bluuebunny/crossref_metadata_2025_split huggingface dataset:
Concealing Stuttering at School: “When You Can't Fix It…the Only Alternative Is to Hide It”
Authors: Gerlach-Houck Hope , Kubart Kristel , Cage Eilidh 
Published: November 2022

Purpose:
The purpose of this study was to explore experiences with concealing stuttering in children and young people who stutter based on recollections from adults. In addition, we explored how school-based speech therapists can be helpful or unhelpful to children who are concealing stuttering from the perspective of adults who stutter.

Method:
Thirty adults who stutter, who previously or currently conceal stuttering, participated in semistructured interviews exploring their early experiences with hiding stuttering. Purposeful and random sampling was used to diversify experiences and opinions. Reflexive thematic analysis was used to develop themes and subthemes to describe participants' experiences.

Results:
All participants in the study reported beginning to conceal stuttering at 18 years of age or younger, with more than two thirds sharing that they began in elementary school. Participants reported that exposure to implicit and explicit ableist messaging about stuttering and traumatic social experiences at school contributed to their inclination to hide disfluencies. Many participants described concealment as a strategy for protecting themselves from stigma. Several participants condemned fluency shaping, calling it harmful and likening it to teaching concealment. Participants believed that speech therapists could be helpful by promoting safe and supportive school environments and by being responsive to the social and emotional challenges that can accompany speaking differently and navigating stigma at school.

Conclusions:
Some children who stutter may attempt to protect themselves from stigma by concealing their disfluencies, but doing so can feel isolating and confusing. Speech therapists can play an important role in making the school environment safer and more supportive for children who stutter.
HeterBot: A heterogeneous mobile manipulation robot for versatile operation
Authors: Ye Linqi , Guo Jiatai , Li Jiayi , Liu Houde , Wang Xueqian , Liang Bin 
Published: November 2022

AbstractThis study presents the overall architecture of HeterBot, a heterogeneous mobile manipulation robot developed in our lab, which is designed for versatile operation in hazardous environments. The most significant feature of HeterBot is the heterogeneous design created by adopting the idea of ‘big arm + small arm’ and ‘big car + mini car’. This combination has the advantage of functional complementation, which achieves performance promotion in both locomotion and manipulation capabilities, making HeterBot distinguished from other mobile manipulation robots. Besides, multiple novel technologies are integrated into HeterBot to expand its versatility and ease of use, including Virtual Robot Experimentation Platform‐based teleoperation, reconfigurable end effectors, laser‐aided grasping, and manipulation with customised tools. Experimental results validate the effectiveness of HeterBot in various locomotion and manipulation tasks. HeterBot displays huge potential in future applications, such as searching and rescue.
Generic synthetic inertia scheme for voltage source inverters
Authors: Liang Jifeng , Fan Hui , Deng Zhaoshun , Zhu Jiebei , Yu Lujie , Li Tiecheng , Luo Peng , Gao Zeming , Wang Yajun 
Published: November 2022

AbstractSystem kinetic inertia is declining due to the rapid replacement of synchronous generators (SG) by renewable power generations (RPG). To maintain grid inertia, this paper proposes a generic synthetic inertia (GSI) scheme for RPGs, enabling inertial response by a supercapacitor (SC) bank integrated with a voltage source inverter (VSI) DC link via a DC/DC converter. A GSI control loop is developed for the DC/DC converter controller to vary the SC voltage along with the grid frequency for power exchange following the SG swing equation. The GSI scheme realizes plug‐and‐play advantage without modifying the RPG original system. Small‐signal stability analysis is carried out to optimize the GSI controller parameters. The performance of the GSI scheme is evaluated using a modified IEEE 39‐bus test system.
Tracking magnetic flux and helicity from the Sun to Earth
Authors: Thalmann J. K. , Dumbović M. , Dissauer K. , Podladchikova T. , Chikunova G. , Temmer M. , Dickson E. , Veronig A. M. 
Published: November 2022

