bluuebunny/crossref_metadata_2025_split huggingface dataset:
Remarkable insights into modern bird origins from the Maastrichtian type area (north-east Belgium, south-east Netherlands)
Authors: Field Daniel J. , Benito Juan , Werning Sarah , Chen Albert , Kuo Pei-Chen , Crane Abi , Widrig Klara E. , Ksepka Daniel T. , Jagt John W.M. 
Published: May 2024

Abstract
For centuries, fossils from the Maastrichtian type locality and adjacent quarries have provided key evidence of vertebrate diversity during the latest Cretaceous, yet until recently the Maastrichtian type area had revealed no important insights into the evolutionary history of birds, one of the world’s most conspicuous groups of extant tetrapods. With the benefit of high-resolution micro-CT scanning, two important avian fossils from the Maastrichtian type area have now been examined in detail, offering profound, complementary insights into the evolutionary history of birds. The holotype specimens of these new taxa, Janavis finalidens Benito, Kuo, Widrig, Jagt and Field, 2022, and Asteriornis maastrichtensis Field, Benito, Chen, Jagt and Ksepka, 2020, were originally collected in the late 1990s, but were only investigated in detail more than twenty years later. Collectively, Janavis and Asteriornis provide some of the best evidence worldwide regarding the factors that influenced stem bird extinction and crown bird survivorship through the Cretaceous-Palaeogene transition, as well as insights into the origins of key anatomical features of birds such as an extensively pneumatised postcranial skeleton, a kinetic palate, and a toothless beak. Asteriornis also provides scarce evidence of a Cretaceous-aged divergence time calibration within the avian crown group, while together, Janavis and Asteriornis constitute the only documented co-occurrence of crown birds and non-neornithine avialans. Here, we review key insights into avian evolutionary history provided by these discoveries from the Maastrichtian stratotype, document undescribed and newly discovered Maastrichtian fossils potentially attributable to Avialae and provide the first histological data for the holotype of Asteriornis, illustrating its skeletal maturity at the time of its death.
On bursty star formation during cosmological reionisation – how does it influence the baryon mass content of dark matter halos?
Authors: Menon Anand , Power Chris 
Published: May 2024

Abstract
The baryon mass content (i.e. stellar and gas mass) of dark matter halos in the early Universe depends on both global factors – for example, ionising ultraviolet (UV) radiation background – and local factors – for example, star formation efficiency and assembly history. We use a lightweight semi-analytical model to investigate how both local and global factors impact the halo baryon mass content at redshifts of

$z\geq 5$

. Our model incorporates a time delay between when stars form and when they produce feedback of

$0\leq t^d/\mathrm{Myr} \leq 30$

, which can drive bursts of star formation, and a mass and redshift-dependent UV background, which captures the influence of cosmological reionisation on gas accretion onto halos. We use statistically representative halo assembly histories and assume that the cosmological gas accretion rate is proportional to the halo mass accretion rate. Delayed (

$t^d$

>0) feedback leads to oscillations in gas mass with cosmic time, behaviour that cannot be captured with instantaneous feedback (

$t^d$

=0). Highly efficient star formation drives stronger oscillations, while strong feedback impacts when oscillations occur; in contrast, inefficient star formation and weak feedback produce similar long-term behaviour to that observed in instantaneous feedback models. If the delayed feedback timescale is too long, a halo retains its gas reservoir but the feedback suppresses star formation. Our model predicts that lower mass systems (halo masses

$m_\mathrm{h} \leq 10^7 \mathrm{M}_\odot$

) at

$z \leq 10$

should be strongly gas deficient (

$m_\mathrm{g}\rightarrow 0$

), whereas higher mass systems retain their gas reservoirs because they are sufficiently massive to continue accreting gas through cosmological reionisation. Interestingly, in higher mass halos, the median

$m_\star/(m_\star+m_\mathrm{g}) \simeq 0.01-0.05$

, but is a factor of 3–5 smaller when feedback is delayed. Our model does not include seed supermassive black hole feedback, which is necessary to explain massive quenched galaxies in the early Universe.
Subjective and objective corruption of intuition and rational choice
Authors: Haig David 
Published: May 2024

