•  Impacto do Desvanecimento do Sinal na Qualidade de uma Comunicação VoIP.

Emmanuel Tavares Ferreira Affonso ; ZEGARRA RODRÍGUEZ, DEMÓSTENES . .

In: Simpósio Brasileiro de Telecomunicações, 2016, Santarém- Pará. Simpósio Brasileiro de Telecomunicações - SBrT, 2016.

• Improving the performance of a non-intrusive metric of voice quality assessment considering IP network parameters.

PEREIRA, C. H. ; NUNES, R. D. ; OLIVEIRA, T. C. A. ; Renata Rosa ; RODRIGUEZ, D. Z. .

In: SBrT, 2015, Juiz de Fora. Sociedade Brasileira de Telecomunicações, 2015.

• Análise Afetiva de Frases Extraídas das Redes Sociais.

Renata Rosa ; ZEGARRA RODRÍGUEZ, DEMÓSTENES ; Graça Bressan .

In: Simpósio Brasileiro de Tecnologia da Informção, 2014, Maceió/Alagoas. III Simpósio Brasileiro de Tecnologia da Informção, 2014.

• Improving the Minimization Drive Tests using Voice Quality Index

ZEGARRA RODRÍGUEZ, DEMÓSTENES; BRESSAN, GRAÇA .

In: International Workshop on Telecommunications, 2013, Minas Gerais. IWT 2013. Minas Gerais: INATEL, 2013. v. 1. p. 10-13.

• Predicting the Quality Level of a VoIP Communication through Intelligent Learning Techniques.

ZEGARRA RODRÍGUEZ, DEMÓSTENES; LOPES ROSA, RENATA ; BRESSAN, GRAÇA .

In: ICDS 2013, The Seventh International Conference on Digital Society, 2013, Nice. ICDS 2013, 2013. p. 42-47.

• Business Model for Video Transmission Services using Dynamic Adaptation Streaming over HTTP

ZEGARRA RODRÍGUEZ, DEMÓSTENES; LOPES ROSA, RENATA ; BRESSAN, GRAÇA . A .

In: AICT 2013, The Ninth Advanced International Conference on Telecommunications, 2013, Rome. AICT 2013, 2013. p. 60-70.

• SentiMeter-Br: Facebook and Twitter Analysis Tool to Discover Consumers' Sentiment.

ROSA, RENATA LOPES ; RODRIGUEZ, DEMOSTENES ZEGARRA ; BRESSAN, GRAÇA .

In: AICT 2013, The Ninth Advanced International Conference on Telecommunications, 2013, Rome. AICT 2013, 2013. p. 60-65.

• Proposal of a New Voice Quality Indicator for the Brazilian Mobile Telecommunications System based on the End User Quality Experience.

Jackson Sousa ; RODRIGUEZ, D. Z. ; André Cavalcante .

In: Conatel, 2011, Arequipa. Conatel, 2011.

• Avaliação da Qualidade de uma Comunicação VoIP em uma rede WLAN real com diferentes Modelos de Desvanecimento.

Gabriel Pivaro ; RODRIGUEZ, D. Z. ; Graça Bressan .

In: XXIX Simpósio Brasileiro de Telecomunicações, 2011. XXIX Simpósio Brasileiro de Telecomunicações SBrT, 2011.

• Recommendation system based on user profile extracted from an IMS network with emphasis on social network and digital TV

ROSA, RENATA LOPES ; RODRÍGUEZ, DEMÓSTENES ZEGARRA ; DE SOUSA JUNIOR, VICENTE ANGELO ; BRESSAN, GRAÇA . .

In: the 6th Latin America Networking Conference, 2011, Quito. Proceedings of the 6th Latin America Networking Conference on - LANC '11. New York: ACM Press. p. 40.

• Avaliação do Índice de Qualidade de Voz em Redes Móveis Celulares Baseada na Percepção dos Usuários.

Jackson Sousa ; RODRIGUEZ, D. Z. ; Gabriel Pivaro ; Graça Bressan .

In: XXIX Simposio Brasileiro de Telecomunicações, 2011, Curitiba. XXIX Simposio Brasileiro de Telecomunicações, 2011.

• Video Quality Assessment on Digital TV and Video Streaming services using Objective Metrics.

RODRIGUEZ, D. Z.; Graça Bressan .

In: I2TS, 2011, Florianopolis. I2TS Conference.

