bluuebunny/crossref_metadata_2025 huggingface dataset:
What is the evidence behind cancer care reviews, a primary care cancer support tool? A scoping review
Authors: Gopal Dipesh P. , Ahmad Tahania , Efstathiou Nikolaos , Guo Ping , Taylor Stephanie J. C.
Published: September 2022

Purpose

A “cancer care review” (CCR) is a conversation between a patient recently diagnosed with cancer and primary care practitioner soon after a diagnosis of cancer in the UK. This scoping review aimed to identify: methodology and validated outcome measures used to evaluate CCRs, the impact of CCRs on quality of life or symptoms, and the views of patients, their carers and healthcare professionals on CCRs.

Methods

A scoping review was performed and five databases (MEDLINE, Embase, PsychINFO, Scopus, Web of Science, Google Scholar) were searched systematically from January 2000 to March 2022.

Results

Of 4133 articles, ten met the inclusion criteria. These included surveys, qualitative research on stakeholders’ views and a small study evaluating group consultation CCRs. There were no studies on methodology to evaluate CCRs or the impact of CCRs on patient quality of life or symptoms. Some primary care professionals felt CCRs were a tick-box exercise, and that they had inadequate time to deliver care, compounded by inadequate primary-secondary care coordination and lack of expertise which was echoed by patients. Interviews with patients found few recalled CCRs and those that recalled CCRs did, did not find them particularly helpful. Partners of patients would welcome CCRs to raise personal health concerns and remain updated on patient care.

Conclusions

Further studies should identify the role that stakeholders believe they should have in CCRs, improve care coordination between primary care and secondary care and how to support caregivers.

Implications for Cancer Survivors

There is currently insufficient evidence to support the use of CCRs in general practice.
A Review on Finite-Element Simulation of Fibre Metal Laminates
Authors: Smolnicki M. , Lesiuk G. , Duda Sz. , de Jesus A. M. P.
Published: September 2022

Fibre metal laminates (FML) are layered materials consisting of both metal and reinforced composite layers. Due to numerous possibilities of configuration, constituent materials, etc., designing and testing such materials can be time- and cost-consuming. In addition to that, some parameters cannot be obtained directly from the experiment campaign. These problems are often overcome by using numerical simulation. In this article, the authors reviewed different approaches to finite element analysis of fibre metal laminates based on published articles and their own experiences. Many aspects of numerical modelling of FMLs can be similar to approaches used for classic laminates. However, in the case of fibre metal laminates, the interface between the metal and the composite layer is very relevant both in experimental and numerical regard. Approaches to modelling this interface have been widely discussed. Numerical simulations of FMLs are often complementary to experimental campaigns, so an experimental background is presented. Then, the software used in numerical analysis is discussed. In the next two chapters, both static and fatigue failure modelling are discussed including several key aspects like dimensionality of the model, approaches to the material model of constituents and holistic view of the material, level of homogenization, type of used finite elements, use of symmetry, and more. The static failure criteria used for both fibres and matrix are discussed along with different damage models for metal layers. In the chapter dedicated to adhesive interface composite—metal, different modelling strategies are discussed including cohesive element, cohesive surfaces, contact with damage formulation and usage of eXtended Finite Element Method. Also, different ways to assess the failure of this layer are described with particular attention to the Cohesive Zone Model with defined Traction–Separation Law. Furthermore, issues related to mixed-mode loading are presented. In the next chapter other aspects of numerical modelling are described like mesh sensitivity, friction, boundary conditions, steering, user-defined materials, and validation. The authors in this article try to evaluate the quality of the different approaches described based on literature review and own research.
The Defect Repair After a Giant Malignant Phyllodes Tumor Resection of Breast Using a Kiss Flap
Authors: Luo Yuwei , Zou Chang , Hu Jintao , Zhou Dongxian , Zhou Wenbin
Published: September 2022

Malignant phyllodes tumors of the breast are fairly rare and fast-growing tumors. They are not sensitive to chemotherapy or hormonal therapy. Therefore, the primary treatment for malignant phyllodes tumors is wide surgical excision. Herein, we report a case study which featured a 26-year-old woman presented with a giant malignant phyllodes tumor measuring 20 × 17 × 13 cm. In order to reduce the chance of local recurrence, treatment for these types of tumors usually involves extensive excision with at least 1 cm of surgical margins. The patient underwent mastectomy with negative surgical margins, which left a large skin defect of 25 × 15 cm. Repair of such a large skin defect is a challenge to breast surgeons. This is the first reported case in which a “kiss” flap was successfully used to repair the skin defect created after resection of a giant malignant phyllodes tumor. The kiss flap could be considered as an effective and simple method to repair large chest wall defects after resection of giant phyllodes tumors.
Proposal of a Selection Protocol for Replication of Studies in Sports and Exercise Science
Authors: Murphy Jennifer , Mesquida Cristian , Caldwell Aaron R. , Earp Brian D. , Warne Joe P.
Published: September 2022

Introduction

To improve the rigor of science, experimental evidence for scientific claims ideally needs to be replicated repeatedly with comparable analyses and new data to increase the collective confidence in the veracity of those claims. Large replication projects in psychology and cancer biology have evaluated the replicability of their fields but no collaborative effort has been undertaken in sports and exercise science. We propose to undertake such an effort here. As this is the first large replication project in this field, there is no agreed-upon protocol for selecting studies to replicate. Criticism of previous selection protocols include claims they were non-randomised and non-representative. Any selection protocol in sports and exercise science must be representative to provide an accurate estimate of replicability of the field. Our aim is to produce a protocol for selecting studies to replicate for inclusion in a large replication project in sports and exercise science.

