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Abstract

Purpose

The purpose of this study is to compare different models integrating the TOC and Lean approaches.

Design/methodology/approach

The models of reference were identified through a comprehensive literature review. A qualitative and comparative analysis was carried out by pointing out the strengths, weaknesses and gaps of models integrating the TOC and Lean based on the production system requirements.

Findings

The findings indicate that these models can be improved by introducing aspects related to the system structure such as main key performance indicators, type of shop layout and performance metrics to evaluate the improvements implemented in the production system. The results provided evidence that the TOC and Lean are complementary approaches, and the individual gaps of each approach seem to be, in the most part, offset by the virtues of the other.

Practical implications

This study enables decision makers and industrial managers to evaluate the practices adopted in the production environment, as well as the use of the different set of continuous improvement practices. This article also minimizes the literature gap regarding whether and how integrated Lean and TOC approach can be used in the firms.

Originality/value

This study contributes to the body of literature on Lean by comparing three different models integrating Lean and the TOC. Furthermore, a research agenda is suggested for future research aimed at developing new models integrating both approaches, aiming to increase the competitiveness of the production systems.

Details

International Journal of Lean Six Sigma, vol. 10 no. 3
Type: Research Article
ISSN: 2040-4166

Keywords

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Article

Thiago A. Souza, Guilherme Luís Roehe Vaccaro and Rui M. Lima

Overall equipment effectiveness (OEE) is a performance indicator that is been used to measure manufacturing productivity. The purpose of this paper is to propose the…

Abstract

Purpose

Overall equipment effectiveness (OEE) is a performance indicator that is been used to measure manufacturing productivity. The purpose of this paper is to propose the operating room effectiveness for hospital operating rooms (ORs), adapted from the OEE, to measure performance and identify losses based on lean health-care principles.

Design/methodology/approach

The present study is an exploratory, descriptive and applied research work. Literature review, documents of the hospital, observation and interviews with employees of a large university hospital in southern Brazil were analyzed to organize the proposed effectiveness indicator. After that, historical data of the ORs was collected and the usefulness of the indicator was analyzed. The indicator was applied for 10 months and validated with an expert committee from the hospital.

Findings

The present study describes an adaptation of a performance indicator to ORs of hospitals, allowing to classify its types of operational losses in a lean health-care context. The application of this indicator and the development of improvement actions to a university hospital, resulted in operational efficiency gains of 12 per cent and estimated annual savings of US$400,000.

Practical implications

ORs are a critical service for hospitals. This paper presents a new way to measure the performance of ORs and identify their main types of wastes. It also shows how to implement it and the potential gains of its application. The main research limitations are related to technical analysis of care data from doctors and nurses involved.

Originality/value

This paper fulfills the need to study how ORs performance can be measured and its operational wastes can be identified. In addition, this paper classifies the planning, performance and quality related losses, which can be used by researchers and practitioners to improve the performance of operation rooms.

Details

International Journal of Lean Six Sigma, vol. 11 no. 5
Type: Research Article
ISSN: 2040-4166

Keywords

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Article

Anete Petrusch, Guilherme Luís Roehe Vaccaro and Juliane Luchese

Although discussed for more than 20 years, information about Lean adoption in higher education institutions (HEIs) is scarce, especially in developing countries. This…

Abstract

Purpose

Although discussed for more than 20 years, information about Lean adoption in higher education institutions (HEIs) is scarce, especially in developing countries. This research aims to investigate the degree of Lean thinking adoption on administrative services of Brazilian private HEIs. The results are compared to studies from USA and UK, highlighting the maturity on enablers, principles, tools and performance measures related to Lean.

Design/methodology/approach

A quantitative survey research was carried out. The instrument is adapted for HEIs from the proposal of Malmbrandt and Åhlström (2013) for Lean services. Cronbach’s alpha and factor analysis were used to validate the adapted instrument. Additional data analysis was based on non-parametric tests.

Findings

No evidence of broad implementation of Lean thinking in administrative processes of Brazilian private HEIs was found, with the adoption being incipient. The results are convergent to those presented by other studies in the USA and the UK. There is a gap between the existing knowledge about Lean in the academic sphere of the HEIs and its application on their academic processes.

Research limitations/implications

The effective sample size was of 47, despite contacts being sent to 2,090 institutions. This sample allows exploratory research, although further research is required. Results are adherent to those found in research from other countries.

Originality/value

The research presents descriptive and exploratory results regarding the adoption of Lean in Brazilian HEIs. No previous similar research was found in the literature.

Details

International Journal of Lean Six Sigma, vol. 10 no. 3
Type: Research Article
ISSN: 2040-4166

Keywords

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Article

Anete Petrusch and Guilherme Luís Roehe Vaccaro

The purpose of this paper is to use theoretical and field evidence to discuss what the value-attributes for academic-administrative services as perceived by students in…

Abstract

Purpose

The purpose of this paper is to use theoretical and field evidence to discuss what the value-attributes for academic-administrative services as perceived by students in higher education institutions (HEIs) and how such organizations deliver them. An emerging framework relating value-attributes for HEIs’ administrative and academic services is presented from the perspective of students.

Design/methodology/approach

Focus group analysis with Brazilian HEI’s students supported this study. Extensive theoretical references from lean services and services theory contribute to building an emerging framework that extends the background on the subject.

Findings

The following framework of eight value-attributes for administrative services in HEIs were studied: reliability, empathy, access, responsiveness, self-service technology convenience, communication, personalization and imperceptibility. The value-attributes may receive different degrees of prioritization and improvement effort according to the type of service and strategic positioning of the organization.

Research limitations/implications

Field evidence is limited by the extent of students and organizations accessed. Implications include directing future research to produce a quantitatively validated model and as an emerging framework, to support decision-planning in the context of HEIs.

Originality/value

The study extends the literature relating the connection between lean services, services theory and higher education services. No similar study has been found in Brazilian HEIs.

Details

International Journal of Lean Six Sigma, vol. 10 no. 4
Type: Research Article
ISSN: 2040-4166

Keywords

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Article

Diego Pacheco, Isaac Pergher, Guilherme Luís Roehe Vaccaro, Carlos Fernando Jung and Carla ten Caten

This paper aims to presents a conceptual comparative analysis of Lean manufacturing and Six Sigma, highlighting 18 critical aspects between such approaches and their…

Abstract

Purpose

This paper aims to presents a conceptual comparative analysis of Lean manufacturing and Six Sigma, highlighting 18 critical aspects between such approaches and their respective implications for management decision-making.

Design/methodology/approach

Qualitative approach based on the results obtained from literature review about Lean and Six Sigma.

Findings

The main points of divergence between Lean and Six Sigma have been highlighted based on 18 criteria. Seventeen criteria are proposed as a result of a review of the literature and one criterion, and “quality control”, is suggested by the authors.

Research limitations/implications

This article mitigates the literature gap regarding whether and how Lean and Six Sigma are synergistic approaches.

Practical implications

This study enables decision-makers to evaluate the Lean and Six Sigma practices. The results of the analysis performed originated three observations: first, both approaches are predominantly complementary; second, it is possible to create a single model integrating both approaches studied in this research; and third, when Lean is implemented as stand-alone approach, it falls short of specific tools to leverage its full potential according to the complexity of the problem under consideration.

Originality/value

This paper analyzes which aspects from Lean and Six Sigma can be learnt from organizational change and productivity improvement efforts. The analysis includes a comparison of 18 critical aspects for practical use of Lean and Six Sigma.

Details

International Journal of Lean Six Sigma, vol. 6 no. 2
Type: Research Article
ISSN: 2040-4166

Keywords

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