臺大管理論叢 NTU Management Review VOL.29 NO.1

Earnings Informativeness of Long-Lived Assets Impairment Recognized and Reversals 214 Table 2 Year and Industry Composition TEJ Industry name 2004 2005 2006 Code obs im rev obs im rev obs im rev 11 Cement 7 1 0 7 4 0 7 0 0 12 Food 24 2 0 24 6 0 24 0 0 13 Plastics 24 0 0 26 4 0 26 3 0 14 Spin & Fiber 52 7 0 51 16 2 51 12 0 15 Electric Machinery 52 3 0 57 8 0 58 12 1 16 Electric Appliance 15 2 0 14 4 1 14 3 0 17 Chemical 56 4 0 64 11 0 69 6 1 18 Glass & Ceramics 6 2 0 4 1 0 4 0 0 19 Paper 7 0 0 7 1 0 7 0 0 20 Steel 35 7 0 35 10 1 36 4 0 21 Rubber 10 0 0 10 4 0 10 1 0 22 Automobile 4 0 0 5 1 0 5 1 0 23 Electronics & Telecommunications 467 38 3 539 105 9 581 70 8 25 Construction 67 15 0 66 28 3 65 12 0 26 Shipping 22 0 0 21 1 0 21 0 0 27 Tours 14 0 0 15 4 0 15 1 0 29 Merchandize & Trade 19 5 0 22 3 2 23 4 0 32 Software 8 2 0 10 4 0 10 2 0 97 Oil &Gas 12 0 0 12 3 1 12 2 0 99 Comprehensive 58 7 1 61 18 1 63 12 0 Total 959 95 4 1,050 236 20 1,101 145 10 Legends: obs: total observations within X industry in year t . im: impaired observations within X industry in year t . rev: reversal observations within X industry in the next year t +1.