Purpose: In the supply chain risk management literature, many reviews have been conducted to provide a full understanding of various aspects such as role of simulation and optimization methods in risk management, classification of risks, classification of risk mitigation strategies, and supply chain risk definitions. However, a structured review of risk impact on performance in supply chains is still lacking. Such a review is useful since the literature implies that maintaining and improving performance in risk environments are critically important to the business survival of firms in supply chains.Design/methodology/approach: This review synthesizes and analyses 48 papers published in journals from 2006 to 2020 based on the following criteria: risk type, impact mechanisms of risk (i.e., direct and indirect), performance, research method, research setting, and risk mitigation strategy.Findings: The findings conclude that the impact of risk on performance is complicated and influenced by many factors namely antecedents, mediators, and moderators.Originality/value: This review contributes to the theoretical development of SCRM research through the analysis of SCR impact mechanisms, and indicate gaps of knowledge and future research opportunities. Moreover, it helps managers to devise appropriate risk mitigation strategies thanks to a full understanding of risk impact mechanisms.
{"title":"Supply chain risk and its impact on performance: A structured literature review","authors":"T. Pham, Raffaele Testorelli, C. Verbano","doi":"10.3926/jiem.4719","DOIUrl":"https://doi.org/10.3926/jiem.4719","url":null,"abstract":"Purpose: In the supply chain risk management literature, many reviews have been conducted to provide a full understanding of various aspects such as role of simulation and optimization methods in risk management, classification of risks, classification of risk mitigation strategies, and supply chain risk definitions. However, a structured review of risk impact on performance in supply chains is still lacking. Such a review is useful since the literature implies that maintaining and improving performance in risk environments are critically important to the business survival of firms in supply chains.Design/methodology/approach: This review synthesizes and analyses 48 papers published in journals from 2006 to 2020 based on the following criteria: risk type, impact mechanisms of risk (i.e., direct and indirect), performance, research method, research setting, and risk mitigation strategy.Findings: The findings conclude that the impact of risk on performance is complicated and influenced by many factors namely antecedents, mediators, and moderators.Originality/value: This review contributes to the theoretical development of SCRM research through the analysis of SCR impact mechanisms, and indicate gaps of knowledge and future research opportunities. Moreover, it helps managers to devise appropriate risk mitigation strategies thanks to a full understanding of risk impact mechanisms.","PeriodicalId":38526,"journal":{"name":"International Journal of Industrial Engineering and Management","volume":"149 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75754533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. Prieto-Sandoval, A. Mejía-Villa, C. Jaca, M. Ormazábal
Purpose: The circular economy is a key issue for any company, city, or institution. The linear economy model, based on "take, make, use and waste" of products and resources, has discarded potentially valuable resources and caused serious contamination problems. In contrast, the circular economy (CE) model is a strategic paradigm whose purpose is to regenerate and conserve resources through closed material loops and the sustainable use of energy in its processes. Therefore, a growing number of companies are applying different tools and techniques to implement the CE principles to innovate their products, services, and processes, achieving promising results. Thus, the main objective of this study is to suggest an implementation model named “Circular clock” based on a set of tools and techniques which firms may use for implementing CE.Design/methodology/approach: The paper presents an empirical analysis based on the triangulation method that includes three different data sources: semi-structured interviews in Spain, academic literature and books, and non-academic publications from institutions and consultancy firms. Findings: The most relevant result of this study is the proposal of a Circular Clock model for circular economy implementation is based on six fields of action define in the academic literature: take, make, distribute, use, recover, and industrial symbiosis. Moreover, this study may serve as guidance in facilitating the strategic adoption of eco-innovation practices in firms' transition to a CE. Research limitations/implications: The sample of companies that participated in the triangulation is exploratory; however, this limitation is overcome by reviewing academic literature and institutional reports. On the other hand, academics could expand the selection of tools with subsequent studies.Practical implications: The current study is based on the triangulation method, which was vital to balance the theory and practice provided by academic sources, reports, and books. In addition, this study has improved our understanding of the goals or intentions that may motivate firms to implement the CE and align them with