bluuebunny/crossref_metadata_2025 huggingface dataset:
The Collector Hypothesis
Authors: Sorokowski Piotr , Luty Jerzy , Małecki Wojciech , Roberts Craig S. , Kowal Marta , Davies Stephen
Published: November 2024

Human fascination with art has deep evolutionary roots, yet its role remains a puzzle for evolutionary theory. Although its widespread presence across cultures suggests a potential adaptive function, determining its evolutionary origins requires more comprehensive evidence beyond mere universality or assumed survival benefits. This paper introduces and tests the Collector Hypothesis, which suggests that artworks serve as indicators of collectors’ surplus wealth and social status, offering greater benefits to collectors than to artists in mating and reproductive contexts. Our study among Indigenous Papuan communities provides preliminary support for the Collector Hypothesis, indicating that, compared to artists, collectors are perceived as having higher social status and greater attractiveness to women. These findings provide unique insights into Papuan communities and contribute to the ongoing discussion about art’s adaptive significance of art by suggesting that artistic capacities may benefit not only creators but also those who accumulate and display art. Further research in diverse cultural contexts is needed for a comprehensive understanding of this interplay.
Bio-irrigation Promotes Reactive Phosphorus Recycling in an Oxidized Sedimentary Environment
Authors: Benelli Sara , Janas Urszula , Magri Monia , Kendzierska Halina , Arroyave Gómez Diana Marcela , Bartoli Marco
Published: November 2024

Bio-irrigation by burrowing macrofauna regulates benthic functioning via direct and indirect effects on sediment properties, microbial activities, oxygen dynamics, and organic matter and nutrient turnover. The effects of macrofauna bio-irrigation on benthic nitrogen cycling have been thoroughly investigated, whereas those on phosphorus (P) are comparatively understudied. This is surprising as such effects contribute to sediment oxidation and have a large potential to regulate P mobility and increase P retention. Dissolved oxygen (O2) and inorganic phosphorus (DIP) fluxes, pore water chemistry (DIPpw, Fe[II]pw, Mn[II]pw, pHpw, and oxidation–reduction potential (ORPpw)), and solid-phase Fe(III) pools were measured in reconstructed sediments without or with surface (the amphipod Corophium volutator) and deep (the polychaete Alitta succinea) burrowing macrofauna. Sediments and burrowing macrofauna were collected from the Goro Lagoon (Po River Delta, Italy) in April 2022. Measurements were carried out after a 2-week preincubation to allow sediment conditioning by bioturbators (e.g., burrow construction, bio-irrigation, burrow wall oxidation, steady chemical gradients within sediments and between pore and bottom waters). ORPpw analysis suggested that bio-irrigated sediments were less reduced, and Fe solid-phase analysis suggested a tendency towards an increase in the Fe(III) pool in deep bio-irrigated sediments. Both bioturbators stimulated O2 fluxes and DIP recycling (by a factor of ~ 2), and halved DIPpw, Fe(II)pw, and Mn(II)pw concentrations. The amphipod contributed to DIP fluxes via direct excretion, whereas polychaete excretion was negligible. Polychaetes contributed to DIP fluxes by ventilation of deep burrows within DIP-rich pore water. Bio-irrigation by both burrowers simultaneously promoted higher DIP recycling and sediment oxidation, ensuring the mobilization of a limiting nutrient and preventing the accumulation of reduced chemical species in the surface sediment.
Radiotherapy in patients with brain metastases with and without concomitant immunotherapy: comparison of patient outcome and neurotoxicity
Authors: Elyan Natalie , Schwenkenbecher Philipp , Grote-Levi Lea , Becker Jan-Niklas , Merten Roland , Christiansen Hans , Skripuletz Thomas , Steinmann Diana , Möhn Nora
Published: November 2024

Background/Aim

Recently, immune checkpoint inhibitors (ICI) have been added to the treatment of brain metastases. While combining radiotherapy and ICI can enhance therapeutic effects, it might also increase the risk of severe autoimmune adverse events. This retrospective study aims to compare treatment responses and neurotoxicity in patients treated with radiotherapy alone versus those receiving a combination of radiotherapy and ICI.

Patients and methods

All patients with brain metastases who received radiotherapy at Hannover Medical School from 2017 to 2019 were included. The medical reports of all study participants were evaluated. Patients who received radiotherapy alone and those who received a combination of radiation and ICI were compared.

Results

A total of 248 patients were analyzed, with the most common tumor types being non-small cell lung cancer (NSCLC) and malignant melanoma. Half of the patients received whole-brain radiotherapy (WBRT) and the other half stereotactic radiotherapy (SRT). Of these, 29 patients received concurrent immunotherapy and radiotherapy, 30 completed immunotherapy before radiotherapy, and 29 started ICI after completing radiotherapy. Two cases lacked information on the duration of immunotherapy. Overall survival post-initial tumor diagnosis within the total cohort was 52 months, with significantly worse survival for patients with multiple brain metastases (p = 0.020). No significant differences in survival or incidence of neurological adverse events were observed between patients with or without ICI.

