The success of a Web service is largely dependent on its responsiveness (i.e., its availability and timeliness) in the delivery of the information its users (clients) require. A practical approach to the provision of responsive Web services is based on introducing redundancy in the service by replicating the service itself across a number of servers geographically distributed over the Internet....

Cloud data storage platforms have attracted increasing attention in data management. Data replication is a well-known technique that reduces access latency, thus improving cloud data storage availability and performance. Nonetheless, replica placement algorithms are among the significant issues in data replication, which affect data availability and access performance considerably. Replica plac...

Replica management is basic and challenging issue for distributed storage system designer. The objective of this paper is to dynamically create, migrate and delete replicas among nodes in response to changes in the access patterns. This paper presents an Adaptive Replica Management Model for large-scale Object-based Storage Devices (OSDs). The model expresses availability and consistency mainte...

A digital twin (DT) is a cyberspace replica of system, such as manufacturing equipment. DT consists statistical models and computer simulations physical phenomena occurring in the system. The modeling adjusted to system based on signals from sensors attached their temporal changes. In general, utilized (i) predict (ii) optimize control parameters, (iii) estimate part replacement schedules. We p...

We consider the complexity of a single-sided AdS black hole as modelled by an end-of-the-world brane. In addition, we present multi-boundary partition functions and matter correlation for such setting. compute using modified replica trick corresponding to "quenched geodesic length" in JT gravity. The late-time behaviour shows saturation constant value order $e^{S_0}$ following period linear gro...