Sérgio Ivan Lopes

Publication Activity (10 Years)

Years Active: 2012-2024
Publications (10 Years): 38

Top Topics

Thermal Imaging

Convolutional Neural Networks

Olap Data Cubes

Quality Management

Top Venues

Publications

Sérgio Ivan Lopes, Fábio Silva, Pedro Pinho, Paulo Marques, Carlos Abreu, João Milheiro, Bruno Braga, Gabriel Queirós, Rita Almeida, Nuno Borges Carvalho
CoViS: A Contactless Health Monitoring System for the Nursing Home. IEEE Access 12 (2024)
Azin Moradbeikie, Rolando Azevedo, Cristiano Jesus, Sérgio Ivan Lopes
RSSI-Based Localization in Industrial Environments: A Wi-Fi/BLE Hybrid Approach. ICIT (2024)
Hannaneh Barahouei Pasandi, Azin Moradbeikie, Daniel Barros, David Verde, Sara Paiva, Sérgio Ivan Lopes
Improving BLE Fingerprint Radio Maps: A Method based on Fuzzy Clustering and Weighted Interpolation. IIoT-NETs@SIGCOMM (2023)
Asma Haghighat, Zahra Sirous, Azin Moradbeikie, Ahmad Keshavarz, Sérgio Ivan Lopes
Improving LoRaWAN Fingerprint-Based Localization by Detecting and Eliminating Noisy RSSI Measurements. WF-IoT (2023)
Daniel Barros, António M. R. Da Cruz, Sérgio Ivan Lopes
Hybrid Building Occupancy Estimation using Thermal Imaging and Environmental Sensing. ICIT (2023)
Ebrahim Darabi, Azin Moradbeikie, Ahmad Keshavarz, Sérgio Ivan Lopes
RELIANCE: A Reliable and Power Efficient LoRaWAN Optimization Approach for IoT Systems. WF-IoT (2023)
Azin Moradbeikie, Ahmad Keshavarz, Habib Rostami, Sara Paiva, Sérgio Ivan Lopes
A cost-effective LoRaWAN-based IoT localization method using fixed reference nodes and dual-slope path-loss modeling. Internet Things 24 (2023)
Cristiano Jesus, Eduardo Pontes, Rui M. Lima, Sérgio Ivan Lopes
Adopting Industry 4.0 and Lean Practices in Heavy Metalworking: Impact of Human Factors on Productivity. WorldCIST (3) (2023)
Abdolreza Mosaddegh, Sérgio Ivan Lopes, Habib Rostami, Ahmad Keshavarz, Sara Paiva
A Hybrid Framework for Visual Positioning: Combining Convolutional Neural Networks with Ontologies. EAI Endorsed Trans. Energy Web 9 (40) (2022)
Hannaneh Barahouei Pasandi, Asma Haghighat, Azin Moradbeikie, Ahmad Keshavarz, Habib Rostami, Sara Paiva, Sérgio Ivan Lopes
Low-Cost Traffic Sensing System Based on LoRaWAN for Urban Areas. CoRR (2022)
Paula Fraga-Lamas, Daniel Barros, Sérgio Ivan Lopes, Tiago M. Fernández-Caramés
Mist and Edge Computing Cyber-Physical Human-Centered Systems for Industry 5.0: A Cost-Effective IoT Thermal Imaging Safety System. Sensors 22 (21) (2022)
Paula Fraga-Lamas, D. Barros, Sérgio Ivan Lopes, Tiago M. Fernández-Caramés
Mist and Edge Computing Cyber-Physical Human-Centered Systems for Industry 5.0: A Cost-Effective IoT Thermal Imaging Safety System. CoRR (2022)
Rolando Azevedo, Joaquim P. Silva, Nuno Lopes, António Curado, Leonel J. R. Nunes, Sérgio Ivan Lopes
Towards Indoor Radon Analytics: An OLAP-based Multidimensional Approach. DATA (2022)
André Rocha, Sérgio Ivan Lopes, Carlos Abreu
A Cost-effective Infrared Thermographic System for Diabetic Foot Screening. WiMob (2022)
Nuno Torres, Pedro Pinto, Sérgio Ivan Lopes
Exploiting Physical Layer Vulnerabilities in LoRaWAN-based IoT Networks. WF-IoT (2022)
Hannaneh Barahouei Pasandi, Asma Haqiqat, Azin Moradbeikie, Ahmad Keshavarz, Habib Rostami, Sara Paiva, Sérgio Ivan Lopes
Low-cost traffic sensing system based on LoRaWAN for urban areas. EmergingWireless@CoNEXT (2022)
Bruno Braga, Gabriel Queirós, Carlos Abreu, Sérgio Ivan Lopes
Assessment of Low-Cost Infrared Thermography Systems for Medical Screening in Nursing Homes. WiMob (2021)
Ricardo Santil, Bruno Gomes, Sara Paiva, Sérgio Ivan Lopes
Crowd Quantification with Flow Direction Estimation: a Low-Cost IoT-enabled Solution. GCAIoT (2021)
Sérgio Ivan Lopes, Pedro Pinho, Paulo Marques, Carlos Abreu, Nuno Borges Carvalho, José Ferreira
Contactless Smart Screening in Nursing Homes: an IoT-enabled solution for the COVID-19 era. WiMob (2021)
Paula Fraga-Lamas, Sérgio Ivan Lopes, Tiago M. Fernández-Caramés
Green IoT and Edge AI as Key Technological Enablers for a Sustainable Digital Transition towards a Smart Circular Economy: An Industry 5.0 Use Case. Sensors 21 (17) (2021)
Azin Moradbeikie, Ahmad Keshavarz, Habib Rostami, Sara Paiva, Sérgio Ivan Lopes
Improvement of RSSI-Based LoRaWAN Localization Using Edge-AI. SmartCity360° (2021)