Methods

The proposed selection protocol uses multiple inclusion and exclusion criteria for replication study selection, including: the year of publication and citation rankings, research disciplines, study types, the research question and key dependent variable, study methods and feasibility. Studies selected for replication will be stratified into pools based on instrumentation and expertise required, and will then be allocated to volunteer laboratories for replication. Replication outcomes will be assessed using a multiple inferential strategy and descriptive information will be reported regarding the final number of included and excluded studies, and original author responses to requests for raw data.
Reversible inter-particle bonding in SPH for improved simulation of friction stir welding
Authors: Shishova Elizaveta , Panzer Florian , Werz Martin , Eberhard Peter
Published: September 2022

Friction stir welding (FSW) is a complex joining process which is governed by multiple intertwined physical phenomena. Besides friction, inelastic heat generation, and heat conduction, it involves high plastic deformations, resulting in a need for a numerical method being able to handle all these. Such a scheme is smoothed particle hydrodynamics (SPH), which is a mesh-free computational technique. Absence of a fixed mesh results in the ability of the method to deal with another challenge of friction stir welding, a coalescence of initially separate workpieces into one due to bonding mechanisms. The background of this phenomenon is a transition from contact between two pieces to one continuum due to enormous changes in several material condition, such as temperature, pressure, strain, and strain rate. This work deals with a new development related to bonding, which will provide deeper understanding about the physical weld formation during FSW. The SPH framework must be extended to consider this bonding mechanism. This involves the bonding criterion definition, the interaction type change, and the SPH–SPH contact formulation. Then, the implementation is tested for two different examples, a compression test and FSW.
Emergence and Reduction in Physics
Authors: Palacios Patricia
Published: September 2022

This Element offers an overview of some of the most important debates in philosophy and physics around the topics of emergence and reduction and proposes a compatibilist view of emergence and reduction. In particular, it suggests that specific notions of emergence, which the author calls 'few-many emergence' and 'coarse-grained emergence', are compatible with 'intertheoretic reduction'. Some further issues that will be addressed concern the comparison between parts-whole emergence and few-many emergence, the emergence of effective (-field) theories, the use of infinite limits, the notion of intertheoretic reduction and the explanation of universal and cooperative behavior. Although the focus will be principally on classical phase transitions and other examples from condensed matter physics, the main aim is to draw some general conclusions on the topics of emergence and reduction that can help us understand a variety of case-studies ranging from high-energy physics to astrophysics.
A functional central limit theorem for SI processes on configuration model graphs
Authors: Khudabukhsh Wasiur R. , Woroszylo Casper , Rempała Grzegorz A. , Koeppl Heinz
Published: September 2022

We study a stochastic compartmental susceptible–infected (SI) epidemic process on a configuration model random graph with a given degree distribution over a finite time interval. We split the population of graph vertices into two compartments, namely, S and I, denoting susceptible and infected vertices, respectively. In addition to the sizes of these two compartments, we keep track of the counts of SI-edges (those connecting a susceptible and an infected vertex) and SS-edges (those connecting two susceptible vertices). We describe the dynamical process in terms of these counts and present a functional central limit theorem (FCLT) for them as the number of vertices in the random graph grows to infinity. The FCLT asserts that the counts, when appropriately scaled, converge weakly to a continuous Gaussian vector semimartingale process in the space of vector-valued càdlàg functions endowed with the Skorokhod topology. We discuss applications of the FCLT in percolation theory and in modelling the spread of computer viruses. We also provide simulation results illustrating the FCLT for some common degree distributions.
Block Exemption Regulations and Public Policy: in The Defence of BERS
Authors: BROOK Or
Published: September 2022

This article defends Block Exemption Regulations (‘BERs’) as a legitimate and effective tool for the consideration of public policy within Article 101 of the TFEU enforcement. Going against popular opinion, it argues that as the expression of a clearly defined EU-wide political consensus, BERs carry several advantages over the traditional balancing tools of Article 101(1) and (3) individual exceptions, guidelines, or balancing by the exercise of enforcement discretion. BERs offer pre-determined and transparent rules, safeguarding the independent competition authorities’ political accountability and democratic legitimacy, promoting uniformity and legal certainty, reducing compliance and enforcement costs, inviting scrutiny and debate, and fostering experimentalism and flexibility.
A journey toward an open data culture through transformation of shared data into a data resource
Authors: Kahn Scott D. , Koralova Anne
Published: September 2022

