproduce the spectra of a nonnegligible fraction of objects, suggesting the need for several dust geometries to explain the infrared continuum of AGN.
Conclusions. This work provides tentative evidence for dust grain growth in the proximity of the AGN.
Damping of coronal oscillations in self-consistent 3D radiative magnetohydrodynamics simulations of the solar atmosphere
Authors: Kohutova P. , Antolin P. , Szydlarski M. , Carlsson M. 
Published: June 2023

Context. Oscillations are abundant in the solar corona. Coronal loop oscillations are typically studied using highly idealised models of magnetic flux tubes. In order to improve our understanding of coronal oscillations, it is necessary to consider the effect of a realistic magnetic field topology and the density structuring.
Aims. We analyse the damping of coronal oscillations using a self-consistent 3D radiation-magnetohydrodynamics simulation of the solar atmosphere spanning from the convection zone into the corona, the associated oscillation dissipation and heating, and finally, the physical processes that cause the damping and dissipation. The simulated corona that forms in this model does not depend on any prior assumptions about the shape of the coronal loops.
Methods. We analysed the evolution of a bundle of magnetic loops by tracing the magnetic field.
Results. We find that the bundle of magnetic loops shows damped transverse oscillations in response to perturbations in two separate instances, with oscillation periods of 177 s and 191 s, velocity amplitudes of 10 km s−1 and 16 km s−1, and damping times of 176 s and 198 s. The coronal oscillations lead to the development of velocity shear in the simulated corona, which results in the formation of vortices seen in the velocity field that are caused by the Kelvin-Helmholtz instability. This contributes to the damping and dissipation of the transverse oscillations.
Conclusions. The oscillation parameters and evolution we observed are in line with the values that are typically seen in observations of coronal loop oscillations. The dynamic evolution of the coronal loop bundle suggests that the models of monolithic and static coronal loops with constant lengths might need to be re-evaluated by relaxing the assumption of highly idealised wave guides.
L’accès collectif au foncier irrigué à Ross Béthio, Sénégal : entre inégalités de genre et dynamiques de pouvoir entre femmes
Authors: Coulibaly Oumoul Khaïry 
Published: June 2023

Cet article a pour objectif d’évaluer l’efficacité de l’accès collectif à la terre pour améliorer les droits fonciers des femmes dans un contexte d’agriculture irriguée dans le delta du fleuve Sénégal. L’expérience des périmètres irrigués villageois aménagés pour les femmes des groupements de l’Union des femmes productrices de Ross Béthio, constitue notre cadre d’étude. Les résultats révèlent l’existence d’un mouvement associatif féminin capable de porter les revendications des femmes ; ils mettent aussi en exergue les capacités d’influence de femmes leaders que ce mouvement a fait émerger. Cependant, ils montrent aussi l’ambiguïté de l’action collective féminine et l’entrecroisement intersectionnel des inégalités de genre et de statut social qui favorisent la monopolisation des ressources collectives par une minorité, accentuant ainsi la vulnérabilité des femmes les plus marginalisées en termes d’accès au foncier irrigué.
Impact de la réalité externe sur la relation psychothérapeute/patient, une recherche qualitative
Authors: Nassif Rose Marie , El Husseini Mayssa , Moro Marie-Rose 
Published: June 2023

La pandémie, la crise économique et d’autres perturbations collectives ont créé un environnement tendu et incertain pour les psychothérapeutes et les patients dans de nombreux pays du monde. Ces différentes crises ont forcé les psychothérapeutes et les psychanalystes à faire des réaménagements psychiques et d’espace, pour continuer à travailler avec leurs patients et pour engager de nouvelles prises en charge.Une recherche internationale en collaboration avec des universités en France, au Liban et au Brésil, est menée pour explorer l’interférence de la réalité commune potentiellement traumatique sur la relation thérapeutique et le cadre.Cette recherche qualitative est conçue sur les principes de l’analyse phénoménologique interprétative (Smithet al.,2009). 40 entretiens semi-structurés sont menés avec des participants (psychologues et psychiatres) de France, Liban, Italie, USA et Brésil.La durée moyenne des entretiens est de 90 minutes. Les entretiens sont enregistrés, retranscrits et analysés par deux chercheurs puis soumis à une validation inter-juridique. Trois thèmes ont émergé des résultats préliminaires :Les frontières à l’épreuve.L’identité professionnelle mise à mal.L’impact traumatique et résurgences traumatiques.Cette recherche met en lumière la capacité de créativité des thérapeutes dans un contexte traumatique. Les résultats nous permettront de fournir des indications importantes sur les activités et les formations à mettre en place pour aider les psychothérapeutes à travailler, élaborer et réfléchir dans des conditions de stress sévère qu’ils partagent avec leurs patients.
Underwater cap-suction pseudopolyp formation for endoscopic mucosal resection: a simple technique for treating flat, appendiceal orifice or ileocecal valve colorectal lesions
Authors: Uchima Hugo , Calm Anna , Muñoz-González Raquel , Caballero Noemí , Rosinach Mercé , Marín Ingrid , Colán-Hernández Juan , Iborra Ignacio , Castillo-Regalado Edgar , Temiño Rocío , Mata Alfredo , Turró Román , Espinós Jorge , Moreno De Vega Vicente , Pellisé Maria 
Published: June 2023