João Passos, Sérgio Ivan Lopes, Filipe Manuel Clemente, Pedro Miguel Moreira, Markel Rico-González, Pedro Bezerra, Luís Paulo Rodrigues
Wearables and Internet of Things (IoT) Technologies for Fitness Assessment: A Systematic Review. Sensors 21 (16) (2021)
João Silva, Luis Barreto, Sérgio Ivan Lopes
Security in V2X Communications: A Comparative Analysis of Simulation/Emulation Tools. SmartCity360° (2021)
Diogo Rocha, Pedro Rocha, Jorge Ribeiro, Sérgio Ivan Lopes
Identification and Classification of Human Body Parts for Contactless Screening Systems: An Edge-AI Approach. SmartCity360° (2021)
João Mendes, Ana Curralo, António Curado, Sérgio Ivan Lopes
Fostering Sustainability on Campus: Design of an IoT-Enabled Smartbottle for Plastic Reduction in the Academic Environment. AHFE (19) (2021)
Fábio Silva, Rita Almeida, Pedro Pinho, Paulo Marques, Sérgio Ivan Lopes
Evaluation of a Low-Cost COTS Bio Radar for Vital Signs Monitoring. ISC2 (2021)
Pedro Martins, Sérgio Ivan Lopes, António Curado
Designing a FIWARE-Based Smart Campus with IoT Edge-Enabled Intelligence. WorldCIST (3) (2021)
António Abreu, Sérgio Ivan Lopes, Vitor Manso, António Curado
Low-Cost LoRa-Based IoT Edge Device for Indoor Air Quality Management in Schools. SmartCity360° (2020)
Felisberto Pereira, Sérgio Ivan Lopes, Nuno Borges Carvalho, António Curado
RnProbe: A LoRa-Enabled IoT Edge Device for Integrated Radon Risk Management. IEEE Access 8 (2020)
Felisberto Pereira, Ricardo Correia, Pedro Pinho, Sérgio Ivan Lopes, Nuno Borges Carvalho
Challenges in Resource-Constrained IoT Devices: Energy and Communication as Critical Success Factors for Future IoT Deployment. Sensors 20 (22) (2020)
Felisberto Pereira, Sérgio Ivan Lopes, Nuno Borges Carvalho
Design of a Cost-Effective Multimodal IoT Edge Device for Building Occupancy Estimation. ISC2 (2019)
Sérgio Ivan Lopes, Pedro Miguel Moreira, António M. Cruz, Pedro Martins, Felisberto Pereira, António Curado
RnMonitor: a WebGIS-based platform for expedite in situ deployment of IoT edge devices and effective Radon Risk Management. ISC2 (2019)
Rolando Azevedo, Joaquim P. Silva, Nuno Lopes, António Curado, Sérgio Ivan Lopes
Short-Term Indoor Radon Gas Study in a Granitic School Building: A Comparative Analysis of Occupation Periods. SmartCity360° (2019)
Sérgio Ivan Lopes, Sanne Bogers, Pedro Miguel Moreira, António Curado
A Visual Analytics Approach for Effective Radon Risk Perception in the IoT Era. SmartCity360° (2019)
Sérgio Ivan Lopes, Felisberto Pereira, José M. N. Vieira, Nuno Borges Carvalho, António Curado
Design of Compact LoRa Devices for Smart Building Applications. GreeNets (2018)
Sérgio Ivan Lopes, António Miguel Rosado da Cruz, Pedro Miguel Moreira, Carlos Abreu, Joaquim P. Silva, Nuno Lopes, José M. N. Vieira, António Curado
On the design of a Human-in-the-Loop Cyber-Physical System for online monitoring and active mitigation of indoor Radon gas concentration. ISC2 (2018)
Daniel F. Albuquerque, José Manuel Neto Vieira, Sérgio Ivan Lopes, Teodoro Aguilera, Fernando J. Álvarez
High energy OFDM pulse design algorithm for acoustic ToF ranging and localization. IPIN (2016)
Daniel F. Albuquerque, José Manuel Neto Vieira, Sérgio Ivan Lopes, Teodoro Aguilera, Fernando J. Álvarez
Doppler resilient modulation in a CDMA-based acoustic local positioning system. IPIN (2016)
Sérgio Ivan Lopes, José M. N. Vieira, João Reis, Daniel F. Albuquerque, Nuno Borges Carvalho
Accurate smartphone indoor positioning using a WSN infrastructure and non-invasive audio for TDoA estimation. Pervasive Mob. Comput. 20 (2015)
Teodoro Aguilera, Fernando J. Álvarez, Almudena Sánchez, Daniel F. Albuquerque, José Manuel Neto Vieira, Sérgio Ivan Lopes
Characterization of the Near-Far problem in a CDMA-based acoustic localization system. ICIT (2015)
Sérgio Ivan Lopes, José M. N. Vieira, Daniel F. Albuquerque
Analysis of the perceptual impact of high frequency audio pulses in smartphone-based positioning systems. ICIT (2015)
Sérgio Ivan Lopes, José Manuel Neto Vieira, Óscar F. F. Lopes, Pedro R. M. Rosa, Nuno A. S. Dias
MobiFree: A Set of Electronic Mobility Aids for the Blind. DSAI (2012)
Sérgio Ivan Lopes, José Manuel Neto Vieira, Daniel F. Albuquerque
High Accuracy 3D Indoor Positioning Using Broadband Ultrasonic Signals. TrustCom (2012)