Now working @ Synesthésie

8 July 2008 at 3:53 pm (Un-Usual Post)

Hello everybody,

I’m now working at Synesthésie for an internship, preparing the 2008 edition of the biennial of Saint Denis : Art Grandeur Nature.


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19 May 2008 at 8:33 pm (Un-Usual Post, Videos)

I just seen in the news, and I have no words for this… It’s horrible…

Xenophobia attack in South Africa:

With so much violence in the world it becomes banal… For instance, this Justice video :

A thought for all the victims from violence…
Stop violence!

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The apple pie post

20 April 2008 at 12:23 pm (Un-Usual Post)

Apple pie

Nutrition Facts
Serving Size: (100 grams)

Amount Per Serving
Calories: 265

% Daily Value*

Total Fat 13g 19%
Saturated Fat 3g 15%
Cholesterol 0mg 0%
Sodium 211mg 8%
Total Carboydrates 37g 12%
Dietary Fiber 0g ~
Sugars 0g ~
Protein 2g 4%

Vitamin A 1% Vitamin C 2%
Iron 6% Calcium 0%

*Percent Daily Values are based on a 2000 calorie diet. Your daily values may be higher or lower depending on your calorie needs

Nutrient Information


Vitamin A 58 IU 1%
Retinol 9 mcg
Retional Activity Equivalent 11 mcg
Alpha Carotene 0 mcg
Beta Carotene 0 mcg
Beta Cryptoxanthin 0 mcg
Lycopene 0 mcg
Lutein + Zeaxanthin 0 mcg
Vitamin C 1.7 mg 2%
Vitamin E 0 mg 0%
Vitamin K 0 mcg 0%
Thiamin 0.148 mg 9%
Riboflavin 0.107 mg 6%
Niacin 1.23 mg 6%
Vitamin B6 0.032 mg 1%
Vitamin B12 0 mcg 0%
Folate 24 mcg 6%
Food Folate 4 5.6 mcg ~
Folic Acid 20 mcg ~
Dietary Folate Equivalents 38 mcg ~
Pantothenic Acid 0.093 mcg 0%


Calcium 7 mg 0%
Iron 1.12 mg 6%
Magnesium 7 mg 1%
Phosphorus 28 mg 2%
Potassium 79 mg 3%
Sodium 211 mg 8%
Zinc 0.19 mg 1%
Copper 0.053 mg 2%
Manganese 0.185 mg 9%
Selenium 7.8 mcg 11%


Total Fat 12.5 mg 19%
Saturated Fat 3.05 mg 15%
Monounsaturated Fat 5.393 mg ~
Polyunsaturated Fat 3.338 mg ~

PS: this apple pie was made with 50% of love and 70% of greed by Candie and Elodie. Seriously, thanks for this delicious pie.

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17 March 2008 at 1:08 pm (Un-Usual Post, Videos)

A little word about ecology and eco-participation…

I was looking for cartoons and series that I used to watch when I was a kid. And I realized something. Some of the cartoons I used to watch had a strong message.

I am thinking on Captain Planet.

I loved that cartoon… And now I’m realizing that there is nearly 20 years that people warn us about the harmful activities done by mankind.

Here is Captain Planet’s intro:

Note that 4 continents out of 6 are represented by characters, Antarctica being unoccupied and global politics required to put USSR instead of Oceania.

This cartoon clearly shows us that we did harm nature but we have to concentrate all our strength to protect Earth, and this independently of the political point of vie. I think the discussion was lunched long time ago but the due attention is starting to be given by international community. Well at least this cartoon was useful for something (I heard many times my parents say “stop watching TV and go do your homework” they were right :p ops).

So let’s try to pay a little more attention on our impact on ecosystem.

