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There is increasing interest in the connection between Industry 4.0 (I4.0) and operational excellence approaches; however, studies on the integration between Six Sigma (SS) and I4.0 have been absent from the literature. Integration with I4.0 technologies can maximize the positive effects of SS. The purpose of this study is to understand what types of relationships exist between SS and I4.0 and with I4.0's technologies, as well as the benefits derived from this integration and future directions for this field of study.

A Systematic Literature Review (SLR) was carried out to analyze studies about connections between I4.0 technologies and SS. SLR analyzed 59 articles from 2013 to 2021 extracted from the Web of Science and Scopus databases, including documents from journals and conferences.

The SLR identified relationships between SS and several I4.0 technologies, the most cited and with the greatest possibilities of relationships being Big Data/Big Data Analytics (BDA) and Internet of Things (IoT). Three main types of relationships were identified: (1) support of I4.0 technologies to SS; (2) assistance from the SS to the introduction of I4.0 technologies, and, to a lesser extent; (3) incompatibilities between SS and I4.0 technologies. The benefits are mainly related to availability of large data sets and real-time information, enabling better decision-making in less time.

In addition, the study can help managers to understand the integration relationships, which may encourage companies to adopt SS/Lean Six Sigma (LSS) in conjunction with I4.0 technologies. The results also drew attention to the incompatibilities between SS and I4.0 to anticipate potential barriers to implementation.

The study focuses on three previously unexplored subjects: the connection between SS and I4.0, the existing relationships with different technologies and the benefits resulting from the relationships. In addition, the study compiled and structured different types of relationships for SS and I4.0 and I4.0's technologies, identifying patterns and presenting evidence on how these relationships occur. Finally, exposes current trends and possible research directions.

In the last few years, signs of material excess by organizational and political leaders have often evoked public outcry. The paper aims to argue that there is insight to be gleaned from drawing together strands from the leadership literature with the literatures on moral economy and conspicuous consumption. The premise is that views of leader conspicuous consumption are shaped by their moral economy, the interplay between moral attitudes and economic activities. The paper seeks to juxtapose tales of Cleopatra and Antony's display of wealth with current media accounts to contribute to the leadership literature on ethics, specifically its intersection with power and narrative representation.

The paper adopts an analytic approach, with an international orientation and an interdisciplinary perspective. It acknowledges the role of narrative representation in shaping leadership and the psychological ambivalence with which societies approach their leaders' practices, focus here on desire-disdain and discipline-decadence. Cleopatra and Antony's conspicuous consumption generated a legacy of condemnation for millennia. Drawing from the retellings of their story, four moralizing representations – by Plutarch, Shakespeare, Sarah Fielding and Hollywood – are analyzed and juxtaposed with current media accounts. Altogether, the paper combines the interest in leadership across history with moralizing perspectives on the display of wealth by leaders.

The intersection of the literatures on leadership, moral economy and conspicuous consumption draws together several dynamics of relevance to leadership. First, evaluations of the display of wealth on the part of a leader are contextual: they change across time and place. Second, interpretations of conspicuous consumption involve aesthetic judgment and so sit at the nexus of morality and taste. Third, following tragedies, tales of leader conspicuous consumption offer critics another knife to dig into the fallen tragic hero. Fourth, views of conspicuous consumption are gendered. Last, conspicuous consumption by leaders attracts condemnation through support for social responsibility and sustainability.

The paper establishes a novel articulation between the literatures on leadership, moral economy and conspicuous consumption.

This study aims to investigate the busy season contagion effects on other clients of the Big 4 auditor’s local office associated with the non-timely (NT) filing(s) by large accelerated filer (LAF) client(s) of the office. Specifically, the authors examine the influence such events have on the audit quality and timeliness of other clients of that office.

Using panel data of annual NT filings of LAF clients between 2006 and 2019, the authors apply the ordinary least squares regression technique to model audit reporting lag (ARL) and the logistic regression technique to model the probability of restatements.

Controlling for audit firm, industry and year-fixed effects, the authors find that a LAF NT filing reduces audit quality and audit timeliness of other clients of the office, as measured by restatement risk and ARL. The impact on ARL is most pronounced on the medium and small clients within the office. The deteriorated audit quality is observed for medium clients.

The results of this study have practical implications for auditors and regulators. They reveal the contagion effect in the auditor’s local office with the NT LAF client. The main limitation of the study is the lack of staffing utilization data to allow for drawing conclusions on causality.

To the best of the authors’ knowledge, this is the first study to document the contagion effect of NT filings of LAF clients conducted at the auditor’s local office level.

This paper aims to unearth the essential components of Six Sigma for successful deployment and sustainment of service quality in four different organizations in the United Arab Emirates (UAE). More specifically, the paper is intended to determine the motivation to apply Six Sigma, Voice of Customer, Key Performance Indicators (KPIs), Critical-to-Quality (CTQ), readiness factors, Critical Success Factors, sustainment measures, tools and techniques used, challenges/barriers and performance impact on the company.

