bluuebunny/crossref_metadata_2025_split huggingface dataset:
Estimating the observation errors of FY-3C radio occultation dataset using the three-cornered hat method
Authors: Zhang Jiman , Xu Xiaohua , Luo Jia 
Published: November 2023

AbstractThis study uses the three-cornered hat (3CH) method to estimate the observation error variances (ErrVars) of FY-3C RO refractivity, temperature, and specific humidity for the first time. The FY-3C RO data was compared to the three reference datasets including radiosonde observations and NCEP and ERA-Interim reanalyses. The ErrVars of FY-3C RO data are estimated at 18 globally distributed radiosonde stations by using the three reference datasets and are compared to corresponding gridded ErrVars estimated using only the two model datasets as references. The two types of estimates show good correlations at different heights, while the gridded estimates are generally the smaller ones, which may be attributed to the neglection of error correlations among the datasets when applying the 3CH method. Due to the lack of radiosonde data in oceanic and polar regions, the global distributions of FY-3C RO observation errors are presented based on the estimated 5° × 5° gridded ErrVars. The global distribution of the FY-3C RO fractional error standard deviations (ErrSDs) demonstrates that the observation error varies greatly at different pressure levels and latitudes. Specifically, the refractivity ErrSDs at 200 hPa and 50 hPa are significantly higher around 30°N and 30°S than in other areas. The specific humidity ErrSDs generally increase as pressure levels decrease. In addition, statistics show that the fractional ErrSDs of refractivity are generally the lowest between 45° N–75° N and 45° S–75° S at all pressure levels, and land-sea differences exist in the fractional ErrSDs for all three types of RO data.
Ricci Bi-Conformal Vector Fields on Homogeneous Gödel-Type Spacetimes
Authors: Azami Shahroud , Jafari Mehdi 
Published: November 2023

AbstractIn this paper, we consider the homogeneous Gödel-type spacetimes and we completely classify the Ricci bi-conformal vector fields on these spaces. Also, we show that all Ricci bi-conformal vector fields on homogeneous Gödel-type spacetimes are Killing vector fields and Ricci collineation vector fields.
Exploring reproductive biology in Eucalyptus globulus clones under distinct climatic conditions
Authors: Anjos Andreia , Jesus Joana G. , Marques Cristina , Borralho Nuno , Valente Carlos , Araújo José Alexandre , Máguas Cristina , Correia Otília , Chozas Sergio 
Published: November 2023

AbstractDespite the great economic benefits, one of the major threats of introducing species into exotic ranges is their ability to regenerate and spread to novel environments. For example, Eucalyptus globulus plantations have been established in many parts of the world, using seedlings or clonal material, the latter often from advanced generation tree improvement programs. However, major concerns exist about this species’ ability to invade non-native areas. Therefore, it is necessary to study whether breeding programs affect this species’ reproductive biology to assess the risk of invasiveness of these improved trees. In this sense, this work compared the E. globulus phenological behaviour and reproductive structures production of three clonal and one seedling-based stand across two distinct climatic zones (mesic and xeric) in Portugal. Through binocular observation, four different stands (seedlings descending from open-pollinated crosses and three clonal-stands) were monitored every three weeks for different reproductive phenological stages, namely the presence of flowers and capsules. Clonal stands presented a shorter flowering season, less abundant reproductive structures, and higher phenological variability across sites than seedling-based stands. Phenological patterns and fructification abundance also varied between the three clonal stands. These results suggest that clones with decreased reproductive ability can be chosen during the breeding process, lowering the dispersal risk while enhancing productivity. Thus, understanding the phenological behaviour of E. globulus is critical to more sustainable agroforestry by reducing the spread risks.
Ethical power: a supplement to the trade union’s power resources approach
Authors: Uddin Mohammad Jalal 
Published: November 2023

AbstractIs the current Power Resources Approach (PRA) of trade unions capable enough to cope with the global socio-economic and geopolitical structural transformation resulting from automation, pandemic-induced economic fallout, and the Russia-Ukraine war? If so, then why are millions of workers living in extreme poverty, and why do we have a double-digit rate of global job gaps? To survive in this challenging period of the global labour market, trade unions have to trigger the fifth power’s resources, denoted as ‘ethical power’. This new dimension of PRA might facilitate the trade unions’ efforts to secure decent industrial relations and social justice in the workplace. Historically, gaining ‘institutional power’ and ‘societal power’ was subject to ethical confrontation, which is rightly omitted while defining the PRA. Therefore, this study coined the term ‘ethical power’ as a supplement to existing power resources theory and found that the application of ethics to the attainment and exercise of PRA is not something new but rather unrecognised.
Legal research and the public good: the current landscape
Authors: Conaghan Joanne 
Published: November 2023

