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L'Amor al món medieval
L'Amor al món medieval
Breu resum sobre l'amor al món medieval. Basat en apunts de l'assignatura de la UB.
Muntsa Moral
Tensão de saída (Canal 2) e onda de tensão PWM (Canal 1), dados para tensão entrada de 23V.
Tensão de saída (Canal 2) e onda de tensão PWM (Canal 1), dados para tensão entrada de 23V.
Este artigo tem como objetivo relatar e detalhar a construção de um conversor buck-boost. Cuja a função deste é converter uma tensão cc (corrente contínua) de entrada, em outra tensão cc em sua saída, de valor mais elevado ou inferior dependendo de sua configuração. Destaca-se aqui o uso de um semi condutor MOSFET que funciona como uma chave controladora. Na elabiração deste está destacada o funcionamento, principais características e toda a parte de simulação e comprovação prática deste conversor.
Elison Moreira & Leandro Pereira
The summation of all prime numbers
The summation of all prime numbers
A proof is given that the summation of all prime numbers can be assigned the value of 13/12, as well as values that can be assigned to the summation of all multiples and all odd multiples.
Fernando Franco Félix
El Laberinto en la Metodologia de la Diferencia Temporal
El Laberinto en la Metodologia de la Diferencia Temporal
La solucion a un problema dado consiste en encontrar un camino desde un nodo representando el estado inicial, hasta el estado final deseado.
grupos5j
Household daily-peak electricity load forecasting with statistical models
Household daily-peak electricity load forecasting with statistical models
This article proposes to obtain a statistical model of the daily peak electricity load of a household located in Austin-TX,USA. The Box-Jenkins methodology was followed to obtain the best fit for the time-series. Four models provided a good fit: ARIMA(0,1,2), ARIMA(1,1,2), SARIMA(0,1,2)(0,1,1) and SARIMA(1,1,2)(0,1,1). The model with the highest Akaike Information Criteria was the ARIMA(1,2,2). However, the model with the highest forecast accuracy was the SARIMA(1,1,2)(0,1,1), which obtained an RMSE of 0.296 and a MAPE Of 15.00.
Luciano Viola
Report no cover
Report no cover
Report without cover page Created by Zengjie Xia on 30/01/2018. Copyright © 2018 Zengjie Xia. All rights reserved.
Zengjie Xia
The Noscuk
The Noscuk
Let's take a look into the dynamic history of the Noscuk valley and its people.
Eugenia Anane-Wae
Where are our Providers?: Image Clustering based on Locations of Brazilian Government Suppliers
Where are our Providers?: Image Clustering based on Locations of Brazilian Government Suppliers
The Observatory of Public Spending (or ODP, in Portuguese) is a special unit of Brazil's Ministry of Transparency, Monitoring and Office of the Comptroller-General (or CGU, in Portuguese) responsible for monitoring public spending and gathering managerial and audit information to support the work of CGU internal auditors. One of the most important themes monitored by this unit is Public Procurements and Government Suppliers which have won these procurement processes. Image analysis of many of these suppliers headquarters revealed suspicious landscapes, such as rural areas, isolated places or slums. These landscapes could be an indication of fake suppliers with poor capacity of delivering public goods and services. However, checking thousands of landscapes in order to find these fake suppliers would be a very expensive task. Our objective then is to discover what are the possible groups of scenes involving government suppliers, given that these images were not previously labeled, as automatically as possible. For that reason, we used Places CNN, a pretrained convolutional neural network for scene recognition presented by Zhou et al., which was trained on 205 scene categories with 2.5 million images, for scene recognition on Brazilian Government Suppliers.
Rodrigo Peres Ferreira
Análisis y Oportunidades de Mejora en E-commerce
Análisis y Oportunidades de Mejora en E-commerce
Año a año, según el índice de ventas online aumenta el consumo de losclientes en medios de compra no presencial.Las tendencias mundiales indican que los consumidores están cambiandosus patrones de compra, prefiriendo cada vez mas los canales de compra on-line, por sobre las tiendas físicas y Chile, no está al margen de esta tendencia.Por lo tanto, cada vez cobra más importancia contar con plataformas webque hagan la compra expedita. Cerca de un 15% de las ventas se hacen deforma online en Chile. Entoncesm aún queda mucho por mejorar y proba-blemente, en la a medida que mejore la calidad de servicio en la venta onlineeste porcentaje irá aumentando.
Bruno Gomez

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