bluuebunny/crossref_metadata_2025_split huggingface dataset:
Pollutant Dispersion Around a Single Tall Building
Authors: Rich Tomos , Vanderwel Christina 
Published: July 2024

AbstractAn experiment was carried out using a scale model of a tall building, with the goal of investigating the role of individual buildings in the dispersion of air pollution. Pollutant dispersion around an isolated building with a height-to-length aspect ratio of 1.4 is investigated using simultaneous particle image velocimetry and planar laser induced fluorescence. Dye is released from a ground-level point source five building heights upstream of the tall building. It was found that in this case the scalar plume was dispersed laterally strongly by the building, but only slightly vertically. It is hypothesized that this is due to 94% of the plume impinging below the stagnation point on the front of the building and being drawn into the horseshoe vortex. We expect this fraction would be lower in a case in which the building is in an array of smaller buildings, and that this would lead to more vertical dispersion.
Relational Quantum Mechanics and Contextuality
Authors: Robson Calum 
Published: July 2024

AbstractThis paper discusses the question of stable facts in relational quantum mechanics (RQM). I examine how the approach to quantum logic in the consistent histories formalism can be used to clarify what infomation about a system can be shared between different observers. I suggest that the mathematical framework for Consistent Histories can and should be incorporated into RQM, whilst being clear on the interpretational differences between the two approaches. Finally I briefly discuss two related issues: the similarities and differences between special relativity and RQM and the recent Cross-Perspectival Links modification to RQM.
Deciphering China’s higher education outreach paradigm in Southeast Asia: can a neo-tributary perspective work?
Authors: Zhu Kejin , Yang Rui 
Published: July 2024

AbstractChina’s unprecedented economic rise has fueled scholarly debates about its mentality of power strategy. Pundits have approached China’s strategic objectives through its higher education outreach, with Confucius Institute expansion and international student recruitment as two mostly discussed pathways. Whereas their efforts have been largely oriented by Western lexicon including soft power and center-periphery dichotomy. China’s emerging engagements in higher education aid projects and partnerships, particularly along the Belt and Road, are rarely noticed. Adopting the Chinese history-based neo-tributary perspective as the theoretical lens, this study (re)conceptualizes China’s paradigm for global rise through its higher education export to Southeast Asia, encompassing language training, educational development assistance, student mobility, and institution/program partnerships. Data was collected from documentation, institutional data, and semi-structured interviews with 40 informants from Sino-Cambodian higher education programs. The results suggest that universities serve as a showcase for a more pragmatic Chinese exceptionalism, in which traditional Chinese worldview has been incorporated with scientific outward-looking Western ideals. A cultural recognition-seeking tactic has been experimented through telling stories of China’s attractive contemporary cultures and values in educational practices. China has relied more on utilizing higher education as a tool for short-lived economic incentives, diplomatic alliances, and image-building activities to yield quick returns. However, concrete higher education outreach practices remain scant. Neo-tributary perspective is helpful in systematically examining China’s power projection but still confined to its simplified presuppositions of Sino-centrism. It should integrate pluralistic concepts like tianxia and knowledge diplomacy to unveil China’s interactions with the ‘Global South’ and the ‘Global North’.
Middle school students’ career parental support and adolescent–parent career congruence: the mediating role of self-efficacy
Authors: Söner Osman , Gültekin Filiz 
Published: July 2024

AbstractSocial cognitive career theory accepts that an individual’s career journey occurs through the interaction of multiple factors. The career development process includes internal or external factors’ positive or negative effects. This study aims to examine the mediating role of career and talent development self-efficacy, which expresses the belief about a person’s ability, in the relationship between two variables related to parents (adolescent–parent career adaptation—career-related parental support), which is an important factor in the career development of secondary school students. The model was tested with data collected from 652 secondary school students. The results showed that career and ability self-efficacy had a partial mediating role between career-related parental support and adolescent–parent career adjustment. Suggestions are presented to increase adolescent–parent harmony.
Core functions, visitor friendliness and digitalisation: a comparative analysis of corporate museums’ performance
Authors: Dalle Nogare Chiara , Murzyn-Kupisz Monika 
Published: July 2024