• Health Recommendation System based on Cellular Network in a Secure Way.

RODRIGUEZ, D. Z.; Renata Rosa .

In: PLD / IASTED, 2010, California. IASTED, 2010.

• Analysis of Security and Penetration Tests for Wireless Networks with Backtrack Linux.

Renata Rosa ; RODRIGUEZ, D. Z. ; Gabriel Pivaro ; Jackson Sousa .

In: 9th International Information and Telecommunication Technologies Symposium, 2010. 9th International Information and Telecommunication Technologies Symposium, 2010.

• Storage and Handling of health parameters in Cloud Computing using cellular networks.

RODRIGUEZ, D. Z.; Renata Rosa .

In: IEEELatincom, 2010, Bogota. IEEELatincom, 2010.

• Recommendation System Based on Location and Presence Information of Users in a Mobile Network

Zegarra, Demóstenes; SOUSA, JACKSON ; FARIA, BRUNO ; ALFAIA, EDUARDO . .

In: 2010 Fifth International Conference on Digital Telecommunications (ICDT), 2010, Athens. 2010 Fifth International Conference on Digital Telecommunications.

• A Simple Method to Measure the Image Complexity on a Fault Tolerant Cluster Computing

RODRÍGUEZ, DEMÓSTENES ZEGARRA; ROSA, RENATA LOPES ; ALFAIA, EDUARDO COSTA . In: , 2010, Barcelona. . p. 549-554.

• New Cache System-Based Power-Aware Algorithm in MANET.

RODRÍGUEZ, DEMÓSTENES ZEGARRA; ROSA, RENATA LOPES ; LIMA, PEDRO HÉLIO MEDEIROS DE .

In: 2010 Fifth International Conference on Digital Telecommunications (ICDT), 2010, Athens. 2010 Fifth International Conference on Digital Telecommunications. p. 86-91.

• VoIP Quality Improvement with a Rate-determination Algorithm.

RODRIGUEZ, D. Z.; RAMIREZ, M. A. .

In: INTERNATIONAL WORKSHOP ON TELECOMMUNICATIONS, 2009, SP. Proceedings of IWT 2009 International Workshop on Telecommunications, 2009.

• Avaliação de um Algoritmo de Determinação da Taxa de Codificação baseado na qualidade do sinal de voz em uma rede IP emulada.

RODRIGUEZ, D. Z.; Miguel Arjona Ramirez .

In: XXVII SIMPÓSIO BRASILEIRO DE TELECOMUNICAÇÕES, 2009, Blumenau. XXVII SIMPÓSIO BRASILEIRO DE TELECOMUNICAÇÕES.

• Avaliação da Qualidade de uma Comunicação VoIP em uma Rede Ethernet LAN e WLAN.

Felipe Silva ; RODRIGUEZ, D. Z. .

In: XXVII SIMPÓSIO BRASILEIRO DE TELECOMUNICAÇÕES, 2009. XXVII SIMPÓSIO BRASILEIRO DE TELECOMUNICAÇÕES.

• Implementation and Analysis of a Simple Method to Measure Image Complexity on Cluster computing

RODRIGUEZ, D. Z.; Pedro Lima ; Renata Rosa ..

In: 8th Inbternational Information and Telecommunication Technologies Symposium, 2009, Florianopolis. 8th Inbternational Information and Telecommunication Technologies Symposium, 2009.

• Mecanismo de Coleta de dados para um Sistema de Recomendação, segundo Perfiis de Assinantes de Celulares com o uso de Mensagens Cell Broadcast

RODRIGUEZ, D. Z.; Renata Rosa ; Jackson Sousa ; Mirel Pina . .

In: 8th Inbternational Information and Telecommunication Technologies Symposium, 2009, Florianopolis. 8th Inbternational Information and Telecommunication Technologies Symposium, 2009.

• Análise de performance dos protocolos WRP, ZRP, AODV e DSR em ambiente móvel sem fio com a implementação de um sistema de cache

RODRIGUEZ, D. Z.; Correa Andre ; Miguel Arjona Ramirez . .

In: XXVII Simposio Brasileiro de Telecomunicações, 2009, Blumenau. XXVII Simposio Brasileiro de Telecomunicações, 2009.

• Determinação do comportamento de codificadores em diferentes condições de rede em cenário experimental

RODRIGUEZ, D. Z.; RAMIREZ, M. A. . l.

