Software rejuvenation is the concept of gracefully terminating an application and immediately restarting it at a clean internal state In a client server type of application where the server is intended to run per petually for providing a service to its clients rejuve nating the server process periodically during the most idle time of the server increases the availability of that service In a lo...

Software aging is a phenomenon that refers to progressive performance degradation or transient failures or even crashes in long running software systems such as web servers. It mainly occurs due to the deterioration of operating system resource, fragmentation and numerical error accumulation. A primitive method to fight against software aging is software rejuvenation. Software rejuvenation is a...

BACKGROUND Bioengineered hyaluronic acid derivatives are currently available that provide for safe and effective soft-tissue augmentation in the comprehensive approach to nonsurgical facial rejuvenation. Current hyaluronic acid fillers do not require preinjection skin testing and produce reproducible, longer-lasting, nonpermanent results compared with other fillers, such as collagen. METHODS ...

In a client-server type system, the server software is required to run continuously for very long periods. Due to repeated and potentially faulty usage by many clients, such software \ages" with time and eventually fails. Huang et. al. proposed a technique called \software rejuvenation" [9] in which the software is periodically stopped and then restarted in a \robust" state after proper mainten...

In this paper, we perform the transient analysis of software cost models with periodic/non-periodic rejuvenation. We derive the Laplace-Stieltjes transforms of the ergodic probabilities for respective semi-Markov and Markov regenerative process models, and evaluate numerically the expected cumulative costs experienced by an arbitrary time and its time average by using the Laplace inversion tech...

The progressive approach to neck and facial rejuvenation is a comprehensive method for evaluation and correction of common aging changes seen in the lower face and neck. The surgical results are natural in appearance, as the rejuvenation method chosen is specifically and continuously adjusted for optimal results throughout the evaluation and surgical process. The increased burden on the surgeon...

Full face ablative resurfacing and fractional ablative resurfacing techniques are treatments of choice for facial rejuvenation of aged and photoaged skin. Both techniques were shown to be highly effective for dyschromia, fine lines and wrinkles [1-3]. Although better results are obtained with full resurfacing procedures, it comes with more downtime and more serious risks, when compared to fract...

Skin aging is primarily due to alterations in the dermal extracellular matrix, especially a decrease in collagen I content, fragmentation of collagen fibrils, and accumulation of amorphous elastin material, also known as elastosis. Growth factors and cytokines are included in several cosmetic products intended for skin rejuvenation because of their ability to promote collagen synthesis. Matriki...

This paper introduces a simple index that helps to assess the degree of aging or rejuvenation of repairable systems. The index ranges from -1 to 1. It is negative for the point processes with decreasing ROCOF and is positive for the point processes with increasing ROCOF. Index Terms aging, rejuvenation, homogeneity, non-homogeneity. ACRONYMS CDF cumulative distribution function CIF cumulative i...

The phenomenon of software aging is dominant in modern software systems, affecting their behavior and leading to major and minor failures, which hamper their overall performance. The effects of software aging on software systems are associated with major failures in the recent past, encouraging scientists to work towards proposing vital solutions to the problem. A preventive and proactive solut...