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— In this paper, we consider the problem of providing efficient resiliency for data centric storage in wireless sensor networks, which is recently gaining interest. Three types of canonical storage methods are available in the literature for storing the sensed data, namely, external storage, local storage, and data centric storage. In these methods, a(More)
Previous works have proposed analytical models of TDM wavelength networks to evaluate the blocking performance, but they differ in their underlying assumptions and have varying computation complexities. In this paper, we propose an analytical model of TDM WDM optical networks with optical time-slot interchangers and without wavelength converter for minimum(More)
Virtual enterprise provides an attractive model for autonomous healthcare organizations to synergize and leverage the strengths of each others. We present in this paper the design concept and working principle of an inter-organizational workflow process management system for virtual healthcare enterprises. We propose an extended WFMC process Meta model and(More)
Many routing and wavelength assignment algorithms have been proposed for optical networks, but they lack the refinement of being able to further share the gigabit bandwidth in each wavelength. Obviously, TDM wavelength routing networks can offer better network throughput than traditional wavelength routed networks. However, with the advancement of optical(More)
Recent advances of WDM technology provide multiple magnitude of raw bandwidth in a fiber. One of the effective ways of utilizing the gigabits bandwidth in a fiber is to partition each wavelength into fixed length time-slots for optical data transmission. In this paper, the shared time-slot wavelength router (STSWR) architecture that is capable to allow the(More)
In recent years, optical transport networks have evolved from interconnected SONET/WDM ring networks to mesh-based optical WDM networks. Time-slot wavelength switching is to aggregate the lower rate traffic at the time-slot level into a wavelength in order to improve bandwidth utilization. With the advancement of fiber-optics technologies, continual(More)
Previous works have considered analytical models of TDM wavelength networks to evaluate the blocking performance, but they differ in their underlying assumptions and have varying computation complexities. In this paper, we present an analytical model of TDM WDM optical networks with optical time-slot interchangers and without wavelength converter for(More)
In this paper we propose location aided storage management for data centric storage in wireless sensor networks. Sensor networks store data in three places: external, in-network, local. In-network storage allows sensor nodes as storage nodes for sensed data in the sensor network. This form in-network storage in sensor networks is called data centric storage(More)
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