Community articles — University

Introduction to quantum mechanical effects and an implementation example of quantum key distribution

Trabalho voltado para a conclusão da disciplina Recursos Computacionais no Ensino da Matemática.

Eficiˆencia de sistema de telhado verde extensivo em precipita¸c˜oes extremas: an´alise quantitativa e efeitos na mitiga¸c˜ao de inunda¸c˜oes urbanas. Template downloaded from: http://www.latextemplates.com

In this paper we discuss how to price American, European and Asian options using a geometric Brownian motion model for stock price. We investigate the analytic solution for Black-Scholes differential equation for European options and consider numerical methods for approximating the price of other types of options. These numerical methods include Monte Carlo, binomial trees, trinomial trees and finite difference methods. We conclude our discussion with an investigation of how these methods perform with respect to the changes in different Greeks. Further analysing how the value of a certain Greeks affect the price of a given option.

Dieses Dokument enthält Notizen aus dem Kurs Mathematik 2 des Studienbefähigungslehrgangs 2014/15 der FH Joanneum Graz.

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.

Paper assignment. Template details: This template has been downloaded from: http://www.LaTeXTemplates.com Original author: Frits Wenneker (http://www.howtotex.com) License: CC BY-NC-SA 3.0 (http://creativecommons.org/licenses/by-nc-sa/3.0/)

Rapport du Projet Personnel en Humanités de Kévin Bulmé ayant pour sujet l'étude des bienfaits sociaux des jeux vidéo sur les personnes et la société.

solucion es alos efectos decorrosión en estructuras de concreto armado