The transition to open data practices is straightforward albeit surprisingly challenging to implement largely due to cultural and policy issues. A general data sharing framework is presented along with two case studies that highlight these challenges and offer practical solutions that can be adjusted depending on the type of data collected, the country in which the study is initiated, and the prevailing research culture. Embracing the constraints imposed by data privacy considerations, especially for biomedical data, must be emphasized for data outside of the United States until data privacy law(s) are established at the Federal and/or State level.
Virasoro constraints for stable pairs on toric threefolds
Authors: Moreira Miguel , Oblomkov Alexei , Okounkov Andrei , Pandharipande Rahul
Published: September 2022

Using new explicit formulas for the stationary Gromov–Witten/Pandharipande–Thomas (

$\mathrm {GW}/{\mathrm {PT}}$

) descendent correspondence for nonsingular projective toric threefolds, we show that the correspondence intertwines the Virasoro constraints in Gromov–Witten theory for stable maps with the Virasoro constraints for stable pairs proposed in [18]. Since the Virasoro constraints in Gromov–Witten theory are known to hold in the toric case, we establish the stationary Virasoro constraints for the theory of stable pairs on toric threefolds. As a consequence, new Virasoro constraints for tautological integrals over Hilbert schemes of points on surfaces are also obtained.
Competition in Congressional Elections: Money versus Votes
Authors: THOMSEN DANIELLE M.
Published: September 2022

Competition among candidates or parties is a necessary condition for democracy. But who counts as a candidate and what counts as competition? The influence of money in American elections makes fundraising an appropriate alternative to vote totals, and it provides a new vantage point to assess the quality of electoral competition. I draw on a dataset of preelection campaign receipts to measure competition in U.S. House primaries from 1980 to 2020. When competition is measured with receipts, it looks markedly worse than vote share measures suggest. Moreover, the difference between vote share and fundraising measures is largest in open-seat primaries, or the best-case scenarios of competition. The disparity between measures is driven largely by candidates who have little chance of winning. The findings shed new light on resource disparities in elections and demonstrate that our conclusions about the quality of competition are tied to our measures.
Effect of delayed mating on reproductive performance and life-history parameters of dengue vector Aedes aegypti
Authors: Gunathilaka R. A. K. M. , Jayatunga D. P. W. , Ganehiarachchi G. A. S. M.
Published: September 2022

Dengue is a fast-spreading mosquito-borne viral disease in the world. The primary vector of the disease is Aedes aegypti of the family Culicidae. It is a container breeder. Since a vaccine or a drug has not been developed against dengue, vector control appears to be the best method so far to control dengue. The current study was conducted to determine the effect of delayed mating on fecundity, fertility, life-history parameters, and longevity of Ae. aegypti, because such information can help formulate integrated vector control strategies involving the release of sub-fertile males into the environment. During this study, mating was delayed by 0, 2, 5, and 8 days after emergence. Males and females were separated by hand at the pupal stage using the apparent size difference of the sexes. The separated pupae were kept in separate cages until emergence. When mating was delayed for 8 days, the number of eggs laid by the female declined by 38%, and the percentage number of eggs that hatched reduced by 24%. However, the percentage of larval mortality, duration of the larval and pupal periods, and adult longevity were not significantly affected. The current results indicate that delayed mating has a negative effect on the reproductive performance of vector mosquitoes.
Evaluation of artificial diets based on different legume seeds on the nutritional physiology and digestive function ofHelicoverpa armigera(Hübner)
Authors: Jafari Hasan , Hemmati Seyed Ali , Habibpour Behzad
Published: September 2022

Helicoverpa armigera(Hübner) is considered a serious agricultural pest worldwide. We explored the effects of artificial diets containing ten legumes, including broad beans (Shadan, Feyz, Saraziri, Barekat, and Mahta cultivars), white kidney beans (Dehghan cultivar), red kidney beans (Goli cultivar), common beans (Khomein cultivar), cowpeas (Mashhad and Arabi cultivars) on the feeding responses ofH. armigeraby quantifying specific primary and secondary metabolites in the studied legumes and determining larval nutritional indices and digestive enzyme activities. The results showed that the highest efficiency of conversion of digested food (ECD) and relative growth rate values (RGR) of whole larval instars were obtained in the Dehghan and Goli cultivars. However, the lowest values of ECD and RGR were observed in the larvae fed on the Khomein and Mahta cultivars. The highest proteolytic and amylolytic activities of larvae were found on the Dehghan and Mashhad cultivars. The highest and lowest values of standardized insect-growth index and index of plant quality were observed in larvae feeding on the Dehghan and Khomein cultivars, respectively. Additionally, significant variations in phytochemical metabolites were recorded among the studied legume cultivars. Significant negative or positive correlations were also found between feeding characteristics and enzymatic activities ofH. armigerawith the biochemical composition of the studied legumes. The cluster analysis results revealed that artificial diets containing Mahta and Khomein cultivars were unsuitable forH. armigera, and can be used as candidates for integrated pest management programs or for screening insect inhibitors to produce genetically modified pest-resistant plants.
TRIUMPH IN OVID: BETWEEN LITERARY TRADITION AND AUGUSTAN PROPAGANDA
Authors: Gagliardi Paola
Published: September 2022

