• GENERAL MANPOWER –MODIFIED ERLANG TWO PHASE MACHINE SYSTEM WITH EXPONENTIAL PRODUCTION AND GENERAL RECRUITMENT, SALES AND REPAIR

Abstract

Two Manpower planning models with different recruitment patterns are studied. In this paper, the machine attended by manpower has modified Erlang phase 2 life time distribution with two phases. Two models are treated.  In model 1, when the system fails the vacancies caused by the departure of employees are filled up one by one, when the manpower machine system is in operation, products are produced one at a time when inter production time has exponential distribution and sales time has general distribution. In Model 2, when the operation time is more than a threshold time, the recruitments are done all together and when it is less than the threshold, the recruitments are done one by one.  Joint transforms of the variables, their means and the covariance of operation time and recruitment time with numerical results are presented.