bluuebunny/crossref_metadata_2025_split huggingface dataset:
Compressive and flexural properties and damage modes of aluminum foam/epoxy resin interpenetrating phase composites reinforced by silica powder
Authors: Su Mingming , Zhou Zhiming , Wang Han 
Published: September 2024

AbstractInterpenetrating phase composites (IPCs) can combine the advantages of each component and have a good application prospect. IPCs were prepared by combining open‐cell aluminum foam (AF) and epoxy resin (EP) in three‐dimensional space in this study. Different contents of silica powder (SP, 80, 100, 120, and 140 wt%) were added to EP to improve the compressive and three‐point bending properties of IPCs. In the bending test, acoustic emission (AE) was applied to track the bending deformation of the samples, and k‐means clustering algorithm was applied to identify the damage modes. The compressive and bending properties of IPCs increased first and then decreased with the increase of SP content, and reached the maximum when the SP content was 100 wt%, with a compressive yield strength of 74.6 MPa and a bending peak load of 1.96 kN. The performance degradation was mainly attributed to the AF/EP debonding due to SP distribution at the interface. The X‐type shear band and EP/AF debonding appeared in compression failures of AF and IPCs, respectively. The AE clustering results showed that under bending load, plastic deformation of matrix (60–200 kHz) and fracture failure (230–340 kHz) modes appeared in AF, while EP/AF debonding (60–120 kHz), EP failure (120–230 kHz) and plastic deformation of foam matrix (230–250 kHz) modes appeared in IPCs.Highlights
Silica powder was added to improve compressive and bending properties of IPCs.
Acoustic emission was used to monitor bending of foam and IPCs firstly.
k‐means clustering was used to identify and classify bending damage patterns.
The relationship between openness to experience and humor production: Exploring the mediating roles of cognitive flexibility and ambiguity tolerance
Authors: Sun Cuicui , Shen Jielin , Lin Jiajia , Zhang Tingyu , Li Junyi 
Published: September 2024

AbstractThe purpose of this study was to examine how individual openness to experience influences humor production and to explore the underlying psychological mechanisms of this relationship, specifically focusing on cognitive flexibility (the cognitive path) and ambiguity tolerance (the motivational path). To comprehensively evaluate individuals' humor production ability, Study 1 employed a subjective self‐report questionnaire on sense of humor, while Study 2 used an objective humor dialogue generation task. The results of Study 1 indicated that openness to experience did not directly impact sense of humor; instead, the relationship between openness to experience and sense of humor was fully mediated by cognitive flexibility. In Study 2, findings showed that openness to experience positively predicted humor production ability, with ambiguity tolerance partially mediating this effect. These results suggest that individuals with higher levels of openness to experience have a greater capacity for generating humorous perspectives. Moreover, the study identified two psychological pathways—cognition and motivation—in the process of generating funny ideas. The specific pathway influenced by the measurement method used for humor production further highlights the importance of both cognitive flexibility and ambiguity tolerance in understanding how openness to experience contributes to humor production.
Epoxy composite dust reinforced novel polypropylene composites: An eco‐friendly approach toward sustainable resource management
Authors: Sharma Hitesh , Gairola Sandeep , Misra Joy Prakash , Singh Inderdeep 
Published: September 2024

