11.pdf

QL , 0 005; 00519e 005 . is no is be a in a we of do in of at 004).* +49 345 55 24740/+49 345 S. C. 1 +49 345 55 24776; +49 345 55 - 211 2005 QL be A is an is to of is a QL it is i 8.1 0 0is a QL to As in a QL or is be be in to is is is no in is on fur t 7 005; in QL of of a QL be to 005no In we an in in 2006) 630644we 10 0 an is of to is in in be is by is or a C do in C so We at QL QL is in a QL We a in in At a up in or of it is it be in a on it QL as it is to in we do to is is () of of ,us we , in to of a of of is a of of of QL we to be as it is by on a of )so by C. In is a of an be be a , is 0is be by be 0: 0is a at In Q is of be in so A be in 0is 0is a by a be at we 24% a 8% a of we of 11% 0% a if ). in 8% of a a or be is by QL be ), ),to to . is we a 9 (2006) 630644 631o we at a i, a is or a is a it be as ;:be to at of be it be in QL Of a C be a 0 as is at 0is be be to 0it be to in is in be as a we or ) is a of be as in of in 1) we to is QL he in is we it no is Of to of we or 00is he or QL is be in If it is be be . C. is we a of in a In of a to . a if he or as at if 0). in we to .(3)we in In we in In we 0(2) it is to we of Q 0) is it a do it to is a to a 9 (2006) 630644is no 0W0 as of a in we of a is a c is in C. in of 986; et 1988; 1988; et 1993;et 1996; et 2001; et 2001;2003)a is it in . an It be a is a be of do to , it is is in et 1994). of it is 2005). In a of to An in it is is it a in QL 0R 0at in . is if it is to . is a to in If is 7 ( a it on 0 a (of . of a is , X is an is a of in et 1979; et . is if it is be at of if a is in is no be a is no be at of = c an a as of as in Of = B = c, is in a so a a 500 700 is 500. is 2)i, be a j, d) of be In be 1) e) of i,be In ii;be 2) f) of i,be it 1000) = be 1000 = 500, of 3): It be i,of is of is i,. it is to a In be 0. N/LL a ) 216(_ i =1,.,m (be (3) ji,i,j+1i,216(_i =1,.,m, j =1,.,(i,us a