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Conical surfaces are commonly used in the industrial product design. In order to improve the machining accuracy of such parts, a conical tool posture control algorithm is proposed, which abandon disadvantages of traditional linear interpolation algorithm. A new definition of conical orientation spline is given and the procedure of establishment of the curve is explained in detail. Then a model of...
With the development of the distributed artificial intelligence system, multi-agent system (MAS) has been applied in construction of large-scale fault diagnosis systems. Procedure of construction of the knowledge base about fault diagnosis in conventional knowledge models cannot satisfy demands of a synchronism and concurrency of the system. To solve problems mentioned above, a new WFPN model and...
Train control system works to control the train speed, ensure traffic safety and improve the transport capacity where it is necessary to conduct systematic research on the speed-distance mode curve. The development and application of ETCS speed-distance mode curve is introduced on the basis of the ETCS fundamental principles and classifications. The classification and theory of ETCS speed-distance...
Virtual colonoscopy (VC) is a safe and fast medical imaging procedure to screen the colon for polyps. And it has become very popular recently. Colon segmentation is a necessary and important step of such an examination procedure. In this paper, an automatic colon segmentation method is proposed. The fluid inside the colon is first identified and removed based on its characteristic of horizontal surface...
In this paper, a new feature selection algorithm was uesd in fuzzy classification to detect malicious script code. Firstly, extract statistical features from samples based on knowledge and the key words. Next, correlation and separability criterion based on minimum mean square error was utilized to filter the features. After that, the noise of samples was deleted by the final features. The features...
An approach of superimposed training (ST) aided time-varying (TV) channel estimation for Orthogonal Frequency Division Multiplexing (OFDM) systems is presented. By modeling the channel as complex exponential bases, channel estimation is adopted over multiple OFDM symbols by using a sequence of data-dependent ST signal. Simulations illustrate the proposed channel estimator achieves a satisfactory estimation...
Inspired by the principle of the biological immune system (BIS), this paper proposed an immune multi-agent network (IMAN) model by means of the theory and method of the multi-agent system (MAS). On the base of analyzing the comparability on the defense function and adaption and self-organization between the cooperative air-defense system of system for surface warship formation (CASoSSWF) and the BIS,...
BitTorrent is vulnerable to several attacks, since the protocol initially designed lacks of security concerns. Although researches and studies have recently paid lots of attentions on security issues with BitTorrent, a leak in meta file has not been on the agenda yet. In this paper we analyze the design principle of BitTorrent meta file and show the leak which can cause arbitrary data modification...
Xiang Lia Load-balancing Clustering Algorithm of WSN for Data Gathering (LCA-DG) is proposed based on load equalization. The LCA-DG uses the comprehensive weight value that composed of two factors, that distance between head and members and residual energy, to improve cluster members choice strategy for balancing load of each bunch, and uses optimization threshold value and receiving threshold value...
Energy development and utilization play an important role in Henan's economic growth. During more than past 20 year, energy use efficiency has been improved greatly, but there is still a large potential for energy and emission reduction. Firstly, using the method of Grey relevancy analysis to get the model between energy consumption and economic growth in Henan before and after 1990.Secondly, we analysis...
General adjustable absorbers used in acoustical design is to simply change the size of absorption/reflective surface, this kind of reverberation controlling technique is limited by the weight of absorbers and the interior wall area. Regarded these, a thickness-adjustable absorbers named Multi-film absorbing construction (MFC), was developed for more convenient reverberation controlling. In this study,...
This paper focuses on the gas sensing properties of the mixed-potential-type yttria stabilized zirconia (YSZ)-based NO2 sensor with NiO sensing electrode. The sensing characteristics of the sensors have been improved by controlling the microstructure of NiO sensing electrode synthesized with the microwave. The microstructure of NiO strongly depended on the microwave treatment temperature and the sintering...
A NASICON-based electrochemical device attached with an oxide electrode was developed for the detection of Cl2 in air at high temperature. Among the oxides tested, Cr2O3 was found to be the best suited for the sensing electrode. The ΔEMF value of the device attached with Cr2O3 was almost linear with the logarithm of 5–50 ppm Cl2 concentration. It was also observed that the sensor showed a speedy response...
The physical model and three-dimensional finite element model of maxillary dentition are established, based on different patients' dentitions in different situations. They provide some theoretical guidance for orthodontic treatment. Two volunteers (one is male and the other is female) are selected as modeling materials. CT images data of their head are obtained, and the meshed models of maxillary...
How to determine the proportion of the Capture of Provincial State-owned Enterprises Revenue is the first problem that the local government must solve when State-owned capital operation budget is being implemented. Firstly, in this paper we established a dynamic game model under the state of complete information between the government and enterprises. Secondly, we get the Nash equilibrium based on...
In this paper, we propose a novel and simple method for people and vehicles classification in far distance video surveillance. In this approach, moving objects are firstly segmented from background using a background subtraction technique. Secondly, edges of moving objects are extracted using canny operator. Then straight lines of edges of moving objects are extracted by Hough transform and feature...
Summary form only given. The accumulation of biomedical literature makes it increasingly difficult for scientists to keep up with scientific advancements, requiring the development of text mining tools to collect and integrate data in a high-throughput fashion. A major challenge in biomedical text mining is how to recognize genes sensitively and accurately, and translate them to their official gene...
A graphene based, wide-band tunable soliton fiber laser exploiting the intracavity birefringence-induced spectral filter is demonstrated. By rotating the PC, the central wavelength of soliton pulse can be continuously tuned from 1531.5 to 1568.3 nm.
We report the preparation and storage of frequency-uncorrelated cavity-enhanced SPDC entangled photons. The frequency correlation is eliminated with a suitable pulsed pump. The storage of a single photon entangled with another flying photon is demonstrated.
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