Conclusion

Combining radiotherapy and ICI did not significantly increase neurotoxicity or improve survival in this cohort, though the heterogeneity of the subgroups limits the generalizability of these findings.
Artificial Intelligence in Landscape Ecology: Recent Advances, Perspectives, and Opportunities
Authors: Frazier Amy E. , Song Lei
Published: November 2024

Purpose of Review

Artificial intelligence (AI) is disrupting science and discovery across disciplines, offering new modes of inquiry that are changing how questions are asked and answered and upsetting established norms. In this paper, we review the state of the art of AI in landscape ecology and offer six areas of opportunity for landscape ecologists to capitalize on AI tools moving forward. These areas include geospatial AI (GeoAI), geometric AI, Explainable AI (xAI), generative AI (GenAI), Natural Language Processing (NLP), and robotics.

Recent Findings

Landscape ecology has a long history of using AI, notably machine learning methods for image classification tasks, agent-based modeling, and species distribution modeling but also knowledge representation and automated reasoning for landscape generation and spatial planning. Methods have become more diverse and complex in recent years, with a new generation of AI-based tools rapidly emerging. These new tools have potential to improve how landscape ecologists map, measure, and model landscape patterns and processes as well as improve the explainability of model outputs.

There are many untapped opportunities for landscape ecologists to leverage emerging AI-based tools in research and practice including generating virtual landscapes for simulating processes such as wildfires and leveraging natural language processing to generate new insights from text data. Regardless of the application, researchers using AI tools must also consider the ethical implications of data and algorithmic biases and critically assess how these methods can be used responsibly.
Engine strip and build lab: a practical approach to learning gas turbine engines
Authors: Anselmi Palma E. , Kissoon S. , Hann G. , Pilidis P. , Pachidis V.
Published: November 2024

The world is currently undergoing a technological transformation with numerous innovative concepts emerging. This shift is driven by remarkable advancements in artificial intelligence and the urgent need for decarbonisation. With this comes a growing demand for skilled engineers who can actively contribute at any stage within the life cycle of a product. This can be the generation of new concepts at low Technology Readiness Levels or contributing actively to their development and operational safety. This paper explores the integration of a 1-day practical activity to reinforce theoretical concepts learned within a classroom-based environment. Small groups of students were given the opportunity of engaging with a small helicopter engine (Rolls-Royce Gnome engine) through the disassembly and reassembly of the exhaust and power turbine section while following the manufacturer’s manual and ensuring industrial norms for safe practice. This hands-on activity included an introduction to tooling, a Gnome familiarisation activity, and an introduction to inspection techniques. Based on the feedback recorded, the students experienced a notable improvement in their basic understanding by effectively reinforcing knowledge acquired within the classroom through active engagement with an actual gas turbine engine.
U.S. climate-smart agricultural and forestry incentives: from offsets to clean energy credits
Authors: O’Hara Jeffrey K.
Published: November 2024

Climate-smart agricultural and forestry (CSAF) practices prevent greenhouse gas emissions from occurring or increase carbon sequestration. I examine how the development of U.S. CSAF incentives shifted from offset markets to biofuel regulations over time. My perspective is informed by two professional roles I had in developing these standards. First, as an economist at the Chicago Climate Exchange, I developed CSAF offset protocols between 2007 and 2010. Second, between 2022 and 2024, I was an economist at the U.S. Department of Agriculture (USDA) when USDA developed a climate-smart agriculture pilot protocol for the sustainable aviation fuel blender’s tax credit. Twenty years ago, there were no U.S. biofuel mandates and CSAF incentives were conceptualized as occurring through offset markets. I explain how, in contrast to cap-and-trade programs, greenhouse gas emissions from agricultural and forestry practices are already included in the baseline of biofuel regulations. This implies that additionality issues, which have impeded the development of CSAF offset standards, are not as applicable to biofuel programs. Specifically, I examine the development of agricultural soil carbon, livestock digester, and forest carbon protocols as case studies. I conclude by discussing how CSAF crediting may evolve in the future.
International Law in Gaza: Belligerent Intent and Provisional Measures
Authors: Dannenbaum Tom , Dill Janina
Published: November 2024

On October 7, 2023, Palestinian armed groups, chiefly Hamas's armed wing, breached the fence around the Gaza strip and launched attacks on Israeli territory. Over several hours, Palestinian fighters killed 1,269 people, mostly civilians, engaged in sexual violence and torture, and took 253 hostages. The same day, Israel's Prime Minister Benjamin Netanyahu declared, “Israel is at war,” and the Israel Defense Forces (IDF) launched air strikes and later a ground invasion of Gaza. In the eleven months since, Palestinian groups have continued to hold, mistreat, and kill hostages and launched rockets into Israel's population centers. Meanwhile, the IDF has killed an estimated forty-one thousand people in Gaza, mostly civilians, engaged in sexual violence and torture of Palestinian detainees, damaged or destroyed most of the food, water, and medical infrastructure, and restricted humanitarian access, with dire consequences. Civilian casualty experts argue the death toll (which excludes the likely greater number killed “indirectly” through disease and deprivation) far exceeds what we have come to expect from contemporary military campaigns. Both sides have committed violations of International Humanitarian Law (IHL), too many to list individually.
Facilitating multidisciplinary working groups in translational research: Strategies to promote cross-center collaboration and sustain the Cancer Center Cessation Initiative Consortium
Authors: Minion Mara , Rolland Betsy
Published: November 2024

