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International Joint Conference on Neural Networks (IJCNN)

作者： L. dos Santos Coelho R.A. Krohling Production and Systems Engineering Graduate Program Automation and Systems Laboratory PPGEPS/CCET/PUCPR Pontifical Catholic University of Paraná Parana Brazil Chair for Control Systems Engineering RST Faculty of Electrical Engineering and Information Technology University of Dortmund Dortmund Germany

Artificial neural networks, in particular, feedforward multilayer networks and basis function networks, have gradually established themselves as a usual tool in approximating complex nonlinear systems. B-spline networks, a type of basis function neural network, are normally trained by gradient-based methods, which may fall into local minima during the learning phase. In order to overcome the drawbacks encountered by conventional learning methods, particle swarm optimization - a swarm intelligence methodology - can provide a stochastic global search of B-spline networks for nonlinear system identification. In this paper, a modified particle swarm optimization algorithm using Gaussian and Cauchy probability distributions are applied to adjust the control points of B-spline neural networks. Simulation results for the identification of Rossler systems are provided and demonstrate the effectiveness and robustness of the proposed identification scheme.

关键词： Nonlinear systems Spline Neural networks Particle swarm optimization Artificial neural networks Multi-layer neural network Learning systems Stochastic systems Probability distribution Robustness

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Proposal of a Hotspot-based Approach to Identifying Social Impacts along the Product-Service systems Life Cycle in the Early Design Phases

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Procedia CIRP 2017年 64卷 85-90页

作者： Thayla T. Sousa-Zomer Paulo A. Cauchick-Miguel Post-graduate Program in Production Engineering Federal University of Santa Catarina Campus Universitário Trindade Caixa Postal 476 88040-970 Florianópolis SC Brazil Production and System Engineering Department Federal University of Santa Catarina Campus Universitário Trindade Caixa Postal 476 88040-970 Florianópolis SC Brazil

The potential for sustainability has been highlighted as one of the most important characteristics of product-service systems (PSS). Nevertheless, a PSS is not intrinsically sustainable. Methods and tools for PSS sustainability assessment should be developed to be integrated into the design process, especially in the early design phases, in order to conceive sustainable solutions. In addition, a PSS should be planned considering the three sustainability dimensions, from a life cycle perspective. However, PSS design and assessment considering the full life cycle is scarcely addressed in the literature, especially concerning the social dimension of sustainability. In this sense, this study proposes a streamlined life cycle assessment based approach to identify potential social impacts along the PSS life cycle that can be integrated into the early PSS design stages. The proposal is based on a hotspot analysis, which identifies where in the life cycle the most significant issues may occur. The proposal was developed in three main phases, anchored in both hotspots analysis and PSS literature. After developing it, 10 experts in PSS and sustainability assessed the proposal strengths and weakness. Some suggestions were offered by the researchers and improvements were introduced to the proposal regarding PSS life cycle phases and the social impact subcategories. The experts considered the hotspot analysis suitable to be applied in the early design stages when there is not much information yet regarding the system to conduct a complete life cycle assessment. The next step of this research is the proposal assessment by practitioners in industry. Further work will also integrate the environmental dimension of sustainability into the proposal.

关键词： sustainable product-service systems sustainability assessment social impacts early design stages

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Barriers to bicycle sharing systems implementation: analysis of two unsuccessful PSS

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Procedia CIRP 2018年 73卷 191-196页

作者： Suzana R. Moro Aline C. Imhof Diego C. Fettermann Paulo A. Cauchick-Miguel Post-graduate Program in Production Engineering Federal University of Santa Catarina Campus Universitário Trindade Caixa Postal 476 88040-970 Florianópolis SC Brazil Production and System Engineering Department Federal University of Santa Catarina Campus Universitário Trindade Caixa Postal 476 88040-970 Florianópolis SC Brazil

Bicycle sharing systems (BSS) arise as a proposal to respond to the challenges of urban mobility as a healthy, efficient, and relatively inexpensive mean of transportation. Although these systems are widespread, BSS still present challenges for implementation. In this context, this paper aims to identify the barriers to implementation of this kind of product-service systems (PSS) and to analyze which ones most impacted the failure of two BSS. The main results demonstrate that resistance to change both by users and those involved with the project hinders BSS implementation. Besides involving several actors, the system needs an adequate projection of the demand and costs. Some alternatives are: the integration of stakeholders in the development of the solution and the promotion of policies for the diffusion of sharing systems and education to conscious consumption. The results could be used in future PSS implementations to support overcoming the barriers.

