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Article
Publication date: 10 October 2016

V. Raja Sreedharan and R. Raju

The purpose of this paper is to review Lean Six Sigma (LSS) literature and report different definitions, demographics, methodologies and industries.

Abstract

Purpose

The purpose of this paper is to review Lean Six Sigma (LSS) literature and report different definitions, demographics, methodologies and industries.

Design/methodology/approach

This paper highlights various definitions by different researchers and practitioners. A total of 235 research papers has been reviewed for the LSS theme, research methodology adopted, type of industry, author profile, country of research and year of publication.

Findings

From the review, four significant LSS classifications were identified that deal with the spread of LSS in different industries followed by observation for classification.

Practical implications

LSS is a strategy for success, but it did not examine its presence in various Industries. From this paper, readers can understand the quantum of its spread before implementing LSS. For academicians, it will be a comprehensive list of papers for research.

Originality/value

This paper reviews 235 research papers for their year, author profile, research methodology and type of industry. Various characteristics of LSS definitions and their theme are also reviewed.

Details

International Journal of Lean Six Sigma, vol. 7 no. 4
Type: Research Article
ISSN: 2040-4166

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Article
Publication date: 4 February 2019

Raja Sreedharan V., R. Raju, Vijaya Sunder M. and Jiju Antony

Many organizations have reported significant benefits after the implementation of Lean Six Sigma (LSS). Embracing LSS requires asking some important questions: How Lean…

Abstract

Purpose

Many organizations have reported significant benefits after the implementation of Lean Six Sigma (LSS). Embracing LSS requires asking some important questions: How Lean Six Sigma Readiness (LESIRE) can be measured? How can an organization identify the barriers for LESIRE? Answers to these questions are critical to both academicians and practitioners. The paper aims to discuss this issue.

Design/methodology/approach

This study illustrates the development process of a Lean Six Sigma Readiness (LESIRE) evaluation model to assess an organization’s readiness for LSS deployment using the fuzzy approach. The model was developed from 4 enablers, 16 criteria and 46 attributes of LSS, identified through a literature review.

Findings

To demonstrate the efficiency of the model, this study testing the LESIRE evaluation model in three Indian SMEs. Using experts’ ratings and weight, the researchers calculated the Fuzzy Lean Six Sigma index (FLSS) which indicates the LESIRE level of an organization and the Fuzzy Performance Importance Index (FPII) that helps to identify the barriers for LESIRE.

Research limitations/implications

The main limitations of this study are that it did not consider the failure factors of LSS for model development and the LESIRE was only tested in manufacturing industries. Thus, future researchers could focus on developing a model with failure factors. The results obtained from the SMEs show that LESIRE is capable of assessing LESIRE in an industrial scenario and helps practitioners to measure LESIRE for the future decision making process.

Practical implications

The LESIRE model is easy to understand and use without much computation complexity. This simplicity makes the LESIRE evaluation model unique from other LSS models. Further, LESIRE was tested in three different SMEs, and it aided them to identify and improve their weak areas, thereby readying them for LSS deployment.

Originality/value

The main contribution of this study it proposes a LESIRE model that evaluates the organization for FLSS and FPII for LESIRE, which is essential for the organization embarking on an LSS journey. Further, it improves the readiness of the organization that is already practicing LSS.

Details

International Journal of Quality & Reliability Management, vol. 36 no. 2
Type: Research Article
ISSN: 0265-671X

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Article
Publication date: 29 November 2018

Raja Sreedharan V., Vijaya Sunder M. and Raju R.

The purpose of this paper is to review the existing literature on the critical success factors (CSFs) of various continuous improvement (CI) like total quality management…

Abstract

Purpose

The purpose of this paper is to review the existing literature on the critical success factors (CSFs) of various continuous improvement (CI) like total quality management (TQM), Lean, Six Sigma and Lean Six Sigma (LSS), and perform a content analysis (CA) leading to an agenda for future research.

Design/methodology/approach

CA is based on literature review of 41 papers published in peer-reviewed scholarly journals. A four-stage methodology is used by the authors, with Stage 1 featuring relevant material collection; Stage 2 presenting a descriptive analysis; Stage 3 outlining the category selection; and Stage 4 featuring the material evaluation using clustering and Pareto analysis.

Findings

The CA revealed various research implications and directions for the future. The number of studies in the literature regarding CSF assessment is found to be far from substantial while compared to CI implementation. Assessment methodologies developed have been ranging from qualitative to quantitative models. Key gaps were identified and directions for CSF assessment are proposed which requires further validation.

