bluuebunny/crossref_metadata_2025_split huggingface dataset:
Same-different letter decision task: a study with Spanish children with dyslexia (Tarea de decisión de letras igual-diferente: un estudio con niños españoles con dislexia)
Authors: Martínez-García Cristina , Cuetos Fernando , Suárez-Coalla Paz 
Published: August 2022

It is common to see mirror errors in letters in early stages of reading due to the mirror-generalization process that allows a visual stimulus to be identified independently of its orientation. To avoid such errors, this process must be inhibited. A special case would be children with dyslexia since their difficulties with the alphabetic code may also delay the acquisition of correct letter orientation. We investigated the relationship between reversible errors in reading and dyslexia. Twenty-seven Spanish-speaking children with dyslexia (7–12 years old) and 27 chronological-age-matched controls performed a ‘same-different’ letter decision task on reversible and non-reversible letters. Results showed that all participants required more time and committed more errors in discriminating reversible letters. In addition, worse execution was observed in the dyslexic group, which seems to indicate that this group is delayed in the acquisition of correct letter orientation. Therefore, our results indicated that overcoming reading errors in mirrors depends to some extent on the reading competence of the children and the ability to inhibit the process of generalization of mirrors.
Numerical reconstruction from the Fourier transform on the ball using prolate spheroidal wave functions
Authors: Isaev Mikhail , Novikov Roman G , Sabinin Grigory V 
Published: August 2022

Abstract
We implement numerically formulas of Isaev and Novikov (2022 J. Math. Pures Appl.
163 318–33) for finding a compactly supported function v on

R

d

, d ⩾ 1, from its Fourier transform

F

[

v

]

given within the ball B

r
. For the one-dimensional case, these formulas are based on the theory of prolate spheroidal wave functions, which arise, in particular, in the singular value decomposition of the aforementioned band-limited Fourier transform for d = 1. In multidimensions, these formulas also include inversion of the Radon transform. In particular, we give numerical examples of super-resolution, that is, recovering details beyond the diffraction limit.
Piezoelectric approaches for wearable continuous blood pressure monitoring: a review
Authors: Yi Zhiran , Zhang Wenming , Yang Bin 
Published: August 2022

Abstract
Portable and timely monitoring of blood pressure (BP) is critical for early prevention and daily control of hypertension. Despite tremendous efforts, achieving a wearable and continuous BP monitoring system remains a challenge. Of special attention is the piezoelectric approach with intrinsically good dynamic response characteristics and high fidelity through correlating arterial pulse waves with BP waves. However, the piezoelectric arterial pulse dynamic response is elusive. Here, we review state-of-the-art wearable BP measurements and arterial pulse wave monitoring using piezoelectric sensors. We then discuss the challenges and some possible solutions in wearable continuous BP monitoring. Finally, we propose a potential wearable BP monitoring strategy using arterial pulse piezoelectric dynamics.
The study of phase change properties of Sb70Se30 thin film with scandium and aluminum doping
Authors: Liu Ruirui , Xu Zhehao , Yuan Yukang , Xu Jiayue , Zhai Jiwei , Song Sannian , Song Zhitang 
Published: August 2022

Abstract
The scandium (Sc) and aluminum (Al) co-doped antimony-selenium (Sb45Se25Sc7Al23) thin film was fabricated and systematically investigated in this study. The results reveal that our examined Sb45Se25Sc7Al23 thin film has good thermal stability (the failure temperature for ten years data retention ∼103 °C) and the fast phase change speed (5 ns) at same time. Besides, the Sb45Se25Sc7Al23 thin film shows no multiple phase change, which derives from the fact that no formation of new Sc or Al related phases that are able to trigger multiple states in the thin film. However, it is found that more Sb precipitation is formed by the increase of dopants, which may increase the tendency of multiple phase change. All results suggest Sb45Se25Sc7Al23 thin film would be a good candidate used for phase change random access memory applications.
Direct observation of antiferromagnetic parity violation in the electronic structure of Mn2Au
Authors: Fedchenko O , Šmejkal L , Kallmayer M , Lytvynenko Ya , Medjanik K , Babenkov S , Vasilyev D , Kläui M , Demsar J , Schönhense G , Jourdan M , Sinova J , Elmers H J 
Published: August 2022

