Brazilian Journal of Operations & Production Management最新文献

{"title":"Sales & operations planning: case study on the engineer-to -order production model in the entertainment industry","authors":"Luciana de Oliveira Pedra Romão, Luis Felipe Scavarda, M. Seeling","doi":"10.14488/BJOPM.2021.016","DOIUrl":"https://doi.org/10.14488/BJOPM.2021.016","url":null,"abstract":"Goal: This article characterizes the application of the Sales and Operations Planning (S&OP) process in an audiovisual content production industry, whose production model is Engineer-To-Order (ETO), adding important empirical knowledge for S&OP in this production strategy within a unique context.  \u0000 Design / Methodology / Approach: The methodology adopted is based on an exploratory case study. The research adopts a well-known framework to characterize the process observed within the company. \u0000 Results: The findings characterize the S&OP process based on the main components of the context, inputs, structure and process and outcomes / results, demonstrating that, even with the particularities of the industry, S&OP can be a key process to manage the business complexity and to achieve the objectives by the company. \u0000 Limitations of the investigation: This study was based on the observations made in only one company, which is a research limitation towards the generalizability of the findings. Thus, for a deeper understanding of the theme, future research is necessary, expanding the observations to other companies. \u0000 Practical implications: Practitioners can take stock of the S&OP characterization and the lessons learned herein to help to support their S&OP initiatives, especially regarding ETO contexts. \u0000 Originality / Value: This article sought to reduce the research-practice gap in the literature concerning the need for a complete characterization of the S&OP process from empirical researches and the understanding of S&OP application in the ETO production model.","PeriodicalId":54139,"journal":{"name":"Brazilian Journal of Operations & Production Management","volume":"102 1","pages":"1-12"},"PeriodicalIF":1.1,"publicationDate":"2021-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76909979","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}

{"title":"Impact of COVID-19 pandemic on logistics performance, economic growth and tourism industry of Thailand: an empirical forecasting using ARIMA","authors":"L. Janjua, F. Muhammad, Patthaphon Sukjai, A. Rehman, Zhang Yu","doi":"10.14488/BJOPM.2021.001","DOIUrl":"https://doi.org/10.14488/BJOPM.2021.001","url":null,"abstract":"Goal: The tourism sector always plays a vital role among other sectors, which contributes heavily to Thailand’s GDP. Due to the recent Pandemic crises, the tourism industry worldwide faces a decline. The aim of writing this paper is to forecast, tourist inflow for Thailand for the next nine months by using ARIMA forecasting Design / Methodology / Approach: In order to meet the study objective, we adopted the univariate time series forecasting of tourist arrival. The AR(12) and MA(12) process with d(1) order to specify the appropriate model also applied for forecasting selection of international tourist arrivals, after diagnostic checking of series through correlogram Q-statistics and correlogram of residuals for adjusted ARIMA (12,1,12) in which we found low residual against 70 lags. Results: The evidence predicts that in the next nine months, Thailand will face significant negative zone arrival of international tourists due to the COVID-19 pandemic crises, which adversely affect Thailand’s economy due to the shortfall of international tourist arrivals. However decline in tourist arrival will eventually decrease air pollution in Thailand, thus it positively impact on environmental quality. Limitations of the investigation: In terms of limitation of this study, this forecasting is only valid for Thailand based on historical and current data. Practical implications: We highly recommend government of Thailand for enchasing overall logistics performance and furthermore increase use to renewable energy and green performance in their tourism sector. Originality / Value: This study provides tourism forecasting estimation for Thailand, which can help government to reshape their tourism policies due to Covid-19 pandemic crises. As this study is the first attempt to provide forecasting related with Covid-19 for tourism sector. © 2021, Associacao Brasileira de Engenharia de Producao. All rights reserved.","PeriodicalId":54139,"journal":{"name":"Brazilian Journal of Operations & Production Management","volume":"34 1","pages":"1-13"},"PeriodicalIF":1.1,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86608855","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}

