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This paper proposes a novel parameters estimation and code recovery approach of spread spectrum code based on distributed cooperation under non-collaborative condition. The proposed approach takes full advantage of the difference in the characteristic between direct sequence spread spectrum (DSSS) signals and noises to filter out the high frequency component and some noises by wavelet decomposition...
This paper introduces a combined control strategy for wind/storage systems. The strategy is based on an on-site monitoring system which not only provides basic SCADA functions but also provides interfaces that can be implemented by advanced applications. The combined control strategy is deployed as an advanced application in the monitoring system. The key features of the strategy are fluctuation stabilizing...
With the purpose of investigating the thermal efficiency of steam-injection boiler, the thermal efficiency calculation model was built. Basing on the measured data from Xianhe oil production plant in Shengli oil filed, both energy efficiency and exergy efficiency were calculated and the boiler operation state was analyzed. Moreover, the influences of smoke temperature, excess air ratio and steam quality...
Progresses in the study of speciation and biological uptake of arsenic in soil are introduced. The researches on bioavailability of arsenic are summarized, and the main factors which affect arsenic bioavailability are emphatically discussed. Relationship between speciation and availability of arsenic is concluded and the concerned problems and future development orientation are pointed out.
In China traditional methods of building Modbus remote monitoring system have some drawbacks. They are tightly dependent on telephone lines if wired communication was used; transferring speed is limited when using wireless technology like GPRS; Proprietary interfaces make it hard to reuse software design and new information island may be formed. So a new architecture for Modbus remote monitoring application...
According to the environmental parameters monitoring requirements in greenhouse, a wireless measurement and control system for temperature and humidity is developed. It overcomes the disadvantages of wired monitoring system, such as complicated wiring, and difficult maintenance. The environmental parameters in every greenhouse were measured and controlled by microcontroller. The hardware and software...
The redox active substance of all-vanadium redox flow battery (VRB) is stored in two separate tanks. In the pumped circulation, the solution flows through the battery, oxidation-reduction reaction takes place on the electrode in both sides of the ion exchange membrane. Compared with other kinds of secondary batteries, VRB has its own characteristics. The arrangement and design of VRB are very flexible,...
The video monitoring system plays important roles in the military, public security, bank, transport, hotel, important storehouse, gymnasium, intelligent building, civilized community, airport and other fields. However, traditional monitoring system has many shortcomings. This thesis researches the intelligent monitoring system based on digital image processing, expounds the analysis technique of intelligent...
In order to implement the balanced distribution of the Service Grid system and to improve the utilization ratio of the resource as well as handling up rate of the system, the system of dynamic dispatching system basing on the Grid service has been designed and implemented after the study on the Grid service. Firstly, a layered loading balancing scheduling mode has been proposed, providing the structure...
Understanding Internet link delay is an important key of taking full advantage of Internet resources. In this paper, we find that the link delay follows gamma distribution using maximum likelihood estimation based on data measured in a large-scale network. The correlations between the link delay and the edge load, the node degree, and the betweenness are analyzed respectively. The link delay distribution...
In the modern production process, the applications of the online quality control technology receive extensively recognition, and it is considered a major way to enhance the market competitiveness of enterprises. This paper presents a network application environment SPC technology online quality control system. Describe the system component, research and design of the model of the system architecture...
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