This paper explores the synergies that exist between lean construction and green building across all the development phases in a construction project to enhance sustainable development practices in South Africa. Using a systematic literature review, 68 articles were selected and coded. The findings indicate that: (i) lean construction and green building practices, principles, techniques, tools, and technologies can be simultaneously implemented across all phases of development, and offer multidimensional benefits in each; (ii) building information modelling plays a crucial role in assisting and facilitating lean construction and green building, mutually reinforcing each other throughout a development; (iii) prefabricated construction is becoming a popular way in which lean construction and green building are interacting and supporting each other; and (iv) the interaction between lean construction and green building can help to achieve more sustainable development in South Africa.
{"title":"COMBINING GREEN BUILDING AND LEAN CONSTRUCTION TO ACHIEVE MORE SUSTAINABLE DEVELOPMENT IN SOUTH AFRICA","authors":"J. Watkins, B. Sunjka","doi":"10.7166/31-3-2426","DOIUrl":"https://doi.org/10.7166/31-3-2426","url":null,"abstract":"This paper explores the synergies that exist between lean construction and green building across all the development phases in a construction project to enhance sustainable development practices in South Africa. Using a systematic literature review, 68 articles were selected and coded. The findings indicate that: (i) lean construction and green building practices, principles, techniques, tools, and technologies can be simultaneously implemented across all phases of development, and offer multidimensional benefits in each; (ii) building information modelling plays a crucial role in assisting and facilitating lean construction and green building, mutually reinforcing each other throughout a development; (iii) prefabricated construction is becoming a popular way in which lean construction and green building are interacting and supporting each other; and (iv) the interaction between lean construction and green building can help to achieve more sustainable development in South Africa.","PeriodicalId":49493,"journal":{"name":"South African Journal of Industrial Engineering","volume":" ","pages":"133-143"},"PeriodicalIF":0.5,"publicationDate":"2020-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43707133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The aim of this study was to identify, validate, and describe the determinants of supervisor effectiveness in the context of engineering team-based organisations. Five supervisor effectiveness determinants were identified through the use of the systematic literature review methodology, and validated using semi-structured interviews. This paper presents the validated supervisor effectiveness determinants using the input mediator output framework.
{"title":"VALIDATION OF SUPERVISOR EFFECTIVENESS DETERMINANTS FOR ENGINEERING TEAM-BASED ORGANISATIONS","authors":"P. Zincume, Wyhan Jooste","doi":"10.7166/31-3-2430","DOIUrl":"https://doi.org/10.7166/31-3-2430","url":null,"abstract":"The aim of this study was to identify, validate, and describe the determinants of supervisor effectiveness in the context of engineering team-based organisations. Five supervisor effectiveness determinants were identified through the use of the systematic literature review methodology, and validated using semi-structured interviews. This paper presents the validated supervisor effectiveness determinants using the input mediator output framework.","PeriodicalId":49493,"journal":{"name":"South African Journal of Industrial Engineering","volume":"31 1","pages":"183-195"},"PeriodicalIF":0.5,"publicationDate":"2020-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45841481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
New technological developments allow for an increase in data generation. There is a parallel increase in business intelligence systems. As a result, numerous operational reports are continuously developed to measure operational performance. Many studies state that data-driven reporting aids valuable decision-making. However, reports need to be evaluated to identify the extent of their impact on operations. This paper provides a review of current evaluation methods, which shows that user surveys are most commonly used. These surveys are limited, as they only indicate reporting quality. Little has been done to quantify the impact of reporting. In this paper, an evaluation method is developed that assesses both the qualitative and quantitative impacts of operational reports. This method is then applied to water management and energy management reporting case studies in the mining industry. The quantitative impact ranged from R0.5-million to R7.3-million and from R0.3-million to R65.0-million for the two case studies respectively.