An exploratory research methodology with multiple case study analyses was adopted to determine the answers to the research objectives. Four case studies from different service processes of four companies were analyzed. The case studies were collated from these companies via a case study protocol with pre-defined criteria.

The analysis shows that service operation improvement projects are primarily dependent on the voice of the internal customer, with return on investment in savings as the KPI of the process. Most organizations prefer cycle time and errors as the CTQs in the Six Sigma projects. Even novice users can effectively apply the Six Sigma methodology with external experts’ assistance, mentoring and interventions. Across the case studies, it is observed that the projects were successfully deployed due to the support of top management leadership, effective communication and cross-functional teams. Employee resistance to change is the common barrier observed during the case study analysis. Eventually, in all the four case studies, Six Sigma is executed with standard tools and techniques within the define, measure, analyze, improve, control (DMAIC) approach.

The present study’s findings cannot be generalized due to the limited number of case study analyses in different ecosystems in the UAE. The authors would like to analyse and report more case studies in service quality improvement through the Six Sigma methodology to comprehend and develop a generic roadmap for the deployment of Six Sigma in the UAE service industry.

The study’s findings provide insights into commonalities and differences between the essential factors of Six Sigma deployment and sustainability in UAE companies.

The study results might help the policymakers and key decision makers in UAE and other countries understand the effectiveness of Six Sigma in service quality improvement with its essential factors for deployment.

From two bodies of literature, the purpose of this paper is to generate theory for an updated conceptual model of drivers of Six Sigma project success by integrating extant psychology theory and empirical general team project results with a history of eight recent Six Sigma projects and extant Six Sigma literature. The new theory emphasizes the need for project leads to process information simultaneously, as well as develop prioritization abilities. Also, the new theory reverses the relations of three existing theories from general team composition theory. The new theory suggests that Six Sigma belt trainers should focus more on soft skill development.

A literature review of the two bodies of literature previously mentioned.

Eight new propositions related to the success of Six Sigma projects are developed. Further, two new constructs, “project leader simultaneity of thought” and “prioritization ability” are suggested for further investigation.

The authors suggest a few practical implications: first a greater emphasis on soft skill training would be beneficial in Six Sigma belt training. A second new point of emphasis in belt training is developing greater internal locus of control in belt candidates. Third, the authors suggest that during the team member selection process a diversity of backgrounds would be beneficial to Six Sigma project success.

This paper aims to contribute to a developing literature on continuous improvement (CI), enabled by Lean Six Sigma (LSS), in higher education institutions (HEIs). It reports on the key learning points arising from the initial steps taken by an Irish university on its CI journey.

A case study strategy was adopted following a participatory research approach. This approach supports reflexivity and also provides access to all relevant documentation and staff within the case university. Thematic analysis was supported by data reduction and display techniques.

The introduction of a LSS approach rather than a reliance on lean alone introduced a structured methodology (DMAIC) that supported simplification of a number of administrative processes. A number of specific improvements were achieved including: Cycle time and cost reduction; customer or employee satisfaction; and rework and error reduction. The findings support the importance of the Readiness Factors as identified by Antony (2014), with particular insight into the role of senior and middle management, the impact of training and deployment of expertise.

This paper is based on an ongoing, longitudinal, empirical study of a single case study in Ireland.

This paper tracks the development of CI in a HEI in a longitudinal manner and adds to the emerging the literature in this area. The paper evaluates the role of management at various levels, analyses the use of LSS tools and techniques and evaluated the role of training and capacity building. Implications for Management are shared including: design and role of training programmes, role of champions at various organisational levels, including key functional areas and sustaining momentum.

Increasing competitive pressure from global markets and technological developments has resulted in the continual demand for business improvement philosophies and methodologies in operations management to address this challenge. The Six Sigma approach to business improvement has emerged in both the practitioner and academic literature as having a significant role in this area. There are many documented case studies of organizational applications of Six Sigma, where large‐scale improvements in defect and process measures have been attributed to this approach, mainly in the mass‐manufacturing sector. Moreover, there are claims, less well documented, that Six Sigma can be used as a change management approach at a strategic level and thus it can be applied to other sectors such as service industries. It is contended that there is a paucity of critical reviews of the Six Sigma literature, beyond that of descriptive accounts. Therefore, the aim of this paper is to critically review the literature of Six Sigma in relation to its effect on organizations and those that work in them. A broad theoretical perspective is used to guide the review process. The paper structure is based on the dichotomies within the Six Sigma literature, namely, what is Six Sigma — strategic change or operational methods; is Six Sigma a TQM appendage, or something new; will workers in a Six Sigma environment have more empowerment or be more controlled and is Six Sigma applicable to the service sector or only for that of the manufacturing sector?

The purpose of this paper is to critically evaluate whether a Lean Six Sigma (LSS) leadership model could be effectively utilized to resolve efficiency and effective issues like rising costs, quality of education, graduation and retention rates encountered in higher education institutions (HEIs) in the modern era.

