The purpose of this study is to share of Pleasure seeking, positive affect, negative affect, and sense of self-efficacy in relapse to drug. This study design was Descriptive and correlational. The study population consisted of all addicts return to a drug relapse occurred in less than one year And referred to addiction treatment centers in Tehran in 1395 was the 8th District Improved convenient...

the subjects of the study are only the tefl teachers and students at gilan university. to obtain the desired data, a questionnaire which was based on the theories and disecussions gathered, was used as the main data gathering instrument. to determine the degree of relationship between variables, covariance and pearson product moment correlation coefficient were the formulas applied. the data we...

a significant problem in multicarrier communication systems is the necessity to reduce the value of papr (peak-to-average power ratio) of transmitting signal. in this thesis we study the effect of the system parameters such as coding and modulation types on papr and ultimate ber in a mc-cdma system. in this study we consider fading channel as well as the nonlinearity of transmitter’s amplifier ...