bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Local Cauchy Integral Formula for Slice-Regular Functions
Authors: Perotti Alessandro 
Published: May 2023

AbstractWe prove a local Cauchy-type integral formula for slice-regular functions. The formula is obtained as a corollary of a general integral representation formula where the integration is performed on the boundary of an open subset of the quaternionic space, with no requirement of axial symmetry. As a step towards the proof, we provide a decomposition of a slice-regular function as a combination of two axially monogenic functions.
Cumulative damage and bearing capacity attenuation law of anchorage structure interface under cyclic loading and unloading
Authors: Wang Peng , Guo Yuan , Cui Guangzhen , Zhang Nong , Xu Xingliang , Yu Chenghan , Li Aoran , Kan Jiaguang 
Published: May 2023

AbstractThe specimens of anchorage structures bonded by different anchoring materials are prepared to study the damage and reduced safety and reliability caused by the cyclic loading and unloading stress to the roadway anchorage structure. Using Fiber Bragg grating, acoustic emission monitoring and ANSYS, the anchorage structures’ bearing properties, interface failure characteristics, overall failure mode and internal influence mechanism are obtained under cyclic loading and unloading stress path. Results show that the cracks at the anchorage interface would develop and expand rapidly under this path, and the cumulative damage to anchorage structures is primarily caused by repeated residual deformation, periodic opening-expanding-closing of internal cracks, and impact vibration resulted from large-scale cyclic loading and unloading. Compared with the results under single pull-out stress, the ultimate loads of the anchorage structures bonded by H and S materials are reduced by 30.8% and 45.5%, respectively, and the radii of inner damage are increased by 1.64 and 1.67 times, respectively, showing a significant decrease in the bearing capacity of anchorage structures under cyclic loading and unloading. The anchorage structures bonded by these two materials have more prominent brittleness and weaker post-peak bearing capacity than those bonded by resin anchoring agent. Therefore, the balance between bonding strength and brittle-plastic extension characteristics shall be fully considered for the selection of anchoring materials. Five failure modes of anchorage structure are summarized: failure of the bolt-anchoring material interface, failure of the anchoring material-surrounding rock interface, fracture of the anchoring material, fracture of the bolt, and integral bulging of the anchorage structure. Besides, under the action of stress disturbance, the anchorage structure of bolt group can mobilize adjacent bolts to restrain the continuous damage and bearing capacity attenuation of the middle bolt, thus guaranteeing the overall safety and stability.
Global sensitivity analysis of 3D printed material with binder jet technology by using surrogate modeling and polynomial chaos expansion
Authors: Del Giudice Lorenzo , Marelli Stefano , Sudret Bruno , Vassiliou Michalis F. 
Published: May 2023

AbstractThe mechanical properties of 3D printed materials produced with additive manufacturing depend on the printing process, which is controlled by several tuning parameters. This paper focuses on Binder Jet technology and studies the influence of printing resolution, activator percentage, droplet mass, and printing speed on the compressive and flexural strength, as well as on the Young’s modulus of the bulk printed material. As the number of tests required using a one factor at a time approach is not time efficient, a Design of Experiments approach was applied and optimal points in the 4-dimensional parameter space were selected. Then Sobol’ sensitivity indices were calculated for each mechanical property through polynomial chaos expansion. We found that the mechanical properties are primarily controlled by the binder content of the bulk material, namely printing resolution and droplet mass. A smaller dependence on the activator percentage was also found. The printing speed does not affect the mechanical properties studied. In parallel, curing of the specimens at 80–115 °C for 30–120 min increases their strength.
The Intramolecular Povarov Tool in the Construction of Fused Nitrogen-Containing Heterocycles
Authors: Masdeu Carme , de los Santos Jesús M. , Palacios Francisco , Alonso Concepción 
Published: May 2023

AbstractNitrogen heterocycles are part of the structure of natural products and agents with important biological activity, such as antiviral, antibiotic, and antitumor drugs. For this reason, heterocyclic compounds are one of today’s most desirable synthetic targets and the Povarov reaction is a powerful synthetic tool for the construction of highly functionalized heterocyclic systems. This process involves an aromatic amine, a carbonyl compound, and an olefin or acetylene to give rise to the formation of a nitrogen-containing heterocycle. This review illustrates advances in the synthetic aspects of the intramolecular Povarov reaction for the construction of intricate nitrogen-containing polyheterocyclic compounds. This original review presents research done in this field, with references to important works by internationally relevant research groups on this current topic, covering the literature from 1992 to 2022. The intramolecular Povarov reactions are described here according to the key processes involved, using different combinations of aromatic or heteroaromatic amines, and aliphatic, aromatic, or heteroaromatic aldehydes. Some catalytic reactions promoted by transition metals are detailed, as well as the oxidative Povarov reaction and some asymmetric intramolecular Povarov processes.
The Miocene record of the Betic Cordillera uplift in Los Guájares valley (Granada province, S Spain)
Authors: Alberjón-Peñas Tomás , Braga Juan C. , Aguirre Julio , Flórez Paola 
Published: May 2023