Abstract
A societal shift has occurred toward making impactful decisions on the basis of objective metrics rather than subjective impressions. This shift is commonly justified by claims that we should not trust subjective intuitions. These are often unjust and thereby corrupt. However, the proxies used to make objective decisions are subject to a different form of corruption, characterized as proxy failure.
Proxy failure in social policies as one of the main causes of persistent sexism and racism
Authors: Szocik Konrad 
Published: May 2024

Abstract
One example of proxy failure is current antisexist and antiracist policies. One of the most popular proxy in them is the number of representatives of marginalized groups – women and nonwhite people – in power structures. Here I show that such measures do not lead to combating sexism and racism, which flourish despite their application.
Extreme mortality during a historical measles outbreak on Rotuma is consistent with measles immunosuppression
Authors: Cant Susie , Shanks G. Dennis , Keeling Matt J. , Penman Bridget S. 
Published: May 2024

Abstract
Until the early twentieth century, populations on many Pacific Islands had never experienced measles. As travel to the Pacific Islands by Europeans became more common, the arrival of measles and other pathogens had devastating consequences. In 1911, Rotuma in Fiji was hit by a measles epidemic, which killed 13% of the island population. Detailed records show two mortality peaks, with individuals reported as dying solely from measles in the first and from measles and diarrhoea in the second. Measles is known to disrupt immune system function. Here, we investigate whether the pattern of mortality on Rotuma in 1911 was a consequence of the immunosuppressive effects of measles. We use a compartmental model to simulate measles infection and immunosuppression. Whilst immunosuppressed, we assume that individuals are vulnerable to dysfunctional reactions triggered by either (i) a newly introduced infectious agent arriving at the same time as measles or (ii) microbes already present in the population in a pre-existing equilibrium state. We show that both forms of the immunosuppression model provide a plausible fit to the data and that the inclusion of immunosuppression in the model leads to more realistic estimates of measles epidemiological parameters than when immunosuppression is not included.
Hats and titles: Maya courtier dress and hierarchy in the late Classic Maya court
Authors: Cheek Charles D. 
Published: May 2024

AbstractThe Maya used dress to help them structure social interaction. Taking a behavioral chain and practice approach, I define dress elements of male courtiers and how they were combined into outfits during the daily practices of dressing and attending court. I identify two groups of headgear, Standard and Special, among courtiers on vases showing historical interaction among humans. Each vase is considered commemorative and must communicate to an audience. I identified six Standard hat types that were widespread in the Maya Lowlands. The distribution implies a basic set of recognizable roles that provided the political-religious structure of the typical Maya court, perhaps as early as the Late Preclassic period. Four of the hat types are connected to glyphic titles. Each titleholder's position in the vase's visual space implies a hierarchy of roles. The results support my hypothesis that dress does identify social roles in the Maya court.
Factors associated with family decision-making self-efficacy among family members of patients with advanced cancer in mainland China
Authors: Hu Yangfan , Wang Wenxia , Jiang Yali , Wang Xixi , Peng Xuelan , Xin Mingzhu , Zhao Juanjuan 
Published: May 2024

AbstractObjectivesIn Chinese culture, family members are the main decision maker on end-of-life (EoL) issues for patients with advanced cancer. Yet little is known about Chinese families’ confidence in making EoL decisions and its associated factors. This study aims to investigate the status and associated factors of Chinese family members’ confidence in making EoL decisions for patients with advanced cancer.MethodsThis cross-sectional study used a convenience sample of 147 family members of patients with stage III or stage IV cancer from a tertiary cancer center in Guangzhou, China. The questionnaires included demographic information of patients and their family members, patients’ EoL preferences, and the Chinese version of the Family Decision-Making Self-Efficacy (FDMSE) Scale.ResultsA total of145 family members (98.64%) completed the questionnaires. The average score of FDMSE was 3.92 ± 0.53. A multiple regression analysis showed that the factors associated with FDMSE included patients’ duration of disease, health insurance, participation in EoL decision-making, the expression of unfilled wishes, and family members’ employment status.Significance of resultsChinese family members were not confident enough in making EoL decisions for patients with advanced cancer. It is recommended to develop cultural-tailored advanced care planning models to clarify patient preferences and to enhance the family members’ self-efficacy in making EoL decisions with or for patients with advanced cancer.
Using Project ECHO to deliver a tele-mentoring and teaching program on palliative care in South Asia: Interpretive description of participants’ experiences with a community of practice for learning
Authors: Doherty Megan , Abdullah Qabirul Karan 
Published: May 2024

