Many networks of interest in the science, including social networks, computer networks and the World Wide Web, are found to be divided naturally into communities or groups. The problem of detecting communities is one of the outstanding issues in the study of network systems. Based on the...

We consider a scheduling problem in which n jobs are to be processed on a single machine. The jobs are processed in batches and the processing time of each job is a simple linear function of its waiting time, i.e., the time between the start of the processing of the batch to which the job...

Samples of lead zirconate titanate Pb(Zr0.53Ti0.47)O3 with europium (Eu) doping concentration of 0, 0.5, 1.5, 3 mol% (PEZT) were fabricated by sol–gel method. XRD spectra showed that the introduction of Eu into PZT favored the growth of (100) orientation. With 3% Eu content, the preferential...

In a recent paper, Ozturkoglu and Bulfin (Ozturkoglu, Y. and RL Bulfin (2011). A unique integer mathematical model for scheduling deteriorating jobs with rate-modifying activities on a single machine. The International Journal of Advanced Manufacturing Technology, 57, 753–762.) formulate a...

In this paper, we consider a scheduling problem with position-based deteriorating jobs and past-sequence-dependent delivery times on a single machine or parallel machines. Each job's delivery time is dependent on its waiting time for processing. Because of the deteriorating effect, each machine...

This paper investigates semi-online scheduling problems on two parallel identical machines under a grade of service (GoS) provision. We consider two different semi-online versions where the optimal offline value of the instance is known in advance or the largest processing time of all jobs is...

In a recent paper [Mor, B., Mosheiov, G., 2012. Scheduling a maintenance activity and due-window assignment based on common flow allowance. International Journal of Production Economics 135, 222–230], a scheduling problem with job-dependent due-window based on common flow allowance is studied...

The paper applies fuzzy clustering techniques to the member countries of the European Union in order to arrive at an identification of preferred monetary union groupings. The statistical criteria employed are those suggested, alternatively, by the traditional Optimal Currency Area theory or the...