AbstractWe exploit a rich dataset on Italian museums to investigate whether corporate museums’ service provision is quantitatively different from the provision by the rest of private museums and by the three different types of Italian publicly owned museums (whose classification is by organisational mode: traditional, autonomous, and outsourced). We consider service provision in the dimensions of core museum functions (research, collection management, dissemination) and visitor friendliness, and we also focus on digital services. We use count data models estimation methods and include controls referring to museums’ characteristics and contextual factors to account for possible confounding effects. Our analysis reveals that corporate museums do not provide more core services than other museums, as expected given the public good component of this category of services. Contrary to expectations, we find that corporate museums are not among the museums providing the largest number of services enhancing visitor friendliness. Finally, corporate museums provide more digital services than traditional public museums and private museums owned by churches, and not less than other museum types. We argue that this latter evidence may come from their interaction with the parent firm. Corporate museums’ higher levels of digitalisation may be seen as the effect of a knowledge spillover between the more profit-oriented business world and the non-profit cultural sector.
Design and evaluation of composite films for in situ synthesis and antibacterial activity of allicin vapour
Authors: Mašková Lucie , Závišová Lenka , Kašpar Ondřej , Knejzlík Zdeněk , Rimpelová Silvie , Tokárová Viola 
Published: July 2024

AbstractAlthough allicin has potent antibiotic properties, its low stability, which is responsible for its persistent biological activity, has posed a significant challenge to its practical application in modern medicine. To harness the healing benefits of this phytochemical, known by humans for thousands of years, we propose a controlled in situ synthesis of allicin vapour near the site of infection. Considering the critical need for novel approaches to prevent pandemic scenarios caused by MDR bacteria, we suggest encapsulating and physically separating allicin precursors (substrate alliin and enzyme alliinase) in alginate-based films and spray-dried chitosan microparticles. The mechanical properties of the hydrogel films of various compositions were evaluated, as well as their ability to protect the encapsulated alliinase against thermal stress and control the overall rate of allicin release upon hydration. Furthermore, the non-contact antibacterial efficacy of free alliin/alliinase reaction mixture (aqueous solution) and three compartmentalised configurations, i.e. film-solution, film-particles, and double-film, were tested against selected bacterial strains, i.e. E. coli, S. epidermidis, and S. aureus. The results indicate that the formation of allicin vapour using the proposed compartmentalised systems addresses allicin’s stability issues and provides better control over the rate of allicin production. The observed antibacterial effect was comparable with directly formed allicin using higher initial amounts of both substances, which is given by diffusion limitations associated with encapsulation. These findings illustrate the potential of compartmentalised systems in developing nature-based wound dressings for infection prevention and promoting healing.
Influence of Structural Properties of Oleic Acid-Capped CdSe/ZnS Quantum Dots in the Detection of Hg2+ Ions
Authors: Ortiz Calderon Fredy Giovany , Gómez Pineros Brayan Stiven , McClenaghan Nathan D. , Granados-Oliveros Gilma 
Published: July 2024

AbstractOleic acid-capped CdSe/ZnS quantum dots (QDs) were used to investigate their photoluminescence (PL) response to Hg2+ ions as a function of the surface properties of QDs. Three distinctly-size CdSe/ZnS QDs were obtained by varying the molar ratio of shell precursors, which were characterized by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HR-TEM), Fourier-Transform infrared (FT-IR), X-ray photoelectron spectroscopy (XPS), absorption spectroscopy, and time-resolved fluorescence spectroscopy. Results revealed the obtention of zinc blende nanocrystals with sizes ranging from 2.7 to 3.2 nm (± 0.5) and ZnS thickness between 0.3 and 1.0 monolayer (ML). The variation of the [S]/[Zn] molar ratio introduced chemical species that act as traps, affecting the PL properties differently. Depending on the thickness of the shell and chemical speciation on surface, Hg2+ ions could induce quenching or enhancement of PL. Detection of mercury ions was evaluated in terms of Stern-Volmer equation, where the limit of detection (LOD) for the PL quenching system was 11.2 nM, while for the PL enhancing systems were 8.98 nM and 10.7 nM. Results demonstrate the performance of oleic acid-capped CdSe/ZnS QDs to detect Hg2+ and their capacity to turn the PL on/off depending on surface properties.
Sleep Problems and Gambling Disorder: Cross-Sectional Relationships in a Young Cohort
Authors: Austin Holly A. , Chamberlain Samuel R. , Grant Jon E. , Baldwin David S. 
Published: July 2024

