This paper considers four options of warranty and preventive maintenance policy. The product is repairable and sold with a non-renewing free warranty policy. For products sold with warranty, preventive maintenance (PM) actions by manufacturers and/or buyers have an impact on the total costs for both parties. In this study, we deal with a model to study the effect of PM that carried out by the m...

Since China entered the WTO in 2001, the Peruvian apparel industry has been considerably affected by the dramatic inflow of Chinese garments. Unlike neighboring countries, the industry was able to keep afloat by firm-level responses that led to unprecedented growth in exports, driven by sales of high-quality apparel. While firm-level responses to import competition are now a well-established em...

Generally for any new design initially a concept layout in 2D CAD is generated. But sometimes if the geometry of product becomes complicated, then 3D CAD model is preferred. Because 3D CAD model can give us a complete all side view at a time like a real product, but in a virtual world. The present case study will show the utilization of 3D CAD at the concept design stage of a complicated shaped...

A highly enantioselective cyanohydrin synthesis with aromatic aldehydes using chiral lithium binaphtholate aqua or alcohol complexes has been developed and is a simple and inexpensive catalyst suitable for process chemistry to give gram-scale cyanohydrins successfully. Dramatic improvements in enantiomeric excess have been realized along with an interesting changeover in absolute stereochemistr...

Software component reuse has become of much interest in the software community due to its potential benefits, cost benefit, time saving, etc. which include increased product quality and decreased product development cost and estimated schedule. To select a component for reuse is very difficult because there are many components with approximate same name, same functionality etc. which make the r...

A well-known recipe for reducing mask cost component in product development is to place non-redundant elements of layout databases related to multiple products on one reticle plate [1,2]. Such reticles are known as multi-product, multilayer, or, in general, multi-IP masks. The composition of the mask set should minimize not only the layout placement cost, but also the cost of the manufacturing ...

The paper presents a model of designing of machine layout in flexible manufacturing system (FMS). Evolutionary computation, particularly genetic algorithms (GAs) proved to be successful in search of optimal solution for this type of problems. To achieve high productivity in a flexible manufacturing system (FMS), an efficient layout arrangement and material flow path design are important due to ...

Given an edge-colored graph, a vertex on a path experiences a reload cost if it lies between two consecutive edges of different colors. The value of the reload cost depends only on the colors of the traversed edges. Reload cost has important applications in dynamic networks, such as transportation networks and dynamic spectrum access networks. In the minimum changeover cost arborescence (MinCCA...

We study a scheduling problem with changeover costs and capacity constraints. The problem is NP-complete and combinatorial algorithms for solving it have not performed well. We identify a general class of facets that subsumes as special cases some known facets from the literature. We also develop a cutting plane based procedure and reformulation for the problem, and obtain optimal solutions to ...