Like this our successors will watch Pingu and understand why everything is white and what are those strange creatures… :p

Bonus, some of the cartoons I used to watch:


For now… That’s all folks…

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Hypercube construction

27 February 2008 at 11:22 am (Mechatronics, Un-Usual Post, Videos)

I’ve decided to write this post in order to try to give an answer to Eggshell Robotic question “Tesseract / Hypercube – Mechanical Possible?“… The main reason to make a post on my blog rather then making a comment on Eggshell Robotic’s post is mainly the fact that I wrote a lot… and I use images and links… so here it is :

A hypercube is basically 8 cubes organized using the same logic as we use to build a square (2 dimensions) with strokes (1 dimension), and to build a cube (3 dimensions) with squares (2 dimensions)… We take the first cube, join its 6 faces with one face of 6 other cubes… then we go to the 4th dimension by joining all faces that are next to each other… The 8th cube is used to close the hypervolume…

It might be easier to explain it comparing to the cube construction… We have 6 squares (2D) we take one to use as center. We join 4 other squares around the one in the center… (still in 2D)… Now we rotate the 4 new squares to the upper dimension in order to link theme (now we are in 3D) but the cube is not closed, therefore we have a 6th square to close the missing face of the cube… Here is a site showing part of the process.

Now… Imagine a creature that has a 2D perception of the world…. He can only move in 2 dimensions. Now let’s imagine that one of those 2D perceptive creatures live on one of those 4 faces that will rotate to the third dimension of our future cube… When we add his world (the square) to the rest of the cube path, our dear creature will see a huge augmentation in his world… Imagine, in an imperceptible laps of time he sees his world size multiplied by 5 (scientists would get crazy!)… But when we build the 3rd dimension by rotating the cube faces, the creature will see his world size become 5 times smaller and it will not be able to have a perception of the rest of the cube (scientists get crazy again and then they will start research and they will create some hyperspace theory advancing the 3rd dimension)… In fact this creature can’t build a cube… Because he lives in a 2D world (and a cube is, by definition in 3D)… so even if he gets to build a cube, he will only see a bi-dimensional section of it… and he will observe that the rest of the material used to build the cube just “disappears”…

With us it works the same… We have a 3d perception (for spacial dimensions, the 4th being time – or the ability to percept the changes of our space)… If we want to build a hypercube we need 4 spacial dimensions (plus time)… So we could build an hypercube but we won’t be able to see it in its totality… We only see a 3D projection of the hypercube…

What we see in this animation is a hypercube that remains still in our 3 dimensions and that is manipulated in the 4th dimension… To have that resultant movement, we have to be able to manipulate the 4th dimension of the hypercube, if we suppose that we reach to build a hypercube, we would be able to manipulate the 4th dimension… To do so, we need hyper dimensional engines… Really complicated (in my eyes…)

But what forbids us to inspire ourselves with the hypercube transformations to find new ways to move? Nearly nothing (except the physical constraints and costs)… To be honest I like the idea presented in Eggshell Robotic… And who knows, maybe sometime in the future we don’t play hyper-rubicube?

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Touching sound…

21 February 2008 at 12:06 pm (Hypermedia,, Sound, Un-Usual Post, Wiimote)

With the development of technology, touch interface became fashion in today’s geek society.Jonny Lee (previously quoted in this post) developed his own multi touch device using a Wiimote, here is a video explaining it: Touching tools appear for all kind of things, video games, palmtops, mobile phones, DJ devices, remote controls, cash redraw screens, etc.This technology first appear for a single touching point, but now, we start to see multi touch technology – with more then a single point.Here is a video from a group called iBand using a Nintendo DS and two iPhones as instruments.


The idea is not new, other tools using touch, and multi touch interfaces exist, like Korg’s KaosPadmini kp and Kaossilator.  Groups of artists also worked with touch as an interface. It is the case for Ractable, the video speaks by itself, so check it out: 

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Knowledge sharing

10 February 2008 at 5:41 pm (Un-Usual Post)

Today in Robert Hodgin’s blog – Flight404 – I read “Source code rumination“, starting a discussion about how and what to share.

In Martin Wisniowski’s – Digital Tool – I’ve read “Doing Research in the 21st Century“, his last post in his Research and theory part of his blog, presenting a point of view about changes in the way we do research in the 21st century.