Abstract
Aims
To investigate the potential association between gambling disorder and symptoms of sleep problems (including insomnia and excessive daytime sleepiness). It was hypothesised that, compared to controls, individuals with gambling disorder would have significantly greater disturbance of sleep, as indicated by increased scores in: (1) sleep items on the Hamilton Anxiety Rating Scale (HAM-A) and Hamilton Rating Scale for Depression (HAM-D); (2) total score on the HAM-A and HAM-D; and (3) the Epworth Sleepiness Scale (ESS).

Methods
Secondary analysis of previously published data from 152 young adults, aged 18–29 years. Individuals were stratified into three groups: controls, those at risk of gambling disorder, and those with gambling disorder. One-way ANOVAs with post-hoc tests were conducted to determine whether groups differed significantly in sleep item scores and total scores of the HAM-A and HAM-D, and the ESS.

Results
HAM-D scale insomnia item scores were significantly higher in the disorder group, when compared to controls, this being particularly marked for middle and late insomnia. The HAM-A item score indicated significantly worse sleep quality in the disorder group, compared to at risk and control groups. Total HAM-A and HAM-D scores were significantly higher in the disorder group, but ESS scores did not differ significantly.

Conclusion
Measures of disruptions in sleep were significantly higher in gambling disorder than controls. Anxiety and depressive symptom severity was also significantly higher in the gambling disorder group. Further research could have implications for identification and treatment of sleep disorders and psychiatric comorbidities in gambling disorder.
Classification of Time–Frequency Maps of Guided Waves Using Foreground Extraction
Authors: Guerra-Bravo Esteban , Baltazar Arturo , Balvantin Antonio , Aranda-Sanchez Jorge I. 
Published: July 2024

AbstractGuided waves propagating in mechanical structures have proved to be an essential technique for applications, such as structural health monitoring. However, it is a well-known problem that when using non-stationary guided wave signals, dispersion, and high-order vibrational modes are excited, it becomes cumbersome to detect and identify relevant information. A typical method for the characterization of these non-stationary signals is based on time–frequency (TF) mapping techniques. This method produces 2D images, allowing the study of specific vibration modes and their evolution over time. However, this approach has low resolution, increases the size of the data, and introduces redundant

information, making it difficult to extract relevant features for their accurate identification and classification. This paper presents a method for identifying discontinuities by analyzing the data in the TF maps of Lamb wave signals. Singular Value Decomposition (SVD) for low-rank optimization and then perform foreground feature extraction on the maps were proposed. These foreground features are then analyzed using Principal Component Analysis (PCA). Unlike traditional PCA, which operates on vectorized images, our approach focuses on the correlation between coordinates within the maps. This modification enhances feature detection and enables the classification of discontinuities within the maps. To evaluate unsupervised clustering of the dimensionally reduced data obtained from PCA, we experimentally tested our method using broadband Lamb waves with various vibrational modes interacting with different types of discontinuity patterns in a thin aluminum plate. A Support Vector Machine (SVM) classifier was then implemented for classification. The results of the experimental data yielded good classification effectiveness within reasonably low computational time despite the large matrixes of the TF maps used.
The Changing Relationship Between Hobby Engagement and Substance Use in Young People: Latent Growth Modelling of the Add Health Cohort
Authors: Bone Jessica K. , Fancourt Daisy , Sonke Jill K. , Bu Feifei 
Published: July 2024

