Self-organizing wireless sensor networks (SOWSNs) are emerging as promising techniques in a variety of fields such as traffic control, military purposes, environmental monitoring, industrial process control, automotive, medical diagnostic, etc. The target scheduling problem in SOWSNs attracts attention of many academic researchers. Micro nodes are self-organized small devices with limited monitoring...
Based on multiple feedback circuit, design principle and design step of the active low pass filter are presented. The design method is verified by an active low-pass filter circuit which cut-off frequency is 2Hz, The experimental results show that the method has practical value.
Load balancing plays an important role in improving scalability and stability in Content Delivery Networks (CDNs) to meet the increasing demand on bandwidth. This paper proposed a modified algorithm that takes into account the equilibrium between load balancing and redirection proximity. We extended a fluid queue model which is adopted in the existing literatures to the overall CDN system. In the...
A method of blind signal separation based on second order statistic analytic equations is provided for a single hydrophone. This method takes second order statistics equations as restrictive conditions to construct blind separation criterion, then traditional blind separation methods are used to separate source signals through iterative optimization of genetic algorithm. Simulation demonstrates effectiveness...
The multi cameras network design has the characteristics of the multiple parameters and constraint, the large amount of computation, which is an optimization strategy for complex problems in theory. We find usually the exact optimal solution to be require the very large computation. Therefore, the algorithm efficiency must be considered. In the paper, we employ the heuristic attribute reduction algorithms...
This work analyzed the autonomic reactivity of real-scene stress. Electrocardiogram (ECG) data were acquired from 16 subjects during the final examinations of a semester and after a long winter holiday. Weak stress and strong stress datasets were constructed from the ECG data of the 16 subjects. Statistical analysis showed that there was significant autonomic reactivity difference between strong stress...
Functional connectivity networks from theta band of 16-channel local field potentials on prefrontal cortex of rat during working memory task are analyzed. The analysis of functional connectivity networks carried out though the method of multivariate conditional Granger causality method. The analysis of Granger causality connectivity networks are carried out during the time interval [0s, 2s], time...
A mining searching robot is designed to search and locate missing miners after mine disasters. According to the complex mining environment, the general structure and main parameters of the mine searching robot with four rolling-arm pedrails are presented, as well as the kinematic equation.
As the working medium of hydraulic system, the temperature of hydraulic oil has a great influence on working performance of the machine. Taking the sampling robot as the research object, while in order to monitor and adjust the hydraulic oil temperature and solve the difficulty problem of uneven temperature distribution in oil tank caused by heat transfer hysteresis of hydraulic oil, automatic control...
With the repaid growth of social tagging users, it becomes very important for social tagging systems how the required resources are recommended to users rapidly and accurately. Firstly, the architecture of an agent-based intelligent social tagging system is constructed using agent technology. Secondly, the design and implementation of user interest mining, personalized recommendation and common preference...