As funding for large translational research consortia increases across the National Institutes of Health (NIH), focused working groups provide an opportunity to leverage the power of unique networks to conduct high-impact science and offer a strategy for building collaborative infrastructure to sustain networks long-term. This sustainment leverages the existing NIH investments, amplifying the impact and creating conditions for future innovative translational research. However, few resources exist that detail practical strategies for establishing and sustaining working groups in consortia. Here, we describe how the Coordinating Center for the National Cancer Institute-funded Cancer Center Cessation Initiative (C3I) utilized principles derived from the Science of Team Science to develop replicable strategies for building and sustaining an effective working group-led consortium. These strategies include continually engaging community members in strategic planning, prioritizing diversity in leadership and membership, creating multi-level opportunities for leadership and participation, providing intensive community management and facilitation, and incentivizing projects that support the consortium sustainment. When assessing the impact of these interventions through qualitative exit interviews, four key themes emerged: through the C3I working group consortium, members co-created new dissemination products, gained new insights and innovations, enhanced local program implementation, and invested in cross-network collaboration to support sustained engagement in the initiative.
Pendulum swings rather than paradigm shifts: Southeast Asia’s securitisations and the global war on terror
Authors: Chang Jun Yan , Jenne Nicole
Published: November 2024

Two decades into the ‘war on terror’, attention is rapidly shifting away from terrorism. Increasing geopolitical competition between the US and China and Russia’s war in Ukraine prompted talk about a watershed moment in global politics marked by a return of great power competition. To what extent has this paradigm shift – from terrorism to ‘traditional’ considerations of military security from external invasion – taken place in Southeast Asia? Building on securitisation theory, this article argues that the war on terror did not mark a universal historical-political period as it is often presented. In Southeast Asia, so-called non-traditional threats such as terrorism have concerned states since their independence. Therefore, Southeast Asia continued to prioritise ‘traditional’ security threats alongside ‘non-traditional’ ones in what is commonly described as its comprehensive approach to security. Consequently, when the ‘return to geopolitics’ began influencing military doctrine and preparation amongst NATO countries, a similar shift was absent in Southeast Asia. We argue that the region has seen varied emphases on non-traditional versus traditional security threats but did not experience the paradigm shift suggested by the US-dominated security narrative. Southeast Asia’s comprehensive security constellation underscores the need for a more pluralistic and eclectic approach to the study of international relations.
Surfaces of section for geodesic flows of closed surfaces
Authors: CONTRERAS GONZALO , KNIEPER GERHARD , MAZZUCCHELLI MARCO , SCHULZ BENJAMIN H.
Published: November 2024

We prove several results concerning the existence of surfaces of section for the geodesic flows of closed orientable Riemannian surfaces. The surfaces of section

$\Sigma $

that we construct are either Birkhoff sections, which means that they intersect every sufficiently long orbit segment of the geodesic flow, or at least they have some hyperbolic components in

$\partial \Sigma $

as limit sets of the orbits of the geodesic flow that do not return to

$\Sigma $

. In order to prove these theorems, we provide a study of configurations of simple closed geodesics of closed orientable Riemannian surfaces, which may have independent interest. Our arguments are based on the curve shortening flow.
Financing white rule: How Luxembourg became a banker for the Belgian Congo and Apartheid South Africa
Authors: Weeks Samuel
Published: November 2024

In this article, I offer a historical analysis of how bankers in Luxembourg came to be important service providers to borrowers in the Belgian Congo and Apartheid South Africa. I demonstrate how a series of unique political and cultural factors linking Luxembourg and these two (neo)colonial regimes account for the financial activities that developed between the three jurisdictions. As such, I show that officials in the Belgian Congo and Apartheid South Africa were able to count on their Luxembourg-based bankers for a variety of finance-related services, including the provision of Eurocurrency loans and the formation of offshore companies. In doing so, the article contributes to a body of literature in the social sciences of finance that has grown significantly in recent years: on the imperial and neocolonial basis of the contemporary global financial system.
Filtered partial differential equations: a robust surrogate constraint in physics-informed deep learning framework
Authors: Zhang Dashan , Chen Yuntian , Chen Shiyi
Published: November 2024

Embedding physical knowledge into neural network (NN) training has been a hot topic. However, when facing the complex real world, most of the existing methods still strongly rely on the quantity and quality of observation data. Furthermore, the NNs often struggle to converge when the solution to the real equation is very complex. Inspired by large eddy simulation in computational fluid dynamics, we propose an improved method based on filtering. We analysed the causes of the difficulties in physics-informed machine learning, and proposed a surrogate constraint (filtered partial differential equation, FPDE) of the original physical equations to reduce the influence of noisy and sparse observation data. In the noise and sparsity experiment, the proposed FPDE models (which are optimized by FPDE constraints) have better robustness than the conventional PDE models. Experiments demonstrate that the FPDE model can obtain the same quality solution with 100 % higher noise and 12 % quantity of observation data of the baseline. Besides, two groups of real measurement data are used to show the FPDE improvements in real cases. The final results show that the FPDE still gives more physically reasonable solutions when facing the incomplete equation problem and the extremely sparse and high-noise conditions. The proposed FPDE constraint is helpful for merging real-world experimental data into physics-informed training, and it works effectively in two real-world experiments: simulating cell movement in scratches and blood velocity in vessels.
Impact of spanwise rotation on flow separation and recovery behind a bulge in channel flows
Authors: Savino Benjamin S. , Wu Wen
Published: November 2024

