Production最新文献

{"title":"Assessment of the quality of digital services provided by an e-learning platform focused on sustainability issues","authors":"Beatriz Cruz Delgado, Antonio Carlos Farrapo Júnior, Ricardo Coser Mergulhão, D. A. L. Silva","doi":"10.1590/0103-6513.20210110","DOIUrl":"https://doi.org/10.1590/0103-6513.20210110","url":null,"abstract":"Paper aims: The aim was to adapt and apply a SERVQUAL scale to measure the perceived service quality of an e-learning platform provided by the United Nations for Environment Programme (UNEP) focused on sustainability issues. Originality: There is a scarce number of publications using the SERVQUAL for digital services evaluation. This study contributes to filling this gap, generating new insights for the service quality literature by proposing an adaptation of the SERVQUAL scale for online sustainability courses. Research method: The SERVQUAL was carried out with undergraduate and post-graduate students enrolled at a Brazilian higher education institution. A set of 21 questions was set up to evaluate the perceived service quality of the students before/after finishing the online course “Introduction to Life Cycle Thinking (LCT)” provided by UNEP. Main findings: The results showed that the most important features were related to the empathy, assurance and tangibility quality dimensions with emphasis on the high quality of addressing the user doubts and the audio and video resources that helped students in the learning process. In conclusion, the perceived quality was higher than the expectations for many of the SERVQUAL dimensions. Implications for theory and practice: Finally, the step-by-step methodological approach used by this paper should be adopted by other e-learning platforms to investigate quality and service management aspects. Empathy, assurance and tangibility may be seen as key components in the service quality management of e-learning platforms.","PeriodicalId":34960,"journal":{"name":"Production","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67577344","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 systematized approach for reduction of medical appointment waiting list","authors":"Bruno S. Gonçalves, E.M.A. Vieira, R. M. Lima, J. Dinis-Carvalho","doi":"10.1590/0103-6513.20210137","DOIUrl":"https://doi.org/10.1590/0103-6513.20210137","url":null,"abstract":"Paper aims: This work aims to develop a systematized approach for the reduction of medical appointment waiting lists, proposing an optimization decision-making model followed by continuous people engagement towards a systematic approach for waiting list problem-solving. Originality: There are several studies related to waiting lists in healthcare contexts, however, the present study presents an innovative approach for waiting list problem-solving by proposing prescriptive decision-making models followed by continuous improvement and people engagement. Research method: A research approach with the following phases was developed: system analysis, problem quantification, and development of an optimization model. After these phases, the model was applied, and the results were analysed, as contributions to a systematized model. Main findings: The model was applied to the screening waiting list for orthopaedics appointments followed by the fundamental involvement of medical doctors, which made it possible to implement the optimal solution generated by the model, resulting in a reduction of 90% by 56 days in waiting time for the screening process. Implications for theory and practice: This model contributes for theory and for practice as a way to deal with different scenarios for waiting list reduction in the upcoming days during and after the pandemic.","PeriodicalId":34960,"journal":{"name":"Production","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67577821","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":"Multi-criteria approach to adjust demand forecast for products: application of analytic hierarchy process","authors":"Lidiane Cristina de Oliveira, B. C. S. Pacheco, Claudio Luis Piratelli","doi":"10.1590/0103-6513.20220006","DOIUrl":"https://doi.org/10.1590/0103-6513.20220006","url":null,"abstract":"Paper aims: Investigate whether the results of time series models can be adjusted with the AHP method towards a more assertive forecast. Originality: Considering demand forecasting as a complex decision-making situation, this research investigated the use of the AHP as a complement to traditional forecasting methods. Research method: This applied research employed, as main procedures, literature review and mathematical modeling. Main findings: Two models were proposed that presented satisfactory results: model I reduced the forecast error by 16% in January, 25% in February, 37% in March, 3% in April, and 7% in May; model II reduced it by 17% in January, 21% in February, 29% in March, 2% in April, and 5% in May. Implications for theory and practice: We conclude that the AHP has the potential to correct the results of time series in the textile industry by allowing the incorporation of quantitative and qualitative variables.","PeriodicalId":34960,"journal":{"name":"Production","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67578089","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":"Analysis of new approaches used in