Abstract
Using momentum microscopy with sub-µm spatial resolution, allowing momentum resolved photoemission on individual antiferromagnetic domains, we observe an asymmetry in the electronic band structure,

E
(
k
)
≠
E
(
−
k
)

, in Mn2Au. This broken band structure parity originates from the combined time and parity symmetry,

P
T

, of the antiferromagnetic order of the Mn moments, in connection with spin–orbit coupling. The spin–orbit interaction couples the broken parity to the Néel order parameter direction. We demonstrate a novel tool to image the Néel vector direction, N, by combining spatially resolved momentum microscopy with ab-initio calculations that correlate the broken parity with the vector N.
Setting up regional diagnostic reference levels for pediatric interventional cardiology in Latin America and the Caribbean countries: preliminary results and identified challenges
Authors: Ubeda C , Vano E , Perez M D , Jímenez P , Ramirez R , Nader A , Miranda P , Azcurra P , Damsky J , Capdevila S , Oliveira M , Albuquerque J , Bocamino R , Schelin H , Yagui A , Aguirre D , Riquelme N , Cardenas L , Álvarez A , Mosquera W , Arias F , Gutierrez R , De la Mora R , Rivera T , Zapata J , Araujo P , Chiesa P 
Published: August 2022

Abstract
The goal of the present study was to propose a set of preliminary regional diagnostic reference levels (DRLs) for pediatric interventional cardiology (IC) procedures in Latin America and the Caribbean countries, classified by age and weight groups. The study was conducted in the framework of the Optimization of Protection in Pediatric Interventional Radiology in Latin America and the Caribbean program coordinated by the World Health Organization and the Pan American Health Organization in cooperation with the International Atomic Energy Agency. The first step of the program was focused on pediatric IC. Dose data from diagnostic and therapeutic procedures were collected between December 2020 and December 2021. Regional DRLs were set as the third quartile of patient dose data (kerma area product) collected in 18 hospitals from 10 countries in an initial sample of 968 procedures. DRLs were set for four age bands and five weight ranges. The values obtained for the four age bands (<1 yr, 1 to <5 yr, 5 to <10 yr and 10 to <16 yr) were 2.9, 6.1, 8.8 and 14.4 Gy cm2 for diagnostic procedures, and 4.0, 5.0, 10.0 and 38.1 Gy cm2 for therapeutic procedures, respectively. The values obtained for the five weight bands (<5 kg, 5 to <15 kg, 15 to <30 kg, 30 to <50 kg and 50 to <80 kg) were 3.0, 4.5, 8.1, 9.2 and 26.8 Gy cm2 for diagnostic procedures and 3.7, 4,3, 7.3, 16.1 and 53.4 Gy cm2 for therapeutic procedures, respectively. While initial data were collected manually as patient dose management systems (DMSs) were not available in most of the hospitals involved in the program, a centralized automatic DMS for the collection and management of patient dose indicators has now been introduced and is envisaged to increase the sample size. The possibility of alerting on high dose values and introducing corrective actions will help in optimization.
Multilayer map construction and vision-only multi-scale localization for intelligent vehicles in underground parking
Authors: Jiang Zhuoyi , Gao Xiang , Li Yicheng , Wang Hai , Zhang Yong , Fang Xiao 
Published: August 2022

Abstract
High-accuracy localization is a major problem for intelligent vehicles. With the continuation of traffic scenarios, underground parking lots have become an essential link to intelligent vehicle localization. Current localization methods suitable for ordinary traffic scenes, such as the global localization system and Beidou, cannot obtain stable localization results because the satellite signal is blocked. Thus, localization is a complex problem to solve in this scenario to achieve highly accurate localization. This study proposes a coarse-to-fine multi-scale localization method that can achieve highly precise localization with only one monocular camera based on the constructed multilayer map. First, the visual features of the images to be located are extracted, and the proposed features are counted and matched with the map using the bag of word model to obtain the nearest node for completing node-level coarse localization. Second, the perspective N-point problem model is formed using visual features and structural information in the nearest node. Finally, the positions and attitudes of the vehicles relative to the map node are calculated to complete degree-level fine localization. The error rate of the localization algorithm is verified to be below 7.3%, which is superior to that of other methods. This study provides a new solution for the highly accurate localization of underground parking and other indoor scenes.
Quantifying the computational capability of a nanomagnetic reservoir computing platform with emergent magnetisation dynamics
Authors: Vidamour I T , Ellis M O A , Griffin D , Venkat G , Swindells C , Dawidek R W S , Broomhall T J , Steinke N J , Cooper J F K , Maccherozzi F , Dhesi S S , Stepney S , Vasilaki E , Allwood D A , Hayward T J 
Published: August 2022

