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֪ⲻˮƽлб
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ҽйѧԺһͨоԱΪУѧλĵˣ
2005717չУѧԺ⸱ڸţѧ¸ڵ
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Ŭͨˣͼҵıҵĳ׶ɱֶα¶ֿɱº󣬴
˻õѧߡѧڼз̰վҥԻڡ
޷һһܡڵʦĴȺȰ裬Ҳһһܡ
2004·֮ʱ׫дһЩ˵ϣύй쵼
ھЩϼĸڵķҡ˵
ģ߱¡ţеԩ綼¡

2005-7-17

ģ

2004꣬ҵػûԱѧһƪʿĽ󣨵ʱ֪
ǻѧԺ⸱ڣʦΪһǽڣʱָòʿ
Ĵ󣺵һǿѧ󣻵ڶгϮΪ
ǵԵģҲԴ󡣵ʱĲܴ磬Ҫ޸Ĵ
һרҶеѧң
ѧģԭ򣬱ʾȨǵֱǣ

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ѡһҪѧǰ⣬ͼøԷ˼롢
ʶϵͳһѧ⣬ԵĴ£ҲĶ˴ףӦ
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۲ܳ˱Ĳύ硣
2.	ĴڳϮ󣬵ЩϮĵҪۣЩ
⣩ûֱӹϵΪԿҲǲԾġҪǸ
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Computers, Enviroment and Urban System, Physican AD¡
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ѧѧԺίҶԲʿѧλġγϵͳĿռ临о
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2005717գд˿ʼǷš18գµĲʿΪߵ
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http://www.plansky.net/bbs/viewthread.php?tid=866йѧԺ
ооվǶǱѧıҵҪ˵
һ

¸ڲʿĵҪɹͬʱҲ۵Ļν
ɡɡ֤ģ֤ģμԭģ
ѧŲԭм򻯣

ʱϵͳ״̬x,ydx/dt=f(x,y), dy/dt=g(x,y)
f(x,y)=0, g(x,y)=0߻õ
dx/dt=ax,  dy/dt=by
߼д dx/dt/ (dy/dt)=ax/by, ߵõν

dy/dt =(b/a)(y/x)(dx/dt)
ߺĵĴǸƵġ
ʵdx/dt=f(x,y), dy/dt=g(x,y) f(x,y)=0, 
g(x,y)=0õ
dx/dt=ax+cy,  dy/dt=hx+byνɡӦ
dy/dt =( hx+by)( ax+cy)(dx/dt)
ĻߺණܳˡΣf(x,y)=0, 
g(x,y)=0
dx/dt=0, dy/dt=0, ֮(dx/dt)/(dy/dt)=0/0
ûģߡ֤νٶȫܳ
ɴ˵õĴҲܳ

˵һΣĴ󣬱ѧƣȻϵκһһ
꼶ѧѧͿԷ֡˵ⲻѧˮƽΪʲô
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УҲ֪ѧԳϮôģ

зѧҡ֪ѧҡͷѡ
ء̽󲻵ò޹ɡԼȴԷֽ
p3031ʵ֪ЩšִƵġѧҡ
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ע˵̵֤ Bertalanffy  L  von  
General  System Theory  FoundationsDevelopment  and  Applications
New YorkGeorge Braziller,Inc1968ҵͼҲ鲻Ȿ
飬֪λѧ߿԰æŵߵԭ֤ģ
Ϊ֤ŵŵı

У֪ƪĲˮƽܻĵ
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ƽĵѧңӿм̳ɡ޺ͥͨʽ̹ң
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ʦǵѧϵʦĴѧֳܷ¸ڲʿĵ
ѧҸѧϽҲֳᷢ¸ڵĵѧرǵ
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ѧУˣЩ

УйѧԺʱҶμ㣬ƽ׽ˣðд
šͨŸѣ

һйĲʿѧλҪϽһЩϣѧͷ

ڶѧǶѧҲӦͬרңѧ
ʹʫش

˵һ飺

֪ⲻˮƽлб

 

2005-7-23

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дˣѧһλͬ־ȰϢˣʦھѡԺʿ
СΧұ绤û뵽ѧͬʸң⸱ڸѧ
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2005627գйǺξֽеڶʮμѧ
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Ϊʵȫ潨СĺΰĿҹĳԶչṩɿԴԴ֤

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(XYS20050726)

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2005괺ֱڣɡ̬ˡ̬ıԲ԰԰ܵ
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23-07-2005

(XYS20050726)

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廪˲־ĵ

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2005-07-13齭

ֻǻῼԵäʲôᶯ֣֪ʶȤ
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