Maintenance plays an important role in system reliability enhancement which is an essential requirement for computer systems in service for critical applications. This paper presents a failure number m based maintenance policy for k-out-of-n:G loadsharing computer systems with a goal of maximizing the long-run expected system reward per unit time. Compared to previous study, we take load-sharin...

Atypical femoral fractures are uncommon fractures that are often associated with extended bisphosphonate use. They occur in the proximal or middle diaphyseal portion of the femur with a short oblique pattern and have relatively thickened cortices. Prodromal pain symptoms vary and bilateral involvement is common. Because delayed or complicated healing adversely affects treatment, fixation with a...

Previous panel papers have described testing for NERC and WSCC compliance [A] and testing and tuning of governors for compliance and island-mode performance [B]. This paper presents experience with testing of gas turbine plants for NERC and WSCC compliance. Testing has been performed on older analog-electronic and new digital-electronic units. The level of detail used in modeling and model avai...

This paper analyzes loadsharing principles and their relationship to reliability requirements for SS7-networks. After an introduction to loadsharing in SS7networks and general problems associated with it, a specific problem resulting from the deregulation in Germany will be discussed in detail. New loadsharing algorithms that fulfill the reliability requirements of SS7-networks but which also o...

A two-tier cellular network is characterized by overlapping of macrocells and microcells in the service area. This overlapping property provides an advantage that traffic loads can be shared by the two tiers to increase the performance of the system. In this paper, we propose two channel-sharing strategies, namely vertical loadsharing and horizontal load-sharing, to better utilize channels of t...

Complex load-sharing parallel systems incorporate dependencies between components through a load-sharing rule. Such systems were used to model the strength of fibrous composites where component fiber failures occur in cycles having two phases. As the load on the system increases, a single component fails (Phase I), which then causes a cascade of component failures (Phase II) due to the load tra...

At every joint there is a redundant set of muscle activated during movement or loading of the system. Optimization techniques are needed to evaluate individual forces in every muscle. The objective in this thesis was to use static optimization techniques to calculate individual muscle forces in the human extremities. A cost function based on a performance criterion of the involved muscular forc...