bluuebunny/crossref_metadata_2025_split huggingface dataset:
Resonance-based schemes for dispersive equations via decorated trees
Authors: Bruned Yvain , Schratz Katharina 
Published: January 2022

AbstractWe introduce a numerical framework for dispersive equations embedding their underlying resonance structure into the discretisation. This will allow us to resolve the nonlinear oscillations of the partial differential equation (PDE) and to approximate with high-order accuracy a large class of equations under lower regularity assumptions than classical techniques require. The key idea to control the nonlinear frequency interactions in the system up to arbitrary high order thereby lies in a tailored decorated tree formalism. Our algebraic structures are close to the ones developed for singular stochastic PDEs (SPDEs) with regularity structures. We adapt them to the context of dispersive PDEs by using a novel class of decorations which encode the dominant frequencies. The structure proposed in this article is new and gives a variant of the Butcher–Connes–Kreimer Hopf algebra on decorated trees. We observe a similar Birkhoff type factorisation as in SPDEs and perturbative quantum field theory. This factorisation allows us to single out oscillations and to optimise the local error by mapping it to the particular regularity of the solution. This use of the Birkhoff factorisation seems new in comparison to the literature. The field of singular SPDEs took advantage of numerical methods and renormalisation in perturbative quantum field theory by extending their structures via the adjunction of decorations and Taylor expansions. Now, through this work, numerical analysis is taking advantage of these extended structures and provides a new perspective on them.
NEW RADIOCARBON DATES FROM ARCHAEOLOGICAL SITES IN PARTS OF IGBOLAND, SOUTHEASTERN NIGERIA
Authors: Daniel Kenechukwu Chidiogo , Ibeanu Anselm Maduabuchi , Ikegwu Jacinta Uchenna , Orijemie Emuobosa Akpo 
Published: January 2022

ABSTRACTThis paper presents new results of radiocarbon (14C) ages from archaeological sites in northern Igboland. The study was designed to shed more light on early human occupation and activities in the study area based on sediments from cave and iron-smelting sites. The approach consisted of ethnographic, archaeological, palynological, and slag analyses; these were complemented with 14C dates. The technology adopted as well as the paleoenvironmental conditions that prevailed during the period of human settlement in both sites was revealed. These data, complemented by 14C dates, highlight the human behavioral and subsistence patterns within the region and are comparable to those from similar sites in southeastern Nigeria.
Low temperature triggers physiological and behavioral shifts in adult oriental armyworm, Mythimna separata
Authors: Wang Fang , Lv Weixiang 
Published: January 2022

AbstractMigratory insects display diverse behavioral strategies in response to external environmental shifts, via energy allocation of migration-reproduction trade-offs. However, how migratory insects distribute energy between migration and reproduction as an adaptive strategy to confront temporary low temperatures remains unclear. Here, we used Mythimna separata, a migratory cereal crop pest, to explore the effects of low temperature on reproductive performance, behavior, and energy allocation. We found that the influence of low temperatures on reproduction was not absolutely negative, but instead depended on the intensity, duration, and age of exposure to low temperature. Exposure to 6°C for 24 h significantly accelerated the onset of oviposition and ovarian development, and increased the synchrony of egg-laying and lifetime fecundity in 1-day-old adults compared to the control, while female's flight capacity decreased significantly on the first and second day after moths were exposed to 6°C. Furthermore, the abdominal and total triglycerides levels of females decreased significantly from exposure to low temperature, but their thoracic triglyceride content was significantly higher than the control on the third and fourth day. These results indicated that low temperatures induced M. separata to reduce energy investment for the development of flight system. This resulted in the shifting of moths from being migrants to residents during the environmental sensitive period (first day post-emergence). This expands our understanding of the adaptive strategy employed by migratory insects to deal with low temperatures and aids in the management of this pest species in China.
La Pata de Cabra, Satire and Free Speech in Nineteenth-Century Mexico City
Authors: Ingwersen Lance 
Published: January 2022