AbstractThis study presents an innovative technique for recycling leftover epoxy composites reinforced with natural fillers. The waste epoxy composites were successfully ground into a 75–150 μm fine powder. With the aid of extrusion injection molding, this powder was subsequently utilized to create polypropylene matrix‐based polymer composites with variable filler loadings ranging from 10% to 30%. The mechanical, thermal, thermomechanical, and morphological properties of the developed composites were assessed. The greatest tensile strength of the polypropylene composites produced with 10% filler loading was found to be 24.15 MPa. The addition of epoxy composite filler increased the thermal stability. During morphological investigations, it was discovered that pits, voids, and filler agglomerations predominated the fractured surface of the developed composites. Overall, it can be concluded that there is a lot of promise for value‐added recycling of thermosetting resin‐based composites using this low‐cost, high‐efficiency, and ecologically benign process, which would lessen the environmental impact of plastic.Highlights
Novel polypropylene composites using epoxy composite dust was developed.
Mechanical, thermal, thermomechanical, and morphological studies were performed.
Toys, tableware, mementos, and furniture can be the potential applications.
The developed composites can reduce plastic load on the environment.
Unpacking the differences in social impact and social preference among Spanish preschool aggressors, victims, aggressor‐victims, and defenders whilst controlling for emotional competences
Authors: Navarro Raúl , Víllora Beatriz , Rodríguez‐Álvarez Juan Manuel , Yubero Santiago , Larrañaga Elisa 
Published: September 2024

AbstractPeer status among preschool children has been associated with their roles in aggression‐related interactions. This study analyses the differences between aggressors, victims, aggressor‐victims and defenders on two measures of peer status (social impact and social preferences) whilst controlling for individual factors. The sample comprised 394 preschool children (184 girls, 210 boys) between the ages of 3–6 years old (M = 4.36, SD = 0.87) and their parents supplying information about socio‐demographic variables and children's emotion regulation. Teachers rated emotional competences for each child in their class. Analysis of covariance along with Bonferroni‐adjusted post‐hoc comparisons were conducted to compare mean scores between the aggression roles for social impact and social preference while controlling for significant individual factors. The results revealed that aggressors and aggressor‐victims exhibited higher social impact but lower social preference after controlling for individual factors. In contrast, defenders enjoyed higher social status among their peers, characterized by both higher social preference and social impact. Victims were associated with lower social preference and social impact. Uninvolved children consistently exhibited lower social impact. Results underscore the need for interventions that focus on promoting prosocial behaviors, addressing aggressive tendencies, and enhancing emotional competences to create a more positive and supportive peer environment.
The development of sources of self‐efficacy in self‐regulation during one primary school year: the role of gender, special educational needs, and individual strengths
Authors: Ikävalko Minna J. , Sointu Erkko T. , Lambert Matthew C. , Lazarides Rebecca , Viljaranta Jaana 
Published: September 2024

AbstractThe study investigated the development of sources of self‐efficacy in self‐regulation in 9–12 year old (N = 317, primary school) students during one school year. We used latent growth curve modeling to determine (1) how the different sources of self‐efficacy for self‐regulation (i.e., mastery experience, vicarious experience, social persuasion, physiological and emotional arousal) change over one school year, and (2) how students' gender, special educational needs, and behavioral and emotional strengths relate to these changes. These results indicated that, on average, mastery experiences decreased and physiological and emotional arousal increased, whereas vicarious experience and social persuasion remained stable. Girls had higher initial levels of physiological and emotional arousal than boys, and experienced a steeper decline in mastery experiences compared to boys. Students with special educational needs had lower initial levels of mastery experience and higher physiological and emotional arousal than students without special educational needs. In addition, students with higher individual strengths presented higher initial levels of mastery and vicarious experiences, and lower physiological and emotional arousal. The results contribute to current research and practice by indicating that sources of self‐efficacy for self‐regulation change over time and are thus malleable in the school context.
Das zirkumgalaktische Medium
Authors: Richter Philipp 
Published: September 2024