portfolio optimization: a systematic literature review","authors":"D. A. Milhomem, Maria José Pereira Dantas","doi":"10.1590/0103-6513.20190144","DOIUrl":"https://doi.org/10.1590/0103-6513.20190144","url":null,"abstract":"","PeriodicalId":34960,"journal":{"name":"Production","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46037493","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 comparative study of forecasting methods using real-life econometric series data","authors":"C. E. Matta, Natália Maria Puggina Bianchesi, Milena Silva de Oliveira, P. Balestrassi, F. Leal","doi":"10.1590/0103-6513.20210043","DOIUrl":"https://doi.org/10.1590/0103-6513.20210043","url":null,"abstract":"","PeriodicalId":34960,"journal":{"name":"Production","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44041416","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 metaheuristic to support the distribution of COVID-19 vaccines","authors":"Augusto José da Silva Rodrigues, Gabriel Lopes Lima","doi":"10.1590/0103-6513.20210031","DOIUrl":"https://doi.org/10.1590/0103-6513.20210031","url":null,"abstract":"Paper aims: The aim is to develop a vaccine distribution routing model (VDRM) in order to support governments to mitigate the pandemic caused by COVID-19. Originality: As far as we know, no metaheuristics has been developed for vaccine distribution, and specifically, to support the Brazilian government. Research method: A metaheuristic is developed based on the combination and adaptation of GRASP (Greedy Randomized Adaptive Search Procedure) with VND (Variable Neighborhood Descent), considering different refinement operators. Finally, as a way of validating the model, a numerical application in the state of Pernambuco (Brazil) was performed. Main findings: Metaheuristic proved to be effective for developing adequate planning for the allocation of ampoules with vaccines to combat COVID-19. Effective analysis was obtained in the evaluation of the proposed algorithm, both in terms of computational effort and the quality of the final solution. An efficiency of approximately 75% was obtained in relation to the current distribution procedure adopted by the state of Pernambuco. Implications for theory and practice: To mitigate disease, adequate logistics for transporting and distributing vaccines is essential, especially in emergency situations to face pandemic crises. Thus, the developed metaheuristic can support governments and companies in any situation demanded, making the decision of how the distribution of the ampoules will be more agile. © 2021. All Rights Reserved.","PeriodicalId":34960,"journal":{"name":"Production","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42377967","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":"Analysis of activities that generate logistical costs in an operation in Brazil to import a containerized cargo: a case study","authors":"Leonardo Melo Delfim, P. D. Silva, Jonas Figuerêdo Silva, M. S. A. Leite","doi":"10.1590/0103-6513.20210027","DOIUrl":"https://doi.org/10.1590/0103-6513.20210027","url":null,"abstract":"Abstract Paper aims This article aims to analyze the activities that generate logistics costs in the process of importing a containerized cargo transported through a port terminal. Originality The scientific literature states that logistical costs are one of the main factors to be mitigated to improve the country's position in the global competitive scenario. The applied methodology offers a conceptual contribution to the area of supply chain, logistics and costs. Research method In this regard, it was necessary to map the process of importing the granite prime cargo, identify the agents involved in the process, survey the activities, and segregate which activities generate logistical costs. Data collection was carried out through the application of semi-structured interviews. Towards the end of each interview and observation, a compilation and data crossing along with the documentary analysis were performed. Then, the logistical costs were segregated by the following types: Supply, Plant, and Distribution. Main findings The article proves to be especially important due to the complex nature of the import process in the country, which involves many independent agents who need to communicate to lead the process. Through the information collected in the interviews with employees involved in the process of importing cargo and document analysis, it was possible to map the process, adding it with the systematic review of the literature realized on activities classified as generating logistical costs, it was possible to segregate them. Implications for theory and practice In this context, so it was possible to carry out the analysis of activities generating logistical costs. Properly mapping and analyzing the logistical cost-generating activities involved serves as a basis for decision-making by the agents involved in the various points of the cargo import process, since dealing directly with port terminals and agents responsible for import operations, it is possible to understand the causes of port inefficiency at the operational level.","PeriodicalId":34960,"journal":{"name":"Production","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46760291","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":"Development of performance