Direct numerical simulations of spanwise-rotating turbulent channel flow with a parabolic bump on the bottom wall are employed to investigate the effects of rotation on flow separation. Four rotation rates,

$Ro_b := 2\varOmega H/U_b = \pm 0.42$

,

$\pm$

1.0, are compared with the non-rotating scenario. The mild adverse pressure gradient induced by the lee side of the bump allows for a variable pressure-induced separation. The separation region is reduced (increased) when the bump is on the anti-cyclonic (cyclonic) side of the channel, compared with the non-rotating separation. The total drag is reduced in all rotating cases. Through several mechanisms, rotation alters the onset of separation, reattachment and wake recovery. The mean momentum deficit is found to be the key. A physical interpretation of the ratio between the system rotation and mean shear vorticity,

$S:=\varOmega /\varOmega _s$

, provides the mechanisms regarding stability thresholds

$S=-0.5$

and

$-$

1. The rotation effects are explained accordingly, with reference to the dynamics of several flow structures. For anti-cyclonic separation, particularly, the interaction between the Taylor–Görtler vortices and hairpin vortices of wall-bounded turbulence is proven to be responsible for the breakdown of the separating shear layer. A generalized argument is made regarding the essential role of near-wall deceleration and resultant ejection of enhanced hairpin vortices in destabilizing an anti-cyclonic flow. This mechanism is anticipated to have broad impacts on other applications in analogy to rotating shear flows, such as thermal convection and boundary layers over concave walls.
Is more always better? The returns to alcohol by volume—Evidence from the Austrian “Spirits Trophy 2023”
Authors: Frick Bernd , Kaimann Daniel
Published: November 2024

Hedonic models that seek to explain the observable variation in wine and beer prices have so far included alcohol by volume (ABV) only as a control variable without paying much attention to the magnitude of the coefficient and without questioning the implicit assumption that the impact of ABV on bottle prices is indeed linear. Using data from the “Austrian Spirits Trophy 2023,” we find the relationship between ABV and bottle prices to be nonlinear, with statistically significant effects observed for linear, squared, and cubic terms of alcohol content. Moreover, we find expert evaluations of spirits to demonstrate a nonlinear relationship with ABV too.
Structural controls on the Triassic Main Buntsandstein sediment distribution in the Roer Valley Graben, the Netherlands
Authors: Cecchetti Emilio , Martinius Allard W. , Bruna Pierre-Olivier , Bender Annelies , Abels Hemmo A.
Published: November 2024

The lower Triassic Main Buntsandstein Subgroup represents a promising, but high-risk geothermal play in the Netherlands. Although the gross thickness in boreholes locally exceeds 200 m, the spatial distribution, geometries and preservation of these sedimentary units remained uncertain due to the lack of seismic data with sufficient resolution and the sparse borehole network. This creates uncertainty in the quantification of the aquifer dimensions that is essential for the planning of geothermal operations.

In this study, seismic interpretation and 2D palinspastic restoration of new and reprocessed seismic data were conducted and combined with borehole data to assess the tectonic evolution of the Roer Valley Graben in the southeastern Netherlands and its control on the spatial distribution of the Main Buntsandstein Subgroup sediments. Our results show that the central and southern parts of the Roer Valley Graben were active depocenters in the Early to Middle Triassic times dominated by fluvial sandstone deposition, providing important play elements for prospective leads on geothermal exploration. The northern part of the basin was a more marginal area where mostly fine-grained sediments were deposited. To the northwest, differential subsidence resulted in the development of areas where the Buntsandstein thickness is reduced to ∼150 m.

After deposition, the Main Buntsandstein sediments were compartmentalised by faulting related to post-depositional tectonic activity, locally reducing the lateral extent of the geothermal target areas down to 1–2 km in a ∼NE–SW direction. On the platform areas adjacent to the Roer Valley Graben and to the southeast, Jurassic sediments are largely absent and the Main Buntsandstein sediments are present at depths shallower than 2 km. These platforms are promising targets for further investigation, as the relatively shallow burial depths, compared to the central part of the Graben, may have contributed to the preservation of more favourable reservoir properties.
“Back to the Kitchen”: Corruption Charges Against Women Heads of Government
Authors: Schramm Madison , Stark Alexandra , Crasnic Loriana
Published: November 2024

While much of the scholarship on gender and corruption suggests that women in political office are, or are perceived to be, less corrupt than men, in just the past few years corruption accusations against Brazil's Dilma Rousseff and South Korea's Park Geun-hye have made headlines and led to their impeachment. In this article, we argue women heads of government are actually more likely to be charged with corruption due to pervasive beliefs that women, by their very presence, corrupt public office. Using cross-national data, we first demonstrate that women executives are significantly more likely to be formally accused of corruption than their male counterparts. We then present case studies of Brazilian President Rousseff and Turkish Prime Minister Çiller to demonstrate the powerful role of gendered discourse in motivating suspicion and inflaming elite and public sentiment and thereby driving corruption charges. These findings make a substantial contribution to the literature on gender, leadership and the politics of corruption.
Kinetic instabilities in two-isotopic plasma in the gas-dynamic trap magnetic mirror
Authors: Shmigelsky Evgeniy A. , Meyster Andrey K. , Chernoshtanov Ivan S. , Lizunov Andrej A. , Solomakhin Alexander L. , Yakovlev Dmitry V.
Published: November 2024

