Structural dynamics - Revision history

en>Cydebot: Robot - Speedily moving category Dynamics to :Category:Dynamics (mechanics) per CFDS.

2014-11-11T09:18:37Z

Robot - Speedily moving category Dynamics to Category:Dynamics (mechanics) per CFDS.

← Older revision		Revision as of 11:18, 11 November 2014
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	~~The '''Ricker model''', named after [[Bill Ricker]]~~, is ~~a classic discrete population model which gives the~~ [~~[expected value\|expected]] number ''a''<sub> ''t''+1<~~/~~sub> (or density) of individuals in generation ''t'' + 1 as a function of the number of individuals in the previous generation,<ref>Ricker (1954)<~~/~~ref>~~		Nice to satisfy you, my title std testing at home is Refugia. His family lives in [http://water.me.vccs.edu/courses/env108/lesson5_2.htm South Dakota] but his wife wants them to home std test move. For years he's been working as a meter reader and it's something he truly enjoy. One of [http://www.buzzbit.net/user/AFilson over the counter std test] very very best issues in the globe for him is to collect badges but he is struggling to discover time for it.<br><br>Look [http://www.gaysphere.net/blog/167593 at home std testing] my web page: [http://gcjcteam.org/index.php?mid=etc_video&document_srl=655020&sort_index=regdate&order_type=desc http://gcjcteam.org/index.php?mid=etc_video&document_srl=655020&sort_index=regdate&order_type=desc]

	~~: <math>a_{t+1} = a_t e^{r\left(1-\frac{a_t}{k}\right)}~~.~~\,</math>~~

	~~Here ''r'' is interpreted as an intrinsic growth rate and ''k'' as the [[carrying capacity]] of the environment~~. ~~The Ricker model was introduced in 1954 by Ricker in the context of [[Fish stock\|stock]] and recruitment in [[fisheries]].~~

	~~The model can be used to predict the number of fish that will be present in a fishery~~.~~<ref>de Vries et al.<~~/~~ref><ref>Marland<~~/~~ref> Subsequent work has derived the model under other assumptions such as [[scramble competition]]<ref>Brännström and Sumpter(2005)<~~/~~ref> or within-year resource limited competition~~.~~<ref name=Geritz /> The Ricker model is a [[limiting case~~]~~] of the Hassell model<ref name=Geritz>Geritz and Kisdi (2004)</ref> which takes the form~~

	~~: <math>a_{t+1} = k_1 \frac{a_t}{ \left(1+k_2 a_t\right)^c}~~. ~~</math>~~

	~~When ''c~~''~~ = 1, the Hassell model is simply the [[Beverton–Holt model]]~~.

	~~==See also==~~
	* [[Population dynamics of ~~fisheries]]~~

	~~==Notes==~~
	~~{{reflist}}~~

	~~==References==~~
	* Brännström A and Sumpter DJ (2005) [http://www.~~math~~.~~uu.se~~/~~~david~~/~~web/BrannstromSumpter05a.pdf "The role of competition and clustering~~ in ~~population dynamics"] ''Proc Biol Sci.'', '''272'''(1576): 2065–72.~~
	* Geritz SA and Kisdi E (2004). [http://~~theory.bio~~.uu.~~nl/rdb~~/te/~~pdf/Geritz_jtb04.pdf "On the mechanistic underpinning of discrete-time population models with complex dynamics"~~]~~. ''J Theor Biol.'', 21 May 2004;228(2)~~:~~261–9.~~
	* Noakes, David L. G. (Ed.) (2006) [http://~~books~~.~~google~~.~~co.nz/books~~?id=~~8aYNrPg5KhgC~~&pg=~~PA26~~&dq=~~Ricker+%22+Stock+and+recruitment.%22&hl=en&ei=CN8tTpPDEO-HmQXU-uTlBg~~&sa=X&oi=book_result&ct=result&resnum=2&ved=0CC0Q6AEwAQ#v=onepage&q=Ricker%20%22%20Stock%20and%20recruitment.%22&f=false ''Bill Ricker: an appreciation''] シュプリンガー・ジャパン株式会社, ISBN 978-1-4020-4707-7.
	* Ricker, W. E. (1954) [http://~~www~~.~~nrcresearchpress.com~~/~~doi/abs/10~~.~~1139/f54-039 Stock and Recruitment] ''Journal of the Fisheries Research Board of Canada'', '''11'''(5): 559–623. {{doi\|10.1139/f54-039}}~~
	* Ricker, W E (1958) ''Handbook of computation for biological statistics of fish populations''. Bulletin 119 of the Fisheries Resource Board, Canada, Ottawa.