Aims.We analyze the complete chain of effects – from the Sun to Earth – caused by a solar eruptive event in order to better understand the dynamic evolution of magnetic-field-related quantities in interplanetary space, in particular that of magnetic flux and helicity.Methods.We study a series of connected events – a confined C4.5 flare, a flare-less filament eruption, and a double-peak M-class flare – that originated in NOAA active region (AR) 12891 on late 2021 November 1 and early 2021 November 2. We deduce the magnetic structure of AR 12891 using stereoscopy and nonlinear force-free (NLFF) magnetic field modeling, allowing us to identify a coronal flux rope and to estimate its axial flux and helicity. Additionally, we compute reconnection fluxes based on flare ribbon and coronal dimming signatures from remote sensing imagery. Comparison to corresponding quantities for the associated magnetic cloud (MC) deduced from in situ measurements from Solar Orbiter and near-Earth spacecraft allows us to draw conclusions on the evolution of the associated interplanetary coronal mass ejection (CME). The latter analysis is aided by the application of geometric fitting techniques (graduated cylindrical shell modeling; GCS) and interplanetary propagation models (drag-based ensemble modeling; DBEM) to the interplanetary CME.Results.NLFF modeling suggests the magnetic structure of the host AR was in the form of a left-handed (negative-helicity) flux rope reaching altitudes of 8−10 Mm above photospheric levels, which is in close agreement with the corresponding stereoscopic estimate. GCS and DBEM modeling suggest that the ejected flux rope propagated in a self-similar expanding manner through interplanetary space. Comparison of magnetic fluxes and helicities processed by magnetic reconnection in the solar source region and the respective budgets of the MC indicate a considerable contribution from the eruptive process, though the pre-eruptive budgets also appear to be relevant.
Study of metasurface coated bowtie antenna to decouple closely coupled arrays
Authors: Lee Doojin 
Published: November 2022

This paper presents the numerical studies of the bowtie antenna with and without metasurface in cross-coupled arrays. The single bowtie antennas coated by the metasurface are designed at the neighboring frequency of 3 GHz. The cloaked frequency of the cloaked bowtie antennas is controlled by components that consist of metasurface such as the dielectric constant of the supporting material, slot width, spacing of the slot, and the height of the material. The cloaked bowtie antenna has characteristics such as the minimum reflection from the antenna at the designed frequency and, at the same time the radar cross section has a low value at the cloaked frequency. This characteristic has been intensively explored with closely cross-coupled antennas in array configurations as 1D lateral arrangement and 2D arrangement for the sequential and simultaneous modes. It is numerically confirmed that the characteristics of the cloaked coupled arrays are kept the same as those of a standalone array, which is shown to have robust characteristics to the mutual coupling between strongly coupled elements.
Impact energy harvesting and storage through duct airflow using magnetostrictive clad films
Authors: Ueno Toshiki , Kurita Hiroki , Narita Fumio 
Published: November 2022

The Internet of Things (IoT) requires power supplies without recharging. We conceived the idea of generating electricity from the impact of magnetostrictive materials against a propeller. This study evaluated the energy harvesting performance and energy storage capabilities of Fe–Co alloy and Ni clad (Fe–Co/Ni) films that directly strike propellers rotated by the wind in a duct airflow. The 0.08- and 0.2-mm-thick Fe–Co/Ni films generated powers of 28.1 and 89.4 µW, respectively. Moreover, the 0.08-mm-thick Fe–Co/No film generated power lower than that generated by the 0.2-mm-thick Fe–Co/Ni film. However, at a wind speed of 1.5 m/s, the 0.08-mm-thick Fe–Co/Ni film generated power, whereas the 0.2-mm-thick Fe–Co/Ni film stopped the rotation of propellers and did not generate any power. Furthermore, the Fe–Co/Ni film was successfully charged in a capacitor, and the stored voltages were 108.3 mV for the 0.08-mm-thick Fe–Co/Ni films for 30 min and 337.3 mV for the 0.2-mm-thick Fe–Co/Ni films for 1 h. It is also worth noting that no damage occurred to the surfaces of the Fe–Co/Ni films.
Relativistic correction to the dissociation temperature of B

c
mesons in a hot medium*
Authors: Li Guangyu , Chen Baoyi , Liu Yunpeng 
Published: November 2022

