Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Alvaro Augusto Almeida de Salles"'
Publikováno v:
IEEE Access, Vol 3, Pp 2425-2430 (2015)
As children develop, they differ from adults in a number of important ways, including anatomy, metabolism, immune system, and the extent of myelination of the nervous system. As a consequence, equivalent exposures to radiation from mobile phones resu
Externí odkaz:
https://doaj.org/article/5de916945a714b96a1c3545124eeaf6b
Publikováno v:
Journal of Control, Automation and Electrical Systems. 31:935-947
Industrial WSNs are gradually gaining space in industry due to low cost of installation and maintenance. However, RF communications systems are prone to several propagation phenomena which can compromise reliability in terms of missed message deadlin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed5ca6143ad0ad44395f2a40f1ae185b
https://doi.org/10.1007/s40313-020-00614-8
https://doi.org/10.1007/s40313-020-00614-8
Autor:
Johan L. T. Garzon, Carlos Eduardo Pereira, Jean Michel Winter, Alvaro Augusto Almeida de Salles, Ivan Muller
Publikováno v:
Physical Communication. 31:28-39
Cognition into wireless sensors is a current paradigm to improve the performance of wireless sensor networks (WSN) and the efficient use of the radio frequency spectrum. The classic static allocation of the radio frequency bands causes coexistence pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94f4ec0be2d06741e59409c9f14edbbe
https://doi.org/10.1016/j.phycom.2018.09.001
https://doi.org/10.1016/j.phycom.2018.09.001
Autor:
Geraldo Fulgencio, Claudio Enrique Fernandez-Rodriguez, Giovani Bulla, Norton Soares, Alvaro Augusto Almeida de Salles
Publikováno v:
2021 15th European Conference on Antennas and Propagation (EuCAP).
This is a review paper on planar directional antennas designed to reduce the Specific Absorption Rate (SAR) in the head and body of wireless device users. Metamaterials such as Artificial Magnetic Conductors (AMC) and Electromagnetic Band Gap structu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::239b8f36a16a9773e4266bccf30fc5ff
https://doi.org/10.23919/eucap51087.2021.9411305
https://doi.org/10.23919/eucap51087.2021.9411305
Autor:
Sandro Roberto Araújo, Carlos Eduardo Pereira, Christian Alan Krötz, Ivan Muller, Joao C. Netto, Alvaro Augusto Almeida de Salles
Publikováno v:
Proceedings XXII Congresso Brasileiro de Automática.
Este artigo concentra-se no aumento da robustez a taxa de erros em redes de sensores sem fio industriais (RSSFI). Para alcancar tais objetivos, e preciso, de algum modo, contornar e combater os problemas intrinsecos a comunicacao sem fio, que sao: o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e135775a9e1621ca6b850254412531a5
https://doi.org/10.20906/cps/cba2018-1349
https://doi.org/10.20906/cps/cba2018-1349
Publikováno v:
Repositório Institucional da UFRGS
Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
As children develop, they differ from adults in a number of important ways, including anatomy, metabolism, immune system, and the extent of myelination of the nervous system. As a consequence, equivalent exposures to radiation from mobile phones resu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c3adac98a53d02d4fad9e9192d7165b
https://doi.org/10.1109/access.2015.2502900
https://doi.org/10.1109/access.2015.2502900
Publikováno v:
LATINCOM
In this paper, we have proposed a novel passive ultra high frequency (UHF) radio frequency identification (RFID) metal tag antenna mountable on the metallic surface to resonate at 930 MHz. The techniques with double slits for impedance matching and r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b8b5a9bfa21c5f31d4d11b0255c62edf
https://doi.org/10.1109/latincom.2017.8240165
https://doi.org/10.1109/latincom.2017.8240165
Publikováno v:
2016 IEEE MTT-S Latin America Microwave Conference (LAMC).
Specific absorption rate (SAR) simulation may be used to assess exposure levels, health risk and compliance with recommendations of wireless devices EMF exposure limits. When developing a numerical model of a human head the segmentation system decide
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9baa8673bf0a36ba06ccbbc248bd8b83
https://doi.org/10.1109/lamc.2016.7851256
https://doi.org/10.1109/lamc.2016.7851256
Autor:
Johan L. T. Garzon, Ivan Muller, Carlos Eduardo Pereira, Alvaro Augusto Almeida de Salles, Juliana Borges Ferreira
Publikováno v:
LATINCOM
A method for dynamic selection of channel in a wireless sensor network is presented in this paper. It is a simple cognitive mechanism to learn the behavior of operational band and to access channels with lower interference levels. The method is evalu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44c4287d69bfb79507ce46ac498b754b
https://doi.org/10.1109/latincom.2016.7811598
https://doi.org/10.1109/latincom.2016.7811598
Publikováno v:
LANC
This paper shows the design of a novel compact Planar Inverted F antenna (PIFA) for Ultra-High Frequency (UHF) band passive radio frequency identification (RFID) tag. The antenna is designed to operate at 915 MHz frequency. Electromagnetic simulation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1a4672353fb5e9a2b164599422e2798
https://doi.org/10.1145/2998373.2998449
https://doi.org/10.1145/2998373.2998449