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A kind of braking variable pump acts as the core component of hydraulic braking system, which can settle load drag mechanical systems braking problems and its simulation testing systems are introduced. The test results indicate that reducing cracking pressure of variable mechanism and raising final braking pressure can automatically regulate braking torque according to the value of feedback signal...
In order to integrate existing decontamination equipment simulators of different architectures into a collaborative simulation system and improve their scalability and real-time performance, a High Level Architecture (HLA) and Object-oriented Graphics Rendering Engine (OGRE) based simulation training system is established. A data collector and RTI adaptor are introduced to realize communication among...
Considering the problem in network threat analysis, the paper proposes a vulnerability relation model based on extended time Petri net, which can lay the foundation for threat quantification analysis. Combined with object-oriented technology, the model is suitable for describing complicated network attack, which can reflect relation among vulnerable states iconically. By defining the threat of an...
Ground thread identification is the foundation of tactical decision-making to the reconnaissance and strike integrated UAV (Unmanned Aerial Vehicle). Based on the network structure of a single time slice, the traditional Direct-Inference (DI) algorithm is improved for fuzzy discrete dynamic Bayesian network model in this paper. First of all, the improved DI algorithm is derived, and then the network...
It is of great significance to improve the speed of data collecting and updating in a web crawler because there are a large number of web pages in Internet. A duplicated URL detection approach based on multi-layer bloom filter algorithm is proposed in this paper, which divides an entire URL into some layers and stores them in multi-layer bloom filter. The experimental result shows that the false positive...
Focusing on using Oracle to implement the differentiation of spatial topological relations between lines and regions, an algorithm based on Oracle Spatial Topology Data Model and the 9-intersection model is designed to determine the nine elements of the 9-intersection matrix, which can be used to differentiate the 19 kinds of spatial topological relations between a line and a region. Three elements...
A new image fusion algorithm based on lifting wavelet transform is presented in this paper. The source images are decomposed using lifting wavelet transform respectively. Aiming at the coefficients of low frequency and high frequency, this algorithm choose a different rule to fuse the image. To the low frequency, the spatial frequency based on the neighborhood add consistency check is elected as the...
The problem of privacy-preserving data mining has become more and more important in recent years. Many successful and efficient techniques have been developed. However, in collaborative data analysis, part of the datasets may come from different data owners and may be processed using different data distortion methods. Thus, combinations of datasets processed using different methods are of practical...
Computer technology plays a significant role in the information management of forest resource and its environment. This paper presented the study on the above-ground biomass of larch forest in the mountainous region of Xigouli Village, Sihai Town, Yanqing County, Beijing, China, adopting computer technology and making use of survey data to perform the fitting of biomass model, based on which the biomass...
This work proposes a multi-objective artificial bee colony (MOABC) for optimizing problems with multiple objectives. We have adapted the original Artificial Bee Colony (ABC) algorithm to multi objective problems with a grid-based approach for maintaining and adaptively assessing the Pareto front. The Pareto set is used to control the flying behaviours of the individuals and structuring the bee colony...
In the occasion of outdoor warehouse and large scale indoor warehouse, the currently widely used infrared and smoke sensors for fire alarm may can not work properly for various kinds of interferences and noises, which is prone to error fire prediction or omission prediction and other problems. Based on the design of reliable flame recognition algorithm, the paper constructed practical fire alarm system...
Although MVC pattern is widely used in software design and development, bringing us many advantages, it still has weak points. Author puts forward an improved MVC and applies it to stowage plan component design in container terminal management system.
In this paper, the unified condition for stability of g-frames is established, and it is shown that the obtained results cover the existing results. The stability of g-Riesz bases is also established.
This paper aims to construct a Smart Home system based on ZigBee wireless communication technology. The article will introduce the Smart Home industry and analyze the advantages of ZigBee wireless communication technology used in the Smart Home system. It describes the structure composition of the Smart Home system based on ZigBee, and finally gives the system design concept and implementation approach.
The resource requesters and providers often belong to different security domains in the openning network. It can be achieved through automated trust negotiation to build confidence and to ensure the security of shared resources. Speeding up subsequent negotiations between the same negotiators is a problem worth of research. This paper analyzed the automatic trust negotiation and proposed the role-based...
Outdoor unit of household air conditioner is studied widely in household air conditioner parts. Optimizing it may improve air conditioner' EER (Energy Efficiency Ratio) better and make its cost lower than optimizing other parts can. To reduce the cost of the household air conditioner and improve its EER, this paper first studies the correlation among configuration of outdoor unit and heat transfer...
The re-circulating mechanism of ball screws plays a vital role for its providing the path for steel balls rolling in screw grooves generally in high-speed/high-precision ball screw transmitting systems. However it is very hard to directly measure the ball's motion in the re-circulation for the closed recirculation groove. In order to investigate the impact-contact between the balls and re-circulating...
Reading and reference many books and articles, and then analyze and study the KMP algorithm, BM algorithm and a variety of improved algorithms. Summarizes various of the advantages and disadvantages of the pattern matching algorithms and in-depth study the advantages of the algorithms. And on this basis, a new algorithm - KMPBS algorithm is introduced. The algorithm refers to BM algorithm, KMP algorithm...
In order to solve the multi-target tracking problems in video sequence, this paper presents a algorithm integration Mean-Shift(MS) and particle filter(PF) called KMSPPF to tracking multi-target. The algorithm uses the K-means clustering results as the optimal input to the Particle Filter, Mean Shift follows by resampling and then particles converge to the true state of the target, thus overcomes the...
Based on TMS320F2808 DSP chip, this essay introduces a composite frequency signal detection method and proposes a spectrum Sa function proportion table lookup method. Through sampling twice, combined with IQ math technology, as well as revising of appropriate sampling frequency, the experiment executes a high-speed FFT operation based on 2048 point and realizes fast, high-resolution calculation of...
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