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The purpose of this paper is to propose a new method that allows to compare the magnetic pressures of different pulse width modulation (PWM) strategies in a fast and efficient way.

The voltage harmonics are determined using the double Fourier integral. As for current harmonics and waveforms, a new generic model based on the Park transformation and a dq model of the machine was established taking saturation into consideration. The obtained analytical waveforms are then injected into a finite element software to compute magnetic pressures using nodal forces.

The overall proposed method allows to accelerate the calculations and the comparison of different PWM strategies and operating points as an analytical model is used to generate current waveforms.

While the analytical expressions of voltage harmonics are already provided in the literature for the space vector pulse width modulation, they had to be calculated for the discontinuous pulse width modulation. In this paper, the obtained expressions are provided. For current harmonics, different models based on a linear and a nonlinear model of the machine are presented in the referenced papers; however, these models are not generic and are limited to the second range of harmonics (two times the switching frequency). A new generic model is then established and used in this paper after being validated experimentally. And finally, the direct injection of analytical current waveforms in a finite element software to perform any magnetic computation is very efficient.

This paper presents the biography of one of Australia’s earliest female accountants, Miss Evelyn Maude West (aka Eva). The paper uses this history sub-genre to understand the significant impacts Eva West made across several fields. Eva West was not only a pioneer woman accountant but also an active philanthropist with an interest in social issues and a nature lover who promoted and encouraged an appreciation of the environment.

The paper leverages a diverse array of qualitative resources, responding to Carnegie and Napier's (1996) call to expand the concept of the accounting-based archive. Notably, rare nature study diaries and a book detailing camping adventures serve as poignant examples, illustrating Eva West's profound social and environmental engagement. Additionally, personal and business letters, digitised newspapers, pamphlets, annual reports, minute books and even poems contribute to the comprehensive exploration of Eva West's life and impact. Collectively, these varied sources offer a rich tapestry of evidence, facilitating the documentation of this unique narrative.

Throughout her life, Eva West made significant contributions as a pioneering woman in the field of accounting, a dedicated philanthropist and a passionate environmentalist. Together, these offer a multifaceted portrait of a well-rounded individual. With a solid foundation in accounting, Eva utilized her expertise to benefit numerous charitable organisations, leaving a lasting impact on the community. Moreover, her deep love for the environment is illustrated in nature study diaries and books documenting her camping adventures, highlighting the interconnectedness between her accounting pursuits and her commitment to environmental stewardship.

While previous studies briefly mention the additional contributions of early women to various organisations and movements, none provide the depth of insight seen in the portrayal of Miss Eva West. Rather than critiquing these earlier narratives, this observation presents an opportunity for further research to honour pioneering individuals for their multifaceted roles beyond accounting. Future studies could spotlight trailblazers as accountants with diverse interests and societal contributions, whether in social or environmental spheres. Additionally, this paper demonstrates how archives maintained by individuals, such as nature or travel diaries and camping books, can enrich accounting and accountability-based historical research.

Biographical studies in accounting have played a significant role in advancing historical research, yet there remains a call for additional studies to gain deeper insights into specific individuals. Few biographical narratives have explored how accountants integrate their professional careers with other interests, particularly highlighting the well-roundedness of individuals, especially women. Furthermore, this paper contributes to filling the gap in research that examines the intersection of accounting professionals and environmental concerns.

This Friction stir welding study aims to weld thick AA8011 aluminium plates, and the interface joints created with a variety of tool pin profiles were examined for their effects on the welding process.

Scanning electron microscopy and optical microscopy and X-ray diffraction were used to examine the macro and micro-structural characteristics, as well as the fracture surfaces, of tensile specimens. The mechanical properties (tensile, hardness tests) of the base metal and the welded specimens under a variety of situations being tested. Additionally, a fracture toughness test was used to analyse the resilience of the base metal and the best weldments to crack formation. Using a response surface methodology with a Box–Behnken design, the optimum values for the three key parameters (rotational speed, welding speed and tool pin profile) positively affecting the weld quality were established.

The results demonstrate that a defect-free junction can be obtained by using a cylindrical tool pin profile, increasing the rotational speed while decreasing the welding speeds. The high temperature and compressive residual stress generated during welding leads to the increase in grain size. The grain size of the welded zone for optimal conditions is significantly smaller and the hardness of the stir zone is higher than the other experimental run parameters.

The work focuses on the careful examination of microstructures behaviour under various tool pin profile responsible for the change in mechanical properties. The mathematical model generated using Taguchi approach and parameters was optimized by using multi-objectives response surface methodology techniques.