the suggested set of tools. Consequently, this study is relevant to support practitioners in selecting a tool based on the goal they want to achieve towards circular economy implementation.Social implications: This research suggests several tools; however, each organization could adapt some that it already knows. Therefore, firms and implementation leaders should customize the circle with short lines in each case. Moreover, the clock bells represent the deadline considering that every CE implementation process requires a deadline to ensure its success in micro-level or firms.Originality/value: The "circular clock" provides a didactic way for sustainability leaders, consultants, or companies to facilitate the implementation of the circular economy by choosing the field of action on which they want to focus and the most appropriate t
{"title":"Circular Clock model for circular economy implementation in firms: Balance between theory and practice","authors":"V. Prieto-Sandoval, A. Mejía-Villa, C. Jaca, M. Ormazábal","doi":"10.3926/jiem.4009","DOIUrl":"https://doi.org/10.3926/jiem.4009","url":null,"abstract":"Purpose: The circular economy is a key issue for any company, city, or institution. The linear economy model, based on \"take, make, use and waste\" of products and resources, has discarded potentially valuable resources and caused serious contamination problems. In contrast, the circular economy (CE) model is a strategic paradigm whose purpose is to regenerate and conserve resources through closed material loops and the sustainable use of energy in its processes. Therefore, a growing number of companies are applying different tools and techniques to implement the CE principles to innovate their products, services, and processes, achieving promising results. Thus, the main objective of this study is to suggest an implementation model named “Circular clock” based on a set of tools and techniques which firms may use for implementing CE.Design/methodology/approach: The paper presents an empirical analysis based on the triangulation method that includes three different data sources: semi-structured interviews in Spain, academic literature and books, and non-academic publications from institutions and consultancy firms. Findings: The most relevant result of this study is the proposal of a Circular Clock model for circular economy implementation is based on six fields of action define in the academic literature: take, make, distribute, use, recover, and industrial symbiosis. Moreover, this study may serve as guidance in facilitating the strategic adoption of eco-innovation practices in firms' transition to a CE. Research limitations/implications: The sample of companies that participated in the triangulation is exploratory; however, this limitation is overcome by reviewing academic literature and institutional reports. On the other hand, academics could expand the selection of tools with subsequent studies.Practical implications: The current study is based on the triangulation method, which was vital to balance the theory and practice provided by academic sources, reports, and books. In addition, this study has improved our understanding of the goals or intentions that may motivate firms to implement the CE and align them with the suggested set of tools. Consequently, this study is relevant to support practitioners in selecting a tool based on the goal they want to achieve towards circular economy implementation.Social implications: This research suggests several tools; however, each organization could adapt some that it already knows. Therefore, firms and implementation leaders should customize the circle with short lines in each case. Moreover, the clock bells represent the deadline considering that every CE implementation process requires a deadline to ensure its success in micro-level or firms.Originality/value: The \"circular clock\" provides a didactic way for sustainability leaders, consultants, or companies to facilitate the implementation of the circular economy by choosing the field of action on which they want to focus and the most appropriate t","PeriodicalId":38526,"journal":{"name":"International Journal of Industrial Engineering and Management","volume":"273 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77978555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Orue, A. Lizarralde, U. Apaolaza, Itxaso Amorrortu
Purpose: The theory of constraints (TOC) methodology and its drum-buffer-rope (DBR) production planning and control system are well suited to managing production plants in complex environments. The objective of this study was to design an evolution of the systematic process for implementing the third step of the TOC methodology in make-to-order environments.Design/methodology/approach: Since the research concerned a real context and the phenomenon under investigation is contemporary, a case study was chosen as the research methodology.Findings: The study investigated, through a case study, the phases and steps necessary for the systematic process to be successfully implemented in a make-to-order environment.Originality/value: The three main contributions to the systematic implementation process for the third step of the TOC model are identified as the design of the last version of the systematic process, the integration of sales and operations through the TOC methodology and the introduction of the demand-driven adaptive enterprise model’s capacity buffer.