Abstract
By solving two body Dirac equations with potentials at finite temperature, we calculate the dissociation temperature

of

mesons in quark-gluon plasma. It is found that

becomes higher with the relativistic correction than the

from the Schrödinger equation. Both the short range interaction and the constant term of the potential at the long-range scale have a contribution to the shift of

, while the spin interaction is negligible.
Spectral branch points of the Bloch–Torrey operator
Authors: Moutal Nicolas , Grebenkov Denis S 
Published: November 2022

Abstract
We investigate the peculiar feature of non-Hermitian operators, namely, the existence of spectral branch points (also known as exceptional or level crossing points), at which two (or many) eigenmodes collapse onto a single eigenmode and thus loose their completeness. Such branch points are generic and produce non-analyticities in the spectrum of the operator, which, in turn, result in a finite convergence radius of perturbative expansions based on eigenvalues and eigenmodes that can be relevant even for Hermitian operators. We start with a pedagogic introduction to this phenomenon by considering the case of

2
×
2

matrices and explaining how the analysis of more general differential operators can be reduced to this setting. We propose an efficient numerical algorithm to find spectral branch points in the complex plane. This algorithm is then employed to show the emergence of spectral branch points in the spectrum of the Bloch–Torrey operator

−

∇
2

−
i
g
x

, which governs the time evolution of the nuclear magnetization under diffusion and precession. We discuss their mathematical properties and physical implications for diffusion nuclear magnetic resonance experiments in general bounded domains.
Nb2O5nano and microspheres fabricated by laser ablation
Authors: Abdulrahman Tamara E , Salim Evan T , Mahdi Rana O , Wahid MHA 
Published: November 2022

AbstractThis work presents a successful and novel method for the preparation of Nb2O5nanoparticles via pulsed laser ablation in liquid (PLAL) by employing a pure Nb plate and deionised water. The effect of various laser fluences on the chemical, structural, morphological and optical characteristics was studied. Chemical characteristics confirmed the formation of the orthorhombic T-Nb2O5structure. While the morphology characteristics showed spherical particles and its density dependency on the laser fluence. The Nb2O5stoichiometry ranged between 42.20% and 88.86%. Additionally, the structural analysis showed peaks related to the orthorhombic T-Nb2O5structure with grain size between 58.2 and 244.6 nm. Lastly, topographical images showed that the average particle size was in the range 6.8 and 32 nm, and sample roughness was between 17.39 and 1.377 nm.
Antibacterial activities and photocatalyzed degradation of textile dyeing waste water by Mn and F co-doped TiO2nanoparticles
Authors: Ancy K , Sarojini V , Christy A Jegatha , Bakri Marwah , El Manna Chadlia , Florence S Sasi , Vijilvani C , Bindhu M R , Bai S Jeslin Sunitha 
Published: November 2022

AbstractIn the present study, synthesis and characterisation of titanium dioxide (TiO2) nanoparticles concurrently doped with fluorine (F) and manganese (Mn) are studied for the improved photocatalytic degradation and bacterial inhibition. The absorption spectrum observed at 400 nm is blue shifted to 398 nm in co-doped TiO2, which confirmed the increase in incorporation of F and Mn. Transmission electron microscopic images and XRD results confirm that the size of the TiO2nanoparticles decreased with increasing concentration of co-dopants. Co-doping of TiO2with F and Mn is confirmed by FTIR, XRD, EDAX and XPS studies. The TiO2nanoparticles prepared at higher concentration of dopants show the existence of nanorods. It is obvious that the doping of TiO2with Mn and F can degrade textile wastewater and methylene blue with 120 min of visible light irradiation. The antimicrobial activities of the prepared samples increased with increasing doping level of F and Mn againstStaphylococus aureausandEscherichia coli.
Influence of sintering pressure on microstructure and tribological properties of Copper–Tin composites containing graphite and MoS2
Authors: Su Yuanming , Jiang Feng , Xiao Zeyu , Long Mengjun , Wu Feifei , Wu Mingjin , Ye Pengchen 
Published: November 2022