The Roman triumph is treated by the Augustan poets from a literary and political perspective. Ovid in particular gives it original and ambiguous features. The topic is often presented as the prediction of a triumph, a point of view perhaps inherited from Gallus. Propertius innovates from the Gallan original, and Ovid uses Propertius’ treatment for further innovations. In his exile poetry, Ovid makes further substantial changes to the use of the triumph, which raises pointed questions as to the poet's sincerity in his apparent praise of Augustus and Tiberius.
DOMESTIC COMEDY AND THE CLASSICAL GREEK HOUSE
Authors: Wright Matthew
Published: September 2022

Greek comedy, especially New Comedy, contains many incidental descriptions of domestic interiors. This article argues that such descriptions constitute a valuable and overlooked source of evidence for historians of the classical Greek house; they are also of interest to literary critics in that they contribute to the thematic and conceptual meaning of the plays. The article presents and discusses all the surviving comic evidence for houses, including many previously neglected comic fragments, as well as a key scene from Menander'sSamiawhich is more detailed than any other surviving literary depiction.
Latin Literature
Authors: Walter Anke
Published: September 2022

There have been very many exciting books on Latin literature in the past six months; here is at least a small selection. J. N. Adams presents an impressive volume on asyndeton in Latin literature. Based on a thorough examination of different types of asyndeta, with a special focus on asyndeta bimembria (‘asyndeta with two members’), Adams discusses ‘grammatical’ and semantic types of asyndeta, as well as their characteristic structural patterns, followed by a discussion of genres and texts, from laws and prayers over asyndeta from texts of the early Republic to the Augustan period. For historiography, Tacitus’ Histories and Annals are included as well. In the course of his discussion, Adams debunks some long-held beliefs about Latin asyndeta, which, he shows, are not predominantly a feature of sacral or legal language, as has often been claimed. He also argues that asyndeton, rather than evoking speed or rapidity, may instead invite a reading that is slow and deliberate, with meaningful pauses between the individual words (that most famous Latin asyndeton, which is printed on the dust jacket and discussed on 77–8, veni, vidi, vici [‘I came, I saw, I conquered’], works very well as an example).
Art and Archaeology
Authors: Hales Shelley
Published: September 2022

In preparation for my first review, I have had the pleasure to read books that showcase the current breadth of contemporary study of ancient visual and material cultures, from subjects as diverse as canine skeletons in Athens, Egyptian papyri, and medieval mosques, and approaches ranging from the close analysis of pigment on Roman marble sculpture to the exploration of ‘viewsheds’ on the acropolis.
Philosophy
Authors: Bryan Jenny
Published: September 2022

The eleventh volume of the Studia Praesocratica series presents a welcome challenge to scholars of early Greek philosophy to get to grips with the exciting and valuable material found in the Herculanean testimonia. These texts provide a resource that has often been overlooked even by those seeking relatively recently to present comprehensive collections of texts and evidence on the Presocratics, and Christian Vassallo has done a great service in producing this extensive collection of textual evidence, along with English translations and commentary. As Vassallo makes clear in his introduction and individual commentary sections, a close study of the reception of early Greek philosophy in the Epicurean tradition throws up exciting new perspectives that may well provide a basis to challenge standard narratives, particularly with respect to early epistemology and theology. The work is explicitly designed to be of value not just to papyrologists but to scholars of early Greek philosophy too. With this in mind, Vassallo presents the evidence separately for each individual Presocratic, with separate commentary sections aiming to put the evidence into its Epicurean context. He extends the coverage of his already monumental work by including a useful appendix on ‘Diogenes of Oinoanda's Criticism of Presocratic Philosophy’ (595–645). Any scholar of early Greek philosophy seeking to undertake a comprehensive survey of the textual evidence will be grateful to Vassallo for the work he has done and for how accessible he has rendered these texts.
General
Authors: Petrovic Ivana
Published: September 2022

Delphi, one of the most spectacular sites in Europe and an immensely important oracular site of Ancient Greece is the theme of an edited volume originating in a conference organized in 2017. Unlike most conference proceedings, this volume is truly thorough in terms of breadth of coverage, and it is also beautifully produced and equipped with very useful indices which greatly facilitate orientation. There are twenty-three chapters in German and English, divided into six sections: archaeology, the functioning of the oracle, the role of Delphi in Greek history, the representation of the oracle in archaic and classical literature, its role in the theological and philosophical debates of the Roman period, and a brief section on its modern reception. Anyone interested in Delphi will find something useful in this volume.
Judgment in the Fourth-Century BCE Athenian Courts as Anti-Tragedy: Demosthenes's On the Crown
Authors: Street Ella
Published: September 2022

In 330 BCE, before a jury of 501 Athenian citizens, the statesman Demosthenes delivered what would become his most famous court speech, On the Crown. Commentators have called the speech “tragic” owing to the litigant's unusual appropriation of tropes from Attic tragedy to make his case. I offer an alternative reading of Demosthenes's speech that rests upon an alternative approach to theorizing democratic judgment. I argue that the rhetorical force and political significance of Demosthenes's metaphors, linguistic expressions and ideas depend upon the institutional setting in which they were delivered. This is because within each institutional site, a specific political practice of judgment is taking place that structures the reception of and response to ideas and images. Demosthenes's speech is in fact “anti-tragic” and reflects the democratic practice for which it was created.
The peasant and the nation plot: a distant reading of the Romanian rural novel from the first half of the twentieth century
Authors: Borza Cosmin , Gârdan Daiana , Modoc Emanuel
Published: September 2022

