Cellular manufacturing systems are widely used due to their advantageous capability of combining the flexibility job-shop and productivity flow-shop. In recent years, reduction product life cycle, variation in demand products, introduction new technologies, have driven companies improve responsiveness, thus reducing cellular cycle with a focus on re-designing cells. Another issue concerns susta...

INTRODUCTION Vape shops are popular brick-and-mortar stores that sell e-cigarette products but are not understood well. Previous analysis of Yelp reviews of vape shops located in various ethnic neighborhoods in Los Angeles, California in 2014 identified characteristics of vape shop as delineated by consumers. In this study, we assessed the associations between these characteristics and vape sho...

The various industries such as automobile industry, aerospace industry, printing industry, and chemical industry operate on job shop system. Job shop scheduling problems are complex and real world. The present work assesses the effect of change in shop utilizations levels on total setups and mean setup time measures. The simulation model of the job shop is developed for investigation purpose. T...

We propose a constructive heuristic approach for the solution of the permutation flow-shop problem. The objective function of all algorithms is the minimization of the makespan. Our approach employs Johnson’s rule to give a good initial solution for the improvement heuristic, also known as metaheuristics. The proposed heuristic algorithm, named MOD, is tested against four other heuristics that ...

The paper concerns a small flexible manufacturing system consisting of three CNC machines: a lathe machine, milling machine and measurement center and a single robot, located at the Poznań University of Technology. A short description of the production environment, which can be modeled as the extended job shop system with open shop sections within particular jobs, is followed by the proposition...

This work proposes an approach to facilitate the integration in the communications among industrial systems and shop floor devices by means of a global and integrated environment. This environment is open, makes use of a number of standards, providing a transparent way to integrate the standards CORBA, KQML, MMS and XML in all the required levels. This proposal focuses on how the communication ...

When using a constructive search algorithm, solutions to scheduling problems such as the job shop and open shop scheduling problems are typically represented as permutations of the operations to be scheduled. The combination of this representation and the use of a constructive algorithm introduces a bias typically favouring good solutions. When ant colony optimisation is applied to these proble...