The distribution of genetic variability in natural populations is the result of a number of evolutionary factors. We present concepts on the genetics of large populations, with special reference to association studies. Particular issues related to selection, mutation and genetic load, or migration in spatial models are not treated here. Genetic drift is assumed to be negligible, unless otherwis...

An improved range-Doppler algorithm (RDA) is proposed to reconstruct images from synthetic aperture radar (SAR) data received at high squint angles. At a higher squint angle, a larger synthetic aperture is required to receive sufficient amount of data for image reconstruction, and the range migration also becomes more serious, which demands more computational load and larger memory size. The pr...

Distributed Virtual Environment Systems are widely used in massively multiplayer online games. With an efficient distributed architecture and load balancing algorithm, they can support tens of thousands of players interacting with each other. In this paper, we propose an adaptive load balancing algorithm to solve the problem of the center-crowdedness in the DVE systems, while reducing the intra...

Cloud computing and Network Function Virtualization (NFV) use cases proposed by ETSI can improve network caching when an adequate optimization algorithm is used. A cache placement algorithm is proposed based on these virtualization tools. Moreover, a cache placement protocol is presented to support the cache migration. Optimal cache and Virtual Machine (VM) placement and migration, and optimal ...

In this paper we propose a predictive approach for dynamic load balancing. This approach involves predicting unbalanced load distribution using Estimation Maximization (EM) algorithm, and migrating local jobs based on the estimation average. This strategy is an improvement to the existing approaches because by using EM algorithm, we only extract sample workload information which is assumed to f...

The load balancing algorithm used for the Future Renewable Electric Energy Delivery and Management (FREEDM) System power migration is analyzed for optimality. The discussion includes reduction from the bin packing problem, and limitations of this approach. Additionally, the discussion shows a reduction from the fractional knapsack problem, which allows for optimization based upon minimum cost o...

This paper presents a Checkpoint-based Rollback Recovery and Migration System for Message Passing Interface, ChaRM4MPI, for Linux Clusters. Some important fault tolerant mechanisms are designed and implemented in this system, which include coordinated checkpointing protocol, synchronized rollback recovery, process migration, and so on. Owing to ChaRM4MPI, the node transient faults can be recove...

Arts is an open object oriented framework that provides customizable runtime services for parallel processing within a global distributed object space. This paper focuses on migration mechanisms which enable dynamic load balancing in this environment. They are designed to eeciently support diierent types of application objects with respect to their data structure and granularity. Performance nu...

Load balancing algorithms goal is to keep all nodes normally loaded through migration of modules from heavy loaded nodes to lightly loaded nodes. In addition, load balancing must involve low communication overhead and respond quickly to load imbalance in the system. In previous load balancing algorithms, classification of node as heavy, light or normal loaded node is done by using concept of th...