bluuebunny/crossref_metadata_2025_split huggingface dataset:
Overview of shared-bike repositioning optimization with artificial intelligence
Authors: Tu Wenwen , Xiao Feng 
Published: July 2023

Abstract
Rapid developments in artificial intelligence (AI) present unprecedented opportunities to enhance the operational and management performance of shared bikes. heuristic algorithms, supervised algorithms, unsupervised algorithms, and reinforcement learning (RL) in AI technologies enable the consideration of more possibilities in the bike repositioning problem (BRP), including addressing challenges such as large-scale bike sharing, real-time dynamic repositioning, and dynamic policy interaction with the environment. This paper provides an overview of research on bike-sharing repositioning utilizing AI techniques. The applications of Heuristic Search methods and Machine Learning, including RL for docked and dock-less shared bikes, are summarized based on dynamic and static environments, respectively. We provide a comprehensive analysis of the advanced development in AI-based BRP and review the application of AI technologies in obtaining scientifically repositioning strategies that effectively balance supply and demand conflicts. Moreover, this study delves into the constraints and potential advancements of AI methods for shared bike reallocation, offering valuable recommendations for future research.
Methods used to evaluate usability of mobile clinical decision support systems for healthcare emergencies: a systematic review and qualitative synthesis
Authors: Wohlgemut Jared M , Pisirir Erhan , Kyrimi Evangelia , Stoner Rebecca S , Marsh William , Perkins Zane B , Tai Nigel R M 
Published: July 2023

Abstract

Objective
The aim of this study was to determine the methods and metrics used to evaluate the usability of mobile application Clinical Decision Support Systems (CDSSs) used in healthcare emergencies. Secondary aims were to describe the characteristics and usability of evaluated CDSSs.

Materials and Methods
A systematic literature review was conducted using Pubmed/Medline, Embase, Scopus, and IEEE Xplore databases. Quantitative data were descriptively analyzed, and qualitative data were described and synthesized using inductive thematic analysis.

Results
Twenty-three studies were included in the analysis. The usability metrics most frequently evaluated were efficiency and usefulness, followed by user errors, satisfaction, learnability, effectiveness, and memorability. Methods used to assess usability included questionnaires in 20 (87%) studies, user trials in 17 (74%), interviews in 6 (26%), and heuristic evaluations in 3 (13%). Most CDSS inputs consisted of manual input (18, 78%) rather than automatic input (2, 9%). Most CDSS outputs comprised a recommendation (18, 78%), with a minority advising a specific treatment (6, 26%), or a score, risk level or likelihood of diagnosis (6, 26%). Interviews and heuristic evaluations identified more usability-related barriers and facilitators to adoption than did questionnaires and user testing studies.

Discussion
A wide range of metrics and methods are used to evaluate the usability of mobile CDSS in medical emergencies. Input of information into CDSS was predominantly manual, impeding usability. Studies employing both qualitative and quantitative methods to evaluate usability yielded more thorough results.

Conclusion
When planning CDSS projects, developers should consider multiple methods to comprehensively evaluate usability.
Quantitative Determination of Organophosphorus, Pyrethroid, and Dithiolane Pesticide Residues in Brown Rice Using Supercritical Fluid Extraction and Liquid Chromatography–Tandem Mass Spectrometry
Authors: Nakamura Keisuke , Otake Takamitsu , Hanari Nobuyasu 
Published: July 2023

Abstract

Background
Supercritical fluid extraction (SFE) is a fast, versatile, and solvent-efficient automatic extraction method. Despite its advantages, the results of our proficiency tests imply that the applicability assessments of SFE for pesticide residues were insufficient.

Objective
In this study, as analytical method using SFE was optimized and validated by testing the incurred and fortified brown rice samples with organophosphorus (OP), pyrethroid (PYR), and dithiolane (DIT) pesticides.

Method
A validation study using the incurred sample with etofenprox, fenitrothion, and isoprothiolane was performed by comparing the analytical results obtained using the SFE and solid-liquid extraction with homogenization (SLE), which is a well-validated official multi-residue extraction method. The tests on the fortified samples were also performed for seven pesticide residues, chlorpyrifos, diazinon, O-ethyl O-4-nitrophenyl phenylphosphonothioate (EPN), etofenprox, fenitrothion, isoxathion, and isoprothiolane, at three fortification levels, 0.001, 0.01, and 0.1 mg/kg.

