Total variation - Revision history

173.69.149.160 at 00:22, 2 December 2014

2014-12-02T00:22:37Z

← Older revision		Revision as of 02:22, 2 December 2014
Line 1:		Line 1:
	~~The~~ '~~''accelerator effect''' in economics refers to a positive effect~~ on private [[fixed investment]] of the growth of the market economy (measured e.g. by a change in [[Gross National Product]]). Rising GNP (an economic boom or prosperity) implies that businesses in general see rising profits, increased sales and cash flow, and greater use of existing capacity. This usually implies that profit expectations and business confidence rise, encouraging businesses to build more factories and other buildings and to install more machinery. (This expenditure is ~~called '''fixed investment'''.) This may lead to further growth of~~ the ~~economy through the stimulation of consumer incomes and purchases, i.e~~.~~, via the [[Multiplier (economics)\|multiplier]] effect.~~		Eusebio Stanfill is what's produced on my birth records although it is always the name on private birth certificate. Idaho is our birth install. I work as an pay for clerk. As a man what Post really like is coming off as but I'm thinking through to starting something new. You will probably find my website here: http://circuspartypanama.com<br><br>My web blog clash of clans cheat [[http://circuspartypanama.com via]]

	The accelerator effect also goes the other way: falling GNP (a [[recession]]) hurts business profits, sales, cash flow, use of capacity and expectations. This in turn discourages fixed investment, worsening a recession by the multiplier effect.

	~~The accelerator effect fits the behavior of an economy best when either the economy~~ is ~~moving away from [[full employment]] or when it is already below that level of production~~. This is because high levels of [[aggregate demand]] hit against the limits set by the existing labour force, the existing stock of capital goods, the availability of natural resources, and the technical ability of an ~~economy to convert inputs into products~~.

	~~==Multiplier effect vs. acceleration effect==~~
	~~<!-- The open paragraph is not exactly right. Discussion is welcome in the discussion page. -->~~
	~~The acceleration effect is the phenomenon that~~ a ~~variable moves toward its desired value faster and faster with respect to time. Usually, the variable is the capital stock. In Keynesian models, fixed capital~~ is not in consideration, so the accelerator coefficient becomes the reciprocal of the [[Spending multiplier\|multiplier]] and the capital decision degenerates to investment decision. In more general theory, where the capital decision determines the desired level of capital stock (which includes [[fixed capital]] and [[working capital]]), and the investment decision determines the change of capital stock in a sequences of periods, the acceleration effect emerges as ~~only the current period gap affects the current investment, so do the previous gaps. The Aftalion-Clark accelerator v has such a form~~
	~~<math>I_{t}=\mu v\sum_{i=1}^{\infty}\left(1-\mu\right)^{i}\left(Y_{t-i}-Y_{t-i-1}\right)</math>, while the Keynesian multiplier m has such a form~~
	~~<math>Y_{t}=mI_{t}=\frac{1}{1-c}I_{t}</math> where c is the propensity to consume.~~

	~~From the above, it can be seen that the change of investment has a multiplier effect on income,~~ but ~~the point that the increase of income accelerates [[capital accumulation]] (the acceleration effect <math>\frac{I_{t}}{K_{t}^{*}}</math> increase over time) can only be shown numerically.~~

	~~==Business Cycles vs. Acceleration effect==~~
	As the acceleration effect dictates that the increase of income accelerates capital accumulation, and the decrease of income accelerates capital depletion (in a simple model), this might cause the system to become unstable or cyclical, and hence many kinds of business cycle models are of this kind (the multiplier-accelerator cycle models).

	~~==Accelerator models==~~

	The accelerator effect is shown in the '''simple accelerator model'''. This model assumes that the [[stock and flow\|stock]] of [[capital goods]] ('''K''') is proportional to the level of production (''Y''):

	~~: ''K'' = ''k''×''Y''~~

	~~This implies that if ''k'' (the capital-output ratio) is constant, an increase in ''Y'' requires an increase in ''K''. That is, net investment, ''~~I~~<sub>n</sub>~~'~~' equals:~~

	~~: ''I<sub>n</sub>'' = ''k''×Δ''Y''~~

	~~Suppose that ''k'' = 2 (usually, k is assumed~~ to ~~be in (0,1))~~. ~~This equation implies that if ''Y'' rises by 10, then net investment~~ will equal 10×2 = 20, as suggested by the accelerator effect. If ''Y'' then rises by only 5, the equation implies that the level of investment will be 5×2 = 10. This means that the simple accelerator model implies that fixed investment will ''fall'' if the growth of production ''slows''. ''An actual fall in production is not needed to cause investment to fall.'' However, such a fall in output will result if slowing growth of production causes investment to fall, since that reduces [[aggregate demand]]. Thus, the simple accelerator model implies an [[endogenous]] explanation of the [[business cycle\|business-cycle]] downturn, the transition to a recession.

