Visual Material Characteristics Learning for Circular Healthcare

The linear take-make-dispose paradigm at the foundations of our traditional economy is proving to be unsustainable due to waste pollution and material supply uncertainties. Hence, increasing the circularity of material flows is necessary. In this paper, we make a step towards circular healthcare by developing several vision systems targeting three main circular economy tasks: resources mapping and quantification, waste sorting, and disassembly. The performance of our systems demonstrates that representation-learning vision can improve the recovery chain, where autonomous systems are key enablers due to the contamination risks. We also published two fully-annotated datasets for image segmentation and for key-point tracking in disassembly operations of inhalers and glucose meters. The datasets and source code are publicly available.Comment: To be submitte

Material Measurement Units: Foundations Through a Survey

Long-term availability of minerals and industrial materials is a necessary condition for sustainable development as they are the constituents of any manufacturing product. In particular, technologies with increasing demand such as GPUs and photovoltaic panels are made of critical raw materials. To enhance the efficiency of material management, in this paper we make three main contributions: first, we identify in the literature an emerging computer-vision-enabled material monitoring technology which we call Material Measurement Unit (MMU); second, we provide a survey of works relevant to the development of MMUs; third, we describe a material stock monitoring sensor network deploying multiple MMUs.Comment: In preparation for submission to ACM Computing Survey

Circularity of Thermodynamical Material Networks: Indicators, Examples and Algorithms

The transition towards a circular economy has gained importance over the last years since the traditional linear take-make-dispose paradigm is not sustainable in the long term. Recently, thermodynamical material networks (TMNs) [1] have been proposed as an approach to re-design material flows based on the idea that any supply chain can be seen as a set of thermodynamic compartments that can be added, removed, modified or connected differently. In this paper, we develop several circularity indicators of TMNs using a graph-based formalism and demonstrate their calculation through examples. The paper source code is publicly available.Comment: To be added one more exampl

Digital Twins for Marine Operations: A Brief Review on Their Implementation

While the concept of a digital twin to support maritime operations is gaining attention for predictive maintenance, real-time monitoring, control, and overall process optimization, clarity on its implementation is missing in the literature. Therefore, in this review we show how different authors implemented their digital twins, discuss our findings, and finally give insights on future research directions.Comment: Submitte

Greedy Search Algorithms for Unsupervised Variable Selection: A Comparative Study

Dimensionality reduction is a important step in the development of scalable and interpretable data-driven models, especially when there are a large number of candidate variables. This paper focuses on unsupervised variable selection based dimensionality reduction, and in particular on unsupervised greedy selection methods, which have been proposed by various researchers as computationally tractable approximations to optimal subset selection. These methods are largely distinguished from each other by the selection criterion adopted, which include squared correlation, variance explained, mutual information and frame potential. Motivated by the absence in the literature of a systematic comparison of these different methods, we present a critical evaluation of seven unsupervised greedy variable selection algorithms considering both simulated and real world case studies. We also review the theoretical results that provide performance guarantees and enable efficient implementations for certain classes of greedy selection function, related to the concept of submodularity. Furthermore, we introduce and evaluate for the first time, a lazy implementation of the variance explained based forward selection component analysis (FSCA) algorithm. Our experimental results show that: (1) variance explained and mutual information based selection methods yield smaller approximation errors than frame potential; (2) the lazy FSCA implementation has similar performance to FSCA, while being an order of magnitude faster to compute, making it the algorithm of choice for unsupervised variable selection.Comment: Submitted to Engineering Applications of Artificial Intelligenc

Thermodynamical Material Networks for Modeling, Planning and Control of Circular Material Flows

Waste production, carbon dioxide atmospheric accumulation and dependence on finite natural resources are expressions of the unsustainability of the current industrial networks that supply fuels, energy and manufacturing products. In particular, circular manufacturing supply chains and carbon control networks are urgently needed. To model and design these and, in general, any material networks, we propose to generalize the approach used for traditional networks such as water and thermal power systems using compartmental dynamical systems thermodynamics, graph theory and the force-voltage analogy. The generalized modeling methodology is explained, then challenges and future research directions are discussed. We hope this paper inspires to use dynamical systems and control, which are typically techniques used for industrial automation, for closing material flows, which is an issue of primary concern in industrial ecology and circular economy.Comment: Perspective paper in preparatio

La educación técnico-profesional en los procesos de desarrollo latinoamericanos

El debate en torno a la educación técnica, su metodología y finalidad, generalizado después de la segunda guerra mundial, ha derivado en el surgimiento de nuevos y diversos roles en los procesos de desarrollo económico y productivo de los países. En este contexto, la formación técnica ha tenido un papel clave en los ámbitos educativos en la implementación de políticas de desarrollo. El objetivo de este trabajo, radica en examinar literatura sobre estos debates y analizar casos representativos de los países latinoamericanos, que reflejen diversos abordajes inherentes a las particularidades de cada territorio y arribar a perspectivas concluyentes.The debate about technical education, its methodology and its purpose, which became widespread after the Second World War, has resulted in the emergence of new and diverse roles within the processes of economic and productive development of the countries. In this context, technical training has played a key role in the educational field for the implementation of development policies. The objective of this work focuses on examining literature on these debates and analyzes representative cases of Latin American countries, which reflect different approaches inherent to the particularities of each territory to arrive at conclusive perspectives.O debate em torno da educação técnica, sua metodologia e finalidade, generalizado após a segunda guerra mundial, tem derivado no surgimento de novos e diversos papéis nos processos de desenvolvimento econômico e produtivo dos países. Neste contexto, a formação técnica tem tido um papel finque nos âmbitos educativos na implementação de políticas de desenvolvimento. O objetivo deste trabalho, arraiga em examinar literatura sobre estes debates e analisar casos representativos dos países latinoamericanos, que reflitam diversas abordagens inerentes às particularidades da cada territorio e arribar a perspectivas concluyentes.Presentado en el V Congreso de Creatividad, Diseño y Comunicación para Profesores y Autoridades de Nivel Medio. `Interfaces Palermo´ (Buenos Aires, 2018

