bluuebunny/crossref_metadata_2025_split huggingface dataset:
Early Science from POSSUM: Shocks, turbulence, and a massive new reservoir of ionised gas in the Fornax cluster
Authors: Anderson C. S. , Heald G. H. , Eilek J. A. , Lenc E. , Gaensler B. M. , Rudnick Lawrence , Van Eck C. L. , O’Sullivan S. P. , Stil J. M. , Chippendale A. , Riseley C. J. , Carretti E. , West J. , Farnes J. , Harvey-Smith L. , McClure-Griffiths N. M. , Bock Douglas C. J. , Bunton J. D. , Koribalski B. , Tremblay C. D. , Voronkov M. A. , Warhurst K. 
Published: April 2021

AbstractWe present the first Faraday rotation measure (RM) grid study of an individual low-mass cluster—the Fornax cluster—which is presently undergoing a series of mergers. Exploiting commissioning data for the POlarisation Sky Survey of the Universe’s Magnetism (POSSUM) covering a${\sim}34$square degree sky area using the Australian Square Kilometre Array Pathfinder (ASKAP), we achieve an RM grid density of${\sim}25$RMs per square degree from a 280-MHz band centred at 887 MHz, which is similar to expectations for forthcoming GHz-frequency${\sim}3\pi$-steradian sky surveys. These data allow us to probe the extended magnetoionic structure of the cluster and its surroundings in unprecedented detail. We find that the scatter in the Faraday RM of confirmed background sources is increased by$16.8\pm2.4$rad m−2within 1$^\circ$(360 kpc) projected distance to the cluster centre, which is 2–4 times larger than the spatial extent of the presently detectable X-ray-emitting intracluster medium (ICM). The mass of the Faraday-active plasma is larger than that of the X-ray-emitting ICM and exists in a density regime that broadly matches expectations for moderately dense components of the Warm-Hot Intergalactic Medium. We argue that forthcoming RM grids from both targeted and survey observations may be a singular probe of cosmic plasma in this regime. The morphology of the global Faraday depth enhancement is not uniform and isotropic but rather exhibits the classic morphology of an astrophysical bow shock on the southwest side of the main Fornax cluster, and an extended, swept-back wake on the northeastern side. Our favoured explanation for these phenomena is an ongoing merger between the main cluster and a subcluster to the southwest. The shock’s Mach angle and stand-off distance lead to a self-consistent transonic merger speed with Mach 1.06. The region hosting the Faraday depth enhancement also appears to show a decrement in both total and polarised radio emission compared to the broader field. We evaluate cosmic variance and free-free absorption by a pervasive cold dense gas surrounding NGC 1399 as possible causes but find both explanations unsatisfactory, warranting further observations. Generally, our study illustrates the scientific returns that can be expected from all-sky grids of discrete sources generated by forthcoming all-sky radio surveys.
U–Pb and Hf isotope study of detrital zircon and Cr-spinel in the Banavara quartzite and implications for the evolution of the Dharwar Craton, south India
Authors: Maibam Bidyananda , Lenaz Davide , Foley Stephen , Berndt Jasper , Belousova Elena , Wangjam Monica , Goswami Jitendra N. , Kapsiotis Argyrios 
Published: April 2021

AbstractThe Sargur Group has been considered to be the oldest group (>3.0 Ga) in the Archaean sequence of the Dharwar Craton in south India, whereas the rocks of the Dharwar Supergroup are younger (between 3.0 and 2.55 Ga). The supracrustal units of the Sargur Group were deposited during the Archaean period. The Banavara quartzite forms part of the supracrustal Sargur Group and contains significant amounts of chromian spinel (Cr-spinel). Here, U–Pb and Hf isotopes of detrital zircons are integrated with compositional data and X-ray refinement parameters for Cr-spinels to decipher the provenance of the metasediments. Zircons show an age spectrum from 3.15 to 2.50 Ga, and juvenile Hf isotopic compositions (ϵHf = +0.8 to +6.4) with model ages between 3.3 and 3.0 Ga. Major- and trace-element contents of the Cr-spinels do not resemble those in the Sargur ultramafic rocks, but resemble well-characterized Archaean anorthosite-hosted chromites. Cr-spinel trace-element signatures indicate that they have undergone secondary alteration or metamorphism. X-ray refinement parameters for the Cr-spinels also resemble the anorthosite-hosted chromites. We conclude that the detrital minerals were probably derived from gneissic and anorthositic rocks of the Western Dharwar Craton, and that the Sargur Group sequences have experienced a younger (2.5 Ga) metamorphic overprint.
COVID-19 in Brazil: spatial risk, social vulnerability, human development, clinical manifestations and predictors of mortality – a retrospective study with data from 59 695 individuals
Authors: Baggio Jussara Almeida Oliveira , Machado Michael Ferreira , Carmo Rodrigo Feliciano do , Armstrong Anderson da Costa , Santos Alan Dantas dos , Souza Carlos Dornels Freire de 
Published: April 2021