ZusammenfassungAls zirkumgalaktisches Medium bezeichnet man die gasförmigen Hüllen von Galaxien, die sich räumlich weit über deren stellaren Körper hinausstrecken. In den letzten Jahren hat sich unser Verständnis des zirkumgalaktischen Mediums durch die Kombination verschiedener Analysemethoden, der Nutzung neuester Beobachtungsinstrumente sowie der Auswertung magnetohydrodynamischer Simulationen entscheidend verbessert. Als Materiereservoir zur Bildung neuer Sterne in Galaxien kommt dem zirkumgalaktischen Medium in der Strukturentwicklung in allen kosmologischen Epochen eine wichtige Funktion zu. Systematische Untersuchungen des zirkumgalaktischen Mediums unserer Milchstraße spielen hierbei eine wichtige Rolle, da nur hier das Gas in all seinem Detailreichtum eingehend studiert werden kann.
Sanctions and infrastructural ideologies: Assessing the material shaping of EU digital sovereignty in response to the war in Ukraine
Authors: ten Oever Niels , Perarnaud Clement , Kristoff John , Müller Moritz , Resing Max , Filasto Arturo , Kanich Chris 
Published: September 2024

AbstractIn this paper, we interrogate the sanctions instated against Russian media by the European Union (EU) in response to Russia's aggression in Ukraine. We do this in three ways. First, we present the outcome of extensive network measurements that show the heterogeneous implementation of the sanctions in EU Member States. Second, we explain how the sanctions fit the EU's digital sovereignty agenda. And third, we theorise the EU's digital sovereignty policies and sanctions as the emergence of a repressive state apparatus that forms a metagovernance regime with the ideological state apparatus of multistakeholder internet governance. We explain how networks are shaped in the dialectical relation between the ideological and repressive state apparatuses by showing how multistakeholder internet governance aims to stay politically neutral to accommodate the politics of different repressive state apparatuses. In turn, repressive state apparatuses define their demands in a technologically neutral way so multistakeholder internet governance can continue to develop and adapt communication networks. This research combines methods from Computer Science with theoretical frameworks from European Studies, Science and Technology Studies, Media Studies and International Relations. Through this work, we aim to contribute to the practice of interdisciplinary analysis of communication networks and debates on digital sovereignty, European infrastructuralisation, and internet governance.
Survivorship Needs in Patients With Head and Neck Cancer in Regional, Rural and Remote Areas: A Systematic Review
Authors: Pradhan Poorva , Sharman Ashleigh R. , Palme Carsten E. , Elliott Michael S. , Clark Jonathan R. , Venchiarutti Rebecca L. 
Published: September 2024

ABSTRACTObjectiveUnderstanding survivorship issues among people with head and neck cancer (HNC) is important as survival rates increase. Most research has focused on urban patients, leaving a gap in understanding the challenges faced by those in rural areas. This study aims to summarise the literature on survivorship needs for people with HNC in rural areas.MethodsPubMed, PsycINFO, Scopus, Medline, CINAHL, Web of Science, and Embase were searched from database inception to 10 July 2024, with no restriction on publication period, country, or language. Data on study aims, country, methodology, and major findings related to HNC survivors in rural areas were extracted. Study quality was assessed using the Joanna Briggs Institute critical appraisal checklists.ResultsTwenty‐one studies met the inclusion criteria. Eight studies were qualitative, 11 were quantitative, and two adopted a mixed‐methods approach. Results demonstrate the impact of complex treatments on physical (n = 13) and psychosocial (n = 14) functioning. This study also emphasises multifaceted challenges, including reduced access to specialised services, resulting in greater travel and financial burden, extending to caregivers. Hence, primary healthcare services are crucial in supporting these patients closer to home.ConclusionsAddressing the gaps in equitable post‐treatment care requires an even distribution of healthcare funding and workforce in rural areas. Future research could target these issues to develop tailored interventions or models of care, such as shared care, to ease access and financial burden.
Social care provision for older adults in China: Regional disparities and driving factors
Authors: Kong Xinyue , Li Lianyou 
Published: September 2024