Our article conducts a critical reassessment of one of the most influential cultural myths in Eastern Europe throughout the nineteenth and twentieth centuries: the nationalist definition of peasantry as embodying the quintessence of the nation. In order to evaluate the imagological scope and ideological implications engendered by this so-called ‘people-nation myth’, we focus on the Romanian culture, whom we consider fully representative for the Eastern European context. More exactly, our study employs a distant reading of the Romanian rural novel from the first half of the twentieth century, precisely the literary subgenre supposed to reflect the coalescence between the peasantry and the nation. By analysing the co-occurrences in these novels between words belonging to the vocabularies of nation and rurality, we aim at showing that – contrary to traditional historiographic consensus – nation building has less to do with language or ethnicity, and much more to do with social emancipation.
Rare combination in an infant patient: trisomy 7p and tetralogy of fallot
Authors: Guvenc Osman , Saygi Murat , Duman Tugba Akin
Published: September 2022

This case report presents an infant patient with the association of trisomy 7p and tetralogy of fallot (TEF). Patients diagnosed with trisomy 7p should certainly be scheduled for an echocardiographic exam and be scanned for any CHDs that may accompany it. The CHDs that most frequently accompany this syndrome include atrial septal defect, ventricular septal defect, and patent ductus arteriosis. Yet, it should be known that TEF may also be present, albeit rarely.
Response of Cloud and Precipitation Properties to Seeding at a Supercooled Cloud‐Top Layer
Authors: Li Dejun , Zhao Chuanfeng , Yue Zhiguo , Liu Cao , Sun Yuwen , Cohen Jason Blake
Published: September 2022

To accurately identify ideal operating conditions for scientific cloud seeding and to collect evidence of the effects of seeding, a set of three flights, with figure‐8‐like paths, was designed for supercooled liquid water detection. These flights were conducted near the cloud top before seeding, during seeding, and upon re‐entry. Using both in situ aircraft and satellite remote sensing observations, a comprehensive analysis was conducted to understand the response of cloud properties to seeding within supercooled cloud tops. Satellite observations showed clear icing cloud tracks after seeding with abundant supercooled liquid water near the cloud top. Radar observations confirmed enhanced radar reflectivity echoes in cloud‐seeding regions. For regions cloud seeded with supercooled liquid water, the liquid droplets quickly froze into ice crystals, which further grew into large ice crystals via vapor deposition, riming, and collision‐coalescence processes. With these processes, large ice crystals formed and rapidly fell downward, causing the sinking of cloud tops and precipitation to fall to the ground. By contrast, there were no such phenomena in the regions without supercooled liquid water or in those regions with supercooled liquid, but otherwise without seeding. In addition, radar reflectivity echoes quickly decreased in all regions without seeding. The evolutionary characteristics of radar echoes and in situ observed cloud and precipitation properties suggest that the response of cloud microphysical characteristics to seeding varies with time and location due to various seeding potentials, leading to different formation conditions of both cloud‐top icing and cloud tracks.
Occurrence of Surface Phytoplankton Bloom as the Kuroshio Current Passes an Island
Authors: Gao Jie , Guo Xinyu , Yoshie Naoki , Ding Xiaokun
Published: September 2022

When the Kuroshio Current passes by islands, a surface phytoplankton bloom is often observed in the wake of the island. To investigate its causes, a typical example from the Kuroshio region, in which a geostrophic current (1 m/s) passes around a cylindrical island, was simulated using a three‐dimensional biogeochemical model. At the surface, concentrations of dissolved inorganic nitrogen, phytoplankton, and zooplankton increased in the wake. In the euphotic zone, phytoplankton mainly grew in cyclonic eddies, where nutrients originated from the deep ocean. The sum of biogeochemical processes related to the phytoplankton increased immediately behind the island and had a maximum of 0.045 mmol N m−3 day−1 at 50 km downstream, which gradually decreased to a low value further from the island. Among four types of phytoplankton, the pico‐phytoplankton‐dominated the bloom behind the island, which was also observed in the Tokara Strait. A tracer run indicated that the hydrodynamic processes directly contributed to 50% of the increase in the phytoplankton concentration on the surface in summer and a decrease in winter, depending on the appearance of a subsurface chlorophyll‐a maximum. With an increase in island size, the size of eddies, distance between eddies, and surface phytoplankton concentration also increased. For the first 300 km behind the island, no obvious zooplankton growth was observed, but a box eNEMURO result indicated that trophic transfer from phytoplankton to zooplankton emerged further away, which provides a possible explanation of Kuroshio Paradox.
Elevated Post K‐Pg Export Productivity in the Gulf of Mexico and Caribbean
Authors: Lowery Christopher M. , Bralower Timothy J.
Published: September 2022

