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:




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´ ;

´ ();

´ ();

´ ().

 

´ ;

´ ;

´ ;

´ .

 

 

 

(paybackperiod)

PB= /

 

(Discounted paybackperiod)

DPB DPB

DBP: ∑ Investmentst/(1+r)t-1 = ∑Ft /(1+r)t-1

t=1 t=1

:

Investmentst t;

CFt t;

r .

 

(netpresentvalue)

N N

NPV= - ∑ Investmentst/(1+r)t-1 + ∑Ft /(1+r)t-1

t=1 t=1

N .

NPV<0,

NPV >=0, ( )

 

(profitabilityindex)

 

PI= / ()

. , , , .

 

IRR (internal rate of return)

N N

0 = - ∑ Investmentst/(1+IRR)t-1 + ∑Ft /(1+IRR)t-1

t=1 t=1

IRR . , IRR, . ( , .. , IRR)

NPV, IRR, PI, CC :

NPV>0, IRR>CC PI>1;

NPV<0, IRR<CC PI<1;

NPV=0, IRR=CC PI=1, , .

 

, -

| 24 2009 18:07 :

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