20041445

BOD

(E : , Q : , t :)

BOD . BOD BOD .BOD . BOD x . .

BOD () .

, 1 BOD () .

, , BOD . . (, , )

D.O.

, BOD-D.O. . . ( u : , )

DO

V(dc/dt) = + ( - ) - CBOD, NBOD() - + - ( ) ( V: , c: DO . )

K1 L dL/dt .

( L0: , K1: )

, .

(D: , K2: ) Streeter-Phelps .

- , , . - . , , . - . , , 1 .

(Oxygen Sag Curve) .

,

O'Connor and Dobbins (1958) - , .

-

( S: , Dm: , D: U: ) Chezy 17, 17 .

Owens, Edwards and Gibbs(1964) 0.03 - 1.5m/s, 0.1 - 3.35m .

Isaacs(1964)

Thackston and Krenkel(1966) Tennesee .

Churchill, Elmono and Buckingham(1962) .

Streeter-Phelps NBOD, SOD, (P-R), DO . , , ( ) .

[] DO . CBOD (L), SOD (S). (kn) NBOD, (kd), (ka), CBOD (ks), (P-R)

- , (R-P) DO . DO . (R>P) . (R-P) . ( ) R>P .

DO 1 . ( = - )

(H: )

, . L N .

.

, CBOD(L0), NBOD(N0), SOD(S0), (R-P), BOD(Lb)

[] / source sink .

[] / DO source sink .

Fourier .

(7-, 10 1 ) . , . DO . () . DO .

DO (DO ) . (DO) .

. , . . , t=0 () () .

x=0 . .

1 1 , Fourier .

.

A, B .

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

. , . , , . .

1 1 ( -) - . () () . x y .

x , y x . x x . .

0 . F(x) .

( S: , S2: ) . , .

, .

Monte Carlo Monte Carlo . . ( ) . . ( ) . , .

. () . Monte Carlo , . (), , . , .

. , . .

y .

Monte Carlo 1 . , .

Monte Carlo .1. , , .2. . . 3. . 4. 2 3 .( 100-200). 5. .

:

:

1 2 1 , , , .

1 .

p q . .

y(x)

. y(x) .

R R . 1

M(x, y)=-f(x, y) N(x, y)=1 . A

A(x, y(x)) x .

y(x) M + Ny' =0 .

. y x . . .

y 0

. .

Laplace . , F(t) f(s) Laplace .

1 . Euler, Runge-Kutta 1 Euler, Runge-Kutta .

. , . . , , , , , .

, , , . Web .

. - - . - . - . - .

, . , , ( ), , GIS/LBS, /, RFID, SoC MEMS