ResumoA logística reversa tem crescido em importância na cadeia de abastecimento. Como contribuição científica inovadora, apresenta-se, a partir de uma revisão bibliográfica do processo de gestão da cadeia logística reversa, um procedimento estruturado para gestão da cadeia logística reversa de bens de pós venda. Adicionalmente é feita uma comparação com as estruturas das cadeias logísticas diretas, verificando-se a similaridade em termos de operações de transportes, gestão de estoque e gestão da informação, o que permite sua aplicação no estudo de caso. Este trabalho tem como objetivo sugerir um procedimento para estruturar a cadeia de logística reversa, que é baseado em Gestão de Processos e considera três níveis básicos: Gestão de entrada do produto, Gestão de Recursos e Gestão do Desempenho na Cadeia Logística Reversa. Uma revisão bibliográfica e documental foi realizada, além de uma pesquisa de campo com um grupo de três lojas de departamento. Os dados coletados dessas empresas através de questionários e entrevistas mostram que a aplicação do procedimento sugere que uma melhor estruturação da gestão em logística reversa de pós-venda no mercado de varejo pode melhorar os resultados financeiros nas empresas, contribuindo para reduzir os retornos de produtos e, conseqüentemente, seus custos , melhorar a eficiência no estoque e gerenciamento de armazenamento, melhorar o uso de recursos, aumentar a receita e promover benefícios sociais, como por exemplo a doação dos produtos que foram usados e foram devolvidos para a caridade. Post-sale reverse logistics has grown in importance in the supply chain. As a contribution to scientific innovation, we present a structured procedure for reverse supply chain management of goods after sale. In addition, a comparison is made between the structures of direct supply chains by checking the similarity in terms of transport operations, inventory management and information management, which allows its application in the case study. This paper aims to suggest a procedure to structure the reverse logistics chain which is based on Process Management and consider three basic levels: Product Entry Management, Resource Management and Performance Management in the Reverse Logistics Chain. A bibliographical and documentary review was conducted in addition to a field research with a group of three department stores. The data collected from the companies using questionnaires and interview shows that the application of the procedure suggests that a better structuring of management in post-sales reverse logistics in the retail market can improve financial results in companies by contributing to reduce product returns and consequently its costs, improve efficiency in inventory and storage management, improve assets usage, increase revenue and promote social benefits such as donation of the products which was used and had been returned for charity.

The inefficiency of Brazil’s logistics system to handle the outflow of farm products impairs the sector’s performance. From the economic perspective, the high freight rates put the country’s agricultural sector at a competitive disadvantage in the global market. Besides this, the reliance on highway transport causes problems of an environmental (high CO 2 emissions) and social nature (large occurrence of accidents). As an alternative to this dependence, Brazil has an extensive network of actually and potentially navigable rivers that could serve as a key element to improve the performance of the agricultural sector. Therefore, the objective of this study is to analyze the possible influence of the Tapajós-Teles Pires Waterway on the sustainable performance of 19 Brazilian soybean export routes, using data envelopment analysis (DEA). Of these, only three would use the Tapajós-Teles Pires Waterway, which is not yet in operation. The origins of the routes are four soybean-producing centers located in Mato Grosso, the Brazilian state that produces the most soybeans, destined for 12 seaports. The inputs considered are Accident Cost and CO2 Emissions, while the output is Cargo Carried per US$. For this, we use the DEA-VRS (Variable Return Scale) input-oriented model. The results obtained from the DEA model revealed satisfactory performance of the routes using the Tapajós-Teles Pires Waterway from three of the four production centers. In Campo Novo do Parecis, some 16% (471 km) of the route is composed of highways and the rest of the waterway (84%, 1576 km). In Sorriso, only 3% (85 km) of the route consists of highways, while waterway transport is responsible for 97% (2388 km), and in Querência, 24.55% of the route to the Port of Barcarena consists of highways. The use of these routes and the combination of the two transport modes presented the best efficiency indexes, making development of the waterway a key element to improve the outflow of soybeans for export. The results of this study may help Brazilian authorities to define public policies and apply resources to improve the deficiencies of the transportation system, which can lead to a better balance of the Brazilian transportation matrix.

Revisão sistemática de estudos de viabilidade em transporte: uma contribuição para o transporte hidroviário Este artigo tem como objetivo identificar os estudos de viabilidade em sistemas de transportes através de um procedimento metodológico. Esse procedimento tem como recurso a exaustão na busca dos estudos analisados, a seleção justificada dos estudos e a avaliação da qualidade metodológica. Foi realizada uma revisão bibliográfica, gerando a inclusão de 47 artigos, porém, foram destacados 18 artigos por apresentarem aplicação em estudos de caso. Com a revisão sistemática foi possível identificar e discutir as contribuições das variáveis e dos Métodos/Ferramentas aplicados em estudos de viabilidade em diferentes modos de transportes, com aplicação em sistema de transporte hidroviário. Essas variáveis e ferramentas estão sendo adotadas a fim de propor um detalhamento estruturado para aplicar em futuros estudos de casos, considerando aspectos econômicos, financeiros, operacionais, técnicos, ambientais e sociais. Palavras-chave: Viabilidade. Modos de transporte. Modo de transporte hidroviário. Infraestrutura. Análise de investimento. This article aims to identify the feasibility studies for transport systems using the systematic review. This review has as a resource the exhaustion in the pursuit of studies reviewed, justified selection of the studies and the assessment of the methodological quality. A literature review was conducted, resulting in the inclusion of 47 articles; however, 18 articles were highlighted by submitting application in case studies. The systematic review was used in order to identify and discuss the contributions of the variables and methods/tools applied in feasibility studies on different modes of transport and that could contribute to a waterway transport system. These variables and tools are being adopted in order to propose a structured detailing to apply in future case studies, where environmental, social, economic, financials, and operational and technical aspects are considered.

Road transport is the principal means of transporting freight and passengers in most developing countries, but several factors, both alone and in conjunction, contribute to increased inefficiency, risk and instability in the sector. The main factors are related to the high number of accidents, structural precariousness, fleet obsolescence, low-skilled drivers and high rates of greenhouse gas emissions. This paper evaluates the influence of implementing a training and feedback procedure associated with event data recorder (EDR) systems for the promotion of better behavior among professional drivers based on safety, operation and economy criteria. The analyses are based on interventions that were carried out during four monitoring phases using data generated by vehicles collected over 13 months of research. The data were converted into indicators and evaluated individually against the criteria and through data envelopment analysis (DEA). The analyses led to the conclusions that the use of EDR systems had positive impacts on all three of the criteria under analysis, and that safety levels can be increased without having to reduce productivity or increase fuel consumption. However, the safety criterion was more sensitive to the association between the technology and training process applied, leading to significant reductions in the indicators analyzed. The study contributes to the association between the methods of analysis and the adoption of specific indicators derived from time variables, leading to the conclusion that the use of EDR systems associated with management training and monitoring procedures can improve economic and operational results in road freight transport (RFT). Furthermore, using the trip data as a structural basis for the training and feedback proved to be very promising for the reduction of unsafe behavior to avoid road accidents.