bluuebunny/crossref_metadata_2025_split huggingface dataset:
Opera as Critical “Synthesis”: Theorizing the Interface between Cosmopolitanism and Orientalism
Authors: O’Connor Aeron 
Published: April 2023

AbstractFor centuries, European operas have portrayed dramatic, exotic Others on stage. However, as opera is increasingly adopted around the world, including by those “Eastern” Others it orientalized, its Othering tendencies serve new, more critical purposes. Post-colonial studies of knowledge and cultural production have shown how relations between centers and peripheries, knowledge and power are integral to forms of orientalism. In Tajikistan, the accounts of opera told today by the daughter of a successful Soviet Tajik composer bring to light the ambiguity of power relations and positionalities in Soviet opera’s production. Her accounts, beyond highlighting opera’s readily apparent orientalist tendencies, reveal surprising cosmopolitan aspirations in Soviet Central Asian opera. Cosmopolitan histories and values also feature heavily in post-colonial politics of knowledge production, but the concept appears worlds apart from, even in opposition to that of orientalism: the latter feeds off center-periphery, knowledge-power relations, while the former aspires to evade them. Through this present-day account of opera’s development in Soviet Tajikistan, this article challenges this opposition, theorizing a conceptual ambiguity and interdependence between orientalism and cosmopolitanism, which has important consequences for knowledge-producing fields like opera, as well as anthropology. Multiple forms of orientalism and cosmopolitanism overlapped and interacted in the development of Soviet Central Asian opera as numerous, intersecting meanings and socio-political agendas went into its production. Ultimately, a conceptual space emergesbetweenthe orientalism(s) and cosmopolitanism(s) at play. This ambiguous space in-between offers a lens for critically evaluating the complex, uneven practice of portraying and engaging with Others.
Information in Financial Contracts: Evidence from Securitization Agreements
Authors: Ambrose Brent W. , Han Yiqiang , Korgaonkar Sanket , Shen Lily 
Published: April 2023

AbstractWe introduce a novel application of machine learning to compare pooling and servicing agreements (PSAs) that govern commercial mortgage-backed securities. In contrast to the view that the PSA is largely boilerplate text, we document substantial variation across PSAs, both within- and across-underwriters and over time. A part of this variation is driven by differences in loan collateral across deals. Additionally, we find that differences in PSAs are correlated with ex post loan and bond performance. Collectively, our analysis suggests the importance of examining the entire governing document, rather than specific components, when analyzing complex financial securities.
Impact of Regulations on Firm Value: Evidence from the 2016 U.S. Presidential Election
Authors: Kundu Santanu 
Published: April 2023

AbstractUsing the 2016 U.S. presidential election result as a shock to the expectations about the future regulatory environment, I find that most regulated firms earned approximately 4% higher cumulative abnormal stock returns than least regulated firms during the first 10 trading days after the election. Exploring economic mechanisms, I find evidence consistent with the explanation that more regulations disproportionately harm high-growth firms and allow incumbent firms to extract rents through lower competition and political favoritism. Stock returns are also followed by a shift in firm fundamentals over 3 years after 2016, consistent with the economic mechanisms.
The antiquity of verb agreement in Trans-Himalayan (Sino-Tibetan)
Authors: DeLancey Scott 
Published: April 2023

AbstractThis paper reviews the evidence and arguments for reconstructing a person–number agreement paradigm for the Proto-Trans-Himalayan (=Sino-Tibetan) verb, and assesses the counter-arguments which have been presented in the literature. We demonstrate the cognacy of verb agreement paradigms across the family, and show that there is no plausible subclassification of the family which would place all the attesting languages in a single branch of the family, and no case for a “Rung” branch. The agreement systems of Jinghpaw and Northern Naga and the archaic postverbal paradigms of South Central/Kuki-Chin are demonstrably cognate to those of Rgyalrongic and Kiranti, and these languages have no common ancestor more recent than PTH.
Simulation of Venus Lightning‐I: Characterization of Free Radicals Generated in Venus Major Gas Mixture
Authors: Qu H. K. , Wang A. , Thimsen E. , Ling Z. C. 
Published: April 2023

