Friday, March 07, 2008

The Lennard-Jones potential in its various forms is described in a Wikipedia article. The truncation of the potential at large distances by a simple chop and lift operation is described, but there is no mention of splines to avoid discontinuous first derivatives, or of any special treatment at small distances. The canonical form of the potential is 4ε*[(σ/r)12 - (σ/r)6]; an alternate form is D*[(R/r)12 - 2*(R/r)6)]. The first one uses the distance at which the potential is zero (σ), the second uses the distance at which the potential is minimal (R). ε and D are the well depth in both cases.

Monday, March 03, 2008

Hagatna Bay - this is item # 570340. It comes in a pane of 20. Each of the 20 costs $0.90, and each and every of the 20 is also self-adhesive.

Tuesday, February 26, 2008

If it is not possible to step into the same river twice, then it is not possible to make the same mistake twice. Instead, what appears to be the same mistake, will be a different mistake.

Wednesday, February 20, 2008

Is avoiding procrastination a different form of procrastination? Procrastination assigns higher priority to tasks that you want to do (but don't need to do) than to tasks that you need to do (but don't want to do), and acts accordingly. Is it possible to want to do things that you need to do? The want pulls more than the need pushes, and the want wins. I prefer walking downhill to running uphill.
Creating complex solutions to simple problems can provide the foundation for the production of more complex problems which may not have simple solutions. Productivity is proportional to the number of problems solved, inversely proportional to the effort to solve a problem, and inversely proportional to the number of problems created by the solution. This could be related to the measure twice, cut once concept.

Tuesday, February 12, 2008

What does it mean for an application user interface to be "responsive" while some task is being executed? It means that the application is still able to process input events, i.e. to react to user input. Depending on the task being executed, some input events may be ignored (for example, by disabling the part of the UI responsible for launching the task, until the task is complete and another one can be submitted). Some input events must not be ignored (for example, being able to close the application, or to interrupt the task).

Thursday, February 07, 2008

If the unexamined life is not worth living, the examined life not necessarily is either, but the evaluation is needed to establish worthiness. Can zombies be passionate about their zombie existence? Should every day be rated on a scale from 1 to 7, where 1 is Monday and 7 is Friday?

Wednesday, February 06, 2008

The perfect balance lies exactly between the extremes of too little and too much. Instead of doing everything now, or doing nothing never, you do something now and then.

Friday, October 19, 2007

Parameterization of torsions involving ring atoms ...

Wednesday, December 27, 2006

Friday, December 22, 2006


Creative-Reactive Balance

reflects the degree of balance between the creative dimensions and the reactive dimensions. The percentile score here gives you a sense of how you compare to other managers with respect to the amount of energy you put into reactive versus creative behavior. It also suggests the degree to which your leadership, relationships and goal oriented behavior is coming out of a creative or reactive orientation. It suggests the degree to which your self concept and inner motivation comes from within or are determined by external expectations, rules, or conditions.

Reference

Wednesday, December 20, 2006