P-form electrodynamics - Revision history

en>Colonies Chris: sp, date & link fixes; unlinking common words, replaced: Yang-Mills → Yang–Mills (2) using AWB

2014-03-09T17:51:34Z

sp, date & link fixes; unlinking common words, replaced: Yang-Mills → Yang–Mills (2) using AWB

← Older revision		Revision as of 19:51, 9 March 2014
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	~~{{for\|the former President of Nature Society in Singapore\|Geh Min\|the city in Iran\|Nik Shahr}}~~		Irwin Butts is what my spouse enjoys to call me over the [http://Stdtestguide.com/std-testing/home-std-test/ counter std] test although [http://Herpeslife.com/celebrities-with-herpes/ I don't] really like becoming called like that. Hiring has been my profession for some time but I've already utilized for an additional one. Her husband at home [http://www.pponline.co.uk/user/miriamlinswkucrd std home test] std testing and her live in Puerto Rico but she will have to transfer one working day or an additional. To perform baseball is the hobby he will never [http://riddlesandpoetry.com/?q=node/19209 over the counter std test] stop performing.<br><br>my blog post - [http://forums.cellphonedge.com/groups/valuable-guidance-for-successfully-treating-candidiasis/ home std test kit]
	~~[[Image:GEH Variation.png\|thumb\|right\|A comparison of the allowable variance under the GEH formula for GEH=5 with a variance of 5 percent]]~~
	~~The '''GEH Statistic'''~~ is ~~a [[formula]] used in [[Traffic engineering (transportation)\|traffic engineering]], [[traffic forecasting]], and [[traffic modelling]]~~ to ~~compare two sets of [[traffic volume]]s.~~ ~~The GEH formula gets its name from Geoffrey E. Havers, who invented it in~~ the ~~1970s while working as a transport planner in~~ [~~[London, England]]~~. ~~Although its mathematical form is similar to a [[chi~~-~~squared~~ test]~~], is not a true [[statistics\|statistical~~ test~~]]. Rather, it is an~~ [~~[empirical\|empirical formula]] that has proven useful for a variety of traffic analysis purposes~~.

	~~:The formula for the "GEH Statistic" is:~~

	~~:<math>GEH=\sqrt{\frac{2(M-C)^2}{M+C}}<~~/~~math>~~

	~~:Where M is the hourly traffic volume from the traffic model (or new count) and C is the real~~-~~world hourly traffic count (or the old count)~~

	~~Using the GEH Statistic avoids some pitfalls that occur when using simple [[percentage]]s to compare two sets of volumes. This is because the traffic volumes in real~~-~~world [[transportation system]]s vary over a wide range. For example, the mainline of a [[freeway]]~~/~~[[motorway]] might carry 5000 vehicles per hour, while one of the on-ramps leading to the freeway might carry only 50 [[vehicle]~~]~~s per hour (in~~ that ~~situation it would not be possible to select a single percentage of variation that is acceptable~~ for ~~both volumes)~~. ~~The GEH statistic reduces this problem; because the GEH statistic is non-linear, a single acceptance threshold based on GEH can be used over a fairly wide range of traffic volumes.~~ The use of GEH as an acceptance criterion for travel demand [[transportation forecasting\|forecasting model]]s is recognised in the UK [[Highways Agency]]'s [[Design Manual for Roads and Bridges]] (DMRB), Volume 12, Section 2, the [http://www.~~wisdot~~.~~info~~/~~microsimulation~~/~~index.php?title=Main_Page Wisconsin microsimulation modeling guidelines~~], and ~~other references.~~

	~~For traffic modelling work~~ in the "baseline" scenario, a GEH of less than 5.0 is considered a good match between the modelled and observed ''hourly'' volumes (flows of longer or shorter durations should be converted to hourly equivalents to use these thresholds). According to DMRB, 85% of the volumes in a traffic model should have ~~a GEH less than 5.0. GEHs in the range of 5.0~~ to ~~10.0 may warrant investigation. If the GEH is greater than 10.0, there is a high probability that there is a problem with either the travel demand model~~ or ~~the data (this could be something as simple as a data entry error, or as complicated as a serious model calibration problem).~~

	~~==Applications==~~
	~~The GEH formula is useful in situations such as the following:{{Citation needed\|date=January 2011}}~~

	* Comparing a set of traffic volumes from manual traffic counts with a set of volumes done at the same locations using automation (e.g. ~~a pneumatic tube [[traffic counter]]~~ is ~~used to check the total entering volumes at an intersection to affirm the work done by technicians doing a manual count of~~ the ~~turn volumes).~~
	* Comparing the traffic volumes obtained from this year's traffic counts with a group of counts done at the same locations in a previous year.
	* ~~Comparing the traffic volumes obtained from a travel demand forecasting model (for the "base year" scenario) with the real-world traffic volumes.~~

	~~== See also ==~~
	*[[Microsimulation]]
	*[[Traffic counter]]
	*[[Traffic flow]]
	*[[Traffic engineering (transportation)]]
	*[[Transportation planning]]
	*[[Trip generation]]

	~~{{Unreferenced\|date=January 2011}}~~

	~~==External links==~~
	*[http://~~www~~.~~archive2.official-documents.co.uk~~/~~document~~/~~deps/ha/dmrb/index~~.~~htm UK Highways Agency's Design Manual for Roads & Bridges (DMRB)]~~
	* [http://~~www~~.~~wisdot~~.~~info~~/~~microsimulation~~/~~index.php?title=Main_Page Wisconsin Microsimulation Modeling Guidelines]~~