Abstract
Brazil ranks second in the number of confirmed cases of COVID-19 worldwide. In spite of this, coping measures differ throughout the national territory, as does the disease's impact on the population. This cross-sectional observational study, with 59 695 cases of COVID-19 registered in the state of Alagoas between March and August 2020, analysed clinical-epidemiological variables, incidence rate, mortality rate, case fatality rate (CFR) and the social indicators municipal human development index (MHDI) and social vulnerability index (SVI). Moran statistics and regression models were applied. Logistic regression analysis was applied to determine the predictors of death. The incidence rate was 1788.7/100 000 inhabitants; mortality rate was 48.0/100 000 and CFR was 2.7%. The highest incidence rates were observed in municipalities with better human development (overall MHDI (I = 0.1668; p = 0.002), education MHDI (I = 0.1649; p = 0.002) and income MHDI (I = 0.1880; p = 0.005)) and higher social vulnerability (overall SVI (I = 0.0599; p = 0.033)). CFR was associated with higher social vulnerability (SVI human capital (I = 0.0858; p = 0.004) and SVI urban infrastructure (I = 0.0985; p = 0.040)). Of the analysed cases, 55.4% were female; 2/3 were Black or Brown and the median age was 41 years. Among deaths, most were male (919; 57.4%) and elderly (1171; 73.1%). The predictors of death were male sex, advanced age and the presence of comorbidities. In Alagoas, Brazil, the disease has undergone a process of interiorisation and caused more deaths in poorer municipalities. The presence of comorbidities and advanced age were predictors of death.
A Roman altar on Mount Gerizim: Rediscovering a civic icon on tetradrachms of Neapolis (Samaria)
Authors: Kropp Andreas J. M. 
Published: April 2021

AbstractThis article examines the iconography of a type of Caracalla tetradrachm that has been newly attributed to Neapolis in Roman Palestine and whose reverse depicts a monumental altar decorated with statues of Tyche, Ephesian Artemis, and Kore Persephone. The study contextualizes these deities in the religious life of Neapolis and identifies the monument as an altar often depicted as a miniscule element in panoramic views of Mount Gerizim on the bronze coins of Neapolis. The tetradrachms provide, for the first time, a close-up view of this long-lost civic monument.
Active Maintenance: A Proposal for the Long-Term Computational Reproducibility of Scientific Results
Authors: Peer Limor , Orr Lilla V. , Coppock Alexander 
Published: April 2021

ABSTRACTComputational reproducibility, or the ability to reproduce analytic results of a scientific study on the basis of publicly available code and data, is a shared goal of many researchers, journals, and scientific communities. Researchers in many disciplines including political science have made strides toward realizing that goal. A new challenge, however, has arisen. Code too often becomes obsolete within only a few years. We document this problem with a random sample of studies posted to the Institution for Social and Policy Studies (ISPS) Data Archive; we encountered nontrivial errors in seven of 20 studies. In line with similar proposals for the long-term maintenance of data and commercial software, we propose that researchers dedicated to computational reproducibility should have a plan in place for “active maintenance” of their analysis code. We offer concrete suggestions for how data archives, journals, and research communities could encourage and reward the active maintenance of scientific code and data.
TrafficProblems:Authority, Mobility, and Technology in Mexico's Federal District, 1867–1912
Authors: Bess Michael K. 
Published: April 2021

