Search results

This paper aims to print 3D structures from polymers that resist bacterial attachment by reactive jetting of acrylate monomers.

The first step towards printing was ink development. Inks were characterised to carry out an estimation of their potential printability using the Z parameter to predict stable jetting conditions. Printability conditions were optimised for each ink using a Dimatix DMP-2800, which enabled 3D structures to be fabricated.

UV photo-initiated polymers, which resist bacterial attachment, were found to be printable using piezo-based inkjet printers. The waveform required for each ink depends on the value of the Z parameter. Once the waveform and the printability parameters were optimised, 3D objects were fabricated.

This methodology has been confirmed as an effective method to 3D print materials that have been demonstrated to be bacteria resistant. However, ink curing depends on modification of some parameters (such as photoinitiator concentration or UV exposure time) which would result in an improvement of the curing process post jetting.

The combination of inkjet based 3D printing with new materials resistant to bacterial attachment means the possibility of building customised medical devices with a high level of complexity and bespoke features can be fully realised. The scope and variability of the devices produced will exceed what can be achieved using standard fabrication methodologies and can be applied to reduce the incidence of device associated infections and to address increased morbidity, mortality and health care costs associated with nosocomial infections.

In this paper, the novel use of materials that resist bacterial attachment has been described to build 3D structures using material jetting. Its value lies on the potential impact this methodology could produce in the biomedical device and research fields.

The purpose of this paper is to describe handover in the emergency centre from the perspective of prehospital emergency care providers in Johannesburg, South Africa. Reference to emergency centre handover from the prehospital perspective will have particular relevance to all deliverers of emergency centre handover.

A purposive, cross-sectional design addressed the study aim by using a purpose-designed, validated, paper-based questionnaire to collect data relating to prehospital emergency care personnel's perspectives on emergency centre handover.

There were 175 completed questionnaires collected from South African prehospital personnel within the Johannesburg area. The response rate was 175/290 or 62%. Training on handover was described as poor. There was a general appreciation of mnemonics and how well they ensured that all relevant information was handed over. However, this was countered by poor familiarity of common mnemonics. Perception of the accuracy of their own and observed prehospital handovers was generally positive. Handover length was generally perceived to be appropriate. The qualification of emergency centre personnel was perceived to impact on how handovers were received.

The study was limited to one geographical area and did not include all potential participants in the study area. The self-reported data collection meant that there was a risk of self-report bias. These factors may have negatively affected the generalisability of the data.

This paper seeks to describe perceptions related to emergency centre handover from the perspective of prehospital emergency care personnel. In doing so, it is postulated that there is the potential to use these findings to improve certain aspects of emergency centre handover.

Aerospace is a demanding technological and industrial sector. Several regulations and policies via innovative digital transformation have been integrated to impact production systems and supply chains, including safety measures. Studies demonstrated that the Fourth Industrial Revolution (4IR) technologies could enhance productivity growth and safety measures. The 4IR role in influencing airlines’ growth is yet to receive in-depth studies in South Africa. Thus, this study aims to investigate the role of 4IR technologies in influencing airlines’ growth in South Africa.

This research used a qualitative research method. Primary data were compiled via 56 face-to-face semi-structured interviews with major stakeholders. The study achieved saturation. A thematic method was used to analyse the collected data.

Findings reveal the nine major factors influencing South African airlines’ growth in the 4IR era. This includes investment in ergonomics applications and research, governance is driven by 4IR, collaboration and incorporation of 4IR concepts, partnership with drone technology and high precision and efficiency with 4IR. Others are reskilling and upskilling, investment in 4IR software, policies to promote 4IR usage in the industry and policies to reduce human interface.

Understanding the relative significance of 4IR technologies’ role in airlines’ growth can assist critical stakeholders in promoting innovative policies and regulations tailored towards digitalised aerospace. Thus, the study contributes to strategies to improve digital innovation, airline growth and safety as components of the air travel demands in South Africa.

Boards presently are considered the most critical component in improving corporate governance (CG). Board diversity is increasingly being recommended as a tool for enhancing firm performance. Academic research and regulatory action regarding board diversity are focussed mainly on gender and ethnic composition of boards. However, the perspective of board members on board diversity and its impact is mostly missing. Moreover, while strategic leadership perspective suggests that a broader set of upper echelon’s characteristics may shape their actions, empirical evidence investigating the impact of less-explored attributes of diversity is almost non-existent. While the research on the input–output relationship between board diversity and firm performance remains equivocal, an intervening relationship between board diversity and board effectiveness needs to be understood. The purpose of this paper is to address all three limitations and explore the subject from board members’ perspective.

The paper presents the findings of qualitative, exploratory research conducted by interviewing 42 board members of FTSE 350 companies. The data are analysed thematically.

The findings of the research suggest that board members of FTSE 350 companies consider the diversity of functional experience to be a critical requirement for boards’ role-effectiveness. Functionally diverse boards manage external dependencies more effectively and challenge assumptions of the executive more efficiently, thus improving CG. The findings significantly contribute to the literature on board diversity, as well as to strategic leadership theory and other applicable theories. The research is conducted with a relatively small but elite and difficult to approach set of 42 board members of FTSE 350 companies.

The paper makes a unique and significant contribution to praxis by presenting the perspective of practitioners of CG – board members. The findings may encourage board nomination committees to seek board diversity beyond the gender and ethnic characteristics of directors. The findings may also be relevant for policy formulation, as they indicate that functionally diverse boards have improved effectiveness in a range of board roles.

