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On proposing a non-intrusive device and methodology to monitor motor degradation

Journal of King Saud University - Engineering Sciences 2023年第3期35卷 215-223页

作者： Kuhn, Henrique Cafruni da Rosa Righi, Rodrigo Crovato, Cesar David Paredes Electrical Engineering Graduate Program Universidade do Vale do Rio dos Sinos São Leopoldo Brazil Applied Computing Graduate Program Universidade do Vale do Rio dos Sinos São Leopoldo Brazil

Monitoring the degradation of induction motors is an essential concern for industries, especially when there are high costs related to maintenance and their stops. Nowadays, there are many non-invasive ways to monitor the health status of induction motors, including sensors to measure temperature, magnetic field, vibration, current, and power. However, installing these sensors may not be a simple task since intrusive procedures such as engine disassembling, wire separation, and engine interruption are commonly observed. Thus, we propose MUCLA (Multiphase Clamp and Tracking - patent pending) as a new device and methodology for monitoring motor degradation by analyzing its stator current. MUCLA introduces a non-invasive current sensors array on a proposed clamp in the hardware perspective, while a spectral tracking methodology refers to our novelty in the software viewpoint. For end-users, the main MUCLA contribution relies on the combination of the simplicity of installation and the possibility of using the proposed device even when considering Variable-Frequency Drive powered engines. The results obtained with both simulation and practical tests show encouraging results over different input workloads and emulated degradation. Compared to the current initiatives, we can classify MUCLA as a better solution for industrial plants in terms of installation time, installation complexity, and cost. © 2021 The Authors

关键词： Induction motors

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A GPU-based hybrid jDE algorithm applied to the 2D-AB protein structure prediction problem 8

A GPU-based hybrid jDE algorithm applied to the 2D-AB protei...

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8th Brazilian Conference on Intelligent Systems, BRACIS 2019

作者： Boiani, Mateus Dominico, Gabriel Stubs Parpinelli, Rafael Graduate Program in Applied Computing Santa Catarina State University Joinville Santa Catarina Brazil

ISBN: (纸本)9781728142531

Protein Structure Prediction (PSP) problem is an open problem in bioinformatics and, as the problem scales, complexity and processing time increases. In this way, robust methods and massively parallel architectures are required. This paper presents a GPU-based hybrid algorithm, named cuHjDE, to handle the 2D-AB off-lattice PSP problem. The cuHjDE is composed of the jDE algorithm and the Hooke-Jeeves local search algorithm. An important feature present in the cuHjDE algorithm is the use of a crowding mechanism to avoid premature convergence promoting diversification in the search space. The proposed algorithm is compared with four state-of-the-art algorithms in both artificial and real proteins. Also, the impact of using GPU is analyzed. Experimental results point out that the proposed approach is competitive in artificial sequences and achieved new best results for all real sequence proteins. © 2019 IEEE.

关键词： Proteins

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programming Variational Quantum Circuits with Quantum-Train Agent

Programming Variational Quantum Circuits with Quantum-Train ...

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Quantum Communications, Networking, and computing (QCNC), International Conference on

作者： Chen-Yu Liu Samuel Yen-Chi Chen Kuan-Cheng Chen Wei-Jia Huang Yen-Jui Chang Graduate Institute of Applied Physics National Taiwan University Taipei Taiwan Hon Hai (Foxconn) Research Institute Taipei Taiwan Wells Fargo New York NY USA Department of Electrical and Electronic Engineering Imperial College London London UK Centre for Quantum Engineering Science and Technology (QuEST) Imperial College London London UK Quantum Information Center Chung Yuan Christian University Taoyuan City Taiwan Master Program in Intelligent Computing and Big Data Chung Yuan Christian University Taoyuan City Taiwan

ISBN: (数字)9798331531591

ISBN: (纸本)9798331531607

This study introduces the Quantum-Train Quantum Fast Weight programmer (QT-QFWP) framework, enabling efficient and scalable programming of variational quantum circuits (VQCs) through quantum-driven parameter updates for the classical slow programmer controlling the fast programmer VQC. By optimizing quantum and classical parameter management, QT-QFWP significantly reduces parameters (by 70–90%) compared to Quantum Long Short-Term Memory (QLSTM) and Quantum Fast Weight programmer (QFWP) while maintaining accuracy. Benchmarking on time-series tasks—including Damped Simple Harmonic Motion (SHM), NARMA5, and Simulated Gravitational Waves (GW)—demonstrates superior efficiency and predictive accuracy. QT-QFWP is particularly advantageous for near-term quantum systems, addressing qubit and gate fidelity constraints, enhancing VQC deployment in time-sensitive applications, and expanding quantum computing’s role in machine learning.

