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Server cluster systems are widely used to provide not only scalablebut also fault-tolerant distributed application services. Eachapplication process has to be reliably performed in presence of serverfault to provide reliable application services. One way to reliablyperform an application process is that replicas of each applicationprocess are performed on multiple servers. However, a larger electricenergy...
In cloud computing systems, server cluster systems are used to provide flexible, scalable, and fault-tolerant application services. One way to provide a fault-tolerant application service is that multiple replicas of each application process are performed on multiple servers in a server cluster. However, a large amount of electric energy is consumed in a server cluster. Hence, it is critical to discuss...
Application processes have to be not only fault-tolerantly but also energy-efficiently performed in presence of server faults in a cluster of servers. In our previous studies, the extended improved redundant power consumption laxity-based (EIRPCLB) algorithm is proposed where a process is actively replicated on multiple servers. While the cluster can be fault-tolerant, the larger amount of electric...
Application processes have to be not only efficiently and reliably but also energy-efficiently performed in presence of server faults in distributed applications. In the improved redundant power consumption laxity-based (IRPCLB) algorithm proposed in our previous studies, a request of a process is sent to multiple servers. Then, replicas of a process are redundantly performed on more than one server...
In order to realize reliable and energy-aware server clusters, application processes have to be reliably and energy-efficiently performed in presence of server faults. In one way, an application process can be redundantly performed on multiple servers. In the improved redundant power consumption laxity-based (IRPCLB) algorithm which is proposed in our previous studies, since each application process...
Nowadays information systems are being shifted to distributed architectures, i.e. Grid and P2P models to obtain the benefits like scalability, autonomy, and fault-tolerance. We consider the peer-to-peer (P2P) model as a fully distributed, scalable system, which is composed of peer processes (peers). A group of multiple peers cooperate with each other. Here, peers have to efficiently and flexibly deliver...
Consider a system composed of mobile robots that move on the plane, each of which independently executing its own instance of an algorithm. Given a desired geometric pattern, the flocking problem consists in ensuring that the robots form this pattern and maintain it while moving together on the plane. In this paper, we explore flocking in the presence of faulty robots, where the desired pattern is...
Nowadays information systems are being shifted to distributed architectures. The peer-to-peer (P2P) model as a fully distributed system, is composed of peer processes (peers). Here, peers have to efficiently and flexibly make an agreement on one common value which satisfies an agreement condition. In the agreement protocol, each peer has to deliver values to all the peers in a group. We take advantage...
Nowadays information systems are being shifted to distributed architectures to obtain the benefits like scalability, autonomy, and faulty-tolerance. The peer-to-peer (P2P) model as a fully distributed system, is composed of peer processes (peers) which cooperate with each other to achieve a common goal. Here, peers have to efficiently and flexibly make an agreement on one common value which satisfies...
Nowadays more and more information systems are being shifted to distributed architectures because of the benefits like scalability, autonomy, and faulty-tolerance implied from the essence of the distributed systems. Here, every process is peer and cooperates with other peers to achieve common goal. In order to do that, peers have to efficiently and flexibly make an agreement on one common value which...
In a wireless sensor and actuator network (WSAN), a group of sensor nodes, actuators, and actuation devices are geographically distributed and linked by wireless networks. Sensor nodes gather information for an event occurring in the physical world and send them to actuators. Actuators perform appropriate actions on actuation devices by making a decision on receipt of sensed values from sensor nodes...
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