vrijdag 20 maart 2015

Ideal Flow

The art and science of early computational models by Aldo Giorgini

A project by Esteban Garcia Bravo and Tim McGraw - Purdue University

Simulating is a way of learning and deeply understanding natural phenomena. In the mid 1960s, scientists started to use computers to visualize complex mathematical models to further understand the behavior of large bodies of water. At Purdue University, Aldo Giorgini created algorithms to simulate turbulence and other water perturbations beginning in 1967 as part of his research at the School of Civil Engineering. The resulting visual outputs awoke Giorgini's inner artist and motivated him to incorporate the computer-based water simulations as the base for his compositions. This research analyzed primary sources (manuscripts, software documentation and artifacts) found at Giorgini's estate and revisited Giorgini's contribution developing a WebGL interactive application.


Protean strategies

Protean defence by prey animals
D. A. Humphries,P. M. Driver

"Attention is drawn to the widespread occurrence ofprotean phenomena, in which the appearance and behaviour of prey animals are rendered variable and irregular, as a weapon in the biological arms race between predators and their prey. Protean behaviour is defined as that behaviour which is sufficiently unsystematic to prevent a reactor predicting in detail the position or actions of the actor."

spiral movement in man

spiral movement in man -- aa shaeffer 1928

 aa shaeffer 1928

Blindfolded persons walk, run, swim, row, and drive automobiles in clock-spring spiral paths of greater or less regularity when attempting a straightaway. The spirals turn either right or left in one and the same individual, and may do so even in one experiment. But either right or left turns predominate in the great majority of individuals, often to a high degree. The paths show marked individuality, and there is some ground for thinking there exists a correlation between temperamental differences and general character of path.

The mechanism which produces the spiral path is not located in the locomotor organs, but in the central nervous system and is probably identical essentially with the spiral mechanism in other motile organisms, all of which move in spiral paths when there are no guiding senses to direct the path. The clock-spring spiral in man is interpreted as the expression in two dimensions of space of a helical spiral mechanism which seems to exist in all motile organisms moving in three dimensions of space and in amebas which move in two dimensions. In a large number of lower organisms the number of body lengths per spiral turn is almost constant, being about 4.5. The smallest regular swimming spirals in man are very close to this value, but the smallest regular walking spirals are somewhat larger. The fundamental spiral mechanism seems to be of molecular dimensions, and there seems to exist a demonstrable locomotor bilateral asymmetry in very nearly, if not quite, all organisms.

(via https://www.flickr.com/photos/pluriverse/)

vrijdag 30 januari 2015

Greg Borenstein; Homunculus

from; ideas for dozens

"Homunculus is a video self-portrait that explores facial expressions and physical performance. In it, I use the position of my body to puppet a 3D model of my own head. Each limb is mapped to a particular part of the face that plays a role in determining the emotional expressiveness of a facial expression: my hands control my brows, my knees control the corners of my mouth, etc."

Homunculus from Greg Borenstein on Vimeo.


from: philip mccarthy’s weblog
"Pareidoloop is a toy that makes images that approximate human faces. It starts by generating random polygons, feeding them into a computer vision face detection algorithm, and then continuing to add more polygons to increase the face detector’s “confidence” score."


woensdag 28 januari 2015

line and polysemy


Polysemy (/pəˈlɪsɨmi/ or /ˈpɒlɨsmi/;[1][2] from Greek: πολυ-, poly-, "many" and σῆμα, sêma, "sign") is the capacity for a sign (e.g., a word, phrase, etc.) or signs to have multiple related meanings (sememes), i.e., a large semantic field


"The following list provides brief descriptions of the 25 senses of line in WordNet:

1. wrinkle, furrow, crease, crinkle, seam, line: "His face has many wrinkles"
2. line: a length (straight or curved) without breadth or thickness
3. line, dividing line: "there is a narrow line between sanity and insanity"
4. agate line, line: space for one line of print used to measure advertising
5. credit line, line of credit, line: the maximum credit that a customer is allowed
6. line: in games or sports; a mark indicating positions or bounds of the playing area
7. line: a spatial location defined by a real or imaginary unidimensional extent
8. course, line: a connected series of events or actions or developments
9. line: a formation of people or things one after (or beside) another
10. lineage, line, line of descent, descent, bloodline, blood line, blood, pedigree
I 1. tune, melody, air, strain, melodic fine, line, melodic phrase: a succession of notes
12. line: a linear string of words expressing some idea
13. line: a mark that is long relative to its width; "He drew a line on the chart"
14. note, short letter, line: "drop me a line when you get there"
15. argumentation, logical argument, line of thought, line of reasoning, line
16. telephone line, phone line, line: a telephone connection
17. production line, assembly line, line: a factory system
18. pipeline, line: a long pipe used to transport liquids or gases
19. line: a commercial organization serving as a common carrier
20. line, railway line, rail line: railroad track and roadbed
21. line: something long and thin and flexible
22. cable, line, transmission line: electrical conductor connecting telephones or television
23. line, product line, line of products, line of merchandise, business line, line of business
24. line: acting in conformity; "in line with" or "he got out of line" or "toe the line"
25. occupation, business, line of work, line: the principal activity in your life"

Disambiguating Noun Groupings with Respect to WordNet Senses
Philip Resnik