bluuebunny/crossref_metadata_2025_split huggingface dataset:
Experiment and simulation analysis of tribological and dynamic characteristics in aeroengine hybrid ceramic bearing
Authors: Chen Zhixiong , Long Weishan , Song Li , Li Xinglin 
Published: October 2023

Purpose
This paper aims to research the tribological and dynamic characteristics of aeroengine hybrid ceramic bearings through wear experiments and simulation analysis.

Design/methodology/approach
First, the authors carried out wear experiments on Si3N4–GCr15 and GCr15–GCr15 friction pairs through the ball-disc wear test rig to explore the tribological properties of their materials. Second, using ANSYS/LS-DYNA simulation software, the dynamic simulation analysis of hybrid bearings was carried out under certain working conditions, and the dynamic contact stress of all-steel bearings of the same size was simulated and compared. Finally, the change of the maximum contact stress of the main bearing under the change of load and rotation speed was studied.

Findings
The results show that the Si3N4–GCr15 pair has better tribological performance. At the same time, under the conditions of high speed and heavy load, the simulation analysis shows that the contact stress between the ceramic ball and the raceway of the ring is smaller than the steel ball. That is, hybrid bearings have better transient mechanical properties than all-steel bearings. With the speed increasing to 12,000 r/min, the maximum stress point will shift in the inner and outer rings.

Originality/value
In this study, the tribological and transient mechanical properties of Si3N4 material were comprehensively analyzed through wear experiments and dynamic simulation analysis, which provided a reference for the design of hybrid bearings for next-generation aeroengines.
GPU-accelerated body-internal electric field exposure simulation using low-frequency magnetic field sampling points
Authors: Haussmann Norman , Stroka Steven , Schmuelling Benedikt , Clemens Markus 
Published: October 2023

Purpose
High resolution simulations of body-internal electric field strengths induced by magneto-quasistatic fields from wireless power transfer systems are computationally expensive. The exposure simulation can be split into two separate simulation steps allowing the calculation of the magnetic flux density distribution, which serves as input into the second simulation step to calculate the body-internal electric fields. In this work, the magnetic flux density is interpolated from in situ measurements in combination with the scalar-potential finite difference scheme to calculate the resulting body-internal field. These calculations are supposed to take less than 5 s to achieve a near real-time visualization of these fields on mobile devices. The purpose of this work is to present an implementation of the simulation on graphics processing units (GPUs), allowing for the calculation of the body-internal field strength in about 3 s.

Design/methodology/approach
This work uses the co-simulation scalar-potential finite difference scheme to determine the body-internal electric field strength of human models with a voxel resolution of 2 × 2 × 2 mm3. The scheme is implemented on GPUs. This simulation scheme requires the magnetic flux density distribution as input, determined from radial basis functions.

Findings
Using NVIDIA A100 GPUs, the body-internal electric field strength with high-resolution models and 8.9 million degrees of freedom can be determined in about 2.3 s.

Originality/value
This paper describes in detail the used scheme and its implementation to make use of the computational performance of modern GPUs.
Workplace spirituality and job satisfaction among teachers: influence of well-being and spiritual leadership
Authors: Binu Raj Asha , Ambreesh Pallawi , Tripathi Nitya Nand , Ambreesh Kumar Anusha 
Published: October 2023

PurposeThe purpose of this paper is to examine the role of well-being in mediating the relationship between workplace spirituality and job satisfaction. It also studies the role of spiritual leadership in moderating the effect of workplace spirituality on well-being.Design/methodology/approachThe study proposes a hypothesized model tested among 515 teachers from Indian higher educational institutions, selected through random sampling. Mediation and moderation analysis are used to test the hypothesized relationships.FindingsDrawn on positive organizational studies, the results indicate that inner well-being, comprising of psychological, emotional, social, spiritual and intellectual dimensions, does not mediate the relationship between spiritual dimension of workplace spirituality and job satisfaction. Same effect is observed for mediation role of physical well-being. However, inner well-being and physical well-being both mediate the relationship between mindfulness and job satisfaction among teachers. Also, teachers experience higher levels of well-being in the presence of spiritual leadership at their workplaces.Research limitations/implicationsThe paper contributes to leadership and workplace spirituality literature by testing an integrated framework of mediating role of inner well-being and physical well-being.Practical implicationsThe study helps practitioners to integrate their practices and programs with workplace spirituality for improving well-being and attaining positive outcomes, which can further contribute to performance and productivity in institutions.Originality/valueThe proposed framework highlights the impact of workplace spirituality dimensions and mindfulness on inner well-being and physical well-being of teachers which lead to positive outcomes such as job satisfaction. It also enriches the spiritual leadership literature.
Ambidextrous leadership, social capital, creative behaviour and well-being: a mediation-moderation model
Authors: Jain Sarika 
Published: October 2023