{"title":"EVALUATING THE IMPACT OF OPERATIONAL REPORTS","authors":"L. Botes, W. Hamer, D. Nell, P. Goosen, H. Brand","doi":"10.7166/31-3-2428","DOIUrl":"https://doi.org/10.7166/31-3-2428","url":null,"abstract":"New technological developments allow for an increase in data generation. There is a parallel increase in business intelligence systems. As a result, numerous operational reports are continuously developed to measure operational performance. Many studies state that data-driven reporting aids valuable decision-making. However, reports need to be evaluated to identify the extent of their impact on operations. This paper provides a review of current evaluation methods, which shows that user surveys are most commonly used. These surveys are limited, as they only indicate reporting quality. Little has been done to quantify the impact of reporting. In this paper, an evaluation method is developed that assesses both the qualitative and quantitative impacts of operational reports. This method is then applied to water management and energy management reporting case studies in the mining industry. The quantitative impact ranged from R0.5-million to R7.3-million and from R0.3-million to R65.0-million for the two case studies respectively.","PeriodicalId":49493,"journal":{"name":"South African Journal of Industrial Engineering","volume":"31 1","pages":"156-169"},"PeriodicalIF":0.5,"publicationDate":"2020-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48503281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"NOTE FROM THE EDITOR","authors":"T. Hattingh","doi":"10.7166/31-3-2462","DOIUrl":"https://doi.org/10.7166/31-3-2462","url":null,"abstract":"","PeriodicalId":49493,"journal":{"name":"South African Journal of Industrial Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2020-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43237616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The impact of restricted access to sustainable energy is the worst in vulnerable urban poor areas, and so an alternative approach to energy innovations is needed. To explore the possibilities for energy innovations, gender needs to be taken into account. This is especially relevant in the sub-Saharan African context, as most households are female-headed. This paper aims to explore the current state of gendered energy innovations by using a multivocal approach; it thus focuses on the existing body of knowledge at the gender—energy interface. The study is conducted in two parts: first, ‘state of the art’ is conceptualised using a multilevel approach; second, a structured literature review on gendered energy innovations is conducted in light of the structured understanding of ‘state of the art’. There is definitely room for new innovations to use gender as a strategy for solving energy security problems in urban poor environments.
{"title":"THE STATE OF THE ART OF GENDERED ENERGY INNOVATIONS: A STRUCTURED LITERATURE REVIEW","authors":"Stefani van der Merwe, I. D. Kock, J. Musango","doi":"10.7166/31-3-2427","DOIUrl":"https://doi.org/10.7166/31-3-2427","url":null,"abstract":"The impact of restricted access to sustainable energy is the worst in vulnerable urban poor areas, and so an alternative approach to energy innovations is needed. To explore the possibilities for energy innovations, gender needs to be taken into account. This is especially relevant in the sub-Saharan African context, as most households are female-headed. This paper aims to explore the current state of gendered energy innovations by using a multivocal approach; it thus focuses on the existing body of knowledge at the gender—energy interface. The study is conducted in two parts: first, ‘state of the art’ is conceptualised using a multilevel approach; second, a structured literature review on gendered energy innovations is conducted in light of the structured understanding of ‘state of the art’. There is definitely room for new innovations to use gender as a strategy for solving energy security problems in urban poor environments.","PeriodicalId":49493,"journal":{"name":"South African Journal of Industrial Engineering","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2020-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45327349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A conceptual model for the role of a project management office (PMO) in improving the usability of knowledge that is transferred between projects is proposed, and a method to investigate the role of PMOs in knowledge transfer is validated. The case of a PMO in a multinational engineering company was selected, and 24 codes within three themes were identified through qualitative data analysis of a semi-structured interview. Provisional support was found for three propositions related to three variables: the articulability of knowledge, the usability of knowledge, and the role of the PMO. The study fine-tuned a case study protocol for future investigation of the role of PMOs in improving the usability of knowledge that is transferred between projects.
{"title":"AN EXPLORATORY CASE STUDY TO VALIDATE A METHOD FOR INVESTIGATING THE ROLE OF PMOS IN KNOWLEDGE TRANSFER","authors":"Brighton Tshuma, H. Steyn, Corro C. van Waveren","doi":"10.7166/31-2-2316","DOIUrl":"https://doi.org/10.7166/31-2-2316","url":null,"abstract":"A conceptual model for the role of a project management office (PMO) in improving the usability of knowledge that is transferred between projects is proposed, and a method to investigate the role of PMOs in knowledge transfer is validated. The case of a PMO in a multinational engineering company was selected, and 24 codes within three themes were identified through qualitative data analysis of a semi-structured interview. Provisional support was found for three propositions related to three variables: the articulability of knowledge, the usability of knowledge, and the role of the PMO. The study fine-tuned a case study protocol for future investigation of the role of PMOs in improving the usability of knowledge that is transferred between projects.","PeriodicalId":49493,"journal":{"name":"South African Journal of Industrial Engineering","volume":"31 1","pages":"143-155"},"PeriodicalIF":0.5,"publicationDate":"2020-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48858234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Conventional demand forecasting and inventory management models cannot be applied to replacement parts due to their intermittent and seasonal demand. Thus the aim of this study is to compare, in the case of the strategic stocking of high turnover replacement parts, the demand forecast model currently used by construction and agricultural machinery companies with the Box-Jenkins statistical model. The results show that it is important to use a methodology based on statistical techniques in inventory management, and that the proposed model adapts better to high turnover stock control.