AbstractThis article examines how people in Mexico's Federal District (Distrito Federal) contested transit policies and responded to the introduction of new technical infrastructures, like the electrified tram network. District officials published transit guidelines that reflected elite preoccupation with order, but their heavy-handed policies faced resistance from poor, working-class, and middle-class residents. This defiance took different forms: noncompliance, rule-breaking, public protests, and written complaints to officials and the press. Municipal governments wielded considerable power to shape policy and clashed over jurisdiction and authority over taxation and police mobility. National leaders serving the strongman president, Porfirio Díaz, undermined this influence and consolidated decision-making authority in the office of the district governor and the city council of Mexico City. They justified limiting municipal authority and democratic participation in the district as necessary to improve urban transportation infrastructure, improve tax collection, and streamline transit policy. Nevertheless, this attempt at centralization failed amid public complaints about continuing service problems and allegations of official incompetence in theDirección de Obras Públicas(directorate of public works). After 1910, when the Mexican Revolution brought a new generation of political leadership to power, the policy was reversed, serving as an important symbolic and administrative break with the past.
Impacts of Land Use/Land Cover Distributions and Vegetation Amount on Land Surface Temperature Simulation in East China
Authors: Pan Yongjie , Gao Yanhong , Li Suosuo 
Published: April 2021

AbstractLand surface temperature (LST) plays a crucial role in the earth system because its heterogeneous spatial distributions can trigger local circulations through land surface‐atmosphere interactions. An accurate simulation of the LST spatial distribution heavily rely on the accuracy of the land surface characteristics, such as LULC (land use/land cover). To investigate the impact of uncertainty in LULC maps on LST simulation, the Community Land Model, version 4.5 (CLM4.5), was used in this study with four LULC products as overlying vegetation characteristics. East China, with its complex land surface characteristics, was employed as the study area. The simulation results were compared to the observations at nine China Meteorological Administration (CMA) stations and to Moderate Resolution Imaging Spectroradiometer data (MOIDIS_LST) over the whole study region. Based on the comparison at CMA stations, CLM4.5 can properly simulate ground temperature. However, large differences are found between MODIS_LST and the simulated LST, particularly over crop areas. Comparison of simulated results using different LULC products showed a large dissimilarity over forest areas, mainly due to the different identification methods for forest types. Large biases in the prescribed leaf area index (LAI) of the model are also found compared with MODIS_LAI. Then, the LAI in the model default data was replaced by the MODIS_LAI product, which greatly reduces the LST simulation biases. These findings provide insights into improving the simulation of LST and land‐atmosphere interactions in regional weather models or global climate models.
Establishing the Suitability of the Model for Prediction Across Scales for Global Retrospective Air Quality Modeling
Authors: Gilliam Robert C. , Herwehe Jerold A. , Bullock O. Russell , Pleim Jonathan E. , Ran Limei , Campbell Patrick C. , Foroutan Hosein 
Published: April 2021

AbstractThe U.S. EPA (United States Environmental Protection Agency) is leveraging recent advances in meteorological modeling to construct an air quality modeling system to allow consistency from global to local scales. The Model for Prediction Across Scales‐Atmosphere (MPAS‐A or MPAS) has been developed by the National Center for Atmospheric Research (NCAR) as a global complement to the Weather Research and Forecasting model (WRF). Patterned after a regional coupled system with WRF, the Community Multiscale Air Quality (CMAQ) modeling system has been coupled within MPAS to explore global‐to‐local chemical transport modeling. Several options were implemented into MPAS for retrospective applications. Nudging‐based data assimilation was added to support continuous simulations of past weather to minimize error growth that exists with a weather forecast configuration. The Pleim‐Xiu land‐surface model, the Asymmetric Convective Model 2 boundary layer scheme, and the Pleim surface layer scheme were added as the preferred options for retrospective air quality applications with WRF. Annual simulations were conducted using this EPA‐enhanced MPAS configuration on two different mesh structures and compared against WRF. MPAS generally compares well with WRF over the conterminous United States. Errors in MPAS surface meteorology are comparable to WRF throughout the year. Precipitation statistics indicate MPAS performs slightly better than WRF. Solar radiation in MPAS is higher than WRF and measurements, suggesting fewer clouds in MPAS than WRF. Upper‐air meteorology is well‐simulated by MPAS, but errors are slightly higher than WRF. These comparisons lend confidence to use MPAS for retrospective air quality modeling and suggest ways it can be further improved in the future.
A Decade of Lessons Learned from the 2011 Tohoku‐Oki Earthquake
Authors: Uchida N. , Bürgmann R. 
Published: April 2021

