bluuebunny/crossref_metadata_2025_split huggingface dataset:
Movement synchrony among dance performers predicts brain synchrony among dance spectators
Authors: Orgs Guido , Vicary Staci , Sperling Matthias , Richardson Daniel C. , Williams Adrian L. 
Published: September 2024

AbstractPerforming dance is an intrinsically social art form where at least one person moves while another person watches. Dancing in groups promotes social bonding, but how does group dance affect the people watching? A group of dancers and dance novices watched a 30 min dance video individually in an fMRI scanner. In a follow-up behavioural study, the same people watched the video again and provided continuous enjoyment ratings. Firstly, we computed cross-recurrence of continuous enjoyment ratings and inter-subject correlations (ISCs) in fMRI separately for both groups, and with the choreographer of the dance work. At both behavioural and neural levels, dancers responded more similarly to each other than novices. ISCs among dancers extended beyond brain areas involved in audio-visual integration and sensory areas of human movement perception into motor areas, suggesting greater sensorimotor familiarity with the observed dance movements in the expert group. Secondly, we show that dancers’ brain activations and continuous ratings are more similar to the choreographer’s ratings in keeping with sharing an aesthetic and artistic perspective when viewing the dance. Thirdly, we show that movement synchrony among performers is the best predictor of brain synchrony among both expert and novice spectators. This is consistent with the idea that changes in emergent movement synchrony are a key aesthetic feature of performing dance. Finally, ISCs across perceptual and motor brain areas were primarily driven by movement acceleration and synchrony, whereas ISCs in orbital and pre-frontal brain areas were overall weaker and better explained by the continuous enjoyment ratings of each group. Our findings provide strong evidence that the aesthetic appreciation of dance involves a common experience between dance spectators and the choreographer. Moreover, the similarity of brain activations and of enjoyment increases with shared knowledge of - and practice in - the artform that is being experienced, in this case contemporary performing dance.
UV-assisted fluctuation-enhanced gas sensing by ink-printed MoS2 devices
Authors: Drozdowska Katarzyna , Smulko Janusz , Czubek Jakub , Rumyantsev Sergey , Kwiatkowski Andrzej 
Published: September 2024

AbstractIn this work, MoS2 flakes were printed on ceramic substrates and investigated toward 1–10 ppm of nitrogen dioxide (NO2), 2–12 ppm of ammonia (NH3), and 2–12 ppm acetone (C3H6O) under UV light (275 nm). The structure of overlapping MoS2 flakes and UV light assistance affected high responsivity to NO2 when DC resistance was monitored, and superior sensitivity to NH3 was obtained from the low-frequency noise spectra. MoS2 exhibited response and recovery times in hundreds of seconds and stability throughout the experiments conducted within a few months. MoS2 sensor exhibited a resistance drift during the detection of a specific relaxation time. Subtracting the baseline burden with exponential drift exposed the direction of changes induced by oxidizing and reducing gases and reduced DL to 80 ppb, 130 ppb, and 360 ppb for NO2, NH3, and C3H6O, respectively. The fluctuation-enhanced sensing (FES) revealed that the adsorption of NO2 on MoS2 decreases the noise intensity, whereas adsorbed NH3 increases the fluctuations of current flowing through the sensor, and these changes are proportional to the concentration of gases. The noise responses for NO2 and NH3 were opposite and higher than DC resistance responses with subtracted baseline (an increase of 50% for 10 ppm of NO2 and an increase of more than 600% for 12 ppm of NH3), showing that FES is a highly sensitive tool to detect and distinguish between these two gases. This way, we introduce a simple and low-cost method of gas sensor fabrication using ink-printed MoS2 and the possibility of enhancing its sensitivity through data processing and the FES method.
Development of a one-pot synthesis of rGO in water by optimizing Tour’s method parameters
Authors: Rossi Andrea , Alladio Eugenio , Drobne Damjana , Hodoroaba Vasile-Dan , Jurkschat Kerstin , Kononenko Veno , Madbouly Loay Akmal , Mrkwitschka Paul , Novak Sara , Radnik Jörg , Saje Špela , Santalucia Rosangela , Sordello Fabrizio , Pellegrino Francesco 
Published: September 2024