Board diversity is about building a board that accurately reflects the make-up of the population and stakeholders of the society where the company operates. The aim of board diversity is to cultivate a broad range of attributes and perspectives that reflects real-world demographics as boards need to continue to earn their “licence to operate in society” as organisations have a responsibility to multiple constituents and stakeholders, including the community and the wider society within which they exist. Building social capital through diversity has value in the wider context of modern society and achieving social justice.

The paper makes an original and unique contribution to strategic leadership theory by strengthening the argument of the theory. The paper explores beyond widely researched attributes of gender and ethnicity on boards and explores the impact of a less-researched characteristic of directors – their functional experience. Moreover, the paper opens the “black box” of CG – boards, and presents the perspectives of board members. The findings indicate that board members in FTSE 350 boards define diversity more broadly than academics and regulatory agencies often do.

The Italian government addressed the first wave of its COVID-19 outbreak with a series of social restrictions and calculative practices, all branded with the slogan #istayathome. The hashtag quickly went viral, becoming both a mandate and a mantra and, as the crisis played out, we witnessed the rise of the Italian social movement #istayathome. This study examines how the government's calculative practices led to #istayathome and the constituents that shaped this social movement.

The authors embrace social movement theory and the collective identity perspective to examine #istayathome as a collective action and social movement. Using passive netnography, text mining and interpretative text analysis enhanced by machine learning, the authors analysed just over 350,000 tweets made during the period March to May 2020, each brandishing the hashtag #istayathome.

The #istayathome movement gained traction as a response to the Italian government's call for collective action. Thus, people became an active part of mobilising collective responsibility, enhancing the government's plans. A collective identity on the part of the Italian people sustained the mass mobilisation, driven by cohesion, solidarity and a deep cultural trauma from COVID-19's dramatic effects. Popular culture and Italy's long traditions also helped to form the collective identity of #istayathome. This study found that calculative practices acted as a persuasive technology in forming this collective identity and mobilising people's collective action. Numbers stimulated the cognitive, moral and emotional connections of the social ties shaping collective identity and responsibility. Thus, through collective identity, calculative practices indirectly influenced mass social behaviors and the social movement.

This study offers a novel theoretical perspective and empirical knowledge to explain how government power affects people's culture and everyday life. It unveils the sociological drivers that mobilise collective behaviors and enriches the accounting literature on the effects of calculative practices in managing emergencies. The study contributes to theory by providing an understanding of how calculative practices can influence collective behaviors and can be used to construct informal networks that go beyond the government's traditional formalities.

This study sought to understand how a leader’s leadership is affected by their salient identities. To achieve this, the study employed a qualitative paradigm using a phenomenological methodology. Ultimately, the study worked to craft a shared understanding of how identity is experienced by leaders within the context of their own leadership. Textual descriptions are provided for each of the three themes of awareness and salience, leader differentiation and context affiliation, and identity as a situational factor in leadership. Implications for research and practice are highlighted for leadership educators.

Using literature as the catalyst for change is grounded in Freirean pedagogy. In the case of the Oaks Leadership Scholars, leadership educators are crafting an environment for building transformative leadership skills using texts calling for the enactment of justice and equity as a starting point for capacity building and self-reflection. Students read the texts individually, then in conjunction with workshop-style instruction, discuss the texts in formal sessions. To extend their thinking, students have the opportunity to attend optional reading circles (including a formal lesson and informal discussion) designed to enhance their critical thinking and development. Discussions in these reading circles often move in directions that allow for meaning-making beyond the narrow text focus into broader, real-world applications. Project co-directors report that the texts and subsequent discussion have energized students to act and engage.

This paper adds to the literature on societal grand challenges by shifting the focus away from business firms and other formal organizations as key actors in addressing such challenges toward the inherent organizing capacity that lies in the use of language itself. More specifically, we focus on the organizing capacities of metaphor-based communication, seeking to ascertain which qualities of metaphors enable them to co-orient collective action toward tackling grand challenges. In addressing this question, we develop an analytical framework based on two qualities of metaphorical communication that can provide such co-orientation: a metaphor’s (a) vividness and (b) responsible actionability. We illustrate the usefulness of this framework by assessing selected metaphors used in the public discourse to make sense of and organize collective responses to the Covid-19 pandemic, including the flu metaphor/analogy, the war metaphor, and the combined metaphor of “the hammer and the dance.” Our paper contributes to extant research by providing a means to assess the co-orienting potential of metaphors in bridging varied interpretations. In so doing, our framework can pave the way toward more responsible use of metaphorical communication in tackling society’s grand challenges.

Singapore has had a dramatic spike in coronavirus infections in early 2020, with thousands of new cases linked to clusters in migrant workers (MWs) dormitories. To control the spread, the Government attempted to isolate the dormitories, test workers and move symptomatic patients into quarantine facilities. But those measures have left thousands of them trapped in their dormitories, living in cramped conditions that make social distancing near impossible. This paper investigates how COVID-19 has impacted the lives of these workers in varied ways and highlights the migrant workers' belief if Singapore’s effort has been enough for them during the COVID-19 pandemic? The focus is mainly on the low-skilled workers from India and Bangladesh, who are prone to be affected in various ways by COVID-19. My collected data show that migrant workers are grateful to the Singapore state for the support extended during COVID-19. I used the concept of subcultures to explain the condition of the workers in the state of Singapore. Because they expect so little social protection from the state, they are genuinely grateful for its support during the pandemic.