Archive for July, 2009

Primeiro conjunto de fotos do Caio

Praticamente a primeira O que é isso perto de mim?
Primeira foto completa da família Dormindo, agora no próprio quarto

O resto está no Flickr.

Out Of The Shadows

Primeira foto do Caio

Hold a halo round the world
Golden is the day
Princes of the Universe,
your burden is the way
So there is no better time
who will be born today
A gypsy child at day break
A King for a day

Out of the shadows and into the sun
Dreams of the past as the old ways are done
Oh there is beauty and surely there is pain
But we must endure it, to live again

Dusty dreams in fading daylight
Flicker on the walls
Nothing new your life’s adrift,
what purpose to it all?
Eyes are closed and death is calling
Reaching out its hand
Call upon the starlight to surround you

Out of the shadows and into the sun
Dreams of the past as the old ways are done
Oh there is beauty and surely there is pain
But we must endure it to live again

Out of the shadows and into the sun
Dreams of the past as the old ways are done
Oh there is beauty and surely there is pain
But we must endure it to live again

Out of the shadows and into the sun
Dreams of the past as the old ways are done
Oh there is beauty and surely there is pain
But we must endure it to live again

Out of the shadows and into the sun
Dreams of the past as the old ways are done
Oh there is beauty and surely there is pain
But we must endure it to live again

A man who casts no shadow has no soul

Letra da música Out Of The Shadows do Iron Maiden.

Teste fotográfico

O Caio está chegando. E isso me faz lembrar: tenho que aprender a usar a minha máquina fotográfica. Não só aprender a usar a máquina, mas aprender a realmente fotografar. Tirar umas chapas bacanas. Infelizmente não tenho me esforçado. Gostaria de fazer um curso, mas ainda não achei um que seja bem recomendado em Manaus. Será que alguém sabe?

Enfim, como muito se aprende com a prática, hoje fiquei tirando umas fotos aleatórias em casa. Estava tentando aprender a manipular a abertura, mais especificamente tentando tirar fotos com uma abertura grande. Na foto da McLaren na estante, estava tentando deixar o foco no meio do carro. Tenho uma composição na cabeça para uma foto que vai requerer algo assim.

McLaren na estante Gollum
Gollum

Isso tudo também me faz lembrar: tenho que comprar um tripé.

Context-aware system architecture

The main objective of a context-aware system is to translate sensor input into application action and adapted UI. In between, raw sensor information is used to build user context. It is very important to note that not all sensors have high contribution in defining user context. Contexts like “running” will probably only need the data from accelerometers.

One nice overview of a complete context-aware system is available here. The document is rather old, but clearly represents a very interesting high-level architecture. I think that this is the way to follow. In this architecture, DBUS can be used as the bridge between a context information daemon and applications.

Context-aware system high-level architecture

Another challenge is context representation. What data structure should be used to model a user’s ever-changing context? My first guess is an extended finite state machine where contexts are represented by states and sensors inputs are the trigger conditions for state transition.

Context state machine example

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