PostGIS - Conhecendo o Elefante Geoespacial
Workshop de PostGIS que ministrei com o Ignacio Talavera (IMM - Intendencia de Montevideo) no V CONSEGI (Congresso Internacional Software Livre e Governo Eletrônico):
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Carga Geoespacial de Municípios do IBGE
Neste artigo vamos mostrar como importar para um banco de dados PostgreSQL dotado da extensão espacial PostGIS os shapefiles e atributos da Malha Digital dos Municípios de 2010 fornecida pelo IBGE....
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Carga Geoespacial de Estados do IBGE
Atenção: recomenda-se a prévia leitura do primeiro artigo, Carga Geoespacial de Municípios do IBGE, uma vez que conceitos e artefatos explorados nele são pré-requisitos para o presente estudo. No...
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Especialista em PostgreSQL?
Você pode ser considerado especialista no SGBD PostgreSQL se......já instalou e configurou o PostgreSQL em pelo menos três plataformas distintas (ex: Linux, Windows, Mac OS, *BSD, Solaris, Mainframe,...
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TV Serpro - Conectado: banco de dados espaciais PostGIS
Na primeira edição do programa Conectado da TV Serpro, discuto sobre o funcionamento do banco de dados espaciais PostGIS.
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pgAFIS: o Elefante Biométrico
Tecnologias biométricas são cada vez mais empregadas em aplicações civis. Um exemplo disso é que nas eleições deste ano, 21,6 milhões de brasileiros (15% do total de eleitores do país) em 762...
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pgAFIS: Biometric Elephant
Biometric technologies are increasingly used in civilian applications. One example is that in the 2014 elections, 21.6 million Brazilians (15% of the country's voters) in 762 municipalities (including...
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Evaluating NIST Biometric Image Software (NBIS) using FVC2004 Databases - Part 1
This series of articles aim at evaluating NBIS biometric software by using it against fingerprint image databases from FVC2004 verification competition. 1. Contextualization matters1.1. First of all,...
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Evaluating NIST Biometric Image Software (NBIS) using FVC2004 Databases - Part 2
This series of articles aim at evaluating NBIS biometric software by using it against fingerprint image databases from FVC2004 verification competition. WARNING: If you have not yet read the first...
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Arduino Project #1: RGB LED Adjusted by Potentiometer
OverviewArduino's digital pins 9, 10, and 11 have PWM (Pulse-Width Modulation), which means they are able to output a kind of analog signal. This given signal is 8-bits large, that is, integer values...
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Arduino Project #2: Musical keyboard (6 notes) with buzzer and pushbuttons
OverviewWith Arduino, we can generate sounds in several frequencies using a simple buzzer or speaker.Arduino's API comes with specific functions for this given task: tone() and noTone() [1].In this...
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Function to generate a random date value in PostgreSQL
In order to populate a database with artificial but semantically valid contents, sometimes we need to obtain random values.Considering PostgreSQL DBMS, in the case of generating DATE type values, we...
View ArticleThe 2019 Kaggle Machine Learning and Data Science Survey
Take the 2019 Kaggle Machine Learning and Data Science Survey and prepare for the upcoming analytics challenge!https://bit.ly/35mNB07Who/what are your favorite media sources that report on data science...
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