achieving optimal production cycle time for improving manufacturing processes is one of the common problems in production planning. during recent years, different approaches have been developed for solving this problem, but most of them assume that mean quality characteristic is constant over production run length and sets it on customer’s target value. however, the process mean may drift from ...

The paper studies the optimal production run length for a deteriorating production system. The optimal warranty cost is determined by a balance between the warranty cost of the manufacturer and the buyer during its warranty period. It is assumed that the elapsed time until the production process shift is age dependent and arbitrarily distributed. The objective is to minimize the total cost per ...

in this paper, we proposed a data-hiding scheme based on run length matrix. in a previously proposed method, a technique based on texture classification was introduced where four statically features extracted from run length matrix; then best cover images are selected based on these features. using appropriate features for comparing images from undetectability viewpoint, guarantees, less detect...

Imperfect quality items are unavoidable in an inventory system due to imperfect production process, natural disasters, damages, or many other reasons. The setup cost and production cycle time can be related in terms of process deterioration and learning and forgetting effects. Learning reduces production run length and setup cost, whereas deterioration and forgetting increases both. Keeping the...

In this paper, the author presented a modified Chen and Chung’s model considering that the process mean may not be equal to the target value when the process is in the in-control state. Taguchi’s asymmetric quadratic quality loss function will be applied in evaluating the product quality. Subsequently, the modified economic manufacturing quantity (EMQ) model based on modified the Chen and Chung...

The FM-index is a succinct text index needing only O(Hkn) bits of space, where n is the text size and Hk is the kth order entropy of the text. FM-index assumes constant alphabet; it uses exponential space in the alphabet size, σ. In this paper we show how the same ideas can be used to obtain an index needing O(Hkn) bits of space, with the constant factor depending only logarithmically on σ. Our...

explicitly evaluable functions. For example, the M-ary error probability is expressed as a quadrature in Lindsey's equation (17), PE(M) = 1 [I-2 lrn Qi(h, $;) exp (-g) dz] z/d eeL s m =22/;;moe-(1+d)s~41-'2@3(1, 1 + M, s, sL) d.s, (5) where, following Lindsey, h2/2 has been replaced by L to simplify the notation. From the series form of @3, it is obvious that the integral gives an additional do...

This paper studies the optimal production run length for the economic manufacturing quantity model with maintenance, scrap and rework actions under the imperfect production system where the process state is classified as either in-control or out-of-control. Suppose that a production process starts to produce in an in-control state, however, after a period of time, the process may evolve from th...