Background We aimed to evaluate the safety and technical success of an easy-to-use technique that applies underwater cap suction pseudopolyp formation to facilitate the resection of flat lesions or those at the appendiceal orifice or ileocecal valve.
Methods We retrospectively analyzed a register of consecutive cap suction underwater endoscopic mucosal resection (CAP-UEMR) procedures performed at two centers between September 2020 and December 2021. Procedures were performed using a cone-shaped cap, extending 7 mm from the endoscope tip, to suction the lesion while submerged underwater, followed by underwater snare resection. Our primary end point was technical success, defined as macroscopic complete resection.
Results We treated 83 lesions (median size 20 mm; interquartile range [IQR] 15–30 mm) with CAP-UEMR: 64 depressed or flat lesions (18 previously manipulated, 9 with difficult access), 11 from the appendix, and 8 from the ileocecal valve. Technical success was 100 %. There were seven intraprocedural bleedings and two delayed bleedings, all managed endoscopically. No perforations or other complications occurred. Among the 64 lesions with follow-up colonoscopy, only one recurrence was detected, which was treated endoscopically.
Conclusions CAP-UEMR was a safe and effective technique for removing nonpolypoid colorectal lesions, including those arising from the appendiceal orifice or ileocecal valve.
Synthesis of Quinoline and Quinolin-2(1H)-one Derivatives via Nickel Boride Promoted Reductive Cyclization
Authors: Bera Mrinal K. , Sarkar Rumpa , Samanta Surya Kanta , Menon Anila M. , Chopra Deepak , Ganguly Debabani 
Published: June 2023

AbstractA mild and efficient approach for the synthesis of diversely substituted quinoline and quinolin-2-one derivatives is disclosed. In situ generated nickel boride proved to be an effective promoter of the reductive cyclization reaction. Broad substrate scope, mild reaction conditions, consistent yield, and a wide range of functional group tolerance are the other notable features of the newly discovered reaction. A large number of quinoline and quinolin-2-one derivatives may be prepared from milligram to multigram scale employing this intramolecular reductive cyclization protocol.
Age-Related Changes in Temporal Binding Involving Auditory and Vestibular Inputs
Authors: Malone Alexander K. , Hungerford Michelle E. , Smith Spencer B. , Chang Nai-Yuan N. , Uchanski Rosalie M. , Oh Yong-Hee , Lewis Richard F. , Hullar Timothy E. 
Published: June 2023

AbstractMaintaining balance involves the combination of sensory signals from the visual, vestibular, proprioceptive, and auditory systems. However, physical and biological constraints ensure that these signals are perceived slightly asynchronously. The brain only recognizes them as simultaneous when they occur within a period of time called the temporal binding window (TBW). Aging can prolong the TBW, leading to temporal uncertainty during multisensory integration. This effect might contribute to imbalance in the elderly but has not been examined with respect to vestibular inputs. Here, we compared the vestibular-related TBW in 13 younger and 12 older subjects undergoing 0.5 Hz sinusoidal rotations about the earth-vertical axis. An alternating dichotic auditory stimulus was presented at the same frequency but with the phase varied to determine the temporal range over which the two stimuli were perceived as simultaneous at least 75% of the time, defined as the TBW. The mean TBW among younger subjects was 286 ms (SEM ± 56 ms) and among older subjects was 560 ms (SEM ± 52 ms). TBW was related to vestibular sensitivity among younger but not older subjects, suggesting that a prolonged TBW could be a mechanism for imbalance in the elderly person independent of changes in peripheral vestibular function.
Research on registration error compensation of large-scale measurement field based on neural network
Authors: Huang Lulu , Huang Xiang , Li Shuanggao , Hou Guoyi 
Published: June 2023