AbstractSince its first synthesis in 2004, graphene has been widely studied and several different synthesis methods has been developed. Solvent exfoliation of graphite and the reduction of graphene oxide previously obtained through graphite oxidation are the most employed. In this work, we exploited synthesis conditions of a method usually employed for obtaining graphene oxide (the Tour’s method) for directly obtaining a very poorly oxidised material with characteristics like reduced graphene oxide. For the first time, a one-pot synthesis of reduced graphene oxide (rGO) is reported avoiding the use of a post-synthesis chemical or thermal reduction of the graphene oxide that requires further reagents, heat and time.
Role of physical activity and sedentary behavior in venous thromboembolism: a systematic review and dose-response meta-analysis
Authors: Wang Gangpu , Han Bo , Dai Guofeng , Lian Ying , Hart Melanie L , Rolauffs Bernd , Chen Huanan , Tang Chengbin , Wang Chengqiang 
Published: September 2024

AbstractIncreasing studies have investigated the link between physical activity (PA) and sedentary behavior with venous thromboembolism (VTE) but the existing findings are not consistent and the independent relationship is uncertain. This meta-analysis aimed to comprehensively assess the shape of dose-response relationship between PA and sedentary behavior with VTE and further explore whether the relationship is independent after mutual adjustment. We systematically searched PubMed, Embase and Web of Science from inception to August 1, 2024. PA exposures were converted into MET-h/wk. Categorical meta-analyses and a cubic spline model were performed to evaluate the association between PA, sedentary behavior and VTE. Twenty-five articles including 31 studies were included. A curvilinear dose-response relationship between PA and VTE was observed, with steeper gradients even at lower PA levels. After adjustment for sedentary behavior, higher level of PA was independently associated with a reduced VTE risk (OR = 0.83, 95%CI:0.77–0.89). Based on population attributable fraction analyses, 2.37% (95%CI: 1.90-2.85%) of incident VTE could have been prevented if all adults had achieved half the PA minimum recommended level. A linear dose-response relationship between sedentary behavior and VTE risk was found, and there was a 2% higher risk of VTE (OR = 1.02, 95%CI: 1.00-1.03) for 1 h increment of sedentary behavior per day. After adjustment for PA, sedentary behavior was independently associated with an increased VTE risk (OR = 1.19, 95CI%:1.01–1.39). Our analyses demonstrated PA and sedentary time were indeed independently associated with the risk of VTE after mutually adjusting for sedentary time or PA, highlighting a unique perspective on their individual contributions. Further studies assessing the effects of different combinations of PA and sedentary time for assessing joint effects on VTE are needed.
Effect of mechanical treatment from extrusion process on physicochemical properties of okara cellulose powder
Authors: Kantrong Hataichanok , Aussanasuwannakul Aunchalee , Rodkwan Natita , Chitisankul Wanida Tewaruth 
Published: September 2024

AbstractOkara is a by-product obtained from soybean milk containing high dietary fiber. This study focused on how to add value to okara by converting it into okara cellulose powder. The feasibility of using mechanical energy from the extrusion process to produce cellulose powder from okara was compared with the traditional mechanical method, hydrothermal and untreated okara powder (SBM). The extrusion process was carried out at different screw speeds (350–450 rpm), amount of water (0.5–1 L per hour), and number of treatment cycles. The physicochemical and functional properties of the okara cellulose powder and specific mechanical energy were analyzed. Results showed that the particle size of samples treated by 6 cycles of extrusion reduced to three times lower than SBM. The sample subjected to hydrothermal and extrusion showed significantly increased swelling ratio, water solubility index (WSI), and antioxidant capacity. However, only the extrusion treatment could improve the rheological properties. Increasing the cycles of extrusion treatment increased the swelling ratio and WSI values. Extrusion altered the color and chemical composition by decreasing the lightness and total dietary fiber. Extrusion treatment was proved to be an effective mechanical method for improving okara properties and converting the by-product into a potentially value-added ingredient for use in future food applications.
Complementary extended state observer‐based model‐free sliding mode control for a PMSM in cathode copper production
Authors: Gao Peng , Fang Liandi , Pan Huihui 
Published: September 2024