indicators for Occupational Health and Safety: a constructivist multicriteria approach for PPE","authors":"C. E. M. Riascos, S. Ensslin, E. Merino","doi":"10.1590/0103-6513.20200106","DOIUrl":"https://doi.org/10.1590/0103-6513.20200106","url":null,"abstract":"Abstract Paper aims This study aims to develop indicators, using the Multi-Criteria Decision Aid - Constructivist methodology (MCDA-C), to assess the occupational prevention activities in a psychiatric hospital. Originality The application to the health sector of MCDA-C, in a case study during the supply of medicines to patients. Research method We use the ProKnow-C. Then, MCDA-C was applied in a case study. Main findings Four interest areas were defined, then the critical situations were identified to construct 126 specific indicators and finally the intervention strategies were defined. 26 indicators focused on PPE, 4 lagging and 22 leading. The model enabled the mapping of performance indicator levels. For that, 48 recommendations, and intervention strategies for each situation were defined. Implications for theory and practice The use of specific indicators, obtained through a participatory process, allowed the identification of accurate and reliable metrics to measure the actual performance of activities, critical situations, and strategies.","PeriodicalId":34960,"journal":{"name":"Production","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48492606","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":"Multicriteria evaluation of biomass residues in Portugal to second generation bioethanol production","authors":"Afonso V. P. Fontes, I. M. João, J. M. Silva","doi":"10.1590/0103-6513.20210060","DOIUrl":"https://doi.org/10.1590/0103-6513.20210060","url":null,"abstract":"Abstract Paper aims This study evaluates agricultural and forest residues in Portugal to select the best candidates to use in second generation bioethanol (2G bioethanol) production. Originality The growth in the significance and level of decisions in biomass resources to 2G bioethanol and the involved complexity clearly encourage a research strategy to identify and select the wastes according to a multiplicity of criteria. Research method To address the key research objective this research used a multicriteria decision analysis method, MACBETH, to structuring the values of concern and identifying the key criteria, to evaluating the main agricultural and forest waste with respect to each criterion, to weighting the criteria and analyzing the biomass residues overall attractiveness and exploring the model´s results. Main findings As main findings of the study we found that Eucalyptus waste is the most promising forest residue to produce lignocellulosic bioethanol followed by Paulownia Tomentosa waste. The utilization of forest residues to the production of bioethanol in Portugal may represent in the future an important economic activity with huge environmental benefits. Implications for theory and practice The multicriteria approach addressed the research objectives and is simple to use with great potential for circular economy strategy issues. The step-by-step explanation of the model building makes the approach highly acceptable to other practitioners.","PeriodicalId":34960,"journal":{"name":"Production","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43225356","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":"Food aid supply and distribution in insecure regions: world food programme operation analysis in Ethiopia","authors":"A. Leiras, Paulo Gonçalves, Bervery Chawaguta, Irineu de Brito Junior, H. Yoshizaki","doi":"10.1590/0103-6513.20210070","DOIUrl":"https://doi.org/10.1590/0103-6513.20210070","url":null,"abstract":"Abstract Paper aims This paper analyzes the food aid supply and distribution for famine relief by the World Food Programme (WFP) in Ethiopia. Food insecurity has increasingly affected people around the world. Furthermore, the characteristics of the provision of humanitarian aid in insecure regions pose several additional challenges over traditional distribution planning (e.g., corruption, losses in last-mile distribution, security escorts). Originality Most previous studies addressing famine relief are qualitative, with only a handful including mathematical modeling as this work. Furthermore, we validate our mathematical model with data from a real problem setting. Research method We propose a stochastic transshipment network flow model to ensure the efficient allocation of limited resources. Main findings The results show high potential for cost savings and offer managerial insights to humanitarian logisticians on the food aid supply and distribution. Our findings indicate that policies in humanitarian logistics should focus on: (a) relaxing legislation for customs clearance of humanitarian supplies; (b) strengthening local market to increase local procurement; (c) implementing tools to enhance security; and (d) monitoring distribution to mitigate the impact of corruption. Implications for theory and practice The results suggest that optimizing food aid distribution in Ethiopia can save millions of people vulnerable to malnutrition.","PeriodicalId":34960,"journal":{"name":"Production","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43144451","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}