AbstractThe Los Guájares valley is located about 35 km south of Granada in the Internal Zones of the Betic Cordillera. The Miocene deposits in this area consist of six sedimentary units separated by unconformities, which are exposed in small and laterally discontinuous outcrops overlying metamorphic rocks of the Alpujárride Complex. The lowest unit comprises upper Serravallian marls with planktonic foraminifera filling neptunian dykes and covering Triassic dolomitic marbles of the Alpujárride Complex. These marls reflect deep marine deposition on the Betic basement under a local extensional regime. Uplift of the region led to emergence and deposition of continental red alluvial-fan conglomerates and foothill breccias. The overlying unit, a shoreline conglomerate with small oyster banks, indicates relative sea-level rise. Shallow-marine conditions continued during the deposition of the following unit, early Tortonian in age, which consists of calcareous sandstones with hermatypic corals. Small patch reefs developed in the overlying unit composed of sandy limestones with corals (Porites, Tarbellastraea, Thegioastraea) and oysters, and sandy limestones with coralline algae in the most distal areas. The coral reefs in Los Guájares and some coral heads in Albuñuelas, a near locality, are the only record of early Tortonian coral buildups in the Mediterranean. The last marine unit comprises lower Tortonian conglomerates, sandstones and siltstones accumulated in the front of a small delta. Oyster banks and concentrations of Turritelines suggest high nutrient levels in the delta-front paleoenvironments. The Los Guájares valley area emerged afterwards, following the onset of a compressional geodynamic regime in the central Betic Cordillera and since the early Tortonian only small bodies of foothill and alluvial-fan deposits formed in a predominantly erosional context.
An app for apples: Citizen-led mapping of fire blight in Central Asia
Authors: Kurz Mirjam , Sultangaziev Ormon , Szalatnay David , Sodonbekov Ishenbai , Naizabayeva Dinara A. , Milikbekova Muqaddas , Akbarsho Solimshoh , Bobushova Saykal , Doolotkeldieva Tinatin , Rezzonico Fabio , Smits Theo H. M. 
Published: May 2023

AbstractFire blight, caused by the bacterial pathogen Erwinia amylovora, is a severe bacterial disease of apple and pear that can quickly destroy whole plants. In the last decade, it was also detected in Central Asia, where wild pomaceous fruit plants represent the dominant species in mid-altitude forests and constitute a critical foundation for the entire ecosystem. Efficiently informing farmers, forestry services and private persons about the instances and dangers of fire blight, the correct way to recognize the symptoms, and the methods of disease control is thus of paramount importance in a vast and fragmented natural landscape like the one characterizing countries like Kyrgyzstan, Kazakhstan and Tajikistan. For that purpose, we have developed an app for smartphones and mobile devices that can inform stakeholders about fire blight, simultaneously allowing a citizen science approach for mapping the spread of the disease in Central Asia. The app is available in the three national languages as well as in Russian, English, and German, and can easily be adapted to new countries, languages or even diseases.
Molecular Dynamics Simulation of Pore-Size Effects on Gas Adsorption Kinetics in Zeolites
Authors: Greathouse Jeffery A. , Paul Matthew J. , Xu Guangping , Powell Matthew D. 
Published: May 2023

AbstractStrong gas-mineral interactions or slow adsorption kinetics require a molecular-level understanding of both adsorption and diffusion for these interactions to be properly described in transport models. In this combined molecular simulation and experimental study, noble gas adsorption and mobility is investigated in two naturally abundant zeolites whose pores are similar in size (clinoptilolite) and greater than (mordenite) the gas diameters. Simulated adsorption isotherms obtained from grand canonical Monte Carlo simulations indicate that both zeolites can accommodate even the largest gas (Rn). However, gas mobility in clinoptilolite is significantly hindered at pore-limiting window sites, as seen from molecular dynamics simulations in both bulk and slab zeolite models. Experimental gas adsorption isotherms for clinoptilolite confirm the presence of a kinetic barrier to Xe uptake, resulting in the unusual property of reverse Kr/Xe selectivity. Finally, a kinetic model is used to fit the simulated gas loading profiles, allowing a comparison of trends in gas diffusivity in the zeolite pores.
The Implementation Experience of COVID-19 Rapid Antigen Testing in a Large-Scale Construction Project in Victoria, Australia
Authors: Ludwick Teralynn , Creagh Nicola Stephanie , Goller Jane L. , Nightingale Claire Elizabeth , Ferdinand Angeline Samantha 
Published: May 2023