AbstractThis study introduces a model‐free sliding mode control scheme based on a complementary extended state observer (CESO) for a permanent magnet synchronous motor (PMSM) in cathode copper production. First, an ultra‐local model of the PMSM is proposed. Compared with the existing ultra‐local model, the ultra‐local model proposed in this study divides the disturbances into periodic and aperiodic perturbations. Furthermore, based on the proposed ultra‐local model, a CESO is proposed. Compared to the linear extended state observer (LESO) and the non‐linear extended state observer (NLESO), the proposed CESO combines the advantages of the LESO and the NLESO. The proposed CESO exhibits reduced disturbance estimation errors and greater resilience to significant periodic and minor aperiodic disturbances. By leveraging the ultra‐local model, a novel combined control strategy is devised, utilizing the CESO and a model‐free sliding mode control. The stability of the proposed control scheme has been verified through the Lyapunov stability theorem and the Hurwitz stability criterion. Subsequently, comparative simulations on disturbance rejection are conducted under periodic and aperiodic disturbances, illustrating the efficacy of the proposed control approach.
Active cogging torque construction by the weld slot design in a positioning servo system
Authors: Tong Minghao , Ding Yuhang , Sun Le 
Published: September 2024

AbstractThe cogging torque is usually considered as an adverse effect of the PM machine servo system. This paper presents a new perspective that the cogging torque can be exploited in many practical situations as long as the speed ripple can be suppressed. By the proposed cogging torque design scheme, the local core saturation on the stator yoke can be constructed by specially designing the yoke structure. With this idea, the cogging torque distribution can be designed, with the transmission ratio, generating a series of designated auxiliary positioning forces on the load side. This weak positioning force will be amplified by the reduction gears and make the terminal servo load prone to stop at the designated stable equilibrium positions. This feature can help humans conveniently move the load to some designated positions by manual mode with a certain precision. Considering the negative impact of this constructed cogging effect, a speed ripple suppression method is applied to guarantee that the cogging torque machine can provide a good servo performance. The designated cogging torque and performances are verified by prototype machines, testing, and motion control experiments.
An asymptotically unbiased 3D source localisation method based on frequencies and angles measurements
Authors: Zhao Chenggeng , Huang Heyue , Mao Xingpeng , Lang Junjie , Dou Xiuquan 
Published: September 2024

AbstractBased on frequency of arrival (FOA) and angle of arrival (AOA) measurements, the localisation of a moving source using a number of stationary stations is discussed. A closed‐form solution and bias reduction method using FOA and AOA measurements will be presented to quickly and accurately estimate target parameters, including location and velocity. The closed‐form solution is implemented using two‐stage weighted least squares, which constructs a pseudolinear equation by introducing auxiliary variables to perform linear estimation. In the process of linearisation, the authors utilise AOA measurements to simplify the FOA pseudolinear equation and reduce the number of auxiliary parameters. This means that fewer stations are needed to estimate the target parameters. However, the use of the computationally attractive pseudolinear formulation will introduce a non‐ignorable localisation bias if the measurements are not sufficiently accurate. To solve the above problem, a quadratic constraint on least squares minimisation is considered in the bias reduction method. Under moderate Gaussian noise, theoretical analysis and simulation results show that the root mean square error of proposed method can significantly reduce positioning deviation and asymptotically approach the Cramer–Rao Lower Bound. Keywords Radar, Radar detection, Doppler shift, Parameter estimation.
A cultural theory of expertise: styles of thought in attitudes, beliefs, and expectations regarding the COVID-19 pandemic
Authors: Pellegrini Pablo A. , Vilouta Rando Nicolás 
Published: September 2024

