Pada Proyek Pembangunan Jalur Ganda Jalan Ka Lintas Selatan Jawa Km 49+500 Sd 52+500 Antara Mojokerto Solo (Paket JGMS-9) mengalami keterlambatan dikarenakan shopdrawing pengerjaan proyek belum disetujui. Akibat hal tersebut, perlu dilakukan optimasi percepatan waktu untuk mengejar dan mengestimasi pertambahan biayanya. Tugas akhir ini bertujuan mereduksi penyelesaian dengan mempercepat biaya s...

Recently, time-switch constraints have been introduced in the literature by Yang and Chen (2000). Basically, these constraints impose a specified starting time on the project activities and force them to be inactive during specified time periods. This type of constraints have been incorporated into the well-known discrete time/cost trade-off problem in order to cope with day, night and weekend ...

We develop a discrete-time approximation technique dealing with the time-cost trade-off problem in PERT networks. It is assumed that the activity durations are independent random variables with generalized Erlang distributions, in which the mean duration of each activity is a non-increasing function of the amount of resource allocated to it. It is also assumed that the amount of resource alloca...

The time - cost tradeoff problem is one of the most critical issues in the project scheduling field and so far, a lot of research has been done with a variety of quantitative and qualitative approaches on this subject. In this research, we intend to provide a two - objective mathematical model which balances crash and delay for activities. So that it provides the right tools for decision makers...

In reality, a seller (e.g., a supplier or a manufacturer) frequently offers his/her buyers trade credit (e.g., permissible delay in payment). Trade credit reduces the buyer's holding cost of inventory and hence attracts new buyers who consider it to be a type of price reduction. On the other hand, granting trade credit also increases the seller's opportunity cost (i.e., the loss of capital oppo...

Allocating and routing problems in the field of transportation engineering are generally solved using the objective function of minimizing transport cost. Transport risk is a main concern in hazardous material transportation, mainly dependent on the vision of decision makers (national and/or local authorities). In this research work, a trade-off approach has been proposed to determine the safes...

background: galactosemia is a congenital metabolic disorder that can damage the health of a newborn. screening is an important step to prevent and treat this condition. due to increasing health care costs and limited financial resources of health systems, the most suitable economic analysis tool should be applied. the aim of this study was to analyze the cost-utility of neonatal screening progr...