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Going in Circles: Key Aspects for Circular Economy Contributions to Agro-industrial Cooperatives

Circular Economy and Sustainability 2023年第2期3卷 861-880页

作者： Barros, Murillo Vetroni de Jesus, Rômulo Henrique Gomes Ribeiro, Bruno Silva Piekarski, Cassiano Moro Sustainable Production Systems Laboratory (LESP) Graduate Program in Industrial Engineering (PPGEP) Universidade Tecnológica Federal Do Paraná (UTFPR) Paraná Ponta Grossa Brazil Department of Industrial Engineering Universidade Estadual do Paraná (UNESPAR) Paraná Paranaguá Brazil Sustainable Production Systems Laboratory (LESP) Universidade Tecnológica Federal Do Paraná (UTFPR) Paraná Ponta Grossa Brazil

The global agribusiness context faces at the same time challenges of feeding a growing global population that is used to safe and nutritious food, opportunities based on innovation, high technology and efficiency in the agri-food production systems from field to table. Given the context, this article aims to present the main key aspects of the circular economy to agro-industrial cooperatives. These contributions were named key aspects, such as circular and symbiotic practices, competitive advantages, innovation, cooperation and barriers and opportunities. The field presents a problem that few literature in fact discusses circular economy approaches in the context of agro-industrial cooperatives. As a methodological procedure, a literature review was carried out in three databases to obtain relevant documents and thus analyse and discuss some characteristics based on circular economy practices applied in agro-industrial cooperatives. As a result, a diagnosis of the current scenario that agro sector organizations are facing in terms of the main rural activities and sustainable practices that relate to the circular economy;measures taken to generate competitive advantage;innovation behaviour;and how linear and circular business models are being applied in the agroindustry. A framework is presented to show potential routes strategies for closing the cycle in an agro-industrial cooperative. The opportunities are based on the implementation of high technology in the field, the use of bioenergy and the development of new circular business models throughout the agro-value chain. The study has contributions to rural properties and managers of cooperatives in terms of waste reduction, innovation generation and increases in activities and processes based on circular economy. © 2022, The Author(s), under exclusive licence to Springer Nature Switzerland AG.

关键词： Agro-industrial business Circular economy Circularity Cooperation Farm

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AN EQUIVALENCY CONDITION OF NONSINGULARITY IN NONLINEAR SEMIDEFINITE programMING

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Journal of systems Science & Complexity 2010年第4期23卷 822-829页

作者： Chengjin LI Wenyu SUN Raimundo J. B. de SAMPAIO School of Mathematical Sciences Nanjing Normal and Computer Science Fujian Normal University Wenyu SUN University Nanjing 210046 China School of Mathematics Fuzhou 350007 China School of Mathematical Sciences Nanjing Normal University Nanjing 210046 China Pontifical Catholic University of Parana ( PUCPR) Graduate Program in Production and Systems Engineering (PPGEPS) CEP 81611-970 Curitiba Parana Brazil

In this paper,an equivalency condition of nonsingularity in nonlinear semidefinite programming,which can be viewed as a generalization of the equivalency condition of nonsingularity for linearsemidefinite programming,... 详细信息

关键词： Equivalency condition of nonsingularity nonlinear semidefinite programming semidefinite programming.

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The caatinga dry tropical forest: A highly efficient carbon sink in South America

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Agricultural and Forest Meteorology 2025年 369卷