The global heterogeneity in export productivity after the Cretaceous‐Paleogene (K‐Pg) mass extinction is well documented, with some sites showing no change on geologic timescales, some demonstrating sustained decline, and a few showing a somewhat surprising increase. However, observational data come from sites so widespread that a key outstanding question is the geographic scale of changes in export productivity, and whether similar environments (e.g., open ocean gyres) responded similarly or whether heterogeneity is unrelated to environment. To address this, we developed three new Ba/Ti export productivity records from sites in the Gulf of Mexico and Caribbean which, combined with published data from a fourth site in the Chicxulub Crater itself, allow us to reconstruct regional changes in post K‐Pg export productivity for the first time. We find that, on a regional scale, export productivity change was homogenous, with all four sites showing a ∼300 Kyr period of elevated export production just after the boundary, followed by a longer period of decline. Interestingly, this interval of elevated export production appears to coincide with the post K‐Pg global micrite layer, which is thought to at least partially have been produced by blooms of carbonate‐producing cyanobacteria and other picophytoplankton. Global comparison of sites shows that elevated export productivity appears to have been most common in oligotrophic gyres, which suggests that changing plankton ecology evidenced by the micrite layer altered the biological pump, leading to a temporary increase in export production in these settings.
Predictive Soft Computing Methods for Building Digital Rock Models Verified by Positron Emission Tomography Experiments
Authors: Ebadi Mohammad , Armstrong Ryan T. , Mostaghimi Peyman , Wang Ying Da , Alqahtani Naif , Amirian Tammy , James Lesley Anne , Parmar Arvind , Zahra David , Hamze Hasar , Koroteev Dmitry
Published: September 2022

The influence of core‐scale heterogeneity on continuum‐scale flow and laboratory measurements are not well understood. To address this issue, we propose a fully automated workflow based on soft computing to characterize the heterogeneous flow properties of cores for predictive continuum‐scale models. While the proposed AI‐based workflow inherently has no trained knowledge of rock petrophysical properties, our results demonstrate that image features and morphological properties provide sufficient measures for petrophysical classification. Micro X‐ray computed tomography (μxCT) image features were extracted from full core plug images by using a Convolutional Neural Network and Minkowski functional measurements. The features were then classified into specific classes using Principal Component Analysis followed by K‐means clustering. Next, the petrophysical properties of each class were evaluated using pore‐scale simulations to substantiate that unique classes were identified. The μxCT image was then up‐scaled to a continuum‐scale grid based on the defined classes. Last, simulation results were evaluated against real‐time flooding data monitored by Positron Emission Tomography. Both homogeneous sandstone and heterogeneous carbonate were tested. Simulation and experimental saturation profiles compared well, demonstrating that the workflow provided high‐fidelity characterization. Overall, we provided a novel workflow to build digital rock models in a fully automated way to better understand the impacts of heterogeneity on flow.
Simplified Automatic Atmospheric Correction for THEMIS Infrared Data
Authors: Ye Cheng , Pan Cong , Edwards Christopher S. , Rogers A. Deanne
Published: September 2022

Thermal infrared spectral data from the Thermal Emission Imaging System (THEMIS) on Mars Odyssey can provide diagnostic information to characterize Martian surface compositions. Accurately isolating the atmospheric contribution from the thermal radiance of THEMIS data is essential for surface mineralogy analysis. In this work, we present improved semi‐automatic and fully automated tools to simplify the traditional atmospheric correction method for THEMIS data. Both methods use the Thermal Emission Spectrometer surface emissivity data but in different ways. These two methods are applied to several locations that have been well documented in previous studies, to assess their capability of determining surface spectral features. The fully automatic method demonstrates its simplicity, viability, and robustness by which more consistent results have been generated for the same area across multiple THEMIS images and for areas with large topographic gradients. The tools developed in this work will broaden the utilization of THEMIS infrared spectral data to the wider planetary science community.
Using ARMAX Models to Determine the Drivers of 40–150 keV GOES Electron Fluxes
Authors: Simms L. E. , Ganushkina N. Yu. , van de Kamp M. , Liemohn M. W. , Dubyagin S.
Published: September 2022

We investigate the drivers of 40–150 keV hourly electron flux at geostationary orbit (GOES 13) using autoregressive moving average transfer functions (ARMAX) multiple regression models which remove the confounding effect of diurnal cyclicity and allow assessment of each parameter independently. By taking logs of the variables, we create nonlinear models. While many factors show high correlation with flux in single variable analysis (substorms, ULF waves, solar wind velocity (V), pressure (P), number density (N) and electric field (Ey), IMF Bz, Kp, and SymH), ARMAX models show substorms are the dominant influence at 40–75 keV and over 20–12 MLT, with little difference seen between disturbed and quiet periods. The Ey influence is positive post‐midnight, negative post‐noon. Pressure shows a negative influence, strongest at 150 keV. ULF waves are a more modest influence than suggested by single variable correlation. Kp and SymH show little effect when other variables are included. Using path analysis, we calculate the summed direct and indirect influences through the driving of intermediate parameters. Pressure shows a summed direct and indirect influence nearly half that of the direct substorm effect. N, V, and Bz, as indirect drivers, are equally influential. While simple correlation or neural networks can be used for flux prediction, neither can effectively identify drivers. Instead, consideration of physical influences, removing cycles that artificially inflate correlations, and controlling the effects of other parameters gives a clearer picture of which are most influential in this system.
On the Moments of Probability Distribution Function of Amplitude Scintillation in the Polar Region
Authors: Meziane K. , Hamza A. M. , Jayachandran P. T.
Published: September 2022