关键词： Product-service system bicycle sharing system bike-sharing implementation barriers

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Supply Chain Optimization Using Chaotic Differential Evolution Method

Supply Chain Optimization Using Chaotic Differential Evoluti...

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IEEE International Conference on systems, Man and Cybernetics

作者： Leandro dos Santos Coelho Heitor Silverio Lopes Production and Systems Engineering Graduate Program Automation and Systems Laboratory Pontifical Catholic University of Paraná Curitiba Parana Brazil UTFPR/CPGEI Federal Technological University of Parana Curitiba Parana Brazil

This paper describes the application of differential evolution approaches to the optimization of a supply chain. Although simplified, this supply chain included stocks, production, transportation and distribution, in an integrated production-inventory-distribution system. The supply chain problem model is presented as well as a short introduction to each evolutionary algorithm. Differential evolution (DE) is an emergent evolutionary algorithm that offers three major advantages: it finds the global minimum regardless of the initial parameter values, it involves fast convergence, and it uses few control parameters. Inspired by the chaos theory, this work presents a new global optimization algorithm based on different DE approaches combined with chaotic sequences (DEC), called chaotic differential evolution algorithm. The performance of three evolutionary algorithm approaches (genetic algorithm, DE and DEC) and branch and bound method were evaluated with numerical simulations. Results were also compared with other similar approach in the literature. DEC was the algorithm that led to better results, outperforming previously published solutions. The simplicity and robustness of evolutionary algorithms in general, and the efficiency of DEC, in particular, suggest their great utility for the supply chain optimization problem, as well as other logistics-related problems.

关键词： Supply chains Optimization methods Chaos Evolutionary computation production systems Transportation Convergence Genetic algorithms Numerical simulation Robustness

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Proposal for an image-based software system for dental implant positioning

Proposal for an image-based software system for dental impla...

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IEEE Symposium on Bioinformatics and Bioengineering (BIBE)

作者： Cesar Luiz Rizzatti Marcelo Rudek Anderson Luis Szejka Osiris Canciglieri Miroslav Trajanovic Pontificia Universidade Catolica do Parana Curitiba PR BR Production Engineering and Systems - PPGEPS Pontifical Catholic University of Parana-PUCPR Curitiba Brazil Pontifical Catholic University of Parana-PUCPR Curitiba Brazil Graduate Program in Production Engineering and Systems - PPGEPS Curitiba Brazil Department for Production University of Nis Faculty of Machanical Engineering Serbia

The technological development in healthcare experienced in actual days has relationship with the integration of many knowledge areas, fundamentally by searching new solutions in order to improve the quality of life of the society. Examples of this reality appears in medicine and engineering areas, where the computer-assisted techniques works together to solve many healthcare problems. In the surgical procedures context as well, as in dental implant planning, the surgeon still determine some parameters according to his personal experience, where only the visualization of the problems through Computed Tomography images are not enough to ensure the success of the procedure. Thus, this research aims to propose a computational model, as a decision support tool, in order to define a more appropriate positioning for dental implants. This is a fundamental part to determination of the necessary parameters for the process planning because the information is obtained automatically straight from image processing. The prototype presented in this work comprises a user-friendly interface, which allows dentists to observe the bone and dental structure in multi-perspective images. Also, it determines the implant location by an automatic procedure without intervention of dentist. The text shows a study case with the autonomous determination of an implant position.

