In this paper, we propose a high availability design of a Cable Modem Termination System (CMTS) clusters system based on the software rejuvenation technique. This proactive system maintenance technique is aimed to reduce system outages and the associated downtime cost due to the ‘software aging’ phenomenon. Different rejuvenation policies are studied from the perspectives of design, implementat...

Unavailability in enterprise systems is usually the result of planned events, such as upgrades, rather than failures. Major system upgrades entail complex data conversions that are difficult to perform on the fly, in the face of live workloads. Minimizing the downtime imposed by such conversions is a time-intensive and error-prone manual process. We present Imago, a system that aims to simplify...

To make paper, machines spray wet pulp on a moving screen and extract the water from it by squeezing it between rollers, before drying it using heat and rolling it on reels as finished product. The water extracted in the squeezing process is removed by a continuous roll of fabric called a felt. There are typically three felts on a paper machine. Felts wear out over time, and therefore must be r...

The goal of skin tightening can be achieved by various methods which, among others, include chemical peels, radiofrequency therapy and laser therapy. The efficacy, downtime and potential side effects of these methods vary highly between "groups" of methods as well as within the same method group, depending on treatment parameters used. A method which would combine efficacy with no-downtime and ...

In this paper, we provide a Genetic Algorithm (GA) based approach for change management in Enterprise IT systems which minimizes change delay and improves change capacity. Change management evolves the implementation of change queues on the set of applications which are running on one or more servers. To implement these changes there are some constraints involved: atomic nature of changes; when...

The live migration of Virtual Machines (VMs) is a key technology in server virtualization solutions used to deploy Infrastructure-as-a-Service (IaaS) clouds. This process, on one hand, increases the elasticity, fault tolerance, and maintainability in the virtual environment. On the other hand, it increases the security challenges in cloud environments, especially when the migration is performed...

The present study is a new approach for finding the suitable maintenance practice with the help of fuzzy logic rule base system. It is a decision making tool which depends upon various condition of a machine .The success of any industry depend on its optimum manufacturing cost of product and for achieving the above said factor the maintenance practice should be efficient and effective .Fuzzy ba...

Executive Overview Digitizing patient records helps healthcare organizations increase efficiency and improve patient care. Now, as part of President Obama's economic stimulus package, healthcare organizations can also receive financial benefits, and avoid penalties, by implementing digital record systems. For healthcare IT systems to live up to their true potential, however, they must maintain ...