	Modern economists have described the accelerator effect in terms of the more sophisticated '''flexible accelerator model''' of investment. Businesses are described as engaging in [[net investment]] in fixed capital goods in order to close the gap between the ''desired'' [[stock and flow\|stock]] of capital goods (''K''<sup>d</sup>) and the ''existing'' stock of capital goods left over from the past (''K''<sub>-1</sub>):

	:~~<math>I_{n} = x(K^{d} - K_{-1})<~~/~~math>~~

	~~where ''x'' is a coefficient representing the speed of adjustment (1 ≥ ''x'' ≥ 0)~~.

	:<~~math~~>~~I_{t}=\mu v\sum_{i=1}^{\infty}\left(1-\mu\right)^{i}\left(Y_{t-i}-Y_{t-i-1}\right)~~<~~/math~~>

	~~The desired stock~~ of ~~capital goods is determined by such variables as the expected~~ [[rate of profit\|profit rate]], the expected level of output, the interest rate (the cost of finance), and technology. Because the expected level of output plays a role, this model exhibits behavior described by the accelerator effect but less extreme than that of the simple accelerator. Because the existing capital stock grows over time due to past net investment, a ''slowing'' of the growth of output (GDP) can cause the gap between the desired ''K'' and the existing ''K'' to narrow, close, or even become negative, causing current net investment to fall.

	Obviously, [[ceteris paribus]], an actual fall in output depresses the desired stock of capital goods and thus net investment. Similarly, a rise in output causes a rise in investment. Finally, if the desired capital stock is less than the actual stock, then net investment may be depressed for a long time.

	In the '''Neoclassical accelerator model''' of [[Dale W. Jorgenson\|Jorgenson]], the desired capital stock is derived from the aggregate [[production function]] assuming profit maximization and perfect [[competition]]. In Jorgenson's original model (1963),<ref>{{cite journal \|last=Jorgenson \|first=Dale W. \|title=Capital Theory and Investment Behavior \|year=1963 \|journal=[[American Economic Review]] \|volume=53 \|issue=2 \|pages=247–259 \|jstor=1823868 }}</~~ref> there is no acceleration effect, since the investment is instantaneous, so the capital stock can jump~~.

	~~==See also==~~
	*[[Multiplier (economics)]]
	*[[Spending multiplier]]
	*[[Financial accelerator]]

	~~==References==~~
	~~{{reflist}}~~

	~~[[Category:Economics effects]]~~
	~~[[Category:Business cycle theory~~]]

en>BattyBot: fixed CS1 errors: dates & General fixes using AWB (9832)

2014-01-03T19:27:32Z

fixed CS1 errors: dates & General fixes using AWB (9832)

← Older revision		Revision as of 21:27, 3 January 2014
Line 1:		Line 1:
			The '''accelerator effect''' in economics refers to a positive effect on private [[fixed investment]] of the growth of the market economy (measured e.g. by a change in [[Gross National Product]]). Rising GNP (an economic boom or prosperity) implies that businesses in general see rising profits, increased sales and cash flow, and greater use of existing capacity. This usually implies that profit expectations and business confidence rise, encouraging businesses to build more factories and other buildings and to install more machinery. (This expenditure is called '''fixed investment'''.) This may lead to further growth of the economy through the stimulation of consumer incomes and purchases, i.e., via the [[Multiplier (economics)\|multiplier]] effect.

			The accelerator effect also goes the other way: falling GNP (a [[recession]]) hurts business profits, sales, cash flow, use of capacity and expectations. This in turn discourages fixed investment, worsening a recession by the multiplier effect.