Abstract
Devices based on arrays of interconnected magnetic nano-rings with emergent magnetization dynamics have recently been proposed for use in reservoir computing applications, but for them to be computationally useful it must be possible to optimise their dynamical responses. Here, we use a phenomenological model to demonstrate that such reservoirs can be optimised for classification tasks by tuning hyperparameters that control the scaling and input-rate of data into the system using rotating magnetic fields. We use task-independent metrics to assess the rings’ computational capabilities at each set of these hyperparameters and show how these metrics correlate directly to performance in spoken and written digit recognition tasks. We then show that these metrics, and performance in tasks, can be further improved by expanding the reservoir’s output to include multiple, concurrent measures of the ring arrays’ magnetic states.
Operando photoelectron spectroscopy analysis of graphene field-effect transistors
Authors: Lu Yi-Ying , Yang Yu-Lun , Chuang Pin-Yi , Jhou Jie , Hsu Jui-Hung , Hsieh Shang-Hsien , Chen Chia-Hao 
Published: August 2022

Abstract
In this study, operando photoelectron spectroscopy was used to characterize the performance of graphene field-effect transistors under working conditions. By sweeping the back-gate voltages, the carrier concentration of the graphene channel on the 150 nm Si3N4/Si substrate was tuned. From the C1s core level spectra acquired under the application of different gate voltages, the binding energy shifts caused by electric-field effects were obtained and analyzed. Together with the C1s peak shape information and the photoluminescence spectrum of the Si3N4/Si substrate, the presence of local potential across the x-ray beam spot associated with defects and gate leakage current in amorphous Si3N4 was identified. The presence of defects in Si3N4/Si substrate could not only screen the partial electric field generated by the back gate but also serve as long-range scattering centers to the carriers, thus affecting charge transport in the graphene channel. Our findings will help further investigate the dielectric/graphene interface properties and accelerate the utilization of graphene in real device applications.
Measuring convective heat transfer in a room equipped with an air conditioner
Authors: Pebralia Jesi , Amri Iful , Rifa’i Ahmad Imam 
Published: August 2022

Abstract
This study has proposed a simple method to show the convective heat transfer. The object in this study is an air conditioner (AC) as a simple case of convection. In addition, AC is also easy to find in the class because most classrooms in Indonesia installed AC. Usually, a visualization needs special software (i.e. MatLab or others) and good programming skills. Therefore, in some cases, a lecturer would have difficulty enhancing the students’ understanding of the topic because it needs a simulation or visualization to explain it. Therefore, we present an alternative way to help the lecturer prepare materials for the learning process. The visualization was processed using Microsoft excel. So, it would be easy to operate and implement in the classroom. The result shows that the visualization convective heat transfer and the temperature change in the room seem to correspond to each other. The process AC does heat transfer is centred in a particular area as the coldest position. The lowest temperature is 20.90 °C with the decay constant 0.040, appropriate to the exponential decay in Newton’s law. Moreover, the decay constant (k) could not be used to predict the distance from the AC in temperature change.
Hands-on-experiments for additive colour mixing
Authors: Theilmann Florian 
Published: August 2022

Abstract
Ever since Newton’s groundbreaking work on the composed nature of light, additive colour mixing (and its laws) are subject to the interest of physicists as well as other sciences. In this paper, we present a setup for simple lab or home experiments on additive colour mixing and the laws of colour mixing. Students use the screen of a laptop or handheld device as (coloured) light source for respective experiments and can directly inspect the results of a superposition of different colours. With basic skills in designing presentation slides students can autonomously implement mixing experiments and explore the secrets which inspired Graßmann, Maxwell, and others.
Numerical simulation of AC losses in superconducting gravimeter
Authors: Huang Xing , Hu Xinning , Cui Chunyan , Wang Hao , Zhang Zili , Niu Feifei , Zhang Yuan , Wang Qiuliang 
Published: August 2022