The distortions seen in the Global Navigation Satellite Systems radio signal caused by ionospheric irregularities in the polar region are examined through the lens of probability distributions of fluctuations in the recorded scintillation signals. The first four moments of the probability distribution function (PDF) of the amplitude scintillation are computed and analyzed for 106 events collected at Pond Inlet station [Magnetic Coordinates = (80.0°N, 2.6°E)]. As a starting point, the background variation level is investigated using similar computations carried out with about 400 30‐s window segments. The resulting distribution for the skewness (third moment) and the kurtosis (fourth moment) strongly indicate that the background fluctuations are nearly Gaussian; given the computed variances, the Rayleigh distribution hypothesis is ruled out. In the case where scintillation is present, we found that the skewness distribution nearly overlaps with the background while the excess kurtosis strongly indicates a departure from normality. More precisely, the PDF appear mostly symmetric and leptokurtic (positive kurtosis K) and exhibit, in some cases, significant flatness (K ∼ 1). These results reveal that the analyzed scintillations are statistically consistent with stationarity and therefore vanishing skewness. Moreover, the empirical moments are compared with those derived from probability densities referred in the literature regarding scintillations. We have found that none of the log‐normal, Nakagami, Rician and α–μ distributions account for the analyzed data. The generalized Gaussian distribution with a shape parameter 1 < β < 2 seems the most probable and the most adequate to account for the results.
Multi‐Fluid MHD Simulations of Europa's Plasma Interaction: Effects of Variation in Europa's Atmosphere
Authors: Harris Camilla D. K. , Jia Xianzhe , Slavin James A.
Published: September 2022

Europa's plasma interaction is inextricably coupled to its O2 atmosphere by the chemical processes that generate plasma from the atmosphere and the sputtering of magnetospheric plasma against Europa's ice to generate O2. Observations of Europa's atmosphere admit a range of possible densities and spatial distributions (Hall et al., 1998, https://doi.org/10.1086/305604). To better understand this system, we must characterize how different possible configurations of the atmosphere affect the 3D magnetic fields and bulk plasma properties near Europa. To accomplish this, we conducted a parameter study using a multi‐fluid magnetohydrodynamic model for Europa's plasma interaction (Harris et al., 2021, https://doi.org/10.1029/2020ja028888). We varied parameters of Europa's atmosphere, as well as the conditions of Jupiter's magnetosphere, over 18 simulations. As the scale height and density of Europa's atmosphere increase, the extent and density of the ionosphere increase as well, generating strong magnetic fields that shield Europa's surface from impinging plasma on the trailing hemisphere. We also calculate the precipitation rate of magnetospheric plasma onto Europa's surface. As the O2 column density increased from (1–2.5) × 1014 cm−2, the precipitation rate decreased sharply then leveled off at 2 × 1024 ions/s for simulations with low magnetospheric plasma density and 6.4 × 1024 ions/s for simulations with high magnetospheric plasma density. These results indicate that the coupling between Europa's plasma populations and its atmosphere leads to feedback that limits increases in the ionosphere density.
Spectral Properties of Whistler‐Mode Waves in the Vicinity of the Moon: A Statistical Study With ARTEMIS
Authors: Sawaguchi W. , Harada Y. , Kurita S. , Nakamura S.
Published: September 2022

We present statistical analyses of whistler‐mode waves observed by Acceleration, Reconnection, and Turbulence and Electrodynamics of the Moon's Interaction with the Sun (ARTEMIS). Although some observations showed that the lunar whistler‐mode waves have similarities to the terrestrial chorus emissions, it remains unknown whether the banded structure typically seen in chorus is common to the lunar waves. In this study, we automatically detected whistler‐mode waves from 9 years of ARTEMIS data and classified them into four types of spectral shapes: lower band only, upper band only, banded, and no‐gap. We first show that a magnetic connection to the lunar surface is a dominant factor in the wave generation. The occurrence rate of whistler‐mode waves is 10 times larger on the magnetic field line connected to the Moon. Then we compared the field line connected events according to the position of the Moon and the condition of the field‐line foot point (day/night and existence of magnetic anomalies). The results show that (a) almost no banded event is observed in any circumstances, suggesting that generation mechanisms for the two band structure of the terrestrial chorus are largely ineffective around the Moon and (b) the wave occurrence rate depends on the foot point conditions, presumably affected by electrostatic/magnetic reflections deforming the velocity distribution of the resonant electrons. Thus, our results provide implications for the two band structure formation and new insights into fundamental processes of the Moon‐plasma interaction.
Mechanisms for Zonal Mean Wind Responses in the Thermosphere to Doubled CO2 Concentration
Authors: Kogure Masaru , Liu Huixin , Tao Chihiro
Published: September 2022