AbstractA new Venus‐ESD‐Chamber (VEC) and peripheral systems were designed and built to simulate Venus lightning. It consists of three subsystems (a) electrostatic discharge (ESD) generation, (b) environmental pressure, temperature, gas composition control & monitoring, and (c) optical and non‐optical sensors. We conducted arc discharge experiments in air, in CO2, and in Venus major gas mixture (CO2‐N2, 96.5% ± 1.5%:3.5% ± 1.5%) under 10, 350, 700, and 1,000 mbar pressures, that correspond to the 50–75 km altitude range in the cloud layer of Venus. Plasma and Raman spectra, plus gas sensors, and GC‐MS were used to identify the ESD products and to semi‐quantify CO and O3 generated by ESD. We have found all species of free radicals that have been found in previous simulation studies using different discharge technologies, including some important species in CO2‐N2 system, nitrogen oxides and CN. In addition, we found three species (O3, N2+, and C2) that have not been previously reported. Our results suggest that electron flux and kinetic energy are the determining factors for the type of generated free radical species and gas pressure plays a less important role. We found that the quantity of CO changes with the type of ESD. The detection of O3 in this study suggests that lightning might be one of the sources of O3 observed in the Venusian atmosphere. OI emission line at 777.4 nm is the most prominent line in our plasma spectra of FD, consistent with the intense optical flash observed by the Lightning and Airglow Camera (LAC) on the Akatsuki mission.
Differential Controls of Greenhouse Gas (CO2, CH4, and N2O) Concentrations in Natural and Constructed Agricultural Waterbodies on the Northern Great Plains
Authors: Jensen Sydney A. , Webb Jackie R. , Simpson Gavin L. , Baulch Helen M. , Leavitt Peter R. , Finlay Kerri 
Published: April 2023

AbstractInland waters are hotspots of greenhouse gas (GHG) cycling, with small water bodies particularly active in the production and consumption of carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O). However, wetland ponds are being replaced rapidly by small constructed reservoirs in agricultural regions, yet it is unclear whether these two water body types exhibit similar physical, chemical, and environmental controls of GHG content and fluxes. Here, we compared the content and regulatory mechanisms of all three major GHGs in 20 pairs of natural wetland ponds and constructed reservoirs in Canada's largest agricultural region. Carbon dioxide content was associated primarily with metabolic indicators in both water body types; however, primary production was paramount in reservoirs, and heterotrophic metabolism a stronger correlate in wetland ponds. Methane concentrations were correlated positively with eutrophication of the reservoirs alone, while competitive inhibition by sulfur‐reducing bacteria may have limited CH4 in both waterbody types. Contrary to expectations, N2O was undersaturated in both water body types, with wetlands being a significantly stronger and more widespread N2O sink. Varying regulatory processes are attributed to differences in age, depth, morphology, and water‐column circulation between water body types. These results suggest that natural and constructed water bodies should be modeled separately in regional GHG budgets.
Directly Dating Plio‐Pleistocene Climate Change in the Terrestrial Record
Authors: Dröllner Maximilian , Barham Milo , Kirkland Christopher L. , Danišík Martin , Bourdet Julien , Schulz Maike , Aspandiar Mehrooz 
Published: April 2023

AbstractAccurate chronology of climatic shifts is critical to understand the controls on landscape and species evolution. Unfortunately, direct dating of continental climate change is hindered by the scarcity of dateable terrestrial products evidencing climatic shifts. Here we use ferruginous indurations from the arid landscapes of the Nullarbor Plain in southern Australia to constrain the timing of Plio‐Pleistocene aridification in the continental realm. We present (U‐Th)/He goethite data implying active induration processes between c. 2.7 and 2.4 Ma. Chemical‐mineralogical and petrographic examination suggests that formation of ferruginous indurations was linked with a decline of the groundwater table, driven by the rapid climatic shift from humid late Pliocene to arid early Pleistocene conditions. Combined with local to global climatic proxies, we conclude that ferruginous indurations are promising targets to obtain absolute ages on landscape evolution to refine continental climatic chronology and improve understanding of the environmental drivers of species diversification and extinction.
Reliability, acceptability, validity and responsiveness of the CHU9D and PedsQL in the measurement of quality of life in children and adolescents with overweight and obesity
Authors: Hayes Alison , Raghunandan Rakhee , Killedar Anagha , Smith Sarah , Cvejic Erin , Howell Martin , Petrou Stavros , Lancsar Emily , Wong Germaine , Craig Jonathan , Howard Kirsten 
Published: April 2023