{"title":"Designing the process of implementing step three of the theory of constraints in a make-to-order environment: Integrating sales and operation planning","authors":"A. Orue, A. Lizarralde, U. Apaolaza, Itxaso Amorrortu","doi":"10.3926/jiem.5127","DOIUrl":"https://doi.org/10.3926/jiem.5127","url":null,"abstract":"Purpose: The theory of constraints (TOC) methodology and its drum-buffer-rope (DBR) production planning and control system are well suited to managing production plants in complex environments. The objective of this study was to design an evolution of the systematic process for implementing the third step of the TOC methodology in make-to-order environments.Design/methodology/approach: Since the research concerned a real context and the phenomenon under investigation is contemporary, a case study was chosen as the research methodology.Findings: The study investigated, through a case study, the phases and steps necessary for the systematic process to be successfully implemented in a make-to-order environment.Originality/value: The three main contributions to the systematic implementation process for the third step of the TOC model are identified as the design of the last version of the systematic process, the integration of sales and operations through the TOC methodology and the introduction of the demand-driven adaptive enterprise model’s capacity buffer.","PeriodicalId":38526,"journal":{"name":"International Journal of Industrial Engineering and Management","volume":"16 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86963237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jorge Enrique Ortiz Porras, Andrei Mijailo Bancovich Erquínigo, Taddy Carolay Candia Chávez, Lisseth Margarita Huayanay Palma, Rosa Karol Moore Torres, Oscar Rafael Tinoco Gomez
Purpose: Food waste is a latent problem for society, one of the main causes being poor management of the operating processes within the food industry, which is the main reason the present research aimed to reduce raw material waste in a nectar factory.Design/methodology/approach: The methodology led to carrying out an experimental investigation where a Green Lean Six Sigma Model was applied, whose foundation was the use of tools such as Environmental Value Stream Mapping (E - VSM), DMAIC (Define - Measure - Analyze - Improve - Control), Poka Yoke and DOE (Design of Experiments), the data obtained were exposed to an inferential statistical analysis using tests such as Anderson - Darling and T-Student.Findings: As a final result, a waste reduction of 2.23% was obtained, which is equivalent to approximately 120 kg of useful raw material, in addition the environmental impact was reduced by 2.2%, waste costs were also reduced by approximately 5.5% and produced an increase in global productivity by 2.4%.Research limitations/implications: It is shown that the application of methodologies such as Green, Lean and Six Sigma in the food industry present benefits during and after the application of the model; such as preventive control of waste, standardization in processes; benefits that, in coordination with an organizational culture of continuous improvement, can significantly improve the current state of companies.Practical implications: The positive obtained results support the methodology proposed by the authors to reduce the waste of agricultural raw material. It is expected to be a benchmark for other similar organizations that seek to generate greater productivity in line with the search for environmentally sustainable operations.Originality/value: This is one of the first studies that aims to reduce the waste of raw materials in food processing companies, considering aspects of mitigating environmental impact.
{"title":"Green Lean Six Sigma model for waste reduction of raw material in a nectar manufacturing company of Lima, Peru","authors":"Jorge Enrique Ortiz Porras, Andrei Mijailo Bancovich Erquínigo, Taddy Carolay Candia Chávez, Lisseth Margarita Huayanay Palma, Rosa Karol Moore Torres, Oscar Rafael Tinoco Gomez","doi":"10.3926/jiem.4916","DOIUrl":"https://doi.org/10.3926/jiem.4916","url":null,"abstract":"Purpose: Food waste is a latent problem for society, one of the main causes being poor management of the operating processes within the food industry, which is the main reason the present research aimed to reduce raw material waste in a nectar factory.Design/methodology/approach: The methodology led to carrying out an experimental investigation where a Green Lean Six Sigma Model was applied, whose foundation was the use of tools such as Environmental Value Stream Mapping (E - VSM), DMAIC (Define - Measure - Analyze - Improve - Control), Poka Yoke and DOE (Design of Experiments), the data obtained were exposed to an inferential statistical analysis using tests such as Anderson - Darling and T-Student.Findings: As a final result, a waste reduction of 2.23% was obtained, which is equivalent to approximately 120 kg of useful raw material, in addition the environmental impact was reduced by 2.2%, waste costs were also reduced by approximately 5.5% and produced an increase in global productivity by 2.4%.Research limitations/implications: It is shown that the application of methodologies