The combination of large tooling size, environmental vibration, and equipment errors at the aircraft assembly site leads to errors in the enhanced reference system (ERS) point measurement information. ERS point errors directly reduce the accuracy of the assembly measurement field. This paper proposes ERS point error prediction and registration compensation based on the neural network to address this problem. First, the effects of equipment measurement errors and environmental vibration factors on the measurement field are studied. The ERS point error prediction model based on the neural network is established. On this basis, model evaluation is used to assess the prediction model of this paper. Then, a measurement field registration compensation model is constructed based on the neural network error results for ERS point compensation analysis. Finally, an experimental validation platform was built to predict the ERS point errors and compensate for the constructed measurement fields using the method in this paper. The experimental results show that, compared with the conventional method, the maximum registration errors in the X, Y, and Z directions are reduced from 0.0812, −0.0565, and −0.2810 to −0.0184, −0.0010, and 0.0022 mm, respectively, after compensation in this paper. The method proposed in this paper can not only predict the ERS point error state and provide a reference for designers but also guide the selection of appropriate ERS points when constructing the measurement field. The compensation method in this paper effectively reduces the measurement field registration error.
The polysemy of the Japanese temperature adjective atsui
Authors: Wang Haitao , Kanamaru Toshiyuki , Li Ke 
Published: June 2023

Abstract
This study adopts a corpus-based behavioral profile approach to explore the semantic relationships among the senses of the Japanese temperature adjective atsui (‘hot’). As a result, the hierarchical cluster analysis represents the distributional (dis)similarity of the ten senses of atsui. Average silhouette width suggests a two-cluster interpretation, which reveals that senses derived from the same experience (sensory or subjective) tend to have similar usage characteristics. The discriminating properties of four subclusters and usage characteristics of each sense have been identified by means of computing t-values. Also, the structure of the hypothesized network has been represented based on the distributional (dis)similarity of the ten senses. The relationships among these ten senses and the usage characteristics identified in this study provide insight into Japanese lexicography. Moreover, as the first attempt to apply the behavioral profile to the investigation of Japanese polysemy, this study holds implications for lexical semantics in Japanese.
Multi-soliton solutions and asymptotic analysis for the coupled variable-coefficient Lakshmanan-Porsezian-Daniel equations via Riemann-Hilbert approach
Authors: Ma Lei-Nuo , Li Si , Wang Tian-Mu , Xie Xi-Yang , Du Zhong 
Published: June 2023

Abstract
In this paper, we study multi-soliton solutions and asymptotic analysis for the coupled variable-coefficient Lakshmanan-Porsezian-Daniel equations, which describe the simultaneous propagation of nonlinear waves in the inhomogeneous optical fibers. We analyze the spectrum of the Lax pair to establish the Riemann-Hilbert problem. Using such Riemann-Hilbert problem, we calculate various multi-soliton solutions without reflection, including breather-like and mixed solitons. We illustrate the propagation and interaction dynamics of the solitons through appropriate parameter selection and asymptotic analysis. We find that the interaction between solitons is elastic, the amplitudes of solitons are only determined by the initial velocity and interaction, and the soliton with lower energy always yields a position shift when elastic interaction occurs. In addition, we observe that the existence time of the wave changes with energy and that multiple elastic interactions between solitons can be obtained when we choose appropriate variable coefficients. Then, we investigate the influences of group velocity dispersions and fourth-order dispersions on the interactions of solitons through parameter modulation mode and asymptotic analysis. Furthermore, we present several new types of nonlinear phenomena graphically, including elastic interactions between parabolic solitons and hump-type solitons, elastic interactions between cubic solitons and hump-type solitons, and periodic-changing propagations.
Study on erosion-reducing additives and erosion inhibition principle for R2 high energy propellant
Authors: Zhizhong Gao , Peichen Han , Qiong Liu , Hao Guo , Hongye Liang , Ping Du 
Published: June 2023

Abstract
In view of the serious erosion problem of the gun barrel with the R2 high-energy propellant, an erosion tube device method was adopted, and silane organic substances, silicate inorganic substances, titanium dioxide nanoparticles and paraffin wax were selected as erosion-reducing additives. The effect of different erosion-reducing additives on the erosive property of R2 propellant was investigated by means of external addition. The erosion inhibition principle was also briefly investigated by scanning electron microscope and energy dispersive X-ray spectroscopy. The results show that paraffin wax has excellent ability to improve gun barrel erosion resistance, the erosion-reducing efficiency can reach up to 31.2%, the erosion-reducing efficiency of silanes is the next most effective, and silicate is poor.
Study on In-line Insensitive High Explosive Train Based on Multipoint Overpressure Initiation
Authors: Qin Guo-sheng , Zhou Mi , Wang Ke-xuan , Wang Yin , Tong Hong-hai 
Published: June 2023