AbstractThis article aims to analyze attitudes towards the pandemic by finding correlations between them that can be used to identify different styles of thought. The research involved two surveys (with 5990 participants) conducted in Argentina during the period of isolation regulations. These surveys assessed people’s attitudes toward the pandemic, their beliefs, fears, and expectations. We can group the people surveyed into three styles of thought, represented by those who believe in a natural origin of the virus, those who believe it leaked by accident from a laboratory, and those who believe it was intentionally released, all three distributed equally among the Argentine population. An important finding of this work is how attitudes are articulated within each style of thought: each group has its own defined position regarding the inquired issues, that is, its own ideological matrix, a different opinion on vaccines, science, and the pandemic. We referred to these three styles of thought in relation to the pandemic as open-to-expertise, nihilist, and self-expertise-only. Articulating perspectives from anthropology and the sociology of knowledge, our analysis proposes a cultural theory of expertise as a model to analyze the different attitudes found in the public sphere regarding the pandemic and other debates. According to the cultural theory of expertise we propose, how people perceive expertise shapes their thoughts and influences their opinions about phenomena in which reliance on others’ knowledge is crucial.
A repetitive pulsed electrothermal plasma jet ignition system based on capillary discharge
Authors: Liu Tianxu , Cheng Runze , Wang Ruodan , Zhao Zheng , Wang Yanan , Sun Anbang 
Published: September 2024

Plasma ignition and combustion enhancement is a promising technology in applications of engines, industrial burners, pollutant emissions controls, etc. A new repetitive electrothermal plasma jet ignition system based on ablated capillary discharge under atmospheric pressure is presented in this paper. It consists of a capillary discharge module, a pulse current circuit, a pulse voltage circuit, a current release unit, an LC series resonant circuit, and a control system. The effects of the energy storage capacitor’s voltage and resistance in the current release unit on the electrical parameters are investigated. Increasing the capacitor voltage helps to shorten the discharge delay and increase the energy deposition efficiency in the main discharge process. The increase of the resistance in the current release unit leads to a longer discharge delay and higher energy deposition efficiency in the main discharge process. Balanced parameters between the delay of discharge in 66 µs and the energy deposition efficiency in 84% are achieved through optimization, with a peak radiative heat flux of 23 MW m−2 and a maximum jet length of 17 cm. Repetitive capillary discharge at 20 Hz under atmospheric pressure is achieved with the dispersion of energy storage capacitor charging voltage and energy deposition efficiency of 0.3% and 9.6%, respectively. Simplified circuit topology and control logic contribute to the miniaturization of the ignition system.
Microbial genes highlight different trends in short term for N cycling in historical alpine pastures
Authors: Raniolo Salvatore , Maretto Laura , Ramanzin Maurizio , Stevanato Piergiorgio , Concheri Giuseppe , Squartini Andrea , Sturaro Enrico 
Published: September 2024

Context Alpine pastures are seminatural grasslands which play a crucial role in biodiversity conservation, service provisioning, and mountain livestock systems. The soil microbial communities of pasture are fundamental in ecosystem nutrient cycles, but they are relatively underexplored in European Alpine pastures. Aims We explored the many soil microbial genes encoding key functions in the nitrogen cycle in three historical alpine pastures grazed by dairy cattle, considering different soils, temporal dynamics, and exclusion of cattle grazing for one summer. Methods 216 samples were collected across four sampling times. The abundance of genetic determinants involved in nitrogen fixation (nifH), nitrification (amoA bacterial and archaeal), and denitrification (nirK and nosZ) were quantified using real-time polymerase chain reaction. Key results The terminal denitrification nosZ gene was the most sensitive indicator and responded significantly to soil chemical composition and animal grazing. Sampling time affected nitrogen fixation nifH and intermediate denitrification nirK in relation to rainfall cumulation dynamics. The amoA nitrification genes showed high variability but no significant effects from the tested factors. Conclusions In spite of a general homeostatic trend occurring in these habitats and of the short term analysis, some genes acted as sensitive reporters of soil compositional differences, intraseasonal climatic variations, and grazing disturbance. Implications A stocking rate of >0.6 livestock units per hectare can be recommended, to combine animal production with conditions that favour complete denitrification, thus potentially reducing the nitrous oxide greenhouse gas emissions. Higher livestock grazing intensity can be withstood by the ecosystem without denitrification-related drawbacks when the preceding 10 days display a cumulated rainfall lower than 22 mm.
Effects of Thickness and Anisotropic Strain on Polarization Switching Properties of Sub-10nm Epitaxial Hf0.5Zr0.5O2 Thin Films
Authors: Liu 刘 Kuan 宽 , Liu 刘 Kai 楷 , Zhang 张 Xingchang 醒昌 , Fang 方 Jie 杰 , Jin 金 Feng 锋 , Wu 吴 Wenbin 文彬 , Ma 马 Chao 超 , Wang 王 Lingfei 凌飞 
Published: September 2024