Abstract
The annual drift of μGal level is an important indicator of superconducting gravimeters, which helps geophysicists to clarify the weak geophysical signals. In this paper, a finite element simulation model of the superconducting gravimeter sensor is developed based on the H formulation for evaluating the contribution of the excitation AC losses and the AC losses under operating conditions to the superconducting gravimeter’s drift. The model combines the H formulation and the heat transfer module of COMSOL Multiphysics software to calculate the AC losses of the superconducting gravimeter’s test mass and obtain the distribution images of the test mass’s temperature due to the AC losses-induced heating. The overall temperature rise of the test mass is obtained by assuming that it heats up uniformly and thus combines the temperature dependence factor (10 μGal mK−1) of the superconducting gravimeter to derive the instrument drift induced by AC losses. Then, the long-term drift due to excitation losses can reach 0.847 μGal yr−1, while the operating losses can be 0.45 μGal yr−1 or even less, according to the simulation. In addition, this paper discusses the effects of the parameters (index number, critical electric field, and critical current density) in the E–J power law introduced by the H formulation on the AC loss evaluation. It is concluded that the AC losses are sensitive to the critical current density, and increasing the test mass’s critical current density helps enhance the stability of the superconducting gravimeter.
Generation of terahertz radiation with fractional or integer OAMs from a fractional-order vortex two-color field
Authors: Wang Honggeng , Xu Shixiang , Chen Yue-Yue , Shen Baifei 
Published: August 2022

Abstract
This paper investigates the generation of the ultra-broadwidth (0.1–30 THz) terahertz (THz) radiation carrying fractional/integer orbital angular momentums (OAMs) via the interaction of the two-color (ω
0 and 2ω
0) laser field carrying initial fractional topological charges (TCs) with air in a moderate pump intensity regime (20 TW cm−2 < I
pump < 50 TW cm−2). The two four-wave mixing (FWM) processes (i.e., ω
0 + ω′0 − 2ω
0 → ω
THz and 2ω
0 − ω
0 − ω′0 → ω
THz) are responsible for THz generation. The two processes can produce two THz pulses. They interfere with each other and THz interference vortex beams are obtained. More importantly, the generation probability from the first FWM process grows while that of the second process declines in the positive frequency region over distance. This is largely due to the combined action of phase mismatch and the blue shift of the THz center frequency. For a longer distance, THz fractional vortex beams (FVBs)/integer vortex beams (IVBs) are produced by the dominant FWM process (ω
0 + ω′0 − 2ω
0 → ω
THz). Therefore, via employing different combinations of the initial TCs of the ω
0 and 2ω
0 pulses, one can manipulate the generation of the THz vortex beams with arbitrary fractional-order or integer-order TCs at some specific propagation distances. What is even more interesting is that, when employing half-integer TCs, THz FVBs with varying TC over distance can be produced, companied with birth and annihilation of the alternative vortex pair. This is principally due to diffraction-related effects and the unstable nature of the fractional vortex structures. This simple manipulation for THz waves carrying arbitrary fractional or integer TCs in this scheme encourages the applications for optically rotation, manipulation of molecular or cell assays and image edge enhancement in the field of biomedicine.
Modulation of electronic and magnetic properties of MoX2 (X = S and Se) monolayer via mono- and co-transition metal dopants: Spin density functional theory
Authors: Thajitr W , Busayaporn W , Rai D P , Sukkabot W 
Published: August 2022

Abstract
Using the spin density functional theory with Hubbard term (DFT + U) to account for exchange and correlation electronic effect, we study the electronic and magnetic properties of transition metal mono- and co-doped MoX2 (X = S and Se) monolayers. The electronic structures and magnetic properties of these monolayers are effectively modulated by the embedded transition metal atoms. The formation of the magnetism is caused by the double exchange mechanism, namely p-d and d-d hybridization. V, Cr and Co are the most energetically preferable substitutional dopants for these monolayers because of the lowest formation energies. Mn, Fe and Co doped-MoX2 (X = S and Se) and (Mo, Co, Co) Se2 monolayers are reflected as the half-metal behaviour with a perfect (100%) spin polarization at the Fermi level. Finally, the doped transition-metal dichalcogenide monolayers exhibiting the half metallic properties are hopefully proposed for the benefit of two-dimensional spintronic devices.
Dynamics of Rényi-2 correlations in optomechanics
Authors: Lakhfif Abderrahim , Hidki Abdelkader , El Qars Jamal , Nassik Mostafa 
Published: August 2022