AbstractIn the context of rapid ageing, the scale and distribution of social care resources for older adults in China are undergoing significant changes. Based on the macroscopic samples of the National Statistical Yearbooks from 2011 to 2021, this study examines the regional disparities, dynamic evolution, and drivers of social care provision for older adults in China. The results reveal that while the overall level of social care provision for older adults has consistently improved, significant regional disparities persist. The most abundant social care resources have long been concentrated in the economically prosperous coastal regions. Although overall disparities have shown a fluctuating downward trend over time, the absolute gaps across certain economic regions continue to widen. Furthermore, this study identifies several driving factors behind senior social care provision, including regional economic conditions, government preferences for welfare fiscal expenditure, regional consumption patterns, and urbanisation rates. However, the increase in local financial autonomy has a negative impact on the provision of social care for older adults. The findings highlight the importance of developing a more scientific fiscal oversight mechanism, creating region‐specific policies, and addressing the needs of older migrants to achieve the goal of equalising social care provision for older adults.
Dual‐channel observer design for composite disturbances based on characteristic compensation
Authors: Wen Xinyu , Wang Zhihao , Dong Yaling , Li Ruixian 
Published: September 2024

AbstractThis paper presents a non‐coupled structure of characteristic compensation dual‐channel observer (CCDCO) for handling systems subjected to composite disturbances. There exist an outer disturbance compensation channel (ODCC) and an inner disturbance compensation channel (IDCC) in the design strategy. Specifically, in the ODCC, the proposed frequency characteristic compensation observer (FCCO) extracts and removes the regular periodic components from the composite disturbances, where the estimation error preserves irregular characteristics. Thus, the estimation error of FCCO and irregular parts are treated as lumped terms estimated via compensation function observer (CFO) in the IDCC. As a solving skill for composite disturbances estimation, CCDCO has two important advantages over previous designs. First, the proposed non‐coupled structure explicitly distinguishes disturbance characteristics according to a priori information known or not. Second, by combining the benefits of the CFO and proposed FCCO, different types of disturbances can be estimated accordingly without coupling of each other. Simulation results on the robotic manipulator are provided to validate the effectiveness of the proposed method.
Civic Place Literacies: Tracing Urban Migrant Girls' Democratic Meaning‐Making Through Virtual Transnational Practitioner Research
Authors: Thakurta Ankhi G. 
Published: September 2024

AbstractHistorically marginalized youth shape public life through civic literacies that are rooted in their identities and experiences with systemic injustices. Literacy scholarship has accordingly traced how practitioner inquiry, a participatory approach to knowledge production, can educationally support the flourishing of these literacies. But while marginalized youth negotiate public life across multiple national contexts of inequality, this research has remained mostly nation‐bound. This paper extends prior scholarship in a comparative, cross‐national direction by exploring how, in a virtual transnational practitioner study, two urban migrant girls based in the United States and India—multiply marginalized youth from two of the world's largest and most unequal democracies—engaged in democratic meaning‐making. Tracing how youth took up learning invitations across two separate inquiry communities and one‐on‐one conversations with the teacher‐researcher, it foregrounds their civic place literacies: that is, their meaning‐making practices which reflected how their intersectional identities in their democratic communities shaped, too, their socio‐spatial navigations of those contexts. Tracing two themes related to girls' civic place literacies across India and the United States, the article concludes with implications for how future research and praxis can center urban migrant girls' civic place literacies, agency, and resistance across borders. (WC = 203).
Group Response‐Adaptive Randomization With Delayed and Missing Responses
Authors: Zhai Guannan , Li Yang , Zhang Lixin , Hu Feifang 
Published: September 2024