The authors systematically reviewed the literature on key concepts of LSS and leadership in HEIs in to develop a theoretical model using an inductive theory-building approach in accordance with the exploratory nature of the study.

The results of the study proposed a conceptual LSS leadership framework, which provides a basis for testing of LSS leadership representations in HEIs. The results suggest that LSS leadership has advantages for HEI to overcome currents issues and challenges.

This research is a theoretical study based on the existing literature that identified characteristics that may be adopted in higher education. The proposed LSS leadership framework is based upon leadership, statistical thinking, continuous change and improvement. This model is based upon service and the concepts of adaptive, rather than technical work, of leaders in higher education.

The proposed LSS leadership framework brings new aspects and perspectives of leadership in HEIs. LSS leadership model has its practical meaning in providing a fundamental base for HEIs to overcome challenges, fulfill missions, and sustain improvements.

HEIs are a foundation for principles of democracy, equality and diversity. HEIs have been a path for citizens but HEIs are facing challenges that are reducing the ability of individuals to improve themselves. Leadership of HEI needs to incorporate new principles to adapt to a changing society.

LSS project leaders have achieved improved bottom line results and customer satisfaction in a wide range of industries, but LSS application in the HEIs remains to be explored. This paper proposes an effective LSS leadership model, which can help improve the quality of education, reduce non-value added costs and enhance operational efficiency of HEIs.

This study aims to present Lean Six Sigma (LSS) deployment and sustainment strategies for the healthcare sector from a multi-level perspective. The objective is to present LSS implementation insights to enable policymakers, practitioners and academicians to test and develop an LSS framework for healthcare sectors.

The strategies identified are the result of a multi-method research design involving literature review, action research (AR) and Delphi study. Further, the AR portion of the study involved more than 10 years of projects focused on the deployment of LSS in the healthcare sector.

The strategies include a holistic view from the multi-level perspective, considering the Top Management Level, Middle Management Level and Operational Level. The authors ascertained 27 strategies across the three levels of organizational structure for the effective deployment of LSS. Further, the authors present a customized LSS “pocket guide” from the healthcare perspective for quick reference.

The strategies delineated in this study are based on the Indian healthcare section only; thus, further research in additional geographic contexts is needed. Also, further research is necessary to provide additional empirical validation of the effects of the identified strategies on LSS program outcomes and to verify that the strategies operate at the proposed organizational levels. Future research should also focus on identifying the interrelationships between strategies within and across levels, developing a “road map” for LSS implementation in hospitals and designing the LSS curriculum for medical schools and other medical training programs.

Observations of this study can contribute to developing a holistic framework for successful LSS implementation in the healthcare sector for academicians, practitioners and policymakers. This, in turn, ensures an enhanced value proposition, improved quality of life and reduced healthcare operational costs. Thus, it ensures a win-win situation among all the stakeholders of the healthcare sector.

The strategies put forth will enable the LSS researchers, academicians and, more particularly, practitioners to delve deeper into specific enablers and safeguard the LSS deployment from backlash. The research has two significant benefits. Firstly, it enhances the understanding of LSS from the healthcare perspective. Secondly, it provides direction for future studies with specific components for hospitals’ LSS framework, which can be further tested, refined and improved.

Lean Six Sigma (LSS) is receiving a tremendous attention as a modern process of streaming to improve the organizational ability and customer satisfaction. A successful LSS implementation is influenced by various factors and the execution of all the influencing factors simultaneously is a very difficult task for any organization. From the perspective of limitation of resources, this paper aims to present a basic issue in an LSS implementation of clustering complex and impacting factors into groups to achieve them in a stepwise manner. This paper aims to present a fundamental issue of clustering the complex and impacting factors of an LSS implementation into groups to achieve them stepwise.

A total of 40 relevant influencing factors toward an LSS implementation have been identified from the extensive literature review and duly validated with experts’ opinions. Integrated fuzzy set theory and decision-making trial and evaluation laboratory (DEMATEL) approach are demonstrated to explore the causal relationships among influencing factors of the LSS implementation. An empirical case analysis of an Indian manufacturing organization is carried out to illustrate the utilization of the proposed model.

The proposed framework effectively finds out the significance of each influencing factor of an LSS implementation and clustered into cause–effect groups. As per the results of the empirical case analysis, ten critical success factors (CSFs) of the LSS implementation are evaluated for the successful LSS implementation. Top management pays more attention to achieve them and implement them in a phase-wise approach under the limitations of accessible resources.

The presented framework provides an effective, precise and systematic decision support tool for recognizing CSFs of the LSS implementation. The organization, decision-makers, industrial practitioners and academic researchers may be able to comprehend the cause–effect relationship of the influencing factors of the LSS implementation. The exploratory nature and the single case study are two major limitations of this analysis. The developed model is heavily dependent on the experts’ opinions; hence, any bias in judgment will influence the final result.

This analysis is the first of its kind of effort, according to the best of the authors’ knowledge, to classify the influencing factors of LSS implementation into the cause–effect cluster. The outcomes of this analysis make the complexity of a problem easier in handling and assisting the decision-making.