A fusion neutron source (FNS) based on the gas-dynamic trap (GDT, Budker Institute, Novosibirsk) is considered for confinement of two-species plasma heated by neutral beam injection in a regime where the fast ion distribution function is far from Maxwellian. Kinetic instabilities are expected to develop in this regime, and in this paper we investigate the ion-cyclotron instability evolving in moderate densities of pure hydrogen and mixed deuterium–hydrogen target plasmas. The properties of the studied unstable mode, such as its azimuthal wavenumbers, propagation direction and its being affected by changes in the bulk plasma density and composition, allow us to identify it as the drift cyclotron loss cone (DCLC) instability. This mode scatters fast ions and thereby leads to drops in diamagnetic flux signals and increases longitudinal energy and particle losses, with the average energy of the lost ions estimated to be far above the temperature of warm Maxwellian ions. Our interpretation is that the unstable wave grows due to interaction with the fast ions located near the loss cone in the velocity space and scatters them. Applying the method of suppressing the DCLC instability by filling the loss cone with warm plasma, we have determined the values of plasma density and deuterium percentage that allow us to suppress the DCLC instability in the GDT. These findings justify using mixed bulk plasmas in fusion neutron source operation.
Aonchotheca annulosa and Aonchotheca murissylvatici, which is which? A reappraisal of the gastrointestinal Aonchotheca (Nematoda: Capillariidae) species common in wood mice and bank voles
Authors: Behnke Jerzy M. , Jackson Joseph A.
Published: November 2024

Wood mice (Apodemus sylvaticus) and bank voles (Myodes glareolus) are often employed as natural study models in infectious disease ecology. Yet the identities of some elements of their parasite fauna have been subject to long-standing confusion. One instance of this relates to 2 nominal species of the capillariid nematode genus Aonchotheca: Aonchotheca annulosa (Dujardin, 1845) and A. murissylvatici (Diesing, 1851). Through literature review, analysis of recorded host- and site-specificity and tracing of taxonomic precedence, it is possible to confirm that A. annulosa is a valid species with a spicule c. 1000 microns long, a small intestinal site of infection and a wide host range centred in murine rodents (with A. sylvaticus the most common host). On the other hand, tracing the provenance of A. murissylavtici through to the works of the early naturalists reveals it is best assigned as a nomen nudum (lacking sufficient establishing description) or a junior synonym of A. annulosa and does not have precedence for the other Aonchotheca morphotype commonly found in Eurasian rodents. The first description consonant with this other morphotype, which has a short spicule (200–250 microns in length) and occurs primarily in the stomach of bank voles and other cricetids, was as Capillaria halli by Kalantarian in 1924. We thus recommend the suppression of A. murissyvatici in favour of Aonchotheca halli (Kalantarian, 1924) for this gastric-specialist short-spicule morphotype, particularly as the use of the A. murissylvatici name and its variants has previously been associated with substantial inconsistency and misidentification with A. annulosa.
Method of moments estimation for the superposition of square-root diffusions
Authors: Wu Yan-Feng , Hu Jian-Qiang
Published: November 2024

We consider the problem of parameter estimation for the superposition of square-root diffusions. We first derive the explicit formulas for the moments and auto-covariances based on which we develop our moment estimators. We then establish a central limit theorem for the estimators with the explicit formulas for the asymptotic covariance matrix. Finally, we conduct numerical experiments to validate our method.
The Contested Value of Life
Authors: Holm Søren
Published: November 2024

Putting a specific value on human life is important in many contexts and forms part of the basis for many political, administrative, commercial, and personal decisions. Sometimes, the value is set explicitly, sometimes even in monetary terms, but much more often, it is set implicitly through a decision that allows us to calculate the valuation of a life implicit in a certain rule or a certain resource allocation. We also value lives in what looks like a completely different way when we evaluate whether a particular life is being or has been lived well. Both of these ways of valuing are done from an outside or third-person perspective, but there is also a third way of valuing a life which is from the first-person perspective, and which essentially asks how much my life is worth to me. Is there any connection between these different ways of valuing life, and if so what is the connection between them? This paper provides an account of John Harris’ analysis of the value of life and discusses whether it can bridge the gap between first-person and third-person evaluations of the value of life, and whether it can do so in a way that still allows for resource allocation decisions to be made in health care and other sectors.
Aggregate: fast, accurate, and flexible approximation of compound probability distributions
Authors: Mildenhall Stephen
Published: November 2024

