Articles tagged University

Cluster of human spiral ganglion neurons: A computational model study of ephaptic coupling effects
Master Thesis Cochlear Implants Saburov Igor
Igor Saburov

Progress Report 1
Gearbox Progress Report
James

Choosing Adequate Speech Presence Probability Method for Enhanced Multichannel Background Noise Reduction Algorithms
There are several voice communication systems that are used nowadays which are capable of maintain voice calls between two users in real time. Telephones are widely used all around the world in an unlimited kind of situations. All of these situations expose the microphone (or microphones) of the phones to different and unpredictable noises, as street noise, sea noise, rain noise, wind noise, unwanted voices, car motors, etc. As microphones capture all the sounds around it, including the wanted voice and the unwanted noises, it is necessary to implement digital real time filters capable of attenuate as much as possible all the surrounding noises.
It exists a large quantity of noise reduction methods that have been used in the calling algorithms of phones. Even if these methods have had, in general, a good performance, there is still a research being done in this area in order to improve the current results. Because of this, the multichannel methods were created (using multiple microphones) as well as new algorithms that pretend to have a better noise reduction than the single channel methods. Most of these methods require a speech presence probability (SPP) method to achieve the noise reduction.
The following document presents a research about different SPP methods as well as a comparison between these. This includes an explanation on how theses algorithm work, a Matlab implementation using real voice and noise recordings and objective tests of the filter.
ivan

Trabalho de Sistemas Distribuídos
Este trabalho tem a missão de explicar alguns temas de sistemas distribuídos, estes
sistemas são fundamentais para a comunicação, integração e processamento de dados via
internet ou rede local. Ao longo do trabalho abordaremos os principais tópicos tais como:
WebServices, Padrões de Sockets entre outros.
Cassio Ferraz

Trabalho Sistemas Distribuidos
Trabalho Sistemas Distribuidos
Daniel Nicolay

Iteration of Matrices and the Fibonacci Sequence
We examine repeated iteration of various matrices from a graphical view, plotting each iterate vector for numerous randomly chosen initial values.
Then we examine a specific matrix and how why it generates the Fibonacci sequence.
Tyler Murphy

Semen Sample Under the Microscope
The objective of thiss experiment is to examine how a semen sample will look like under a microscope and to scale it and
take the its measurements.
Karim Abdelmomen

Ejercicios en LaTeX
Mathematic homework exercise in LaTeX
Alvaro Polo Ulloque

TCC - Recomendação de música para grupo de pessoas
Research about recommendation systems has increased due to the amount of information that it is available to individuals. In the music context these systems help the individual to filter and discover new songs according the individual's taste. Most of the business music companies use a recommendation system, based on the characteristics of a song listened by an individual, but a group recommendation system is still underexplored. For a shared environment when there is music, the songs selection will be more efficient if a group recommendation system is used. The goal of this project is to develop a music recommendation for a group that, is sharing the same environment, taking into consideration the context. For this reason, in this work we will employ the Spotify API to recover the data of playlists that were listened by an individual, collecting its preferences and adding them to the others individuals playlists.
João Gabriel Bracaioli