AbstractThis paper is a revised version of a plenary lecture delivered at the SLS Annual Conference held at Oxford Brookes University in June 2023. It adopts an auto-ethnographic approach, drawing on the author's long experience of participating in the UK Research Excellence Framework (REF), to assess the current state of legal research in the UK and consider the implications of the increasing importance in the research landscape of engaging in research that serves the public good. The paper explores what falls within the scope of ‘legal research’, particularly for REF purposes, and reflects on how REF-focused research sits within the broader scope of legal scholarly activities. Ideas of the public good are examined and their relation to measures of research impact probed. The paper concludes by painting a broad-brush picture of the current research landscape, identifying key elements and engines of change, and speculating on the direction in which things are going and what should most concern legal scholars going forward. Although primarily focused on legal research in the UK, the paper should be of interest to legal scholars beyond the UK, particularly those in jurisdictions where research assessment exercises are a feature of academic life.
Late Quaternary glaciations in the Taniantaweng Mountains
Authors: Chai Le , Zhang Wei , Liu Liang , Li Yapeng , Tang Qianyu , Ma Ruifeng , Sun Bo , Qiao Jingru 
Published: November 2023

AbstractConstraining the timing and extent of Quaternary glaciations in the Tibetan Plateau (TP) is significant for the reconstruction of paleoclimatic environment and understanding the interrelationships among climate, tectonics, and glacial systems. We investigated the late Quaternary glacial history of the Qinggulong and Juequ valleys in the Taniantaweng Mountains, southeastern TP, using cosmogenic 10Be surface exposure dating. Four major glacial events were identified based on 26 10Be ages. The exposure ages of the oldest late Quaternary glaciation correspond to Marine Oxygen Isotope Stage (MIS) 6. The maximum glacial extent was dated to 48.5–41.1 ka (MIS 3), during the last glaciation, and was more advanced than that of the last glacial maximum (LGM). Geochronology and geomorphological evidence indicate that multiple glacial fluctuations occurred in the study area during the Early–Middle Holocene. These glacial fluctuations likely were driven by the North Atlantic climate oscillations, summer solar insolation variability, Asian summer monsoon intensity, and CO2 concentration.
Open access violence: Legacies of white supremacist data making at the Penn Museum, from the Morton Cranial Collection to the MOVE remains
Authors: Monteiro Lyra D. 
Published: November 2023

AbstractThis article examines how openly sharing data online can continue the dehumanizing work of 19th century “collectors” who stole the bodies of colonized peoples. It addresses the ongoing controversies at the University of Pennsylvania Museum of Archaeology and Anthropology (“Penn Museum“), regarding the interlinked weaponization of over one thousand crania used by racial scientist Samuel George Morton, and the remains of two Black children murdered by the police in the 1985 MOVE bombing, and asks, how can descendant communities regain their kin and take control of the data the museum has extracted from them? And how can scholars and other heritage workers within colonial institutions support them?
The mid-term outcomes of aortic root replacement after surgical repair for CHD
Authors: Furuta Akihisa , Shinkawa Takeshi , Yoshizawa Saeko , Okugi Satoshi , Niinami Hiroshi 
Published: November 2023