Purpose
Since the past two years, workplace dynamics has changed, as employees have witnessed uncertainty and a constantly fluctuating business environment due to COVID-19. The outbreak is nearly over, but it has led to new work settings in most parts of the world. This requires a suitable leadership approach to derive strategic decisions and cultivate proficiency amongst employees in the new work setting. The purpose of the article is to explore the effects of ambidextrous leadership (AL) in boosting social capital (SC) which further lead to employee creative work behavior. Further, the study also examined the moderating role of well-being in enriching creative work behavior.

Design/methodology/approach
In this study, 281 knowledge workers working in Mumbai were selected as subjects for the study. Structural equation modelling using analysis of moment structure was used to test the mediation. Later, moderated regression analysis confirmed the moderating role of well-being in employee creative behaviour.

Findings
The results confirmed the role of AL comprising closed and open leadership behaviours in enhancing the SC, which is an important element to cultivate creative behaviour amongst employees. In addition, the role of well-being is found to be critical for enhancing creative work behaviour.

Practical implications
The study will help organizations to understand the role of AL, SC and well-being in enhancing creative behaviour amongst knowledge workers.

Originality/value
This study contributes to leadership literature by attempting to integrate the concepts of leadership with SC, well-being and creative work behaviour, which has rarely been done in the Indian context.
Differential reporting and earnings quality: is more better?
Authors: Daniele Mario 
Published: October 2023

PurposeWhen financial statements are public, the choice between alternative reporting regimes constitutes a signal that addresses external stakeholders. Generally, the choice of more complex regimes acts as a complement of firms' transparency. However, in the absence of audits, opportunistic behaviors could be incentivized. This study aims to test whether SMEs' choice between alternative accounting regimes is associated with earnings quality.Design/methodology/approachDrawing on the literature about accounting choices and earnings quality, this study investigates whether the same conclusions are confirmed for SMEs. Using a sample of 4,054 Italian companies and 12,114 observations, it compared four earnings quality proxies of a group of companies that opted for the “Full” rules and those of a subsample of the population of companies that applied the Simplified rules.FindingsThe results suggest that the signaling power of accounting rules' choice could lead to wrong conclusions for SMEs. Indeed, a positive relationship emerged (H1) between the choice of the “Full” rules and income smoothing behaviors, while the same choice appears to reduce the probability to disclose SPOS. Moreover, the results suggest that opportunistic behaviors are more frequent for firms that have settled in a “non-cooperative” social environment (H2).Research limitations/implicationsThis study could foster research on financial reporting quality in private firms.Practical implicationsComparing the quality of financial statements drawn up according to two alternative accounting regimes could provide useful suggestions for both users and regulators.Originality/valueThe results contribute to the limited literature on the implications of differential reporting. Finally, it enriches the literature about heterogeneity in accounting quality within private firms.
Multiplying success: the power of multiple simulations with graduated weighting and coordinated sequencing for learner engagement
Authors: Alstete Jeffrey W. 
Published: October 2023

Purpose
The increasing need for student engagement and the wide availability of digital teaching resources are providing opportunities for careful consideration and planning of assignments within and among business management courses. This paper aims to examine implementation strategies for integrating multiple business simulations with gradually increased assignment weighting and coordinated implementation in a university business curriculum.

Design/methodology/approach
A case study research design with a pattern-matching logic is used to represent a critical test of formulated programmatic and learning theories that have a set of propositions and circumstances with which the proposals are believed to be true. Applied digital management education tools used in a graduated weighting scheme compare an empirically-based pattern with a predicted pattern.

Findings
Systemic program-wide implementation of teaching resources such as simulations, microsimulations and application-based activity role-playing assignments can deliver engaging internal course and coordinated management program experiential-type learning. Carefully planning graduated assignment weights can be a practical strategy for using a low-risk approach to enhance experiential learning.

Practical implications
The strategies proposed provide a practical approach for controlling the learning pace and facilitating low-risk experiential learning through the modern digital business education landscape.