AbstractThe article examines how La Pata de Cabra (The Goat's Hoof ), an over-the-top fantastical Spanish comedia de magia (magic play), came to figure centrally in serious debates about Mexican politics and society between 1845 and 1857. The article explores the play's popularity and its resonance in the press – it spawned at least half a dozen satirical newspapers – to argue that satire became a critical political language and form of expression that broadened and sustained debates in an era marked by volatile and often heavily restricted press freedoms. The article's focus on the La Pata phenomenon brings two fields of study, theatre and the press, into productive and necessary conversation.
The magnitude of neurocognitive impairment is overestimated in depression: the role of motivation, debilitating momentary influences, and the overreliance on mean differences
Authors: Moritz Steffen , Xie Jingyuan , Penney Danielle , Bihl Lisa , Hlubek Niklas , Elmers Julia , Beblo Thomas , Hottenrott Birgit 
Published: January 2022

AbstractBackgroundMeta-analyses agree that depression is characterized by neurocognitive dysfunctions relative to nonclinical controls. These deficits allegedly stem from impairments in functionally corresponding brain areas. Increasingly, studies suggest that some performance deficits are in part caused by negative task-taking attitudes such as poor motivation or the presence of distracting symptoms. A pilot study confirmed that these factors mediate neurocognitive deficits in depression. The validity of these results is however questionable given they were based solely on self-report measures. The present study addresses this caveat by having examiners assess influences during a neurocognitive examination, which were concurrently tested for their predictive value on performance.MethodsThirty-three patients with depression and 36 healthy controls were assessed on a battery of neurocognitive tests. The examiner completed the Impact on Performance Scale, a questionnaire evaluating mediating influences that may impact performance.ResultsOn average, patients performed worse than controls at a large effect size. When the total score of the Impact on Performance Scale was accounted for by mediation analysis and analyses of covariance, group differences were reduced to a medium effect size. A total of 30% of patients showed impairments of at least one standard deviation below the mean.ConclusionsThis study confirms that neurocognitive impairment in depression is likely overestimated; future studies should consider fair test-taking conditions. We advise researchers to report percentages of patients showing performance deficits rather than relying solely on overall group differences. This prevents fostering the impression that the majority of patients exert deficits, when in fact deficits are only true for a subgroup.
Prevalence of antibodies against SARS-CoV-2 among pregnant women in Norway during the period December 2019 through December 2020
Authors: Eskild Anne , Mørkrid Lars , Mortensen Siri Beisland , Leegaard Truls Michael 
Published: January 2022

Abstract
We studied severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) seroprevalence among pregnant women in Norway by including all women who were first trimester pregnant (n = 6520), each month from December 2019 through December 2020, in the catchment region of Norway's second-largest hospital. We used sera that had been frozen stored after compulsory testing for syphilis antibodies in antenatal care. The sera were analysed with the Elecsys® Anti-SARS-CoV-2 immunoassay (Roche Diagnostics, Cobas e801). This immunoassay detects IgG/IgM against SARS-CoV-2 nucleocapsid antigen. Sera with equivocal or positive test results were retested with the Liaison® SARS-CoV-2 S1/S2 IgG (DiaSorin), which detects IgG against the spike (S)1 and S2 protein on the SARS-CoV-2 virus. In total, 98 women (adjusted prevalence 1.7%) had SARS CoV-2 antibodies. The adjusted seroprevalence increased from 0.3% (1/445) in December 2019 to 5.7% (21/418) in December 2020. Out of the 98 seropositive women, 36 (36.7%) had serological signs of current SARS-CoV-2 infection at the time of serum sampling, and the incidence remained low during the study period. This study suggests that SARS CoV-2 was present in the first half of December 2019, 6 weeks before the first case was recognised in Norway. The low occurrence of SARS-CoV-2 infection during 2020, may be explained by high compliance to extensive preventive measures implemented early in the epidemic.
Cardiovascular manifestations of Hutchinson–Gilford progeria syndrome
Authors: Palma Andreia , Silva Patrícia V. , Pires António 
Published: January 2022

AbstractCardiovascular complications are the most frequent cause of death in patients with the Hutchinson–Gilford progeria syndrome. However, due to its rarity, studying the course of cardiac abnormalities has been a challenge. The cardiovascular phenotype helps to provide greater insight into the natural history of these abnormalities.
Primary health care workers perspective towards cancer in Fiji: a qualitative study
Authors: Kumar Kaushal , Mohammadnezhad Masoud 
Published: January 2022