Aggregate implements an efficient fast Fourier transform (FFT)-based algorithm to approximate compound probability distributions. Leveraging FFT-based methods offers advantages over recursion and simulation-based approaches, providing speed and accuracy to otherwise time-consuming calculations. Combining user-friendly features and an expressive domain-specific language called DecL, Aggregate enables practitioners and nonprogrammers to work with complex distributions effortlessly. The software verifies the accuracy of its FFT-based numerical approximations by comparing their first three moments to those calculated analytically from the specified frequency and severity. This moment-based validation, combined with carefully chosen default parameters, allows users without in-depth knowledge of the underlying algorithm to be confident in the results. Aggregate supports a wide range of frequency and severity distributions, policy limits and deductibles, and reinsurance structures and has applications in pricing, reserving, risk management, teaching, and research. It is written in Python.
Hybrid package integration strategy for silicon ICs operating beyond 200 GHz
Authors: Ovalle-Taylor David A. , Gianesello Frédéric , Luxey Cyril , Ducournau Guillaume
Published: November 2024

This paper proposes an innovative hybrid package integration strategy compatible with silicon-based technologies. It is evaluated beyond 200 GHz by the integration of a WR3 back-to-back waveguide-to-suspended stripline transition designed in BiCMOS technology, relying on metallic split-block package and organic laminate substrate. Simulated insertion loss below 3 dB is observed in the 220–320 GHz frequency band, competing with reported traditional solutions using III–V substrates. The achieved performances lead to promising perspectives for low-cost silicon packaging solutions beyond 200 GHz.
Towards adaptive resilience for the future of integrated water systems planning
Authors: Mijic Ana , Dobson Barnaby , Liu Leyang
Published: November 2024

The integrated water systems (IWSs) concept involves managing water quantity and quality through dynamic interactions. This paper reviews the terrestrial water cycle, focusing on resilience and adaptive planning (AP) approaches within IWSs. We examine how integrating these approaches can improve IWS management and planning, addressing their inherent complexities. Using a performance-based resilience definition, we consider the system’s ability to absorb, recover from and adapt to adverse events. The AP focuses on flexible management pathways for uncertain future conditions. Although both resilience and AP aim to enhance water system performance and address uncertainties, they differ in their assessment and implementation approaches. We propose an Adaptive Resilience Planning (ARP) framework that merges both approaches. The ARP uses resilience metrics for performance assessment and incorporates AP’s methods for conceptualising uncertainties and optimising management portfolios. Implementing the ARP framework raises four research questions: (1) holistic characterisation of uncertainties and options in IWSs, (2) using resilience metrics for IWS adaptation, (3) balancing trade-offs among management goals through optimal portfolio selection and (4) monitoring portfolio performance and uncertainties for informed adaptation. The ARP framework offers a structured method for dynamic and adaptive resilience planning, enhancing IWS management’s responsiveness to evolving challenges.
Weed communities of snap bean fields in the United States
Authors: Pavlovic Pavle , Colquhoun Jed B. , Korres Nicholas E. , Liu Rui , Lowry Carolyn J. , Peachey Ed , Scott Barbara , Sosnoskie Lynn M. , VanGessel Mark J. , Williams Martin M.
Published: November 2024

Weeds are one of the greatest challenges to snap bean (Phaseolus vulgaris L.) production. Anecdotal observation posits certain species frequently escape the weed management system by the time of crop harvest, hereafter called residual weeds. The objectives of this work were to (1) quantify the residual weed community in snap bean grown for processing across the major growing regions in the United States and (2) investigate linkages between the density of residual weeds and their contributions to weed canopy cover. In surveys of 358 fields across the Northwest (NW), Midwest (MW), and Northeast (NE), residual weeds were observed in 95% of the fields. While a total of 109 species or species-groups were identified, one to three species dominated the residual weed community of individual fields in most cases. It was not uncommon to have >10 weeds m−2 with a weed canopy covering >5% of the field’s surface area. Some of the most abundant and problematic species or species-groups escaping control included amaranth species such as smooth pigweed (Amaranthus hybridus L.), Palmer amaranth (Amaranthus palmeri S. Watson), redroot pigweed (Amaranthus retroflexus L.), and waterhemp [Amaranthus tuberculatus (Moq.) Sauer]; common lambsquarters (Chenopodium album L.); large crabgrass [Digitaria sanguinalis (L.) Scop.]; and ivyleaf morningglory (Ipomoea hederacea Jacq.). Emerging threats include hophornbeam copperleaf (Acalypha ostryifolia Riddell) in the MW and sharppoint fluvellin [Kickxia elatine (L.) Dumort.] in the NW. Beyond crop losses due to weed interference, the weed canopy at harvest poses a risk to contaminating snap bean products with foreign material. Random forest modeling predicts the residual weed canopy is dominated by C. album, D. sanguinalis, carpetweed (Mollugo verticillata L.), I. hederacea, amaranth species, and A. ostryifolia. This is the first quantitative report on the weed community escaping control in U.S. snap bean production.
Improved management of Italian ryegrass (Lolium perenne ssp. multiflorum) with mixtures of tiafenacil and ACCase or glutamine synthetase inhibitors
Authors: Miranda Joshua W.A. , Moretti Marcelo L.
Published: November 2024

