bluuebunny/crossref_metadata_2025_split huggingface dataset:
Cyclical hydraulic pressure pulses reduce breakdown pressure and initiate staged fracture growth in PMMA
Authors: Mouli-Castillo Julien , Kendrick Jackie E. , Lightbody Alexander , Fraser-Harris Andrew , Edlmann Katriona , McDermott Christopher Ian , Shipton Zoe Kai 
Published: March 2024

AbstractUsing unique experimental equipment on large bench-scale samples of Polymethylmethacrylate, used in the literature as an analogue for shale, we investigate the potential benefits of applying cyclical hydraulic pressure pulses to enhance the near-well connectivity through hydraulic fracturing treatment. Under unconfined and confined stresses, equivalent to a depth of up to 530 m, we use dynamic high-resolution strain measurements from fibre optic cables, complemented by optical recordings of fracture development, and investigate the impact of cyclical hydraulic pressure pulses on the number of cycles to failure in Polymethylmethacrylate at different temperatures. Our results indicate that a significant reduction in breakdown pressure can be achieved. This suggests that cyclic pressure pulses could require lower power consumption, as well as reduced fluid injection volumes and injection rates during stimulation, which could minimise the occurrence of the largest induced seismic events. Our results show that fractures develop in stages under repeated pressure cycles. This suggests that Cyclic Fluid Pressurization Systems could be effective in managing damage build-up and increasing permeability. This is achieved by forming numerous small fractures and reducing the size and occurrence of large fracturing events that produce large seismic events. Our results offer new insight into cyclical hydraulic fracturing treatments and provide a unique data set for benchmarking numerical models of fracture initiation and propagation.
3D Numerical Cross-Section Analysis of a Tapered Beam Slice
Authors: Sarhadi Ali , Eder Martin A. 
Published: March 2024

AbstractCross-section analysis is an important tool used to recover stresses and strains in a structure at specific cross-sections of arbitrary geometries, without the need for a full 3D model. This is particularly essential for large-scale structures such as aircrafts, wind turbine blades, etc. where making a full model can be computationally very expensive or impractical. The majority of currently available cross-section analysis frameworks are based on stepwise prismatic assumptions, which are hardly suited for the analysis of tapered beams. In fact, high-fidelity stress analysis obtained from analytical and full 3D models shows that predictions of stepwise prismatic approximations can significantly deviate from the correct solution of tapered beams. In this work, a prismatic 3D cross-section analysis method is extended to analyze a symmetrically tapered finite cross-section slice. In this study, the cross-section slice is discretized with 8-node and 20-node solid elements. The boundary conditions are applied as six constraint equations via the Lagrange multiplier method. The external nodal forces acting on the cross-section faces are obtained from the equivalent tractions induced by the cross-section forces. The developed numerical model is validated against the exact analytical solutions of a wedge as well as commercial finite element (FE) software COMSOL and it is shown that the numerically predicted displacement and stress fields agree well with those provided by the wedge’s analytical solution and the FE COMSOL results. This work contributes to the advancement of high-fidelity numerical tapered cross-section analysis methods with an application for many engineering structures.
Internet of things (IoT)-based structural health monitoring of laboratory-scale civil engineering structures
Authors: Saravanan T. Jothi , Mishra Mayank , Aherwar Abhishek Dilip , Lourenço Paulo B. 
Published: March 2024