Abstract
Powder metallurgy was employed to facilitate self-lubricating composites using Cu-coated graphite powder, Cu-coated MoS2 powder and Cu-Sn alloy powder as raw materials. Investigations were conducted into how the sintering pressure affected the composites’ density, hardness, microstructure, and tribological properties. The results demonstrated that the porosity of the composites was reduced, the density increased from 6.46 g cm−3 to 7.32 g cm−3, the matrix grains were refined, and the hardness increased from 53.55 HV to 86.41 HV with an increase in sintering pressure from 30 MPa to 65 MPa. Additionally, raising the sintering pressure improved the interface bonding between the matrix and the solid lubricant graphite, MoS2. High sintering pressure was found to decrease the time needed for initial running-in and stabilize the volatility of friction coefficient. When the sintering pressure increased, the material’s friction coefficient first reduced and then increased while the wear rate first increased and then declined. Composites have good friction and wear qualities as a result of the production of a composite lubricating film containing graphite, MoS2, metal oxide, etc on the wear surface. Wear was brought on by the combined effects of abrasive wear, adhesive wear, material loss as a result of friction surfaces’ transverse crack expansion, and oxidation wear.
Thermal stability and behaviour of paraffin nano Al2O3, graphene and surfactant sodium oleate composite as phase change material
Authors: Prabhu S Selva , Selvakumar P , Heric J S 
Published: November 2022

Abstract
Organic phase change materials like paraffin possess high latent heat yet incredibly low thermal conductivity. For improving the thermal conductivity, nanomaterials are introduced into the phase change materials. Thermal energy storage applications benefit from the use of phase transition materials with high thermal conductivity and latent heat of fusion. In this work to increase the dispersion of the alumina and graphene nanoparticles, a novel nanocomposite phase change material was produced by utilizing sodium oleate as a surfactant. The surfactant sodium oleate is prepared with oleic acid and methanol, The mixture is prepared using sodium oleate, Alumina Nanoparticle, and Graphene in the mass ratio of 1:3:0.5 is mixed with paraffin in the weight percentage of 7.5 and 10 and thermal stability study was carried out. Alumina nanoparticles were synthesized and prepared by using a microwave-assisted chemical precipitation approach which is more effective and graphene nanoparticles were prepared by using modified hummer’s method. Thermocycling was used for up to 100 cycles to determine the melting point, latent heat, and long-term thermal stability of nanocomposites with phase change material. Differential Scanning Calorimetry (DSC) was used to evaluate the heat storage behaviour of the samples, and the heating rate of nanocomposites containing PCMs was investigated. The transient hot wire method was then utilised to assess the PCM’s actual thermal conductivity. From the obtained results, nanocomposite with 7.5 wt% additives show maximum thermal stability and latent heat (161.09 KJ Kg−1) for 100 cycles with an increase in 42% effective thermal conductivity, Nanocomposite with 10 wt% shows 57% higher thermal conductivity. But shows lower thermal stability and very low latent heat (120.44 KJ Kg−1). It is understood from the results that nanoparticle and surfactant addition gives a positive rise in latent heat.
Influence of vacuoles with gas–liquid inclusions on the thermobaric destruction conditions of natural quartz under dynamic heating in an RF-TICP torch system
Authors: MIAO Long , NIE Mingqing , GRISHIN Yuri Mihailovich , WANG Xiaoyu , ZHU Zhengxi , SONG Jiahui , LIANG Fuwen , HE Zihao , TIAN Feng , WANG Ningfei 
Published: November 2022

Abstract
In the present work, the turbulent mixing process of a polydisperse quartz particle flow with a plasma stream generated by a radio-frequency (RF) inductively coupled plasma torch was numerically studied. The thermobaric stress in the quartz particles under dynamic heating in a heterogeneous plasma flow was determined by a two-stage approximation approach. The effect of the presence of vacuoles in natural quartz on the particle thermobaric destruction conditions was studied. It was found that the equivalent thermal and baric stresses in quartz particles may significantly increase in the presence of vacuoles within a small gas volume fraction. The influence of the regime and energetic working conditions of an RF inductively coupled plasma torch system on the particle thermobaric destruction conditions was examined, and a recommendation was given to promote the degree of thermobaric destruction of quartz particles, which is of substantial importance for improving the overall enrichment efficiency of quartz concentrates.
A unified secondary electron cut-off presentation and common mistakes in photoelectron spectroscopy
Authors: Schultz Thorsten 
Published: November 2022

