Object replication is an important and sophisticated question, it can reduce access latency and bandwidth consumption, replication can also help in load balancing and can improve reliability by creating multiple replicas of the same storage object. But there are many difficulties to realize object replication in efficiently. In this paper, we discuss the architecture of object storage system wi...

We scale the database back-end in dynamic content cluster servers by distributing read-only transactions on a set of lightweight database replicas while maintaining 1copy-serializability. This is contrary to conventional wisdom in replicated databases which says that one could have either 1-copy serializability or scalability, but not both. The key to scaling is a novel integrated fine-grained ...

Despite the fact that cloud computing offers a high degree of dynamism on resource provisioning, there is a general lack of support for managing dynamic adaptations of replicated services in the cloud, and, even when such support exists, it is focused mainly on elasticity by means of horizontal scalability. We analyse the benefits a replicated service may obtain from dynamic adaptations in the ...

In this paper, we present a distributed algorithm for dynamic data replication of an object in a distributed system. The algorithm changes the replication scheme, i.e., number of replicas and their location in the distributed system, to optimize the amount of communication. In other words, the algorithm dynamically adapts the replication scheme of an object to the pattern of read-write requests...

In order to reduce the impact on the grid scheduling caused by the resource error, for complex dependent tasks, designed a dynamic replication of fault-tolerant scheduling algorithm (DRFT). This algorithm build task model by applying hypergraph theory, using primary-backup task as backup mode, take the active execution mode combined with the passive execution mode to perform the backup task, se...

As development unfolds, DNA replication is not only coordinated with cell proliferation, but is regulated uniquely in specific cell types and organs. This differential regulation of DNA synthesis requires crosstalk between DNA replication and differentiation. This dynamic aspect of DNA replication is highlighted by the finding that the distribution of replication origins varies between differen...

We extend the super-replication theorem in a dynamic setting, both numéraire-based as well numéraire-free setting. For this purpose, we generalize notion of admissible strategies. In particular, obtain well-defined price process, which is right-continuous under some regularity assumptions.

The eukaryotic genome is packaged together with histone proteins into chromatin following DNA replication. Recent studies have shown that histones can also be assembled into chromatin independently of DNA replication and that this dynamic exchange of histones may be biased toward sites undergoing transcription. Here we show that epitope-tagged histone H4 can be incorporated into nucleosomes thr...

Dynamic replication can be used to reduce bandwidth consumption and access latency in high performance “data grids” where users require remote access to large files. Different replication strategies can be defined depending on when, where, and how replicas are created and destroyed. We describe a simulation framework that we have developed to enable comparative studies of alternative dynamic re...

It is presumed that if you have a limited amount of time for assessing student knowledge, that you should give a test that does not waste time giving students feedback. Feng and Heffernan (2010) compared two such conditions and found the counter intuitive results that the condition that let them get feedback was actually superior (not statistically reliable) than the “test” condition, in which ...