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This study aims to form composite solid lubricant coatings on the surface of bearing steel, which can significantly improve the tribological properties of thrust cylindrical roller bearings (TCRBs). Phosphating films possess microscopic porosity that typically needs to be sealed with oil, grease or wax. Due to its unique crystal structure, the phosphating film itself also exhibits a certain degree of lubricity. In this study, solid lubricants are used to fill the pores of the phosphating film. By combining the phosphating film with solid lubricants, lubrication and wear reduction can be achieved.

In this study, the surfaces of the shaft washer (WS) and seat washer (GS) were treated with zinc-phosphating. Subsequently, a solid lubricant solution (polytetrafluoroethylene [PTFE], MoS₂ and graphite) was sprayed onto the phosphated samples at concentrations of 1 , 2  and 3 g/L. The porous and adsorptive nature of the phosphating film was used to embed the solid lubricant particles into the film, thus forming a composite lubrication layer containing solid lubricants on the surface of the bearing steel.

The addition of solid lubricant materials has shown significant potential in reducing wear losses compared with phosphated samples without such additives. Increasing the amount of solid lubricant added can facilitate the formation of a transfer film, which further enhances the protective properties. However, it is important to note that excessive amounts of solid lubricant material can contribute to seizure, leading to increased wear losses of the cage and a higher average coefficient of friction (ACOF).By spraying a PTFE solution with a concentration of 2 g/L, the lowest ACOF and cage wear loss were achieved, resulting in reductions of 60.5% for the ACOF and 89.4% for the cage wear loss. Similarly, when spraying a graphite solution with a concentration of 3 g/L, the lowest wear losses for GS and WS were observed, with reductions of 51.7% for GS wear loss and 38.9% for WS wear loss.

The combination of the phosphating film and solid lubricants aims to achieve lubrication and wear reduction, providing a new approach to wear-resistant technology for TCRBs.

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-07-2023-0231/

The purpose of this paper is to investigate school principals' leadership styles in Cyprus in relation to students' support for special education needs within the context of inclusive education.

The original type of evidence was qualitative empirical research through the examination of four case studies in school organizations with a high number of students with special education needs. Using the interview protocol, data on school principals' leadership styles were collected from school principals and teachers. The empirical development theory method was used to analyze the data.

The findings suggest that in the respective school organizations, a combination of all leadership styles can support the desired outcomes of students with special education needs, thereby promoting the inclusive education aspect in school organizations. However, there was a preference for the entrepreneurial leadership style, which connects the external leadership dimension with school principalship.

These findings could assist in shaping a specific educational policy that includes professional development for school principals in entrepreneurship in order to support students with special education needs. Furthermore, the results could be compared to those in other contexts where school principals' leadership styles and practices are promoted in relation to the support of students with special education needs.

The purpose of this study Artificial intelligence (AI) is one of the important emerging trends in information technology and is slowly being implemented in libraries. The researchers have presented a brief strengths, weaknesses, opportunities and threats (SWOT) analysis of the application of AI in Pakistani university libraries.

This study uses an ethnographic approach for data retrieval. Five chief librarians were interviewed by phone, during which they were asked to identify one key strength, weakness, opportunity and threat in terms of introducing AI technologies. The researchers have used a standard SWOT matrix to report the respondents’ comments.

AI is already slowly being introduced into Pakistani university libraries. While commenting on ways in which AI could help their libraries deliver more innovative services and better meet user needs, respondents expressed concern about the investment required in funding, time and staff.

Further study is indicated to identify existing AI implementations in Pakistani university libraries and to assess relevant library users’ perspectives. This study is limited to brief, qualitative data; its main purpose is to validate the use of a SWOT analysis.

Given that AI-based tools are already being used in libraries to some degree regardless of location, now is an opportune time to develop strategies for implementing AI technologies more widely. A SWOT analysis can be used to identify and categorize challenges and risks specific to AI in a logical way to support strategic decision-making.

To date, no SWOT analysis has been conducted in the context of AI applications in libraries, let alone specifically university libraries in Pakistan.

To break the chains of inequality for access to education for marginalized groups across India and move toward an egalitarian society, where all people can live with dignity and fulfill their dreams, the need of the hour is to strengthen the education system and prepare teachers with secular and reformative thinking. This chapter attempts to examine the problems of various marginalized groups in Indian society and their educational provisions. This work also aims to analyze several issues and challenges related to preparing teachers for inclusive schools and to draw attention to the need to reframe and revise teacher education programs and enforce inclusive teacher education practices in India to promote inclusion.

