Navegando por Assunto "Perfomance"

Agora exibindo 1 - 5 de 5

Acesso aberto (Open Access)
Análise e desempenho de tráfego triple play em redes PLC de baixa tensão
(Universidade Federal do Pará, 2011-12-15) CARMONA, João Victor Costa; PELAES, Evaldo Gonçalves; http://lattes.cnpq.br/0255430734381362
This work is a performance analysis of triple play applications using Power Line Communication technology, making a targeted approach to quality of service and quality of experience. Presents results obtained in residential settings where the use of this technology as a last mile solution proves capable of implementation before the tests with transmission of VoIP calls, streaming high definition video and data. The concept of home network, connecting all the points of a house, has represented a new direction in defining a global standard, in which the transmission of data via the electrical wiring will be one of the technologies employed and the spotlight. Also shown will be evaluated performance metrics such as jitter, bandwidth, packet loss, PSNR, MOS, VQM, SSIM and their correlation.
Acesso aberto (Open Access)
Aplicação da lógica fuzzy para analisar o desempenho da logística de sustentabilidade em departamentos industriais
(Universidade Federal do Pará, 2021-08-23) MOURA, Ana Claudia Mota Castilho de; LEITE, Jandecy Cabral; http://lattes.cnpq.br/7279183940171317; QUARESMA, Sil Franciley dos Santos; http://lattes.cnpq.br/6860112313500088
Bearing in mind that the improvement of sustainable logistics activities tend to reduce social, environmental and economic impacts, models for measuring the level of sustainability as a support tool in decision making are increasingly relevant to the process of identifying companies/departments, which need sustainable best practice in order to mitigate costs or increase profit. The objective of the research is to analyze the performance of sustainability logistics in departments of three companies in the electronic segment. As a methodology to develop the research, a sustainable analysis is carried out using a Fuzzy inferences model, in order to consolidate an expert agent, who is able to measure or indicate the level of sustainability performance in the Human Resources (HR) departments. Heritage and Information Technology (IT), the data set for analysis and inference of the input and output variables are in line with the characteristics of activities and practices performed in each department. As a result, it was possible to identify an influence of the “Priority” variable as a function of “Performance”, in addition, company 1 in the electronic segment presented a performance of 87.6 for HR, 88.1 for IT and 65.5 for Equity with the level of “Performance” in Sustainability.
Acesso aberto (Open Access)
Drag o quê?: sociabilidades, resistências e comunicação no Movimento das Themonhas no NoiteSuja, em Belém
(Universidade Federal do Pará, 2020-06-30) FERREIRA, Emanuele Corrêa; VIEIRA, Manuela do Corral; http://lattes.cnpq.br/1758973354834768; https://orcid.org/0000-0003-2034-5359
This essay aimed to understand and analyze how the Drag culture constitutes the experience of the subject and their sociability, specifically in the Demonha’s movement, in the context of the NoiteSuja movement, a network created in Belém that brings together Drag Queens from the local artistic scene, how the Drag constitutes the experience and constructions of these subjects who perform Drag. From the Communication study area, with sociabilty category, performance, gender and digital social media. The research area was carried out from March to December 2018, covering the analysis of five NoiteSuja parties. Interviews were also conducted with a semi-structured script, with nine Demonhas Drags interlocutors. It was so analyzed how Demonhas, through practices of sociability and performances, articulate themselves in on-off-line networks, also group in their Haus and invest their bodies on the streets, in a Megazord of Demonhas, sharing agendas and resisting, in existences crossed by sanctions that tend to seek the normalization of their bodies and the denial of their lives.
Acesso aberto (Open Access)
Modelagem da perda de qualidade de videos H.264 em redes sem fio considerando perdas de PSNR e de frames
(Universidade Federal do Pará, 2019-08-16) CARMONA, João Victor Costa; CAVALCANTE, Gervásio Protásio dos Santos; http://lattes.cnpq.br/2265948982068382; BARROS, Fabrício José Brito; http://lattes.cnpq.br/9758585938727609
Multimedia applications have been growing in recent years; new consumptions like online games, video conference, video on demand and IP telephony are some of these. However, there is a greater prominence in the search related to videos and streaming, currently in high resolutions and mostly traffic over wireless networks, mainly due to the proliferation of mobile devices and significant increase of access networks, which make it more comfortable. Providing this information is easy. Thus, as an immediate consequence of this type of flow, there is a need for investments in techniques and mechanisms that provide the end user with the desired quality and satisfaction in the face of high definition content. This work aims to perform the modeling of video quality loss by analyzing their performance in various resolutions, specifically standards in HD and UHD, at 720p, 1080p and 2160p. In this sense, applying a correlation investigation between the metrics extracted from the videos, using Pearson’s correlation coefficient, and fundamentals of the area in question. Also proposing equations for quality loss modeling, based on analysis of metrics associated with packet loss, in which at the end of the study and according to notes made throughout the text, we used for the general modeling equation, the parameters of Loss of PSNR and Loss of Total Frames. The result obtained shows maximum values of RMSE and Standard Deviation of 0.793 dB and 0.810 dB, respectively, making the developed model very good for the tested video set and its resolutions.
Acesso aberto (Open Access)
As redes WLAN serão superadas? Um estudo de viabilidade de redes WLAN em densenets: uma análise baseada em QOS/QOE
(Universidade Federal do Pará, 2015-09-04) CASTILHO, Jessica Janile Monteiro de; ARAUJO, Jasmine Priscyla Leite de; http://lattes.cnpq.br/4001747699670004; FRANCÊS, Carlos Renato Lisboa; http://lattes.cnpq.br/7458287841862567
The proliferation of mobile devices like smartphones and tablets and the changes of user profile caused the exponentially growth of mobile data traffic. Which leads to an overload of network infrastructure responsible for disposing of this traffic. In order to mitigate or even solve this problem some possibility are presented, one of which is the offloading of traffic cellular networks. For this, two technologies have had greater relevance: Femtocell and WLAN. However, the use of Femtocell has been considered panacea. However there is the alternative of WLAN networks, which has a very large legacy infrastructure. In this sense, this work proposes a comparative study through discrete simulation, aiming to analyze the performance of our networks.