{"title":"Implications of Industry 4.0 to companies performance: a comparison between Brazil and Germany","authors":"Paulo Henrique Brunheroto, Dagmar Piotr Tomanek, F. Deschamps","doi":"10.14488/BJOPM.2021.009","DOIUrl":"https://doi.org/10.14488/BJOPM.2021.009","url":null,"abstract":"Goal: The present paper aims to investigate what are the main implications of Industry 4.0 technologies for production management. \u0000Design / Methodology / Approach: The study was carried out through a survey with companies of the metal-mechanic and automotive industry of the Curitiba Metropolitan Region (Brazil) and of the Upper Bavaria Region (Germany) in order to determine the overall implementation level of technologies commonly associated with Industry 4.0 and their respective impacts to operations performance objectives. \u0000Results: The results reveal that the overall implementation and improvement levels of the Industry 4.0 technologies is higher in Germany than in Brazil. Regarding the technologies, the Internet of Things presented one of the highest overall improvement levels for both regions, showing that the adoption of these technology could bring significant improvements for all performance objectives. \u0000Limitations of the investigation: The results obtained with the present research refer only to the scenario of Curitiba and Metropolitan Region and the Upper Bavaria Region, more specifically from the companies of the metal-mechanic and automotive sectors and may differ from other sectors or regions. \u0000Practical implications: From this research, companies that are willing to invest in new technologies can find a starting point to understand the benefits that they can possibly achieve based on results obtained from companies that have already adopted the technologies in Brazil and Germany. \u0000Originality / Value: Studies that formally discuss the implications of the Industry 4.0 technologies for production management are lacking. Most studies focus excessively on the technologies without approaching their impact on management systems.","PeriodicalId":54139,"journal":{"name":"Brazilian Journal of Operations & Production Management","volume":"10 1","pages":"1-10"},"PeriodicalIF":1.1,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90052150","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}

{"title":"Job, career or calling: a qualitative exploration of the meaning of work among Brazilian undergraduate architecture students","authors":"Pedro Grillo, Daniel Pereira de Almeira, Édison Renato Silva","doi":"10.14488/BJOPM.2021.002","DOIUrl":"https://doi.org/10.14488/BJOPM.2021.002","url":null,"abstract":"Goal: To explore the relationship between different motivations and expectations and attributed meanings of work: as a job, career or calling. \u0000Design / Methodology / Approach: A survey with 82 undergraduate architecture and urbanism students was carried out, using with two seminal meaning of work questionnaires. Results were analyzed qualitatively. \u0000Results: (i) It is viable to analyze work as a job, career or calling; (ii) most of the interviewees (90%) faces work as something more than a job; (iii) It was shown that each subgroup has different motivations; (iv) It was also demonstrated that this subject is perceived as of great relevance for young people. \u0000Limitations of the investigation: Samples (size and subgroup) and qualitative analyses of the results were the major limitations. Therefore, bigger samples and different interviewees could increase validity of results. \u0000Practical implications: For organizations, the human resources department could add strategies about work perception on the employee hiring process. For individuals, the awareness of multiple meanings of work could be helpful in changing personal insights that influence careers and wellness. \u0000Originality / Value: The paper brings unprecedent approach and has some contributions to the field, such as: questionnaires translations and their use combined for the first time, besides the sample choice, which has also never been addressed before with this approach.","PeriodicalId":54139,"journal":{"name":"Brazilian Journal of Operations & Production Management","volume":"79 1","pages":"1-13"},"PeriodicalIF":1.1,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86597420","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}

{"title":"Economic evaluation of hazard control technology in a wet process cement plant","authors":"O. O. Akinyemi, H. O. Adeyemi, Adeshinaayomi Lawal Akintan, M. Sulaiman, A. O. Sadiq, O. Folorunsho","doi":"10.14488/BJOPM.2021.005","DOIUrl":"https://doi.org/10.14488/BJOPM.2021.005","url":null,"abstract":"Goal:  Retrofit technology has been suggested for the reduction of CO2 emission in cement manufacturing but the economic justification of this retrofit technology is rarely or not available. This research study aimed to evaluate the beneficial value of retrofit technology aimed at reducing CO2 emission in a wet process cement plant. \u0000Design / Methodology / Approach: Engineering Economic and cost estimation techniques were used to evaluate the overall annual cost of combination of retrofit technology. The overall annual cost of retrofit technology was determined in terms of capital cost, operation and maintenance cost and energy cost savings of retrofit. \u0000Results: The best strategy to reduce CO2 emission is the combination of adjustable speed drive for kiln; kiln drive efficiency improvement for kiln and process control and management system for kiln at 6% reduction target, giving a cost savings of $520,836 on retrofit for 10years and 1.41% reduction in total cost. \u0000Limitations of the investigation: Getting adequate plant data in Nigeria was a constraint during the research. \u0000Practical implications:  The results presented if implemented by Cement plant operators will ensure reduction in the CO2 emission and government can enforce Cement plant operators to adhere to strict environmental and safety regulations while litigations and sanctions can be employed to implements this policy. \u0000Originality / Value:  The study established economic justification of retrofit technology for CO2 emission reduction before eventual implementation.","PeriodicalId":54139,"journal":{"name":"Brazilian Journal of Operations & Production Management","volume":"87 17 1","pages":"1-15"},"PeriodicalIF":1.1,"publicationDate":"2021-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90752521","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}