Results
In the test on the incurred samples, optimized SFE-to-SLE analytical values (CSFE/CSLE) were 99.2–100.1%, with RSD lower than 3%. In contrast, the analytical-to-spiked concentrations in the tests on the fortified samples were 96.4–105.0%, with RSD lower than 8.8%.

Conclusions
These results indicate that the proposed SFE method, which is well validated with the incurred brown rice sample, is useful for determining OP, PYR, and DIT pesticide residues in brown rice.

Highlights
The proposed SFE method satisfies EU and Japanese maximum residue limits (MRLs). The consumption of solvent can be reduced to one-fourth of that of SLE using the proposed SFE method.
The Lady in the Overall: First World War Patriotism, Respectability, and Workwear of Upper-Class Munitionettes
Authors: Richardson Jenny 
Published: July 2023

Abstract
This article offers new insights into the national market for utilitarian garments worn by British upper-class Munitionettes in the pursuit of essential First World War munition manufacture. There has been a resurgence in recent years in the interest of women’s workwear, but little dress historical research has been undertaken into the manufacture and consumption of these garments by upper-class women, which this article seeks to address. The numbers of women involved in munition production peaked in 1917 at almost 1,000,000 meaning the circulation of workwear in this industry alone, was in the millions. Workwear worn by upper-class women represents discourses of wealth, femininity, respectability, and patriotism. That such expensive and high-quality garments exist speaks to the cultural significance the women themselves recognized in these utilitarian garments. This workwear symbolized their contribution to the war effort, the political ambitions for suffrage and personal achievement. These garments were not worn outside the workplace as the fabric would have been contaminated with chemicals, thus would not have been pleasant to preserve. Crucially, it is through the material cultural analysis of rare extant high-end garments worn by upper-class women, that the extent of the market for workwear has been revealed.
“They Perished in the Cause of Science”: Justus von Liebig’s Food for Infants
Authors: Lieffers Caroline 
Published: July 2023

Abstract:
In 1867, controversy erupted when Jean-Anne-Henri Depaul, a Paris accoucheur, tested Justus von Liebig’s new “food for infants” on four newborns, all of whom died within days. This paper examines the origins of Liebig’s food, the debates in the French Academy of Medicine after Depaul’s experiment, and how the events were discussed in the medical and popular presses. I argue that the controversy was shaped by a number of interconnected concerns, including the product’s impracticality, disagreements within the field of chemistry, the riskiness of Depaul’s experimentation, Liebig’s problematic celebrity, the potential hubris of trying to emulate a natural product, and national tensions between France and Germany. Infant feeding was an emotionally charged and highly politicized site where multiple interests, anxieties, and ways of knowing collided. Although commercial infant foods, many of which made reference to Liebig in their advertising, would ultimately find popularity in the last decades of the nineteenth century, close attention to the first years of Liebig’s product demonstrates that its credibility as a “scientific” mode of infant feeding was far from assured. Rather, Liebig’s milk illustrates the early challenges of constructing and enforcing knowledge and trust at the intersection between food, science, and infant life, in both professional and popular arenas.
Returning the Home State to the Global Anti-Corruption Campaign
Authors: Yan Yueming 
Published: July 2023

Abstract
International investment law is facing significant challenges in combating corruption in investment activities. The existing scholarly discussions are mostly centred upon the triangular relationship between the foreign investor, the host State and the investment arbitration tribunal. The role of another important body—the home State—has been under-examined, which seems to be better placed to implement measures to effectively govern investors’ (mis)conduct and ensure responsible investments. After identifying the low rate of substantiated corrupt acts in investment arbitration and the lack of a robust corruption prevention system in investment treaties, this article argues that participation of home States in arbitration proceedings can help mitigate those arduous evidentiary challenges and facilitate the fact-finding process. Home States should also impose obligations of delivering periodic corruption risk assessments on investors through domestic legislation and investment treaties.
Clockwise evolution in the hardness–intensity diagram of the black hole X-ray binary Swift J1910.2−0546
Authors: Saikia Payaswini , Russell David M , Pirbhoy Saarah F , Baglio M C , Bramich D M , Alabarta Kevin , Lewis Fraser , Charles Phil 
Published: July 2023