AbstractObjective:The purpose of this study is to assess the mid-term outcomes of aortic root replacement after repair of CHDs.Method:This is a single-institutional retrospective, cohort study with consecutive patients undergoing aortic root replacement after surgical repair of CHDs between 1999 and 2022. Operative indications included aortic root dilatation with/without aortic insufficiency, sinus of Valsalva rupture, or aortic dissection involving the root.Results:Forty-four patients (36 male and 8 female) were enrolled. Mean age at the root replacement was 36.6 ± 11.9 years. The most frequent primary diagnosis was congenital aortic stenosis (n = 10) and ventricular septal defect (n = 10). Mean time from the surgical repair to aortic root replacement was 26.6 ± 13.0 years. Operative indications were aortic root enlargement with or without aortic valve aetiology (n = 40), sinus of Valsalva rupture (n = 2), and aortic dissection (n = 2). Forty-two patients underwent valve-replacing aortic root replacement, and two patients underwent valve-sparing, with 40 concomitant procedures. The median follow-up was 3.5 (1.3–7.6) years. There were one early and five late mortalities and five cardiovascular-related reoperations. Actuarial survival at 5–10 years after root replacement was 81.0 ± 6.6%. The cumulative incidence of cardiovascular-related reoperation and aortic root or valve-related reoperation at 5 years after root replacement was 11.9% and 5.6%, respectively.Conclusion:The early and mid-term outcomes of aortic root replacement for patients with a history of repair of CHDs were favourable in terms of survival and aortic root or valve-related reoperation.
Globalization and Empire: Market Integration and International Trade among Canada, the US, and Britain, 1750–1870
Authors: Pedersen Maja Uhre , Geloso Vincent , Sharp Paul 
Published: November 2023

AbstractWheat market integration between the US and the UK before the “first era of globalization” (in the second half of the nineteenth century) was frequently interrupted by policy and “exogenous” events such as wars. This paper adds Canada to this story by looking at trade and price data, as well as contemporary debates. This allows us to triangulate the role of policy and wars, since Canada as a small open economy was part of the British Empire. We find that, despite its privileged access to British markets, Canada faced similar barriers to the US, suggesting that membership of the British Empire provided only a modest benefit to trade. We also describe the limitations she faced accessing the US market, in particular after American independence.
Structure and Variability of the Jan Mayen Current in the Greenland Sea Gyre From a Yearlong Mooring Array
Authors: Pellichero V. , Lique C. , Kolodziejczyk N. , Balem K. 
Published: November 2023

AbstractThe Jan Mayen Channel is located North of the Jan Mayen Island in the Nordic Seas, and is an important gateway for the exchanges of volume, heat and freshwater between the Greenland and the Norwegian basins via the Jan Mayen Current. Based on observations from moored instruments deployed on the shelf and the continental slope of the Jan Mayen Island from August 2017 to August 2018, we document the mean state and the variability of the currents, temperature and salinity and their associated vertical structure. We found that the main feature of circulation is an intense and permanent south‐eastward jet‐like current centered at 150 m depth, located on the 400 m depth slope, with a maximum mean magnitude of 7 cm·s−1. While the velocities recorded on the shelf are largely constant in speed and direction, without any strong seasonal cycle, the moorings located offshore are capturing larger anomalies on short time scales that are likely the signature of eddies passing across the mooring array. Overall, the variability of the transport across the section is correlated with the large‐scale wind pattern over the Nordic Seas, highlighting that the Jan Mayen Current is part of a complex system of currents that operates at larger scale in the region.
Shear‐Enhanced Electrical Conductivity of Synthetic Quartz‐Graphite Gouges: Implications for Electromagnetic Observations in Carbonaceous Shear Zones
Authors: Chen Jinyu , Chen Jianye , Yao Lu , Ma Xi 
Published: November 2023

AbstractGraphite is considered as a material that promotes fault weakening and electrical conductivity (σ) enhancement at fault zones. We studied how shear deformation may affect the evolution of friction and electrical conductivity of synthetic quartz (Qz)‐graphite (Gr) mixtures and, more importantly, whether the σ of the mixtures present visible changes at the beginning of the simulated fault slip. Long‐displacement friction experiments were performed on 1.2–2.3 mm‐thick gouge specimens of varied Gr volume fraction (XGr = 0–100 vol.%) under identical normal stress (2 or 5 MPa), slip rate (∼1.0 mm/s), and N2‐flushing conditions. The experimental results suggested that the σ of the specimens with ≥4.6 vol.% XGr abruptly increased under limited shear displacement. With continued shear, the steady‐state electrical conductivity (σss) increased by more than seven orders of magnitude when XGr > 3.4 vol.%, while the steady‐state frictional coefficient remained high (0.54–0.80) except for the specimens with XGr > 13.6 vol.%. The post‐mortem microstructures revealed that the high σss observed in the intermediate Gr content specimens (3.4–13.6 vol.%) is associated with an ad‐hoc fabric (graphite–cortex clasts) present in the principal slip zone. For high Gr content, excess Gr flakes fill the pores and help develop mechanically lubricated surfaces. We propose that low Gr content (i.e., as low as 3.4 vol.%) can cause high conductivity anomalies in natural shear zones. Overall, the findings suggest that the initiation of slips within carbonaceous shear zones can be detected by identifying unusual temporal signals using electromagnetic stations.
Importance of Seasonally Evolving Near‐Surface Salinity Stratification on Mixed Layer Heat Budget During Summer Monsoon Intraseasonal Oscillation in the Northern Bay of Bengal in 2019
Authors: Sherin V. R. , Girishkumar M. S. , Shivaprasad S. , Sureshkumar N. , Farrar J. T. , Athulya K. , Ashin K. , Rama Rao E. Pattabhi , Sengupta D. , Venkatesan R. , Ravichandran M. 
Published: November 2023