And then I thought. Both post are linked (obvious), and I started to think about sharing, and how to do that in an intelligent way…

First of all, I’ll define what is to share : to give a portion of something to another or to others. That means you don’t need to give everything. It means you can give parts of it.

Research is the systematic investigation into and study of materials and sources in order to establish facts and reach new conclusions.

(definitions from Oxford American Dictionary)

Sharing will allow people to do research, and by doing research one builds new facts and conclusion, that can be used in somebody’s else research and so on. But doing research doesn’t means that you try to find a complete solution or a perfect match. It means you’re trying to understand and build new knowledge.

So a smart way to share would be thinking on what someone could need in a research, and this is the hard part (the easiest would be to give everything in details or nothing at all). Sharing means more the simply giving, it means explaining and indicating the highlights of a problem.

For an art work it can be how and why it was made. For a program it can be some main points of it. The way someone shares his knowledge, and the way somebody else sees and process information are both personal.

There are no perfect sharing and perfect research. They are as many research as possibilities, that means an infinity. That doesn’t mean that something can be wrong or correct. I see it more like qubits where the result from a logic operation is both true and false. Quantum computers make this kind of operations, and I believe that our logic is going to change when (and if) quintic computers become common. Systems like Wikipedia are a slight approach of quantum logic, using a propositional logic system where people can add their propositions to give a definition and share their knowledge.

Erwin Schrödinger made an experiment with a cat in order to exemplify the concept of superposition in quantum mechanics. Here you’ll find an explanation about this experiment known as “Schrödinger’s cat”. Basicly when you put a cat in a box with a device that can kill it and you close the box, the cat is both potentially dead and alive at the same time. And when you open the box you’ll see only one possible result of the problem.

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Mario drums

25 January 2008 at 9:14 am (Un-Usual Post, Videos)

As a Mario fan, how could I be indifferent with this video?

Nice rhythm… :D

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Bio feedback anti-stress game

9 January 2008 at 10:06 am (First ones, Games, Hybrid Workshop, Links, Un-Usual Post)

I’ve just seen at the French news a biofeedback anti-stress PC game made by SymBioFi. The game idea is quite simple: you stick some cardiac and breath sensors on specific parts of your body and plug theme into your computer: this is your control. But how can you play with this stuff on you? “Easy”: all you need to do is to control your breath and cardiac rhythms. In other words, you need to control your stress level… The less stressed you are the more points you get…



Besides the Zen attitude, Jedi training and therapeutic proprieties of this game, the control system seems very interesting to me. It could be used to develop games where self control is a part of the plot. For instance, in a war strategy game, if you get too stressed your leadership level decreases.

This device can although be used in some kind of interactive installation where your stress level change proprieties of the installation itself…

Since we are working with Laboratory of fictions theme in the Hybrid Workshop, this device could be part of a future project. Therefore, it deserves to be presented and to have a more serious reflexion on it.

Now that I am thinking, we could use it in sound applications too…

More reflexions coming up…

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31 December 2007 at 10:00 pm (Un-Usual Post)

Happy New Year!!!


I guess the New Year eve is pretty globalized now… Everywhere in the world, we see fireworks… And they all look the same…

It’s amazing to see the quantity of fireworks burned in the new year eve in the streets of Holland… Traditional Dutch families spend around 300 euros (it can go until 500 euros, for the midle class)… The day after, the streets are full of… not empty bottles but burnt fireworks… Big difference from my home country (Brazil) where you walk on a sea of empty bottles…

and now more New Year stuff…

Here is a (pretty funny) video I’ve made showing nieuwjaarsduik a freezing diving into hot water (8°C) in Scheveningen… It’s the midday new year celebration, a dutch tradition sponsored by a sauces brand…
I still wonder how was the water…

PS: dutch people seem to have a different and interesting vision of prudishness: after diving, they need to change clothes, and for this you just need to get naked in the middle of everybody on the beach… And no need to hide parts, they don’t really care…

In order to understand a part of dutch culture, I was advised to buy a book of Colin White and Laurie Boucke, both English, called The Undutchables.

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