Research limitations/implications

Only articles that appeared in peer-reviewed journals were analyzed; conference papers, reports, manuals and white papers from practice were excluded. Another limitation of the paper would be the scope of CA limited to four CI constructs – TQM, Lean, Six Sigma and LSS. Research implications indicate that the future studies in this domain would be intensive toward analyzing the vital CSFs for enterprise organizational excellence and not merely process excellence.

Practical implications

This review study can serve as a resource for both researchers and practitioners to understand the importance of CSFs and positioning CSFs for the successful implementation of CI programs.

Originality/value

The CA on the existing literature on CSFs for CI presents a unique, systematic effort to identify an agenda for future research. This study is the apparently the first of its kind on CSF assessment.

Details

Benchmarking: An International Journal, vol. 25 no. 9
Type: Research Article
ISSN: 1463-5771

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Article
Publication date: 19 July 2019

Raja Sreedharan V., Vijaya Sunder M., Vandana Madhavan and Anand Gurumurthy

Nowadays, firms are keen on improving the quality culture in the organizations. The proven success of Lean and Six Sigma has given rise to the synergetic Lean Six Sigma…

Abstract

Purpose

Nowadays, firms are keen on improving the quality culture in the organizations. The proven success of Lean and Six Sigma has given rise to the synergetic Lean Six Sigma (LSS) approach that has been catching fire in the past one decade. However, there exists a gap between the understanding and implementation of LSS in the organizations, especially in the emerging economies. Taking this as a valuable opportunity, the purpose of this paper is to present a development of LSS training module.

Design/methodology/approach

This study starts with a literature review of LSS to reinforce the understanding of the research subject in scope of manufacturing sector. Then, an online questionnaire was designed and used to collect responses from 181 companies located in the Indian sub-continent. Subsequently, the results obtained from the survey were analyzed using COARSE approach.

Findings

This study reveals two key findings and associated contributions. First, it was found that the overall awareness of LSS within the responded manufacturing firms is about 70.4 percent. Second, there is no single standard training module that exists in any of the sampled firms to cater to their quality programs. Hence, in order to improve the LSS awareness which could subsequently help managers as a resource for creating an efficient workplace, this paper presents a structured LSS training framework.

Research limitations/implications

Although this paper presents the importance of LSS and associated awareness level among the responded firms, more empirical evidence is required to generalize the model findings. Second, this study is scoped to firms that work out of the Indian sub-continent, and this provides a future opportunity to expand the scope of this research toward a global study for a comparison between emerging and developed economies. Third, this study is limited to manufacturing firms and hence paves an opportunity to research on a similar theme in services context as well.

Practical implications

Before embarking on an LSS journey, an organization can use the LSS training module proposed in this study to assess the employee awareness on LSS. Furthermore, organizations that already have a mature LSS practice can incorporate the LSS training module for periodic evaluation of the employees for effective change management.

Originality/value

The training module presented in this paper is the original contribution by the authors. This is no association to any single identifiable organization or associated funding. The direct practical implication of its application in real time is the value that managers could derive from the proposed LSS training framework.

Details

International Journal of Quality & Reliability Management, vol. 37 no. 5
Type: Research Article
ISSN: 0265-671X

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Article
Publication date: 4 June 2018

Raja Sreedharan V., Sandhya G. and R. Raju

The purpose of this paper is to improve the operational excellence of public sector services such as construction, telecommunication and health care. To achieve this…

Abstract

Purpose

The purpose of this paper is to improve the operational excellence of public sector services such as construction, telecommunication and health care. To achieve this endeavor, the study explores the structural attributes and obstacles in the public services and develops a Green Lean Six Sigma (GLSS) model for the public sector.

Design/methodology/approach

The study involved two stages: first, structured literature reviews; second, a focus group study involving Black Belts and supply chain practitioners. Using the results from the literature reviews and focus group study, the researchers have developed a Green Lean Six Sigma (GLSS) model for the public sectors.

Findings

Black belts and supply chain practitioners have identified the success in deploying Lean Six Sigma with green supply chain management. This leads to eradicating the obstacles faced by the public sector, leading to process improvement.

Practical implications

This study proposed an approach for developing a GLSS model for the public services, which can be applicable for other public service organizations.

Originality/value

The current paper presents a predictive model for process improvement in the public sector by integrating green supply chain management with Lean Six Sigma.