关键词： Quantum system Accuracy Computational modeling Qubit Neural networks programming Predictive models Quantum circuit Physics Long short term memory

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Corrigendum to 'A virtual assistant for primary care's food and nutrition surveillance system: Development and validation study in Brazil' [Patient Educ Couns 130 (2025) 108461]

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Patient education and counseling 2025年 136卷 108783页

作者： Eliza Sella Battisti Mateus Klein Roman Ericles Andrei Bellei Vanessa Ramos Kirsten Ana Carolina Bertoletti De Marchi Greisse Viero Da Silva Leal Graduate Program in Human Aging Institute of Health University of Passo Fundo (UPF) Passo Fundo RS Brazil Graduate Program in Gerontology Department of Foods and Nutrition Federal University of Santa Maria (UFSM) Palmeira das Missões RS Brazil. Graduate Program in Applied Computing Institute of Technology University of Passo Fundo (UPF) Passo Fundo RS Brazil. Graduate Program in Human Aging Institute of Health University of Passo Fundo (UPF) Passo Fundo RS Brazil. Electronic address: 168729@upf.br.

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Cloud elasticity for HPC applications: Observing energy, performance and cost 41

Cloud elasticity for HPC applications: Observing energy, per...

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41st Latin American computing Conference, CLEI 2015

作者： Rodrigues, Vinicius Facco Rostirolla, Gustavo Da Rosa Righi, Rodrigo André Da Costa, Cristiano Barbosa, Jorge Luis Victória Applied Computing Graduate Program - Unisinos Av. Unisinos 950 Sâo Leopoldo RS Brazil

ISBN: (纸本)9781467391436

Elasticity is one of the most known capabilities related to cloud computing, being largely deployed using thresholds. In this way, limits are used to drive resource mangement actions, leading to the following problem statements: How can cloud users set the threshold values to enable elasticity in their cloud applications? And what is the impact of the application's load pattern in the elasticity? This article answers these questions for iterative high performance computing applications, showing the impact of both thresholds and load patterns on application performance and resource consumption. To accomplish this, we developed a reactive and PaaS-based elasticity model called AutoElastic and employed it over a private cloud to execute a numerical integration application. Here, we are presenting an analysis of best practices and possible optimizations regarding the elasticity and HPC pair. Considering the results, we observed that the upper threshold influences the application time more than the lower one. © 2015 IEEE.

关键词： Elasticity

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Automatic clocking and idleness management in enterprise environments using wireless sensors 42

Automatic clocking and idleness management in enterprise env...

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42nd Latin American computing Conference, CLEI 2016

作者： Da Rosa Righi, Rodrigo Rostirolla, Gustavo Andre Da Costa, Cristiano Fischer, Gabriel Souto Wendt, Ivam Guilherme Souza Dos Reis, Eduardo Applied Computing Graduate Program Unisinos Av. Unisinos 950 São Leopoldo RS Brazil

ISBN: (纸本)9781509016334

Clocking represents the manner in which companies register employee data;particularly, data related to entrances to and departures from the company. Being normally implemented with wireless cards or by hand, this procedure can implies on large queues, reducing the emloyee productivity, besides being sensitive to longer complications (when the employee forget to register the clocking, for example). In this context, we developed a model named ACID (Automatic Clocking and Idleness Detection) to bring benefits for both administrators and employees through the use of wireless sensors. Besides eliminating queues, it is possible to analyze those employees that are away from their own places for more than a particular threshold. In addition, the model is also pertinent to enhance decision support when promotions take place. We developed a prototype that was evaluated through simulation, taking into account the architectural plant and the employees behavior of five real Brazilian companies. The results reveals the benefits of using IDAC both at the owner (control and productivity) and employees (the clocking actions occurs automatically) levels. © 2016 IEEE.

关键词： Productivity

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A method to automatically identify road centerlines from georeferenced smartphone data

A method to automatically identify road centerlines from geo...

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14th Brazilian Symposium on GeoInformatics, GEOINFO 2013

作者： Costa, George Henrique Rangel Baldo, Fabiano Graduate Program in Applied Computing Computer Science Department UDESC Santa Catarina State University Joinville Brazil

Digital road maps have gained fundamental role in population's daily life, so they need to be accurate and up-to-date. A viable solution is to generate maps by processing GPS data. However, one of the most challenging tasks regarding this approach is how to extract road centerlines from the cloud of georeferenced GPS points. The literature presents various methods that do it, but none have been found that is prepared for the continuous update of the map and refinement of its roads' accuracy. In this context, the objective of this work is to propose a method to identify road centerlines using an evolutive algorithm in order to generate and update road maps. This work uses as source of data GPS traces collected by smartphones. Although suitable to obtain a large amount of georeferenced data, these devices bring the additional problem of identifying the transport vehicle used along each trace. Preliminary results indicate that the method's performance is satisfactory, with an average variation of 2.95 meters in relation to satellite images.