Owing to the toxicity, biodegradability, and cost of most corrosion inhibitors, research attention is now focused on the development of environmentally benign, biodegradable, cheap, and efficient options. In consideration of these facts, chrysin, a phytocompound of Populus tomentosa (Chinese white poplar) has been isolated and investigated for its anticorrosion abilities on carbon steel in a mixed acid and chloride system. This highlights the main purpose of the study.

Chrysin was isolated from Populus tomentosa using column chromatography and characterized using Fourier Transform Infrared Spectroscopy and Nuclear Magnetic Resonance Spectroscopy. The investigations are outlined based on theory (Fukui indices, condensed density functional theory and molecular dynamic simulation) and experiments (electrochemical, gravimetry and surface morphology examinations).

Theoretical evaluations permitted the description of the adsorption characteristics, and molecular interactions and orientations of chrysin on Fe substrate. The interaction energy for protonated and neutral chrysin on Fe (110) were −149.10 kcal/mol and −143.28 kcal/mol, respectively. Moreover, experimental investigations showed that chrysin is a potent mixed-type corrosion inhibitor for steel, whose effectiveness depends on its surrounding temperature and concentration. The optimum inhibition efficiency of 78.7% after 24 h for 1 g/L chrysin at 298 K indicates that the performance of chrysin, as a pure compound, compares favorably with other phytocompounds and plant extracts investigated under similar conditions. However, the inhibition efficiency decreased to 62.5% and 51.8% at 318 K after 48 h and 72 h, respectively.

The novelty of this study relies on the usage of a pure compound in corrosion suppression investigation, thus eliminating the unknown influences obtainable by the presence of multi-phytocompounds in plant extracts, thereby advancing the commercialization of bio-based corrosion inhibitors.

The purpose of this paper is to evaluate the effect of titanium oxide (TiO₂) and yttrium oxide (Y₂O₃) nanoparticles-reinforced pure aluminium (Al) on the mechanical properties of hybrid aluminium matrix nanocomposites (HAMNCs).

The HAMNCs were fabricated via a vacuum die-assisted stir casting route by a two-step feeding method. The varying weight percentages of TiO₂ and Y₂O₃ nanoparticles were added as 2.5, 5, 7.5 and 10 Wt.%.

Scanning electron microscope images showed the homogenous dispersion of nanoparticles in Al matrix. The tensile strength by 28.97%, yield strength by 50.60%, compression strength by 104.6% and micro-hardness by 50.90% were improved in HAMNC1 when compared to the base matrix. The highest values impact strength of 36.3 J was observed for HAMNC1. The elongation % was decreased by increasing the weight percentage of the nanoparticles. HAMNC1 improved the wear resistance by 23.68%, while increasing the coefficient of friction by 14.18%. Field emission scanning electron microscope analysis of the fractured surfaces of tensile samples revealed microcracks and the debonding of nanoparticles.

The combined effect of TiO₂ and Y₂O₃ nanoparticles with pure Al on mechanical properties has been studied. The composites were fabricated with two-step feeding vacuum-assisted stir casting.

This research aimed to find out both direct and mediating relationships between the fear of COVID-19 (FC) and the usage of digital financial services (UDFS) via mediator financial anxiety (FA). It also attempted to ascertain the moderated effect of education of small and medium-sized enterprise (SME) owners (ESO), i.e. business degree holders (BDH) vs nonbusiness degree holders (NBDH), in the relationship between FC and the UDFS.

This research employed a simple random sampling technique. In total, 387 complete responses were collected from Pakistani SMEs. The complete analysis was performed using Statistical Package for the Social Sciences (SPSS) 23, AMOS 24, Process Marco 4.1, and Interaction 1.7.

According to the findings, FC leads to UDFS and FA mediates this relationship. Additionally, the findings show that the ESO between FC and UDFS was moderated. However, conditional analysis shows that BDH-SME owners strengthened the moderated relationship between FC and UDFS compared to NBDH-SME owners, who did not show any relationship.

Policymakers might use the study's findings to promote business education, which has been recognized as essential for making sound financial decisions. Finally, because the study is cross-sectional, the authors are unable to draw definitive generalizations.

The key novelty of this research work lies in the inclusion of FA as a mediator and the education of SME owners as a moderator in understanding the relationship between FC and the UDFS. This study illuminated the positive aspects of the COVID-19 epidemic based on the theory of emotional finance, risk avoidance theory and theories of emotion.

Despite the opportunities of digital twins (DTs) for smart buildings, limited research has been conducted regarding the facility management stage, and this is explained by the high complexity of accurately representing and modelling the physics behind the DTs process. This study thus organises and consolidates the fragmented literature on DTs implementation for smart buildings at the facility management stage by exploring the enablers, applications and challenges and examining the interrelationships amongst them.

