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Passive microwave plays an important role in soil moisture monitoring. In this study, a layered soil emission model has been built based on theory of radiative transfer, combined with the random rough surface, soil dielectric constant model and soil moisture algorithm. The soil moisture in different frequencies was simulated and the look-up table set was established between soil moisture and soil...
Wind speed prediction is crucial for electricity system security and planning. In this paper, ensemble Kalman Filter (EnKF) method is employed to predict 10 minutes averaged wind speed. We use Auto-Regressive and Moving Average (ARMA) model as the state function of EnKF, perturb initial wind data to generate ensembles and forecast wind speed data via EnKF. The comparison with in-situ measurements...
Traditional geographical information systems hold only a single state of the `real world'. However, geographic phenomena have not only static but dynamic characteristics. The work described in this paper explicit the development of the conceptual modeling phase of geographic phenomena in a dynamic perspective. This modeling approach highly correlates with the signal transmission and concurrent processing...
This paper probes into the design of the intelligent monitoring system based on S3C2440 ARM microprocessor. It focuses on the difficult points of developing the GUI applications based on Qt/Embedded and the Linux drivers for various types of sensors in the Lab Intelligent Monitoring System project, achieving the combination of Qt/Embedded and the linux system programming.
Organizing images into meaningful (semantically) categories using low-level visual features is a challenging and important problem in content-based image retrieval. Clustering algorithms make it possible to represent visual features of images with finite symbols. However, there are two problems in most current image clustering algorithms. One is without considering the choice of the initial cluster...
The researches on the high efficient, safe and accurate measurement system of magnetic head pitch and roll angles for the HAA in HDD are relatively lack now. In this paper, the perspective projection transformation of the magnetic head object point in the reference image plane was expressed by using the rotary tensor transformation matrix, and the principle for projection deviation angle between the...
In this article, we present an efficient connectivity compression algorithm for triangular meshes. It is a face-based, single resolution and lossless connectivity compression method. This method is an improvement on Edgebreaker. In the aspect of mesh traversing, we use adaptive mesh traversing method to make Split operations as few as possible, which are burdens of the compression ratio. In the aspect...
In this paper, in order to increase wireless sensor network life time, protocol with dynamic clustering is suggested. Because this network have got limited energy, therefore the energy issue is very important. The new protocol is proposed in two phases, cluster setup and steady state. This phase consist of creating cluster, dynamic distribution of cluster head, using dynamic tree structure and turning...
Automatic scoring is a help to teachers of giving students exact marks in examination. This article focuses on the method by using natural language processing technology to achieve a viable algorithm. The concepts of the forward maximum matching algorithm and semantic similarity computation and contrary degree calculation are described in this paper. From what has been discussed above, Chinese subjective...
The heat which electric furnace smelt iron alloy is needed is provided by electrode extreme. When the position of electrode extreme is perfect, the power consumption and productivity of production unit are in good state, so take control of electrode position is very important. Electrode regulator system of ore smelting electric arc furnace is a nonlinear, multivariate, parameter-time-varying system,...
With ARM7 as the core, the new intelligent mobile vehicle checking system integrated a lot of hardware modules such as video capture, GPS positioning and wireless transmission, the design of the system software used the embedded software developing platform based on ADS integrated development environment. By the hardware/software co-design, the new intelligent mobile vehicle checking system implemented...
The ever-increasing complexities of IT systems is bringing great challenges to IT management. Meanwhile, IT management is expanding beyond the traditional IT network management and IT service management, and spreading to business service management. Existing configuration management models for IT management solutions lack holistically presenting, managing, and leveraging the IT logical entities related...
Ethnic Facial Feature is one of the most important face features. We create a face database of ethnic groups and extract facial features by using face recognition technology. In the feature extraction method, we adapt the algebra and geometry features from face database. In algebra features, LDA algorithm extracting the algebraic features of human face images is used. The paper also constructs a new...
A new second order sliding mode tracking controller (SOSMC) is presented for a kind of piezoelectric actuator (PEA) model with hysteretic nonlinearity. The second-order nonlinear dynamic model of the PEA is introduced and a second order sliding mode control law with dual-phase sliding movement is designed. In order to prove the system's stability, a determinant theorem is presented. By theoretical...
This paper introduces a novel scene recognition algorithm to perform reliable scene recognition. Firstly, to construct the maximally stable regions, we exploit the maximally stable color regions (MSCR) detector for improving the identification of stable regions. Secondly, each detected region is processed properly by using the method of mathematics morphology. Finally, the descriptor is computed by...
With the development of intelligent transportation system (ITS), information-collection plays an increasingly important role. Research is based on Zigbee protocol for wireless sensor network technology, combined with video coding, designed a traffic data-acquisition system. Network nodes are distributed in the monitored area regularly, and responsible for collecting traffic video information, self-organizing...
Immunohistochemical color image segmentation has important application value for quantitative assessment of immunohistochemical image. In this paper, an automatic segmentation method was proposed according to characteristics of color immunohistochemical images. First of all, we established a Chromatics criteria in RGB space so that positive cells regional and negative cells region were separated automatically...
This paper puts forward a adaptive inverse saleh function predistorter based on direct learning architecture according to the feature of saleh model to compensate for the nonlinearity of Power Amplifiers (PA). In this paper, we focus directly on a particular PA model and building a corresponding predistorter, After approximating the nonlinear static part by the four parameters function, Memoryless...
This paper considers the generalized synchronization problems of two different hyperchaotic systems with unknown parameters. By denoting the synchronization error signals as the difference between the state variables of the drive system and the state variables of the response system, the hyperchaotic synchronization problem is transformed into the stabilization control problem of the origin of the...
In this paper, the stabilization problems of a class of new hyperchaotic systems with fully unknown parameters are concerned. Based on the adaptive control idea, two novel adaptive state feedback controllers are designed to implement the asymptotic stabilization of this kind of new hyperchaotic system by choosing appropriate controller structure and parametric updating law, respectively. The effectiveness...
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