such as Green, Lean and Six Sigma in the food industry present benefits during and after the application of the model; such as preventive control of waste, standardization in processes; benefits that, in coordination with an organizational culture of continuous improvement, can significantly improve the current state of companies.Practical implications: The positive obtained results support the methodology proposed by the authors to reduce the waste of agricultural raw material. It is expected to be a benchmark for other similar organizations that seek to generate greater productivity in line with the search for environmentally sustainable operations.Originality/value: This is one of the first studies that aims to reduce the waste of raw materials in food processing companies, considering aspects of mitigating environmental impact.","PeriodicalId":38526,"journal":{"name":"International Journal of Industrial Engineering and Management","volume":"37 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81126202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Puadi Haming, Arminas Arminas, Nofias Fajri, Dodi Efendi
PT XYZ is a crumb rubber company that produces SIR 10 and rubber smoke sheets (RSS). As the biggest crumb rubber-produced company in Indonesia PT XYZ makes the production process sustainable. The often problem in this company is machine breakdown that occurs downtime value to be high. The highest downtime value from October 2020 until March 2021 was the Prebreaker Machine whose total downtime value was 1875 minutes. The Reliability Centered Maintenance (RCM) method is used for decreasing downtime value. The RCM is integrated with Failure Mode Effect Analysis (FMEA) for analyzing The Highest Risk Priority Number (RPN). The research results that the optimal maintenance time of the Prebreaker Machine is 51 hours which means the Prebreaker Machine is maintained after operation for 51 hours.
{"title":"THE MAINTENANCE INTERVAL OF PREBREAKER CRITICAL COMPONENTS USING RELIABILITY-CENTERED MAINTENANCE IN PT XYZ","authors":"Puadi Haming, Arminas Arminas, Nofias Fajri, Dodi Efendi","doi":"10.33536/jiem.v8i1.1268","DOIUrl":"https://doi.org/10.33536/jiem.v8i1.1268","url":null,"abstract":"PT XYZ is a crumb rubber company that produces SIR 10 and rubber smoke sheets (RSS). As the biggest crumb rubber-produced company in Indonesia PT XYZ makes the production process sustainable. The often problem in this company is machine breakdown that occurs downtime value to be high. The highest downtime value from October 2020 until March 2021 was the Prebreaker Machine whose total downtime value was 1875 minutes. The Reliability Centered Maintenance (RCM) method is used for decreasing downtime value. The RCM is integrated with Failure Mode Effect Analysis (FMEA) for analyzing The Highest Risk Priority Number (RPN). The research results that the optimal maintenance time of the Prebreaker Machine is 51 hours which means the Prebreaker Machine is maintained after operation for 51 hours.","PeriodicalId":38526,"journal":{"name":"International Journal of Industrial Engineering and Management","volume":"57 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88008607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dinarisni Purwanningrum, H. Khairunnisa, Mayesti Kurnianingtias, Tuti Purwati Tuwarno
Inventory management must be implemented properly so that the flow of goods can be controlled easily. A large number of small sized tools and materials in the workshop of Garment Engineering major require a well-managed inventory. Moreover, the rapid circulation of their inflow and outflow also needs to be addressed well. The garment workshop managers currently only record the material flow manually in the logbook, so it is necessary to design an application that can help them achieving more effective and efficient records. This designed application contains information about the amount of workshop material inflow, outflow and their availability. There are other features which considers the number of materials needed based on the available stock. Barcode system is also utilized to ease the data input process. Usability test was then performed to the application using System Usability Scale (SUS) questionnaire, resulting in average of 63,75 from all of the respondents. That value shows that this application has a low level of usability. Where it is actually understandable since this is the first prototype for the next application developments. All of the application menu and features can be successfully running and the application also helps the garment workshop managers a lot, thus in accordance with the purpose of making this application
