Publications (54)

Thesis (2)

  1. [Lopes2014]
    S. I. Lopes, “In search of reliable centimeter-level indoor positioning: a smartphone-based approach.”, Ph.D. Thesis, Universidade de Aveiro, December 2014. URI: http://hdl.handle.net/10773/14100
  2. [Lopes2009]
    S. I. Lopes, “Localização de obstáculos para invisuais utilizando ultra-sons e técnicas de espacialização auditiva”, M.Sc. Thesis, Universidade de Aveiro, December 2009. URI: http://hdl.handle.net/10773/3873, [Presentation pdf]

Books (1)

  1. [Albuquerque2017]
    D.F. Albuquerque, J.M.N. Vieira, S.I. Lopes, “Indoor Acoustic Simulator: A Modeling and Simulation Framework with Doppler Effect for Broadband Ultrasonic Applications.”, LAP LAMBERT Academic Publishing, February 2017, ISBN-10: 3330042281, ISBN-13: 978-3330042285, EAN:9783330042285. URI: https://www.amazon.com/Indoor-Acoustic-Simulator-Simulation-Applications/dp/3330042281

Book Chapters (2)

  1. [Lo2019]
    S.I. Lopes, S. Lima, T. Santos, J. Palma and D. Miranda (in press), “Otimização da navegabilidade das pessoas com deficiência visual reduzida em espaços urbanos: I&D de utilidade prática e inclusiva.”, Célia Sousa (ed.), Tecnologias de reabilitação e apoio para o bem estar e acessibilidades, Inovatec (Portugal), 2019 (in press). 
  2. [Lo_etal2019]  Scopus    CrossRef
    S.I. Lopes, F. Pereira, J.M.N. Vieira, N.B. Carvalho and A. Curado (2019), Design of Compact LoRa Devices for Smart Building Applications. In: Afonso J., Monteiro V., Pinto J. (Eds.) Green Energy and Networking. GreeNets 2018. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 269, pp 142-153, ISSN 1867-8211, Springer, Cham, DOI: 10.1007/978-3-030-12950-7_12

Journal Articles (7)

  1. [CuSiLo2020]
    A. Curado, J. P. Silva, S. I. Lopes, “Radon risk analysis in a set of public buildings in Minho region, Portugal: from short-term monitoring to radon risk assessment”, Procedia Structural Integrity, Volume 22, 2019, Pages 386-392, ISSN 2452-3216, DOI: 10.1016/j.prostr.2020.01.048
  2. [CuSiLo2019a] Scopus  WOS  CrossRef
    A. Curado, J. P. Silva, S. I. Lopes, “Radon Risk Management in public buildings in northwest Portugal: from short-term characterization to the design of specific mitigation actions”, International Journal of Recent Technology and Engineering, Volume 8 (1), 2019, Pages 90-96, ISSN 2277-3878, DOI: 01.1617/vol6iss5pid001001.
  3. [LoSiAnCu2018] Scopus  WOS  CrossRef
    S.I. Lopes, J.P. Silva, A. Antão, A. Curado, “Short-Term Characterization of the Indoor Air Radon Concentration in a XII Century Monastery converted into a School Building”, Energy Procedia, Volume 153, 2018, Pages 303-308, ISSN 1876-6102, DOI: 10.1016/j.egypro.2018.10.036    .
  4. [CuSiCaLo2017] Scopus  WOS  CrossRef
    A. Curado, J.P. Silva, L. Carvalho, S.I. Lopes, “Indoor Radon Concentration Assessment in a Set of Single Family Houses: Case Study held in Barcelos, North of Portugal”, Energy Procedia, Volume 136, 2017, Pages 109-114, ISSN 1876-6102, DOI: 10.1016/j.egypro.2017.10.295
  5. [Lo_etal2015] Scopus  WOS  CrossRef  – Impact Factor: 2.325  (Q1)
    S. I. Lopes, J. M. N. Vieira, J. Reis, D. F. Albuquerque, N. B. Carvalho, “Accurate smartphone indoor positioning using a WSN infrastructure and non-invasive audio for TDoA estimation”, Pervasive and Mobile Computing Journal, Volume 20, 2015, Pages 29-46, ISSN 1574-1192, DOI: 10.1016/j.pmcj.2014.09.003.
  6. [Al_etal2015] Scopus  WOS  CrossRef  –  Impact Factor: 1.269  (Q1)
    D.F. Albuquerque, José M.N. Vieira, S.I. Lopes, Carlos A.C. Bastos, Paulo J.S.G. Ferreira, “Indoor acoustic simulator for ultrasonic broadband signals with Doppler effect”. Journal of Applied Acoustics, Volume 97, 2015, Pages 140-151, ISSN 0003-682X, DOI: 10.1016/j.apacoust.2015.04.010
  7. [Lo_etal2012b] Scopus  WOS  CrossRef
    S. I. Lopes, J. M. N. Vieira, O. F. F. Lopes, N. A. S. Dias, P. R. M. Rosas, “MobiFree: A Set of Electronic Mobility Aids for the Blind”. Procedia-Computer Science Journal, Volume 14, 2012, Pages 10-19, ISSN 1877-0509, DOI: 10.1016/j.procs.2012.10.002.