Abstract
Background
The Paediatric Quality of life Inventory (PedsQLTM) Generic Core Scales and the Child Health Utilities 9 Dimensions (CHU9D) are two paediatric health-related quality of life (HRQoL) measures commonly used in overweight and obesity research. However, no studies have comprehensively established the psychometric properties of these instruments in the context of paediatric overweight and obesity. The aim of this study was to assess the reliability, acceptability, validity and responsiveness of the PedsQL and the CHU9D in the measurement of HRQoL among children and adolescents living with overweight and obesity.

Subjects/Methods
Subjects were 6544 child participants of the Longitudinal Study of Australian Children, with up to 3 repeated measures of PedsQL and CHU9D and aged between 10 and 17 years. Weight and height were measured objectively by trained operators, and weight status determined using World Health Organisation growth standards. We examined reliability, acceptability, known group and convergent validity and responsiveness, using recognised methods.

Results
Both PedsQL and CHU9D demonstrated good internal consistency reliability, and high acceptability. Neither instrument showed strong convergent validity, but PedsQL appears to be superior to the CHU9D in known groups validity and responsiveness. Compared with healthy weight, mean (95%CI) differences in PedsQL scores for children with obesity were: boys −5.6 (−6.2, −4.4); girls −6.7 (−8.1, −5.4) and differences in CHU9D utility were: boys −0.02 (−0.034, −0.006); girls −0.035 (−0.054, −0.015). Differences in scores for overweight compared with healthy weight were: PedsQL boys −2.2 (−3.0, −1.4) and girls −1.3 (−2.0, −0.6) and CHU9D boys: no significant difference; girls −0.014 (−0.026, −0.003).

Conclusion
PedsQL and CHU9D overall demonstrated good psychometric properties, supporting their use in measuring HRQoL in paediatric overweight and obesity. CHU9D had poorer responsiveness and did not discriminate between overweight and healthy weight in boys, which may limit its use in economic evaluation.
Spatial mapping of low pressure cluster jets using Rayleigh scattering
Authors: Patel Milaan , Geethika B. R. , Thomas Jinto , Joshi Hem 
Published: April 2023

AbstractIn this work, we report evolution of atomic clusters in a highly under-expanded supersonic jet of Argon. A high resolution and sensitive Rayleigh scattering based experimental set-up is designed to overcome the limitations encountered in conventional set-ups. Further, the measurement range could be extended from a few nozzle diameters to 50 nozzle diameters. Simultaneously, we had been able to generate 2D profiles of the distribution of clusters inside the jet. This paves the way to track the growth of clusters along the flow direction experimentally, which until now was limited to few nozzle diameters. The results show that spatial distribution of clusters inside the supersonic core deviates considerably from the prediction of the free expansion model. We exploit this to estimate cluster growth along the expansion direction. Further, it is observed that the growth of the clusters gets saturated after a certain distance from the nozzle. At the jet boundary, we see substantial cluster strengthening immediately upstream of barrel shock while the normal shock exhibits disintegration of clusters. These observations are noticed for the first time, which, we believe will further the understanding of cluster dynamics in a supersonic jet.
Classical conditioning of faciliatory paired-pulse TMS
Authors: Ewers Stefan P. , Dreier Timo M. , Al-Bas Siham , Schwenkreis Peter , Pleger Burkhard 
Published: April 2023