作者： Mendes, Keila R. Oliveira, Pablo E.S. Lima, José Romualdo S. Moura, Magna S.B. Souza, Eduardo S. Perez-Marin, Aldrin M. Cunha, John Elton B.L. Mutti, Pedro R. Costa, Gabriel B. de Sá, Thales N. Martins Araujo, Paula A.A. Ferreira, Rosaria R. Marques, Thiago V. Rodrigues, Daniele T. Campos, Suany Melo, Mariana M.L.V. Silva, Israel V.H. Morais, Leonardo F. Nascimento, Fábio S. Silva, Iara B. Xavier, Gustavo S. Silva, Any Caroline N. Oliveira, Ane Caroline C.F. Reis, Jean S. Silva, Daniel F. Medeiros, Erika V. Oliveira, Cássio L. Lopes, Márcio Henrique L. Alves, Maria Fernanda A.T. Alves, Edevaldo M. Santos, Carlos A.C. dos Silva, Bruce K.N. Pereira, Waldeir S. Bezerra, Alan C. Silva, José Raliuson I. Oresca, Denizard Souza, Rodolfo M.S. Nóbrega, Rodolfo L.B. Silva, Thieres G.F. Souza, Luciana S.B. Galvincio, Josicleda D. von Randow, Celso Verhoef, Anne Bezerra, Bergson G. Silva, Cláudio M. Santos e Antonino, Antonio C.D. Menezes, Rômulo S.C. Climate Sciences Post-graduate Program Federal University of Rio Grande do Norte Natal Rio Grande do Norte Brazil Department of Atmospheric and Climate Sciences Federal University of Rio Grande do Norte Natal Rio Grande do Norte Brazil Federal University of the Agreste of Pernambuco Graduate Program in Agricultural Production Pernambuco Garanhuns Brazil Brazilian Agricultural Research Corporation (EMBRAPA) Embrapa Semi-arid Petrolina Pernambuco Brazil Brazilian Agricultural Research Corporation (EMBRAPA) Embrapa Tropical Agroindustry Ceara Fortaleza Brazil Academic Unit of Serra Talhada Federal Rural University of Pernambuco Pernambuco Serra Talhada Brazil National Institute of Semi-arid Desertification and agroecology research group Paraíba Campina Grande Brazil Federal University of Campina Grande Centre for the Sustainable Development of the Semi - Arid Paraíba Campina Grande Brazil Biosciences Post-Graduate Program (PPGBIO) Federal University of Western Pará (UFOPA) Pará Santarém Brazil Postgraduate Program in Natural Resources of the Amazon - PPGRNA- Federal University of Western Pará (UFOPA) Pará Santarém Brazil Postgraduate Program in Forest Science Technology and Innovation - PPGCTIF- Federal University of Western Pará (UFOPA) Pará Santarém Brazil Biotechnology and Biodiversity–Bionorte Network (REDE BIONORTE) Federal University of Western Pará (UFOPA) Pará Santarém Brazil Amazon Tall Tower Observatory (ATTO) Program Large Scale Biosphere-Atmosphere in the Amazon (LBA) Amazonas Manaus Brazil Department of Statistic Federal University of Piauí PI Teresina 64049-550 Brazil SENAI Institute of Innovation - Renewable Energies Natal Rio Grande do Norte Brazil Federal University of Pernambuco PE Caruaru Brazil Federal University of Campina Grande Academic Unit of Atmospheric Sciences Paraíba Campina Grande Brazil Texas Transportation Institute Bryan TX United States University of Bristol School of Geographical Sciences University Rd Bristol

Seasonally Dry Tropical Forests (SDTFs) may act as considerable carbon sinks, regulating the atmospheric and terrestrial carbon storage and fluxes with implications for local, regional and global climates. In the Caatinga, an endemic Brazilian SDTF, the research on the magnitude of the CO₂ sink is still incipient. To address this gap, we conducted a comprehensive analysis of observed CO₂ fluxes using the Eddy Covariance technique across the Caatinga, quantifying and assessing the seasonal and interannual variations in CO₂ exchange under contrasting soil and climatic conditions. In our study we estimated whether the Caatinga functioned as a net source or sink of carbon at five sites during years with varying rates of rainfall. Results showed that the dynamics of CO₂ flux components varied based on the spatio-temporal distribution and magnitude of rainfall and the corresponding variations in vegetation cover. Average annual accumulated Gross Primary Productivity ranged from 1167 g C m⁻² in the Crystalline area to 2018 g C m⁻² in the Agreste ecotone. Average annual Net Ecosystem Exchange was -775 g C m⁻² (-7.7 t C ha⁻¹). The Caatinga exhibited higher carbon use efficiency (CUE) compared to other dry forests in arid and semi-arid regions worldwide and to South American ecosystems, including the Amazon, as documented by FLUXNET2015 eddy covariance datasets. CUE values ranged from 0.31 in the Crystalline area to 0.58 in the Agreste ecotone. These findings provide robust, measurement-based evidence that the Caatinga is a highly efficient carbon sink, substantially contributing to atmospheric CO₂ absorption and mitigating the growth rate of atmospheric CO₂ concentration. © 2025 Elsevier B.V.

关键词： Ecosystem respiration Eddy covariance FLUXNET Gross primary productivity Partitioning of CO2 fluxes Turbulent CO2 flux

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Enhancing control engineering education using a CACSD didactic environment

Enhancing control engineering education using a CACSD didact...

