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Coking coal plays a vital role in China's economic development as an important strategic resource. The article builds the coking coal price index prediction model by the method of time series model, using statistical software, Eviews6.0. The result shows that the CRCP price index sequence is stationary time series after the first order difference, and the model of ARIMA (2, 1, 3) is better to forecast.
In order to improve the flexibility and scalability of industrial networked control systems (INCSs), this paper proposes a self-organizing network model, where it allows for INCSs configuring parameters automatically with the mapping relationship among network communication and control loops. Moreover, field devices can satisfy plug-andplay based on this model. Research shows that INCSs, based on...
This paper presents a novel adaptive compressed sensing based joint detection and tracking algorithm (ACS-JDT algorithm) for airborne radars with high resolution. By exploiting the sparsity of targets in the measurement space, the adaptive compressed sensing algorithm (ACS algorithm) reconstructs the whole radar scenario (direction of arrival (DOA)-Doppler plane) for each range gate during one scan...
Based on transfer function of photovoltaic grid-connected inverter, parameter static sensitivity formula is deduced, and a preliminary comparison of sensitivity is obtained. Furthermore, parameter dynamic trajectory sensitivity analysis approach is utilized to assess difficulty and precision of parameter identification by employing different disturbance tests, such as sudden change in irradiance,...
Trimedia has widely used in Monitoring software of network in expressway at present, especially in video conference system, digital video monitoring system, digital hard disk video based on DSP (DVR), video on demand (VOD), remote multimedia database has been large-scale application. When TriMedia was used for statistic, system optimization is very necessary, structrual optimization is changing the...
Natural image statistics have been widely exploited for lossless predictive coding and other applications. However, traditional adaptive techniques always focus on the local consistency of training set regardless of what the predicted target looks like. We investigate the problem of introducing the model evidence of predicted target since self-similarity inherent in natural images gives some kind...
With the development of economic globalization in the new century, information technology and the rapid development of high and new technology, innovation ability has increasingly become the core competence of enterprises. Enterprise innovation ability includes technology innovation ability, management innovation ability and system innovation ability, etc. Enterprise innovation ability construction...
This paper introduces a kind of reconfigurable interface realized with the Dynamic Reconfigurable FPGA. The interface can automatically switch its control circuit according to the interface type of external sensor device. Thereby, the interface is compatible to various interfaces. In addition, the interface can help control device of aero craft to detect external sensor device, this is good for establishing...
Aiming at the developing requirements on rapid integration of control system for responsive aerospace launch vehicle, this paper put forward a kind of architecture of plug-and-play/PnP control system, and presents the generic model of plug-and-play control system for aerospace launch vehicle and the standardization communication machenism. Then the principle validation experiment is carried through...
In this paper, a new approach for the complete modal decomposition of the electric fields emerging from the overmoded high power microwave devices is presented. Based on the simultaneous perturbation stochastic approximation (SPSA) algorithm, mode coefficients of the multimode high power microwave both in interaction region and the output window can be exactly calculated utilizing the field intensity...
This paper proposes a Quality of Experience (QoE) test methodology for adaptive streaming service. We analyze the factors influencing the QoE of adaptive streaming, and evaluate the QoE of the end-to-end service. Our research gives the evidence that adaptive streaming improves end-users' subjective perception greatly compared with fixed-rate streaming in terms of QoE. Two groups of experiments are...
Featureextraction and classification recognition are the most important parts in the process of off-line handwritten Chinese character recognition. Wavelet transform is put forward by predecessors and is a kind of feature extractional gorithm. It is said that we can use separately one dimensional wavelet transform along the rows and columns two directions and get the result. This paper presents a...
Aiming at a kind of state unpredictability of the fuzzy input large time-delay systems, the author designs a fuzzy observer with the application of Parallel Distributed Compensation(PDC), puts forward the PID control method based on the fuzzy observer, and provides a new sufficient condition which guarantees the asymptotic stability of fuzzy large time-delay system. With the employment of generalized...
The current theory of nonlinear systems is still not perfect. The modeling and control of nonlinear system problem has always been the difficulty. In a variety of methods of its study, fuzzy system theory because of having the language descriptive way similar to the human mind, can obtain and deal with the qualitative information intelligently. The theory itself also has non-linear characteristics...
In recent years, it is a very active direction of research to use neural network to control computer. Neural network is a burgeoning crossing subject, and the way it processes information is different from the past symbolic logic system, which has some unique properties: such as the distributed storage and parallel processing of information, the unity of the information storage and information processing,...
Commanding control is the most essential and themost fundamental question in cooperative firefighting. Based on multi-agent system in the field of Distributed Artificial Intelligence (DAI), it is described the architecture and formalized model of firefighting cooperative commanding control system that helps to make cooperative operation in fireground effectively and orderly. In this paper a study...
In order to realize load balance or to fulfill the business logic efficiently, it is very common that a process has to be migrated in the environment of open network. In this case, how to protect the recipient's platform from malicious code and at the same time, how to attest to the trustworthiness of the recipient's platform by the recipient are both typical problems. Utilizing trusted computing...
Optical velocimeter has been an important experimental installation in many labs. In this letter, an improved fiber-optic velocimeter that can be used to measure dynamic velocity of a moving object is described. The key parameters of the system are analysed.
Using image recognition, 20 varieties of peanut are collected through scanner. The image of 100 peanut seeds' positive and two sides of each variety are collected; each image's characteristics of shape, color and texture totaling up to 50 are obtained. A cluster analysis model based on these features and another cluster analysis model with PCA data optimizing is built. For further step, we have got...
To verify the performance of crop classification and variety clustering based on electrophoretogram and investigate vegetable seed genetic relationships, three kinds of breeder's seeds samples are collected. They are bell pepper, Chinese cabbage and cucumber. 30 varieties of each kind of crop have been collected. And standard electrophoretograms of them are prepared by method of protein ultra thin...
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