AbstractThe discharge of freshwater from major rivers into the northern Bay of Bengal (BoB) increases dramatically during the summer monsoon season, reaching a peak in August–September, and there is a corresponding increase in the vertical salinity gradient in the upper ocean. Here we study the impact of seasonally evolving near‐surface salinity stratification on the response of ocean mixed layer temperature (MLT) to Summer Monsoon Intraseasonal Oscillations (MISO), using accurate surface fluxes and high vertical resolution (∼2 m) hydrographic measurements from a mooring in the northern BoB (17.8°N, 89.5°E) during June–September 2019. Prominent MLT warming and cooling with a range of 1.5°C is observed between suppressed (clear skies, calm winds) and active (cloudy, windy) phases of MISO convection. However, the intraseasonal MLT response to the active phase of a late‐season MISO event is minimal compared to MISO events in early summer. We infer this is primarily due to the much smaller contribution from oceanic vertical processes (∼6 Wm−2) in late summer 2019, compared to their role in early summer (−15 to −55 Wm−2). During the active phase of the MISO event of late summer 2019, the combined effect of reduced entrainment and weak vertical temperature gradients associated with a barrier layer inhibits near‐surface cooling. Conversely, the near‐surface salinity stratification and the barrier layer are weak during MISO events in the early summer of 2019—these hydrographic conditions lead to enhanced MLT cooling in response to MISO, apparently through a freer turbulent exchange of cool thermocline water with the surface layer.
Divergent Response of Carbon Sink to Climate Change Along Topographical Gradient in China Based on EEMD Detrending
Authors: Kong Y. , Zhang M. , Gong H. , Jiao F. , Xue P. , Wang K. , Liu H. 
Published: November 2023

AbstractNet ecosystem productivity (NEP) is important in the carbon cycle. However, the divergent responses of NEP to climate change along topographical gradient, particularly slope, and aspect, is not yet well understood. This study investigates divergent response of NEP to climate change during 1981–2018 along topographical gradient by Ensemble Empirical Mode Decomposition and multiple regression. The results indicate that: (a) NEP increases at low elevations, but first decreases and then increases at mid‐high elevations, and decreases at high elevations. NEP increases with slope. NEP is higher in the east and west but lower in the north and south. (b) With elevation increasing, negative correlation of temperature (TEM) and vapor pressure deficit (VPD), along with the positive correlation of precipitation (PRE) and Solar radiation (SR) strengthens first and then weaken, but PRE's positive correlation strengthens again after 4,000 m, and TEM's negative correlation changes to positive at high elevations. Moreover, soil moisture (SM's) positive correlation strengthens overall. NEP changes are dominated by PRE and VPD below 2,000 m, by TEM and PRE at 2,000–4,000 m, and by PRE and SM above 4,000 m. (c) With slope increasing, the negative correlation of TEM and the positive correlation of SM and SR and their importance strengthen. While PRE's positive correlation and VPD's negative correlation, and their importance weaken. (d) NEP changes are controlled by PRE and VPD in all respect, but the positive relationship of PRE and its importance weakens from north to west, opposite to VPD. Our results highlight the importance of topography for deeply understanding NEP's response to climate changes.
Estimating Fine‐Scale Transpiration From UAV‐Derived Thermal Imagery and Atmospheric Profiles
Authors: Morgan Bryn E. , Caylor Kelly K. 
Published: November 2023

