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Blog: http://jerroldprothero.blogspot.com/
(As of July, 2009 the below documents are in the top ten Google search results for the terms 'Ajax best practices', 'Ajax usability benefits', 'ambulatory cues', 'anchor effect', 'applied synesthesia', 'background manipulations', 'basal ganglia components', 'basal ganglia disease', 'basal ganglia functionality', 'basal ganglia pathways', 'compelling fables', 'composing epic poetry', 'confirmation phase', 'contrast gradient screen', 'control reversals', 'convenience overshoot', 'cross-over amplitude', 'curvature polynomial', 'customer confusion website', 'display angles', 'dissertation experiment', 'Embedded Figures Test', 'Euler's formula fractional powers', 'Euler's formula functional decomposition', 'Euler's formula Taylor polynomials', 'field of view requirements', 'foreground occlusion', 'general brain anatomy', 'goodness measures', 'Homeric method', 'induced motion measure', 'inertial detection threshold', 'inertial dominance', 'inertial nulling', 'inertial stimuli', 'inside-out displays', 'interface sickness', 'kinesia paradoxa', 'learn synesthesia', 'luning effect', 'methods experiment', 'Malcolm horizon', 'motion sickness presence', 'motor control hierarchy', 'non-dominant eye', 'nulling measures', 'occlusion experiments', 'outside-in displays', 'physiological measures', 'positive boredom', 'presence hypothesis', 'presence manipulations', 'presence measure', 'principles literature', 'psychological measures', 'quantitative experiment', 'quantitative measure', 'quantitative presence', 'reported presence', 'rest frame', 'robust presence', 'rotating chair', 'simulator sickness experiments', 'simulator sickness questionnaire', 'simulator side-effects', 'spatial illusions', 'spatial stabilization', 'sustaining ambulation', 'treatment akinesia', 'ucd rup', 'vection', 'virtual image cues', 'visual background', 'visual foreground', 'visual inertial', and 'visual manipulations'.)
Letter to the Financial Times on the financial crisis, evolutionary biology, and government regulation. (April 21, 2008) http://www.ft.com/cms/s/0/4dbff6f4-0f3c-11dd-9646-0000779fd2ac.html?nclick_check=1 Letter to the Economist on digital security and technology history. (November 14, 2002) http://www.economist.com/opinion/displaystory.cfm?story_id=1441631
cosh(x/sqrt(2))cos(x/sqrt(2)) = 1 - x^4/4! + x^8/8! - ...
Oa krido le monza - One must believe in the morning.
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| Introduces an extension of Euler's formula to include fractional powers of i. Generates an infinite family of functions that collectively define an orthogonal basis for the Taylor polynomials. A functional decomposition technique is discussed that is similar to Fourier analysis, but more general in that it provides a balanced view of both periodic and exponential characteristics, and is simpler to compute. Also covers the inner product, identities, curvature, polynomial roots, etc. |
| By
jprothero
on Apr. 14 2007
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338.9kb
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617 View(s)
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| Tags:
Euler
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formula
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geometry
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taylor
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algebra
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mathematics
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curvature
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polynomial
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| A software development methodology integrating User-Centered Design (UCD) with a light-weight version of the Rational Unified Process (RUP). The goal is to help ensure both that software development targets real user needs, and that it finishes successfully. |
| By
jprothero
on May. 31 2007
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Size:
285kb
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Source:
http://www.jackbe.com
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429 View(s)
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| Tags:
Software
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RUP
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rational
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process
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iterative
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| How to avoid losing a website, product or company from poor usability and product life-cycle management. |
| By
jprothero
on Mar. 6 2007
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Size:
51kb
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314 View(s)
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| Tags:
usability
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vc
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user-centered
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| Ph.D. dissertation (1998). The psychology of virtual environments. Borrowed from physics to introduce a unified framework for understanding different aspects of spatial perception. Based on the framework, developed an "objective" measure for the sense of "being in" virtual environments, based on sensory conflict; a technique for reducing simulator sickness through visual background manipulations; and a technique for increasing presence with foreground occlusions. |
| By
jprothero
on Mar. 5 2007
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Size:
725.2kb
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Source:
www.hitl.washington.edu/publications/r-98-11/
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257 View(s)
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Presence
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vection
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physics
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frame
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| Introduced the use of visual background manipulations to reduce simulator sickness, a major problem for simulators and electronic games. First use of the phrase "Independent Visual Background." Related patent: USP #6,497,649 (2002)
"Alleviating motion, simulator, and virtual environmental sickness by presenting visual scene components matched to inner ear vestibular sensations."
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| By
jprothero
on Mar. 6 2007
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Size:
28.7kb
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Source:
http://www.hitl.washington.edu
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189 View(s)
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