AbstractWe report on temporal evolution of three different kinds of correlations present between two mechanical resonators of two distant Fabry-Pérot cavities. The two cavities are jointly fed by a two-mode squeezed light and driven by two independent coherent lasers. We consider the initial state of the two mechanical modes as a two-mode uncorrelated thermal state. After evaluating the dynamical covariance matrix elements, we give explicit expressions of the measures of correlations defined via the Rényi-2 entropy, namely, the Rényi-2 quantum mutual information, the Gaussian Rényi-2 entanglement and the Gaussian quantum steering. We find that by an appropriate choice of the system parameters, it is possible to generate entanglement and steering via a quantum correlations transfer from squeezed light to the mechanical bi-mode state. The influence of the squeezing parameter, the optomechanical cooperativity and the environmental thermal noise on the correlations are studied thoroughly. Additionally, we show in various circumstances that the considered temporal correlations respect the hierarchical relation established in L Lami, C Hirche, G Adesso, and A Winter, (2016Phys. Rev. Lett.117, 220 502).
Dancing in the dark: detecting a population of distant primordial black holes
Authors: Martinelli Matteo , Scarcella Francesca , Hogg Natalie B. , Kavanagh Bradley J. , Gaggero Daniele , Fleury Pierre 
Published: August 2022

AbstractPrimordial black holes (PBHs) are compact objects proposed to have formed in the early Universe from the collapse of small-scale over-densities. Their existence may be detected from the observation of gravitational waves (GWs) emitted by PBH mergers, if the signals can be distinguished from those produced by the merging of astrophysical black holes. In this work, we forecast the capability of the Einstein Telescope, a proposed third-generation GW observatory, to identify and measure the abundance of a subdominant population of distant PBHs, using the difference in the redshift evolution of the merger rate of the two populations as our discriminant. We carefully model the merger rates and generate realistic mock catalogues of the luminosity distances and errors that would be obtained from GW signals observed by the Einstein Telescope. We use two independent statistical methods to analyse the mock data, finding that, with our more powerful, likelihood-based method, PBH abundances as small asfPBH≈ 7 × 10-6(fPBH≈ 2×10-6) would be distinguishable fromfPBH= 0 at the level of 3σwith a one year (ten year) observing run of the Einstein Telescope. Our mock data generation code,darksirens, is fast, easily extendable and publicly available on GitLab.
Gravitational waves in scalar-tensor theory to one-and-a-half post-Newtonian order
Authors: Bernard Laura , Blanchet Luc , Trestini David 
Published: August 2022

Abstract
We compute the gravitational waves generated by compact binary systems in a class of massless scalar-tensor (ST) theories to the 1.5 post-Newtonian (1.5PN) order beyond the standard quadrupole radiation in general relativity (GR). Using and adapting to ST theories the multipolar-post-Minkowskian and post-Newtonian formalisms originally defined in GR, we obtain the tail and non-linear memory terms associated with the dipole radiation in ST theory. The multipole moments and GW flux of compact binaries are derived for general orbits including the new 1.5PN contribution, and comparison is made with previous results in the literature. In the case of quasi-circular orbits, we present ready-to-use templates for the data analysis of detectors, and for the first time the scalar GW modes for comparisons with numerical relativity results.
Neutrino mass and kinetic gravity braiding degeneracies
Authors: Garcia-Arroyo Gabriela , Cervantes-Cota Jorge L. , Nucamendi Ulises 
Published: August 2022

Abstract
Modified theories of gravity yield an effective dark energy in the background dynamics that achieves an accelerated expansion of the universe. In addition, they present a fifth force that induces gravitational signatures in structure formation, and therefore in the matter power spectrum and related statistics. On the other hand, massive neutrinos suppress the power spectrum at scales that also modified gravity enhances it, so a degeneration of these effects has been recognized for some gravity models. In the present work, we study both effects using kinetic gravity braiding (nKGB) models to find that in spite of some degeneracies, the role of the fifth force at very large scales imprints a bump in the matter power spectrum as a distinctive signature of this model and, therefore, acts as a smoking gun that seems difficult to match within the present knowledge of power spectra. These models result interesting, however, since the n = 1 presents no H
0 tension, and all nKGB studied here present no σ
8 tension and, in addition, a null neutrino mass is excluded.