AbstractIn this proof-of-concept study, we questioned whether the influence of TMS on cortical excitability can be applied to classical conditioning. More specifically, we investigated whether the faciliatory influence of paired-pulse TMS on the excitability of the human motor cortex can be transferred to a simultaneously presented auditory stimulus through conditioning. During the conditioning phase, 75 healthy young participants received 170 faciliatory paired TMS pulses (1st pulse at 95% resting motor threshold, 2nd at 130%, interstimulus interval 12 ms), always presented simultaneously with one out of two acoustic stimuli. In the test phase, 20 min later, we pseudorandomly applied 100 single TMS pulses (at 130% MT), 50 paired with the conditioned tone—50 paired with a control tone. Using the Wilcoxon-Signed Rank test, we found significantly enhanced median amplitudes of motor evoked potentials (MEPs) paired with the conditioned tone as compared to the control tone, suggesting successful conditioning (p = 0.031, responder rate 55%, small effect size of r = − 0.248). The same comparison in only those participants with a paired-pulse amplitude < 2 mV in the conditioning phase, increased the responder rate to 61% (n = 38) and effect size to moderate (r = − 0.389). If we considered only those participants with a median paired-pulse amplitude < 1 mV, responder rate increased further to 79% (n = 14) and effect size to r = − 0.727 (i.e., large effect). These findings suggest increasingly stronger conditioning effects for smaller MEP amplitudes during paired-pulse TMS conditioning. These proof-of-concept findings extend the scope of classical conditioning to faciliatory paired-pulse TMS.
Volumetric thermo-convective casson fluid flow over a nonlinear inclined extended surface
Authors: Shuaib Muhammad , Anas Muhammad , Rehman Hijab ur , Khan Arshad , Khan Ilyas , Eldin Sayed M. 
Published: April 2023

AbstractThe thermophysical features of Casson fluid flow caused by a nonlinear permeable stretchable surface are assessed in the present study. The computational model of Casson fluid is used to define viscoelasticity, which is quantified rheologically in the momentum equation. Exothermic chemical reactions, heat absorption/generation, magnetic field and nonlinear volumetric thermal/mass expansion over the stretched surface are also considered. The proposed model equations are lessened by the similarity transformation to the dimensionless system of ODEs. The obtained set of differential equations are numerically computed through parametric continuation approach. The results are displayed and discussed via figures and tables. The outcomes of the proposed problem are compared to the existing literature and bvp4c package for the validity and accuracy purposes. It has been perceived that the energy and mass transition rate of Casson fluid increased with the flourishing trend of heat source parameter and chemical reaction respectively. Casson fluid velocity can be elevated by the rising effect of thermal, mass Grashof number and nonlinear thermal convection.
Genome-wide transcriptional profiling provides clues to molecular mechanisms underlying cold tolerance in chickpea
Authors: Akbari Alireza , Ismaili Ahmad , Amirbakhtiar Nazanin , Pouresmael Masoumeh , Shobbar Zahra-Sadat 
Published: April 2023

AbstractChickpea is an important food legume cultivated in several countries. A sudden drop in autumn temperature, freezing winter temperature, and late spring cold events result in significant losses in chickpea production. The current study used RNA sequencing of two cold tolerant (Saral) and sensitive (ILC533) Kabuli chickpea genotypes to identify cold tolerance-associated genes/pathways. A total of 200.85 million raw reads were acquired from the leaf samples by Illumina sequencing, and around 86% of the clean reads (199 million) were mapped to the chickpea reference genome. The results indicated that 3710 (1980 up- and 1730 down-regulated) and 3473 (1972 up- and 1501 down-regulated) genes were expressed differentially under cold stress in the tolerant and sensitive genotypes, respectively. According to the GO enrichment analysis of uniquely down-regulated genes under cold stress in ILC533, photosynthetic membrane, photosystem II, chloroplast part, and photosystem processes were enriched, revealing that the photosynthesis is severely sensitive to cold stress in this sensitive genotype. Many remarkable transcription factors (CaDREB1E, CaMYB4, CaNAC47, CaTCP4, and CaWRKY33), signaling/regulatory genes (CaCDPK4, CaPP2C6, CaMKK2, and CaHSFA3), and protective genes (CaCOR47, CaLEA3, and CaGST) were identified among the cold-responsive genes of the tolerant genotype. These findings would help improve cold tolerance across chickpea genotypes by molecular breeding or genetic engineering.
Full characterization of superradiant pulses generated from a free-electron laser oscillator
Authors: Zen Heishun , Hajima Ryoichi , Ohgaki Hideaki 
Published: April 2023

