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Energy efficiency of data centers has become a hot topic in recent years and one of the most effective ways to save energy consumed by servers in a data center is through server consolidation. In this paper, a new dynamic server consolidation approach is proposed. The new dynamic server consolidation approach is inspired by the process of human trading. The new dynamic server consolidation has been...
Guaranteeing quality of service (QoS) with minimum computation cost is the most important objective of cloud-based MapReduce computations. Minimizing the total computation cost of cloud-based MapReduce computations is done through MapReduce placement optimization. MapReduce placement optimization approaches can be classified into two categories: homogeneous MapReduce placement optimization and heterogeneous...
Improving energy efficiency has become increasingly important in data centers in recent years to reduce the rapidly growing tremendous amounts of electricity consumption. The power dissipation of the physical servers is the root cause of power usage of other systems, such as cooling systems. Many efforts have been made to make data centers more energy efficient. One of them is to minimize the total...
Network RTK (Real-Time Kinematic) is a technology that is based on GPS (Global Positioning System) or more generally on GNSS (Global Navigation Satellite System) observations to achieve centimeter-level accuracy positioning in real time. It is enabled by a network of Continuously Operating Reference Stations (CORS). CORS placement is an important problem in the design of network RTK as it directly...
Voltage stability is a crucial factor in power system operation. When bus voltage exceeds the operation limits because of change of the operation mode, load in the network or the environmental factors, appropriate control actions should be taken to guarantee a secure system operation, avoiding emergency situations or voltage collapse. Development and improvement of the algorithm for voltage security...
A very large scale integrated-circuit (VLSI) floorplan can be represented in an ordered tree (O-tree), and therefore the VLSI floorplan optimization problem can be transformed into an O-tree permutation problem. This paper presents a new greedy O-tree permutation algorithm and applies it to the VLSI floorplan optimization problem.
Network RTK (real-time kinematic) is a technology that is based on GPS (Global Positioning System) or more generally on GNSS (Global Navigation Satellite System) measurements to achieve centimeter-level accuracy positioning in real-time. Reference station placement is an important problem in the design and deployment of network RTK systems as it directly affects the quality of the positioning service...
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