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Instant central control is needed for static wireless network to perform specific tasks, especially those time-critical ones. Until now, there have not being a special-purpose communication model designed for applications of this type. This paper introduces a lightweight base-to-node communication model for static large-scale wireless networks; the goal is to provide fast and reliable message delivery...
A new method to quantify human error probability (HEP) is proposed. Firstly, the general data are analyzed. The problems are pointed out when using the general data directly to quantify HEP. It is emphasized that the general data must be adjusted before being used in HEP quantification Secondly, the idea of CREAM basic method is introduced, and the process of its HEP quantification is shown. By analysis,...
A new CCD Auto-Guiding-to-Star System is proposed to minimize the tracking errors of the telescope tracking system, and also to improve the accuracies of observation. This paper discusses the key algorithms of CCD Auto-guiding Star System, and design of the software which can connect the workstation with the CCD camera to collect, analyze and process data. This system has showed reliability and high...
Through the analysis of the DC-side current spectrum of DC-AC converters when the rotor faults occur in induction motors driven by the DC-AC inverter, this paper discovers that the rotor fault signature information is distributed in the multiple frequency bands of DC-side current spectrum. A fusion algorithm is proposed. First the algorithm converts the fault signature frequency components distributed...
This study presents a new method to improve simultaneously reliability and minimize active power losses in radial distribution systems (RDS), through a process of network reconfiguration. The methodology adopted to enhance reliability uses the Monte Carlo (MC) simulation and historical data of the network, such as the severity of the potential contingencies in each branch. Due to a large number of...
The paper introduces a simple and efficient approach to calibrate camera in the parallel binocular stereo vision system, which uses numerical analysis based on least square error to obtain the relative difference of the two cameras' principle point and extrinsic parameters. First, we use Zhang Plane-based Calibration Method to verify the intrinsic parameters of cameras; second, we use least square...
For unpredictable manner of mobile ad hoc network (manet), due to mobility of nodes in network, the shortest path is not necessarily the better path. If we do not consider the stability of routing path, then wireless links may be easily broken. Hence it is important to find a route that endures a longer time. Recently, efforts in this field have dealt the parameters battery power or trust of a node...
Building trust relationships between peers is an important and difficult part in the security needs of P2P networks. Various reputation systems have been presented to solve it. Theory Basics, applications, advantages and disadvantages of those methods has been discussed in this paper, finally we describe research that exemplifies compromises to deliver a useable, implementable reputation system.
Based on load incremental approach, finite element model of inclined truss structure is established by using Ansys software. Then load factor, unit of effective strength and load increments is obtained by finite element analysis. With a minimum load increment norms and the branch - bound norms of the stage critical strength, the main failure modes of inclined truss structure is educed. Finally the...
In this work, we present an improvement on the belief propagation (BP) algorithm concatenated serially with order statistic decoding (OSD) for low-density parity-check (LDPC) codes. We use the segmented accumulation of log-likelihood ratio (LLR) of variance nodes as the ordered information metric to reconstruct received sequence. This method can reduce the sensitivity of accumulated parameter selection...
The analysis of parametric probabilistic sensitivity analysis is important for reliability-based design, which shows changes of system reliability caused by the change of basic variances. In this paper, a fast approximate method of reliability analysis based on the commercial FE simulation-artificial neural network-Monte Carlo simulation is proposed, which can save the calculation cost with efficient...
The Support Vector Regression method have complete statistical learning theory basis and excellent performance on small samples. Based on the introduction of support vector regression method, the paper introduced Support Vector Machine (SVM) into wireless communication network reliability prediction. Using support vector regression method, the reliability prediction model of wireless communication...
It established the ship-to-air missile flight reliability evaluation methodology based on triangular fuzzy number according to the missile flight reliability concept. Thereinto, it established the missile flight reliability evaluation model, and put forward the triangular fuzzy number evaluation method for the reliability of examination before fire,fire,guidance and hit,and also evaluated the triangular...
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