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IEEE International Conference on systems, Man and Cybernetics

作者： E.R. Loures M.R. Silveira M.A. Busetti Y. Arda Graduate Program in Production Systems Engineering Pontifical Catholic University of Paraná Curitiba Brazil

The classical approaches to teach the control systems present drawbacks, such as: (i) the general overview of the problem is sometimes underemphasized by the knowledge acquisition; (ii) they mainly use the academic examples that are only dealing with simple concepts and problems; (iii) laboratory experiments are either simple or under developed. Design aspects of control systems when applied to practical processes are important to improve the knowledge of the students and to motivate the utilization of modern methodologies as an emergent technology for the applications in industry. In this work, we point out some important aspects for conceiving a new educational product. We describe our experiences in creating a didactic environment for teaching and learning the control theories in engineering courses based on CACSD (computer aided control system design) and its extension to the research field of industrial problems. Two distinct proposals arise from these experiences for reducing the gap between the theoretical and practical classes, and for teaching the control systems development cycle using mathematical tools and real plants under the virtual instrumentation concept.

关键词： Control engineering education Control systems Electrical equipment industry Industrial control Knowledge acquisition Laboratories Application software Educational products Control theory Design engineering

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PSS Creating Business for Sustainability: The Brazilian Olive Oil Case in Mantiqueira Community

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Procedia CIRP 2017年 64卷 405-410页

作者： Aline Sacchi Homrich Daniel Sattler Theodoro Marly Monteiro de Carvalho Post Graduate Program in Production Engineering University of São Paulo (USP)São Paulo Brazil Production Engineering Department University of São Paulo (USP)São Paulo Brazil

This study aims to investigate the influence of Product-Service-systems on sustainability in small rural communities. The methodological approach is a case-based research. A case of olive processing in the Mantiqueira mountain range community, an inland region from Brazil, is in-depth analyzed. This case is a result-oriented PSS deployment that brings some insights on the creation of new business ecosystems, previously unfeasible due to the large amount of hectares dominated by small proprieties with intensive familiar farming labor. Some aspects of this PSS business model on producing olive oil more intensively introduced in the region by 2012 are the access to more financially viable technologies; financing and partnerships with government; on distance labor training possibility and compact equipment automation for olives processing. It enables new businesses previously limited to producers with large investment possibilities. In addition, it collaborates with the local economy, adding value to products offered by the farmers, promoting sustainable land management through the waste reuse and encourages tourism, job creation and skilled labor training, collaborating with progress in small agricultural towns in the inland.

关键词： Result-oriented PSS feasibility Sustainability aspects Olive Oil Case Study

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A DIAGNOSIS FRAMEWORK OF HYBRID DYNAMIC systems BASED ON TIME FUZZY PETRI NETS

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IFAC Proceedings Volumes 2005年第1期38卷 55-60页

作者： E. Rocha Loures J.C. Pascal Laboratory for Analysis and Architecture of Systems – LAAS/CNRS Toulouse-France Graduate Program in Production System Engineering – PUCPR Curitiba-Brazil

This paper presents a diagnosis framework based on a qualitative model of the process. Starting from a dynamic abstraction procedure under a defined operating mode a fuzzy partitioning of the variables evolution is made, defining for each measured or observable variable a number of qualitative states. Then time Fuzzy intervals representing the moment of state change are defined. The process behaviour of the operating mode is represented by Time Fuzzy Petri nets (TFPN) model and its evolution is the consequence of events detection due to the partitioning bounds crossing. According to the membership possibility of an event to the estimated time interval and to fuzzy influence knowledge, it is possible to reason about a fault occurrence. The fuzzy data issue from the TFPN components allows evaluating the causes of the fault or failure mode. A model-based diagnosis of a hybrid system is presented.

关键词： Time fuzzy Petri nets qualitative modelling possibility theory detection diagnosis hybrid systems

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Particle Swarm Optimization with Quasi-Newton Local Search for Solving Economic Dispatch Problem

Particle Swarm Optimization with Quasi-Newton Local Search f...

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IEEE International Conference on systems, Man and Cybernetics

作者： Leandro dos Santos Coelho Viviana Cocco Mariani Production and Systems Engineering Graduate Program Automation and Systems Laboratory Pontifical Catholic University of Paraná Curitiba Brazil

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 with a Quasi-Newton (QN) local search method. The PSO is used to produce good potential solutions, and the QN is used to fine-tune of final solution of PSO. The hybrid methodology is validated for a test system consisting of 13 thermal units whose incremental fuel cost function takes into account the valve-point loading effects.

