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This paper proposed a highly sensitive micro-force sensor using curved PVDF for fetal heart rate monitoring long-termly. Based on the finite element method, numerical simulations were conducted to compare the straight and curved PVDF films in the aspects of the sensitivity for the dynamic excitation. The results showed that the peak voltages of the sensors varied remarkably with the curvature of the...
In order to understand the electro-mechanical characteristics of the piezoelectric sensor in weigh-in-motion system and theoretically support the data post-processing, this paper established a 3D solid finite element model of beam type piezoelectric sensor of a weigh-in-motion system, which was embedded in the road. The vehicles ware simulated as moving concentrated load. The signals of the output...
Site infrastructure sharing is the trend of future base station construction. Telecom infrastructure operators require for smooth upgrading and low TCO when sharing sites power supply, spaces and operation management. This paper introduces a new integrated hybrid power supply system suitable for the site sharing requirements. It perfectly combines many functions together, such as energy generation,...
The area of the state of Oregon has 98,381 square miles, which is the 9th largest in United States. Its population ranks 27th in United States, and most of its population residents in the Willamette valley, a narrow area north to Portland and south to eugene and home to eight of ten most populous cities in Oregon. This implies that most of Oregon are rural areas. It is necessary to design and deploy...
Based on wireless sensor networks (WSNs), tungsten mine environment monitoring system used of ZigBee was designed. Sensor nodes were arranged under tungsten mine flexibly. It transferred various safety indicators within the mine to the gateway node by the cluster head nodes directly or indirectly, then via transmission network uploaded the data to the ground monitoring center by the gateway node....
How to effectively build reliable multi-path and how to reliably deliver packets over multiple paths are still two challenging tasks when there are malicious nodes in wireless ad hoc network. To solve this question, we proposed segment-based multi-path routing protocol(SMRP) in this paper. Theoretic analysis shows that SMRP is more secure and reliable than other kinds of routing protocols. Therefore,...
Malware is one of the most serious threats to the security of computer systems. Many approaches have been provided and various systems have been designed to detect intrusion from anomalous behavior of system calls which provide the interface between a process and the operating system. Though these techniques look quite effective, a key element seems to be missing - the inclusion and utilization of...
Sci-tech innovative talents have been most important sources for Jiangsu province, and prominent achievements of Sci-Tech jog have been made. In this paper, the definition of Sci-tech innovative talents is explored first, and the gap between demand and supply of Jiangsu Sci-tech innovative talents is predicted based on GM (1, 1). Lastly, some policy suggestions are proposed.
In collaboration with NGOs dedicated to supported employment programs, a novel context-aware task prompting system (CATPro) is presented in this research to increase work and life independence for cognitive-impaired patients such as people with traumatic brain injury, cerebral palsy, mental retardation, schizophrenia, dementia, and Alzheimer's disease. Preliminary results show the prototype is very...
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