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Statecharts: Some Critical Observations
A critical analysis of statecharts is presented, motivated by difficulties observed in practice by the author and supported by examples. Particular attention is paid to the possible uses of hierarchy and their effects. Despite the notation’s popularity, the observations indicate fundamental problems with using statecharts for specification.
statemachine  statechart  fsm 
25 days ago
Donor Profiles :: Allen Brain Atlas: Cell Types
This database of cell types includes experimental data acquired from cells originating from the adult human brain. Human brain tissue was analyzed from neurosurgical and postmortem sources, and is available thanks to the generosity of tissue donors.
Neuroscience  cognitive  biology 
7 weeks ago
The Radical Message of 'Halt and Catch Fire' | WIRED
Computers were and are nothing more than tools, boxes of beautiful ideas that are only as valuable as they are human—ones whose connections can destroy us as easily as they can draw us together, if we are not careful. But at their best, they can connect us with the thing that really matters: the people who will stand with us on the precipice of our lives, gazing down at the chasm of the next challenge, and hold our hands as we jump into the unknown.
tv  computers 
8 weeks ago
No Silver Bullet: Essence and Accidents of Software Engineering
But, as we look to the horizon of a decade hence, we see no silver bullet. There is no single development, in either technology or in management technique, that by itself promises even one order-of-magnitude improvement in productivity, in reliability, in simplicity. In this article, I shall try to show why, by examining both the nature of the software problem and the properties of the bullets proposed.

Skepticism is not pessimism, however. Although we see no startling breakthroughs--and indeed, I believe such to be inconsistent with the nature of software--many encouraging innovations are under way. A disciplined, consistent effort to develop, propagate, and exploit these innovations should indeed yield an order-of-magnitude improvement. There is no royal road, but there is a road.

The first step toward the management of disease was replacement of demon theories and humours theories by the germ theory. That very step, the beginning of hope, in itself dashed all hopes of magical solutions. It told workers that progress would be made stepwise, at great effort, and that a persistent, unremitting care would have to be paid to a discipline of cleanliness. So it is with software engineering today.
engineering  management  Software 
8 weeks ago
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