1) workers over the age of 20 years. 2.) to communicate the meaning and understanding of the language in Thailand. There are 3) work experience not less than 6 months. 4) agree to cooperate in research studies.
1) workers aged over 20 years, 2) can communicate and understand the meaning Thailand 3) Have experience of not less than six months, four) voluntarily participated in the study.
1) workers older than 20 years 2) can communicate meaning and comprehension 3) work experience not less than a month 4 Thermodynamic 6 ) agree to cooperate in research .