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Additive manufacturing (AM), also known as three-dimensional (3D) printing technology, has been used in the health-care industry for over two decades. It is in high demand in the health-care industry due to its strength to manufacture custom-designed and personalized 3D constructs. Recently, AM technologies are being explored to develop personalized drug delivery systems, such as personalized oral dosages, implants and others due to their potential to design and develop systems with complex geometry and programmed controlled release profile. Furthermore, in 2015, the US Food and Drug Administration approved the first AM medication, Spritam® (Apprecia Pharmaceuticals) which has led to tremendous interest in exploring this technology as a bespoke solution for patient-specific drug delivery systems. The purpose of this study is to provide a comprehensive overview of AM technologies applied to the development of personalized drug delivery systems, including an analysis of the commercial status of AM based drugs and delivery devices.

This review paper provides a detailed understanding of how AM technologies are used to develop personalized drug delivery systems. Different AM technologies and how these technologies can be chosen for a specific drug delivery system are discussed. Different types of materials used to manufacture personalized drug delivery systems are also discussed here. Furthermore, recent preclinical and clinical trials are discussed. The challenges and future perceptions of personalized medicine and the clinical use of these systems are also discussed.

Substantial works are ongoing to develop personalized medicine using AM technologies. Understanding the regulatory requirements is needed to establish this area as a point-of-care solution for patients. Furthermore, scientists, engineers and regulatory agencies need to work closely to successfully translate the research efforts to clinics.

This review paper highlights the recent efforts of AM-based technologies in the field of personalized drug delivery systems with an insight into the possible future direction.

The purpose of this study is to provide evidence to support an emerging theory that interpersonal conflict is the primary cause of workplace stress among a self-selected sample of Irish construction managers.

Eighteen construction managers working in Ireland were recruited for this study. Using semi-structured interviews and interpretative phenomenological analysis as the research methodology, the causes of their workplace stress were investigated.

Participants reported that the principal cause of their workplace stress was high levels of interpersonal conflict between colleagues. The effects of this interpersonal conflict included avoidance behaviour, ill health, absences from the workplace and loss of productivity issues. Deadlines, penalty clauses, lack of appreciation, cliques, costs, communication, temporary contracts and delays were also reported stressors.

A limitation of the study is the small sample of 18 construction managers and the limited geographical area.

The social implications of this study could be to clearly identify that interpersonal conflict may be under reported in the construction industry, and there is a possibility that it is being misclassified as other workplace behaviours such as bullying, harassment and workplace violence. If this is so, this could aid future researchers in addressing this challenging workplace behaviour.

The current consensus in the literature is that the three main causes of workplace stress are bullying, harassment and violence. However, the role and importance of interpersonal conflict as reported in this study, with the exception of North America and China, is not reflected in the wider health and safety research literature. In addition, interpersonal conflict and its reluctance to be reported is largely absent from construction safety research. The findings of this study may be explained if the workplace stress research community is currently misclassifying interpersonal conflict as a manifestation of bullying, harassment or violence. If this is the case, interpersonal conflict needs further research. This is to establish if this cause of construction-related workplace stress needs to be reconsidered as a standalone phenomenon in the wider family of challenging workplace behaviours.

The importance of socially just leadership has been increasingly acknowledged in recent years as integral for tackling issues of disadvantage and inequality across education and schooling systems. However, there are still remaining questions about what these leadership practices look like in the everyday work of school leaders. This chapter draws on a research project to embed Indigenous perspectives in schools as an example of socially just leadership. The links between Indigenous communities and schools are a key focus area for improving educational outcomes for Indigenous students. This project sought to bring Indigenous community members into classrooms in six schools in New South Wales, Australia. Community members were recruited to work with teachers as co-constructors of learning activities that explicitly value and work with Indigenous perspectives. This chapter outlines the positive outcomes from this project as well as challenges faced by schools, teachers, principals, and community members as part of this culturally responsive work. The practices of community members, teachers, and principals are theorized using the notion of culturally responsive leadership. The chapter argues for an approach to leadership that is grounded in culturally responsive understandings to improve the educational outcomes and opportunities for Indigenous students and the cultural understanding and awareness of non-Indigenous students, to better promote reconciliation. This chapter provides a concrete example of powerful leadership practices that are working towards equity and social justice for their schools and communities. While the cases are specifically from the Australian context, they are relevant for a variety of schooling contexts and leadership practices.

