Fast-track construction projects have become more popular in recent years in response to growing industry demand. By allowing downstream construction activities to start with incomplete information from upstream design activities, fast-tracking (through overlapping) allows for shorter project duration at the expense of potential rework. This leaves practitioners with the challenge of determinin...

Increasing demand for wireless mobile communications, coupled with limited network resources, has motivated investigation into alternative e cient mobility management solutions. In this paper, we consider wireless PCS call setup protocols. We propose a Lightweight Location Lookup Protocol, which signi cantly reduces the network signaling and setup delay during call setup. As an alternative, we ...

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...

At the manufacturing plant or while products are being transferred from one supply layer to another, there is a considerable possibility of receiving damaged faulty items mixed in with non-defective commodities. This research focuses on and defective that shipped retailers by their suppliers. The retailer reworks make them non-defective, receives discount cost purchasing items. presented invent...

This paper aims to review the current practice in cost engineering, identify the scientific research challengesand suggest future direction of this area research. It has been developed based on both the outputs from the academic forum of cost engineering at Cranfield University in the UK and the state of art on cost engineering research. The promising future research subjects in Cost Engineerin...

This study explores simultaneous reduction strategies of lead time and setup cost in a two-stage supply chain model under trade-credit financing. Lead depends on variable production rate lot size. It consists setup, production, transportation which are shortened to reduce time. Although double safety factors considered avoid stock-out; but still backorders take place as the demand during is sto...

Market demand of the  perishable bakery  products are volatile. Hence, demand of such items are random variable. The most appealing demand distribution of such items is lognormal demand distribution. Using historical data, the parameters of lognormal distribution are obtained. But, there is a problem of overestimation or underestimation of the parameters. Fuzzy triangular numbers are used to ov...

The possible variability of project delay is useful information to understand and mitigate the project delay risk. However, it is not sufficiently considered in the literature concerning effort estimation and simulation in software product line development. In this paper, we propose a project delay simulation model by introducing a random variable to represent the variability of adaptive rework...

This paper illustrates the relationship between quality improvement, reorder point, and lead time, as affected by backorder rate, in an imperfect production process. To reduce the total system cost by optimizing the setup cost, lot size, lead time, reorder point, and process quality parameter simultaneously, we first consider that the lead time demand follows a normal distribution, then we appl...