e a
a
e ,
,
2
1
3
, a
,
,
;
,
;
,
,
,
. .
, a a
,
a .
. W
,
a
. a
a a
,
a
,
.
101
a
.
.
. 6
, 0.3—0.4
a .
a — a
. a
a
, —a
.
a 4
.
,
, a
a
.
a
,
. a
,
. W
a
a
.
a a . , .
e
, , 7,
, ,
50 a
,
a
a ,
.
.
.
,a
a
. .
a ,
,
a
a
.
.
,
.
. .
. ,
a
. a a
. .
,
a . a2
,
,
a , ,
,
,
100
. . ,
. 22 1990
8
a 2
Downloaded by: NYU. Copyrighted material.
a a
. a
238
22
.2
.4
.3
a
.5
1 .
238
1387
2 .
.
. .
.
5 3
. . 298
.
. .
428
4 ,
:
a ,
, a
a
301
5 a . .
.
.
888
d a 79 7 8
.
563 . , . a
a
.
205
; 129
199
.
9
. a
.
.
. .
. 305
95
Downloaded by: NYU. Copyrighted material.
.1 .1 3