ABSTRACT
We present a detailed study of optical data from the 2012 outburst of the candidate black hole X-ray binary Swift J1910.2−0546 using the Faulkes Telescope and Las Cumbres Observatory (LCO). We analyse the peculiar spectral state changes of Swift J1910.2−0546 in different energy bands, and characterize how the optical and UV emission correlates with the unusual spectral state evolution. Using various diagnostic tools like the optical/X-ray correlation and spectral energy distributions, we disentangle the different emission processes contributing towards the optical flux of the system. When Swift J1910.2−0546 transitions to the pure hard state, we find significant optical brightening of the source along with a dramatic change in the optical colour due to the onset of a jet during the spectral state transition. For the rest of the spectral states, the optical/UV emission is mostly dominated by an X-ray irradiated disc. From our high cadence optical study, we have discovered a putative modulation. Assuming that this modulation arises from a superhump, we suggest Swift J1910.2−0546 to have an orbital period of 2.25–2.47 h, which would make it the shortest orbital period black hole X-ray binary known to date. Finally, from the state transition luminosity of the source, we find that the distance to the source is likely to be ∼4.5–20.8 kpc, which is also supported by the comparative position of the source in the global optical/X-ray correlation of a large sample of black hole and neutron star X-ray binaries.
Spectroscopic study of Herbig Ae/Be stars in the Galactic anti-centre region from LAMOST DR5
Authors: Nidhi S , Mathew Blesson , Shridharan B , Arun R , Anusha R , Kartha Sreeja S 
Published: July 2023

ABSTRACT
We study a sample of 119 Herbig Ae/Be stars in the Galactic anti-centre direction using the spectroscopic data from large sky area multi-object fiber spectroscopic telescope survey program. Emission lines of hydrogen belonging to the Balmer and Paschen series, and metallic lines of species such as Fe ii, O i, Ca ii triplet are identified. A moderate correlation is observed between the emission strengths of  Hα and Fe ii 5169 Å, suggesting a possible common emission region for Fe ii lines and one of the components of  Hα. We explored a technique for the extinction correction of the HAeBe stars using diffuse interstellar bands present in the spectrum. We estimated the stellar parameters such as age and mass of these HAeBe stars, which are found to be in the range 0.1–10 Myr and 1.5–10 M ⊙, respectively. We found that the mass accretion rate of the HAeBe stars in the Galactic anti-centre direction follows the relation $\dot{M}_{\mathrm{ acc}}$ ∝ $M_{*}^{3.12^{+0.21}_{-0.34}}$, which is similar to the relation derived for HAeBe stars in other regions of the Galaxy. The mass accretion rate of HAeBe stars is found to have a functional form of $\dot{M}_{\mathrm{ acc}} \propto t^{-1.1\, \pm\, 0.2}$ with age, in agreement with previous studies.
On the Tremaine–Weinberg method: how much can we trust gas tracers to measure pattern speeds?
Authors: Borodina Olga , Williams Thomas G , Sormani Mattia C , Meidt Sharon , Schinnerer Eva 
Published: July 2023

ABSTRACT
Pattern speeds are a fundamental parameter of the dynamical features (e.g. bars, spiral arms) of a galaxy, setting resonance locations. Pattern speeds are not directly observable, so the Tremaine–Weinberg (TW) method has become the most common method used to measure them in galaxies. However, it has not been tested properly whether this method can straightforwardly be applied to gas tracers, despite this being widely done in the literature. When applied to observations, the TW method may return invalid results, which are difficult to diagnose due to a lack of ground truth for comparison. Although some works applying the TW method to simulated galaxies exist, only stellar populations have been tested. Therefore, here we explore the applicability of the TW method for gas tracers, by applying it to hydrodynamical simulations of galaxies, where we know the true value of the bar pattern speed. We perform some simple tests to see if the TW method has a physically reasonable output. We add different kinds of uncertainties (e.g. in position angle or flux) to the data to mock observational errors based on the magnitude of uncertainty present in the observations. Secondly, we test the method on 3D simulations with chemical networks. We show that in general, applying TW to observations of gas will not recover the true pattern speed. These results have implications for many ‘pattern speeds’ reported in the literature, and based on these tests we also give some best practices for measuring pattern speeds using gas tracers going forwards.
Discovery of a radio jet in the Cloverleaf quasar at z = 2.56
Authors: Zhang Lei , Zhang Zhi-Yu , Nightingale James W , Zou Ze-Cheng , Cao Xiaoyue , Tsai Chao-Wei , Yang Chentao , Shi Yong , Wang Junzhi , Xu Dandan , Lin Ling-Rui , Zhou Jing , Li Ran 
Published: July 2023

