June 2007 Vol.296 Monthly Magazine of KOTSA www.kotsa.or.kr 2007 JUNE
CONTENTS SPECIAL THEME 04 09 11 TOGETHER STEP 14 16 20 24 26 28 30 32 SAFE STEP 38 40 42 46 48 50 54 56 60 63 66 LIFE STEP 68 72 74 78 80 82 87 88 90 93 94 95 2007.06 Monthly Magazine of KOTSA www.kotsa.or.kr
Special Theme 2007. 06
04 05
Special Theme 2007. 06
06 07
Special Theme 2007. 06
Special Theme 08 09
Special Theme 2007. 06
Special Theme 10 11
Special Theme 2007. 06
Together Step 14 16 20 24 26 28 30 32
2007. 06
14 15
2007. 06
16 17
2007. 06
18 19
2007. 06
20 21
2007. 06
22 23
24-25ˆ ˆ 2007.6.5 11:6 PM ` 1 mac-3 2007. 06
24-25ˆ ˆ 2007.6.5 11:6 PM ` 2 mac-3 24 25
2007. 06
26 27
2007. 06
28 29
2007. 06
30 31
2007. 06
32 33
2007. 06
34 35
2007. 06
Safe Step 38 40 42 46 48 50 54 56 60 63 66
2007. 06
38 39
2007. 06
m(kr lr - kf lf) l R = [ 1 + V 2 ] kf kr l 2 s m kgs 2 /m kf, kr lf, lr l (lf + lr) R s (kr lr - kf lf) R (kr lr - kf lf) > 0 (kr lr - kf lf)< 0 kr kf lr >lf lr <lf R0m R/R0 R/R0 R0 = lf lr lf lr 40 41
2007. 06
42 43
2007. 06
44 45
2007. 06
46 47
48-49 º 2007.6.5 11:20 PM ` 1 mac-3 2007. 06
48-49 º 2007.6.5 11:20 PM ` 2 mac-3 48 49
2007. 06
50 51
2007. 06
52 53
2007. 06
54 55
57 56
2007. 06
58 59
2007. 06
60 61
2007. 06
63 62
2007. 06
64 65
2007. 06
Life Step 68 72 74 78 80 82 87 88 90 93 94 95
2007. 06
68 69
2007. 06
70 71
2007. 06
72 73
2007. 06
74 75
2007. 06
76 77
2007. 06
78 79
2007. 06
80 81
2007. 06
82 83
2007. 06
84 85
2007. 06
86 87
2007. 06
88 89
2007. 06
90 91
2007. 06
92 93
2007. 06
4 2 5 8 0 1