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Aeronautical maintenance is an important work to assure the reliability and availability of the aircrafts. Firstly, the characters of aeronautical maintenance were analyzed. Then the bacteria foraging optimization algorithm programming flows were given out according to the maintenance task scheduling of aeronautical equipment. Finally, the mathematic model was established, the coding strategy was...
This paper based on the traditional learning resources of collaborative-filtering personalized recommendation systems exist sparse and cold start is put forward based on the personal learning resources study migration recommend model, study method can move from existing data transfer knowledge, to help the new knowledge in the future study. E-Learning environment, use of knowledge transfer for learners...
Using variational approach in the effective mass approximation, the hydrogenic donor impurity binding energy is investigated in detail in cylindrical GaAs/Ga1-xAlxAs quantum dot in the presence of an electric field applied along the growth direction of the quantum dot (QD). The binding energy increases gradually, reaches a maximum value, and then decreases quickly to the special value as the QD radius...
In view of the characteristics of chemical industry process's nonlinearity and time delay, a novel fuzzy immune PID control method was proposed. It adjusts the PID controller's parameters based on the biological immunity principle, and fuzzy reasoning is used to realize the nonlinear immunity feedback function. By this way, the fuzzy immune PID controller can adapt that the pH value changes in large...
According to the actual arrangement condition of the grid maintenance scheduling in Lanzhou Power Grid, which has formed the database of high normative and strong consistency, the knowledge-base can be constructed by applying the expert system technique. Besides that, basic data of maintenance scheduling can be intelligently analyzed and adjusted by using active rule model, finally maintenance scheduling...
Aiming at the designed defects of the traditional wireless network node, a kind of designed scheme of wireless network coordinator based on ZigBee and GPRS technology are proposed. The system uses LPC2119 as the core and uC / OS - II as operating platform. It realizes the establishment and management of ZigBee network, the data communications between ZigBee network and GPRS network. The system can...
Interpolation methods are very popular in many practical areas. While, some times we do not know the exact value of the measured quantities, because of the inevitable measurement inaccuracy. However, we can describe the uncertainty by using fuzzy numbers. In this paper, the polynomial interpolation of trapezium fuzzy numbers is discussed. First, a general form of the polynomial with fuzzy coefficients...
Standard SVM training has O(m3) time and O(m2) space complexities, where m is the training set size. It is thus computationally infeasible on very large data sets. The author first reviewed the standard minimum enclosing ball (MEB) problems in computational geometry and presented the extensions of minimum enclosing ball problem, Then proposed a novel SVM algorithm-extension core vector machine algorithm...
The problem existing in the gripper part of the boxing machine is analyzed to put forward a design of bidirectional-regulation gripper mechanism, to carry out the design of pneumatic and mechanical part and to specifically illustrate the structure composition, operating principle and packing technology of the mechanism. The result shows that the bidirectional-regulation gripper mechanism can properly...
In view of the pool real-time interaction performance in the EAM systems based on web services, the effective solution based on serialization and data compression is proposed. The Remoting Format in. NET 2.0 frameworks is used to serialize and compress Data Set transferred between web services to improve the real-time interaction performance in system. The result demonstrates that, the schema can...
With the development of the Internet and computer, more and more Tibetan documents have brought large amounts of information. With time, the amount of data available has become so vast that we need ways to find information. In this paper, we discuss the Tibetan word structure and encoding, and implement a Tibetan search engine system using XML documents. Testing shows the searcher can find the Tibetan...
This paper describes some general constrained optimization problem-solving methods at first, and then different ideas of combining particle swarm optimization with stochastic ranking are proposed. Accordingly, three algorithms (SR1, SRe1, SRhs) are constructed together with disturbance idea and their pros and cons are analyzed. Finally, some typical benchmarks are used to confirm their performance...
Estimation the shape and position of the objects is an important subject in ground penetrating radar(GPR). Migration method in domain of seismic techniques is effective to locate and reshape the objects. Kirchoff migration method is based on electromagnetic wave equation. It is an accurate calculation method. Kirchoff migration method has widely adaptabilities with different horizontal and vertical...
Safety-related system development is now standardized in some intimation standards such as IEC 61131, For safety-related industrial applications, we propose using Function Block concept to facilitate system specification and verification testing. Control loops are built from components taken from domain-specific function block libraries. Code inspection and testing are the two predominant quality...
This article conducts a research on OGSA(Open Grid Services Architecture) and programming under the grid environment, i.e., encapsulating the traditional distributed software resources under the grid environment using web service, encapsulating the service provided by isomerous software resources as web service, and encapsulating the components providing web service as a new service. In view of components,...
Routing problem in wireless sensor networks is a hot research. Researchers have been searching for a good algorithm. Ant colony algorithm is robust, positive feedback, distributed. It has excellent performance in solving many complex optimization problems. This paper improves the ant colony optimization algorithm with the consideration of nodes energy, network latency, packet loss rate and other QoS...
video monitoring system plays a vital role in maintaining social stability, it can capture device and monitor the scene by making use of camera and advanced image recognition technology. When the abnormal situation is discovered, it can send out alarm sound and record the scene at the same time by using pictures or video, and at last use a variety of ways to notice the danger. The topic on video monitoring...
The modeling method becoming more standardization now as simulation technology developing. In simulation of ship combat system, the data model has three levels including conceptual, logical, and physical. UML and XML is used to do data modeling as UML class diagram for conceptual model, XML Schema for logical model, and XML documents for the final data which is described and restricted by XML Schemas...
The method of logic analysis could be used to assist in searching for the errors of the program. The present researches mainly focus on the infinite loops, memory leaks, pointer errors and so on. Neither of them paid any attention on the correctness of the branch condition, the error of which usually occurred in the software developing process. The concept of program condition self-contained is defined...
This paper introduces difference mutation idea for diversified search to elitist search-based immune optimization algorithm for function optimization. The idea of difference mutation is merged into the process of clonal selection and hupermutation algorithm, so that the new solutions have the tendency to get close to the global optimal solution. The introduction of differential algorithm idea greatly...
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