Conference Proceedings (39)

  1. [MaLoPeCu2019]
    P. Martins, S. I. Lopes, F. Pereira, A. Curado,     “RnMonitor: an IoT-enabled Platform for Radon Risk Management in Public Buildings”, 5th Smart City 360° Summit 2019 Demos, December 4-6, 2019, Braga, Portugal.
  2. [LoBoMoCu2019] [to be indexed]
    S. I. Lopes, S. Bogers, P. M. Moreira, A. Curado,     “A Visual Analytics Approach for Effective Radon Risk Perception in the IoT Era”, Urb-IoT 2019 – 4th EAI International Conference on IoT in Urban Space, December 4-6, 2019, Braga, Portugal, URI: http://urbaniot.org/accepted-papers/ 
  3. [Az_etal2019b] [to be indexed]
    R. Azevedo, J. Silva, N. Lopes, A. Curado, S. I. Lopes, “Short-Term Indoor Radon Gas Study in a Granitic School Building: a comparative analysis of occupation periods”,  Urb-IoT 2019 – 4th EAI International Conference on IoT in Urban Space, December 4-6, 2019, Braga, Portugal, URI: http://urbaniot.org/accepted-papers/
  4. [CuLo2019]
    A. Curado, S. I. Lopes, “O Gás Radão em Edifícios Escolares: da Caraterização à Mitigação”, CCS 2019 – 1.ª Conferência Campus Sustentável. Faculdade de Engenharia da Universidade do Porto (FEUP), 31 de outubro de 2019, Porto, Portugal, URI: https://repositorio-aberto.up.pt/bitstream/10216/123291/3/362107.2.pdf
  5. [PeLoCa2019c] [to be indexed]
    F. Pereira, S.I. Lopes, N. B. Carvalho, “Design of a Cost-Effective Multimodal IoT Edge Device for Building Occupancy Estimation”, 2019 IEEE International Smart Cities Conference (ISC2 2019), 14-17 October, Casablanca, Morroco, 2019, URI: https://ieee-isc2.org/wp-content/uploads/sites/39/2019/10/Booklet-ISC2-2019.pdf
  6. [Lo_etal2019b] [to be indexed]
    S. I. Lopes, P. M. Moreira, A. M. Cruz, P. Martins, F. Pereira, A. Curado, “RnMonitor: a WebGIS-based platform for expedite in situ deployment of IoT edge devices and effective Radon Risk Management”, 2019 IEEE International Smart Cities Conference (ISC2 2019), 14-17 October, Casablanca, Morroco, 2019, URI: https://ieee-isc2.org/wp-content/uploads/sites/39/2019/10/Booklet-ISC2-2019.pdf
  7. [CuSiLo2019d] [to be indexed]
    A. Curado, J. P. Silva, S.I. Lopes, “Radon Risk Reduction in Public Buildings with Regular Occupancy: a Case Study in Minho Region, Portugal”, SBE Temuco 2019 – Sustainable and Built Environment: Urban Planning, Global Problems and Local Policies, October 16–18, Temuco, Chile, URI: https://sbe19temuco.cl/parallel-sessions/
  8. [Az_etal2019a]
    R. Azevedo, J.P. Silva, N. Lopes, A. Curado and S.I. Lopes, “Short-Term Indoor Radon Gas Assessment in Granitic Public Buildings: a multi-parameter approach”,  CIAC2019 – Conference on Automation Innovation in Construction, November 7-8, Leiria, Portugal, 2019.
  9. [CuSiLo2019c]