关键词： Implants Bones Computed tomography Dentistry Teeth Surgery Image edge detection

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Chaotic Differential Evolution Applied to Electromagnetics Optimization

Chaotic Differential Evolution Applied to Electromagnetics O...

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IEEE Conference on Electromagnetic Field Computation

作者： L. dos Santos Coelho V.C. Mariani Production and Systems Engineering Graduate Program Automation and Systems Laboratory PUCPR/PPGEPS/LAS Pontifical Catholic University of Paraná Curitiba Brazil PUCPR/PPGEM Pontifical Catholic University of Paraná Curitiba Brazil

This work presents a new global optimization algorithm based on differential evolution (DE) method and DE combined with chaotic sequences (DEC) given by logistic map. In this paper, the optimal shape design of Loney's solenoids benchmark problem is carried out by DE and DEC algorithms. The results of DE and DEC approaches are also investigated and their performance compared with those reported in the literature

关键词： Chaos Solenoids Optimization methods Evolutionary computation Stochastic processes Genetic mutations Logistics Algorithm design and analysis Design optimization Electronic mail

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Brazilian consumers' preference towards fruits: The drivers of banana, orange, lemon and apple supply chain 7

Brazilian consumers' preference towards fruits: The drivers ...

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7th International Conference on Information systems, Logistics and Supply Chain, ILS 2018

作者： Machado, Sivanilza Teixeira Dos Reis, João Gilberto Mendes Da Silva, Adriano Maniçoba Bueno, Régis Cortez Tanaka, Wilson Yoshio De Felice Zampini, Eugenio Toloi, Rodrigo Carlo NAPOLE - Advanced Production Operations Logistics and Strategy Center Federal Institute of São Paulo 1501 Mogi das Cruzes Avenue Suzano SP Brazil RESUP - Supply Chain Research Group Post-graduate Program in Production Engineering Paulista University 1212 Dr. Bacelar St. São Paulo SP Brazil iLAB - Image Pattern Recognition Laboratory Federal Institute of São Paulo 1501 Mogi das Cruzes Avenue Suzano SP Singapore

Public health problem is associated to eating habits, such as higher consumption of fast food and popular snakes. Excessive consumption of these foods can cause health problems such as obesity due to its high energy densities. These foods have become commonplace in world culture for their low price and the easy-to-eat foods mass production. It is known that fruits are essential in balanced diets and an important part of the nutrition strategies programs by contribute to a healthy life. Some works has shown a consumer's global trend demand for product and the life quality and between fresh food and healthy. The Brazil are the third in the word in fruit supply chain and one of the biggest problems facing is fruit loss. It is estimated that mean of fruits losses occurs in households. The present study aimed to determine Brazilian preference towards fruit and the Brazilian consumer behavior influence which might contribute to losses during consumption stage. We explored the literature and created a survey with 275 participants, 46% of men and 53% of women, to identify the perception of Brazilian consumers that may contribute to fruit loss. The results shown the consumer preferences in buying mature fruits is associated with habits and can contribute to food losses and waste, because according best practice to fruit preservation is recommended that the majority types of mellow fruits should be stored in refrigerator and some of them should be consume as soon as possible. © ILS 2018 - Information systems, Logistics and Supply Chain, Proceedings. All rights reserved.

关键词： Citrus fruits

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Control and Tracking Techniques for Switched Reluctance Machines 1

Control and Tracking Techniques for Switched Reluctance Mach...

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丛书名： Power systems

1000年

作者： Wesley Pacheco Calixto Wanderson Rainer Hilário Araújo Lucas Diniz Silva Morais Marcio Rodrigues Cunha Reis

ISBN: (数字)9783031867279

ISBN: (纸本)9783031867262;9783031867293

Control and Tracking Techniques for Switched Reluctance Machines provides detailed and practical instructions for implementing drive and control techniques for switched reluctance machines (SRMs), which can be immediately applied in real-world projects. It presents the latest innovations in control techniques for SRMs, which are essential for the efficiency and sustainability of modern electrical systems. The book includes case studies and practical examples that enhance the understanding of concepts and their application in real scenarios, making the content accessible to both students and experienced professionals. It emphasizes techniques that optimize SRM performance and promote the sustainability of electrical systems, a topic of increasing importance in engineering. With a focus on the current and future needs of the energy sector, this authoritative guide is a key reference for practicing engineers, researchers, and practitioners in the renewable energy industry. Presents the latest innovations in control techniques for switched reluctance machines; Emphasizes techniques and innovation with a focus on sustainability; Offers case studies and a practical approach allowing immediate technology applications in real-world projects.

