.
( ) N0 , . . :
- P(t);
- f(t) a(t);
- l(t);
- T.
, .
P(t) = P(T>t), (4.2.1)
T - ; t - , .
(t) = [N0-n(t)] / N0, (4.2.2)
N0 - (); n(t) - t; (t) - . () N0 (t) P(t). Q(t).
, . ,
Q(t)=P(T£t), (t)=n(t)/N0, Q(t)=1-P(t). (4.2.3)
() , .
(t) = n(Dt) / N0Dt, (4.2.4)
n(Dt) - (t‑Dt)/2 (t+Dt)/2.
( ) .
P(t) = 1 - Q(t), P(t) = 1 - . (4.2.5)
, .
(t) = n(Dt) / (NDt), (4.2.6)
N = (Ni + Ni+1) / 2 - Dt; Ni - , Dt; Ni+1 - Dt.
l(t)
l(t) = f(t) / P(t). (4.2.7)
P(t) = xp . (4.2.8)
.
, T ( ):
|
|
M[t] = Tc = . (4.2.9)
t P(0)=1, P(¥)=0,
Tc = . 4.2.10)
. (4.2.11)
ti - i- ; N0 - .
(4.2.11), . . ni i- ,
. (4.2.12)
(4.2.12) ti m :
ti = (ti-1 + ti)/2, m = tk / Dt,
ti-1 - i- ; ti - i- ; tk - , ; Dt = ti‑1 ‑ ti - .
, , , . " ".
. . , .
f(t) a(t). , , - .
. , :
- ;
- ;
- ;
- ;
- .
- , .
. :
- , , , ;
- ;
- .