We explored mechanisms for the thermospheric zonal mean wind responses to doubled CO2 concentration through investigating the zonal mean momentum balance in the thermosphere using GAIA model simulations in June. The analysis shows that ion drag, molecular viscosity, and meridional pressure gradient force vary 3–20 times more than the other forces due to the doubled CO2 concentration. The three forces strongly attenuate each other; consequently, the increase in zonal mean zonal ion drag dominantly strengthens the southward wind (∼15 ms−1 at maximum) in the northern (summer) hemisphere and latitudes north of 35S. This strengthened ion drag was attributed to increased ion density/relative velocity between ions and neutral particles in the northern/southern hemisphere. Southward of 35, the zonal pressure gradient force and the meridional advection of zonal wind strengthen the southward wind by 4–12 ms−1 in total. On the other hand, the zonal wind is mainly altered by increased meridional pressure gradient force (∼15 ms−1 at maximum) caused by a latitudinally asymmetric response of the thermosphere density to increasing CO2 concentration. Our results suggest that the increased ion density in the northern hemisphere is the underlying trigger for the wind responses to increasing CO2 concentration. Furthermore, we show that the meridional advection was mainly (∼70%) due to that of the DW1 tidal component.
Electron Heat Fluxes Generated by Intense Whistler Waves at the Upper Ionospheric Altitudes
Authors: Khazanov George V. , Ma Qianli , Chu Mike
Published: September 2022

Magnetospheric whistler waves, chorus and hiss, can't provide the resonance heating of the core electron plasma population. However, these whistler‐mode branches, can implicitly participate in the heating processes of the core plasma thermal electron population by triggering the electron precipitation over a broad energy range from the magnetosphere and subsequent atmospheric ionization processes leading to the production of superthermal electron population. These superthermal electrons play a large role in the magnetosphere‐ionosphere‐atmosphere energy interplay with participation of both magnetically conjugate hemispheres, and their Coulomb interaction with background magnetospheric thermal electrons. Using strong hiss and chorus wave events measured by the Van Allen Probes and SuperThermal Electron Transport code, we evaluate the formation of electron heat fluxes at the upper ionospheric altitudes and discuss their consequences on the formation of electron temperature. It is found that chorus and hiss waves that initiate the precipitation of magnetospheric electrons with energies below 30 keV and the follow‐up production of secondary electrons play an important role in the energy balance of ionosphere‐magnetosphere system.
Sub‐Decadal Volcanic Tsunamis Due To Submarine Trapdoor Faulting at Sumisu Caldera in the Izu–Bonin Arc
Authors: Sandanbata Osamu , Watada Shingo , Satake Kenji , Kanamori Hiroo , Rivera Luis , Zhan Zhongwen
Published: September 2022

The main cause of tsunamis is large subduction zone earthquakes with seismic magnitudes Mw > 7, but submarine volcanic processes can also generate tsunamis. At the submarine Sumisu caldera in the Izu–Bonin arc, moderate‐sized earthquakes with Mw < 6 occur almost once a decade and cause meter‐scale tsunamis. The source mechanism of the volcanic earthquakes is poorly understood. Here we use tsunami and seismic data from the recent 2015 event to show that abrupt uplift of the submarine caldera, with a large brittle rupture of the ring fault system due to overpressure in its magma reservoir, caused the earthquake and tsunami. This submarine trapdoor faulting mechanism can efficiently generate tsunamis due to large vertical seafloor displacements, but it inefficiently radiates long‐period seismic waves. Similar seismic radiation patterns and tsunami waveforms due to repeated earthquakes indicate that continuous magma supply into the caldera induces quasi‐regular trapdoor faulting. This mechanism of tsunami generation by submarine trapdoor faulting underscores the need to monitor submarine calderas for robust assessment of tsunami hazards.
Strong Modulation of Human‐Activity‐Induced Weekend Effect in Urban Heat Island by Surface Morphology and Weather Conditions
Authors: Wang Chunli , Zhan Wenfeng , Liu Xue , Liu Zihan , Miao Shiqi , Du Huilin , Li Jiufeng , Wang Chenguang , Li Long , Yue Wenze
Published: September 2022

Abstract

The weekend effect of the canopy urban heat island (UHI) has been long recognized. However, how the UHI weekend effect (UWE) varies with the hour of day and season of year is still unclear; it remains largely unknown on how the UWE is regulated by various controls. To address these knowledge gaps, here we took Beijing, China as an example and investigated the detailed spatiotemporal UWE patterns and the major regulators with a 3‐year data set of in‐situ surface air temperatures. Our results indicate that the annual ΔIc (the UHI intensity difference on weekends and weekdays) is stronger at night (−0.13 ± 0.12 K; mean ± 1 STD) than during the day (−0.05 ± 0.10 K); at the seasonal scale, ΔIc reaches the strongest in winter (−0.14 K) and the weakest in summer (−0.05 K). The ΔIc is strongly regulated by anthropogenic heat flux (AHF), evidenced by a quasi‐synchronous diurnal pattern between ΔIc and ΔAHF (i.e., the AHF difference between weekends and weekdays). The nighttime ΔIc is intensely modulated by urban morphology, with a stronger modulation by the landscape shape index than by the distance of the station from the urban center. Weather conditions also modulate the ΔIc, with the ΔIc weakening with the increase of cloud coverage and wind speed level. We consider these findings deepen our understanding of the weekly rhythms of UHI as well as the underlying modulators.