This paper derives the optimal production-shipment policy for a vendor-buyer integrated system with rework process and a cost lessening product delivery plan. The objective is to derive the optimal production lot size and number of deliveries that minimizes total costs for the proposed vendor-buyer integrated system. This paper extends the work of Chiu et al. [Joint determination of the product...

Programmers sometimes leave incomplete, temporary workarounds and buggy codes that require rework. This phenomenon in software development is referred to as Selfadmitted Technical Debt (SATD). The challenge therefore is for software engineering researchers and practitioners to resolve the SATD problem to improve the software quality. We performed an exploratory study using a text mining approac...

We calculate the mass spectrum of the scalar meson nonet in the Nambu–JonaLasinio model (NJL model) with the ’t Hooft interaction. We also include corrections connected with meson loops in our analysis. The masses of the pseudoscalar and scalar meson nonets are in a satisfactory agreement with experimental data except for the mass of the f0(980) scalar meson. In order to describe this mass more...

This paper studies a single-stage production system, two-stage production system where specification limits are designed for inspection. When quality characteristics fall below a lower threshold or above an upper threshold, a decision is made to rework or scrap the item. The target is to determine the optimum target for a process based on rework or scrap costs. In contrast to previous studies, ...

We summarize some recent results concerning codes of finite nets, which are of interest in the search for non-Desarguesian planes of prime order and certain composite orders. The p-ranks of 3-nets are determined by algebraic properties of the defining loops, and p-ranks of k-nets admitting certain abelian groups of translations are bounded by algebraic properties of the groups. Here we discuss ...

At Skyworks Solutions throughput of the back side through-wafer via etch process was low because of a high rework rate. The high rework rate was due to an organic residue blocking the etch. A process was first developed to remove the residue and then integrated into the via etch process. The optimized via etch process resulted in a reduction in reworks and a significant increase in process thro...

In pipe spool assemblies used in construction, pre-fabrication errors inevitably occur due to the complexity of the tasks involved in the pipe spool fabrication process, the inaccuracy of the tools employed for performing these tasks, human error, and inadequate inspection and monitoring during the process. Permanent deflections may also occur during shipment and transportation. After delivery ...

Fast-tracking through activity overlapping allows for shortening the total project duration at the expense of an increased likelihood of rework. Activity overlapping allows downstream successor construction activities to start with incomplete information from their upstream predecessor design activities. The nature of information evolution and the strength of dependency between these activities...

We study a production-inventory system with multiple unreliable supply sources. Through inspection and rework the system can improve the quality of the units received from the supply sources. There are two interleaved decisions: the replenishment quantities from the sources and the inspection-rework quantities among the units received. We show the optimal solution to the replenishment decision ...

In this paper, two economic production quantity (EPQ) models are proposed for deteriorating/imperfect items with rework process. The production process is imperfect, and imperfect quality items are reworked to become serviceable. At the same time, the remaining good quality items may deteriorate. The inspection of deteriorated items is also imperfect, so that deteriorated items may be sold to c...