{"title":"DESIGNING A WEB-BASED APPLICATION OF MATERIAL AND INVENTORY MANAGEMENT FOR GARMENT WORKSHOP","authors":"Dinarisni Purwanningrum, H. Khairunnisa, Mayesti Kurnianingtias, Tuti Purwati Tuwarno","doi":"10.33536/jiem.v8i1.1200","DOIUrl":"https://doi.org/10.33536/jiem.v8i1.1200","url":null,"abstract":"Inventory management must be implemented properly so that the flow of goods can be controlled easily. A large number of small sized tools and materials in the workshop of Garment Engineering major require a well-managed inventory. Moreover, the rapid circulation of their inflow and outflow also needs to be addressed well. The garment workshop managers currently only record the material flow manually in the logbook, so it is necessary to design an application that can help them achieving more effective and efficient records. This designed application contains information about the amount of workshop material inflow, outflow and their availability. There are other features which considers the number of materials needed based on the available stock. Barcode system is also utilized to ease the data input process. Usability test was then performed to the application using System Usability Scale (SUS) questionnaire, resulting in average of 63,75 from all of the respondents. That value shows that this application has a low level of usability. Where it is actually understandable since this is the first prototype for the next application developments. All of the application menu and features can be successfully running and the application also helps the garment workshop managers a lot, thus in accordance with the purpose of making this application","PeriodicalId":38526,"journal":{"name":"International Journal of Industrial Engineering and Management","volume":"11 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82101187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In the era of economic digitalization, global business and industry competition is very tight and moves fast. Fashion, trends, and innovations are growing vigorously so that all business and industry players continue to increase their productivity in all fields. The increase in productivity is in line with the company's efforts to increase profits along with optimal product and service quality to consumers. However, efforts to increase it will be hampered by several aspects of waste, this is what is felt by small and medium business actors such as SBRC Furniture which is engaged in the production of carving frames. This research aims to identify various wastes that occur by changing them through the Kaizen method to provide constructive notes to increase business productivity.
{"title":"INCREASING THE PRODUCTIVITY OF THE FURNITURE INDUSTRY WITH KAIZEN CASE STUDY IN SBRC FURNITURE JEPARA","authors":"A. Cahyono, Muhamad abdul Jumali","doi":"10.33536/jiem.v8i1.1466","DOIUrl":"https://doi.org/10.33536/jiem.v8i1.1466","url":null,"abstract":"In the era of economic digitalization, global business and industry competition is very tight and moves fast. Fashion, trends, and innovations are growing vigorously so that all business and industry players continue to increase their productivity in all fields. The increase in productivity is in line with the company's efforts to increase profits along with optimal product and service quality to consumers. However, efforts to increase it will be hampered by several aspects of waste, this is what is felt by small and medium business actors such as SBRC Furniture which is engaged in the production of carving frames. This research aims to identify various wastes that occur by changing them through the Kaizen method to provide constructive notes to increase business productivity.","PeriodicalId":38526,"journal":{"name":"International Journal of Industrial Engineering and Management","volume":"39 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86224461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Irma Nur Afiah, Dinda Dwi Adelya Musda, Dirgahayu Lantara, Arfandi Ahmad
Arasoe Bone Sugar Factory is one of the sugar factories in Bone Regency, South Sulawesi. The production process at this company entirely uses machines that run automatically. However, the sugarcane harvesting activity is still carried out manually. All sugarcane harvesting activities result in physical workload on workers, especially when lifting sugarcane since in one loading, the workers are able to lift more than 30 kg of sugarcane. This activity is carried out repeatedly which results in fatigue on the harvest workers. The other factors that affect fatigue on the harvest workers are the harvested sugarcane plantations that can reach approximately 7 hectares in area and the work that lasts for 7 hours each day. This study aims to determine how much physical workload is experienced by sugarcane harvest workers and to determine how long the rest break is based on the physical workload that is obtained while working for the sugarcane harvest workers. The assessment of physical workload was carried out using the Cardiovascular Load (%CVL) method and the calculation of the length of rest break was carried out using a physiological approach. Based on the results of calculating the percentage of Cardiovascular Load (%CVL), it was discovered that all respondents experienced fatigue consisting of 5 workers with a %CVL of 60%, 13 people with %CVL of 80%, and 2 people with %CVL of 100%. Therefore, all respondents were included into the category of heavy physical workload. The optimal rest break is 80.79 minutes, while the rest break given is only 60 minutes. Hence, an additional 20.79 minutes of rest break is needed. The rest break of 20.79 minutes is used for spontaneous breaks, i.e., short break after the workload.
