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In order to evaluate the management performance of post-earthquake reconstruction, it is a must to establish an evaluation index system on the supportability and efficiency of the public projects objectively and accurately, the practice of reconstruction project in the earthquake stricken area Lueyang County, Shanxi Province assisted by Tianjin Municipality Government is taken as a research objective...
In order to complete the exploration task, the lunar rover not only needs good mobility, and also requires compact structure, small volume, and light quality. Taking the wheel-legged mechanism of lunar rover as research object, this paper established three wheel-legged mechanism design constraint functions, considering the fluctuation of rover body, obstacle-climbing capability and anti-interference...
Current research community on data streams mining focuses on mining balanced data streams. However, the skewed class distribution appears in many data streams applications. In this paper, we introduce the method of discovering concept drifting on skewed data streams and propose an algorithm for classifying skewed data streams based on reusing data, RDFCSDS (Reuse Data for Classifying Skewed Data Streams)...
The problem reduction graph (PRG) is a model for formally describing the reduction processes of combinatorial optimization problems and systematically deriving efficient algorithms for the problems. The paper applies the model for several optimization problems including vehicle loading, vehicle routing, and warehouse location, which are typical problems in the domain of logistics. We work out their...
Summarize the main progress of research on Location—Routing Problem and the advance of optimal algorithm of LRP, give a comment on the research progress of LRP optimization algorithm and its characters, at last focus on putting forward some important development direction in this field. The optimal algorithm for the problems of LRP including location—allocation problems(LA),vehicle routing problem...
Power-law-integral is one normal conversion formula to indirectly estimate sub-picosecond-level clock jitter, but its result depended by the integral-upper-limit and lower-limit. How to choose integral limits are the key problem to use this formula for more reasonable. This paper introduces clock jitter in time domain and frequency domain, clock's phase noise characteristics, and from phase noise...
This paper studies the processing methods of non-cooperative of GPS signals. The non-cooperative receiver structure are firstly developed, then their math models are analyzed, and finally computer simulations are used to evaluate the performances. Theoretical analyses and simulation results reveal that the methods have an application widely.
Software is expected to be derived from requirements whose properties have been established perfectly. However, requirements are often inaccurate, incomplete or inconsistent as it is a very difficult task to define and analyze requirements. On the other hand, programs most likely deviates from requirements during implementation as the result of misunderstanding or/and neglecting requirements of software...
In order to achieve simple and effective control for the heating boiler, a single neuron PID controller is used in the burden control system of the heating boiler to deal with the feedback information and the quantity of fuel entering boiler. The controller can realize online real-time adjustment of the controller parameters according to the target function. The simulation results verify that, using...
In this paper, we study the implemental issues on a middleware-based spatiotemporal query processing system. The middleware approach is used to enhance query efficiency of spatiotemporal database systems built on a commercial object-relational DBMS (ORDBMS), such as Oracle. We first introduce the middleware-based idea for spatiotemporal query processing, and present two approaches to realizing the...
When tracking the moving targets in video image sequences with the existing particle filter, usually the tracking performance is not satisfactory due to the particle degradation and particle diversity loss. In this paper, we propose a novel particle filtering algorithm. In the algorithm, the multi-agent co-evolutionary mechanism is introduced into the particle re-sampling process and make the particle...
Magnetic induction tomography (MIT) is a new method to get the information of bio-impedance distribution. In this paper, we propose a sector multi-channel detection system for MIT to get the impedance information in the detecting area. In the system, the exciting coil and detecting coils were designed separately to enhance the excitation magnetic field intensity, and improve the detecting resolution...
A novel maneuver detector for radar targets is described. The high resolution Doppler profile is used to detect abrupt variation in attitude as the target maneuvers, which can be extracted within the coherent processing interval. A brief introduction of the detection principle is presented, along with feasibility study results from a back propagation neural network implementation.
In current live Peer-to-Peer (P2P) streaming systems, buffering delay is too large compared with the channel switching delay of traditional TV service provided by cable companies. In this paper, network coding is applied to a live P2P streaming system to minimize the buffering delay that users experience. A new scheduling algorithm is designed, with server-push mechanism and intelligent method for...
According to intelligence development requirement of combat vehicle fire control system, it is important to research the intelligent control architecture. The design principles of intelligent real-time hierarchical control architecture are put forward first, and then the architecture of the entire system and the architecture of each control layer are designed and illustrated in detail, at last the...
In this paper, we introduce the notion of “weight” to task's capability, and describe the use of case-based learning and reinforcement learning in a coalition formation model when games are repeated. Based on the the notion “weight” we introduce, a weight-based coalition formation algorithm is proposed, but this algorithm can't always generate good coalitions, to supplement this, an randomized weight-based...
Stratum 3D modeling and visualization technology is one of key and hot issues about 3D geological simulation research field. Borehole data is the main way to obtain required information about 3D stratum modeling. According to drilling data, the method of 3D stratum modeling based on multi-layer DEM is proposed. The method determines the sorting of stratum according to arrangement position of boundary...
Acupoints are the positions that the Qi and blood inject in the bodies. The changes in Qi and Blood of the human body would be shown in the changes of corresponding acupoint, with the changes of electric properties of these acupoints. This paper designs a hardware system based on the acquisition card PCI8335B, Which is mainly composed of AD9833, AD620 and AD8302. To measure the acupoints impedance,...
The aim of this paper is to build a Hidden Markov Model of normal driving state of drivers from the perspective of driving behavior to reduce traffic accidents caused by driver fatigue. Driving behavior data which drivers at normal driving state and the fatigues ones is analyzed. The vehicle control strategies of drivers are selected as hidden states. Data of driving behavior are denoted as observable...
The data flow of the rotary worktable with multi work stations is analysis based on the structure of the rotary worktable firstly. And then, the communication protocol based on Siemens PLC among different stations is defined. The realized processes of the general function process about the rotary worktable is described in detail. The application practice indicates that the communication protocol had...
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