Abstract
Photoelectron spectroscopy is a powerful surface analysis technique that can differentiate different bonding environments and directly determine the absolute work function of a sample. Despite its ever-easier accessibility—or perhaps precisely because of it—some common mistakes or bad habits are often found in the literature when it comes to the evaluation or presentation of photoelectron spectroscopy data. Here we address some of these issues and give suggestions for best practice, i.e., a proper presentation of the secondary electron cut-off used for work function determination, correct binding energy referencing and some tips for appropriate peak fitting, as well as valuable literature references to more detailed tutorials. Finally, we present a concise step-by-step guide on how to conduct a complete x-ray photoelectron spectroscopy analysis of an unknown sample.
Assessing polygenic risk score models for applications in populations with under-represented genomics data: an example of Vietnam
Authors: Pham Duy , Truong Buu , Tran Khai , Ni Guiyan , Nguyen Dat , Tran Trang T H , Tran Mai H , Nguyen Thuy Duong , Vo Nam S , Nguyen Quan 
Published: November 2022

Abstract
Most polygenic risk score (PRS)models have been based on data from populations of European origins (accounting for the majority of the large genomics datasets, e.g. &gt;78% in the UK Biobank and &gt;85% in the GTEx project). Although several large-scale Asian biobanks were initiated (e.g. Japanese, Korean, Han Chinese biobanks), most other Asian countries have little or near-zero genomics data. To implement PRS models for under-represented populations, we explored transfer learning approaches, assuming that information from existing large datasets can compensate for the small sample size that can be feasibly obtained in developing countries, like Vietnam. Here, we benchmark 13 common PRS methods in meta-population strategy (combining individual genotype data from multiple populations) and multi-population strategy (combining summary statistics from multiple populations). Our results highlight the complementarity of different populations and the choice of methods should depend on the target population. Based on these results, we discussed a set of guidelines to help users select the best method for their datasets. We developed a robust and comprehensive software to allow for benchmarking comparisons between methods and proposed a computational framework for improving PRS performance in a dataset with a small sample size. This work is expected to inform the development of genomics applications in under-represented populations. PRSUP framework is available at: https://github.com/BiomedicalMachineLearning/VGP
Intrinsic brain functional connectivity patterns in alcohol use disorder
Authors: Maleki Nasim , Sawyer Kayle S , Levy Sarah , Harris Gordon J , Oscar-Berman Marlene 
Published: November 2022

Abstract
Alcohol use disorder is associated with damaging effects to the brain. This study aimed to examine differences in static and dynamic intrinsic functional connectivity patterns in individuals with a history of alcohol use disorder in comparison to those with no history of alcohol abuse. A total of 55 participants consisting of 23 patients and 32 control individuals underwent neuropsychological assessments and resting-state functional magnetic resonance imaging on a 3 Tesla MRI scanner. Differences in functional connectivity between the two groups were determined using static and dynamic independent component analysis. Differences in static functional connectivity between the two groups were identified in the default mode network, attention network, frontoparietal network, frontal cortical network and cerebellar network. Furthermore, the analyses revealed specific differences in the dynamic temporal characteristics of functional connectivity between the two groups of participants, in a cluster involving key regions in reward, sensorimotor and frontal cortical functional networks, with some connections correlating with the length of sobriety and some others with the severity of drinking. The findings altogether suggest dysregulation in the intrinsic connectivity of cortico-basal ganglia-thalamo-cortical loops that may reflect persistent alcohol use disorder-related network abnormalities, compensatory recovery-related processes whereby additional neural resources are recruited to achieve normal levels of performance, or a predisposition toward developing alcohol use disorder.