    A. Curado, J.P. Silva, S.I. Lopes, “Radon Risk Assessment in a High-Occupancy School Building: a dosimetric approach for Radon Risk Management”, ICEER2019 – 6th International Conference on Energy and Environment Research, 22-25 July 2019, Aveiro, Portugal. 
  10. [CuSiLo2019b]
    A. Curado, J.P. Silva, S.I. Lopes, “Radon Risk Analysis in a Set of Public Buildings in Minho Region, Portugal: From Short-Term Monitoring to Radon Risk Assessment”, IRAS2019 – 1st International Symposium on Risk Analysis and Safety of Complex Structures and Components, 1-2 July 2019, Porto, Portugal. URI: https://tinyurl.com/y3t9j7bn
  11. [Pe_etal2019]  CrossRef
    F. Pereira, S.I. Lopes, J.M.N. Vieira, N.B. Carvalho and A. Curado, “Using Compact LoRa Devices for In-Building Communications”, In Proceedings of the 4th Smart City 360° Summit 2018 Demos, , H. Santos and F. Portela (eds.), EAI 2019, ISBN: 978-1-63190-172-0, ISSN: 2593-7650, DOI: 10.4108/eai.21-11-2018.2280604
  12. [Lo_etal2018a] Scopus    CrossRef
    S.I. Lopes, A. Cruz, P.M. Moreira, C. Abreu, J.P. Silva, N. Lopes, J. Vieira and A. Curado, “On the design of a Human-in-the-Loop Cyber-Physical System for online monitoring and active mitigation of indoor Radon gas concentration,” 2018 IEEE International Smart Cities Conference (ISC2), Kansas City, MO, USA, 2018, pp. 1-8, DOI: 10.1109/ISC2.2018.8656777
  13. [CuLo2018]
    A. Curado, S.I. Lopes, “RnMonitor: Online Monitoring Infrastructure and Strategies for Active Indoor Air Radon Mitigation”, CARIBMAT 2018: 2nd Caribbean Conference on Functional Materials, Cartagena de Indias (Colombia), February 6-9, 2018.
  14. [Pe_etal2017] Scopus  WOS  CrossRef
    F. Pereira, P. Pinho, R. Gonçalves, N.B. Carvalho, J. Lobato, S.I. Lopes, “Antenna design for ultra-compact Bluetooth devices”, 2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, San Diego, CA, USA, 2017, pp. 2619-2620. DOI: 10.1109/APUSNCURSINRSM.2017.8073352
  15. [SiCuCoLo2017]
    J.P. Silva, A. Curado, G. Coelho, S.I. Lopes, “Indoor radon concentration assessment of an old granite manor house requalified as an office in the historic center of Viana do Castelo, Portugal”, TEERAS2017: Third East-European Radon Symposium 2017, 15-19 May 2017, Sofia, Bulgaria, URI: https://tinyurl.com/y8t5dfpk
  16. [AlViLoAgAl2016b] Scopus  WOS  CrossRef
    D. F. Albuquerque, J. M. N. Vieira, S. I. Lopes, T. Aguilera and F. J. Álvarez, “High energy OFDM pulse design algorithm for acoustic ToF ranging and localization,” 2016 International Conference on Indoor Positioning and Indoor Navigation (IPIN), Alcala de Henares, Spain, 2016, pp. 1-6. DOI: 10.1109/IPIN.2016.7743698.
  17. [AlViLoAgAl2016a] Scopus  WOS  CrossRef
    D. F. Albuquerque, J. M. N. Vieira, S. I. Lopes, T. Aguilera and F. J. Álvarez, “Doppler resilient modulation in a CDMA-based acoustic local positioning system,” 2016 International Conference on Indoor Positioning and Indoor Navigation (IPIN), Alcala de Henares, Spain, 2016, pp. 1-8. DOI: 10.1109/IPIN.2016.7743611.