Abstract
The feasibility of in-line insensitive high explosive train based on multipoint overpressure initiation is studied in this paper. The output capacity of the multi-point EFI is verified by the initiation margin test. The multi-point EFI can reliably detonate the insensitive booster TATB. Be directed against the multi-point EFI, the slow cook-off test and Liquid fuel fire test were carried out and the response level was not greater than combustion. A liquid fuel fire test was carried out aimed at a small-scale bomb composed by multi-point EFI and insensitive booster TATB. The response grade of small-scale bomb in the liquid fuel fire test is combustion. The results of series of tests show that a in-line insensitive high explosive train can be formed by using the multi-point EFI and insensitive booster.
The aging property and storage life prediction of EPDM
Authors: shuang-hong Wang , chang-sheng Zhou , chao-fan Han 
Published: June 2023

Abstract
The performance change of Ethylene propylene diene monomer (EPDM) was studied by the accelerated aging experimental method, and its lifespan was predicted. The results showed that the thermal oxidation aging of EPDM is dominated by the crosslinking reaction. With the extension of the thermal oxidation aging time, the total crosslinking density and tensile permanent deformation gradually decrease, while the tensile strength and hardness increase gradually. The life prediction formula of EPDM under the thermal-oxidative aging condition was obtained by the linearization method of the kinetic curve. When tensile permanent deformation was used as the evaluation index, the life was 30 a at the temperature of 296.15 K.
Cross-scale Numerical Simulation of Carbon Fiber Reinforced PTFE/Al
Authors: Wang Jin , Liu Zhen-Yang , Zhang Yong , Ge Chao 
Published: June 2023

Abstract
In view of strengthening reinforced PTFE/Al composite system, based on the fiber strengthening mechanism and cross-scale theory of composite material, the research about material component system design, mechanical property design and microstructure optimization was carried out by means of theoretical analysis and cross-scale numerical simulation. The mechanical properties of the composite system with different carbon fiber content and aspect ratio were studied by using PTFE/Al reinforced composite system with short carbon fiber.
Pitch Angle Error Measurement Technology for Track and Control Equipment Based on Trajectory
Authors: Qiu B A , Sun P , Li L L 
Published: June 2023

Abstract
Due to the large support span of the pitching mechanism of the Fork-arm antenna pedestal of large phased array track and control equipment, the antenna array was deflected downward by its self-weight load. When measuring the pitch angle error, the pitch axis and the normal pointing angle of the array fluctuated, which significantly interfered with the evaluation results of common measuring methods for pitch angle error such as electronic goniometer. In view of the above problems, this paper proposed a pitch angle error measurement technology of track and control equipment based on motion trajectory. In this method, Target point for measurement was set in the appropriate area of the end face of the array skeleton, and the laser tracker was used to track and capture the spatial coordinates and trajectory of the target point in the process of pitching motion. The geometric model of the pitch angle algorithm was constructed based on the circular motion trajectory, which eliminated the influence of the fluctuation of the pitch axis and the normal pointing angle of the array on the pitch angle. The pitch angle error algorithm and data processing model were established, and the programmed rapid calculation and evaluation of the pitch angle deviation of track and control equipment were realized.
Target recognition and tracking system based on UAV platform
Authors: Han Xingye , Wang Dongfei , Wang Qiang , Tang Yunlong 
Published: June 2023

Abstract
Machine learning can extract the features of the target from the known image dataset and detect the target quickly by using the trained deep neural network. Due to UAVs’ fast flight speed and long detection distance, real-time and accurate target detection requirements are relatively high. For such scenarios,a ground object recognition and tracking method that integrates the YOLOv5 target detection algorithm and KCF target tracking algorithm are proposed. The combination of the two algorithms can meet the requirements of recognition speed, recognition rate, and tracking accuracy in the current scene. Two algorithms are run simultaneously in the recognition process, the detection frame with the highest confidence is selected as the final detection result, and the detected target is tracked by the KCF target tracking algorithm based on correlation filtering. The experimental results show that this method not only meets the requirements of recognition distance, recognition accuracy, and recognition speed of ground target but also can track a ground target in real-time, with strong robustness and real-time performance.
Test of pressure load on surface of typical concrete structure caused by underwater explosion
Authors: Xue Chaoyang , Kong Deren 
Published: June 2023

Abstract
To study the pressure load of the underwater explosion on the typical surface of a concrete structure, composition B were used to explode in water, and the shock wave pressure on the front, side, top and back of the concrete pile was measured. The theoretical peak pressure of shock wave at the same distance in infinite water was calculated. The results show that the peak pressure of reflected shock wave at the front of concrete pile is the largest, which is nearly twice the theoretical value of the peak pressure of reflected shock wave at the same distance in infinite water. When the shock wave continues to propagate on the side and top surface, the peak pressure on the side is higher than that on the top surface. The peak pressure of the shock wave diffused from the side and top surfaces on the back is smaller than that of the other surfaces.