Recent years have witness the pervasive supply disruptions and their impacts on supply chain performance. We investigate single or dual sourcing emergency model with partial supply disruptions. Introducing the concept of disruption proportion and delivery allocation, we first explore partial interrupted proportion of main supplier and delivery proportion of backup supplier. Under partial disrup...

The data transmission potential inherent in optical networks is enormous, and because of this great potential, optical networks are in dire need of fault toleration. Recently, various fault toleration techniques exploiting the special properties of optical data transmission have been presented, one of the most interesting being backup-multiplexing. Backup multiplexing comes in a couple of diffe...

1 With many thanks to Tanja de Boer, Irene Hasslinger, Barbara Sierman en Marcel Ras. ABSTRACT The Koninklijke Bibliotheek (KB) digitizes the national collection of the Netherlands. Digitization leads to multiple versions of a publication: a digital access file, a digital master file, back-ups of the digital versions and the physical original publication. This in turn increases the need for sto...

P2P architecture is a viable option for enterprise backup. In contrast to dedicated backup servers, nowadays a standard solution, making backups directly on organization’s workstations should be cheaper as existing hardware is used; more efficient as there is no single bottleneck server; and more reliable as the machines can be geographically dispersed. We present an architecture of a p2p backu...

In this paper, we investigate TCP performance over a multipath routing protocol. Multipath routing can improve the path availability in mobile environment. Thus, it has a great potential to improve TCP performance in ad hoc networks under mobility. Previous research on multipath routing mostly used UDP traffic for performance evaluation. When TCP is used, we find that most times, using multiple...

Data corruption is one of the key problems that is on top of the radar screen of most CIOs. Continuous Data Protection (CDP) technologies help enterprises deal with data corruption by maintaining multiple versions of data and facilitating recovery by allowing an administrator restore to an earlier clean version of data. The aim of the recovery process after data corruption is to quickly travers...

We propose a practical and flexible fixed routing system that preserves many of the benefits of traditional fixed routes but can be deployed in settings with medium to high variability anddelivery timewindowconstraints. The key ideas are the introduction of a new recourse strategy, in which customers are assigned to two planned routes, a primary and a backup, and recourse decisions can move cus...