Abstract
Cross-sectional and some longitudinal evidence suggests doing hobbies can reduce substance use, but findings have been inconsistent, and whether associations differ across adolescence remains unclear. This study included 7454 Add Health participants (50% female, 77% White, age mean=14.95 and SD = 1.56). Participants were split into three groups, according to whether they were early (aged 11–14 at baseline), mid (aged 15–16), or late (aged 17–20) adolescents at baseline. The trajectories of binge drinking, marijuana, and tobacco use were analysed in latent growth models across Waves 1–5 (1994–2018). Concurrent associations between substance use and hobby engagement were tested at Waves 1–3 separately in the three age groups. Doing hobbies more frequently was associated with lower odds of binge drinking and marijuana and tobacco use in early adolescence. Although there was initially a similar protective association in mid and late adolescence, this had reversed by Wave 3 for binge drinking and marijuana use, when participants were young adults. This change in the association could be a result of differing social contexts, changes in peer influence, or an indication that creative hobbies are particularly beneficial. It could explain previous inconsistent findings and demonstrates the importance of considering developmental differences when investigating engagement in hobbies.
Chemical characterization of lithium based ceramics utilizing charged particle activation and ion beam techniques
Authors: Dasgupta S. , Datta J. , Reddy G. L. N. , Ghosh M. , Swain K. K. 
Published: July 2024

AbstractNon-destructive methodologies using activation analysis and ion beam analysis techniques were optimized for the chemical characterization of ceramic materials, lithium titanate and lithium niobate, which have application in tritium breeding blanket. The analyses were carried out as a part of chemical quality control exercise. The atomic ratios of Li/Ti, Li/Nb were quantified by charged particle activation analysis using 13 MeV proton beam from variable energy cyclotron facility and particle induced gamma ray emission/Rutherford backscattering spectrometry using 3 MeV/2 MeV proton beam from 3MV tandem accelerator facility. The results of these different analytical methods are in good agreement, which established the applicability of these activation analysis and ion beam techniques for the chemical characterization of these ceramic materials.
Effect of substituted cobalt–chromium–iron oxides’ dissolution kinetics in oxidizing formulation on decontamination process
Authors: Balaji V. , Chandramohan P. , Puspalata Rajesh , Bera Santanu , Mohan T. V. Krishna 
Published: July 2024

AbstractRemoving radioactive corrosion products from Cr-containing iron oxides require a multi-step and multi-cycle decontamination process. The present article brings out the effect of divalent metal ion substitution on the release rate of chromium in the oxidative pre-treatment step. The non-stoichiometric cobalt chromium ferrites were synthesized, characterized and effect of Zn2+/Ni2+ substitution on the dissolution behavior was probed. The dissolution rates decreased with increasing the degree of inclusion and showed minima at ~ 0.4–0.6 atom% which is explained on the basis of lattice structure. It is concluded that the dissolution kinetics of native nickel–chromium ferrites in reactors increases with metal ion inclusion.
Thermal degradation of nanoporous Si-containing hybrid terpolymer
Authors: Sobiesiak Magdalena , Puziy Alexander M. , Poddubnaya Olga I. , Parcheta Monika 
Published: July 2024

AbstractIn this work development of structural and chemical properties of four nanoporous hybrid carbons has been presented. The carbons were synthesized by direct carbonization at 450, 600, 750 and 900 °C of the terpolymeric hybrid precursor composed of methacrylamide, divinylbenzene and trimethoxyvinylsilane and impregnated with sulfanilic acid (SA) as the surface modifier. The conditions of the carbonization process were set on the basis of the thermogravimetric analysis combined with FTIR analysis of the evolved gases (TGA-EGA). The use of SA contributed to the reduction of the carbonization temperature by about 100 °C and resulted in carbons with very uniform and bimodal porosity with the width range of about 1 and 14–28 nm. Spectral (ATR, Raman, XPS) and X-ray diffraction methods used to characterize the resulting carbon products allowed to define the gradual changes taking place in the morphological and chemical structure of the prepared materials. Cyclic and symmetrical structures of silicates species were gradually replaced by amorphous arrangements. At the same time, the increase in the sp2/sp3 carbon ratio from 1 to 65% proved progressive ordering and aromatization of the carbonized polymeric hybrid precursor. Some functional groups (e.g., N-containing) were built into carbon clusters forming pyridinic, pyrrolic and N-graphitic like structures, while others (e.g., carbonyls) were removed from the surface.
A0 mode Lamb wave propagation in a nonlinear medium and enhancement by topologically designed metasurfaces for material degradation monitoring
Authors: Liu Ze , Shan Shengbo , Cheng Li 
Published: July 2024

