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This study aims to reduce carbon emissions and costs in an automobile production plant by improving the operational management efficiency of a serial assembly line…
This study aims to reduce carbon emissions and costs in an automobile production plant by improving the operational management efficiency of a serial assembly line assisted by a feeding electric tow vehicle (ETV).
A multi-objective function is formulated to minimize the energy consumption of the ETV from which emissions and costs are measured. First, a mixed-integer linear programming model is used to solve the feeding problem for different sizes of the assembly line. Second, a bi-objective optimization (HBOO) model is used to simultaneously minimize the most eco-efficient objectives: the number of completed runs (tours) by the ETV along the assembly line, and the number of visits (stops) made by the ETV to deliver kits of components to workstations.
The most eco-efficient strategy is always the bi-objective optimal solution regardless of the size of the assembly line, whereas, for single objectives, the optimization strategy differs depending on the size of the assembly line.
Instances of the problem are randomly generated to reproduce real conditions of a particular automotive factory according to a previous case study. The optimization procedure allows managers to assess real scenarios improving the assembly line eco-efficiency. These results promote the implementation of automated control of feeding processes in green manufacturing.
The HBOO-model assesses the assembly line performance with a view to reducing the environmental impact effectively and contributes to reducing the existent gap in the literature. The optimization results define key strategies for manufacturing industries eager to integrate battery-operated motors or to address inefficient traffic of automated transport to curb the carbon footprint.
This introductory chapter evidences the need to push again to the fore research undertaken in Southern European countries, highlighting its Mediterranean features and how…
This introductory chapter evidences the need to push again to the fore research undertaken in Southern European countries, highlighting its Mediterranean features and how they relate to old and new theoretical and political debates. Consequently, in this first chapter we describe the main aim of the book as well as how the subsequent chapters contribute to fulfill this quest outlining the structure of the book.
This concluding chapter presents a transversal reading of some key elements of Mediterranean agriculture and its pathways of transformation, in part under the lens of main…
This concluding chapter presents a transversal reading of some key elements of Mediterranean agriculture and its pathways of transformation, in part under the lens of main theoretical paradigms, where, as the first section discuss, it has had a peripheral character. In this regard, the chapter tackles the impure nature (where allegedly productivist and non-productivist dynamics coalesce) of some agricultural pathways, at both the farm and the territorial levels. As it is discussed later, this relates to the role played by policies and the way Mediterranean decision-makers mediate EU regulations. Subsequently, three interwoven dimensions of the recent evolution of Mediterranean agriculture are analysed: the dynamics of family farming and the role played by family networks, the position of migrants in the evolution of agriculture and some hypothesis and clues about the implications of the current economic crisis for Southern farming systems. In the two last sections, the chapter ends discussing the theoretical and policy challenges posed by Mediterranean small-scale farming systems.
Recent research suggests that multi-component and contextualized interventions are a good option for the treatment of children with ADHD. The primary goal of the present…
Recent research suggests that multi-component and contextualized interventions are a good option for the treatment of children with ADHD. The primary goal of the present investigation was to examine the efficacy of a multi-component psychosocial intervention involving children, with ADHD, their parents and their teachers. Forty-two children with ADHD were distributed in two groups: one with 27 children who received the intervention (experimental group) and the other with 15 children who received no intervention (control group). The effects of the intervention program were evaluated in three basic developmental areas: school learning, emotional adjustment and social adjustment. Once the intervention was over, the learning problems of children with ADHD who participated in the intervention were significantly reduced, based on the observations of both parents and teachers. Furthermore, social adjustment of the treated group improved significantly at the posttest evaluation. In contrast, in the group of children with ADHD who did not receive treatment, the learning and social problems remained stable.
This chapter aims to analyse the evolution of competing paradigms and theoretical frameworks that have pervaded the debates on the present and future of agricultural and…
This chapter aims to analyse the evolution of competing paradigms and theoretical frameworks that have pervaded the debates on the present and future of agricultural and food systems and their associated rural areas. From this global overview, we will extract common features of paradigms that are being reproduced over time as well as highlight the innovations introduced. Particular attention will be paid to discuss the responses and contributions inspired by European Mediterranean-based research, setting up the framework that underlines the subsequent chapters of the volume.