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Diabetes, hypertension, cerebral arteriosclerosis and other diseases have become great threats to human health, so it is urgent to explore their initial symptoms for early prevention and treatment. As an important part of small and medium-sized vessels of human body, retinal vessel is the only deep capillary that can be non-traumatic directly observed and its morphology, such as vascular diameter,...
Considering the control performance requirements of high-performance printing press, a sliding-mode speed controller with torque feed-forward compensation is proposed in this paper. First, a sliding mode control method is presented for the permanent magnet synchronous motor(PMSM) of the printing press. Then, in order to reduces chattering phenomenon caused by system parameter variations and external...
The chattering is inevitable in using Variable Structure Controller (VSC) to control two-wheeled unstable vehicle. Although the traditional methods which are improved the reaching law and the switching surface effectively impair the chattering, they impair the anti-interfering of VSC at same time. To solve this problem, the dynamic pseudo sliding mode control with disturbance compensation term is...
This article uses the autoregressive distributed lag - Error Correction Model (ARDL-ECM) to analyze the real estate prices and interest rate data from the fourth quarter of 1998 to the first quarter of 2008 .The results show that the interest rate and the real estate prices , in the long run, are negatively related; in the short term, the impact of interest rates on real estate prices lags 2 periods,...
An efficient service matching process is crucial for solving complex problems based on heterogeneous agents. Agent cooperation can be achieved through matching requesting agents with service-providing agents, and, through such cooperation, multi-agents can solve a variety of complex problems. Improving the efficiency of the agent-matching process has become an important issue in multi-agent research...
In this study rational evaluation indicators were established to study Shanghai urban rail transit system, and the method of Extended Contributive Rule (ECR) was used to hierarchically analyze rail transit service quality, determines the different levels of service, and identifies various people groups' requirement difference in the service quality. It was aimed to objectively evaluate Shanghai urban...
In spite of the rising demands for reusable information systems, current designs are still insufficient in providing efficient reusable mechanisms for system design. One of the major problems hindering the development of information reuse in most traditional systems, which include component-based systems and object-oriented systems, is the lack of the self-organising ability among the system components...
A critical aspect of applications in Wireless Sensor Networks (WSNs) is network lifetime. Power-constrained WSNs are usable as long as they can communicate sensed data to a processing node. Poor communication links and hazard environment make the WSNs unreliable. The existing schemes only consider that the state of a sensor covering targets is in binary mode: success (cover the targets) or fail (cannot...
With the ever-increasing wireless multicast data applications recently, considerable efforts have focused on the large scale heterogeneous wireless multicast, especially those with large propagation delays, which means the feedbacks arriving at the source node are somewhat outdated and harmful to the control actions. To attack the above problem, this paper describes a novel, autonomous, and predictive...
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