Globalization has created tremendous opportunities, but also made business environment highly competitive and turbulent. To gain competitive advantage, management of present-day transnational firms always seeks options to trim down various transaction and coordination costs, especially in the area of controllable intra-supply chain system. This study investigates a multi-product intra-supply ch...

This study attempts to determine the optimal production run time for an economic production quantity (EPQ) model with a Poisson breakdown rate, the rework of nonconforming items, and multi-delivery of finished products. It is assumed that nonconforming items can be randomly produced and repaired through a rework process added at the end of the production process. Production equipment is subject...

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...

The overlapping of activities is a common practice to accelerate the execution of engineering projects. This technique consists in executing in parallel two activities, normally executed in a sequential way, by allowing the downstream activity to start before the end of the upstream activity based on preliminary information. In this paper, we propose a constructive heuristic for the Resource-Co...

1 The hard X-ray flux ratio ℜ of the footpoint sources to the loop-top source has been used to investigate non-thermal electron trapping and precipitation in solar flares. Considering the mission-long Yohkoh Hard X–ray Telescope database, from which we selected 117 flares, we investigated a dependence of the ratio ℜ on flare loop parameters like height h and column depth N. We used non-thermal ...

Simple modifications are introduced to the evolvable self-reproducing CA (Evoloop) implemented by Sayama [4] with the aim of mimicking a predator-prey model. A new state to represent the predator (disease) and a corresponding rule set are added to the CA, as well as a memory layer to track predator lifetime. Behaviour of the modified system is investigated and compared for different choices of ...

We have contrived the evoloop 5, 6 , a new selfreproducing loop spontaneously evolving on a simple deterministic 9-state 5-neighbor cellular automata (CA) space. In this article, we examine the evolvability and adaptability of the evoloop through several experiments, the result of which brings us good prospects for the future implementation of an extraordinary large-scale arti cial ecosystem on...