	~~{{Use dmy dates\|date~~=~~September 2010}}~~

	~~{{DEFAULTSORT:Ricker Model}}~~
	~~[[Category:Demography]~~]

en>R'n'B: Disambiguated: forcing function → forcing function (differential equations)

2014-02-03T19:55:08Z

Disambiguated: forcing function → forcing function (differential equations)

← Older revision		Revision as of 21:55, 3 February 2014
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	~~Hi there~~. ~~Allow me begin by introducing the author~~, ~~her name~~ is ~~Myrtle Cleary~~. ~~My family life~~ in ~~Minnesota~~ and ~~my family members enjoys it~~. The ~~preferred hobby for my kids and me is~~ to ~~play baseball~~ and ~~I'm trying to make it a occupation~~. ~~Supervising~~ is ~~my profession.~~<br><br>~~Here~~ is ~~my blog~~ - [http://~~xrambo~~.~~com~~/~~blog/191590~~ http://~~xrambo~~.com]		The '''Ricker model''', named after [[Bill Ricker]], is a classic discrete population model which gives the [[expected value\|expected]] number ''a''<sub> ''t''+1</sub> (or density) of individuals in generation ''t'' + 1 as a function of the number of individuals in the previous generation,<ref>Ricker (1954)</ref>

			: <math>a_{t+1} = a_t e^{r\left(1-\frac{a_t}{k}\right)}.\,</math>

			Here ''r'' is interpreted as an intrinsic growth rate and ''k'' as the [[carrying capacity]] of the environment. The Ricker model was introduced in 1954 by Ricker in the context of [[Fish stock\|stock]] and recruitment in [[fisheries]].

			The model can be used to predict the number of fish that will be present in a fishery.<ref>de Vries et al.</ref><ref>Marland</ref> Subsequent work has derived the model under other assumptions such as [[scramble competition]]<ref>Brännström and Sumpter(2005)</ref> or within-year resource limited competition.<ref name=Geritz /> The Ricker model is a [[limiting case]] of the Hassell model<ref name=Geritz>Geritz and Kisdi (2004)</ref> which takes the form

			: <math>a_{t+1} = k_1 \frac{a_t}{ \left(1+k_2 a_t\right)^c}. </math>

			When ''c'' = 1, the Hassell model is simply the [[Beverton–Holt model]].

			==See also==
			* [[Population dynamics of fisheries]]

			==Notes==
			{{reflist}}

			==References==
			* Brännström A and Sumpter DJ (2005) [http://www.math.uu.se/~david/web/BrannstromSumpter05a.pdf "The role of competition and clustering in population dynamics"] ''Proc Biol Sci.'', '''272'''(1576): 2065–72.
			* Geritz SA and Kisdi E (2004). [http://theory.bio.uu.nl/rdb/te/pdf/Geritz_jtb04.pdf "On the mechanistic underpinning of discrete-time population models with complex dynamics"]. ''J Theor Biol.'', 21 May 2004;228(2):261–9.
			* Noakes, David L. G. (Ed.) (2006) [http://books.google.co.nz/books?id=8aYNrPg5KhgC&pg=PA26&dq=Ricker+%22+Stock+and+recruitment.%22&hl=en&ei=CN8tTpPDEO-HmQXU-uTlBg&sa=X&oi=book_result&ct=result&resnum=2&ved=0CC0Q6AEwAQ#v=onepage&q=Ricker%20%22%20Stock%20and%20recruitment.%22&f=false ''Bill Ricker: an appreciation''] シュプリンガー・ジャパン株式会社, ISBN 978-1-4020-4707-7.
			* Ricker, W. E. (1954) [http://www.nrcresearchpress.com/doi/abs/10.1139/f54-039 Stock and Recruitment] ''Journal of the Fisheries Research Board of Canada'', '''11'''(5): 559–623. {{doi\|10.1139/f54-039}}
			* Ricker, W E (1958) ''Handbook of computation for biological statistics of fish populations''. Bulletin 119 of the Fisheries Resource Board, Canada, Ottawa.

			{{Use dmy dates\|date=September 2010}}

			{{DEFAULTSORT:Ricker Model}}
			[[Category:Demography]]

157.203.254.1: spelling edit GROUnD

2012-06-12T20:52:02Z

spelling edit GROUnD

New page

Hi there. Allow me begin by introducing the author, her name is Myrtle Cleary. My family life in Minnesota and my family members enjoys it. The preferred hobby for my kids and me is to play baseball and I'm trying to make it a occupation. Supervising is my profession.<br><br>Here is my blog - [http://xrambo.com/blog/191590 http://xrambo.com]