  18. [Lo_etal2016]   CrossRef
    S. I. Lopes    , R. Bexiga, J.P. Araújo, J.L. Cerqueira, C. Abreu, C. Paredes and J.M. Alonso, 2016. Precision livestock farming for reproductive performance optimization: a survey. Food Futures – Ethics, Science & Culture. Edited by: I. Anna S. Olsson, Sofia M. Araújo and M. Fátima Vieira. EurSafe 2016, Porto, Portugal, 29 sep-1 oct. Wageningen Adademic Pub, 587-592, ISBN: 978-90-8686-288-7; e-ISBN:978-90-8686-834-6. DOI: 10.3920/978-90-8686-834-6.
  19. [MiMeLo2016]
    M. Migliardi, A. Merlo, S. I. Lopes, “Crowd-Sourcing an Ontology: Is It Feasible?”, Proc. of the International Conference on Data Compression, Communication, Processing and Security (CCPS2016), Hotel Cetus – Cetara – Salerno, Italy, September 22-23, URI: https://tinyurl.com/y75h7r2z
  20. [CuLo2016]
    A. Curado, S. I. Lopes, “Impact of the human occupation on indoor radon concentration: a study based on in-situ measurements for a set of households in Alto-Minho, Portugal”, 4th European Conference on Behaviour and Energy Efficiency – BEHAVE 2016, 8 – 9 September 2016, University of Coimbra, Portugal, URI: https://tinyurl.com/ybrujb3e 
  21. [LoAbLiAl2015]
    S. I. Lopes, C. Abreu, S. Lima and R. Alves, “WSN-based Vineyard Monitoring System for Automatic Managing of Grape Maturity”, In Proceedings of the 10th Conference on Telecommunications – CONFTELE 2015, Aveiro, Instituto de Telecomunicações, 2015, XVI, 473 p., URI: https://tinyurl.com/ycgmzxey
  22. [Al_etal2015b] Scopus  WOS  CrossRef
    S. J. Alves, F. A. Martins, A. I. Prata, S. I. Lopes, J. C. Duarte, P. Jesus, N. Silva, A. S. Oliveira and N. B. Carvalho, “High Performance Microwave Point-to-Point Link for 5G Backhaul with Flexible Spectrum Aggregation”, IMS2015 International Microwave Symposium 2015, 17-22 May, Phoenix, USA, DOI: 10.1109/MWSYM.2015.7166817.
  23. [LoViAl2015] Scopus  WOS  CrossRef
    S. I. Lopes, J. N. V. Vieira, D. Albuquerque, “Analysis of the Perceptual Impact of High Frequency Audio Pulses in Smartphone-based Positioning Systems”. In Proceedings of the 2015 IEEE International Conference on Industrial Technology, Seville, Spain, 17-19th March 2015, pp.3398-3403, DOI: 10.1109/ICIT.2015.7125603.
  24. [Ag_etal2015] Scopus  WOS  CrossRef
    T. Aguilera, F. J. Álvarez, A. Sánchez, D. Albuquerque, J. N. V. Vieira and S. I. Lopes, “Characterization of the Near-Far Problem in a CDMA-Based Acoustic Localization System”. In Proceedings of the 2015 IEEE International Conference on Industrial Technology, Seville, Spain, 17-19th March 2015, pp.3404-3411, DOI: 10.1109/ICIT.2015.7125604.
  25. [Ca_etal2014]
    G. Campos, P. Dias, J. N. V. Vieira, J. Santos, C. Mendonça, J. P. Lamas, N. Silva, S. I. Lopes, “Acousticave: Auralisation Models and Applications in Virtual Reality Environments”, European Symposium on Smart Cities and Environmental Acoustics, 29-31 October 2014, Murcia, Spain.