AbstractObjectivesTo explore the learning experiences of participants (learners and teachers), in a yearlong tele-teaching and mentoring program on pediatric palliative care, which was conducted using the Project ECHO (Extension for Community Healthcare Outcomes) model and consisted of 27 teaching and clinical case discussion sessions for palliative medicine residents in India and Bangladesh. The goal of the study is to explore how participation and learning is motivated and sustained for both residents and teachers, including the motivators and challenges to participation and learning in a novel online format.MethodsQualitative interviews with ECHO participants, including learners and teachers were conducted. Interviews were recorded and transcribed. Thematic analysis of interview data was conducted within an interpretive description approach.ResultsEleven physicians (6 residents, 5 teachers) participated in interviews. Key elements of the ECHO program which participants identified as supporting learning and participation include small group discussions, a flipped classroom, and asynchronous interactions through social media. Individual learner characteristics including effective self-reflection and personal circumstances impact learning. Providing opportunities for a diverse group of learners and teachers, to interact in communities of practice (COP) enhances learning. Three major themes and 6 subthemes describing learning processes were identified. Themes included (1) ECHO program structure, (2) learner characteristics, and (3) COP. Subthemes included flipped classroom, breakout rooms, learning resources, personal circumstances, self-awareness of learning needs, and community interactions.Significance of resultsProject ECHO suggests a novel model to train health providers, which is effective in low- and middle-income countries. Online learning programs can lead to learning through community of practice when learners and teachers are able to interact and engage in peer support and reflective practice. Educators should consider incorporating small group discussions, a flipped classroom design, and opportunities for asynchronous interactions to enhance learning for participants in online learning programs.
Online palliative care education and mentorship in Nepal: Project ECHO – a novel approach to improving knowledge and self-efficacy among interprofessional health-care providers
Authors: Mackin Christian , Shrestha Deepak Sundar , Downe Danielle , Doherty Megan 
Published: May 2024

AbstractBackgroundPalliative care access in Nepal is severely limited, with few health-care providers having training and skills to pain management and other key aspects of palliative care. Online education suggests an innovation to increase access to training and mentoring, which addresses common learning barriers in low- and middle-income countries. Project ECHO (Extensions for Community Health Care Outcomes) is a model of online education which supports communities of practices (COPs) and mentoring through online teaching and case discussions. The use of online education and Project ECHO in Nepal has not been described or evaluated.SettingAn online course, consisting of 14 synchronous weekly palliative care training sessions was designed and delivered, using the Project ECHO format. Course participants included health-care professionals from a variety of disciplines and practice settings in Nepal.ObjectivesThe goal of this study was to evaluate the impact of a virtual palliative care training program in Nepal on knowledge and attitudes of participants.MethodsPre- and post-course surveys assessed participants’ knowledge, comfort, and attitudes toward palliative care and evaluated program acceptability and barriers to learning.ResultsForty-two clinicians, including nurses (52%) and physicians (48%), participated in program surveys. Participants reported significant improvements in their knowledge and attitudes toward core palliative care domains. Most participants identified the program as a supportive COP, where they were able to share and learn from faculty and other participants.ConclusionProject ECHO is a model of online education which can successfully be implemented in Nepal, enhancing local palliative care capacity. Bringing together palliative care local and international clinical experts and teachers supports learning for participants through COP. Encouraging active participation from participants and ensuring that teaching addresses availability and practicality of treatments in the local health-care context addresses key barriers of online education.Significance of resultsThis study describes a model of structured virtual learning program, which can be implemented in settings with limited access to palliative care to increase knowledge and attitudes toward palliative care. The program equips health-care providers to better address serious health-related suffering, improving the quality of life for patients and their caregivers. The program demonstrates a model of training which can be replicated to support health-care providers in rural and remote settings.
Valuation of guaranteed minimum accumulation benefits (GMABs) with physics-inspired neural networks
Authors: Hainaut Donatien 
Published: May 2024

