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The application of lean and quality improvement methods is very common in process improvement projects at organisational levels. The purpose of this research is to assess the adoption of Lean Six Sigma™ approaches for addressing a complex process-related issue in the coal industry.

The sticky coal problem was investigated from the perspective of process-related issues. Issues were addressed using a blended Lean value stream of supply chain interfaces and waste minimisation through the Six Sigma™ DMAIC problem-solving approach, taking into consideration cross-organisational processes.

It was found that the tendency to “solve the problem” at the receiving location without communication to the upstream was, and is still, a common practice that led to the main problem of downstream issues. The application of DMAIC Six Sigma™ helped to address the broader problem. The overall operations were improved significantly, showing the reduction of sticky coal/wagon hang-up in the downstream coal handling terminal.

The Lean Six Sigma approaches were adopted using DMAIC across cross-organisational supply chain processes. However, blending Lean and Six Sigma methods needs to be empirically tested across other sectors.

The proposed methodology, using a framework of Lean Six Sigma approaches, could be used to guide practitioners in addressing similar complex and recurring issues in the manufacturing sector.

This research introduces a novel approach to process analysis, selection and contextualised improvement using a combination of Lean Six Sigma™ tools, techniques and methodologies sustained within a supply chain with certified ISO 9001 quality management systems.

The extant literature on expatriate adjustment primarily highlights the role of host country nationals (HCNs) in supporting expatriates during international assignments. However, there is a dearth of research exploring the expatriates’ socialization process in establishing interpersonal relationships with HCNs. Additionally, the pivotal element of expatriates seeking credible HCN sources, fundamental for fostering these relationships for adjustment, remains largely unexamined in the context of expatriate literature. Thus, this study addresses these gaps by proposing a conceptual model to provide a more comprehensive understanding of the expatriate adjustment process.

This conceptual paper draws upon the theoretical framework of social identity theory to elucidate how socialization processes initiated by the parent organization and the expatriate shape the expatriate’s perception of HCN credibility. This perception, in turn, serves as the foundation for building a robust support system, ultimately leading to expatriate adjustment.

The proposed model explores the nuanced dimensions of expatriate adjustment, emphasizing the complex dynamics between expatriates and host country nationals during individualized socialization. This model aims to assess the credibility of HCNs in the eyes of expatriates and understand the role of the institutionalized socialization process. Further, the model investigates the influence of perceived similarity traits in the examined relationship, shedding light on the interplay of these factors and their impact on the expatriate’s adjustment to the international assignment.

The study’s findings offer practical insights for organizations looking to enhance their support systems for expatriates, emphasizing the importance of nurturing interpersonal relationships and the credibility of HCNs.

This study contributes to the expatriate literature by shedding light on the often-overlooked interpersonal relationship between expatriates and HCNs. Doing so opens new avenues for further research, offering a fresh perspective on the expatriate adjustment process.

This study aims to examine the literature from the Web of Science database published on board committees between 2002 and 2023 and outline the quantitative summary, journey of board committees’ research and suggest future research directions.

This study examines bibliometric-content analysis combined with a systematic literature review of articles on board committees to document the summary of the field. The authors used co-citation, co-occurrence and cluster analysis under bibliometric-content analysis to present the field summary.

Board committee composition, such as their gender, independence and expertise, as well as factors affecting corporate governance, such as reporting quality, earnings management and board monitoring, all have a significant impact on board committee literature. The field is getting growing attention from authors, journals and countries. Nevertheless, there is a need for further exploration in areas like expertise, member age and tenure, the economic crisis and the nomination and remuneration committee, which have not yet received sufficient attention.

This paper has both theoretical and practical contributions. From a theoretical perspective, this study substantiates the prevalence of agency theory within board committee literature, reinforcing the foundational role of agency theory in shaping discussions about board committees. On practical ground, the comprehensive overview of board committee literature offers scholars a road map for navigating this field and directing their future research journey. The identification of research gaps in certain areas serves as a catalyst for scholars to explore untapped dimensions, enabling them to strengthen the essence of the committees’ performance.