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1 – 10 of 13The paper shows a method for 3D magnetic field calculation. The method was developed from previously published 2D method of current sheets. The method is based on magnetic…
Abstract
The paper shows a method for 3D magnetic field calculation. The method was developed from previously published 2D method of current sheets. The method is based on magnetic homogenisation of the space. Only one permeability appears inside all magnetic problem space after the homogenisation and so the Biot‐Savart low can be applied. All calculations are made without any kind of potentials. The main advantages of the current sheet methods are: simple model building, direct magnetic field density calculation, no need to know boundary conditions and easy calculation of open boundary problems. The method has similar properties to the boundary element method and is suitable for problems with unknown boundary conditions.
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Introduces the fourth and final chapter of the ISEF 1999 Proceedings by stating electric and magnetic fields are influenced, in a reciprocal way, by thermal and mechanical fields…
Abstract
Introduces the fourth and final chapter of the ISEF 1999 Proceedings by stating electric and magnetic fields are influenced, in a reciprocal way, by thermal and mechanical fields. Looks at the coupling of fields in a device or a system as a prescribed effect. Points out that there are 12 contributions included ‐ covering magnetic levitation or induction heating, superconducting devices and possible effects to the human body due to electric impressed fields.
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Mauro Andriollo, Giovanni Martinelli, Augusto Morini and Andrea Tortella
This paper deals with the application of the surface‐current method to the analysis of electromagnetic devices. The basics of the method are outlined and new developments…
Abstract
This paper deals with the application of the surface‐current method to the analysis of electromagnetic devices. The basics of the method are outlined and new developments involving the implementation of automated procedures for the definition of the geometry and sources, the contour subdivision according to suitable error indexes and the upgrading of the magnetic permeability to analyse saturated devices are described. As examples of application, the method is applied to the analysis of a single‐phase step motor and a linear brushless DC motor; the results are discussed and compared with the outputs of corresponding finite‐element method analyses.
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Gives introductory remarks about chapter 1 of this group of 31 papers, from ISEF 1999 Proceedings, in the methodologies for field analysis, in the electromagnetic community…
Abstract
Gives introductory remarks about chapter 1 of this group of 31 papers, from ISEF 1999 Proceedings, in the methodologies for field analysis, in the electromagnetic community. Observes that computer package implementation theory contributes to clarification. Discusses the areas covered by some of the papers ‐ such as artificial intelligence using fuzzy logic. Includes applications such as permanent magnets and looks at eddy current problems. States the finite element method is currently the most popular method used for field computation. Closes by pointing out the amalgam of topics.
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Hafeeza Mamoojee-Khatib, Jiju Antony, Viraiyan Teeroovengadum, Jose Arturo Garza-Reyes, Guilherme Luz Tortorella, Monika Foster and Elizabeth A. Cudney
The purpose of this study is to carry out a comprehensive systematic review of lean implementation frameworks and roadmaps developed over the past decade and report the key…
Abstract
Purpose
The purpose of this study is to carry out a comprehensive systematic review of lean implementation frameworks and roadmaps developed over the past decade and report the key findings along with the limitations and the way forward.
Design/methodology/approach
A systematic review methodology proposed by Tranfield (2003), was followed to identify the relevant works on the research topic. Articles were searched using a set of inclusion criteria in various databases including Google Scholar, Web of Science and Science Direct over a period of 30 years.
Findings
The high failure rate of lean system implementation, reaching a range between 70 and 90% in almost all industries, is a matter of concern. This failure rate is still high even though numerous frameworks and roadmap models exist to streamline lean implementation. There is no standard framework or roadmap identified in the literature and many organisations are implementing lean in their unique ways. However, it would be desirable to develop a practical and systematic roadmap on lean-looking into the cultural and leadership dimensions rather than focusing on a set of tools. Moreover, most frameworks and roadmaps lack the sustenance aspects of lean implementation.
Research limitations/implications
This research only identifies the fundamental gaps with the existing frameworks and roadmaps on lean implementation. The next phase of the research is to develop a roadmap and validate it with a number of organisations in different cultural contexts and leadership styles.
Originality/value
The authors argue that this is one of the most comprehensive systematic review on lean frameworks and roadmaps, ever produced in the literature to date.
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Aqeel Ahmed and Sanjay Mathrani
The concept of lean and ISO 14001 as a combined approach is an evolving strategy for streamlining operational processes and attaining environmental sustainability in the…
Abstract
Purpose
The concept of lean and ISO 14001 as a combined approach is an evolving strategy for streamlining operational processes and attaining environmental sustainability in the manufacturing context. This paper explores the critical success factors (CSFs) for a combined lean and ISO 14001 implementation in the manufacturing industry for achieving the operational and environmental benefits.
Design/methodology/approach
A systematic literature review (SLR) based on Scopus and Web of Science databases is conducted to present peer-reviewed articles on the CSFs for lean and ISO 14001 implementation in manufacturing operations. This article applies the CSF theory to classify the CSFs for a joint lean and ISO 14001 adoption.
Findings
Numerous CSFs are synthesised from the SLR across seven theoretical contexts of industry, competitive strategy, managerial position, environmental, temporal, internal/external, monitoring and building/adapting factors for a combined lean and ISO14001 implementation.