Details

International Journal of Lean Six Sigma, vol. 9 no. 2
Type: Research Article
ISSN: 2040-4166

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Article
Publication date: 25 May 2020

Mohamed Alblooshi, Mohammad Shamsuzzaman, Michael Boon Chong Khoo, Abdur Rahim and Salah Haridy

The purpose of this paper is to identify, present and categorise the main requirements, challenges and impacts of Lean Six Sigma (LSS) applications. Emphasis is given to…

Abstract

Purpose

The purpose of this paper is to identify, present and categorise the main requirements, challenges and impacts of Lean Six Sigma (LSS) applications. Emphasis is given to the soft impacts of LSS applications, which are intangible in nature and difficult to quantify and measure, highlighting the most frequently cited ones.

Design/methodology/approach

A qualitative synthesis of the studies using the narrative synthesis approach is adopted to descriptively summarise and categorise the requirements, challenges and impacts of LSS applications. The studies were searched by using the following keywords: “LSS applications,” “LSS requirements,” “LSS challenges” and “LSS impacts” in almost all major electronic databases such as Emerald, Taylor and Francis, ScienceDirect and Wiley. A total of 116 articles published between 2007 and 2017 in 41 academic journals were collected and reviewed. Consideration was also given to a number of substantial publications in 2006, 2018 and 2019.

Findings

In addition to its process efficiency and financial impacts, LSS was found to have another impact category related to individual and organisational behaviours. Management commitment, training and organisational culture were concluded to be amongst the most important and required categories for successful LSS applications. It was also found that the lack of awareness of LSS tools and benefits and the lack of change management and resistance to change were amongst the most cited categories of implementation challenges.

Research limitations/implications

The studies published between 2007 and 2017 are mainly considered in this paper. It is believed that 10-year publication period considered in this research is sufficient to study the evolution, benefits, limitations and future trends of a particular research topic. However, the exclusion criteria used in the search process with respect to the articles’ year of publication and search terms and keywords may limit the generalisation of the research findings. In addition, the qualitative nature of this research study and the lack of empirical data to support its findings is another limitation that future research should consider.

Practical implications

This research paper may serve as a valuable source of information for LSS researchers as it will provide them with useful and new insights and directions for further research in LSS. It will also increase the awareness of LSS practitioners about the kind of impact LSS has, and therefore, achieve a better utilisation of its tools by ensuring availability of application requirements and overcoming application challenges.

Originality/value

This study differs from previous research studies as it focusses attention on the soft impacts of LSS applications and highlights them. The study identifies and prioritises LSS application impacts, requirements and challenges. The study on these aspects was found to be limited and lacking in previous research studies.

Details

International Journal of Lean Six Sigma, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2040-4166

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Article
Publication date: 2 June 2020

Reggie Raju, Jill Claassen, Jeremiah Pietersen and Danielle Abrahamse

This paper investigates the fit for purpose of the flip model proposed by Max Planck Society and Plan S for the African environment. This flipped model is examined against…

Abstract

Purpose

This paper investigates the fit for purpose of the flip model proposed by Max Planck Society and Plan S for the African environment. This flipped model is examined against the backdrop of African imperatives, which is much broader than just flipping a journal pricing model from subscription to open access. This paper also seeks a viable alternative model that supports the growth of African scholarship and the dissemination thereof.

Design/methodology/approach

This paper adopts a descriptive research methodology, which allows for an in-depth analysis of a phenomenon. By using this method, this paper describes a flip model proposed by global north entities, which do not augur well for the growth of the OA movement in Africa.

Findings

The findings demonstrate that the global north centric flipped model exacerbates the inequality in the publishing landscape by further marginalizing the research voices from the global south. Africa is in dire need of an alternative that denorthernizes the publishing landscape, promote equity and equality, and is more inclusive of the research voices from Africa. South African academic libraries have demonstrated their willingness to experiment with and roll-out library publishing services. This proof of concept has been extended into a continental platform for the publication and dissemination of African scholarship.

Originality/value

This paper will be of interest to those who are grappling with viable alternatives to the current flip models, which include, inter alia, university leadership. This paper will also be of interest to global north libraries who are embarking on library publishing without the social justice obligation but are committed to the OA movement.

Details

Library Management, vol. 41 no. 6/7
Type: Research Article
ISSN: 0143-5124

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Article
Publication date: 13 August 2018

Reggie Raju, Jill Claassen, Amina Adam, Alexander DAngelo, Sadiq Keraan, Niel Mostert and Saskia Vonk

The purpose of this paper is to report on the development of a flexible and robust academic library structure that meets the demands of an ever changing user community and…

Abstract

Purpose

The purpose of this paper is to report on the development of a flexible and robust academic library structure that meets the demands of an ever changing user community and remains relevant and fit for purpose in a technology-driven age. The new structure makes provision for the delivery of new and innovative services responding to the need for a paradigm shift in twenty-first century academic librarianship. The move away from subject librarianship, which has been the bastion of South African academic librarianship, is significant.