AbstractRapid advances in the Internet of Things (IoT) domain have made it a crucial technology for the real-time structural health monitoring (SHM) of civil engineering infrastructures. The availability of quick and accurate vibration data is essential for SHM, and such data can be obtained through IoT devices mounted on the structures. This study proposes a real-time damage prediction and localization approach using a low-cost "do-it-yourself" wireless sensor node with IoT capabilities for SHM. The proposed sensor node comprised a microcontroller (NODE MCU ESP8266) and a 6-axis accelerometer (MPU6050). The IoT devices track the real-time frequency of the laboratory-scale structure indirectly via measurement of acceleration-time history, and their results are compared with conventional industry-standard accelerometers. Promising results, with a <6% average difference from the conventional accelerometer (difference ranging from 1.3 to 14.3%), provided an innovative SHM for vibration-based real-time SHM using the IoT paradigm. The performance of the proposed methodology was validated numerically and experimentally on two laboratory-scale structures, and the potential of IoT technology for enhancing the efficiency of SHM was demonstrated. The proposed method thus can enable the early detection of damages in infrastructures such as buildings and bridges and thus can reduce the likelihood of accidents via continuous SHM.
Long-term assessment of social amplification of risk during COVID-19: challenges to public health agencies amid misinformation and vaccine stance
Authors: Unlu Ali , Truong Sophie , Sawhney Nitin , Sivelä Jonas , Tammi Tuukka 
Published: March 2024

AbstractThis study employs the Social Amplification of Risk Framework to investigate the stance on COVID-19 vaccines and the spread of misinformation on Twitter in Finland. Analyzing over 1.6 million tweets and manually annotating 4150 samples, the research highlights the challenges faced by the Finnish Institute for Health and Welfare (THL) in steering online vaccination communication. Using BERT models, Botometer, and additional computational methods, the study classifies text, identifies bot-like accounts, and detects malicious bots. Social network analysis further uncovers the underlying social structures and key actors in Twitter discussions during the pandemic. The THL remained a primary source of COVID-19 information throughout the pandemic, maintaining its influence despite challenges posed by malicious bots spreading misinformation and adopting negative vaccine stances. However, THL ceased its Twitter activity at the end of 2022 because its posts were being exploited to gain visibility and traction for misinformation and negative vaccine stance. The study also identifies key influencers in online vaccine discussions, suggesting avenues for improving public health communication. Overall, the research underscores the need to understand social media dynamics to counter misinformation and foster accurate public communication on COVID-19 and vaccination.
Concept and Feasibility Analysis of the Alba Cubesat Mission
Authors: Mozzato M. , Bemporad G. , Enzo S. , Filippini F. , Lazzaro R. , Minato M. , Visentin D. , Via A. Dalla , Farina A. , Pilone E. , Basana F. , Olivieri L. , Colombatti G. , Francesconi A. 
Published: March 2024

AbstractAlbaSat is a 2-Unit CubeSat which is being developed by a student team at the University of Padova. The Alba project aims to design, build, test, launch, and operate the first student CubeSat of the University of Padova, featuring four different payloads. The first goal is to collect data regarding the debris environment in Low Earth Orbit, the second goal is the study of the satellite vibrations, the third one is about CubeSat attitude determination through laser ranging technology, and the fourth goal concerns satellite laser and quantum communication. The Alba CubeSat mission has been selected by the European Space Agency to join the Fly Your Satellite! Design Booster program in December 2022. This paper presents the feasibility study of the Alba CubeSat mission reproduced in the framework of the “Space Systems Laboratory” class of Master of Science in Aerospace Engineering at the University of Padova. In the beginning, a mission requirements definition was conducted. After that, the mission feasibility was considered, with preliminary requirements verification to assess the ability of the spacecraft to survive the space environment, including compliance with Debris Mitigation Guidelines, ground station visibility and minimum operative lifetime evaluation. The Alba mission sets a base for a better understanding of the space environment and its interaction with nanosatellites, and an improvement of the accuracy of debris models. Furthermore, this paper, describing the educational experience and the results achieved, will provide a useful example for future students’ studies on CubeSat mission design.
Human Dignity, Rights and Victim Participation in Criminal Justice
Authors: Holder Robyn L. , Dearing Albin 
Published: March 2024