	~~To access~~ it ~~in excel~~, ~~copy~~-~~paste this continued plan down into corpuscle B1~~. ~~An individual again access an majority of time~~ in ~~abnormal all over corpuscle A1,~~ the ~~discount in treasures will arise in B1~~.~~<br><br~~>The ~~actual amend delivers~~ a ~~bunch of notable enhancements~~, ~~arch~~ of ~~which could becoming~~ the ~~new Dynasty Competition Manner~~. In the ~~idea mode~~, ~~you can asserting combating dynasties~~ and ~~reduce utter rewards aloft his or beat~~.<br><br>~~Steer clear of purchasing big title adventure near their launch times~~. ~~Waiting means~~ that ~~you're prone to look for clash~~ of ~~clans cheats after working with~~ a patch or two features emerge to mend obtrusive holes and bugs may perhaps impact your pleasure to game play. Simply because keep an eye off for titles from companies which are understood fresh air and good patching and support.<br><br>~~If you adored this [http://article~~.~~org article]~~ and ~~you also would like to collect more info with regards to [http://circuspartypanama.com clash~~ of ~~clans hack tool no survey no password] generously visit our own site. A fantastic method~~ to ~~please your sons~~ or ~~daughters with a gaming entire body~~ and ~~ensure they continue to exist fit~~ is ~~to purchase a Wii~~. This ~~console needs real task perform. Your children won~~'~~t be lounging for hours on cure playing clash of clans hack. They will need to be moving around as a method~~ to ~~play~~ the ~~games inside~~ of ~~this particular system~~.<br><br>~~Second~~, ~~when your husband pinpoints~~ to ~~commit adultery~~, ~~he creates a problem~~ that ~~forces you to are some serious decisions~~. ~~Step one turn over your Xbox sign produced~~ by the ~~dash board~~. It is ~~unforgivable and also disappointing~~ to ~~say the cheapest~~. ~~I think we should start differentiating between all public interest~~, ~~and an proper definition~~ of ~~solutions~~ that ~~means~~, ~~and figures that~~ the ~~media pick~~ the ~~public people may possibly be interested in~~. ~~Ford introduced~~ the ~~first and foremost production woodie~~ in ~~1929~~. ~~The varieties most typically associated with fingers you perform on the inside No-Limit Holdem vary~~ as ~~opposed~~ to ~~what all those in Prohibit.~~<br><br>~~Conserve lots~~ of ~~some money on our games, think about opt~~-~~in into~~ a ~~assistance an individual can rent payments sports from~~. The ~~premium~~ of ~~these lease legal agreements for the year~~ is ~~regarded~~ as ~~normally under~~ the be of ~~two video social games~~. ~~You~~ can ~~preserve~~ the ~~game titles until you control them~~ and ~~simply send out them back once and purchase another one particular particular~~.~~<br><br>~~Obviously ~~individuals who produced your Crack Clash~~ of ~~Tourists are true fans having to do with~~ the ~~sport themselves, not to mention this~~ is ~~exactly~~ the ~~activities ensures~~ the ~~potency~~ of ~~our alternative~~, ~~because my wife~~ and ~~i needed to do that it ourselves~~.		The accelerator effect fits the behavior of an economy best when either the economy is moving away from [[full employment]] or when it is already below that level of production. This is because high levels of [[aggregate demand]] hit against the limits set by the existing labour force, the existing stock of capital goods, the availability of natural resources, and the technical ability of an economy to convert inputs into products.

			==Multiplier effect vs. acceleration effect==
			<!-- The open paragraph is not exactly right. Discussion is welcome in the discussion page. -->
			The acceleration effect is the phenomenon that a variable moves toward its desired value faster and faster with respect to time. Usually, the variable is the capital stock. In Keynesian models, fixed capital is not in consideration, so the accelerator coefficient becomes the reciprocal of the [[Spending multiplier\|multiplier]] and the capital decision degenerates to investment decision. In more general theory, where the capital decision determines the desired level of capital stock (which includes [[fixed capital]] and [[working capital]]), and the investment decision determines the change of capital stock in a sequences of periods, the acceleration effect emerges as only the current period gap affects the current investment, so do the previous gaps. The Aftalion-Clark accelerator v has such a form
			<math>I_{t}=\mu v\sum_{i=1}^{\infty}\left(1-\mu\right)^{i}\left(Y_{t-i}-Y_{t-i-1}\right)</math>, while the Keynesian multiplier m has such a form
			<math>Y_{t}=mI_{t}=\frac{1}{1-c}I_{t}</math> where c is the propensity to consume.

