英语翻译This section describes the sample,data sources and varia

英语翻译
This section describes the sample,data sources and variable measurement.All data for this study are drawn from Standard & Poor’s (2004) ExecuComp database.The sample consists of panel data from 455 US firms and covers the period 1996-2002.This sample is obtained from an initial sample of 2,394 US firms after imposing the condition that the CEO tenure extended over the entire period of 1996 to 2002,with full years of tenure in the period
1997-2002,and at least 6 months of tenure in 1996.This condition is imposed to guarantee homogeneity in the pay-performance relationship and to control,to some degree,for human capital heterogeneity within firms.Panel A of Table 1 presents the sample selection process.
Detailed information about industry composition of the sample is presented in Panel B of Table 1.The sample encompasses 25 industries,with 2-digit SIC ranging from 01 to 99.Electrical equipment is the industry with the largest sample representation,with 42 firms or about 9.2 percent of the sample,followed by ‘insurance and other financial services’ and services,each with 32 firms or about 7 percent of the sample,and the chemical industry with 31 firms or about 6.8 percent of the sample.The industries with the smallest sample representation are mining with 4 firms,about 0.9 percent,and toy manufacturing and construction,each with 5 firms,accounting for approximately 1.1 percent of the sample.

本节描述了样本,数据来源和变量的测量.本研究的所有数据都来自标准普尔（2004）ExecuComp数据库.样本包括来自455美国公司的面板数据,涵盖了1996-2002年期间.这个范例是从2394个美国公司的初始样本,条件是CEO任期在1996至2002年期间并且任职期间满二年,在1997-2002年任职满整年,并在至少6个月的任期于1996年.这个条件是要保证实行工资单中的同质性和性能的关系来控制,在一定程度上对企业内部人力资本的异质性.面板表1给出了一个样本选择过程.有关行业的样本构成的详细资料载于表1的B小组.样品包括2位数字的范围从01到99碳化硅25个行业.电气设备是与最大的样品的代表性行业,或约42个企业的样本百分之9.2的'保险和其他金融服务'和服务,其次,32公司或约7百分之每个样品,和化学工业大约有31个公司或百分之6.8的样本.用最小的样品代表性的行业包括采矿与4家企业,约0.9个百分点,玩具制造业和建筑业,每5个公司,约1.1样本占百分之.