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Complexity measurement in two supply chains with different competitive priorities

IFAC-PapersOnLine 2019年第13期52卷 1699-1704页

作者： Sellitto, Miguel A. Lolli, Francesco Rimini, Bianca Balugani, Elia Production and Systems Engineering Graduate Program Universidade do Vale do Rio dos Sinos São LeopoldoRS 93022750 Brazil Department of Sciences and Methods for Engineering University of Modena and Reggio Emilia Via Amendola 2 Padiglione Morselli Reggio Emilia42122 Italy

Complexity measurement based on the Shannon information entropy is widely used to evaluate variety and uncertainty in supply chains. However, how to use a complexity measurement to support control actions is still an open issue. This article presents a method to calculate the relative complexity, i.e., the relationship between the current and the maximum possible complexity in a Supply Chain. The method relies on unexpected information requirements to mitigate uncertainty. The article studies two real-world Supply Chains of the footwear industry, one competing by cost and quality, the other by flexibility, dependability, and innovation. The second is twice as complex as the first, showing that competitive priorities influence the complexity of the system and that lower complexity does not ensure competitivity. © 2019, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.

关键词： Uncertainty analysis Adaptive systems Reliability Shoe manufacture Supply chains Complex adaptive systems Complexity Dependability Flexibility Footwear industry Uncertainty Variety

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A Fuzzy Logic Control application to the Cement Industry

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IFAC-PapersOnLine 2018年第11期51卷 1542-1547页

作者： Sellitto, Miguel A. Balugani, Elia Gamberini, Rita Rimini, Bianca Production and Systems Engineering Graduate Program Universidade do Vale do Rio dos Sinos São LeopoldoRS93022750 Brazil Department of Sciences and Methods for Engineering University of Modena and Reggio Emilia Via Amendola 2 Padiglione Morselli Reggio Emilia42122 Italy

A case study on continuous process control based on fuzzy logic and supported by expert knowledge is proposed. The aim is to control the coal-grinding operations in a cement manufacturing plant. Fuzzy logic is based on linguistic variables that emulate human judgment and can solve complex modeling problems subject to uncertainty or incomplete information. Fuzzy controllers can handle control problems when an accurate model of the process is unavailable, ill-defined, or subject to excessive parameter variations. The system implementation resulted in productivity gains and energy consumption reductions of 3% and 5% respectively, in line with the literature related to similar applications. © 2018

关键词： Process control

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L2 Input-to-State Stability and Stabilization of Coupled Linear ODE-Hyperbolic PDE systems∗ 63

L2 Input-to-State Stability and Stabilization of Coupled Lin...

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63rd IEEE Conference on Decision and Control, CDC 2024

作者： Coutinho, Daniel Andrade, Gustavo Artur De Carvalho, Franthiescolly Vieira De Federal University of Santa Catarina Department of Automation and Systems Engineering Florianópolis88040-370 Brazil Federal University of Santa Catarina Post-graduate Program in Automation and Systems Engineering Florianópolis88040-370 Brazil

ISBN: (纸本)9798350316339

This paper addresses the problem of input-to-state stability (ISS) and stabilization of linear ordinary differential equations (ODEs) coupled with a system of homogeneous linear hyperbolic partial differential equations (PDEs) through the boundaries. First, a Lyapunov result characterizing the ISS property for finite-dimensional systems is extended to deal with coupled ODE and PDE systems. The proposed ISS condition is then applied to derive stability and stabilization conditions in terms of linear matrix inequality constraints assuming magnitude bounded disturbances at the boundaries. Two convex optimization problems are also proposed in order to obtain either an optimized reachable set estimate or a boundary controller that minimizes the disturbance effects on the L2 × R-norm of the system states. Numerical examples illustrate the potential of the proposed approach. © 2024 IEEE.

关键词： Convex optimization

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Losses and production efficiency: An interpretation for critical health care services

Losses and production efficiency: An interpretation for crit...