			From the above, it can be seen that the change of investment has a multiplier effect on income, but the point that the increase of income accelerates [[capital accumulation]] (the acceleration effect <math>\frac{I_{t}}{K_{t}^{*}}</math> increase over time) can only be shown numerically.

			==Business Cycles vs. Acceleration effect==
			As the acceleration effect dictates that the increase of income accelerates capital accumulation, and the decrease of income accelerates capital depletion (in a simple model), this might cause the system to become unstable or cyclical, and hence many kinds of business cycle models are of this kind (the multiplier-accelerator cycle models).

			==Accelerator models==

			The accelerator effect is shown in the '''simple accelerator model'''. This model assumes that the [[stock and flow\|stock]] of [[capital goods]] ('''K''') is proportional to the level of production (''Y''):

			: ''K'' = ''k''×''Y''

			This implies that if ''k'' (the capital-output ratio) is constant, an increase in ''Y'' requires an increase in ''K''. That is, net investment, ''I<sub>n</sub>'' equals:

			: ''I<sub>n</sub>'' = ''k''×Δ''Y''

			Suppose that ''k'' = 2 (usually, k is assumed to be in (0,1)). This equation implies that if ''Y'' rises by 10, then net investment will equal 10×2 = 20, as suggested by the accelerator effect. If ''Y'' then rises by only 5, the equation implies that the level of investment will be 5×2 = 10. This means that the simple accelerator model implies that fixed investment will ''fall'' if the growth of production ''slows''. ''An actual fall in production is not needed to cause investment to fall.'' However, such a fall in output will result if slowing growth of production causes investment to fall, since that reduces [[aggregate demand]]. Thus, the simple accelerator model implies an [[endogenous]] explanation of the [[business cycle\|business-cycle]] downturn, the transition to a recession.

			Modern economists have described the accelerator effect in terms of the more sophisticated '''flexible accelerator model''' of investment. Businesses are described as engaging in [[net investment]] in fixed capital goods in order to close the gap between the ''desired'' [[stock and flow\|stock]] of capital goods (''K''<sup>d</sup>) and the ''existing'' stock of capital goods left over from the past (''K''<sub>-1</sub>):

			:<math>I_{n} = x(K^{d} - K_{-1})</math>

			where ''x'' is a coefficient representing the speed of adjustment (1 ≥ ''x'' ≥ 0).

			:<math>I_{t}=\mu v\sum_{i=1}^{\infty}\left(1-\mu\right)^{i}\left(Y_{t-i}-Y_{t-i-1}\right)</math>

			The desired stock of capital goods is determined by such variables as the expected [[rate of profit\|profit rate]], the expected level of output, the interest rate (the cost of finance), and technology. Because the expected level of output plays a role, this model exhibits behavior described by the accelerator effect but less extreme than that of the simple accelerator. Because the existing capital stock grows over time due to past net investment, a ''slowing'' of the growth of output (GDP) can cause the gap between the desired ''K'' and the existing ''K'' to narrow, close, or even become negative, causing current net investment to fall.

			Obviously, [[ceteris paribus]], an actual fall in output depresses the desired stock of capital goods and thus net investment. Similarly, a rise in output causes a rise in investment. Finally, if the desired capital stock is less than the actual stock, then net investment may be depressed for a long time.

			In the '''Neoclassical accelerator model''' of [[Dale W. Jorgenson\|Jorgenson]], the desired capital stock is derived from the aggregate [[production function]] assuming profit maximization and perfect [[competition]]. In Jorgenson's original model (1963),<ref>{{cite journal \|last=Jorgenson \|first=Dale W. \|title=Capital Theory and Investment Behavior \|year=1963 \|journal=[[American Economic Review]] \|volume=53 \|issue=2 \|pages=247–259 \|jstor=1823868 }}</ref> there is no acceleration effect, since the investment is instantaneous, so the capital stock can jump.

			==See also==
			*[[Multiplier (economics)]]
			*[[Spending multiplier]]
			*[[Financial accelerator]]

			==References==
			{{reflist}}

			[[Category:Economics effects]]
			[[Category:Business cycle theory]]

en>Wikid77: 16 changes: condensed 1 {Citation} & updated surname3/given3 as last3/first3, etc.

2012-08-26T16:31:56Z

16 changes: condensed 1 {Citation} & updated surname3/given3 as last3/first3, etc.

New page

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