AbstractGuaranteed minimum accumulation benefits (GMABs) are retirement savings vehicles that protect the policyholder against downside market risk. This article proposes a valuation method for these contracts based on physics-inspired neural networks (PINNs), in the presence of multiple financial and biometric risk factors. A PINN integrates principles from physics into its learning process to enhance its efficiency in solving complex problems. In this article, the driving principle is the Feynman–Kac (FK) equation, which is a partial differential equation (PDE) governing the GMAB price in an arbitrage-free market. In our context, the FK PDE depends on multiple variables and is difficult to solve using classical finite difference approximations. In comparison, PINNs constitute an efficient alternative that can evaluate GMABs with various specifications without the need for retraining. To illustrate this, we consider a market with four risk factors. We first derive a closed-form expression for the GMAB that serves as a benchmark for the PINN. Next, we propose a scaled version of the FK equation that we solve using a PINN. Pricing errors are analyzed in a numerical illustration.
The Changing Influence of Precipitation on Soil Moisture Drought With Warming in the Mediterranean and Western North America
Authors: Nielsen Miriam , Cook Benjamin I. , Marvel Kate , Ting Mingfang , Smerdon Jason E. 
Published: May 2024

AbstractAnthropogenic climate change has already affected drought severity and risk across many regions, and climate models project additional increases in drought risk with future warming. Historically, droughts are typically caused by periods of below‐normal precipitation and terminated by average or above‐normal precipitation. In many regions, however, soil moisture is projected to decrease primarily through warming‐driven increases in evaporative demand, potentially affecting the ability of negative precipitation anomalies to cause drought and positive precipitation anomalies to terminate drought. Here, we use climate model simulations from Phase Six of the Coupled Model Intercomparison Project (CMIP6) to investigate how different levels of warming (1, 2, and 3°C) affect the influence of precipitation on soil moisture drought in the Mediterranean and Western North America regions. We demonstrate that the same monthly precipitation deficits (25th percentile relative to a preindustrial baseline) at a global warming level of 2°C increase the probability of both surface and rootzone soil moisture drought by 29% in the Mediterranean and 32% and 6% in Western North America compared to the preindustrial baseline. Furthermore, the probability of a dry (25th percentile relative to a preindustrial baseline) surface soil moisture month given a high (75th percentile relative to a preindustrial baseline) precipitation month is 6 (Mediterranean) and 3 (Western North America) times more likely in a 2°C world compared to the preindustrial baseline. For these regions, warming will likely increase the risk of soil moisture drought during low precipitation periods while simultaneously reducing the efficacy of high precipitation periods to terminate droughts.
Global Survey of Energetic Electron Precipitation at Low Earth Orbit Observed by ELFIN
Authors: Qin Murong , Li Wen , Shen Xiao‐Chen , Angelopoulos Vassilis , Selesnick Richard , Capannolo Luisa , Ma Qianli , Artemyev Anton , Zhang Xiao‐Jia 
Published: May 2024

AbstractWe statistically evaluate the global distribution and energy spectrum of electron precipitation at low‐Earth‐orbit, using unprecedented pitch‐angle and energy resolved data from the Electron Losses and Fields INvestigation CubeSats. Our statistical results indicate that during active conditions, the ∼63 keV electron precipitation ratio peaks at L > 6 at midnight, whereas the spatial distribution of precipitating energy flux peaks between the dawn and noon sectors. ∼1 MeV electron precipitation ratio peaks near midnight at L > ∼6 but is enhanced near dusk during active times. The energy spectrum of the precipitation ratio shows reversal points indicating energy dispersion as a function of L shell in both the slot region and at L > ∼6, consistent with hiss‐driven precipitation and current sheet scattering, respectively. Our findings provide accurate quantification of electron precipitation at various energies in a broad region of the Earth's magnetosphere, which is critical for magnetosphere‐ionosphere coupling.
Top of the Atmosphere Shortwave Arctic Cloud Feedbacks: A Comparison of Diagnostic Methods
Authors: Coulbury Calvin , Tan Ivy 
Published: May 2024

