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Energy conservation and rational usage of energy is China's basic national policy. The present steam consumption and heat loss of its pipeline network in Tianjin airport economic development zone is recorded, then zonal steam distribution efficiency is calculated to be 37.56 % by the steam consumption data, and zonal heat loss is in inverse proportion to steam distribution efficiency with factor of...
Current Web Service systems are based on "central" UDDI servers and syntactic description of Web Services, which are fragile and unscalable, and do not support Semantic Web Services. It is necessary to replace this UDDI structure with a new one. P2P is such an infrastructure, which allows the sharing of resources and services by direct interaction between equal nodes. Therefore, a discovery...
Adaptive Inverse Control (AIC) based on Recursive Least Square (RLS) is applied in Control Loading System (CLS) of Flight Simulator (FS) .The algorithm was used to improve position tracking accuracy as an inner loop of CLS. This paper presents the implementation of a rapid prototyping control system based on RAT-LAB simulation environment, which involves the design of AIC and RLS algorithms using...
Automation of semantic web service composition is one of the most promising challenges in semantic web service research area, in which security research on service composition has attracted more attention. In this paper, we present a model of Action labeled Kripke Transition System, namely AKTS which can abstract interaction behaviors involved in service composition and turn them into logic symbols,...
A kind of semantic web service matching method based on service hierarchy is proposed, which utilizes the automatic reasoning capability of OWL to construct concept hierarchy and then encodes concept hierarchy in order to transform the complex deduction of inclusion relationship between concepts into simple arithmetic comparison. We give the definition of concepts related with service hierarchy and...
It's an important way for C-band SAR applied to oceanic monitoring. The AESA based on T/R module has high reliability and become a key research point. Due to the satellite SAR application, the T/R Module needs high-efficiency, low-power, low-mass, low-cost, high amplifier and phase stability. In this paper, a dual-channel C-band T/R module has been developed. In it's working band, the T/R module provides...
Optimizing network energy consumption is one of the most important issues in wireless sensor networks (WSNs). In this work we consider the energy consumption optimization problem for data collection applications. The network energy consumption can be reduced by letting a subset of sensors go into energy saving sleep state. However, the cost of the energy saving is the loss of observation precision...
This paper presents the implementation of the PID based cascade control system for the adjustment of density of starch production line. The control system involves the design of RSLogix500 and RSView32 and was used to adjust the density of the starch production-line. The principle of the starch production-line was analyzed and the mathematical model of cascade control loop of starch production-line...
Three axes hydraulic shaking system as the means to recreate vibration environment can accurately reproduce reference power spectrum density and time history response. The vibration control is a key technique to meet the requirement. This paper introduces the principle of the three-axis six-DOF shaking table at first and then designs hardware system using TMS320C2812 to acquire the analog and digital...
Being an evolution of IEEE 802.16e, IEEE 802.16j mobile multi-hop relay (MMR) is proposed to gain coverage extension and throughput enhancement. This research conducts theoretical analysis and performance evaluation on the on-demand bandwidth allocation in IEEE 802.16j MMR networks. Theoretical analysis shows that such systems using conventional bandwidth allocation will seriously suffer from low...
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