Originality/value
This paper investigates innovative implementation ideas to strategically arrange simulation assignments that can enhance success and prepare students future management work-based training. It explores the value of incorporating different types of business simulations and advanced active learning activities to provide students with engaging experiential learning experiences.
Experimental characterization, theoretical modeling and failure analysis of the mechanical behavior of acrylonitrile butadiene styrene parts by fused filament fabrication
Authors: Algarín Roncallo Roberto Junior , Lopez Taborda Luis Lisandro , Guillen Diego 
Published: October 2023

Purpose
The purpose of this research is present an experimental and numerical study of the mechanical properties of the acrylonitrile butadiene styrene (ABS) in the additive manufacturing (AM) by fused filament fabrication (FFF). The characterization and mechanical models obtained are used to predict the elastic behavior of a prosthetic foot and the failure of a prosthetic knee manufactured with FFF.

Design/methodology/approach
Tension tests were carried out and the elastic modulus, yield stress and tensile strength were evaluated for different material directions. The material elastic constants were determined and the influence of infill density in the mechanical strength was evaluated. Yield surfaces and failure criteria were generated from the tests. Failures over prosthetic elements in tridimensional stresses were analyzed; the cases were evaluated via finite element method.

Findings
The experimental results show that the material is transversely isotropic. The elasticity modulus, yield stress and ultimate tensile strength vary linearly with the infill density. The stresses and the failure criteria were computed and compared with the experimental tests with good agreement.

Practical implications
This research can be applied to predict failures and improve reliability in FFF or fused deposition modeling (FDM) products for applications in high-performance industries such as aerospace, automotive and medical.

Social implications
This research aims to promote its widespread adoption in the industrial and medical sectors by increasing reliability in products manufactured with AM based on the failure criterion.

Originality/value
Most of the models studied apply to plane stress situations and standardized specimens of printed material. However, the models applied in this study can be used for functional parts and three-dimensional stress, with accuracy in the range of that obtained by other researchers. The researchers also proposed a method for the mechanical study of fragile materials fabricated by processes of FFF and FDM.
Uncovering time and frequency co-movement among green bonds, energy commodities and stock market
Authors: Yadav Miklesh Prasad , Ashok Shruti , Taghizadeh-Hesary Farhad , Dhingra Deepika , Mishra Nandita , Malhotra Nidhi 
Published: October 2023

Purpose
This paper aims to examine the comovement among green bonds, energy commodities and stock market to determine the advantages of adding green bonds to a diversified portfolio.

Design/methodology/approach
Generic 1 Natural Gas and Energy Select SPDR Fund are used as proxies to measure energy commodities, bonds index of S&P Dow Jones and Bloomberg Barclays MSCI are used to represent green bonds and the New York Stock Exchange is considered to measure the stock market. Granger causality test, wavelet analysis and network analysis are applied to daily price for the select markets from August 26, 2014, to March 30, 2021.

Findings
Results from the Granger causality test indicate no causality between any pair of variables, while cross wavelet transform and wavelet coherence analysis confirm strong coherence at a high scale during the pandemic, validating comovement among the three asset classes. In addition, network analysis further corroborates this connectedness, implying a strong association of the stock market with the energy commodity market.

Originality/value
This study offers new evidence of the temporal association among the US stock market, energy commodities and green bonds during the COVID-19 crisis. It presents a novel approach that measures and evaluates comovement among the constituent series, simultaneously using both wavelet and network analysis.
Integrating technology with work practices in primary care: challenges to sustainable organizing “from within”
Authors: Brandenberger Isabel Alexandra , Hasu Mervi Anneli , Nerland Monika 
Published: October 2023

Purpose
This paper aims to generate a better understanding of how challenges and opportunities for sustainable change during digitalization relate to the organizing work of change agents mandated to facilitate technology adoption from within local work organizations.

Design/methodology/approach
This study examines the work of welfare technology coordinators, health-care professionals who are mandated to facilitate the use of technologies in home-based services in a Norwegian city. Data comprise ethnographic observations of meetings and work practices, interviews and documents collected over one year. A practice-based approach was applied to analyze how the welfare technology coordinators go about integrating technologies with the work practices, and the forms of negotiations this work implies in their work community.

Findings
The analysis identified four sets of practices in the coordinators’ work: exploring and integrating new technologies into work practices, legitimizing aims and values, formalizing routines and responsibilities and critically considering existing and envisioned service practices. Through these practices, emerging problems and disconnections in the service organization were attended to in a continuous manner.