ABSTRACT
The fast growth of supermassive black holes and their feedback to the host galaxies play an important role in regulating the evolution of galaxies, especially in the early Universe. However, due to cosmological dimming and the limited angular resolution of most observations, it is difficult to resolve the feedback from the active galactic nuclei (AGNs) to their host galaxies. Gravitational lensing, for its magnification, provides a powerful tool to spatially differentiate emission originating from AGN and host galaxy at high-redshifts. Here, we report a discovery of a jet-like radio structure in a strongly lensed starburst quasar, H1413+117 or Cloverleaf at redshift z = 2.56, based on observational data at optical, submillimetre, and radio wavelengths. With both parametric and non-parametric lens models and with reconstructed images in the source plane, we find a well-separated, kpc-scaled, single-sided radio jet located at projected ${\sim }1.2\, \mathrm{kpc}$ to the north-west of the host galaxy in the source plane. This could indicate the co-existence of feedback from the AGN by both wind and jet in the Cloverleaf quasar.
The incidence of AGN in galaxies with different stellar population ages
Authors: Ni Q , Aird J , Merloni A , Birchall K L , Buchner J , Salvato M , Yang G 
Published: July 2023

ABSTRACT
It has been argued that recycled gas from stellar mass loss in galaxies might serve as an important fuelling source for black holes (BHs) in their centres. Utilizing spectroscopic samples of galaxies from the Sloan Digital Sky Survey (SDSS) at z = 0–0.35 and the Large Early Galaxy Astrophysics Census (LEGA-C) survey at z = 0.6–1 that have X-ray coverage from XMM–Newton or Chandra, we test this stellar mass loss fuelling scenario by investigating how AGN activity and BH growth vary with the break strength at 4000 Å, $\rm D_{n}4000$ (which is closely related to the age of stellar populations), as younger galaxies are considered to have higher stellar mass loss rates. We found that when controlling for host-galaxy properties, the fraction of log LX/M⋆ &gt;32 (which roughly corresponds to Eddington ratios ≳ 1 per cent) AGN and sample-averaged black hole accretion rate ($\rm \overline{BHAR}$) decrease with $\rm D_{n}4000$ among $\rm D_{n}4000$ ≲ 1.9 galaxies, suggesting a higher level of AGN activity among younger galaxies, which supports the stellar mass loss fuelling scenario. For the oldest and most massive galaxies at z = 0–0.35, this decreasing trend is not present anymore. We found that, among these most massive galaxies at low redshift, the fraction of low specific-accretion-rate (31 &lt; log LX/M⋆ &lt; 32) AGNs increases with $\rm D_{n}4000$, which may be associated with additional fuelling from hot halo gas and/or enhanced accretion capability.
Far beyond the Sun − II. Probing the stellar magnetism of the young Sun
ι
Horologii from the photosphere to its corona
Authors: Amazo-Gómez E M , Alvarado-Gómez J D , Poppenhäger K , Hussain G A J , Wood B E , Drake J J , do Nascimento J-D , Anthony F , Sanz-Forcada J , Stelzer B , Del Sordo F , Damasso M , Redfield S , Donati J F , König P C , Hébrard G , Miles-Páez P A 
Published: July 2023

ABSTRACT
A comprehensive multiwavelength campaign has been carried out to probe stellar activity and variability in the young Sun-like star ι-Horologii. We present the results from long-term spectropolarimetric monitoring of the system by using the ultra-stable spectropolarimeter/velocimeter HARPS at the ESO 3.6-m telescope. Additionally, we included high-precision photometry from the NASA Transiting Exoplanet Survey Satellite (TESS) and observations in the far- and near-ultraviolet spectral regions using the STIS instrument on the NASA/ESA Hubble Space Telescope (HST). The high-quality data set allows a robust characterization of the star’s rotation period, as well as a probe of the variability using a range of spectroscopic and photometric activity proxies. By analysing the gradient of the power spectra (GPS) in the TESS light curves, we constrained the faculae-to-spot driver ratio ($\rm S_{fac}/S_{spot}$) to 0.510 ± 0.023, which indicates that the stellar surface is spot dominated during the time of the observations. We compared the photospheric activity properties derived from the GPS method with a magnetic field map of the star derived using Zeeman–Doppler imaging (ZDI) from simultaneous spectropolarimetric data for the first time. Different stellar activity proxies enable a more complete interpretation of the observed variability. For example, we observed enhanced emission in the HST transition line diagnostics C iv and C iii, suggesting a flaring event. From the analysis of TESS data acquired simultaneously with the HST data, we investigate the photometric variability at the precise moment that the emission increased and derive correlations between different observables, probing the star from its photosphere to its corona.
Gamma-ray emission from spectrally resolved cosmic rays in galaxies
Authors: Werhahn Maria , Girichidis Philipp , Pfrommer Christoph , Whittingham Joseph 
Published: July 2023