{"title":"ANALYSIS OF THE PHYSICAL WORKLOAD OF SUGARCANE HARVEST WORKERS AS THE BASIS FOR DETERMINING THE LENGTH OF REST BREAK AT BONE ARASOE SUGAR FACTORY","authors":"Irma Nur Afiah, Dinda Dwi Adelya Musda, Dirgahayu Lantara, Arfandi Ahmad","doi":"10.33536/jiem.v8i1.1278","DOIUrl":"https://doi.org/10.33536/jiem.v8i1.1278","url":null,"abstract":"Arasoe Bone Sugar Factory is one of the sugar factories in Bone Regency, South Sulawesi. The production process at this company entirely uses machines that run automatically. However, the sugarcane harvesting activity is still carried out manually. All sugarcane harvesting activities result in physical workload on workers, especially when lifting sugarcane since in one loading, the workers are able to lift more than 30 kg of sugarcane. This activity is carried out repeatedly which results in fatigue on the harvest workers. The other factors that affect fatigue on the harvest workers are the harvested sugarcane plantations that can reach approximately 7 hectares in area and the work that lasts for 7 hours each day. This study aims to determine how much physical workload is experienced by sugarcane harvest workers and to determine how long the rest break is based on the physical workload that is obtained while working for the sugarcane harvest workers. The assessment of physical workload was carried out using the Cardiovascular Load (%CVL) method and the calculation of the length of rest break was carried out using a physiological approach. Based on the results of calculating the percentage of Cardiovascular Load (%CVL), it was discovered that all respondents experienced fatigue consisting of 5 workers with a %CVL of 60%, 13 people with %CVL of 80%, and 2 people with %CVL of 100%. Therefore, all respondents were included into the category of heavy physical workload. The optimal rest break is 80.79 minutes, while the rest break given is only 60 minutes. Hence, an additional 20.79 minutes of rest break is needed. The rest break of 20.79 minutes is used for spontaneous breaks, i.e., short break after the workload.","PeriodicalId":38526,"journal":{"name":"International Journal of Industrial Engineering and Management","volume":"59 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79911715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fentje Abdul Rauf, Jamal Darusalam Giu, S. Junus, H. Uloli, Ibnu Sanjaya
Natural fiber as a sound-absorbing biocompisite material is believed to not only reduce noise pollution but also to absorb heat. There are many underutilized coconut husks, which so far the use of coconut husks is only conventional. The focus of this research is to find the right solution in the use of coconut fiber as well as composite material engineering for technological purposes. The research method will use pure experiments using controlled specimens in the mechanical Engineering laboratory of ITB, including mechanicals tests, soundproofing. The results of he tensile test are the tensile strength of the largest coconut fiber composite fiber is found in the fiber volume fraction of 25% with a value of 59.072 Mpa, followed by 20% fiber fraction with a value of 59.025 Mpa, 15% fiber fraction with a value of 56.736 Mpa, fiber fraction 10% with a value of 56.807 Mpa, 5% fiber fraction with a value 53.736. and for he results of the soundproof test with frequency of 250 Hz – 2000 Hz at 5% fiber fraction, it has an absorption coefficient value of 0,03, 10% fiber fraction, has an absorption coefficient value of 0.18, 15% fiber fraction has an absorption coefficient value of 0.18. 0.18, the fiber fraction of 20 has an absorption coefficient of 0.22, the fiber fraction of 25% has an absorption coefficient of 0.28.
