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Due to the high demands for productivity and quality of bearing and the shortage of traditional detection methods, this paper proposes an automatic detection system based on machine vision technique. The detection system uses digital image processing technology to process the images collected by CCD camera and finish identification for the surfaces of bearing quickly and accurately. Firstly, least...
The benefit of autonomous underwater gliders is their long range and high endurance for certain types of missions. Also by nature the gliders have relatively low operating speeds and depend strongly on the ocean environment of their operational area. To deal with this complex and changeable ocean environment, make the glider motion robust to parameter variations and disturbances, and track the predetermined...
Atmospheric path radiation is an important source to monitor atmospheric pollution and quality effectively due to its feature depending on the status of atmosphere only but not involving ground information. Based on atmospheric radiation transmittance theory, a new approach of generating atmospheric path radiation images for inhomogenous atmosphere over land on MODIS remote sensing images is proposed...
We propose a framework of data center consolidation with virtual private network and discuss the benefits and challenges of the proposed framework. After reviewing related background such as cloud computing and virtual private network, a preliminary case study in food industry by using our proposed framework is present to validate our idea. We believe that it paves the way to the future enterprise...
It is an efficient way to eliminate “crosstalk” signals in spatial audio reproduction by using crosstalk cancellation system (CSS). It is well-known that the problem of CCS is that it is quite sensitive to the listener's head movement. In this paper, we propose a global optimal algorithm based the Maximin criterion to provide increased robustness for the head movement. Simulation results demonstrate...
According to the randomness and self-correlation of individual demand, it is discussed in the necessity and feasibility of the introduction of fuzzy Markov chain model with weights to predict the future individual demand. The specific steps are explained: set up the classification by the standard deviation of sales series, and weighted by the standardized self-coefficients, calculated the transition...
A new type of multimedia conference system, that is, the conference system of centralized signaling controlling +distributed media processing, is designed in the paper. The server and client are designed respectively and main function modules are introduced in detail. At the same time, authentication mechanism based on PKI digital certificate is adopted to enhance the security of the system.
The flow field of the G4-73 centrifugal fan was numerically simulated with the software of Fluent. The numerical results show that large-scale vortex in volute were push forward, and the scale and intensity of vortex change in different circumferential cross section of the volute. A vortex-broken device was designed based on the idea of decrease flow loss and vortex noise through breaking large-scale...
This paper proposes a new SynFlood attack detection method based on the relationship between SYN segment, FIN segment and RST segment of TCP protocol. The method maps the relationship between the aforementioned three segments to the space geometry: their relation during a time quantum is mapped to a point, and a normal relation is mapped to a plane. The method detects SynFlood attack by calculating...
In order to better grasp the development trend and study the development path of service industry, this paper built ARIMA forecasting mode based on related statistical data from 1978 to 2008 to predict the service industry development of Sichuan Province, and analyze the forecast results.
In the view of characteristics of coke optical texture in micrograph, a classification method, which is based on Support Vector Machine and combining color and texture features, is proposed. Firstly, color features of the coke microscopic images of different optical textures are analyzed. With color features, isotropic and anisotropic components are classified. Then the gray level co-occurrence matrix...
For the development of network applications across multiple organizations, Service composition has been widely accepted as a promising technique. However, the atomic services are generally dynamic and distributed over the Internet, how to guarantee the adaptiablity capability in such open environment has become an important issue. In this paper, we address this problem by proposing a novel approach—PAAS...
For the aim of reflecting the randomness, fuzziness and the relevance between the two existed in the back analysis of earth rockfill dam's seepage property, by assumption of normal cloud distribution of the seepage parameter, a new back-analysis method based on cloud reasoning is presented in this paper. The method hangs together the uncertainty and reasoning, which is a think process that starting...
Evolutionary analog circuit design consists of fixed structural circuit design and non-fixed structural circuit design. The fixed structural circuit design indicates that the circuit topology has already been planned and only the component values need to be evolved. The non-fixed structural circuit design indicates that circuit topology and component values need to be evolved simultaneously. Differential...
The effectiveness in communication and the great economization in time and cost make the video conference system become an important application today. If the video conference system can be constructed on Internet, its practicability and application value will be improved greatly. However, with traditional web page techniques, it is difficult to construct a video conference system that has many complex...
Spurred by the remarkable development of VoIP technology, applications of real-time voice communication has come into widespread use over the Internet. However, their over reliance on PC environment restricts the applying fields of most VoIP software, and embedded VoIP is one of these blind spots. The VoIP application in this paper sets the hardware foundation on ARM9 embedded platform, adopts SIP...
A Emergency Communication System based on Wireless Mesh Network (ECS-WMN) is proposed, which is easy to deploy and report the incidents and information such as personnel positions to the field rescue center and related members of rescue groups using different approaches, such as pop-ups on a computer or PDA screen, WiFi video terminals, WiFi cell phones and so on. A ECS-WMN consists of a WMN gateway,...
To solve the date updates problem of drug Data Warehouse(DW), the General methods of data updates in DW and the problems that may exist in the process of data extraction, transmission and uploading were analyzed and studied. To achieve the requirements of reliability and rapidity of drug data updates, a method of incremental updates with triggers and intermediate table was proposed, and the design...
Since the mid of the 80's the cloth animation has attracted more and more attention in computer graphics. Cloth animations are now expected in films, games and virtual reality. In the simulation of flexible cloth models, solving a stiff differential equation is crucial. Therefore some methods have been proposed in computer animation, to build a fast and correct integration method for that task. The...
In eddy current nondestructive detecting, ant colony algorithm is adopted to select the centers of RBF network. The traditional clustering algorithm of RBF can't cluster much better, so the training speed and structure are limited. In this paper, ant colony algorithm with better optimal capability is used for optimize RBF network. The simulation result shows that ant colony algorithm has much optimal...
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