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With the development of society, personal identification becomes more and more significant. As we know, there are many disadvantages of the traditional identification. So lots of biometrics arise. As one of biometrics, iris recognition is of great importance nowadays with its higher accuracy and stability. Here, the main steps of iris recognition are introduced, including pre-processing of image,...
In this paper, a novel compact ultra-wideband (UWB, 3.1 GHz-10.6 GHz, defined by U.S. Federal Communications Commission) band-pass filter with good transmission characteristic and flat group delay is presented by using multiple-mode resonator (MMR) and open stubs. The proposed structure consists of a main multiple-mode resonator and four open stubs. The dimension of this structure is 10 mm × 2.2 mm...
The continuous growth of triple-play services is driving transmission system to higher and higher data rates. Especially in metropolitan areas, Reconfigurable Optical Add-Drop Multiplexers (ROADMs) of 10 Gbit/s and even 40 Gbit/s transmission rates are massively deployed recently. Polarization mode dispersion (PMD) is one of the major obstacles when realizing high bit rate fiber optical systems. Compared...
Radial Basis Function (RBF) neural networks have strong engineering applications. The training of these networks however can be time consuming. In this paper, we examine the calibration of a MOTOMAN industrial robot using an RBF based network. Additionally we examine the acceleration of RBF network using general purpose graphical processing units (GPGPUs). On a data set of 1989 calibration points,...
Evaluation of spatial accessibility are always the research hotspot in space planning, geography and so on. This article makes full use of two GIS-based accessibility measures including the two-step floating catchment area method and the gravity-based method to examining spatial accessibility to town and rural in Dachang County. Based on communicant and socioeconomic data of Dachang County in 2009,...
Based on the PARADISE (Platform for Applying, Researching and Developing Intelligent Search Engine), we construct a literature search engine with a collection of papers in computer network area. Besides retrieval, the system also provides comments and impact-based summaries of a paper. The comments are extracted from the citing papers and the summary is obtained from the paper sentences impacting...
Based on the architectural drawing and the basic thought of three-dimensional reconstruction, the paper analyzes how to read the DXF data files and to get the information of point coordinates and the entity coordinates useful for the model in the file. It mainly presents how to transform the two-dimensional coordinates into three-dimensional coordinates through coordinate transformation, and proposes...
Aiming at the problem that the traditional control has a limited control bandwidth and delays in digital implementation, a novel generalized inverse control of three-phase active power filter is studied in this paper. And the generalized inverse system can be approximated by LS-SVM due to the fast operational speed of LS-SVM. On the other hand, since the traditional algorithm has slow convergence...
Aiming at the problems that traditional PI control of DC capacitor voltage has Udc slow dynamic response, the period averaging dynamic model of APF including Vdc is established based on KVL. In order to have a good linearization control effect, the inverse control strategies is presented for three-phase four-leg Active Power Filter, and Aiming at the problem that the APF's dynamic model is a multi...
There is a significant interest in the research community to develop large scale, high performance implementations of neuromorphic models. These have the potential to provide significantly stronger information processing capabilities than current computing algorithms. In this paper we present the implementation of five neuromorphic models on a 50 TeraFLOPS 336 node Playstation 3 cluster at the Air...
Monitoring and assessing land degradation is important to local sustainable development in Guizhou province, Southwest China, where limestone distributed about 61.7 %. Using the 1 km Advanced Very High Resolution Radiometer Normalized Difference Vegetation Index (AVHRR/NDVI) data (1992-1993) and 500 m, Moderate Resolution Imaging Spectroradiometer Normalized Difference Vegetation Index (MODIS/NDVI)...
Researches have suggested that fuzzy sets form a more appropriate basis for land cover mapping than traditional Boolean classification. However, to give a crisp answer of which land cover types pixels in remote sensing images belong to, fuzzy clustering methods such as FMC always lost some subtle vague information. In this paper, the result of the Boolean classification using a fuzzy clustering method...
The objective of this study was to examine the vegetation response to the climatic variation in Guizhou province, Southwest China. The relationship between vegetation and climate change was investigated with Normalized Difference Vegetation Index (NDVI) (1982-1999) images derived from the Advanced Very High Resolution Radiometer (AVHRR), and climate data acquired from 19 meteorological stations in...
This paper focuses on finding a novel strategy for reconstructing induction motor phase currents from the DC-link current of two-level voltage source inverters. The main problems are presented and different PWM techniques include SVPWM, NSPWM, AZSPWM and RPWM(RPP) are compared in this paper are discussed. RPP strategy is proved that it can be effectively reduce the invalid regions both around zero...
Usually, polymer science is a compulsory course for the university student majored in science. Indeed, Polymer Science course is difficult to a certain extent to university students whose major is not Polymer Science. In this article, firstly the purpose and the importance of this course have been introduced. Then, the reasons and resolutions of this matter have been analyzed and discussed based upon...
In this paper, we develop a framework of trajectory search called pattern-aware trajectory search abbreviated as PATS). Given a set of trajectories, potential regions are extracted first and potential regions are viewed as popular regions interested by users. Furthermore, potential regions are organized as a region transition graph where each vertex is a potential region and edges capture sequential...
We present a new optimization-based reconstruction model with geometric feature-preserving regularization. The previous construction approach of optimization-based requires generally solving a tremendously large discrete linear system. In addition, the analytic algorithms, such as, back-projection related methods, Fourier transform based reconstruction algorithms, are sensitive to noise. These disadvantages...
In this paper, we introduce a method to estimate the object's pose from multiple video cameras. We derive a centralized solution to pose estimation from multiple video cameras by solving a general matrix equation. Moreover, we provide an equivalent distributed solution to the pose estimation problem based on the independent pose estimation obtained from each camera. We demonstrate that both methods...
In this paper, we present a general framework for analysis of plenoptic sampling by investigating the spectral analysis of plenoptic imaging. The proposed framework provides a unified representation that generalizes several existing methods for plenoptic sampling. The plenoptic sampling theory presented extends the study of plenoptic imaging to parallel cameras that are not restricted to lie on a...
Electrically percolative composites have attracted much attention because they exhibit a high dielectric constant at a critical concentration of the conductive fillers. Aluminum (Al) is well known as a fast self-passivation and low-density metal. The thin and dense passivation layer forms an insulating boundary layer outside the metallic spheres (core-shell) which lowers the dielectric loss and realizes...
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