AbstractBackground:By 2040, the predicted global cancer burden is expected to be more than 27 million new cancer cases per year. Understanding primary health care workers’ (HCWs) perception on cancer can highlight new ways in which cancer advocacy can be increased. This study aimed to explore the perceptions of primary HCWs in Lautoka, Fiji, towards common cancers with focus on knowledge, risk perceptions, barriers and preventive approaches.Methods:The study used a qualitative method approach. The study was conducted among primary HCWs at four purposively selected health centres in Lautoka Subdivision, Fiji, from 1 March 2021 to 1 April 2021. Focus group discussions (FGDs) were conducted with primary HCWs. A semi-structured open-ended questionnaire was used to collect data, and the FGDs were audio-recorded. These audio recordings were transcribed and analysed using thematic analysis.Results:The responses from the four FGDs with six primary HCWs in each group emerged four major themes. These themes were cancer knowledge, health professional training, barriers and challenges and awareness strategies. Primary HCWs were not fully aware about common cancers and were not confident to discuss about cancer with their patients which is an important role of primary HCWs in cancer management. This lack of knowledge was attributed to less training received in primary care setting. Barriers to accessing cancer screening included misconceptions about cancer, negative attitudes from patients, stigmatization, lack of resources at health facility and less informed health staff. Community outreach programmes, opportunistic screening, community HCWs and the concept of a cancer hub centre were awareness strategies highlighted by primary HCWs.Conclusions:Lack of knowledge about common cancers among primary HCWs is a concern that is depicted well in this study. This low knowledge was attributed to lack of training on cancers received by primary HCWs. Guidelines on cancer screening and diagnosis can be developed by the health ministry to assist primary HCWs in detecting patients at pre-cancerous stage.
Adaptive teaching for GCSE and A level classical literature
Authors: Coe Becky , Steven Hunt 
Published: January 2022

AbstractThe new ITT Common Core Framework (CCF) for teachers expects trainee and early-career teachers to adapt their teaching to support all students in class (Department for Education, 2021). What used to be called ‘differentiation’ is now referred to as ‘adaptive teaching’ and full details of what it consists of, as far as the Department for Education in England is concerned, can be found on pages 19–20 of the CCF document. Much of the advice of that document is about supporting students with special educational needs and disabilities, about teachers’ need to recognise that different students have different levels of prior attainment and may have barriers to learning, and how different types of student grouping may affect learning in different ways. It dismisses as a ‘common misconception’ that students have different learning styles and warns against teachers creating ‘distinct tasks for different groups of pupils’ or ‘setting lower expectations for particular pupils’.
Effects of CO2 and Ocean Mixing on Miocene and Pliocene Temperature Gradients
Authors: Lohmann Gerrit , Knorr Gregor , Hossain Akil , Stepanek Christian 
Published: January 2022

AbstractCenozoic climate changes have been linked to tectonic activity and variations in atmospheric CO2 concentrations. Here, we present Miocene and Pliocene sensitivity experiments performed with the climate model COSMOS. The experiments contain changes with respect to paleogeography, ocean gateway configuration, and atmospheric CO2 concentrations, as well as a range of vertical mixing coefficients in the ocean. For the mid‐Miocene, we show that the impact of ocean mixing on surface temperature is comparable to the effect of the possible range in reconstructed CO2 concentrations. In combination with stronger vertical mixing, relatively moderate CO2 concentrations of 450 ppmv enable global‐mean surface, deep‐water, and meridional temperature characteristics representative of mid‐Miocene Climatic Optimum (MMCO) reconstructions. The Miocene climate shows a reduced meridional temperature gradient and reduced seasonality. In the case of enhanced mixing, surface and deep ocean temperatures show significant warming of up to 5–10°C and an Arctic temperature anomaly of >12°C. In the Pliocene simulations, the impact of vertical mixing and CO2 is less important for the deep ocean, which we interpret as a different sensitivity dependence on the background state and mixed layer dynamics. We find a significant reduction in surface albedo and effective emissivity for either a high level of atmospheric CO2 or increased vertical mixing. Our mixing sensitivity experiments provide a warm deep ocean via ocean heat uptake. We propose that the mixing hypothesis can be tested by reconstructions of the thermocline and seasonal paleoclimate data indicating a lower seasonality relative to today.
Trophic State Assessment of a Freshwater Himalayan Lake Using Landsat 8 OLI Satellite Imagery: A Case Study of Wular Lake, Jammu and Kashmir (India)
Authors: Mushtaq Fayma , Nee Lala Mili Ghosh , Mantoo Afaan Gulzar 
Published: January 2022