Herbicide-resistant Italian ryegrass [Lolium perenne L. ssp. multiflorum (Lam.) Husnot] is a significant problem in multiple cropping systems because of its rapid growth, open pollination, prolific seed production, and multiple cases of resistance worldwide, except to protoporphyrinogen oxidase (PPO) inhibitors. This research evaluated tiafenacil, a new PPO inhibitor, in mixtures with glutamine synthetase- or acetyl-CoA carboxylase (ACCase)-inhibiting herbicides to manage resistant L. perenne ssp. multiflorum populations. Tiafenacil efficacy against L. perenne ssp. multiflorum was growth stage dependent, with increased efficacy at earlier stages in greenhouse studies. The LD90 was 41.06 g ai ha−1 at BBCH 23 and increased to 9.0-fold at BBCH 33. Field studies indicated that changes in carrier volume did not affect tiafenacil’s efficacy; the highest tested rate of tiafenacil (75 g ai ha−1) reduced L. perenne ssp. multiflorum inflorescence weight by 50% to 90%. Mixtures of tiafenacil and glufosinate (1,150 g ai ha−1) improved L. perenne ssp. multiflorum control (+24% to 43%) and reduced inflorescence weight (+15% to 34%), particularly at the highest tested rates (50 and 75 g ai ha−1), suggesting synergistic effects based on Colby’s test. Tiafenacil with ACCase inhibitors improved L. perenne ssp. multiflorum control (+19% to 49%) and inflorescence weight reduction (+8% to 13%). These mixtures exhibited an additive effect when combined with fluazifop and a synergistic effect with clethodim. Herbicide mixtures and application strategies are critical to effective L. perenne ssp. multiflorum management. Tiafenacil, especially when used with glufosinate or ACCase inhibitors, offers an effective solution to L. perenne ssp. multiflorum management and is a strategic tool against herbicide resistance, as resistance to PPO inhibitors has not evolved. Further research should assess practices to ensure the long-term viability of these mixtures for resistance management.
Unveiling Decoupled Social‐Ecological Networks of Great Lake Basin: An Ecosystem Services Approach
Authors: Peng Jian , Zhang Zimo , Lin Yifan , Tang Hui , Xu Zihan , Zheng Huining
Published: November 2024

With the backdrop of climate change and human activities, the complex interactions within the social‐ecological system have brought unprecedented challenges to sustainable development. However, there is still a lack of quantitative methods for analyzing the dynamics of the social‐ecological system. Here, we introduced a social‐ecological network approach incorporating supply and demand of ecosystem services (ESs) as bridges and took the Dongting Lake basin in China as the research area. From 2000 to 2020, we discovered that the number of linkages among meteorological elements and ESs supply decreased from 5 to 0. Along with this, the network density (from 26 to 22) and network connectivity (from 43 to 28) showed the decoupling trends of the social‐ecological networks. These results implied the decreasing impacts of meteorological elements and the importance of considering human activities impacts. Based on the average degree analysis of the networks, proportions of cultivated land and forest land were key for ESs supply (both around 0.900), while population density and artificial land proportion were important for the ESs demand (around 0.850 and 0.800, respectively). More management practices are required because these elements have significant impacts on the supply‐demand alignments of multiple ESs. We further illustrated the spatial supply‐demand mismatches of ESs, along with the negative effects of urbanization. This study highlighted the advantage of integrating the ecosystems services approach into the social‐ecological network analysis, and provided policy insights serving for sustainable development of the typical great lake basins.
Impacts of California Wildfires on CO2 and Other Trace Gases
Authors: Karandana Gamalathge Thishan Dharshana , Tai Nolan , Jiang Xun , Wang Xinyue , Li Liming , Yung Yuk L.
Published: November 2024

Wildfires have broad impacts on the atmosphere, ecology, and society. This study leverages satellite data and chemistry‐transport models to analyze the impact of wildfires on trace gases in California during the August‐October periods of 2018, 2019, and 2020. During these months, Southern California experiences minimal precipitation, leading to a high Vapor Pressure Deficit, which results in decreased photosynthetic activities. This reduction, combined with increased biomass burning, causes a rise in CO2 concentrations. Increased CO and CH4 levels are also seen in TROPOMI retrievals tied to the increase in biomass burning. The CarbonTracker model captures these elevated CO2 concentrations, though with a reduced amplitude of increased CO2. Similarly, the GEOS‐Chem model successfully simulates high CO levels but underestimates the observed enhancements. These findings will improve the understanding of fire's influence on trace gases and refine future numerical models on surface emissions and transport.
Development of Super Plasma Bubbles During the 7 September 2017 Geomagnetic Storm Revealed by Coupled GITM‐SAMI3 Simulations
Authors: Wang Zihan , Zou Shasha , Huba J. D. , Ridley Aaron
Published: November 2024

In this study, we used the coupled GITM (Global Ionosphere Thermosphere Model)‐SAMI3 (Sami3 is Also a Model of the Ionosphere) model to simulate the response of the ionosphere‐thermosphere system during the 7 September 2017 geomagnetic storm. In the simulation results, a super equatorial plasma bubble (SEPB) formed and rose to around magnetic latitude (MLAT). This is attributed to a penetration electric field (PEF) that enhances the growth rate of generalized Rayleigh‐Taylor instability (GRTI), while traveling atmospheric/ionospheric disturbances act as a seeding mechanism.
Simultaneous Observations of Mirror Mode Structures and Electromagnetic Ion Cyclotron Waves in the Earth's Outer Magnetosphere
Authors: Liu Xiaoman , Yu Jiang , Chen Zuzheng , Wang Jing , Ren Aojun , Li Liuyuan , Cui Jun , Cao Jinbin
Published: November 2024

