Pesquisa Operacional最新文献_第2页

RECOVERING PROBABILITY FUNCTIONS WITH FOURIER SERIES 用傅里叶级数恢复概率函数

Pesquisa Operacional Pub Date : 2023-03-13 DOI: 10.1590/0101-7438.2023.043.00267882

Allan Jonathan da Silva, J. Baczynski, J. Vicente

引用次数: 2

UNIVERSITIES IN SMALL BRAZILIAN CITIES: ANALYSIS OF THE IMPACT OF COVID 19 USING VALUE-FOCUSED THINKING 巴西小城市的大学:用以价值为中心的思维分析covid - 19的影响

Pesquisa Operacional Pub Date : 2023-03-13 DOI: 10.1590/0101-7438.2023.043.00263680

Marianna Cruz Campos Pontarolo, Luciano Azevedo de Souza, Guilherme Regal de Castro, Danny Aronson, N. C. R. Bergiante

{"title":"UNIVERSITIES IN SMALL BRAZILIAN CITIES: ANALYSIS OF THE IMPACT OF COVID 19 USING VALUE-FOCUSED THINKING","authors":"Marianna Cruz Campos Pontarolo, Luciano Azevedo de Souza, Guilherme Regal de Castro, Danny Aronson, N. C. R. Bergiante","doi":"10.1590/0101-7438.2023.043.00263680","DOIUrl":"https://doi.org/10.1590/0101-7438.2023.043.00263680","url":null,"abstract":". This paper aims to support decision-making for the return of classes to determine actions to reduce the problems arising from the pandemic through a multi-methodological approach using Value-focused thinking (VFT) and Rich Picture (RP). The case study includes a Brazilian small university, in a region with social and economic vulnerability. Six stakeholders representing the students, the municipality community and the university were interviewed from which the hierarchy of fundamental objectives and an objectives’ network unfolded in education, health, and community were created. Even though health concerns were shared by all stakeholders, these networks revealed a variety of perspectives not typically discussed in large universities, such as access to information and communication technologies; awareness of biosafety measures; and real estate vacancy. These findings indicate that future research should address the specific needs of small universities in vulnerable cities, particularly those in developing and underdeveloped countries, where universities’ presence fosters the economy.","PeriodicalId":35341,"journal":{"name":"Pesquisa Operacional","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67469831","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}

引用次数: 1

LARGE SCALE SUPPLY CHAIN NETWORK DESIGN: AN EFFECTIVE HEURISTIC APPROACH 大规模供应链网络设计:有效的启发式方法

Pesquisa Operacional Pub Date : 2023-03-13 DOI: 10.1590/0101-7438.2023.043.00269080

Juan Parra Galvez, D. Borenstein

引用次数: 0

MULTIOBJECTIVE EVOLUTIONARY METAHEURISTIC APPROACH TO THE CONSTRAINED PORTFOLIO OPTIMIZATION PROBLEM 约束投资组合优化问题的多目标进化元启发式方法

Pesquisa Operacional Pub Date : 2023-03-13 DOI: 10.1590/0101-7438.2023.043.00266962

Massika Ikhlef, Méziane Aïder

引用次数: 0

HONORING PESQUISA OPERACIONAL REVIEWERS 表彰pesquisa业务评审员

Pesquisa Operacional Pub Date : 2023-03-13 DOI: 10.1590/0101-7438.2023.043.00202301

A. P. Sant’Anna

引用次数: 0

A BIOBJECTIVE MATHEURISTIC FOR THE INTEGRATED SOLUTION OF THE IRREGULAR STRIP PACKING AND THE CUTTING PATH DETERMINATION PROBLEMS 不规则条形包装与切割路径确定问题综合求解的双目标数学

Pesquisa Operacional Pub Date : 2023-01-01 DOI: 10.1590/0101-7438.2023.043.00275212

Larissa Tebaldi Oliveira, Maria Antónia Carravilla, José Fernando Oliveira, Franklina Maria Bragion Toledo