  26. [LoViCaDi2014]
    S. I. Lopes, J. M. N. Vieira, G. Campos, P. Dias, “Sistema de Realidade Aumentada Áudio 3D para Dispositivos iOS”. In Proceedings of the 12th Audio Engineering Society Brazil Conference (AES Brazil 2014), R. R. A. Faria (ed.), ISSN 2177-529X, pp.100-104, São Paulo, Brazil, 13-15 May, 2014.
  27. [LoViReAlCa2013]
    S. I. Lopes, J. M. N. Vieira, J. Reis,  D. F. Albuquerque and N. B. Carvalho, “Accurate Smartphone Indoor Positioning Using Non-Invasive Audio”. 2013 International Conference on Indoor Positioning and Indoor Navigation – IPIN 2013. Montbéliard – Belfort, France, 28-31st October, 2013.
  28. [AlViLoBaFe2013]
    D. F. Albuquerque, J. M. N. Vieira, S. I. Lopes, C. A. C. Bastos, P. J. S. G. Ferreira, “OFDM Pulse Design with Low PAPR for Ultrasonic Location and Positioning Systems”. 2013 International Conference on Indoor Positioning and Indoor Navigation – IPIN 2013. Montbéliard – Belfort, France, 28-31st October, 2013, URI: https://tinyurl.com/y7jy2u5j
  29. [Al_etal2013]
    M. A. Alves, R. S. Sousa, S. I. Lopes, V. Almeida, A. J. S. Ferreira, “Voice Type Discovery”. In the 19th edition of the Portuguese Conference on Pattern Recognition – RecPad 2013, Instituto Superior Técnico, Lisbon, Portugal, November the 1st, 2013, URI: https://tinyurl.com/ybec7at8
  30. [Lo_etal2013]
    S. I. Lopes, A. Oliveira, J. M. N. Vieira, G. Campos, P. Dias, R. Costa, “Real-Time Audio Augmented Reality System for Pervasive Applications”. In Proceedings of the 11th Audio Engineering Society Brazil Conference (AES Brazil 2013), R. R. A. Faria (ed.), ISSN 2177-529X, pp.94-97, São Paulo, Brazil, 7-9 May, 2013, URI: https://tinyurl.com/y7x84fyg
  31. [Lo_etal2012a] Scopus  CrossRef
    S. I. Lopes; J. M. N. Vieira; D. F. Albuquerque, “High Accuracy 3D Indoor Positioning Using Broadband Ultrasonic Signals”. Trust, Security and Privacy in Computing and Communications (TrustCom), 2012 IEEE 11th International Conference on, pp.2008-2014, 25-27 June, 2012, DOI: 10.1109/TrustCom.2012.172    .
  32. [AlViCaLo2011]
    D. Almeida , J. M. N. Vieira, G. Campos, S. I. Lopes, “Realidade aumentada áudio para aplicações pervasivas”, In the 13th Meeting of the Portuguese Association of Audio Engineering (APEA), Portuguese Section of the Audio Engineering Society (AES), EESMAE/IPP Porto-Portugal, 7 e 8 de Outubro, 2011, URI: https://tinyurl.com/ybkhnyro
  33. [AlViLoBaFe2011b]
    D. F. Albuquerque, J. M. N. Vieira, S. I. Lopes, C. A. C. Bastos, P. J. S. G. Ferreira, “Indoor Ultrasonic Simulator for Moving Objects Using Delay Filters”. In Proceedings of the 2011 International Conference on Indoor Positioning and Indoor Navigation (IPIN’2011); Moreira, Adriano J. C.; Meneses, Filipe M. L. (eds.), Guimarães, Portugal, 21-23 Setembro 2011, ISBN: 978-972-8692-63-6, URI: https://tinyurl.com/ydfj8bwh
