Purpose The management of materials consists of an important analysis for industries as there are factors in several areas that should be considered. For this, it should take into account logistical factors, quality and production, because one piece delivered in a large lead time or outside the technical quality standards, imply delays in the project or rework. In this context, the importance of creating a control method of input and output of tools in an aviation industry in the city of Toulouse, France, was seen due to the amount of many incomplete arrivals or inappropriate material for use. The paper aims to discuss this issue. Design/methodology/approach This study used a philosophy of lean manufacturing tools and visual management (VM). A VM panel with information documents of all tools used in an assembly station of a model airplane was applied. With all data collected to carry out the project, the panel was created with the most relevant information of each tool and applied to an assembly station. That done, the production supervisors, mechanical and electrical supervisors were trained in the operation. Despite a change of management, it was realized that all supported the change due to the ease of understanding of the method and a good VM. Findings At the end of the work, materials management became more simplified, operators were more satisfied because of the non-occurrence of tools mistakes and the control time decreased from 120 to 15 minutes. Research limitations/implications The application of this project has begun in an assembly station; however, it has been validated to be applied throughout the facility and its applications are being studied for other industries with different models. Practical implications This project developed a visual panel for support visual communication of the airplane assembly line. Its usage eliminates tools lost, inefficiencies and decreases lost time with tools selection. Originality/value This work proposes a way to simplify the management tools for assembly station plane using a VM panel based on the lean philosophy. The study was conducted at the Final Assembly Line of an aircraft model from a unit of an aircraft company.

The newsvendor problem captures the trade-off between ordering decisions, stocking costs and customer service level when the demand distribution is known. Nonetheless, in real case scenarios, it is unlikely that the decision maker knows the true demand distribution and its parameters, encouraging the use of datasets for empirical solutions that will achieve more precise results and reduce misleading decisions. Motivated by the availability of large amount of quality datasets, advances in machine learning algorithms and enhancement of computational power, the development of data-driven approaches has been emerging over the recent years. However, it is still unclear in which settings these data-driven solutions outperform the traditional model-based methods. In this paper, a systematic literature review is conducted for the descriptive analysis and classification of the most relevant studies that addressed the newsvendor problem and its variations under the data-driven approaches. The methods developed to solve the problems with unknown demand distribution are categorized and assessed. For each category, our paper discusses the relevant publications in detail and how they evidence the data-driven performance better. By identifying the gaps in the available literature, the future research directions are suggested.

Para avaliar o efeito de extratos de plantas sobre o crescimento de Colletotrichum gloeosporioides, extratos etanólicos de sementes de pitomba, folhas de tanchagem, boldo e espada-de-são-jorge, foram obtidos e incorporados em meio contendo batata-dextrose-agar (BDA) nas concentrações de 1%, 5% e 10% (v/v). O crescimento micelial do fungo foi avaliado nesse meio. Os resultados demonstraram o efeito inibitório dos extratos de pitomba e tanchagem aumentam consideravelmente em concentrações maiores que 5% (v/v), levando a uma inibição quase total do fungo (90% e 100%, respectivamente). Em contraste, os extratos de boldo e espada-de-são-jorge, apresentaram baixo potencial inibitório mesmo na concentração de 10% (v/v) causando a redução de apenas 8% e 23%, respectivamente, no crescimento fúngico.A atividade fungitóxica detectada nos extratos testados nesse trabalho evidencia o potencial uso dos mesmos como biopreservadores de frutos de mamão, prevenindo a contaminação e a consequente perda dos frutos no período pós-colheita.