Electromagnetic ion cyclotron (EMIC) waves and mirror mode structures respectively produced by the cyclotron and mirror instabilities are both generated by the temperature anisotropy of ions. However, whether these two instabilities can grow simultaneously in the magnetosphere is still unclear, as well as how they distribute if they can. In this paper, we first report an event of simultaneous observation of mirror mode structures and EMIC waves and then perform a statistical survey in the magnetosphere based on the measurements from Magnetospheric Multiscale (MMS) satellites. The event is observed in the duskside (MLT ∼ 18 hr) of Earth's outer magnetosphere (L ∼ 12) near the magnetic equator (MLAT ∼ 12°). The further linear instability analyses demonstrate that mirror mode structures and EMIC waves can be simultaneously and locally generated in the magnetosphere. The statistical results show that simultaneous mirror mode structures and EMIC waves are mainly distributed in the dawnside and duskside of the outer magnetosphere with slightly larger numbers in the dawnside but no significant differences in the proton number density, and plasma beta, proton temperature anisotropy, power‐weighted wave frequency, and wave normal angle.
Brittle Regime Slip Partitioned Damage and Deformation Mechanisms Along the Eastern Denali Fault Zone in Southwestern Yukon
Authors: Caine Jonathan Saul , Orlandini Omero F. , Vollmer Frederick W. , Lowers Heather A.
Published: November 2024

Rare bedrock exposures of the eastern Denali fault zone in southwestern Yukon allow for the measurement, sampling, and analyses of brittle regime fault slip data and deformation mechanisms to explore relations to far field, oblique plate motions. Host rock lithologies and associated slip surfaces show episodic damage zone‐related deformation and calcite ± hematite ± chlorite related hydrothermal fluid flow. This regional scale network of asymmetric fault damage is spatially and kinematically linked to a discrete and narrow fault core. Fault network observations, orientations, slip data, and strain inversions document a slip partitioned strike‐slip fault system with locally and mutually overprinting strike‐, oblique‐, and dip‐slip components. Microstructural analyses reveal crystal plastic and co‐seismic brittle deformation mechanisms active in a narrow range of upper crustal temperature, pressure, fluid, and chemical conditions. The net damage related slip is not exclusively formed by a single kinematic system, but rather a fully partitioned, time integrated system likely operative for much of the fault's brittle regime evolution temporally constrained by previously published thermochronometric data. Although the fault slip data was collected from outcrop‐scale exposures at sites tens of kilometers apart, results show remarkable correlation between fault kinematics and plate motions along the ∼580 km long eastern Denali fault segment. End member, subhorizontal, northeast directed reverse and north directed dextral strike slip fault strain axes closely reflect relative plate motion interactions over at least the last 30 m.y. and act as a proxy for far‐field stresses compatible with the kinematics of the damage zone network.
Emergence of Potential Anadromous Arctic Charr (Salvelinus alpinus) Habitats in the Svalbard Archipelago After the End of the Little Ice Age
Authors: Roncoroni M.
Published: November 2024

Glaciers in the Svalbard Archipelago are retreating rapidly in response to climate change. This retreat leads to the alteration of the hydrological and thermal regimes of freshwater ecosystems. In this delicate context, existing anadromous Arctic charr (Salvelinus alpinus) populations are at severe risk and might disappear from the archipelago. However, the retreat of glaciers also promotes the formation of new lake systems that might be suitable for colonization by anadromous Arctic charr. These systems may provide a substantial opportunity for the establishment of new populations of anadromous charr, potentially buffering the decline in existing systems. To date, there is a lack of information on the number of recently deglaciated lake systems that have emerged since the end of the Little Ice Age (ca. 1920) that might be suitable for charr colonization. Therefore, the goal of this paper is to provide an initial assessment of the number of these lakes. To this end, and in accordance with previously published research, this study assesses whether a recently deglaciated lake system is potentially open to colonization based on gradient, river length, and lake surface area. Depending on the applied threshold (four in total), up to 24 lake systems are classified as potentially open to colonization by anadromous Arctic charr, with Spitsbergen emerging as a potential hotspot for colonization. The findings of this paper might serve as basis for new studies and for implementing proactive management and conservation strategies to protect anadromous charr populations.
Amantadine against glioma via ROS-mediated apoptosis and autophagy arrest
Authors: Luo Yusong , Liu Ruolan , Zhang He , Wang Hongyu , Yin Hang , Tian Guopeng , Wang Bo , Yan Yunji , Ding Zilin , Dai Junqiang , Niu Liang , Yuan Guoqiang , Pan Yawen
Published: November 2024

Glioma is a common primary nervous system malignant tumor with poor overall cure rate and low survival rate, yet successful treatment still remains a challenge. Here, we demonstrated that amantadine (AMT) exhibits the powerful anti-glioma effect by promoting apoptosis and autophagy in vivo and in vitro. Mechanistically, amantadine induces a large amount of reactive oxygen species (ROS) accumulation in glioma cells, and then triggers apoptosis by destroying mitochondria. In addition, amantadine induces the initiation of autophagy and inhibits the fusion of autophagosome and lysosome, consequently performing an anti-glioma role. Taken together, our findings suggest that amantadine could be a promising anti-glioma drug that inhibits glioma cells by inducing apoptosis and autophagy, which may provide a novel potential treatment option for patients.