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When running data intensive scientific workflow in multiple data centers environment, it is inevitable that massive data movement will be caused. The emergence of cloud computing technologies offers a new way to develop scientific workflow systems, and using dataset replicas to reduce data transfer among data centers is an import issue. In this paper, we propose a group based genetic algorithm which...
In a cloud distributed system, machine failure or region failure is a very common scenario. Data replication is a key technique for ensuring data availability. However, Objects are usually assumed independently by distributed systems, despite, a user-level task typically requests multiple data objects. This paper studies the effect of data placement on the availability of user-level tasks from a theoretical...
The Market of Data is an environment where data are reasonably deal with. Some data in the market of data are large and hard to analyze. How to efficiently analyze and organize such large scale data in the market of data is a difficult problem. When using Hadoop to analyze these massive data, if input data of a data mining task are not locally available in a processing node, data have to be migrated...
In order to meet the needs of 3D seismic image filtering, the method of 3D anisotropic diffusion filtering has been studied. And the relationship between the eigenvalues of structure tensor and the stratum structure has been analyzed in detail. By using structure tensor, extracted the local structure of 3D seismic image, and using the improved coherent enhancement diffusion method, designed eigenvalues...
In order to investigate the non-linear characteristic in the human blood spectra, the NIR spectra of the human blood in changeable optical path length (from 0.20 mm to 1.25 mm) is measured in this paper. The production, quantization and positive factors of the non-linear characteristic are discussed. It has been revealed that there is a remarkable non-linear characteristic in the human blood spectra...
VMI (vendor managed inventory) policy coordinates effectively the antinomy between the inventory and the transportation within logistics distribution system. Under VMI mode, integrating inventory and transportation of the supplier and the demander as a whole is vital to achieve the optimization of total distribution cost. In view of typical many-one distribution network in the modern distribution...
For experiments in the circumstances of pulsed high magnetic fields, special measuring techniques are required. Usually in a pulsed high field, measurements have to be finished within the pulse duration (a few milliseconds). Meanwhile, the magnitude of the measured signals is small and the noise is large, a digital filter to deal with these signals is used. The purpose of this paper is to describe...
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