Design/methodology/approach

This paper used the exploratory method to gain new insights into library structures that have restructured for the twenty-first century. The exploratory study was used to gain new insights into functional librarianship. Despite the short comings of the exploratory method, the method was deemed most appropriate as UCT Libraries was not seeking definitive answers but a process that would provide opportunities to explore possibilities for subsequent processes.

Findings

The move from subject librarianship to functional librarianship has given the library the opportunity to restructure. The restructured library can now offer new and/or radically expanded services to meet the demands of a twenty-first century academic library.

Practical implications

The development of new and future roles and responsibilities commensurate with a robust and “future-driven” structure will consolidate the library’s role as a collaborator in the teaching and learning, and research agendas of a higher education institution.

Originality/value

This paper will be of interest and value to library managers and staff wanting to develop a library structure that responds positively to the redefinition of the professional roles and functions of the library and to strategically position the academic library for the future. It will also be of interest to library and information science academics who may want to re-examine their curricula for the incorporation of new trends.

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Article
Publication date: 4 March 2019

Olga Maria Formigoni Carvalho Walter and Edson Pacheco Paladini

This paper aims to investigate Lean Six Sigma (LSS) in the Brazilian context, seeking to identify its main characteristics and opportunities for future research.

Abstract

Purpose

This paper aims to investigate Lean Six Sigma (LSS) in the Brazilian context, seeking to identify its main characteristics and opportunities for future research.

Design/methodology/approach

This study focuses on a literature review in the area of production engineering and operations management, where 104 relevant scientific publications were identified.

Findings

The results show that the most important critical success factor for integrating LSS in Brazil is top management support and commitment. LSS integration occurs predominantly in large industrial companies, being incipient in small and medium-sized enterprises. In general, there is no structured way of applying LSS. A standard framework for LSS is still lacking.

Research limitations/implications

This study is limited to a sample that only comprises Brazilian scientific studies.

Practical implications

Professionals and practitioners can understand the evolution of LSS through practical applications and the main LSS tools used in both the industrial and services sectors. It also points out the critical success factor for the implementation of LSS. The study highlights several roadmaps for LSS implementation adopted by large and modern Brazilian automotive industries based on a robust technological base. This study also contributes to expanding the evidence base of LSS application, both in Brazil and in other countries.

Originality/value

Some suggestions are proposed to clarify the structure and complexity of integrated implementation of LP and SS as well as expand the LSS application in small and medium-sized enterprises. This study is the first to discuss the current situation of LSS in Brazil and provide suggestions to expand LSS in the country. Comparisons of Brazilian LSS literature review with researches of others countries are also presented.

Details

International Journal of Lean Six Sigma, vol. 10 no. 1
Type: Research Article
ISSN: 2040-4166

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Article
Publication date: 1 August 2016

Ganji Prabhakar Rao, Vipin Dhyani, Deepak Kumar, V.R.K. Raju and S. Srinivasa Rao

This paper aims to present the effects of varying different operating parameters such as Start of Injection (9 to 21 deg bTDC), compression ratio (16 to 12.5), fuel…

Abstract

Purpose

This paper aims to present the effects of varying different operating parameters such as Start of Injection (9 to 21 deg bTDC), compression ratio (16 to 12.5), fuel injection pressure (400 to 1,400 bar) and exhaust gas recirculation (0 to 25 per cent) on the performance and emissions of the engine for constant engine speed of 1,600 rpm.

Design/methodology/approach

Simulation results were validated with experimental data available in the literature for baseline configuration. The effect of each parameter on the performance characteristics such as pressure and temperature, emission characteristics such as NOx and soot are presented and discussed. Optimization has been carried out based on the regression equations developed from the simulation results to obtain the optimum set of the parameters to achieve the desired performance and emissions. Numerical simulations have been performed for the optimized set and compared with the reference engine.

Findings

Results of optimization showed that there was a simultaneous reduction in NOx and soot while maintaining the same level of performance as that of the baseline case.

Originality/value

Based on the present work, it can be said that lesser emissions are achieved in terms of NOx and soot while maintaining the same performance in terms of peak pressure.

Details

World Journal of Engineering, vol. 13 no. 4
Type: Research Article
ISSN: 1708-5284

Keywords

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