In Aotearoa New Zealand (Aotearoa), bicultural education has reinforced the privilege of settler colonial knowledge with te reo Māori, the language of Indigenous people of Aotearoa New Zealand, used as decorative labels to create a bicultural étagère. Similarly, for inclusive education ableist notions of personhood have maintained approaches that attempt to assimilate the person into the educational hood. In this chapter, research findings from a doctoral case study highlight the intersecting nature of ableism and racism in the foundations of the Aotearoa education system. The author argues that Indigenous knowledge and customs in a bicultural Initial Teacher Education (ITE) program that prepares early childhood educators promote positive constructions of inclusion. Using the tenets of DisCrit and the Alaskan Cultural Standards as tools of analysis, key bicultural practices that support inclusion are identified and discussed. In addition, the inclusive opportunities and the fragility of meaningful intentions are highlighted.

The purpose of this paper is to investigate a novel approach toward electromagnetic launch.

The field of linear electromagnetic acceleration aims at accelerating macroscopic masses (up to several kg) to speeds in excess of 2 km/s. This can be achieved using accelerators of the railgun type. The innovation of this work lies in the use of multiphase current instead of the classically used quasi-direct current (DC). The approach taken is to work out in a first step the potential performance of such a configuration, for example, by showing that a constant propulsive force can be realized. Next, the necessary changes for the system setup were carefully analyzed. Both the accelerator and the power supply have to be considerably modified with regard to the classical approach.

Thorough analysis of the electromagnetic behavior of the launcher including nonlinear effects lead to an innovative system design which is considered to be the main finding of the work presented here. Moreover, a prototype was build. The preliminary experimental results obtained are in very good agreement with corresponding simulations validating the underlying modeling approach.

For the purpose of this paper, power levels of only 450 kVA are considered. However, this research can be used to design more powerful devices in the future.

While DC powered railguns are modeled very well in a variety of papers, the use of multiphase alternating current is not very well discussed yet. It could be of value for launch scenarios, for which very high speeds are required such as the launch of micro satellites to space.

The purpose of this paper is to optimize and improve a bipolar charge transport (BCT) model used to simulate charge dynamics in insulating polymer materials, specifically low-density polyethylene (LDPE).

An optimization algorithm is applied to optimize the BCT model by comparing the model outputs with experimental data obtained using two kinds of measurements: space charge distribution using the pulsed electroacoustic (PEA) method and current measurements in nonstationary conditions.

The study provides an optimal set of parameters that offers a good correlation between model outputs and several experiments conducted under varying applied fields. The study evaluates the quantity of charges remaining inside the dielectric even after 24 h of short circuit. Moreover, the effects of increasing the electric field on charge trapping and detrapping rates are addressed.

This study only examined experiments with different applied electric fields, and thus the obtained parameters may not suit the experimental outputs if the experimental temperature varies. Further improvement may be achieved by introducing additional experiments or another source of measurements.

This work provides a unique set of optimal parameters that best match both current and charge density measurements for a BCT model in LDPE and demonstrates the use of trust region reflective algorithm for parameter optimization. The study also attempts to evaluate the equations used to describe charge trapping and detrapping phenomena, providing a deeper understanding of the physics behind the model.

Disciplinary school exclusion has negative consequences in terms of academic achievement, well-being, mental health, and future prospects. Permanent and temporary school exclusions rates in England are much higher than in the rest of the United Kingdom and disproportionately affect students with special needs, from care backgrounds, living in poverty, and from particular ethnic backgrounds. This chapter argues that looking at the issue of school exclusion is another way of looking at issues of inclusion and diversity in schools and that these are central concerns for initial teacher education programs. The chapter illustrates this argument by reporting some of the preliminary findings from the 4-year ESRC funded project The Political Economies of School Exclusion Across the UK (2019–2023) led by the Excluded Lives Research team at the University of Oxford. The main objective of this research has been to develop a home international multidisciplinary understanding of the landscapes of political economies and the experiences and consequences of school exclusion across the United Kingdom.

Internationally, and more specifically in South Africa, education is regarded as a guiding force to achieve a more humane and inclusive society by ensuring that human rights and social justice principles are embedded and implemented in all educational practices. Inclusive education policies encourage a growth mindset in asserting the belief that all children can learn. However, the implementation of a successful inclusive education system continues to be a challenge. Through an autoethnography, I have identified three main concerns that I believe contests the conceptualisation, philosophical framework and practice of inclusive education. These include understanding inclusion, a fixed mindset and curriculum inflexibility, i.e. stuck in a fixed mindset. I also make some suggestions on how to address these concerns.