{"title":"COMPOSITE VOICE-ABSORBING MATERIALS MADE OF POLYESTER-REINFORCED PARTICLES WASTE GLASS PLASTIC AD BIOCOMPOSITE FIBER","authors":"Fentje Abdul Rauf, Jamal Darusalam Giu, S. Junus, H. Uloli, Ibnu Sanjaya","doi":"10.33536/jiem.v8i1.1324","DOIUrl":"https://doi.org/10.33536/jiem.v8i1.1324","url":null,"abstract":"Natural fiber as a sound-absorbing biocompisite material is believed to not only reduce noise pollution but also to absorb heat. There are many underutilized coconut husks, which so far the use of coconut husks is only conventional. The focus of this research is to find the right solution in the use of coconut fiber as well as composite material engineering for technological purposes. The research method will use pure experiments using controlled specimens in the mechanical Engineering laboratory of ITB, including mechanicals tests, soundproofing. The results of he tensile test are the tensile strength of the largest coconut fiber composite fiber is found in the fiber volume fraction of 25% with a value of 59.072 Mpa, followed by 20% fiber fraction with a value of 59.025 Mpa, 15% fiber fraction with a value of 56.736 Mpa, fiber fraction 10% with a value of 56.807 Mpa, 5% fiber fraction with a value 53.736. and for he results of the soundproof test with frequency of 250 Hz – 2000 Hz at 5% fiber fraction, it has an absorption coefficient value of 0,03, 10% fiber fraction, has an absorption coefficient value of 0.18, 15% fiber fraction has an absorption coefficient value of 0.18. 0.18, the fiber fraction of 20 has an absorption coefficient of 0.22, the fiber fraction of 25% has an absorption coefficient of 0.28.","PeriodicalId":38526,"journal":{"name":"International Journal of Industrial Engineering and Management","volume":"32 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88964604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
St Nova Meirizha, D. Anggraini, Agus Mulyadi, Rio Saputra
UKM Tunas Harapan produces woven strapping products such as shopping baskets, along-along, mats, and pots with distribution areas such as Riau, North Sumatra, West Sumatra, Jambi, and Aceh. UKM find it difficult to plan the amount of production and control sales so that they often overproduce, which causes profits to be not maximized. The research objectives are calculating the optimal production amount and allocation to each distribution area, making an optimal sales budget plan, and calculating the profit obtained using the Lagrange multiplier method. The optimal number of production results for each product per period: 1878 shopping baskets, 1983 along-along, 283 mats, and 1425 pots. The allocation for each distribution area of each product in 1 year is Riau: 4662 shopping baskets, along- 4807 along, 837 mats, and 3658 pots. West Sumatra: 4445 shopping baskets, 5097 along-along, 841 mats, 3262 pots. North Sumatra: 5023 shopping baskets, 5608 along-along, 714 mats, 4017 pots. Jambi: 4198 shopping baskets, 4197 along-along, 615 mats, 3743 pots. Aceh: 4211 shopping baskets, 4092 along-along, 417 mats, pots, as many as 2421. While the optimal sales budget is Rp. 3,496.856,390 with the total profit obtained Rp. 1,748,394,343 the percentage of profit is 49.99%.
{"title":"PRODUCTION PLANNING OPTIMIZATION AND SALES BUDGETING USING LAGRANGE MULTIPLIER IN WOVEN STRAPPING CRAFTS","authors":"St Nova Meirizha, D. Anggraini, Agus Mulyadi, Rio Saputra","doi":"10.33536/jiem.v8i1.1517","DOIUrl":"https://doi.org/10.33536/jiem.v8i1.1517","url":null,"abstract":"UKM Tunas Harapan produces woven strapping products such as shopping baskets, along-along, mats, and pots with distribution areas such as Riau, North Sumatra, West Sumatra, Jambi, and Aceh. UKM find it difficult to plan the amount of production and control sales so that they often overproduce, which causes profits to be not maximized. The research objectives are calculating the optimal production amount and allocation to each distribution area, making an optimal sales budget plan, and calculating the profit obtained using the Lagrange multiplier method. The optimal number of production results for each product per period: 1878 shopping baskets, 1983 along-along, 283 mats, and 1425 pots. The allocation for each distribution area of each product in 1 year is Riau: 4662 shopping baskets, along- 4807 along, 837 mats, and 3658 pots. West Sumatra: 4445 shopping baskets, 5097 along-along, 841 mats, 3262 pots. North Sumatra: 5023 shopping baskets, 5608 along-along, 714 mats, 4017 pots. Jambi: 4198 shopping baskets, 4197 along-along, 615 mats, 3743 pots. Aceh: 4211 shopping baskets, 4092 along-along, 417 mats, pots, as many as 2421. While the optimal sales budget is Rp. 3,496.856,390 with the total profit obtained Rp. 1,748,394,343 the percentage of profit is 49.99%.","PeriodicalId":38526,"journal":{"name":"International Journal of Industrial Engineering and Management","volume":"17 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82758702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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