Talk:Lead-lag effect

From Wikipedia, the free encyclopedia

WikiProject Systems
This article is within the scope of WikiProject Systems, which collaborates on articles related to Systems science.
Systems rating: Stub Class Mid importance  Field: Control theory
Please update this rating as the article progresses, or if the rating is inaccurate. Please also add comments to suggest improvements to the article.

This article makes no sense. -- Tim Starling 03:49 26 Jul 2003 (UTC)

I agree. I've replaced it with an article describing the real use of lead-lag effect in science, as far as I can tell: just as a generic term describing correlations between two variables at separate times. I did a 40-year literature search on INSPEC to make sure that there's no common use of the term for the trivial differential equation that the article previously contained. (One has to read between the lines in Reddi's articles to figure out what concept he is garbling; it seems like those equations may have come from lead-lag compensators in control theory.) Steven G. Johnson

[edit] Fair use rationale for Image:Pyat rublei 1997.jpg

Image:Pyat rublei 1997.jpg is being used on this article. I notice the image page specifies that the image is being used under fair use but there is no explanation or rationale as to why its use in this Wikipedia article constitutes fair use. In addition to the boilerplate fair use template, you must also write out on the image description page a specific explanation or rationale for why using this image in each article is consistent with fair use.

Please go to the image description page and edit it to include a fair use rationale. Using one of the templates at Wikipedia:Fair use rationale guideline is an easy way to insure that your image is in compliance with Wikipedia policy, but remember that you must complete the template. Do not simply insert a blank template on an image page.

If there is other fair use media, consider checking that you have specified the fair use rationale on the other images used on this page. Note that any fair use images uploaded after 4 May, 2006, and lacking such an explanation will be deleted one week after they have been uploaded, as described on criteria for speedy deletion. If you have any questions please ask them at the Media copyright questions page. Thank you.

BetacommandBot 11:29, 6 July 2007 (UTC)