{"title":"Influence of artificial intelligence on public employment and its impact on politics: a systematic literature review","authors":"João Reis, Paula Espírito Santo, N. Melão","doi":"10.14488/BJOPM.2021.010","DOIUrl":"https://doi.org/10.14488/BJOPM.2021.010","url":null,"abstract":"Goal: Public administration is constantly changing in response to new challenges, including the implementation of new technologies such as robotics and artificial intelligence (AI). This new dynamic has caught the attention of political leaders who are finding ways to restrain or regulate AI in public services, but also of scholars who are raising legitimate concerns about its impacts on public employment. In light of the above, the aim of this research is to analyze the influence of AI on public employment and the ways politics are reacting. \u0000Design/Methodology/Approach: We have performed a systematic literature review to disclose the state-of-the-art and to find new avenues for future research. \u0000Results: The results indicate that public services require four kinds of intelligence – mechanical, analytical, intuitive, and empathetic – albeit, with much less expression than in private services. \u0000Limitations of the investigation: This systematic review provides a snapshot of the influence of AI on public employment. Thus, our research does not cover the whole body of knowledge, but it presents a holistic understanding of the phenomenon. \u0000Practical implications: As private companies are typically more advanced in the implementation of AI technologies, the for-profit sector may provide significant contributions in the way states can leverage public services through the deployment of AI technologies. \u0000Originality/Value: This article highlights the need for states to create the necessary conditions to legislate and regulate key technological advances, which, in our opinion, has been done, but at a very slow pace.","PeriodicalId":54139,"journal":{"name":"Brazilian Journal of Operations & Production Management","volume":"52 1","pages":"1-22"},"PeriodicalIF":1.1,"publicationDate":"2021-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75377962","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}

{"title":"Application of costing methods: a case study in a retailer in the Triângulo Mineiro","authors":"A. Solon, F. Araújo, Flavia Brito Araújo","doi":"10.14488/BJOPM.2021.006","DOIUrl":"https://doi.org/10.14488/BJOPM.2021.006","url":null,"abstract":"Goal: The aim of this article is to show the importance of applying costing methods to increase the contribution margin and decision-making, besides helping the company to become more competitive against competitors. Design / Methodology / Approach: This study carried out a case study of a quantitative nature, based on bibliographic works. He employed a semi-structured interview. The Direct / Variable Costing method was used to recognize points that could be improved. In addition, the data was organized into spreadsheets in the Office package. Results: The results of the survey show at the end of the action survey that the company chose to outsource the raw material from its second item of highest revenue: cheese bread. With the change, the item increased its contribution margin by 30.16% and reduced costs by 77.98%, increasing the company's profit, reducing the product's equilibrium point from 54.14% to 4.14% of average daily production. Limitations of the research: As limitations of the study, we highlight that the company passed on the already established costs for some products, so the costs were calculated considering this percentage. Practical Implications: Its practical implications are to demonstrate the importance of the relationship between costs and sales price as a decision-making strategy. Originality / Value: The study contributes to the academic area and adds knowledge related to costs and sales price for the bakery sector, being useful for users and interested in the bakery sector and its costs.","PeriodicalId":54139,"journal":{"name":"Brazilian Journal of Operations & Production Management","volume":"94 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80655107","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}

{"title":"Systematic literature review: opportunities and trends to the post-outbreak period of COVID-19","authors":"B. Tokarz, E. Kohlbeck, F. H. Beuren, A. B. Fagundes, D. Pereira","doi":"10.14488/BJOPM.2021.030","DOIUrl":"https://doi.org/10.14488/BJOPM.2021.030","url":null,"abstract":"Goal: The aim of this study is to conduct a systematic literature review to identify opportunities to minimize Covid-19 impacts on businesses. Design / Methodology / Approach: The methodology used corresponds to a literature systematic review, covering bibliometric and content analysis. For this purpose, the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) was employed in the literature search. In total, 98 papers were selected to compose the bibliometric analysis, of which 14 are within the scope of the investigation (content analysis). Results: Bibliometric results present a grouping of keywords, authors' co-citation network, geographic distribution of publications and main journals. In the content analysis, trends for post-pandemic economy are pointed out, unveiling guidelines and opportunities to ensure the resilience of business proposals. Limitations of the investigation: The conclusions present limitations inherent to literature review papers, where filters are used to limit the search. In this work, the research was restricted to articles, published between 2015 and 2020 and written in English. Practical implications: This article proposes perspectives to react in a resilient way in the post-Pandemic period of Covid-19, in order to guarantee the permanence and competitiveness of the companies in the market. Originality / Value: Product-Service Systems and Circular Economy were found to be related to the trends and opportunities identified for the short-future economy. © 2021, Associacao Brasileira de Engenharia de Producao. All rights reserved.","PeriodicalId":54139,"journal":{"name":"Brazilian Journal of Operations & Production Management","volume":"35 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87796537","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}