AbstractAccurate and timely observations of individual‐scale transpiration are critical for predicting ecosystem responses to climate change. Existing remote sensing methods for measuring transpiration lack the spatial resolution needed to resolve individual plants, and their sources of uncertainty are not well‐constrained. We present two novel approaches for independently quantifying fine‐scale transpiration using thermal imagery and a suite of environmental sensors mounted on an unmanned aerial vehicle (UAV) platform. The first is a surface energy balance (SEB) approach designed for fine‐scale thermal imagery; the second uses profiles of air temperature (Ta) and humidity (hr) to calculate transpiration from the Bowen Ratio. Both approaches derive the energy equivalent of transpiration, latent heat flux (λE), solely using data acquired from the UAV. We compare the two approaches and their sources of uncertainty using data from several flights at a grassland eddy covariance site in 2021 and 2022 and using typical diurnal conditions to evaluate the uncertainty of λE estimates for each approach. The SEB approach generated independent, UAV‐based estimates of λE within ∼20% of eddy covariance measurements and was most sensitive to surface temperature and resistance to heat transfer. λE calculated from the Bowen Ratio approach was ∼30% higher than tower values due to inaccuracies in Ta and hr, the main sources of uncertainty in this approach. The Bowen Ratio approach has a lower overall potential uncertainty, indicating its potential for improvement over the SEB approach. Our results are the first physically‐based observations of transpiration derived solely from a UAV platform, with no ancillary data inputs.
Task-adaptive physical reservoir computing
Authors: Lee Oscar , Wei Tianyi , Stenning Kilian D. , Gartside Jack C. , Prestwood Dan , Seki Shinichiro , Aqeel Aisha , Karube Kosuke , Kanazawa Naoya , Taguchi Yasujiro , Back Christian , Tokura Yoshinori , Branford Will R. , Kurebayashi Hidekazu 
Published: November 2023

AbstractReservoir computing is a neuromorphic architecture that may offer viable solutions to the growing energy costs of machine learning. In software-based machine learning, computing performance can be readily reconfigured to suit different computational tasks by tuning hyperparameters. This critical functionality is missing in ‘physical’ reservoir computing schemes that exploit nonlinear and history-dependent responses of physical systems for data processing. Here we overcome this issue with a ‘task-adaptive’ approach to physical reservoir computing. By leveraging a thermodynamical phase space to reconfigure key reservoir properties, we optimize computational performance across a diverse task set. We use the spin-wave spectra of the chiral magnet Cu2OSeO3 that hosts skyrmion, conical and helical magnetic phases, providing on-demand access to different computational reservoir responses. The task-adaptive approach is applicable to a wide variety of physical systems, which we show in other chiral magnets via above (and near) room-temperature demonstrations in Co8.5Zn8.5Mn3 (and FeGe).
Electrospun membrane of bismuth vanadate-polyvinylidene fluoride nanofibers for efficient piezo-photocatalysis applications
Authors: Porwal Chirag , Verma Sahil , Kumar Manish , Gaur Akshay , Chauhan Vishal Singh , Vaish Rahul , Kebaili Imen , Boukhris Imed , Park Hyeong Kwang Benno , Joo Yun Hwan , Sung Tae Hyun , Kumar Anuruddh 
Published: November 2023

AbstractThe fabrication of a Poly (vinylidene fluoride) membrane (PVDF) and ceramic-assisted bismuth vanadate-polyvinylidene fluoride (BiVO4-PVDF) composite membrane was achieved through the utilization of the electrospinning technique. The composition and structure of the fabricated membranes were characterized by X-ray powder diffraction, Raman analysis, scanning electron microscopy, Thermo gravimetric analyzer, Fourier transform infrared spectroscopy, and UV–Vis spectroscopy techniques. The prepared polymeric membranes were then utilized for catalytic investigation and to explore, how structure affects catalytic activity using 5 mg/L, 10 mL methylene blue (MB) dye solution. Ultrasonication, visible light irradiation, and the combination were used to study piezocatalysis, photocatalysis, and piezo-photocatalysis, moreover, degradation intermediates were also explored using scavengers. Electrospun BiVO4-PVDF (BV-PVDF) composite has been found to have better piezocatalytic and photocatalytic properties than PVDF. The experimental findings reveal that the composite of BiVO4-PVDF demonstrates the highest efficiency in dye degradation, achieving a maximum degradation rate of 61% within a processing time of 180 min. The rate of degradation was calculated to be 0.0047 min−1, indicating a promising potential for the composite in the field of dye degradation.