AbstractHuman dignity is the cornerstone of human rights and central to the Treaty on European Union (EU) and the EU Charter of Fundamental Rights. It is embedded within constitutions across EU countries. This strong commitment to human dignity has given rise to extensive reflection on its centrality to correcting rights violations, inequality, discrimination and the oppressive conduct of state institutions. This article explores the work that human dignity does for people victimised by crime in the EU. We argue that the agentic human, central to the idea of victim participation, originates in human dignity. However, using a dignity lens, an analysis of victims’ rights documents and rights research reveals a paradox within the victim-friendly civil law jurisdictions of Europe. That is, the procedural position of the victim established in tradition and law is undermined by justice professionals’ attachment to the idea of the state’s ownership of the violation. We then discuss jurisprudence of the European Court of Human Rights relevant to the protection of human dignity to identify how this tension between the protection of individual victim rights, especially the right to remedy, and public interest is adjudicated. We suggest that the Court’s attention to individual rights should be harnessed by victim rights advocates and lawyers. While the victim’s procedural role matters to their substantive and meaningful participation in criminal proceedings, it is their right and capacity to act independent of the state that may matter more.
A tale of two Southeast Asian states: media governance and authoritarian regimes in Singapore and Vietnam
Authors: Haenig Martin Albrecht , Ji Xianbai 
Published: March 2024

AbstractPolitical scientists have crafted intricate taxonomies to classify nations beyond liberal democracy, positioning these societies along an authoritarian continuum. Despite the pivotal role of journalists in accelerating political dynamics, there exists a lack of comparative research on media governance in these regimes. Consequently, this study scrutinizes the media governance ecosystems in Vietnam and Singapore. Vietnam is a one-party authoritarian state, whereas Singapore represents a hybrid political system. However, both countries exhibit a stable and uninterrupted rule by the respective ruling party. Our research uncovers the nuances of Singapore’s media regulation, which embeds trusted stakeholders with financial interests in key press roles to reinforce the implicit political norms. Conversely, Vietnam employs a more direct, coercive, and state-centric approach. Media actors in both nations occasionally test the boundaries of acceptable discourses, with each government’s responses being shaped by specific contexts and broader history. Reforms in Vietnam, embracing privatization and commercialization, mirror Singapore’s integration of capitalism, public ownership, and commercial interests when governing media. These findings highlight diverse yet effective authoritarian media governance strategies, unique features, and commonalities in both systems. Overall, media structures in these Southeast Asian countries have undergone profound evolutions towards more sophisticated regulatory tools to manage societal and political transformations.
Scaphitid ammonites from the lower Maastrichtian of Nahoryany (western Ukraine) and discussion on the origin of Hoploscaphites constrictus
Authors: Machalski Marcin 
Published: March 2024

Abstract
The lower Maastrichtian (Upper Cretaceous) section at Nahoryany, south of Lviv (western Ukraine), has been known as a rich source of fossils since 1843. However, the section is not available since a long time ago and fossils collected from it can only be studied in museum collections. In the present paper, ammonites of the scaphitid genus Hoploscaphites are studied based on Nahoryany material, comprising Hoploscaphites pumilus, H. constrictus and H. sp. Specimens from Nahoryany in museum collections lack data on their provenance level within the section so it cannot be determined whether or not they occurred together or formed a succession; data on inoceramid bivalves indicate the presence of two successive zones at Nahoryany. Some specimens from Nahoryany here referred to as H. pumilus are similar to the controversial H. constrictus anterior from the lower Maastrichtian of Poland. This morphology suggests an ancestor–descendant relationship between H. pumilus and H. constrictus, a common species once considered as an informal index for the Boreal Maastrichtian in Europe. The inferred evolutionary transition from H. pumilus to H. constrictus was towards a less robust, recoiled shell, which would have enhanced the horizontal swimming ability and manoeuvrability of these cephalopods. Recoiling trends occurred in several lineages of Late Cretaceous scaphitids.
Are Mathematical Explanations Causal Explanations in Disguise?
Authors: Jha Aditya , Campbell Douglas , Montelle Clemency , Wilson Phillip L. 
Published: March 2024