AbstractA new version of Trophic State Index for freshwater Himalayan Lake (TSIFHL) has been derived from Landsat 8 OLI to determine the aquatic health of the lake ecosystem. TSIFHL is based on chlorophyll‐a concentration (CChl‐a) which has been retrieved from Landsat 8 OLI data and laboratory measurements using an empirical approach. Further, in situ measurements have also been taken with Secchi disk depth (ZSD) in a freshwater Himalayan Lake (FHL). The derived CChl‐a exhibited lower and upper limit of 25.81 and 207.96 μg/L, respectively. The modeled ZSD values ranged between 0.18 and 0.66 m with an average depth of 0.50 m. The best‐fitted regression model, developed for CChl‐a with R2 = 0.89, exhibited model error of 0.77 μg/L for the standard error of estimate (SEE). The mean absolute percentage error (MAPE), and Nash‐Sutcliffe coefficient (E) values were 5.83% and 0.98 μg/L, respectively. For the ZSD, the best‐fitted model showed errors of 0.11 μg/L (SEE), 13.93% (MAPE), and 0.77 μg/L (E) with R2 = 0.84. The proposed model is useful for bio‐optical studies of Himalayan Lake ecosystems and could provide potential support for inland water management. Long term strategies like multisector monitoring and control of nutrient load entering the lake can be developed to alleviate problems of eutrophication.
Oscillatory Loading Can Alter the Velocity Dependence of Ice‐on‐Rock Friction
Authors: Skarbek Rob M. , McCarthy Christine , Savage Heather M. 
Published: January 2022

AbstractRate and state frictional parameters are typically determined using two types of experimental protocols: velocity steps and slide‐hold‐slide events. Here we take a new approach by examining the frictional response to controlled, harmonic oscillations in load point velocity. We present a Matlab graphical user interface software package, called RSFitOSC, that allows users to easily determine frictional parameters by fitting oscillation events using the rate and state friction equations. We apply our new methods to a set of ice‐rock friction experiments conducted over a temperature range of −16.4°C to −2°C, and described in a companion paper: McCarthy et al. (2021, https://doi.org/10.1002/essoar.10509831.110.1002/essoar.10509831.1). Values of the frictional stability parameter (a–b) determined from oscillations reveal dominantly velocity‐weakening behavior across the entire range of experimental conditions. However, values of (a–b) determined from velocity steps in the same experiments yield velocity‐strengthening behavior. We also show that the elastic stiffness of the ice‐rock system depends on the temperature, and is unlikely to be explained by changes in the elastic properties of ice. Load point velocity oscillations induce oscillations in applied shear stress. Many natural fault systems exhibit slip behaviors that depend on harmonic oscillations in applied tidal stresses. Our new method provides a way to study how frictional properties directly depend on parameters relevant to tidal forcing, and how oscillatory loading must be considered when extracting friction parameters.
Freshwater Transport in the Scotian Shelf and Its Impacts on the Gulf of Maine Salinity
Authors: Wang Zhengui , Li Denghui , Xue Huijie , Thomas Andrew C. , Zhang Yinglong J. , Chai Fei 
Published: January 2022

AbstractA 3D unstructured‐grid ocean circulation model covering the continental shelf and coastal seas around New England is used to investigate freshwater transport (FWT) on the Scotian Shelf (SS) and its impact on the salinity in the Gulf of Maine (GoME). The model was first validated using observed elevation, velocity, temperature, and salinity at multiple locations, demonstrating generally high model skills. Intraseasonal variabilities of freshwater fluxes in 2017 and 2018 were then analyzed across different transects around SS and Browns Bank (BB). These indicated that the flow pattern in SS during 2017 was consistent with previous understanding: low salinity water flows southwestward along the shelf and turns into the GoME around BB. However, in 2018, most of the low salinity water did not enter the GoME, but was transported to the open ocean. The most striking difference occurred early in the year when the FWT, normally at its maximum, was practically stopped by an anticyclonic eddy impinging upon the shelf break near the western end of SS. Then in March, in contrast to the prevailing eastward wind, two southwestward wind events occurred that induced an excessive amount of FWT in SS. We further showed that when anticyclonic eddies impinge on the shelf break, the typical geostrophic balance associated with southwestward flow is interrupted, and a new geostrophic balance is established with the directions of pressure gradient force and flow reversed. The influence from anticyclonic eddies explains the abnormally low FWT in SS and higher GoME salinity in 2018.
A Moderate Mitigation Can Significantly Delay the Emergence of Compound Hot Extremes
Authors: Ma Feng , Yuan Xing , Wu Peili , Zeng Zhenzhong 
Published: January 2022