Our core aim was to explore the perceptions of precarious workers on the ways in which the pandemic impacted their relationships with their employing organizations and to explore the ways in which they viewed the pandemic as (re)shaping the dynamics of precarious work and the extent to which they saw the pandemic as contributing to substantive improvement in their working lives or whether the pandemic is exacerbating their marginalisation.

We adopted an approach akin to grounded theory in an exploratory research design and utilized in-depth, semi-structured interviews as the most apposite method of data collection. Our research design centred on a two-phase data collection approach, which were intended to gather data at two points. First, during the most difficult part of the pandemic, which we describe as the “Lockdown phase” and second, during the period wherein the pandemic rules were eased but elements of the risks remained; the “New Normal phase”.

This article reports the findings of a longitudinal study of the reflections and interpretations of precarious workers on the impacts of the pandemic on their relationships with their employing organizations. We supply findings across three periods – pre-the COVID-19 pandemic, during the pandemic lockdown phase and post-lockdowns in the “new normal phase”.

The first contribution of the study is the importance of “voice” and giving voice to workers in nontraditional, fragmented and marginalised employment. Our study builds on these contributions by exploring the journeys of precarious workers and is particularly valuable in that we explore the perceptions of these workers across the societal, organizational and employment/working turbulence of the pandemic. The second contribution arises from the insights developed through studying the working lives and experiences of precarious workers longitudinally rather than in a single, snapshot fashion. A third contribution centres on how precarious workers felt they were treated by others during both the two phases of the study. The insights here are complex and, in parts, contradictory – reflecting the interpretations and conflicted opinions/deeds of those connected with precarious workers.

It is particularly important for scholars to understand the ways in which the pandemic shaped (or reshaped) the dynamics of precarious work and to understand whether the evolving conceptions of the centrality of such workers as “essential” during the pandemic (Crane and Matten, 2021) contributed to substantive or merely illusory, improvements in their working lives. Thus, we analyse the reflections of precarious workers on changes to their working lives that are linked to the pandemic.

In this study, two postprocessing techniques, namely, conventional burnishing (CB) and ultrasonic-assisted burnishing (UAB), were applied to improve the fatigue behavior of 316 L stainless steel fabricated through selective laser melting (SLM). The effects of these processes on surface roughness, porosity, microhardness and fatigue performance were experimentally investigated. The purpose of this study is to evaluate the feasibility and effectiveness of ultrasonic-assisted burnishing as a preferred post-processing technique for enhancing the fatigue performance of additively manufactured components.

All samples were subjected to a sandblasting process. Next, the samples were divided into three distinct groups. The first group (as-Built) did not undergo any additional postprocessing, apart from sandblasting. The second group was treated with CB, while the third group was treated with ultrasonic-assisted burnishing. Finally, all samples were evaluated based on their surface roughness, porosity, microhardness and fatigue performance.

The results revealed that the initial mean surface roughness (Ra) of the as-built sample was 11.438 µm. However, after undergoing CB and UAB treatments, the surface roughness decreased to 1.629 and 0.278 µm, respectively. Notably, the UAB process proved more effective in eliminating near-surface pores and improving the microhardness of the samples compared to the CB process. Furthermore, the fatigue life of the as-built sample, initially at 66,000 cycles, experienced a slight improvement after CB treatment, reaching 347,000 cycles. However, the UAB process significantly enhanced the fatigue life of the samples, extending it to 620,000 cycles.

After reviewing the literature, it can be concluded that UAB will exceed the capabilities of CB in terms of enhancing the surface roughness and, subsequently, the fatigue performance of additive manufactured (AM) metals. However, the actual impact of the UAB process on the fatigue life of AM products has not yet been thoroughly researched. Therefore, in this study, this paper used the burnishing process to enhance the fatigue life of 316 L stainless steel produced through the SLM process.