Articles tagged Two-column

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khaled

Studying Quantum Dots using Atomic Force Microscopy
Quantum Dots are semiconductor nanocrystals whose diameter is in the range of 2-10 nm, corre- sponding to 10 to 50 atoms in diameter and a total of 100 to 100,000 atoms within the quantum dot volume. Many types of quantum dot emit light of specific frequencies if electricity or light is applied to them, and these frequencies can be precisely tuned by changing the dots’ size, shape and material, giving rise to many applica- tions. Because of their high tunable properties, quantum dots are of wide interest. It finds its applications in nanotechnology, medical imaging, transistors, solar cells, LED’s, diode lasers, quantum computing, etc. With this project, we intend to further understand and study the properties of quantum dots by using atomic force microscopy.
Anand Dwivedi

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

Transferencia de calor en intercambiadores de pasos múltiples
Transferencia de calor en intercambiadores depasos múltiples
Jimena Acosta E.

SecurePost - An Android Tool for Trusted Social Media Posts
his project is part of the FlowNet initiative.
FlowNet aims at providing Internet freedom and free flow
information through socially informed, censor resistant online
social networks. My contribution for FLowNet is in devel-
oping an Android application, SecurePost. The requirement
for SecurePost is two-fold. First, the system should facilitate
secure, anonymous, group communication within a closed
group of trusted members. Second, the general public on the
Internet viewing this content, should be able to verify that the
content was generated only by the said closed group of trusted
members. The system consists of an Android client application,
a proxy server and a browser-plugin. The OSNs supported by
this system are Twitter and Facebook.
pritha

GOMOKU & Minimax-alphabeta search
Gomoku is an abstract strategy board game, also called Omok or Five in a Row. This paper explains the implementation of an AI with minimax alpha-beta search with a sequences pattern recognition.
Nikolai Shevchenko

Persistencia Políglota Caso de estudio: MongoDB y Neo4j
Con el auge de los sistemas de bases de datos NoSQL los cuales implementan modelos de datos diferentes al relacional como son las bases de datos documentales o de grafos, ha surgido el concepto de Persistencia Políglota. Ésta sostiene que debido a la gran variedad y cantidad de representación de los datos, y los diversos servicios que pueden dar las aplicaciones hoy en día; es necesario el uso de más de un tipo de sistema de almacenamiento para ser capaz de cubrir de forma eficiente todas las necesidades de la aplicación que use dicho sistema. En este trabajo se busca dar una idea general de las Aplicaciones de Persistencia Políglota describiendo las posibles arquitecturas que hacen uso de las bases de datos NoSQL y su funcionamiento, se estudian algunos casos de éxito y se lleva a cabo un caso de estudio usando MongoDB y Neo4j.
Jesús Arévalo, Jefferson Santiago, Luinel Andrade

Examen de Ampliación - Electrónica III (final)
En este trabajo se implementaron diferentes topologías de circuitos rectificadores, profundizando en el concepto de factor de potencia, evaluando el factor de potencia en las diferentes topologías utilizando ecuaciones matemáticas y simulaciones por software de computadora (TINA). Concluyendo que el circuito rectificador con uso del convertidor Boost, mejora la distorsión armónica total con respecto a las otras topologías evaluadas, siendo el aporte de la armónica fundamental mayor que las otras armónicas, obteniendo una corrección en el factor de potencia.
David

Peter J's CV
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Peter J