Abstract
Doped HfO2-based ferroelectric (FE) films are emerging as leading contenders for next-generation FE non-volatile memories due to their excellent compatibility with complementary metal oxide semiconductor processes and robust ferroelectricity at nanoscale dimensions. Despite the considerable attention paid to the FE properties of HfO2-based films in recent years, enhancing their polarization switching speed remains a critical research challenge. We demonstrate the strong ferroelectricity of sub-10 nm Hf0.5Zr0.5O2 (HZO) thin films and show that the polarization switching speed of these thin films can be significantly affected by HZO thickness and anisotropically strained La0.67Sr0.33MO3-buffered layer. Our observations indicate that the HZO thin film thickness and anisotropically strained La0.67Sr0.33MO3 layer influence the nucleation of reverse domains by altering the phase composition of the HZO thin film, thereby reducing the polarization switching time. Although the increase in HZO thickness and anisotropic compressive strain hinder the formation of the FE phase, they can enable faster switching. Our findings suggest that FE HZO ultrathin films with polar orthorhombic structures have broad application prospects in microelectronic devices. These insights into novel methods for increasing polarization switching speed are poised to advance the development of high-performance FE devices.
Quantum-mechanical understanding on structure dependence of image potentials of single-walled boron nitride nanotubes
Authors: Zhang 张 Yu 煜 , Zhang 张 Zhiman 芷蔓 , Wang 王 Weiliang 伟良 , Zhang 张 Shaolin 绍林 , Huang 黄 Haiming 海鸣 
Published: September 2024

Abstract
The recent discovery of field emission devices based on one-dimensional nanostructures has attracted much interest in emerging applications on next-generation flat panel displays, molecule-based sensors, and so forth. To achieve a comprehensive understanding of surface potentials at the nano-emitters during the tunneling process, in this study we systematically investigated the image potentials of single-walled boron nitride nanotubes with different edges, diameters and lengths in the frame of a composite first-principles calculation. The image potentials of zigzag single-walled boron nitride nanotubes are found to be dependent on the non-equivalent sides. Only the image potentials of isolated armchair single-walled boron nitride nanotube can be well fitted with the image potential of an ideal metal sphere of a size comparable to the tube diameter. On the contrary, the image potentials of zigzag and grounded armchair single-walled boron nitride nanotubes exhibit a strong length-dependence characteristic and are significantly different from that of an ideal metal sphere, which originates from the significant axial symmetry breaking of induced charge at the tip for the long tube. The correlation between the testing electron and electronic structure of single-walled boron nitride nanotube has also been discussed.
A macro model of spin-transfer torque magnetic tunnel junction
Authors: Chen 陈 Ming-Bo 明博 , Li 李 Kun-Kun 琨琨 , Yang 杨 Xiao-Lei 晓蕾 , Peng 彭 Xue 雪 , Li 李 Wang-Da 旺达 , Liu 刘 En-Long 恩隆 , Wu 吴 Hui-Zhen 惠桢 , He 何 Shi-Kun 世坤 
Published: September 2024

Abstract
The precise compact modeling of magnetic devices is pivotal for the integrated design of spin-transfer torque magnetic tunnel junction (STT-MTJ) in conjunction with CMOS circuitry. This work presents a macro model for an STT-MTJ which is compatible with SPICE simulation platforms. The model accurately replicates the electrical performance of the MTJ, encompassing the resistance-voltage characteristics and the pulse-width-dependent state switching behavior, and is validated with various experimental data. Additionally, the impact of process variations, particularly those affecting the MTJ diameter and barrier thickness is investigated and summarized in a corner model. Monte Carlo simulations demonstrate that our adaptable and streamlined model can be efficiently incorporated into the design of integrated circuits.