{"title":"DEMAND FORECASTING FOR HIGH-TURNOVER SPARE PARTS IN AGRICULTURAL AND CONSTRUCTION MACHINES: A CASE STUDY","authors":"Caue Barros Guimaraes, J. Marques, U. Tortato","doi":"10.7166/31-2-2084","DOIUrl":"https://doi.org/10.7166/31-2-2084","url":null,"abstract":"Conventional demand forecasting and inventory management models cannot be applied to replacement parts due to their intermittent and seasonal demand. Thus the aim of this study is to compare, in the case of the strategic stocking of high turnover replacement parts, the demand forecast model currently used by construction and agricultural machinery companies with the Box-Jenkins statistical model. The results show that it is important to use a methodology based on statistical techniques in inventory management, and that the proposed model adapts better to high turnover stock control.","PeriodicalId":49493,"journal":{"name":"South African Journal of Industrial Engineering","volume":"31 1","pages":"116-128"},"PeriodicalIF":0.5,"publicationDate":"2020-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47755734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Danilo Gonçalves Calvacante, Luciano Ferreira, D. Borenstein
This study was motivated by the high costs incurred by an energy company for repairable spare parts for faulty mission-critical items, particularly with those that operate until failure. The objective of this paper is to develop and apply a method for repairable spare part inventory management of run-to-failure equipment. To achieve a robust method that incorporates the data collected from previous failures, such as environmental factors and operating conditions, we propose an optimisation approach based on an accelerated failure time model. Accelerated failure time is used as a reliability regression model with covariates to describe different operational conditions. An algorithm is also developed to consider the repairable nature of the equipment, predicting the number of spare parts based on the expected number of failures in the period and the equipment repair cycle. The proposed method is applied using data from three different power units of electrical submersible pumps, a mission-critical item in oil production. The results show an average reduction of 60.6 per cent in the required number of spare parts, considering an average fill rate of 95.33 per cent. This reduction implies an estimated annual savings of around US$664,720 in inventory costs, considering the analysed units.
{"title":"PREVISION AND OPTIMISATION OF REPAIRABLE SPARE PARTS: A CASE STUDY IN THE PETROLEUM INDUSTRY","authors":"Danilo Gonçalves Calvacante, Luciano Ferreira, D. Borenstein","doi":"10.7166/31-2-2221","DOIUrl":"https://doi.org/10.7166/31-2-2221","url":null,"abstract":"This study was motivated by the high costs incurred by an energy company for repairable spare parts for faulty mission-critical items, particularly with those that operate until failure. The objective of this paper is to develop and apply a method for repairable spare part inventory management of run-to-failure equipment. To achieve a robust method that incorporates the data collected from previous failures, such as environmental factors and operating conditions, we propose an optimisation approach based on an accelerated failure time model. Accelerated failure time is used as a reliability regression model with covariates to describe different operational conditions. An algorithm is also developed to consider the repairable nature of the equipment, predicting the number of spare parts based on the expected number of failures in the period and the equipment repair cycle. The proposed method is applied using data from three different power units of electrical submersible pumps, a mission-critical item in oil production. The results show an average reduction of 60.6 per cent in the required number of spare parts, considering an average fill rate of 95.33 per cent. This reduction implies an estimated annual savings of around US$664,720 in inventory costs, considering the analysed units.","PeriodicalId":49493,"journal":{"name":"South African Journal of Industrial Engineering","volume":"31 1","pages":"156-171"},"PeriodicalIF":0.5,"publicationDate":"2020-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41828103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Healthcare supply chains ensure that there is a cost-effective availability of medicines at healthcare facilities. However, it appears that public healthcare supply chains in South Africa are experiencing significant challenges in the management and distribution of the right medicines, at the right time, and at the right cost. This has resulted in poor healthcare outcomes. Moreover, public health supply chains also face major challenges due to rising patient expectations and inefficiencies in supply chain operations. There is recent interest in increasing public health supply chain efficiency and improving patient services. To address these challenges and opportunities, other studies have suggested the transformation of healthcare supply chains from the current pure ‘push’ approach into a ‘pull’ approach, which is driven by actual customer demand (demand-driven supply chain management DDSCM). However, no guidelines exist to support the design of DDSCM in public healthcare supply chains. Therefore, through a systematic literature review, this study aims to distinguish the key success factors for the DDSCM approach from those of other industries, and subsequently develops a framework to guide the design of DDSCM for the public healthcare sector.