AbstractThere is a major debate as to whether there are non-causal mathematical explanations of physical facts that show how the facts under question arise from a degree of mathematical necessity considered stronger than that of contingent causal laws. We focus on Marc Lange’s account of distinctively mathematical explanations to argue that purported mathematical explanations are essentially causal explanations in disguise and are no different from ordinary applications of mathematics. This is because these explanations work not by appealing to what the world must be like as a matter of mathematical necessity but by appealing to various contingent causal facts.
Indexical utility: another rationalization of exponential discounting
Authors: Spohn Wolfgang 
Published: March 2024

AbstractThis paper is about time preferences, the phenomenon that the very same things are usually considered the less valuable the farther in the future they are obtained. The utilities of those things are discounted at a certain rate. The paper presents a novel normative argument for exponential discount rates, whatever their empirical adequacy. It proposes to take indexical utility seriously, i.e. utilities referring to indexical propositions (that speak of ‘I’, ‘now’, etc.) as opposed to non-indexical propositions. Economic focus is only on the latter, while the former are neglected. The potential ignorance of when is now generates a difference between indexical and non-indexical utility that can be exploited for a novel argument in favour of exponential discount rates.
Implicit and explicit processes in phonological concept learning
Authors: Moreton Elliott , Pertsova Katya 
Published: March 2024

AbstractNon-linguistic pattern learning uses distinct implicit and explicit processes, which differ in behavioural signatures, inductive biases and proposed model architectures. This study asked whether both processes are available in phonotactic learning in the lab. Five Internet experiments collected generalisation, learning curves, response times and detailed debriefings from 671 valid participants. Implicit and explicit learners were found in all conditions and experiments. Objective measures of implicitvs.explicit learning were correlated with introspective self-report. Participants spontaneously discovered and named phonetic features. These findings contradict the common (usually tacit) assumption that ‘artificial-language’ participants learn only implicitly. Learning mode also affected inductive bias: Implicit learning improved performance on family-resemblance patterns relative to biconditionals (if-and-only-if, exclusive-or) in two experiments. The direction of this effect is unexpected under many current theories of how implicit and explicit concept learning differ, and is consistent with models of explicit learning which take pattern-irrelevant features into account.
Impact of age and apolipoprotein E ε4 status on regional white matter hyperintensity volume and cognition in healthy aging
Authors: Van Etten Emily J. , Bharadwaj Pradyumna K. , Grilli Matthew D. , Raichlen David A. , Hishaw Georg A. , Huentelman Matthew J. , Trouard Theodore P. , Alexander Gene E. 
Published: March 2024

AbstractObjective:White matter hyperintensity (WMH) volume is a neuroimaging marker of lesion load related to small vessel disease that has been associated with cognitive aging and Alzheimer’s disease (AD) risk.Method:The present study sought to examine whether regional WMH volume mediates the relationship between APOE ε4 status, a strong genetic risk factor for AD, and cognition and if this association is moderated by age group differences within a sample of 187 healthy older adults (APOE ε4 status [carrier/non-carrier] = 56/131).Results:After we controlled for sex, education, and vascular risk factors, ANCOVA analyses revealed significant age group by APOE ε4 status interactions for right parietal and left temporal WMH volumes. Within the young-old group (50-69 years), ε4 carriers had greater right parietal and left temporal WMH volumes than non-carriers. However, in the old-old group (70-89 years), right parietal and left temporal WMH volumes were comparable across APOE ε4 groups. Further, within ε4 non-carriers, old-old adults had greater right parietal and left temporal WMH volumes than young-old adults, but there were no significant differences across age groups in ε4 carriers. Follow-up moderated mediation analyses revealed that, in the young-old, but not the old-old group, there were significant indirect effects of ε4 status on memory and executive functions through left temporal WMH volume.Conclusions:These findings suggest that, among healthy young-old adults, increased left temporal WMH volume, in the context of the ε4 allele, may represent an early marker of cognitive aging with the potential to lead to greater risk for AD.
Effects of Plasma Density on the Spatial and Temporal Scale Sizes of Plasmaspheric Hiss
Authors: Zhang Shuai , Rae I. Jonathan , Liu Kaijun , Watt Clare E. J. , Shi Quanqi , Tian Anmin , Degeling Alexander W. , Guo Ruilong , Wang Mengmeng , Shen Xiao‐Chen , Yao Fei , Li Jing chun 
Published: March 2024