关键词： Power Electronics, Electrical Machines and Networks Energy systems Renewable and Green Energy

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Food losses in the vegetable supply chain: Evidence from brazilian consumer behaviour 7

Food losses in the vegetable supply chain: Evidence from bra...

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7th International Conference on Information systems, Logistics and Supply Chain, ILS 2018

作者： Machado, Sivanilza Teixeira Dos Reis, João Gilberto Mendes Da Silva, Adriano Maniçoba Bueno, Régis Cortez Tanaka, Wilson Yoshio De Felice Zampini, Eugenio NAPOLE - Advanced Production Operations Logistics and Strategy Center Federal Institute of São Paulo 1501 Mogi das Cruzes Avenue Suzano SP Brazil RESUP - Supply Chain Research Group Post-graduate Program in Production Engineering Paulista University 1212 Dr. Bacelar St. São Paulo SP Brazil iLAB - Image Pattern Recognition Laboratory Federal Institute of São Paulo 1501 Mogi das Cruzes Avenue Suzano SP Singapore

Food Losses and wastes can become a major social and economic problem if not managed properly. Over the last decades, some research has focused on the waste and loss of fruits and vegetables due to the population growth, which makes essential to find out ways to reduce these wastes and losses. However, few studies dealt with the amount of fruit and vegetables that are wasted by consumers. The purpose of this study is to identify the main causes that affect the generation of wastes in household's consumer behavior. A structured survey was applied to 275 Brazilian consumers, where 53% were female and 47% male, restricted a region of Brazil to identify these causes. The results show that a high education level does not imply a low food waste. Moreover, it indicates that, despite the low volume waste by family, the sum of these wastes represents a huge volume affecting logistics and supply chain management, waste disposal areas and environmental pollution. © ILS 2018 - Information systems, Logistics and Supply Chain, Proceedings. All rights reserved.

关键词： Vegetables

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Sustainable business models as an innovation strategy in the water sector: An empirical investigation of a sustainable product-service system

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Journal of Cleaner production 2018年第Sup期171卷 S119-S129页

作者： Sousa-Zomer, Thayla T. Cauchick Miguel, Paulo A. Post-graduate Program in Production Engineering Federal University of Santa Catarina Campus Universitário Trindade Caixa Postal 476 FlorianópolisSC88040-970 Brazil Production and System Engineering Department Federal University of Santa Catarina Campus Universitário Trindade Caixa Postal 476 FlorianópolisSC88040-970 Brazil

The complexity of the challenges in the water sector means that innovative solutions are required. These solutions include not only new sustainable technologies for water treatment, but also complementary innovation in business models to support the adoption of these technologies in urban areas. This paper aims to explore the role of sustainable business models in supporting technological innovations such as decentralized approaches for water quality and quantity improvements in urban areas. The private sector involvement can be valuable in overcoming the barriers and challenges to implementation of those approaches as well as to achieve the sustainability. A case study of the product-service system as a sustainable business model in an emerging economy was conducted to deliver insights into the role of new ways of value proposition, value creation, and value capture in supporting innovative technologies in the water sector and in contributing to sustainability. The results demonstrated that consumers' acceptance, risk perception, and confidence in decentralized approaches can be improved with the support of business models through a close integration with customers. The close integration among the actors can also lead to better management of the system. Further research can focus on how different types of sustainable business models could contribute to supporting water technologies in urban areas and increase social acceptability. © 2016 Elsevier Ltd

关键词： Sustainable development

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