{"title":"BEST PRACTICES FOR DEMAND-DRIVEN SUPPLY CHAIN MANAGEMENT IN PUBLIC HEALTHCARE SECTOR: A SYSTEMATIC LITERATURE REVIEW","authors":"Munyaradzi Bvuchete, S. Grobbelaar, J. V. Eeden","doi":"10.7166/31-2-2006","DOIUrl":"https://doi.org/10.7166/31-2-2006","url":null,"abstract":"Healthcare supply chains ensure that there is a cost-effective availability of medicines at healthcare facilities. However, it appears that public healthcare supply chains in South Africa are experiencing significant challenges in the management and distribution of the right medicines, at the right time, and at the right cost. This has resulted in poor healthcare outcomes. Moreover, public health supply chains also face major challenges due to rising patient expectations and inefficiencies in supply chain operations. There is recent interest in increasing public health supply chain efficiency and improving patient services. To address these challenges and opportunities, other studies have suggested the transformation of healthcare supply chains from the current pure ‘push’ approach into a ‘pull’ approach, which is driven by actual customer demand (demand-driven supply chain management DDSCM). However, no guidelines exist to support the design of DDSCM in public healthcare supply chains. Therefore, through a systematic literature review, this study aims to distinguish the key success factors for the DDSCM approach from those of other industries, and subsequently develops a framework to guide the design of DDSCM for the public healthcare sector.","PeriodicalId":49493,"journal":{"name":"South African Journal of Industrial Engineering","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2020-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43261922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Professional bodies represent practitioners who recurrently seek guidance on industry-related problems and challenges. Research has revealed that professional bodies are lacking in effectiveness and need to improve so that their affiliates can obtain maximum value. The purpose of the study was to empirically develop a framework for the management of professional bodies by exploring the views and opinions of 92 participants employed in the management of professional bodies in South Africa. The data was collected from interviews (pilot) and from a questionnaire (primary instrument) that was analysed statistically, predominantly using factor analysis, to determine the significant factors that contributed to the development of a framework for professional bodies. Eleven significant factors emanated from the factor analysis that informed the empirically developed framework. Government, academics, and management of professional bodies are key beneficiaries of this framework, as it makes a unique contribution to the improvement of professional body management.
{"title":"TOWARDS MANAGEMENT EXCELLENCE: THE CASE OF SOUTH AFRICAN PROFESSIONAL BODIES","authors":"S. Naidoo, A. Rajcoomar","doi":"10.7166/31-2-2355","DOIUrl":"https://doi.org/10.7166/31-2-2355","url":null,"abstract":"Professional bodies represent practitioners who recurrently seek guidance on industry-related problems and challenges. Research has revealed that professional bodies are lacking in effectiveness and need to improve so that their affiliates can obtain maximum value. The purpose of the study was to empirically develop a framework for the management of professional bodies by exploring the views and opinions of 92 participants employed in the management of professional bodies in South Africa. The data was collected from interviews (pilot) and from a questionnaire (primary instrument) that was analysed statistically, predominantly using factor analysis, to determine the significant factors that contributed to the development of a framework for professional bodies. Eleven significant factors emanated from the factor analysis that informed the empirically developed framework. Government, academics, and management of professional bodies are key beneficiaries of this framework, as it makes a unique contribution to the improvement of professional body management.","PeriodicalId":49493,"journal":{"name":"South African Journal of Industrial Engineering","volume":"31 1","pages":"62-75"},"PeriodicalIF":0.5,"publicationDate":"2020-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47673460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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