frankly consider him a great virtuoso, " said Italian painter Guercino of Rembrandt van Rijn. Guercino (1591–1666) was referring to the legendary master not as painter or portraitist but as etcher because it was etchings that built Rembrandt's reputation during his lifetime (1). The fi rst to fully exploit this technique, which dates back to 14th-century armor ornamentation, he left behind some...

“K thyself” resonated with Rembrandt van Rijn. More than any other artist of his caliber at any time, he explored his own image in as many as 90 self-portraits, some 60 of them paintings, an extraordinary record of self-examination. He was so frank with his depictions he could not have been motivated by narcissism. He may have taken up portraiture for its connection to history painting, a lifel...

This two-part article reviews selected problems in the theory of cellular automata, aiming to locate this theory with respect to the theory of complex systems in general. To appear in the journal "Complexity". 1 Figure 1: De schelp (conus marmoreus) This Rembrandt (1650) etching describes a shell bearing markings similar to those produced by some cellular automata.

Creation of a multimedia title with a limited budget, and staff places constraints on a project that at times, seem insurmountable. As Ben Dubrovsky states in his article on well designed multimedia, "Constraints are not hindrances. Rather, they should be considered the means of setting the bounds of your design and focusing on what can be done. 1 Working within this paradigm, the goals of the ...