	~~[[Category:Transport engineering]]~~
	~~[[Category:Transportation planning]~~]

en>Cuzkatzimhut: ref

2013-10-01T16:36:02Z

ref

← Older revision		Revision as of 18:36, 1 October 2013
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	~~I would like~~ to ~~introduce myself~~ to ~~you~~, ~~I am Jayson Simcox but I don't like~~ when ~~people use my complete title~~. ~~To perform domino~~ is ~~something I really enjoy doing~~. ~~I am~~ an ~~invoicing officer~~ and ~~I'll be promoted quickly~~. For ~~many years he's been residing~~ in ~~Mississippi~~ and ~~he doesn~~'~~t strategy on changing it~~.~~<br><br>My website~~ ... ~~are psychics~~ real ([http://~~formalarmour~~.~~com~~/index.~~php?do=~~/~~profile-26947~~/info/ ~~formalarmour~~.~~com~~])		{{for\|the former President of Nature Society in Singapore\|Geh Min\|the city in Iran\|Nik Shahr}}
			[[Image:GEH Variation.png\|thumb\|right\|A comparison of the allowable variance under the GEH formula for GEH=5 with a variance of 5 percent]]
			The '''GEH Statistic''' is a [[formula]] used in [[Traffic engineering (transportation)\|traffic engineering]], [[traffic forecasting]], and [[traffic modelling]] to compare two sets of [[traffic volume]]s. The GEH formula gets its name from Geoffrey E. Havers, who invented it in the 1970s while working as a transport planner in [[London, England]]. Although its mathematical form is similar to a [[chi-squared test]], is not a true [[statistics\|statistical test]]. Rather, it is an [[empirical\|empirical formula]] that has proven useful for a variety of traffic analysis purposes.

			:The formula for the "GEH Statistic" is:

			:<math>GEH=\sqrt{\frac{2(M-C)^2}{M+C}}</math>

			:Where M is the hourly traffic volume from the traffic model (or new count) and C is the real-world hourly traffic count (or the old count)

			Using the GEH Statistic avoids some pitfalls that occur when using simple [[percentage]]s to compare two sets of volumes. This is because the traffic volumes in real-world [[transportation system]]s vary over a wide range. For example, the mainline of a [[freeway]]/[[motorway]] might carry 5000 vehicles per hour, while one of the on-ramps leading to the freeway might carry only 50 [[vehicle]]s per hour (in that situation it would not be possible to select a single percentage of variation that is acceptable for both volumes). The GEH statistic reduces this problem; because the GEH statistic is non-linear, a single acceptance threshold based on GEH can be used over a fairly wide range of traffic volumes. The use of GEH as an acceptance criterion for travel demand [[transportation forecasting\|forecasting model]]s is recognised in the UK [[Highways Agency]]'s [[Design Manual for Roads and Bridges]] (DMRB), Volume 12, Section 2, the [http://www.wisdot.info/microsimulation/index.php?title=Main_Page Wisconsin microsimulation modeling guidelines], and other references.

			For traffic modelling work in the "baseline" scenario, a GEH of less than 5.0 is considered a good match between the modelled and observed ''hourly'' volumes (flows of longer or shorter durations should be converted to hourly equivalents to use these thresholds). According to DMRB, 85% of the volumes in a traffic model should have a GEH less than 5.0. GEHs in the range of 5.0 to 10.0 may warrant investigation. If the GEH is greater than 10.0, there is a high probability that there is a problem with either the travel demand model or the data (this could be something as simple as a data entry error, or as complicated as a serious model calibration problem).

			==Applications==
			The GEH formula is useful in situations such as the following:{{Citation needed\|date=January 2011}}

			* Comparing a set of traffic volumes from manual traffic counts with a set of volumes done at the same locations using automation (e.g. a pneumatic tube [[traffic counter]] is used to check the total entering volumes at an intersection to affirm the work done by technicians doing a manual count of the turn volumes).
			* Comparing the traffic volumes obtained from this year's traffic counts with a group of counts done at the same locations in a previous year.
			* Comparing the traffic volumes obtained from a travel demand forecasting model (for the "base year" scenario) with the real-world traffic volumes.

			== See also ==
			*[[Microsimulation]]
			*[[Traffic counter]]
			*[[Traffic flow]]
			*[[Traffic engineering (transportation)]]
			*[[Transportation planning]]
			*[[Trip generation]]

			{{Unreferenced\|date=January 2011}}

			==External links==
			*[http://www.archive2.official-documents.co.uk/document/deps/ha/dmrb/index.htm UK Highways Agency's Design Manual for Roads & Bridges (DMRB)]
			* [http://www.wisdot.info/microsimulation/index.php?title=Main_Page Wisconsin Microsimulation Modeling Guidelines]

			[[Category:Transport engineering]]
			[[Category:Transportation planning]]

en>ZéroBot: r2.7.1) (robot Adding: ko:미분형식 전기역학

2011-07-03T23:11:04Z

r2.7.1) (robot Adding: ko:미분형식 전기역학

New page

I would like to introduce myself to you, I am Jayson Simcox but I don't like when people use my complete title. To perform domino is something I really enjoy doing. I am an invoicing officer and I'll be promoted quickly. For many years he's been residing in Mississippi and he doesn't strategy on changing it.<br><br>My website ... are psychics real ([http://formalarmour.com/index.php?do=/profile-26947/info/ formalarmour.com])