关键词： Smartphones

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Towards a multilevel energy saving model for smart cities 35

Towards a multilevel energy saving model for smart cities

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35th International Conference of the Chilean Computer Science Society, SCCC 2016

作者： Rostirolla, Gustavo Da Rosa Righi, Rodrigo Andre Da Costa, Cristiano Barbosa, Jorge Luis Victoria Applied Computing Graduate Program-Unisinos Av. Unisinos 950 São Leopoldo RS Brazil

ISBN: (纸本)9781509033393

As a result of rural and suburban migration to the cities, urban life has become a significant challenge for citizens and mayors, imposing a huge concern in the sustainable use of resources like energy, water, transportation and housing. Smart cities are the biggest bet to address these challenges efficiently through a real-time monitoring approach which aims to assist in intelligent planning and sustainable urban development. However, to accomplish this monitoring efficiently and to enable the sustainable use of resources, it is necessary an integration between citizens, city devices and the platform where the data is stored and processed. In this context, we are proposing the 3LES model (3 Levels of Energy Saving for Smart Cities), a model that combines data from citizens, city devices and nodes from the processing plataform to offer a multilevel energy saving proposal. 3LES must act transparently without affecting the quality of the services already offered in the city. This paper presents the components of management and monitoring of power consumption at various levels, as well as a model that monitors the energy consumption of elastic cloud applications. The results are promising, with a model that allows the estimation of the energy consumption of elastic applications based on CPU and memory traces with an average and median precision of 97.15% and 97.72%. In addition, we obtained a reduction of more than 90% in the energy spent in public lighting in the city of Rome when analyzing the citizens' location. © 2016 IEEE.

关键词： Energy utilization

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Recommender systems in mobile apps for health a systematic review 12

Recommender systems in mobile apps for health a systematic r...

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12th Iberian Conference on Information Systems and Technologies, CISTI 2017

作者： Ferretto, Luciano Rodrigo Cervi, Cristiano Roberto De Marchi, Ana Carolina Bertoletti Graduate Program in Applied Computing - PPGCA/ICEG Universidade de Passo Fundo - UPF Passo Fundo Brazil

ISBN: (纸本)9789899843479

This paper aims to identify and analyze recommender systems developed for the health area, available in mobile applications. Therefore, literature was reviewed systematically from ACM, IEEE, Springer and Science Direct databases. 1006 studies were found, eight of which met the eligibility criteria. From the chosen studies, only one was not applied to the areas of nutrition and physical activity. The recommender techniques adopted were Collaborative Filtering and Content-based Filtering. The main mobile device identified was the Smartphone and the Operating System was Android. After analyzing the results, it was possible to realize that, although they are widely used in ecommerce, recommendation systems do not have many mobile healthcare applications, and the existing ones are recent. © 2017 AISTI.

关键词： Smartphones

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Vulcanus: A recommender system for accessibility based on trails 41

Vulcanus: A recommender system for accessibility based on tr...

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41st Latin American computing Conference, CLEI 2015

作者： Cardoso, Ismael Gomes Mota, Bruno Barbosa, Jorge Luis Victória Da Rosa Righi, Rodrigo Applied Computing Graduate Program - Unisinos Av. Unisinos 950 Sâo Leopoldo RS Brazil

ISBN: (纸本)9781467391436

The use of recommender systems is widespread in several everyday systems. People are now exposed to different offerings, based on their interests, in order to anticipate decisions. However, in a different way recommender systems for accessibility domain require further studies and researches. In order to provide resources for people with special needs, we developed the Vulcanus, a recommender system designed for people with disabilities, offering access to resources according user's needs. The recommender system approaches concepts from ubiquitous computing, such as user profiles, context awareness, trails management, and similarity analysis. Vulcanus uses two different approaches: resources patterns and categories patterns;where different systems can use it, for example as a Web Service. Vulcanus was evaluated in different scenarios. These scenarios used more than 800 thousands of trails that simulate wheelchair users using resources along six months. The obtained results show that both approaches are able to provide relevant recommendations, providing resources that in fact can support users' needs. © 2015 IEEE.

关键词： Recommender systems

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