La educación técnico-profesional en los procesos de desarrollo latinoamericanos

El debate en torno a la educación técnica, su metodología y finalidad, generalizado después de la segunda guerra mundial, ha derivado en el surgimiento de nuevos y diversos roles en los procesos de desarrollo económico y productivo de los países. En este contexto, la formación técnica ha tenido un papel clave en los ámbitos educativos en la implementación de políticas de desarrollo. El objetivo de este trabajo, radica en examinar literatura sobre estos debates y analizar casos representativos de los países latinoamericanos, que reflejen diversos abordajes inherentes a las particularidades de cada territorio y arribar a perspectivas concluyentes.The debate about technical education, its methodology and its purpose, which became widespread after the Second World War, has resulted in the emergence of new and diverse roles within the processes of economic and productive development of the countries. In this context, technical training has played a key role in the educational field for the implementation of development policies. The objective of this work focuses on examining literature on these debates and analyzes representative cases of Latin American countries, which reflect different approaches inherent to the particularities of each territory to arrive at conclusive perspectives.O debate em torno da educação técnica, sua metodologia e finalidade, generalizado após a segunda guerra mundial, tem derivado no surgimento de novos e diversos papéis nos processos de desenvolvimento econômico e produtivo dos países. Neste contexto, a formação técnica tem tido um papel finque nos âmbitos educativos na implementação de políticas de desenvolvimento. O objetivo deste trabalho, arraiga em examinar literatura sobre estes debates e analisar casos representativos dos países latinoamericanos, que reflitam diversas abordagens inerentes às particularidades da cada territorio e arribar a perspectivas concluyentes.Facultad de Bellas Arte

La educación técnico-profesional en los procesos de desarrollo latinoamericanos

El debate en torno a la educación técnica, su metodología y finalidad, generalizado después de la segunda guerra mundial, ha derivado en el surgimiento de nuevos y diversos roles en los procesos de desarrollo económico y productivo de los países. En este contexto, la formación técnica ha tenido un papel clave en los ámbitos educativos en la implementación de políticas de desarrollo. El objetivo de este trabajo, radica en examinar literatura sobre estos debates y analizar casos representativos de los países latinoamericanos, que reflejen diversos abordajes inherentes a las particularidades de cada territorio y arribar a perspectivas concluyentes.The debate about technical education, its methodology and its purpose, which became widespread after the Second World War, has resulted in the emergence of new and diverse roles within the processes of economic and productive development of the countries. In this context, technical training has played a key role in the educational field for the implementation of development policies. The objective of this work focuses on examining literature on these debates and analyzes representative cases of Latin American countries, which reflect different approaches inherent to the particularities of each territory to arrive at conclusive perspectives.O debate em torno da educação técnica, sua metodologia e finalidade, generalizado após a segunda guerra mundial, tem derivado no surgimento de novos e diversos papéis nos processos de desenvolvimento econômico e produtivo dos países. Neste contexto, a formação técnica tem tido um papel finque nos âmbitos educativos na implementação de políticas de desenvolvimento. O objetivo deste trabalho, arraiga em examinar literatura sobre estes debates e analisar casos representativos dos países latinoamericanos, que reflitam diversas abordagens inerentes às particularidades da cada territorio e arribar a perspectivas concluyentes.Facultad de Bellas Arte

La educación técnico-profesional en los procesos de desarrollo latinoamericanos

El debate en torno a la educación técnica, su metodología y finalidad, generalizado después de la segunda guerra mundial, ha derivado en el surgimiento de nuevos y diversos roles en los procesos de desarrollo económico y productivo de los países. En este contexto, la formación técnica ha tenido un papel clave en los ámbitos educativos en la implementación de políticas de desarrollo. El objetivo de este trabajo, radica en examinar literatura sobre estos debates y analizar casos representativos de los países latinoamericanos, que reflejen diversos abordajes inherentes a las particularidades de cada territorio y arribar a perspectivas concluyentes.The debate about technical education, its methodology and its purpose, which became widespread after the Second World War, has resulted in the emergence of new and diverse roles within the processes of economic and productive development of the countries. In this context, technical training has played a key role in the educational field for the implementation of development policies. The objective of this work focuses on examining literature on these debates and analyzes representative cases of Latin American countries, which reflect different approaches inherent to the particularities of each territory to arrive at conclusive perspectives.O debate em torno da educação técnica, sua metodologia e finalidade, generalizado após a segunda guerra mundial, tem derivado no surgimento de novos e diversos papéis nos processos de desenvolvimento econômico e produtivo dos países. Neste contexto, a formação técnica tem tido um papel finque nos âmbitos educativos na implementação de políticas de desenvolvimento. O objetivo deste trabalho, arraiga em examinar literatura sobre estes debates e analisar casos representativos dos países latinoamericanos, que reflitam diversas abordagens inerentes às particularidades da cada territorio e arribar a perspectivas concluyentes.Facultad de Bellas Arte