AbstractThe detailed structure of superradiant pulses generated from a free-electron laser (FEL) oscillator was experimentally revealed for the first time. Owing to the phase retrieval with a combination of linear and nonlinear autocorrelation measurements, we successfully reconstructed the temporal waveform of an FEL pulse including its phase variation. The waveform clearly exhibits the features of a superradiant pulse, the main pulse followed by a train of sub-pulses with π-phase jumps, reflecting the physics of light-matter resonant interaction. From numerical simulations, the train of sub-pulses was found to originate from repeated formation and deformation of microbunches accompanied with a temporal slippage of the electrons and light field, a process quite different from coherent many-body Rabi oscillations observed in superradiance from atomic systems.
Room-temperature fabrication of defective CoOxHy nanosheets with abundant oxygen vacancies and high porosity as efficient 5-hydroxymethylfurfural oxidation electrocatalysts
Authors: Zhong Ruyi , Wu Puwei , Wang Qi , Zhang Xiting , Du Lei , Liu Yunhua , Yang Huakang , Gu Meng , Zhang Z. Conrad , Huang Limin , Ye Siyu 
Published: April 2023

Defective cobalt oxide hydrate nanosheets with abundant oxygen vacancies and high porosity were fabricated via room-temperature reductive treatments, and they performed well in the electrocatalytic oxidation reaction of 5-hydroxymethylfurfural.
A refined anti‐disturbance control method for gimbal servo systems subject to multiple disturbances under constraints
Authors: Cui Yangyang , Yang Yongjian , Qiao Jianzhong , Bao Weimin 
Published: April 2023

AbstractThe performance of the gimbal servo system in control moment gyro (CMG), which includes precision, lifespan etc., is one of the crucial factors of spacecraft attitude control. The various practical disturbances, however, will not only deteriorate the velocity‐tracking accuracy but will also cause the abnormal gimbal velocity problem (especially peak phenomenon). To this end, this paper proposes a refined anti‐disturbance control method to deal with velocity output constraints and multiple disturbances. Starting with fully understanding the prior information of multiple disturbances, a refined disturbance observer with a low conservativeness is designed to accurately estimate disturbances. The disturbance‐estimation error is analyzed in detail to ensure convergence to a bounded region. Subsequently, a novel barrier Lyapunov function‐based backstepping controller is proposed that considers the residuals of disturbance estimation to simultaneously achieve multiple disturbances attenuation and compensation, and handle velocity output constraints. Notably, the gimbal's maximum velocity is precisely limited to a pre‐specified low range, which benefits the CMG's lifespan and performance. Finally, both simulation and experimental results show that the proposed method performs better in disturbance estimation, velocity tracking, and robustness.
Suppression strategy of coupled oscillation and power anti‐regulation of variable speed pumped storage unit with full size converter
Authors: Shi Huabo , Wang Yuhong , Chen Gang , Ding Lijie , Liao Jianquan 
Published: April 2023

AbstractThe ultra‐low frequency oscillation and poor speed regulation performance caused by the fast power control decrease the stability and efficiency of the variable speed pumped storage unit with a full size converter (FSC‐VSPSU). This paper presents a fast frequency control strategy to solve this problem. The small‐signal model of the FSC‐VSPSU in fast frequency mode is established, and the key parameters for the system stability are studied by the eigenvalue method. Aiming at the coupling oscillation mode caused by the governor and generator side converter (GSC), the corresponding control parameters optimisation method is proposed. In order to solve the power anti‐regulation problem, the strategy of combining rotor kinetic energy release, power slope adjustment, and delay acceleration control is proposed. PSCAD and RTDS simulation results show that the proposed strategy can effectively avoid the ultra‐low frequency oscillation caused by the fast power control and significantly improves the frequency and power control performance.
Optimised design of next‐generation multiplexing schemes for Global Navigation Satellite Systems
Authors: Nardin Andrea , Dovis Fabio , Perugia Simone , Cristodaro Calogero , Valle Vittorio 
Published: April 2023

AbstractMultilevel and multicarrier component signals are now common in many Global Navigation Satellite Systems challenging the employed multiplexing method that needs to be more flexible and powerful. In this work, the authors demonstrate how, by acting on two parameters of the digital baseband representation of component signals (the sampling frequency and the central frequency of the baseband complex envelope), it is possible to optimise the performance of the multiplexer, while still obtaining a composite signal that fulfils the required system constraints.