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IIE Annual Conference and Expo 2015

作者： Vaccaro, G.L.R. Azevedo, D. Vargas, D.F. Souza, T.A. Schlusen, M. Avila, L. Kreutz, B. Graduate Program in Production Engineering and Systems Graduate Program in Business and Management Unisinos University 950 Unisinos Av. São Leopoldo RS93.022-000 Brazil Business School Unisinos University 950 Unisinos Av. São Leopoldo RS93.022-000 Brazil Graduate Program in Production Engineering and Systems Unisinos University 950 Unisinos Av. São Leopoldo RS93.022-000 Brazil Undergraduate Program in Production Engineering Unisinos University 950 Unisinos Av. São Leopoldo RS93.022-000 Brazil

ISBN: (纸本)9780983762447

Increasing costs and excess demand are typical characteristics of health services, especially those related to social assistance in developing countries. This context leads to the discussion of alternatives addressing loss mitigation and increments on production efficiency, concepts akin to the field of Operations Management. Lean health care addresses such concepts focusing on the improvement of health care efficiency, especially in critical services, such as E.R. and surgery room services. Nevertheless, the typology of losses, which drives the notion of efficiency improvement, still lacks better analysis and translation to this context. Based on a literature review of 63 indexed journal articles, published between 2006 and 2014, and on field observations of critical processes in Brazilian health care organizations, this study aims to identify the limiting elements of efficiency on such services and discuss the typology of losses under the perspective of hospital environments.

关键词： production efficiency

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Microscopic Simulation Analysis of Mainstream Traffic Flow Control with Variable Speed Limits

Microscopic Simulation Analysis of Mainstream Traffic Flow C...

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International IEEE Conference on Intelligent Transportation systems

作者： Eduardo R. Muller Rodrigo C. Carlson Werner Kraus Markos Papageorgiou Post-graduate Program in Automation and Systems Engineering Federal University of Santa Catarina Department of Production Engineering and Managament Technical University of Crete

ISBN: (纸本)9781479929153

Mainstream Traffic Flow Control (MTFC) with Variable Speed Limits (VSL) is a freeway traffic control method which aims to maximize throughput by regulating the mainstream flow upstream from a bottleneck. Recent studies in a macroscopic simulator have shown optimal and feedback MTFC potential to improve traffic conditions. In this paper, local feedback MTFC is applied in microscopic simulation for an on-ramp merge bottleneck. Traffic behavior reveals important aspects that had not been previously captured in macroscopic simulation. Mainly, the more realistic VSL application at specific points instead of along an entire freeway section produces a slower traffic response to speed limit changes. In addition, the nonlinear speed limit-flow relation observed in the microscopic model is more pronounced than what was observed at the macroscopic level. After appropriate modifications in the control law significant improvements in traffic conditions were obtained.

关键词： Vehicles Acceleration Microscopy Traffic control Delays Detectors Modeling

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THE INTEGRITY OF THE PROCESS APPROACH APPLICATION BY THE P3TECH TECHNOLOGY USAGE

THE INTEGRITY OF THE PROCESS APPROACH APPLICATION BY THE P3T...

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The Eighth World Conference on Integrated Design & Process Technology

作者： W.S.Bonfim E.P.De Lima S.E.G.Da Costa Production and Systems Engineering Graduate Program Pontifical Catholic University of Parana Curitiba Brazil Production and Systems Engineering Graduate Program Pontifical Catholic University of Parana Curitiba Brazil Production and Systems Engineering Graduate Program Pontifical Catholic University of Parana Curitiba Brazil

The Process Approach is a method to solving problems in Operations Strategy Management (OMS).This method drives the conception and development of an operationalization process of conceptualframeworks,

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An overview of enterprise interoperability assessment 22

An overview of enterprise interoperability assessment

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22nd International Conference on production Research, ICPR 2013

作者： Cestari, J.M.A.P. Santos, E.A.P. Loures, E.F.R. Industrial and Systems Engineering Post Graduate Program Pontifical Catholic University of Paraná R. Imaculada Conceição 1155 Curitiba PRCEP: 80.215-901 Brazil

The need for collaboration across companies and across areas in the same company is a reality that systems, people and other stakeholders must deal with it. When there is sharing of information, communication among entities, interaction and integration, progress occurs and, all these components working together can improve enterprise performance. As the need of these 'inter operations' is real, the interoperability is becoming a key factor for companies facing with collaborative-cooperative environments. Enterprise Interoperability Assessment (EIA) provides a company the opportunity to know their strengths, weaknesses and prioritize actions to improve its performance and maturity. This paper presents concepts regarding Enterprise Interoperability focusing in EIA, including some existing models and establishing relationship with CMMI, a reference adopted worldwide, in order to identify common perspectives.