AbstractCompound hot extremes (ChotEs) that refer to continuous heats throughout days and nights are projected to increase, causing more serious impacts on human health than daytime or nighttime heats alone. Previous studies have focused on daytime heats, but the timing of substantial increase in ChotEs relative to natural variability, which is defined as the time of emergence (ToE) for ChotEs, remains unknown. Here we examine ToE for duration of summertime ChotEs from coupled model intercomparison project phase 6 climate model projections under two shared socioeconomic pathway scenarios (i.e., SSP245 and SSP585). We further quantify the cumulative fraction of areal and population exposed to the emergence at global and continental scales. We find that, without implementation of climate mitigation policies (i.e., SSP585), global mean ToE is around 2062 (with 16%–84% uncertainty range of 2048–2072). On the basis of the ToE for each grid cell, 80.7% (with uncertainty range of 64.2%–96.7%) of global lands will expose to the emergence by 2080. Such substantial increases in ChotEs will lead to 75.2% (66.8%–93%) of global population exposed to the emergence by the end of 21st century. A moderate mitigation (i.e., SSP245) can delay the ToE by over 14 years and, more importantly, reduce the global land areal and population exposures by 50.3% and 39.7% respectively. Regionally, northern Europe, central America and western North America benefit the most. Therefore, early action towards moderate development socioeconomic pathways can remarkably cut back the possibility of large population exposure to ChotEs and relevant impacts.
Development and validation of a prediction index for recent mortality in advanced COPD patients
Authors: Tsai Sheng-Han , Shih Chia-Yin , Kuo Chin-Wei , Liao Xin-Min , Lin Peng-Chan , Chen Chian-Wei , Hsiue Tzuen-Ren , Chen Chiung-Zuei 
Published: January 2022

AbstractThe primary barrier to initiating palliative care for advanced COPD patients is the unpredictable course of the disease. We enroll 752 COPD patients into the study and validate the prediction tools for 1-year mortality using the current guidelines for palliative care. We also develop a composite prediction index for 1-year mortality and validate it in another cohort of 342 patients. Using the current prognostic models for recent mortality in palliative care, the best area under the curve (AUC) for predicting mortality is 0.68. Using the Modified Medical Research Council dyspnea score and oxygen saturation to define the combined dyspnea and oxygenation (DO) index, we find that the AUC of the DO index is 0.84 for predicting mortality in the validated cohort. Predictions of 1-year mortality based on the current palliative care guideline for COPD patients are poor. The DO index exhibits better predictive ability than other models in the study.
An exomoon survey of 70 cool giant exoplanets and the new candidate Kepler-1708 b-i
Authors: Kipping David , Bryson Steve , Burke Chris , Christiansen Jessie , Hardegree-Ullman Kevin , Quarles Billy , Hansen Brad , Szulágyi Judit , Teachey Alex 
Published: January 2022

AbstractExomoons represent a crucial missing puzzle piece in our efforts to understand extrasolar planetary systems. To address this deficiency, we here describe an exomoon survey of 70 cool, giant transiting exoplanet candidates found by Kepler. We identify only one exhibiting a moon-like signal that passes a battery of vetting tests: Kepler-1708 b. We show that Kepler-1708 b is a statistically validated Jupiter-sized planet orbiting a Sun-like quiescent star at 1.6 au. The signal of the exomoon candidate, Kepler-1708 b-i, is a 4.8σ effect and is persistent across different instrumental detrending methods, with a 1% false-positive probability via injection–recovery. Kepler-1708 b-i is ~2.6 Earth radii and is located in an approximately coplanar orbit at ~12 planetary radii from its ~1.6 au Jupiter-sized host. Future observations will be necessary to validate or reject the candidate.