AbstractThe coronavirus (COVID-19) pandemic has caused major disruptions to industries and workplaces. Rapid Antigen Tests (RATs) for COVID-19, which allow individuals to self-administer tests and receive timely results without laboratory testing, provide the opportunity for surveillance testing of asymptomatic individuals in non-medical settings. However, the literature offers few lessons regarding how to create enabling conditions for effective and sustainable implementation in a workplace setting. Guided by the RE-AIM framework, we assessed factors associated with the adoption, implementation, and maintenance of mandatory RAT in a large-scale construction project in Victoria, Australia. We used a mixed methods approach involving site observation, worker surveys (n = 30), and interviews with 51 site workers and managers to understand the implementation experience. Factors which facilitated adoption included easy, non-invasive testing procedure; sense of workplace safety; and strong backing by management and acceptance by workers that RATs helped limit COVID-19-related lost days of work. Gaps in knowledge and adherence to testing protocols, logistical challenges (test kit supply, observation of test results), and low appetite for long-term, mandatory testing emerged as challenges for effective implementation and sustainability. As RAT becomes normalized in a range of workplace settings, strategies will be required to support the sustainability of implementation, including longer-term acceptability of surveillance testing and adherence to testing protocols.
False self-employment and bogus internships in Spain
Authors: Arrizabalo Montoro Xabier , del Rosal Crespo Mario , Murillo Arroyo Francisco Javier 
Published: May 2023

AbstractThis paper focuses on the state of precarious work in Spain: Are all those who work as self-employed persons and interns truly operating under those descriptions, or are many of them employees so precariously engaged that they have no labour contracts? If so, how has this come to pass? Why is it increasingly happening? This paper raises some answers based on the Marxist approach. We link employment instability to increased exploitation of the Spanish labour force. This trend is a reaction by capital to low rates of profit and the implementation of particular governmental economic policies implemented to meet the demands of the European Union. Due to the precariousness of work, prospects for achieving a stable and autonomous life for a large cohort of Spain’s working youth are seriously threatened.
Practicing ground rules in police interviews with child witnesses
Authors: Jol Guusje , Stommel Wyke 
Published: May 2023

AbstractIn police interviews with child witnesses, ground rules like ‘correct me when I say something wrong’ are established. Establishing these ground rules is required by guidelines, with the aim of enhancing the reliability of children's testimonies. In this article, we use conversation analysis to examine how ground rules are practiced in thirty-eight Dutch police interviews with child witnesses. We focus on the police officers’ use of test questions to practice such ground rules. We found that, often, these questions (at first) only consist of an if-clause. Questions with this format leave open whose turn it is and what the appropriate response should be. If-clause questions allow flexibility in the difficulty of the test question, and a subtle pursuit of a response from the child. Yet, they are also treated as problematic by children, shown by silences and hesitations. Surprisingly, the practicing of ground rules sometimes occasions affiliation. (Police interviews, children, testing, practicing, affiliation, conversation analysis, hypothetical questions)*
Affluence, congruence, and lobbying success in EU climate policy
Authors: De Bruycker Iskander , Colli Francesca 
Published: May 2023

AbstractStrong climate policy is vital to tackling climate change, but even the best proposals can get watered down when lobbying occurs. This article analyses which interest groups lobby on EU climate policies and under which conditions these groups achieve their policy goals. We expect that both economic and political resources are important. Economic resources give groups the capacity to mobilise expertise, but an interest group’s success also depends on its congruence with public opinion, especially in a politicised area such as EU climate policy. To test our hypotheses, we focus on six EU climate policy issues for which we conducted expert surveys with lobbyists and a content analysis of 737 media statements in eight European news outlets, combined with Eurobarometer data. Our results show that interest groups with higher economic resources and with public opinion on their side are more likely to achieve their preferences on EU climate policy issues.
The Nucleus: Panel Discussion
Authors: Huebner W. F. 
Published: May 2023

Almost all information about the physics of the nucleus is based on deductions from observations of the coma and tails. It is well to keep in mind the hierarchy of events on which these deductions are based:1. The material properties of the constituents of the nucleus and the detailed physical and chemical structure of the nucleus form the basis for the behavior of coma and tails.2. Interaction of solar radiation with the surface of the nucleus determines the overall temporal development of the coma.3. The subsequent interaction of solar radiation and solar wind with the coma determine the gross features of the tails.4. Short term fluctuations primarily in the solar wind (and associated magnetic, field) cause disturbances of comparable duration observable mostly in the tail but also in the coma.
A Survey of Possible Missions to the Periodic Comets in the Interval 1974-2010
Authors: Bender D. F. 
Published: May 2023

