In this work, time domain analysis is used to solve Adler’s equation in order to obtain the required time, for an oscillator under external injection, reaching the steady-state condition. Mathematical approach has been applied to fully describe the transient of frequency acquisition in injection-locked LC and Ring oscillators considering their time-varying nature. Then, the analysis is verifie...

This paper presents the theoretical analysis of the acquisition phase of a chaos-based DS-CDMA system in the presence of fast fading. A statistical approach is taken to accurately model the acquisition phase with fast fading. Using this statistical approach, the main performance criteria for the acquisition phase namely probabilities of detection and failure are derived. The analytical derivati...

conclusions the role of exercise is greater in the retention than the acquisition phase for recalling past experiences. background stress induced by sleep deprivation can cause degradation of learning in the acquisition phase, and low-intensity exercise can prevent the negative effects of stress. results the results showed that, after seven days of aerobic exercise on a treadmill, the experimen...

the aim of this study was to evaluate blocked, random, gradual incremental and gradual decremental practice schedules on the acquisition and retention of different types of basketball pass (overhead, hand chest , single arm with dominate hand) in 8-10-year-old girls. for this purpose, 60 female students of second, third and fourth grade of elementary school were voluntarily selected and randoml...

We propose a new scheme for rapid acquisition of PN signals in direct-sequence spread spectrum (DS/SS) systems by estimating the phase of the received PN signal with the use of an auxiliary signal. The auxiliary signal can be generated by a sum of the phase shifted PN signals. The phase of the incoming PN signal is estimated using the properties of cross correlation between the PN signal and th...

the purpose of this investigation was to study the effect of variability of practice and age on retention and transfer of the over-arm throwing accuracy in children. khalajy and shafizadeh’s (1383) test of over-arm throwing accuracy was adjusted and used in this study. 48 right-handed female children (16 children in each age group of 4, 5 and 6 years old) were selected voluntarily. each age gro...

the present research examined the effect of different feedbacks such as blocked, random and specialized to the most difficult part of a task on acquisition and retention of badminton high service. at first, 10 expert badminton players performed 10 trial high service and 10 with probe technique to determine the most difficult part of the high service. the difference between the two scores define...