AbstractThe 2011 Mw 9.0 Tohoku‐oki earthquake is one of the world's best‐recorded ruptures. In the aftermath of this devastating event, it is important to learn from the complete record. We describe the state of knowledge of the megathrust earthquake generation process before the earthquake, and what has been learned in the decade since the historic event. Prior to 2011, there were a number of studies suggesting the potential of a great megathrust earthquake in NE Japan from geodesy, geology, seismology, geomorphology, and paleoseismology, but results from each field were not enough to enable a consensus assessment of the hazard. A transient unfastening of interplate coupling and increased seismicity were recognized before the earthquake, but did not lead to alerts. Since the mainshock, follow‐up studies have (1) documented that the rupture occurred in an area with a large interplate slip deficit, (2) established large near‐trench coseismic slip, (3) examined structural anomalies and fault‐zone materials correlated with the coseismic slip, (4) clarified the historical and paleoseismic recurrence of M∼9 earthquakes, and (5) identified various kinds of possible precursors. The studies have also illuminated the heterogeneous distribution of coseismic rupture, aftershocks, slow earthquakes and aseismic afterslip, and the enduring viscoelastic response, which together make up the complex megathrust earthquake cycle. Given these scientific advances, the enhanced seismic hazard of an impending great earthquake can now be more accurately established, although we do not believe such an event could be predicted with confidence.
Probabilistic Reconstruction of Hydrofacies With Support Vector Machines
Authors: Dendumrongsup Nutchapol , Tartakovsky Daniel M. 
Published: April 2021

AbstractDelineation of geological features from limited hard and/or soft data is crucial to predicting subsurface phenomena. Ubiquitous sparsity of available data implies that the reliability of any delineation effort is inherently uncertain. We present probabilistic support vector machines (pSVM) as a viable method for both hydrofacies delineation from sparse data and quantification of the corresponding predictive uncertainty. Our numerical experiments with synthetic data demonstrate an agreement between the probability of a pixel classifier predicted with pSVM and indicator Kriging. While the latter requires manual inference of a variogram (two‐point correlation function) from spatial observations, pSVM are highly automated and less data intensive. We also investigate the robustness of pSVM with respect to its hyper‐parameters and the number of measurements. Having investigated these features of pSVM, we deploy them to delineate, from lithological data collected in a number of wells, the spatial extent of an aquitard separating two aquifers in Southern California.
Ultra-broadband reflectionless Brewster absorber protected by reciprocity
Authors: Luo Jie , Chu Hongchen , Peng Ruwen , Wang Mu , Li Jensen , Lai Yun 
Published: April 2021

AbstractThe Brewster’s law predicts zero reflection of p-polarization on a dielectric surface at a particular angle. However, when loss is introduced into the permittivity of the dielectric, the Brewster condition breaks down and reflection unavoidably appears. In this work, we found an exception to this long-standing dilemma by creating a class of nonmagnetic anisotropic metamaterials, where anomalous Brewster effects with independently tunable absorption and refraction emerge. This loss-independent Brewster effect is bestowed by the extra degrees of freedoms introduced by anisotropy and strictly protected by the reciprocity principle. The bandwidth can cover an extremely wide spectrum from dc to optical frequencies. Two examples of reflectionless Brewster absorbers with different Brewster angles are both demonstrated to achieve large absorbance in a wide spectrum via microwave experiments. Our work extends the scope of Brewster effect to the horizon of nonmagnetic absorptive materials, which promises an unprecedented wide bandwidth for reflectionless absorption with high efficiency.
How does antenatal lifestyle affect the risk for gestational diabetes mellitus? A secondary cohort analysis from the GeliS trial
Authors: Günther Julia , Hoffmann Julia , Stecher Lynne , Spies Monika , Geyer Kristina , Raab Roxana , Meyer Dorothy , Rauh Kathrin , Hauner Hans 
Published: April 2021

Abstract
Objectives
We aimed to investigate the predictive potential of early pregnancy factors such as lifestyle, gestational weight gain (GWG) and mental well-being on gestational diabetes mellitus (GDM) beyond established risk factors.