AbstractThe effects of plasma density on the plasmaspheric hiss amplitude and its spatial and temporal scale sizes are investigated using data from Van Allen Probes A and B. The plasmaspheric hiss amplitude and scale sizes are found to be more affected by the small‐scale density variations than the overall density profile of the plasmasphere. In detail, our results suggest that both the hiss wave amplitude and its scale sizes are (a) related to the total electron density when the density is less than ∼1,000 cm−3; (b) independent of the total electron density when the density is greater than ∼1,000 cm−3; and (c) better correlated with the detrended density (removing the background plasmasphere density profile from the total electron density) regardless of the density value.
A high aspect ratio surface micromachined accelerometer based on a SiC-CNT composite material
Authors: Mo Jiarui , Shankar Shreyas , Pezone Roberto , Zhang Guoqi , Vollebregt Sten 
Published: March 2024

AbstractSilicon carbide (SiC) is recognized as an excellent material for microelectromechanical systems (MEMS), especially those operating in challenging environments, such as high temperature, high radiation, and corrosive environments. However, SiC bulk micromachining is still a challenge, which hinders the development of complex SiC MEMS. To address this problem, we present the use of a carbon nanotube (CNT) array coated with amorphous SiC (a-SiC) as an alternative composite material to enable high aspect ratio (HAR) surface micromachining. By using a prepatterned catalyst layer, a HAR CNT array can be grown as a structural template and then densified by uniformly filling the CNT bundle with LPCVD a-SiC. The electrical properties of the resulting SiC-CNT composite were characterized, and the results indicated that the electrical resistivity was dominated by the CNTs. To demonstrate the use of this composite in MEMS applications, a capacitive accelerometer was designed, fabricated, and measured. The fabrication results showed that the composite is fully compatible with the manufacturing of surface micromachining devices. The Young’s modulus of the composite was extracted from the measured spring constant, and the results show a great improvement in the mechanical properties of the CNTs after coating with a-SiC. The accelerometer was electrically characterized, and its functionality was confirmed using a mechanical shaker.
Adherence to dietary guidelines associated with lower medical service utilization in preschoolers: a longitudinal study
Authors: Chen Yi-Chieh , Lo Yuan-Ting C. , Wu Hsin-Yun , Huang Yi-Chen 
Published: March 2024

Abstract
Objective
We aimed to evaluate the association between dietary guideline adherence and overall, outpatient, and emergency medical service utilization in Taiwanese preschoolers.

Methods
We selected 614 preschoolers (2–6 years) who had one day of 24-h dietary recall data from the 2013–2016 Nutrition and Health Survey in Taiwan. The Taiwanese Children Healthy Eating Index (TCHEI) was developed on the basis of Taiwanese Food-Based Dietary Guidelines; it assesses dietary adequacy and eating behavior. Data on the participants’ outpatient and emergency medical service utilization were obtained for 2013–2018 from the National Health Insurance Research Database. A multivariable generalized linear model was used to evaluate the association between the TCHEI and medical service utilization for all disease and respiratory diseases.

Results
After adjustment for confounding factors, children aged 2–3 years in the Tertile (T) 2 and T3 groups of the TCHEI exhibited 25% (95% CI 0.69–0.83) and 16% (95% CI 0.77–0.92) lower overall medical visits, respectively. The same pattern was noted in the outpatient and emergency visits for all diseases and respiratory diseases. The children aged 4–6 years in the T2 group exhibited 15% (95% CI 0.80–0.91) and 11% (95% CI 0.82–0.97) lower overall visits and visits for respiratory diseases, respectively. Moreover, preschoolers in the T2 group exhibited lower overall medical expenditures than did those in the T1 group.

Conclusions
TCHEI score was positively correlated with better nutritional status. Optimal dietary intake associated with lower medical service utilization among Taiwan preschoolers.