Research limitations/implications
Numerous CSFs are synthesised from the SLR across seven theoretical contexts of strategic direction, competitive strategy, leadership and management, environmental, temporal, internal/external, monitoring and continuous process improvement factors for a combined lean and ISO 14001 implementation.
Practical implications
This paper contributes to academic scholarship by providing a theoretical perspective through classification of CSFs for a combined lean and ISO 14001 implementation to achieve operational and environmental performance. This paper also contributes to practitioners and policymakers who can use the emergent theoretical framework for application in practice for a more efficient and effective deployment of both strategies in the manufacturing industry.
Originality/value
To the best of author's knowledge, this study is the first to propose a theoretical framework of CSFs for a combined lean and ISO 14001 implementation based on the CSF theory and SLR findings in the manufacturing industry.
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Guilherme Tortorella, Desirée H. van Dun and Amanda Gundes de Almeida
The purpose of this paper is to examine leadership behaviors associated with lean healthcare (LH) implementation and how they develop throughout the change process.
Abstract
Purpose
The purpose of this paper is to examine leadership behaviors associated with lean healthcare (LH) implementation and how they develop throughout the change process.
Design/methodology/approach
After a systematic literature review of 107 peer-reviewed articles on lean leaders’ behaviors, the authors undertook a one-year mixed-methods study of 12 leaders within a Brazilian public hospital undergoing LH implementation. Multivariate data analysis techniques were employed.
Findings
The literature review showed some convergence between effective lean leader behaviors in both manufacturing and healthcare work settings, implying that lean leaders’ behaviors are generalizable to other contexts than manufacturing. The empirical findings suggest that LH implementation needs leaders to demonstrate a set of task-oriented behaviors, especially if short-term results are mandatory. More mature lean leaders should also continue developing their relations-oriented behaviors.
Research limitations/implications
While the contingency theory assumes that contexts influence (lean) practices adoption, leadership behaviors may not be bound to the work context. The finding resembles the augmentation effect of leadership whereby more mature lean leaders adopt both task- and relations-oriented behaviors.
Originality/value
Longitudinal studies in this field are scarce, regardless of the industrial setting. Many manufacturing and healthcare organizations crave for knowledge about lean leader behaviors throughout the lean implementation journey in order to enhance the effectiveness of their often-struggling lean initiatives. The insights derived from this study could help organizations to adjust their expectations as well as identify behavioral gaps and needs in terms of soft skills development among their leaders.
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Discusses the 27 papers in ISEF 1999 Proceedings on the subject of electromagnetisms. States the groups of papers cover such subjects within the discipline as: induction machines;…
Abstract
Discusses the 27 papers in ISEF 1999 Proceedings on the subject of electromagnetisms. States the groups of papers cover such subjects within the discipline as: induction machines; reluctance motors; PM motors; transformers and reactors; and special problems and applications. Debates all of these in great detail and itemizes each with greater in‐depth discussion of the various technical applications and areas. Concludes that the recommendations made should be adhered to.
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Adriano Rehder, João Valsecchi Souza, Roberto Marx and Mario Sergio Salerno
Agile methods are increasingly being applied in the contexts of innovation beyond traditional information technology (IT) and physical product development projects, such as when…
Abstract
Purpose
Agile methods are increasingly being applied in the contexts of innovation beyond traditional information technology (IT) and physical product development projects, such as when process improvements are being implemented. Nevertheless, this phenomenon is still recent and little addressed in the literature, with few descriptions of empirical cases. This study aims to address this gap.
Design/methodology/approach
This multiple case study aims to present and discuss the application of Agile practices embedded in large companies’ innovation value chains, focusing on improvements of business processes. The following research question is pursued: How are large companies applying elements of Agile methods to their innovation processes when implementing incremental improvements in their operational processes? Based on the idea that the Agile-Stage-Gate model is an alternative to this challenge, this study investigates the application of this hybrid model in two large Brazilian companies by presenting their idiosyncrasies, lessons learned, adaptations, challenges and benefits.
Findings
Overall, it was observed that the experience with the application of the Agile-Stage-Gate model is positive for these companies, with better customer engagement, easier project control and increased productivity of the project team.
Originality/value
For those aiming to implement the Agile-Stage-Gate model, this paper identifies the main adaptations made in order to combine the purist approaches and critical success factors for its implementation.
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Marcos Fabricio Machado, Daniel Pacheco Lacerda, Maria Isabel Wolf Motta Morandi, Luis Felipe Riehs Camargo and Aline Dresch
The purpose of the present study is to identify and measure economically the losses related to inventory management in an oil refinery.
Abstract
Purpose
The purpose of the present study is to identify and measure economically the losses related to inventory management in an oil refinery.
Design/methodology/approach
An exploratory case study was conducted to search for a better understanding of a phenomenon and its implications.
Findings
The results obtained based on the case study suggest the need to observe this phenomenon in other contexts and take managerial actions that will eliminate waste as one of the forms of generating value for the company. The results were related to each other and to the traditional metrics of inventory management and can be used as a base to improve mathematical and computational models for production planning and scheduling and also performance indicators.
Originality/value
No studies have been found that attempt to measure the economic losses derived from inventory management and their capacity in this environment.
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