In: XXVI Simpósio Brasileiro de Telecomunicações (SBrT''08), 2008, RJ. Anais do XXVI Simpósio Brasileiro de Telecomunicações (SBrT''08).

• Determinação do fator de degradação do codificador do E-Model em um cenário de rede experimental

RODRIGUEZ, D. Z.; RAMIREZ, M. A. . .

In: 7a. Conferencia Iberoamericana en Sistemas, Cibernética e Informática, 2008, Florida. Anais da 7a. Conferencia Iberoamericana en Sistemas, 2008.

• Video quality subjective assessment considering cognitive criteria and user preferences on video content.

ZEGARRA RODRÍGUEZ, DEMÓSTENES; ABRAHÃO, JÚLIA ; COAQUIRA BEGAZO, DANTE ; LOPES ROSA, RENATA ; BRESSAN, GRAÇA .

In: the 18th Brazilian symposium, 2012, Sao Paulo/SP. Proceedings of the 18th Brazilian symposium on Multimedia and the web - WebMedia '12. New York: ACM Press, 2012. p. 269-272.

• Real-time evaluation of speech quality in mobile communication services

DANTAS NUNES, RODRIGO ; PEREIRA, CARLOS HENRIQUE ; ROSA, RENATA LOPES ; RODRIGUEZ, DEMOSTENES Z. . .

In: 2016 IEEE International Conference on Consumer Electronics (ICCE), 2016, Las Vegas. 2016 IEEE International Conference on Consumer Electronics (ICCE), 2016. p. 389.

• Monitoring system for potential users with depression using sentiment analysis

ROSA, RENATA L. ; RODRIGUEZ, DEMOSTENES Z. ; SCHWARTZ, GISELE M. ; DE CAMPOS RIBEIRO, IVANA ; BRESSAN, GRACA . .

In: 2016 IEEE International Conference on Consumer Electronics (ICCE), 2016, Las Vegas. 2016 IEEE International Conference on Consumer Electronics (ICCE), 2016. p. 381.

• Uso do Arduíno como recurso tecnológico em aulas de Eletrônica

ZEGARRA RODRÍGUEZ, DEMÓSTENES; LOPES ROSA, RENATA ; BRESSAN, Graça . .

In: 2º Congresso de Graduação da USP, 2016, Piracicaba. 2º Congresso de Graduação da USP, 2016.

• O uso da Análise de Sentimentos em Learning Analytics

LOPES ROSA, RENATA ; ZEGARRA RODRÍGUEZ, DEMÓSTENES ; BRESSAN, Graça . .

In: 2º Congresso de Graduação da USP, 2016, Piracicaba. 2º Congresso de Graduação da USP,, 2016.

• Estudo da Distribuição Temporal das Perdas de Pacotes e o Seu Impacto na Qualidade de Voz

PEREIRA, C. H. ; ZEGARRA RODRÍGUEZ, DEMÓSTENES . .

In: Simpósio Brasileiro de Telecomunicações, 2016, Santarém - Pará. Simpósio Brasileiro de Telecomunicações - SBrT, 2016.

• Voice quality assessment in mobile devices considering different fading models.

AFFONSO, EMMANUEL T. ; RODRIGUEZ, DEMOSTENES Z. ; ROSA, RENATA L. ; ANDRADE, THIAGO ; BRESSAN, GRACA .

In: 2016 IEEE International Symposium on Consumer Electronics (ISCE), 2016, Sao Paulo. 2016 IEEE International Symposium on Consumer Electronics (ISCE). p. 21.

• No-reference video quality metric based on the packet delay variation parameter

BEGAZO, DANTE COAQUIRA ; RODRIGUEZ, DEMOSTENES ZEGARRA ; RAMIREZ, MIGUEL ARJONA . .

In: 2016 IEEE International Symposium on Consumer Electronics (ISCE), 2016, Sao Paulo. 2016 IEEE International Symposium on Consumer Electronics (ISCE). p. 83.

• Fault tolerant WANET through direction-biased Gossip associated with a Quorum system.

RODRIGUEZ, DEMOSTENES ZEGARRA; BRESSAN, GRACA ; ROSA, RENATA LOPES .

In: 2016 IEEE International Symposium on Consumer Electronics (ISCE), 2016, Sao Paulo. 2016 IEEE International Symposium on Consumer Electronics (ISCE). p. 19.