A systematic literature review approach is adopted to analyse and synthesise the existing literature relating to the subject topic.

The study revealed six main categories of enablers of DTs for smart building at the facility management stage, namely perception technologies, network technologies, storage technologies, application technologies, knowledge-building and design processes. Three substantial categories of DTs application for smart buildings were revealed at the facility management stage: efficient operation and service monitoring, efficient building energy management and effective smart building maintenance. Subsequently, the top four major challenges were identified as being “lack of a systematic and comprehensive reference model”, “real-time data integration”, “the complexity and uncertainty nature of real-time data” and “real-time data visualisation”. An integrative framework is finally proposed by examining the interactive relationship amongst the enablers, the applications and the challenges.

The findings could guide facility managers/engineers to fairly understand the enablers, applications and challenges when DTs are being implemented to improve smart building performance and achieve user satisfaction at the facility management stage.

This study contributes to the knowledge body on DTs by extending the scope of the existing studies to identify the enablers and applications of DTs for smart buildings at the facility management stage and the specific challenges.

Prior research suggests that collaboration is key to sustainable community development and environmental management, and peer-to-peer learning (P2PL) may facilitate community building and collaborative learning skills. This study aims to examine the effect of P2PL on the enhancement of environmental management and sustainable development skills, community building and social capital (i.e. connectedness) and understanding of course learning objectives.

Quantitative and qualitative longitudinal survey data was collected in a sustainable development focused course offered at a large American public university that uses P2PL to explicitly facilitate community building and collaborative skills. Safety precautions and changing locational course offerings due to the COVID-19 pandemic in years 2020, 2021 and 2022 provided an opportunity to evaluate the impact of P2PL on these skills during both virtual and in-person formats. Additionally, this study compared in-course student evaluations with students taking other sustainable development-related courses with collaborative learning aspects to understand the wider effectiveness of this course structure.

This study finds that course format (virtual vs in-person) overall made no difference in either connectedness or conceptual understandings, and that students in both formats felt more connected to others than students taking other courses with P2PL. Scaffolding P2PL and supplemental peer support can yield improved connectedness and learning among students taking environmental coursework.

Sustainable development requires group collaboration and partnership building skills. Issues are consistently raised about the challenges to teaching these skills in higher education. The students and instructors in this research study identify P2PL strategies to address these challenges for in-person and virtual classroom settings.

This paper examines the influence of Shariah compliance (SC) on firms' net working capital (NWC) target and adjustment speed.

The study samples of non-financial firms taken from six Gulf Cooperation countries between 2005 and 2019 and employs static and dynamic models to answer the present study research questions.

The outcomes of the study indicate that SC is one of the major determinants of the decision made by the corporation regarding their NWC. More specifically, enterprises that are compliant with restrictions within Shariah are seen to have laid targets of their NWC at a level that exceeds that of enterprises that are not compliant. Furthermore, compared to conventional firms, they seem to have higher speed when adjusting to meet set NWC targets. Submission to Islamic laws limits the choices from which an enterprise can outsource capital from existing funding instruments. Therefore, they experience a higher expected cost of bankruptcy. That being the case, such financial managers should readily maintain and adjust to higher NWC targets to meet current corporate needs, alleviate the risk of bankruptcy and lower dependency on expensive external funding options.

To the authors’ knowledge, this is the first study to explore the influence of SC on firms' NWC target and adjustment speed.

To reconceptualize the organizational environment in a comprehensive manner, it is important to specify not just the velocity but also other aspects of turbulent environments. Concurrently, the purpose of this paper is to also propose that organizational adaptability and, particularly, the speed of adaptations are critical to moderate the impact of turbulence in the environment on organizational performance.

This paper uses a conceptual methodology to fully specify turbulent environments and commensurate managerial response appropriate for such environments. Based on a perspective borrowed from the field of fluid dynamics used to specify the phenomenon of turbulence, the authors develop a conceptual model with research propositions. Four dimensions that describe turbulence in fluid flow when applied metaphorically offer a comprehensive view of the organizational environment.

An extreme, unanticipated, sudden onslaught resulting in a prolonged disrupted environment such as during the recent coronavirus crisis is best characterized as having caused turbulent environmental conditions. Management theories have addressed disruptions as high-velocity environments in the context of rapid changes in information technology. With a broadened conceptualization of the organizational environment to better capture extreme disruptions, the authors provide a comprehensive model appropriate for turbulent environmental conditions and offer research directions for scholarly pursuit.

This paper provides a new perspective from the physical sciences to better conceptualize organizational environments during extreme disruptions such as in turbulent environmental conditions.