AbstractIn order to survey the mission possibilities for the short period comets two catalogues are developed. In the first the physical and pertinent orbital characteristics are given for 65 short period comets. Since missions for short period comets are for the most part expected to utilize arrivals near perihelion at a time when the comet is comparatively active, the second catalogue is one containing the predicted perihelia for each of the 65 comets between 1974 and 2010. Included is enough geometry to indicate feasibility of Earth-based observation and sighting within 100 days of perihelion.
Linking frequency to bilingual switch costs during real-time sentence comprehension
Authors: Salig Lauren K. , Valdés Kroff Jorge R. , Slevc L. Robert , Novick Jared M. 
Published: May 2023

AbstractBilinguals experience processing costs when comprehending code-switches, yet the magnitude of the cost fluctuates depending on numerous factors. We tested whether switch costs vary based on the frequency of different types of code-switches, as estimated from natural corpora of bilingual speech and text. Spanish–English bilinguals in the U.S. read single-language and code-switched sentences in a self-paced task. Sentence regions containing code-switches were read more slowly than single-language control regions, consistent with the idea that integrating a code-switch poses a processing challenge. Crucially, more frequent code-switches elicited significantly smaller costs both within and across most classes of switch types (e.g., within verb phrases and when comparing switches at verb-phrase and noun-phrase sites). The results suggest that, in addition to learning distributions of syntactic and semantic patterns, bilinguals develop finely tuned expectations about code-switching behavior – representing one reason why code-switching in naturalistic contexts may not be particularly costly.
A cognitive–behavioral model of dyspnea: Qualitative interviews with individuals with advanced lung cancer
Authors: Lo Stephen B. , Svensson Aubrey D. , Presley Carolyn J. , Andersen Barbara L. 
Published: May 2023

AbstractObjectivesShortness of breath, or dyspnea, is the subjective experience of breathing discomfort and is a common, distressing, and debilitating symptom of lung cancer. There are no efficacious pharmacological treatments, but there is suggestive evidence that cognitive–behavioral treatments could relieve dyspnea. For this, understanding the psychological, behavioral, and social factors that may affect dyspnea severity is critical. To this end, patients with dyspnea were interviewed with questions framed by the cognitive–behavioral model—emphasizing thoughts, emotions, and behaviors as contributors and outcomes of dyspnea.MethodsTwo trained individuals conducted semi-structured interviews with lung cancer patients (N = 15) reporting current dyspnea. Interviews assessed patients’ cognitive–behavioral experiences with dyspnea. Study personnel used a grounded theory approach for qualitative analysis to code the interviews. Inter-rater reliability of codes was high (κ = 0.90).ResultsThoughts: Most common were patients’ catastrophic thoughts about their health and receiving enough oxygen when breathless. Emotions: Anxiety about dyspnea was the most common, followed by anger, sadness, and shame related to dyspnea. Behaviors: Patients rested and took deep breaths to relieve acute episodes of dyspnea. To reduce the likelihood of dyspnea, patients planned their daily activity or reduced their physical activity at the expense of engagement in hobbies and functional activities.Significance of resultsPatients identified cognitive–behavioral factors (thoughts, emotions, and behaviors) that coalesce with dyspnea. The data provide meaningful insights into potential cognitive–behavioral interventions that could target contributors to dyspnea.
Substorm Triggering by the Solar Wind
Authors: McPherron Robert L. 
Published: May 2023

AbstractThe coupling function monitors solar wind driving of geomagnetic activity. Magnetic indices, including the polar cap (PC) index, the auroral lower (AL) index, and the midlatitude positive bay index (MPB), provide measures of the magnetospheric response. Sharp changes in these are associated with the onset of a substorm and a maximum in coupling. Many reinterpret this association as evidence that northward turnings of the interplanetary magnetic field (IMF) trigger onset. We investigate this hypothesis using a list of over 100,000 negative bay onsets. When data are available, we calculate coupling and its time derivatives. From these, we construct ensembles of data segments centered on the onsets.`For all lists, a pulse occurs 20 min before onset and appears to trigger onset. By correlating the average derivative with every event in the ensemble, we conclude that a pulse of either sign precedes 40% of all onsets. More than half of the triggered onsets display a positive pulse, and slightly fewer show a negative pulse. Substorms following a positive pulse are stronger than those after a negative pulse. The pulse is usually hidden by noise, but ensemble averaging and correlation analysis can detect the pulse in the coupling data.