关键词： Interoperability

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Use of cultural particle swarm optimization for Loney's Solenoids design

Use of cultural particle swarm optimization for Loney's Sole...

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12th Biennial IEEE Conference on Electromagnetic Field Computation, CEFC 2006

作者： Coelho, Leandro Dos Santos Mariani, Viviana Cocco Pontifical Catholic University of Paraná Production and Systems Engineering Graduate Program Automation and Systems Laboratory PUCPR/PPGEPS/LAS Imaculada Conceicao 1155 80215-901 Curitiba Brazil Pontifical Catholic University of Paraná Mechanical Engineering Graduate Program PUCPR/PPGEM Imaculada Conceiçao 1155 80215-901 Curitiba Brazil

ISBN: (纸本)1424403200

This work presents the use of particle swarm optimization (PSO) techniques with the particles' population space based on normative knowledge of cultural algorithms (CA). In this work, the optimal shape design of Loney's solenoids benchmark problem is carried out by PSO, PSO-CA, Gaussian PSO and Gaussian PSO-CA approaches. ©2006 IEEE.

关键词： Solenoids

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Reviewing Photovoltaics and Electric Vehicles: Synergy and End of Life Management 26th

Reviewing Photovoltaics and Electric Vehicles: Synergy and E...

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26th International Joint Conference on Industrial engineering and Operations Management, IJCIEOM 2021

作者： Marcuzzo, Rafael Campos, Lucila M. S. Maldonado, Mauricio Uriona Vaz, Caroline Rodrigues Graduate Program in Production Engineering Universidade Federal de Santa Catarina Florianópolis Brazil Department of Production Engineering and Systems Universidade Federal de Santa Catarina Florianópolis Brazil Department of Textile Engineering Universidade Federal de Santa Catarina Blumenau Brazil

ISBN: (纸本)9783030785697

Energy supply and mobility are necessary functions of economic development and have become global latent themes concerning sustainability. In the electricity sector renewable energy technologies, such as solar photovoltaic (PV), have grown significantly over its competitors in terms of investment in the past 20 years. Still, adoption of the technology has not grown quickly enough to decarbonize the sector. In the mobility sector, however, combustion engines have been replaced with electric vehicles (EV), illustrating a greater potential to mitigate emission of polluting gases. Still, the production of EV technology can yield high emissions. Instead of either technology working separately, both PV and EV may be able to cooperate in a manner where PV systems power clean electricity to produce and charge EV batteries until they return to a stationary storing system (i.e., second life) for PV systems. The following study investigates the use of EV batteries for PV systems, assessing the possible toxic effects on the environment from manufacturing, using, and disposing the technology. A review of peer-reviewed articles shed light on possible hazards of clean technologies in the energy and mobility sectors. Findings suggest the diffusion of clean technologies must be accompanied by policies that guarantee responsible disposal of them. The study concludes that advanced technological mechanisms for renewable energy may have significantly negative and sometimes obscured environmental impacts, which must be considered in future policies advocating for those technologies. © 2021, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Environmental technology

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An efficient particle swarm optimization approach based on cultural algorithm applied to mechanical design

An efficient particle swarm optimization approach based on c...

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2006 IEEE Congress on Evolutionary Computation, CEC 2006

作者： Dos Coelho, Leandro Santos Mariani, Viviana Coceo Pontifical Catholic University of Paraná Production and Systems Eng. Graduate Program Automation and Systems Laboratory Imaculada Conceicao 1155 80215-901 Curitiba Parana Brazil Pontifical Catholic University of Paraná Mechanical Engineering Graduate Program Imaculada Conceicao 1155 80215-901 Curitiba Parana Brazil

ISBN: (纸本)0780394879

Particle swarm optimization (PSO) is a population-based swarm intelligence algorithm driven by the simulation of a social psychological metaphor instead of the survival of the fittest individual. Based on the swarm intelligence theory, this paper discusses the use of PSO approaches using an operator and based on the Gaussian probability distribution function as a population space of a cultural algorithm, called cultural Gaussian PSO (GPSO-CA). Cultural algorithms are mechanisms that incorporate domain knowledge obtained during the evolutionary process, which increase the efficiency of the search process. These approaches are employed in a well-studied continuous optimization problem of mechanical engineering design. © 2006 IEEE.

关键词： Global optimization

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