ABSTRACTResponse‐adaptive randomization (RAR) procedures have been extensively studied in the literature, but most of the procedures rely on updating the randomization after each response, which is impractical in many clinical trials. In this article, we propose a new family of RAR procedures that dynamically update based on the responses of a group of individuals, either when available or at fixed time intervals (weekly or biweekly). We show that the proposed design retains the essential theoretical properties of Hu and Zhang's doubly adaptive biased coin designs (DBCD), and performs well in scenarios involving delayed and randomly missing responses. Numerical studies have been conducted to demonstrate that the new proposed group doubly adaptive biased coin design has similar properties to the Hu and Zhang's DBCDs in different situations. We also apply the new design to a real clinical trial, highlighting its advantages and practicality. Our findings open the door to studying the properties of other group response adaptive designs, such as urn models, and facilitate the application of response‐adaptive randomized clinical trials in practice.
A Reactor based on P‐N Heterojunction of Polypyrrole and Porous Silicon for Photocatalytic and Electro‐assisted Photocatalytic Performance
Authors: Thai Giang Hong , Giang Ho Truong , Hieu Ngo Thanh , Thu Do Thi Anh , Ngan Pham Quang , Nguyen Quoc Cuong , Cuong Dao Huy , Ha Ngo Ngoc , Nguyen Truong Giang , Huy Nguyen Thanh 
Published: September 2024

AbstractIn this work, a photoelectrochemical reactor with an anode based on hybrid structure between conducting polymer polypyrrole (PPy) and porous silicon (PSi) was fabricated and utilized to evaluate the photocatalysis and electro‐assisted photocatalysis for degradation of rhodamine B (RhB) solution. The PSi was made of n‐type silicon single‐crystal wafer by the metal‐assisted chemical etching (MACE). The anode PPy/PSi formed following a polymerization of the PPy on the PSi from the vapour‐phase route using oxidant FeCl3. Typical material characterizations of the PPy, PSi and PPy/PSi were investigated via scanning electron microscope (SEM), and spectroscopies of Fourier‐transform infrared (FTIR), Raman scattering and UV‐vis. Under visible light radiation (halogen light with the wavelength region of 400–700 nm), photocatalytic and electro‐assisted photocatalytic processes of the reactor were conducted by degradation of the RhB solution. A heterojunction (p‐n) of the PPy/PSi was proposed to explain the efficient catalytic performance of the reactor.
Optimizing a Facile and Rapid Method for Extraction of Flavonoids from Matricaria Chamomilla Using TiO2 Nanoparticles
Authors: Aghababaei Rezvan , Dastan Dara 
Published: September 2024

AbstractFlavonoids are known as valuable natural compounds and Chamomile is a rich source of flavonoids. The extraction efficiency of flavonoids is affected by various conditions. So it appears necessary to develop a practical method for the extraction of these compounds. In this study, we attempted to extract the phenolic compounds from chamomile using the surface capacity of titanium oxide nanoparticles (TiO2). UV and FT‐IR spectroscopy was used to determine the accuracy of the binding. The HPLC‐PDA technique was used for the quantification of phenolic compounds and the recovery test result was 84 %. Determining the antioxidant, phenolic, and flavonoid contents suggested that the developed method is successful for the extraction of phenolic compounds. The influential extraction parameters after optimization consisted of the pH of 7, extraction temperature of 25 °C, extraction time of 15 min, and TiO2 nanoparticle concentration of 4 mM. The method seems acceptable for industrial applications.
Advancements in Castor Oil‐Derived Smart Materials: A Comprehensive Mini‐Review
Authors: Mukherjee Chandrapaul , Nath Aashika R. , Jaisankar Sellamuthu N. , Sarkar Jit 
Published: September 2024

AbstractSmart materials encompass a class of materials capable of reorienting themselves in response to external stimuli (heat, light, and chemical), and generate smart properties such as self‐healing (SH) and shape‐memory (SM), etc. Recently, castor oil has emerged as a bio‐renewable feedstock facilitating the synthesis of smart polymers such as polyurethanes and epoxidized castor oil (CO)‐based polymers. Furthermore, fillers and nanomaterials have been added to prepare responsive materials (SH and SM) and drug delivery systems. This review delves into the recent developments in CO‐based smart materials since 2015 under thermal, photo, and chemical stimuli and their applications in coating, adhesive, soft robotics, and drug delivery. Additionally, the challenges and future scopes for the development of castor oil‐based advanced smart materials have been discussed.