AbstractThe cloud feedback may result in amplification or damping of Arctic warming. Two common techniques used to diagnose the top‐of‐the‐atmosphere cloud feedback are the Adjusted Cloud Radiative Effect (AdjCRE) method and the Cloud Radiative Kernel (CRK) method. We apply both to CMIP5 and CMIP6 model data, finding that the AdjCRE calculated Arctic shortwave cloud feedback is twice as correlated with sea ice loss in CMIP5, and four times in CMIP6, as the CRK method. We find that the CRK method produces Arctic all‐sky residual percentages exceeding 20% in 15 of 18 models. We use the CRK method to decompose the feedback in CMIP5 and CMIP6 finding that its median value changed from negative to positive driven by a less‐negative cloud optical depth feedback. Despite its lack of closure, we conclude that the CRK method is better suited for Arctic SW feedbacks as it is less impacted by surface albedo changes.
Reservoir Filling Up Problems in a Changing Climate: Insights From CryoSat‐2 Altimetry
Authors: Wang Zhiwei , Jiang Liguang , Nielsen Karina , Wang Lei 
Published: May 2024

AbstractRecent droughts have severely threatened water security in many regions worldwide. Reservoirs, designed to combat droughts and secure water supply partially, are reported failing to fill up to the total capacity due to severe droughts. How bad is climate affecting reservoir filling up on a global scale? This issue has not been studied. We present a big picture of reservoirs in crisis using satellite altimetry. Thanks to the unique characteristics of CryoSat‐2, 525 reservoirs worldwide were investigated during 2010–2022. Results show that most reservoirs (93%) are found not fully filled up at least once. About 21% of reservoirs, which are mainly located in the Southern Hemisphere, show a significant decline in water levels. Moreover, about 20% of reservoirs with larger level fluctuations (>3 m) are located in less developed economies, indicating informed operation rules are needed. Further analyses indicate reservoirs are largely affected by extreme climate events, such as ENSO.
Unveiling the oral-gut connection: chronic apical periodontitis accelerates atherosclerosis via gut microbiota dysbiosis and altered metabolites in apoE−/− Mice on a high-fat diet
Authors: Gan Guowu , Lin Shihan , Luo Yufang , Zeng Yu , Lu Beibei , Zhang Ren , Chen Shuai , Lei Huaxiang , Cai Zhiyu , Huang Xiaojing 
Published: May 2024

AbstractThe aim of this study was to explore the impact of chronic apical periodontitis (CAP) on atherosclerosis in apoE−/− mice fed high-fat diet (HFD). This investigation focused on the gut microbiota, metabolites, and intestinal barrier function to uncover potential links between oral health and cardiovascular disease (CVD). In this study, CAP was shown to exacerbate atherosclerosis in HFD-fed apoE−/− mice, as evidenced by the increase in plaque size and volume in the aortic walls observed via Oil Red O staining. 16S rRNA sequencing revealed significant alterations in the gut microbiota, with harmful bacterial species thriving while beneficial species declining. Metabolomic profiling indicated disruptions in lipid metabolism and primary bile acid synthesis, leading to elevated levels of taurochenodeoxycholic acid (TCDCA), taurocholic acid (TCA), and tauroursodeoxycholic acid (TDCA). These metabolic shifts may contribute to atherosclerosis development. Furthermore, impaired intestinal barrier function, characterized by reduced mucin expression and disrupted tight junction proteins, was observed. The increased intestinal permeability observed was positively correlated with the severity of atherosclerotic lesions, highlighting the importance of the intestinal barrier in cardiovascular health. In conclusion, this research underscores the intricate interplay among oral health, gut microbiota composition, metabolite profiles, and CVD incidence. These findings emphasize the importance of maintaining good oral hygiene as a potential preventive measure against cardiovascular issues, as well as the need for further investigations into the intricate mechanisms linking oral health, gut microbiota, and metabolic pathways in CVD development.