关键词： Particle swarm optimization Power generation Power generation economics Fuel economy Cost function Equations Power system economics System testing Character generation Constraint optimization

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Current Panorama, Practice Gaps, and Recommendations to Accelerate the Transition to a Circular Bioeconomy in Latin America and the Caribbean

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Circular Economy and Sustainability 2022年第1期2卷 281-312页

作者： Salvador, Rodrigo Pereira, Reinalda Blanco Sales, Gabriel Fernandes de Oliveira, Vanessa Campana Vergani Halog, Anthony De Francisco, Antonio C. Sustainable Production Systems Laboratory (LESP) Graduate Program in Industrial Engineering (PPGEP) Universidade Tecnológica Federal Do Paraná (UTFPR) Ponta Grossa Brazil School of Earth and Environmental Sciences The University of Queensland St Lucia 4072 QLD Australia

The rampant use of resources and the increasing risk of scarcity have been contributing to greater awareness regarding the need for maintaining resources in use for longer and the shift to renewable alternatives, in which perspective the concept of a circular bioeconomy (CBE) has been permeating the most diverse sectors. Therefore, the study’s aims were manifold: identify (i) existing practices and initiatives, (ii) barriers and potential opportunities and (iii) existing gaps for advancing a circular bioeconomy in Latin America and the Caribbean (LAC) and (iv) provide recommendations aiming at the development of a circular bioeconomy (CBE) in the region. To that end, a systematic review of the existing academic literature was done, and reports from relevant non-peer reviewed sources were also consulted. CBE practices in LAC are concentrated in only a few of the countries in the region and very much revolve around recovering value from by-products and waste streams. There are a range of economic, technological, environmental, and social barriers. Opportunities for a CBE are mainly related to the use of waste as raw material (found abundantly in the countries being investigated) and the use of new techniques/technologies. The gaps between the current state and a successful CBE are related to policy, scaling-up, collaborations, and establishing efficient business models. Recommendations for a successful CBE in the region include greater engagement of public actors, investing and developing the local economy, establishing biorefineries and industrial parks, and finding new technological routes for bioresources. © 2021, The Author(s), under exclusive licence to Springer Nature Switzerland AG.

关键词： Bioeconomy Circular bioeconomy Circular business Circular economy Latin America Policy

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A genetic algorithm based method to support the geometric prosthesis modelling in skull repairing

A genetic algorithm based method to support the geometric pr...

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2013 International Conference on Biomedical engineering and Environmental engineering (ICBEEE 2013)

作者： Marcelo Rudek Osiris Canciglieri Junior Thiago Greboge Anderson Luis Szejka Industrial and Systems Engineering Post-Graduate Program PPGEPSPontifical Catholic University of ParanaPUCPR

This paper addresses the problem of the geometric modeling of prosthesis to correct defects in skull bone by computational approach viewpoint. The missing area in a defective skull can be virtually filled by a criterion based on the curvature of the skull shape. The basic argument is that in a computed tomography, the 2D skull border in slice image is similar to a rounded form. This research is proposing a method to find adjusted ellipses on its curvature by Ellipse Adjustment Algorithm(EAA) technique. If the ellipse is correctly adjusted in each computed tomography slice, the resulting arcs that fill the missing area can be built in 3D in order to complete an unknown region in the bone. The problem is that there are many possible solutions and the selection of the best ellipse that fits the contour shape is performed by a Genetic Algorithm(GA). The piece of bone that was missed in skull can be built as a synthetic image to fill a hole at defect position in the skull. With the ellipse parameters it is possible to generate profiles with its set of points in order to build the 3D model using a CAD system. The case study shows the use of the method applied to non-symmetric defects and presents the obtained results.

关键词： Prosthesis modelling tomography images genetic algorithm

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What can a big program teach us about optimization?

What can a big program teach us about optimization?

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5th International Symposium on Search-Based Software engineering, SSBSE 2013

作者： De Oliveira Barros, Márcio De Almeida Farzat, Fábio Post-graduate Information Systems Program PPGI/UNIRIO Av. Pasteur 458 Urca - Rio de Janeiro RJ Brazil Computers and System Engineering Program COPPE/UFRJ Cidade Universitária Cx Postal 68501 Rio de Janeiro RJ Brazil

ISBN: (纸本)9783642397417

In this paper we report on the evolution of Apache Ant, a build automation tool developed in Java. We observed a typical case of architectural mismatch in this system: its original simple design was lost due to maintenance and addition of new features. We have applied SBSE techniques to determine whether the search would be able to recover at least parts of the original design, in a metrics-based optimization. We observed that current SBSE techniques produce complex designs, but they also allow us to study the limitations of present design metrics. In the end, we propose a new research perspective joining software clustering and refactoring selection to improve software evolution. © 2013 Springer-Verlag.

关键词： Optimization

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