Product defects and rework efforts due to flawed specifications represent major issues for a project’s performance, so that there is a high motivation for providing effective means that assist designers in assessing and ensuring a specification’s quality. Recent research in the context of formal specifications, e.g. on coverage and vacuity, offers important means to tackle related issues. In th...

The point of this note is to explain the ideas in the above research paper without using any mathematics or technical jargon (the original paper contains both). The intended reader is someone who is interested in economics and finance but who is not an academic researcher. I welcome your comments on the ideas below, whether you agree with them or not; and also on the write-up itself -for exampl...

Rework remains an ever-present reality in construction projects. How rework data is defined, its format, location, and quantification contribute to the difficulty managing risks. This paper examines challenges acquired learnings encountered while attempting create curate a domain ontology construction. An explanatory case study approach utilizing lens of pragmatism used develop real-life transp...

Fast-track construction projects have become more popular in recent years in response to growing industry demand. By allowing a downstream activity to start with incomplete information from upstream activities, fast-tracking allows for shortening the project duration at the expense of an increased likelihood of rework. This leaves practitioners with the challenge of determining the optimal fast...

Pekerjaan kontruksi yang terjadi di lapangan tidak selalu sesuai dengan rencananya. Penyimpangan sering ditemukan pada pekerjaan finishing, karena dalam pengerjaannya membutuhkan ketelitian dan kerapian. Akibat penyimpangan ini maka harus dilakukan ulang atau rework rencana kualitas mutu perusahaan diterima oleh konsumen. Faktor dapat menyebabkan antara lain faktor desain, manajerial sumber day...

Determining the risk and uncertainty of rework in construction has received limited attention due to a paucity information about its frequency causes. Errors made during construction, which may require rework, can go undetected, manifesting as an engineering failure asset’s operation thus jeopardise system safety. Therefore, this paper addresses following research question: How practitioners ma...

Generally speaking, wafer fabrication factories define the photolithography area as the dispatching center of the entire factory. To establish a set of operative dispatching rules in the photolithography area while taking into consideration the rework of defective products would assist in coordinating and balancing the workload of the entire production line. Furthermore, it would help to enhanc...

Long run average costs for finite production rate model with backlogging is less than or equal to that of the same model without backlogging. An equation for calculating intangible backorder cost is proposed for situation when required service level is not attainable. By incorporating this intangible backorder cost in mathematical analysis, one can derive a new optimal lot-size policy that mini...

Avoidable rework consumes a large part of development projects, i.e. 20-80 percent depending on the maturity of the organization and the complexity of the products. High amounts of avoidable rework commonly occur when having many faults left to correct in late stages of a project. In fact, research studies indicate that the cost of rework could be decreased by up to 50 percent by finding more f...

A tandem AGV configuration connects all cells of a manufacturing area by means of non-overlapping, sin-gle-vehicle closed loops. Each loop has at least one additional P/D station, provided as an interface between adjacent loops. This study describes the development of three tabu search algorithms for the design of tandem AGV systems. The first algorithm was developed based on the basic definiti...