• Recommendation system using sentiment analysis considering the polarity of the adverb.

GUIMARAES, RITA ; RODRIGUEZ, DEMOSTENES Z. ; ROSA, RENATA L. ; BRESSAN, GRACA . In: 2016 IEEE International Symposium on Consumer Electronics (ISCE), 2016, Sao Paulo. 2016 IEEE International Symposium on Consumer Electronics (ISCE). p. 71.

• Impact of the linear phase variations on the voice quality index.

ABREU, DOUGLAS H. S. ; RODRIGUEZ, DEMOSTENES Z. ; LACERDA, WILIAN S.

.In: 2016 IEEE International Symposium on Consumer Electronics (ISCE), 2016, Sao Paulo. 2016 IEEE International Symposium on Consumer Electronics (ISCE). p. 33.

• No-reference video quality metric for streaming service using DASH standard.

RODRIGUEZ, DEMOSTENES ZEGARRA; ROSA, RENATA LOPES ; BRESSAN, GRACA .

In: 2015 IEEE International Conference on Consumer Electronics (ICCE), 2015, Las Vegas. 2015 IEEE International Conference on Consumer Electronics (ICCE). p. 106.

• Music recommendation system based on user's sentiments extracted from social networks

ROSA, RENATA LOPES ; RODRIGUEZ, DEMOSTENES ZEGARRA ; BRESSAN, GRACA . .

In: 2015 IEEE International Conference on Consumer Electronics (ICCE), 2015, Las Vegas. 2015 IEEE International Conference on Consumer Electronics (ICCE), 2015. p. 383.

• Impacto dos parâmetros STZCR e STE em uma comunicação VoIP com perda de pacotes.

PEREIRA, C. H. ; ARANDA, A. S. ; RODRIGUEZ, D. Z. .

In: SBrT, 2015, Juiz de Fora. Sociedade Brasileira de Telecomunicações, 2015.

• Video quality assessment in video streaming services considering user preference for video content.

RODRIGUEZ, DEMOSTENES ZEGARRA; ROSA, RENATA LOPES ; BRESSAN, GRACA .

In: 2014 IEEE International Conference on Consumer Electronics (ICCE), 2014, Las Vegas. 2014 IEEE International Conference on Consumer Electronics (ICCE), 2014. p. 570-571.

• A billing system model for voice call service in cellular networks based on voice quality.

RODRIGUEZ, DEMOSTENES ZEGARRA; ROSA, RENATA LOPES ; BRESSAN, GRACA .

In: 2013 IEEE 17th International Symposium on Consumer Electronics (ISCE), 2013, Hsinchu City. 2013 IEEE International Symposium on Consumer Electronics (ISCE), 2013. p. 89.

• SentiMeter-Br: A new social web analysis metric to discover consumers' sentiment.

ROSA, RENATA LOPES ; RODRIGUEZ, DEMOSTENES ZEGARRA ; BRESSAN, GRACA .

In: 2013 IEEE 17th International Symposium on Consumer Electronics (ISCE), 2013, Hsinchu City. 2013 IEEE International Symposium on Consumer Electronics (ISCE), 2013. p. 153.

• SentiMeter-Br: A Social Web Analysis Tool to Discover Consumers' Sentiment.

ROSA, RENATA LOPES ; RODRIGUEZ, DEMOSTENES ZEGARRA ; BRESSAN, GRACA .

In: 2013 14th IEEE International Conference on Mobile Data Management (MDM), 2013, Milan. 2013 IEEE 14th International Conference on Mobile Data Management, 2013. p. 122.

• A proposed video complexity measurement method to be used in a cluster computing.

ZEGARRA RODRIGUEZ, DEMOSTENES; ROSA, RENATA LOPES ; BRESSAN, GRACA .

In: 2013 IEEE Global High Tech Congress on Electronics (GHTCE), 2013, Shenzhen. 2013 IEEE Global High Tech Congress on Electronics, 2013. p. 76-77.

• Performance assessment of High Efficiency Video Coding - HEVC

ZEGARRA RODRIGUEZ, DEMOSTENES; BRESSAN, GRACA .

In: 2013 IEEE Global High Tech Congress on Electronics (GHTCE), 2013, Shenzhen. 2013 IEEE Global High Tech Congress on Electronics, 2013. p. 110-111.