Methods
GDM risk was investigated in the cohort of the German ‘Gesund leben in der Schwangerschaft’/healthy living in pregnancy study. Women were recruited up to the 12th week of gestation. GDM was diagnosed with a 75 g oral glucose tolerance test between the 24th and 28th weeks of gestation. Pre-pregnancy age and weight, mental health and lifestyle were assessed via questionnaires. Maternal weight was measured throughout pregnancy. Early excessive GWG was defined based on the guidelines of the Institute of Medicine. The association between several factors and the odds of developing GDM was assessed using multiple logistic regression analyses.

Results
Of 1694 included women, 10.8% developed GDM. The odds increased with pre-pregnancy BMI and age (women with obesity: 4.91, CI 3.35–7.19, p < 0.001; women aged 36–43 years: 2.84, CI 1.45–5.56, p = 0.002). Early excessive GWG, mental health and general lifestyle ratings were no significant risk factors. A 31% reduction in the odds of GDM was observed when <30% of energy was consumed from fat (OR 0.69, CI 0.49–0.96, p = 0.026). Vigorous physical activity tended to lower the odds without evidence of statistical significance (OR 0.59 per 10 MET-h/week, p = 0.076).

Conclusions
Maternal age and BMI stand out as the most important drivers of GDM. Early pregnancy factors like dietary fat content seem to be associated with GDM risk. Further evaluation is warranted before providing reliable recommendations.
Roughness and dynamics of proliferating cell fronts as a probe of cell–cell interactions
Authors: Rapin Guillaume , Caballero Nirvana , Gaponenko Iaroslav , Ziegler Benedikt , Rawleigh Audrey , Moriggi Ermanno , Giamarchi Thierry , Brown Steven A. , Paruch Patrycja 
Published: April 2021

AbstractJuxtacellular interactions play an essential but still not fully understood role in both normal tissue development and tumour invasion. Using proliferating cell fronts as a model system, we explore the effects of cell–cell interactions on the geometry and dynamics of these one-dimensional biological interfaces. We observe two distinct scaling regimes of the steady state roughness of in-vitro propagating Rat1 fibroblast cell fronts, suggesting different hierarchies of interactions at sub-cell lengthscales and at a lengthscale of 2–10 cells. Pharmacological modulation significantly affects the proliferation speed of the cell fronts, and those modulators that promote cell mobility or division also lead to the most rapid evolution of cell front roughness. By comparing our experimental observations to numerical simulations of elastic cell fronts with purely short-range interactions, we demonstrate that the interactions at few-cell lengthscales play a key role. Our methodology provides a simple framework to measure and characterise the biological effects of such interactions, and could be useful in tumour phenotyping.
3D ultrasound guided navigation system with hybrid image fusion
Authors: Iommi David , Valladares Alejandra , Figl Michael , Grahovac Marko , Fichtinger Gabor , Hummel Johann 
Published: April 2021

AbstractA prototype of a navigation system to fuse two image modalities is presented. The standard inter-modality registration is replaced with a tracker-based image registration of calibrated imaging devices. Intra-procedure transrectal US (TRUS) images were merged with pre-procedure magnetic resonance (MR) images for prostate biopsy. The registration between MR and TRUS images was performed by an additional abdominal 3D-US (ab-3D-US), which enables replacing the inter-modal MR/TRUS registration by an intra-modal ab-3D-US/3D-TRUS registration. Calibration procedures were carried out using an optical tracking system (OTS) for the pre-procedure image fusion of the ab-3D-US with the MR. Inter-modal ab-3D-US/MR image fusion was evaluated using a multi-cone phantom for the target registration error (TRE) and a prostate phantom for the Dice score and the Hausdorff distance of lesions . Finally, the pre-procedure ab- 3D-US was registered with the TRUS images and the errors for the transformation from the MR to the TRUS were determined. The TRE of the ab-3D-US/MR image registration was 1.81 mm. The Dice-score and the Hausdorff distance for ab-3D-US and MR were found to be 0.67 and 3.19 mm. The Dice score and the Hausdorff distance for TRUS and MR were 0.67 and 3.18 mm. The hybrid navigation system showed sufficient accuracy for fusion guided biopsy procedures with prostate phantoms. The system might provide intra-procedure fusion for most US-guided biopsy and ablation interventions.