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Generally, software evolution activity is a process of frequent iteration which produces large-volume, heterogeneous and unstructured data in a fast way. During this process, lots of noisy data and side effects are generated. In this way, these software evolution data form the so called four Vs of Big Data. So it is necessary to extract valuable information from the big software evolution data in...
A huge volume of user and media data has been generated during the daily operation in online media sites. In this circumstance, traditional database technology cannot fulfill the demand for the increasing data process capacity. In this paper a novel data processing model, i.e. Data Warehouse Schema Generator (DWSG), has been suggested to improve the data processing efficiency through utilizing snow...
A multi-wavelength space multiplexing photonic A/D converters is proposed which combines the WDM and space division multiplexing and enables higher sampling rate with the low loss and completely passive demultiplexing feature. The key technologies and progress are discussed.
This terms Endocrine Disrupting Chemicals (EDCs) are also called Environmental Estrogens. The synthetic chemicals in the artifice products may affect the endocrine system, associated with developmental, reproductive and other health problems in wildlife and laboratory animals. In the Beijing-Tianjin-Tangshan district, there are 38.58 million populations. And chemical engineering of petroleum and coal...
Applying blocking technology to the computation of big dense matrices can make a better use of computerpsilas memory hierarchies and increase computing efficiency. The blocked algorithm for LU factorization is studied in this paper. Efficient algorithms are designed for the computation of the different matrix operations involved in the blocked LU factorization algorithm. Optimization techniques including...
During the past decade, multiple-input-multiple-output (MIMO) systems have received a significant attention because of its promising capacity increase over single-input-single-output (SISO) systems. In this paper, as a key technology, we present a novel M-paths MIMO detection algorithm with dynamic-layer-ordering for spatial-multiplexing MIMO systems over rich scattering wireless environment. This...
This paper presents some key issues in fiber-optic interferometric magnetic field sensors. Practically applicable methods to design and implement fiber-optic Michelson interferometer and transducers are described with experimental verifications. Detection scheme of traditional hardware demodulation is improved, and a new software demodulation method is addressed. Transducers were implemented by using...
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