Search
Now showing items 1-10 of 77
Estudo de algoritmos de aprendizado de máquina na predição de apneia do sono por sinais de EEG
(Universidade Federal de Santa Maria, 2022-02-17)
Sleep apnea is a sleep disorder characterized by partial or total obstruction of airflow in the respiratory
tract. This leads to reduced blood oxygenation, inducing awakening. In the long term, it
leads the person to ...
Desenvolvimento de uma plataforma equatorial de baixo custo para astrofotografia
(Universidade Federal de Santa Maria, 2022-06-23)
Currently, astrophotography remains practiced by large telescopes and also by astropho-
tographers that have countless challenges. The main one relies on the fact that celestial
bodies, in general, demand long exposure ...
Projeto e análise de moduladores Sigma-delta em tempo contínuo em tecnologias CMOS
(2014-12-05)
This work presents the design of a continuous time sigma-delta modulator with a 0.2
MHz signal bandwidth and 78 dB signal-to-noise ratio (SNR), which are the specifications for
the GSM standard. Three single-loop, ...
Implementação de um sistema de aquisição e processamento de sinais de oximetria com comunicação bluetooth e software de monitoramento
(Universidade Federal de Santa Maria, 2015-11-10)
The present work introduces a study and implementation of a data acquisition and data processing system of oximetry signals from a pulse oximeter. This device provides information about the percentage of arterial oxygen ...
Análise do gráfico de controle CUSUM para a filtragem de sinais utilizando coeficientes wavelet
(Universidade Federal de Santa Maria, 2018)
The Fourier transform has long been one of the few available signal processing options.
However, in the last decades different types of transform have become efficient alternatives
for filtering, compression and other ...
Análise da correção do erro ionosférico em receptores GPS de frequência simples a partir da implementação do algoritmo de Klobuchar em Python
(Universidade Federal de Santa Maria, 2021-02-17)
The Selective Availability (SA) technique was deactivated on May 2, 2000, since then the biggest
source of errors in positioning with the Global Positioning System (GPS) has come to be
related to the ionosphere. The ...
Projeto de um filtro Gm-C aplicado a neuroestimuladores utilizando uma nova topologia de transcondutor
(Universidade Federal de Santa Maria, 2015-07-09)
This graduation project presents the design of a filter Gm-C applied to stimulation systems, particularly
in the measurement of residual charges. The filter proposal is based on using a new concept of
transcondutor called ...
Estudo do impacto da implementação de um escalonador em uma arquitetura multiprocessada com núcleos heterogêneos
(Universidade Federal de Santa Maria, 2015-12-18)
Heterogeneous multiprocessor architectures are becoming an increasingly coveted study’s object due to its advantages compared to homogeneous multiprocessor architectures, such as better hardware utilization and lower on-chip ...
Acoplamento e validação funcional do sistema reconfigurável DIM
(Universidade Federal de Santa Maria, 2014-12-11)
Reconfigurable architectures have been widely employed to speedup applications by
exploiting instruction level parallelism, appearing as an alternative to replace the power-hungry circuits of superscalar processors. The ...
Explorando a união entre memória de contextos e de instruções de uma arquitetura reconfigurável visando a redução de área e consumo de potência em sistemas embarcados
(Universidade Federal de Santa Maria, 2014-01-17)
In this work, a new structure of memory for reconfigurable architectures, emerging solutions
for embedded systems, has been developed. The new memory, called Unified Memory,
try to merge reconfiguration contexts and ...