{"title":"COVID-19 and the fragility of Brazilian small farming resilience","authors":"Alessandra Bellas, M. C. Cordeiro, Luan Santos, Luís Marujo","doi":"10.14488/BJOPM.2021.027","DOIUrl":"https://doi.org/10.14488/BJOPM.2021.027","url":null,"abstract":"Goal: The paper aims to investigate the insights of the resilience mechanisms of Brazilian small farms facing COVID-19. Design / Methodology / Approach: The research path involves three cases studies: two small but relevant producers of fruit and vegetable and a cooperative of family farmers in Rio de Janeiro through semi-structured interviews and concept maps. We also made data triangulation using literature review. Results: We observed that the main challenges for resilience in agro business are: 1) tight budgets and difficulty in accessing credit, 2) Many producers are in an informal fiscal situation, 3) Lack of human resources, 4) Low-technology methods, 5) Difficulty in adding value to “raw” products. Besides, we have also identified a dangerous reduction in federal investments in family farming incentive programs in recent years, which may have worsened the weaknesses of these businesses in the face of COVID-19 Limitations of the investigation: Since this is a qualitative study for preliminary investigation of the topic through mental models, the sample of focal respondents was small (three cases). Practical implications: This study enables the analysis of the Brazilian small farms challenges to survive in times of growing uncertainty. Originality / Value: This research lays the foundations for future research to explore the underlying theory and practice involved, with the aim of creating resilient local supply chains. © 2021, Associacao Brasileira de Engenharia de Producao. All rights reserved.","PeriodicalId":54139,"journal":{"name":"Brazilian Journal of Operations & Production Management","volume":"18 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78992926","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}

{"title":"A multi-objective scheduling algorithm for multi-mode resource constrained projects in the presence of uncertain resource availability","authors":"Pouya Mehrdad, Aidin Delgoshaei, Ahad Ali","doi":"10.14488/BJOPM.2021.007","DOIUrl":"https://doi.org/10.14488/BJOPM.2021.007","url":null,"abstract":"Goal: The issue of resource allocation is a major concern for project engineers in the scheduling process of a project. Resources over-allocation are often seen in practice after the scheduling of a project, which makes scheduling unhelpful. Modifying an over-allocated schedule is very complicated and requires a lot of effort and time. Besides, during the scheduling process of resource-constrained projects in the constructing companies, managers should concern more than one objective at the same time. This research aims to propose a new heuristic algorithm for minimizing project completion time, cost or maximizing quality of execution of activities simultaneously while multi-mode activities are taken into consideration. Design / Methodology / Approach: In this research, a new heuristic method is proposed for solving multi-objective scheduling problem for multi-mode resource constrained project scheduling problems (MRCPSPs) where the aim is maximizing the net present value (NPV) of project, minimize completion time and maximize the quality of executing activities simultaneously and along with emerging the uncertainty of resources availability and activity durations. The proposed method is then coded by Matlab® 2016. Results: The outcomes of solving small, medium and large scale case studies, the following results achieved: (i) the algorithm could solve all problems in different circumstances with no difficulties; (ii) the large scale problems (with 200 activities, 20 resources and 3 execution modes for each activity) could be solved in 4.43 seconds. (iii) in none of the studied cases over-allocation problem. The proposed method can be considered among the fastest scheduling algorithms found in the literature. In addition, it is found that makespan, NPV and quality have co-relation must be taken into consideration during the scheduling process. Limitations of the investigation: The main limitations of this research is that it only covers resource constrained project scheduling. Moreover, risk factors associated with the objectives of this research have yet to be addressed in future research studies. Practical implications: The performance of the algorithm is validated by using 24 series of dataset that are found in the literature. In order to verify its performance in real practice, it has been applied for a part of a construction project in Malaysia. The outcomes indicated that the algorithm scheduled the problem with 23 activities, 5 constrained resources and 2 execution modes in less than a second and with no over-allocations. The proposed multi-objective algorithm allows the project managers to consider NPV, completion time and quality of activities while scheduling a multi-mode project. In practice, this algorithm can provide a better atmosphere for managers while they aim to consider more than one objective during the scheduling process. Originality / Value: The proposed algorithm is original and can be of great value for future studies ","PeriodicalId":54139,"journal":{"name":"Brazilian Journal of Operations & Production Management","volume":"15 1","pages":"1-26"},"PeriodicalIF":1.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73095190","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}