ABSTRACT
Cosmic rays (CRs) are ubiquitous in the interstellar medium (ISM) of nearby galaxies, but many of their properties are not well-constrained. Gamma-ray observations provide a powerful tool in this respect, allowing us to constrain both the interaction of CR protons with the ISM and their transport properties. To help better understand the link between observational signatures and CR physics, we use a series of magneto-hydrodynamical arepo simulations of isolated galaxies performed using spectrally resolved CR transport in every computational cell, with subsequent gamma-ray emission calculated using the Crayon + (Cosmic RAY emissiON) code. In each of our simulated haloes, modelling the energy-dependent spatial diffusion of CRs leads to a more extended distribution of high-energy (~100 GeV) gamma rays compared to that predicted by a ‘grey’ steady-state model, which is especially visible in the corresponding emission maps and radial profiles. Despite this, the total gamma-ray spectra can often be well approximated by the steady-state model, although recovering the same spectral index typically requires a minor variation of the energy dependence of the diffusion coefficient. Our simulations reproduce the observed shapes of the gamma-ray spectra of nearby star-forming galaxies and also match recent observations of the far infrared–gamma-ray relation. We find, however, that the spectrally resolved model yields marginally smaller luminosities for lower star formation rates compared to grey simulations of CRs. Our work highlights the importance of modelling spectrally resolved CR transport for an accurate prediction of spatially resolved high-energy gamma-ray emission, as will be probed by the upcoming Cherenkov Telescope Array observatory.
Results of the first nationwide cohort study of outcomes in dialysis and kidney transplant patients before and after vaccination for COVID-19
Authors: Wijkström Julia , Caldinelli Aurora , Bruchfeld Annette , Nowak Alexandra , Artborg Angelica , Stendahl Maria , Segelmark Mårten , Lindholm Bengt , Bellocco Rino , Rydell Helena , Evans Marie 
Published: July 2023

ABSTRACT

Background
Patients on kidney replacement therapy (KRT) have been identified as a vulnerable group during the coronavirus disease 2019 (COVID-19) pandemic. This study reports the outcomes of COVID-19 in KRT patients in Sweden, a country where patients on KRT were prioritized early in the vaccination campaign.

Methods
Patients on KRT between January 2019 and December 2021 in the Swedish Renal Registry were included. Data were linked to national healthcare registries. The primary outcome was monthly all-cause mortality over 3 years of follow-up. The secondary outcomes were monthly COVID-19-related deaths and hospitalizations. The results were compared with the general population using standardized mortality ratios. The difference in risk for COVID-19-related outcomes between dialysis and kidney transplant recipients (KTRs) was assessed in multivariable logistic regression models before and after vaccinations started.

Results
On 1 January 2020, there were 4097 patients on dialysis (median age 70 years) and 5905 KTRs (median age 58 years). Between March 2020 and February 2021, mean all-cause mortality rates increased by 10% (from 720 to 804 deaths) and 22% (from 158 to 206 deaths) in dialysis and KTRs, respectively, compared with the same period in 2019. After vaccinations started, all-cause mortality rates during the third wave (April 2021) returned to pre-COVID-19 mortality rates among dialysis patients, while mortality rates remained increased among transplant recipients. Dialysis patients had a higher risk for COVID-19 hospitalizations and death before vaccinations started {adjusted odds ratio [aOR] 2.1 [95% confidence interval (CI) 1.7–2.5]} but a lower risk after vaccination [aOR 0.5 (95% CI 0.4–0.7)] compared with KTRs.

Conclusions
The COVID-19 pandemic in Sweden resulted in increased mortality and hospitalization rates among KRT patients. After vaccinations started, a distinct reduction in hospitalization and mortality rates was observed among dialysis patients, but not in KTRs. Early and prioritized vaccinations of KRT patients in Sweden probably saved many lives.