  34. [AlViLoBaFe2011a]
    D. F. Albuquerque, J. M. N. Vieira, S. I. Lopes, C. A. C. Bastos, P. J. S. G. Ferreira, “Indoor Ultrasonic Transfer Function for Moving Objects”. In Proceedings of the 2011 International Conference on Indoor Positioning and Indoor Navigation (IPIN’2011); Moreira, Adriano J. C.; Meneses, Filipe M. L. (eds.), Guimarães, Portugal, 21-23 Setembro 2011, ISBN: 978-972-8692-63-6, URI: https://tinyurl.com/y8z4e3aq
  35. [CoLoAb2010]
    C. Colaço, S. I. Lopes, C. Abreu, “DSP-based Multi-channel Stethoscope”. In the 12th Meeting of the Portuguese Association of Audio Engineering (APEA), Portuguese Section of the Audio Engineering Society (AES). Aveiro, Portugal, 8-9 October 2010, URI: https://tinyurl.com/yaqj4ljg
  36. [ViLoBaFo2007] Scopus  WOS 
    J. M. N. Vieira, S. I. Lopes, C. A. C. Bastos, P. N. Fonseca, “Ultrasound sensor array for robust location.”, In Sapaty, P and Filipe, J, editor, Multi-Agent Robotic Systems, Proceedings, pages 84–93, 2007. 3rd International Workshop on Multi-Agent Robotic Systems, Angers, FRANCE, MAY, 2007, ISBN: 978-972-8865-85-6, DOI: 10.5220/0001634200840093.
  37. [Al_etal2006]
    L. Almeida, J. L. Azevedo, G. Corrente, M. B. Cunha, A. Ferdowsi, J. P. Figueiredo, P. Fonseca, S. I. Lopes, R. Marau, N. Lau, P. Pedreiras, A. Pereira, A. Pinho, J. Rocha, F. Santos, L. S. Lopes, V. Silva, J. M. N. Vieira, “CAMBADA’2006: Team Description Paper”. Encontro Científico do Festival Nacional de Robótica 2006. Guimarães, Portugal, April 2006, URI: https://tinyurl.com/ybtfvdd3
  38. [ViLoBaFo2006]
    J. M. N. Vieira, S. I. Lopes, C. A. C. Bastos, P. N. Fonseca, “Sistema de localização utilizando ultra-sons”. Encontro Científico do Festival Nacional de Robótica 2006. Guimarães, Portugal, April 2006, URI: https://tinyurl.com/yaujpczy
  39. [ViLoBaFo2005]
    J. M. N. Vieira, S. I. Lopes, C. A. C. Bastos, P. N. Fonseca, “Sistema de localização mútua para robots utilizando ultra-sons”. In 3as Jornadas de Engenharia Electrónica e Telecomunicações e de Computadores – JETC05. Lisboa, Portugal, Novembro 2005, URI: https://tinyurl.com/yag6vn4p

Technical Reports (3)

  1. [TR_Lopes2017]
    S. I. Lopes, “Estratégia e boas práticas na gestão de projetos de I&D+I no IPVC”, Final Report, Project Management PG, PBS – Porto Business School (PBS), Universidade do Porto, Dezembro 2017.
  2. [TR_Lopes2009]
    S. I. Lopes    , “Segurança no internamento pediátrico do HSM: Análise das soluções tecnológicas alternativas”, Relatório Técnico, Hospital de São Marcos, Braga, Junho de 2009.
  3. [TR_LoVe2004]
    S. I. Lopes, F. Ventura, “Intercomunicador Digital de Imagem e Som sem Fios”, Final Project Report, DETI, Universidade de Aveiro, Junho 2004, URI:     https://tinyurl.com/y6b56jke
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