AbstractThis paper intends to provide an application example of using metamaterials for elastic wave manipulation inside a nonlinear waveguide. The concept of phase-gradient metasurfaces, in the form of artificially architectured structures/materials, is adopted in nonlinear-guided-wave-based structural health monitoring (SHM) systems. Specifically, the second harmonic lowest-order antisymmetric Lamb waves (2nd A0 waves), generated by the mutual interaction between primary symmetric (S) mode and antisymmetric (A) mode waves, show great promise for local incipient damage monitoring. However, the mixing strength is adversely affected by the wave beam divergence, which compromises the 2nd A0 wave generation, especially in the far field. To tackle this problem, a metasurface is designed to tactically enhance the 2nd A0 waves through manipulating the phases and amplitudes of both primary waves simultaneously. After theoretically revealing the features of the 2nd A0 wave generation in a weakly nonlinear plate, an inverse-design strategy based on topology optimization is employed to tailor-make the phase gradient while ensuring the high transmission of the primary waves, thus converting the diverging cylindrical waves into quasi-plane waves. The efficacy of the design is tested in a 2nd-A0-wave-based SHM system for material degradation monitoring. Results confirm that the manipulated S and A mode waves can propagate in a quasi-planar waveform after passing the surface-mounted metasurface. Changes in material properties inside a local region of the host plate can be sensitively captured through examining the variation of the 2nd A0 wave amplitude. The concept presented here not only showcases the potential of metamaterial-enhanced 2nd A0 waves for material degradation monitoring, but also illuminates the promising direction of metamaterial-aided SHM applications in nonlinear waveguides.
Numerical solution of FDE-IVPs by using fractional HBVMs: the fhbvm code
Authors: Brugnano Luigi , Gurioli Gianmarco , Iavernaro Felice 
Published: July 2024

AbstractIn this paper we describe the efficient numerical implementation of Fractional HBVMs, a class of methods recently introduced for solving systems of fractional differential equations. The reported arguments are implemented in the Matlab$$^{\copyright } $$

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code , which is made available on the web. An extensive experimentation of the code is reported, to give evidence of its effectiveness.
Atomic Force Microscopy of Transfer Film Development
Authors: Shaffer Kathryn E. , McCumiskey Edward J. , Krick Brandon A. , Ewin Jeffrey J. , Taylor Curtis R. , Junk Christopher P. , Blackman Gregory S. , Sawyer W. Gregory , Pitenis Angela A. 
Published: July 2024

AbstractAtomic force microscopy (AFM) provides the opportunity to perform fundamental and mechanistic observations of complex, dynamic, and transient systems and ultimately link material microstructure and its evolution during tribological interactions. This investigation focuses on the evolution of a dynamic fluoropolymer tribofilm formed during sliding of polytetrafluoroethylene (PTFE) mixed with 5 wt% alpha-phase alumina particles against 304L stainless steel. Sliding was periodically interrupted for AFM topography scans. The average film roughness, the average friction coefficient, and polymer wear rate based on sample height recession were recorded as a function of increasing sliding cycles. Topographical maps suggested tribofilm nucleates in grooves of the steel countersample, spreads, and develops into a uniform film through sliding. Prominent nanoscale features were visible around 10,000 sliding cycles and thereafter. Scanning electron microscopy and energy-dispersive X-ray spectroscopy showed good correlations between these features and aluminum-rich domains, suggesting the presence of alumina particles on the surface.