Originality/value
The study contributes to the literature by examining the work of internal change agents mandated to facilitate multiple and simultaneous technology adoption and demonstrates the importance of recognizing the continuous efforts and negotiations of these agents as significant to sustainable organizing.
Extinction debt and functional traits mediate community saturation over large spatiotemporal scales
Authors: Ramírez Juan P. , Reeder Tod W. , Spasojevic Marko J. 
Published: October 2023

Abstract

Determining if ecological communities are saturated (have a limit to the number of species they can support) has important implications for understanding community assembly, species invasions, and climate change. However, previous studies have generally been limited to short time frames that overlook extinction debt and have not explicitly considered how functional trait diversity may mediate patterns of community saturation.

Here, we combine data from biodiversity surveys with functional and phylogenetic data to explore if the colonisation events after the Great American Biotic Interchange (closure of the Panamanian Isthmus) resulted in increases in species richness of communities of the snake family Dipsadidae. We determined the number and the direction of dispersal events between Central and South America by estimating ancestral areas based on a Bayesian time‐calibrated phylogenetic analysis. We then evaluated whether variation in community saturation was mediated by the functional similarity of six traits for the resident and colonizing snakes and/or local environmental conditions.

We found that colonised communities did not support more species than those that were not colonised. Moreover, we did not find an association between the functional diversity across sites and whether they were colonised by members from the lineages dispersing across the Isthmus or not. Instead, variation in species richness was predicted best by covariates such as time since colonisation and local environment.

Taken together, our results suggest that snake communities of the Dipsadidae across the neotropics are saturated. Moreover, our research highlights two important factors to consider in studies of community saturation: extinction debt and the functional differences and similarities in species' ecological roles.
Assessing the efficacy of online teacher training programs in preparing pre‐service teachers to support students with special educational needs in mainstream classrooms in the UAE: A case study
Authors: Al‐Rashaida Mohammad , Massouti Ayman 
Published: October 2023

AbstractThe study aimed to explore the challenges and potential benefits of online delivery in preparing pre‐service teachers in the United Arab Emirates (UAE) for inclusive teaching. The study specifically examined their readiness to assist students with special educational needs (SEN) within the K‐12 education system. It employed semi‐structured interviews to comprehensively understand the perspectives and experiences of 11 pre‐service teachers enrolled in an online teacher education programme. The findings revealed that the participants expressed significant concern about their preparedness to teach students with SEN. They expressed apprehension about the limited opportunities they had during their teacher education programme to learn about and interact with students with SEN. The findings also shed light on the gap between theory and practice, underscoring the importance of contemporary teacher education programmes in re‐evaluating their curricula to address the emerging needs of both learners and teachers, specifically in the post‐pandemic era of COVID‐19. Lastly, the study provided implications for practice and suggested future research in this area.
Optimization of complex coacervation parameters for the production of encapsulated black garlic using response surface methodology
Authors: Sasmaz Hatice Kubra , Adal Eda , Kadiroğlu Pınar , Selli Serkan , Uzlasir Turkan , Kelebek Hasim 
Published: October 2023

AbstractThe purpose of this study was to optimize black garlic encapsulation parameters (core/coating ratio, extract concentration, and coacervate/maltodextrin [MD] ratio) using central composite design of the response surface methodology based on encapsulation efficiency (EE) (%). The optimum parameters were determined as 4.0 for the coating material/core ratio, 50% for the extract concentration, and 6.0 for the MD/coacervate ratio depending on the EE (%). The antioxidant activity values were determined as 101 and 134 µmol Trolox/100 g dry weight (DW) for the 2,2‐diphenyl‐1‐picrylhydrazyl and 2,2′‐azino‐bis(3‐ethylbenzothiazoline‐6‐sulfonic acid) methods, respectively, whereas the total phenolic content was 49 mg gallic acid equivalent/100 g DW for the encapsulated black garlic samples. S‐Allyl‐l‐cysteine (SAC), γ‐l‐glutamyl‐SAC (GSAC), γ‐l‐glutamyl‐(S)‐trans‐1‐propenyl‐l‐cysteine, and allicin were the organosulfur (OS) compounds determined in the samples. The SAC concentration of the encapsulated black garlic samples was determined as 22.36 mg/g, whereas the GSAC content was found at a lower concentration (0.33 mg/g) compared to SAC. The allicin content was quantified to be 0.31 mg/g. The encapsulated samples were also characterized by scanning electron microscopy (SEM) and Fourier transform infrared (FT‐IR) spectroscopy. The FT‐IR analysis revealed specific functional groups, including hydroxyl, carbonyl, and glycosidic linkage. The interaction between lentil protein isolate and pectin was strong enough to encourage capsule formation as visualized in the SEM images. This study shows the potential of black garlic coacervates as a functional ingredient for the food industry due to their stability, solubility, and preservation of OS and antioxidant compounds.