{"title":"A BIOBJECTIVE MATHEURISTIC FOR THE INTEGRATED SOLUTION OF THE IRREGULAR STRIP PACKING AND THE CUTTING PATH DETERMINATION PROBLEMS","authors":"Larissa Tebaldi Oliveira, Maria Antónia Carravilla, José Fernando Oliveira, Franklina Maria Bragion Toledo","doi":"10.1590/0101-7438.2023.043.00275212","DOIUrl":"https://doi.org/10.1590/0101-7438.2023.043.00275212","url":null,"abstract":"Irregular strip packing problems are present in a wide variety of industrial sectors, such as the garment, footwear, furniture and metal industry. The goal is to find a layout in which an object will be cut into small pieces with minimum raw-material waste. Once a layout is obtained, it is necessary to determine the path that the cutting tool has to follow to cut the pieces from the layout. In the latter, the goal is to minimize the cutting distance (or time). Although industries frequently use this solution sequence, the trade-off between the packing and the cutting path problems can significantly impact the production cost and productivity. A layout with minimum raw-material waste, obtained through the packing problem resolution, can imply a longer cutting path compared to another layout with more material waste but a shorter cutting path, obtained through an integrated strategy. Layouts with shorter cutting path are worthy of consideration because they may improve the cutting process productivity. In this paper, both problems are solved together using a biobjective matheuristic based on the Biased Random-Key Genetic Algorithm. Our approach uses this algorithm to select a subset of the no-fit polygons edges to feed the mathematical model, which will compute the layout waste and cutting path length. Solving both strip packing and cutting path problems simultaneously allows the decision-maker to analyze the compromise between the material waste and the cutting path distance. As expected, the computational results showed the trade-off’s relevance between these problems and presented a set of solutions for each instance solved.","PeriodicalId":35341,"journal":{"name":"Pesquisa Operacional","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135658943","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}

引用次数: 0

A FITRADEOFF-BASED APPROACH FOR STRATEGIC DECISIONS ON MILITARY BUDGET 军事预算战略决策的交叉分析方法

Pesquisa Operacional Pub Date : 2023-01-01 DOI: 10.1590/0101-7438.2023.043spe1.00262789

Almir Garnier Santos, L. Pessôa, C. Mota, E. A. Frej

引用次数: 0

SPECIAL ISSUE ON BUILDING MULTICRITERIA DECISION MODELS WITH FITRADEOFF 关于建立具有梯度的多准则决策模型的专刊

Pesquisa Operacional Pub Date : 2023-01-01 DOI: 10.1590/0101-7438.2023.043spe1.00270580

Adiel Teixeira de Almeida, E. A. Frej, A. P. C. S. Costa

引用次数: 0

ASSIGNING PRIORITIES FOR RAW MATERIAL OF A LARGE PET FOOD PRODUCER IN THE CONTEXT OF SUPPLY DISRUPTION 在供应中断的情况下，为大型宠物食品生产商的原材料分配优先级

Pesquisa Operacional Pub Date : 2023-01-01 DOI: 10.1590/0101-7438.2023.043spe1.00263605

Rebeca Correa Lima Costa Carvalho, Lucia Reis Peixoto Roselli, J. Figueira

{"title":"ASSIGNING PRIORITIES FOR RAW MATERIAL OF A LARGE PET FOOD PRODUCER IN THE CONTEXT OF SUPPLY DISRUPTION","authors":"Rebeca Correa Lima Costa Carvalho, Lucia Reis Peixoto Roselli, J. Figueira","doi":"10.1590/0101-7438.2023.043spe1.00263605","DOIUrl":"https://doi.org/10.1590/0101-7438.2023.043spe1.00263605","url":null,"abstract":"The COVID-19 pandemic has affected everyday life in societies around the world. One of the most severe consequences has been the social isolation imposed by this extremely contagious disease. In this context, many people began looking for a pet for the first time. In Brazil, for instance, the pet sector increased its financial returns in 2020. In addition, companies that produce pet foods have experienced problems with the supply of materials. Supply chain disruption is a problem faced by many different organizations during this time of crisis. This study, therefore, investigated the supply of raw materials stored in the silos and tanks of a large company. This company have operations in 80 countries across the world and produces different products, including pet food. Thirteen raw materials used to produce pet food were con-sidered. In addition, eight criteria of the company's supply process were identified and explored. Moreover, the Flexible and Interactive Tradeoff (FITradeoff) method, which is a Multiple Criteria Decision Mak-ing/Aiding (MCDM/A) method, was applied to rank the raw materials based on supply difficulty. In terms of supply criticality, the order of materials was established from less critical to most critical. These results can be used by companies to better plan the receipt of these materials to reduce the risk of supply chain-related disruptions and propose better ways to distribute activities between planners to help them in their daily management. © 2023 Brazilian Operations Research Society.","PeriodicalId":35341,"journal":{"name":"Pesquisa Operacional","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67470894","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}

引用次数: 0

SOME NOVEL FIXED POINT RESULTS FOR (Ω, ∆)-WEAK CONTRACTION CONDITION IN COMPLETE FUZZY METRIC SPACES 完备模糊度量空间中(Ω，∆)-弱收缩条件的不动点结果

Pesquisa Operacional Pub Date : 2023-01-01 DOI: 10.1590/0101-7438.2023.043.00272982

Vishal Gupta, Pooja Dhawan, Jonty Jindal, Manu Verma

引用次数: 0