62 research outputs found

    Optimization Algorithms for the Inventory Routing Problem

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    At this point there are already three variants of optimization algorithms, oriented at the Inventory Routing Problem, based on the GRASP metaheuristic capable of solving instances of one vehicle and one product with reasonable GAP and multi products one vehicle with more GAP than desired for most of the instances. The algorithms were developed in c++ and are being compared with a benchmark for the Multi-vehicle Multi-product Inventory Routing Problem. Tests are being made to access computational times affinity with solution improvement. The developed work is within the planned schedule able to consult at http://gnomo.fe.up.pt/~ee10089/SIEM

    Energy Technology and Management

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    The civilization of present age is predominantly dependent on energy resources and their utilization. Almost every human activity in today's life needs one or other form of energy. As world's energy resources are not unlimited, it is extremely important to use energy efficiently. Both energy related technological issues and policy and planning paradigms are highly needed to effectively exploit and utilize energy resources. This book covers topics, ranging from technology to policy, relevant to efficient energy utilization. Those academic and practitioners who have background knowledge of energy issues can take benefit from this book

    Comparación de metaheurísticas aplicadas al problema de corte bidimensional tipo guillotina en láminas de acero

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    Muchas industrias del sector de metal, vidrio, madera, papel, entre otras. Que se dedican al corte en dos dimensiones y utilizan una herramienta llamada guillotina, los cuales son estimados como cortes rectangulares tienen un problema común que tiene que ver con el gran número de posibles patrones de cortes que pueden ocurrir al momento de hacer el despiece de material, es decir cuando se desee cortar piezas solicitadas por los clientes en objetos grandes (láminas de acero), y cuyo principal objetivo es minimizar desperdicio de su materia prima. En esta investigación se trata con el caso de que el corte es tipo guillotina, y donde las piezas pueden tener rotación de 90 grados al momento de ser cortadas de la lámina de acero. En esta investigación se presenta una comparación de metaheurísticas que resuelven este problema. Las metaheurísticas utilizadas fueron: Genético, Búsqueda tabú y Optimización del Intercambio Térmico, que mediante un análisis de resultados es escogida la metaheurística que revele mejor resultados (minimización de desperdicio).Pregrad

    Mechatronic Systems

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    Mechatronics, the synergistic blend of mechanics, electronics, and computer science, has evolved over the past twenty five years, leading to a novel stage of engineering design. By integrating the best design practices with the most advanced technologies, mechatronics aims at realizing high-quality products, guaranteeing at the same time a substantial reduction of time and costs of manufacturing. Mechatronic systems are manifold and range from machine components, motion generators, and power producing machines to more complex devices, such as robotic systems and transportation vehicles. With its twenty chapters, which collect contributions from many researchers worldwide, this book provides an excellent survey of recent work in the field of mechatronics with applications in various fields, like robotics, medical and assistive technology, human-machine interaction, unmanned vehicles, manufacturing, and education. We would like to thank all the authors who have invested a great deal of time to write such interesting chapters, which we are sure will be valuable to the readers. Chapters 1 to 6 deal with applications of mechatronics for the development of robotic systems. Medical and assistive technologies and human-machine interaction systems are the topic of chapters 7 to 13.Chapters 14 and 15 concern mechatronic systems for autonomous vehicles. Chapters 16-19 deal with mechatronics in manufacturing contexts. Chapter 20 concludes the book, describing a method for the installation of mechatronics education in schools

    The Encyclopedia of Neutrosophic Researchers, 5th Volume

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    Neutrosophic set, neutrosophic logic, neutrosophic probability, neutrosophic statistics, neutrosophic measure, neutrosophic precalculus, neutrosophic calculus and so on are gaining significant attention in solving many real life problems that involve uncertainty, impreciseness, vagueness, incompleteness, inconsistent, and indeterminacy. In the past years the fields of neutrosophics have been extended and applied in various fields, such as: artificial intelligence, data mining, soft computing, decision making in incomplete / indeterminate / inconsistent information systems, image processing, computational modelling, robotics, medical diagnosis, biomedical engineering, investment problems, economic forecasting, social science, humanistic and practical achievements. There are about 7,000 neutrosophic researchers, within 89 countries around the globe, that have produced about 4,000 publications and tenths of PhD and MSc theses, within more than two decades. This is the fifth volume of the Encyclopedia of Neutrosophic Researchers, edited from materials offered by the authors who responded to the editor’s invitation, with an introduction contains a short history of neutrosophics, together with links to the main papers and books

    Technology and Management for Sustainable Buildings and Infrastructures

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    A total of 30 articles have been published in this special issue, and it consists of 27 research papers, 2 technical notes, and 1 review paper. A total of 104 authors from 9 countries including Korea, Spain, Taiwan, USA, Finland, China, Slovenia, the Netherlands, and Germany participated in writing and submitting very excellent papers that were finally published after the review process had been conducted according to very strict standards. Among the published papers, 13 papers directly addressed words such as sustainable, life cycle assessment (LCA) and CO2, and 17 papers indirectly dealt with energy and CO2 reduction effects. Among the published papers, there are 6 papers dealing with construction technology, but a majority, 24 papers deal with management techniques. The authors of the published papers used various analysis techniques to obtain the suggested solutions for each topic. Listed by key techniques, various techniques such as Analytic Hierarchy Process (AHP), the Taguchi method, machine learning including Artificial Neural Networks (ANNs), Life Cycle Assessment (LCA), regression analysis, Strength–Weakness–Opportunity–Threat (SWOT), system dynamics, simulation and modeling, Building Information Model (BIM) with schedule, and graph and data analysis after experiments and observations are identified
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