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With the rapid development of Internet technologies such as cloud computing and big data, the scales of distributed information systems in big companies have grown to enormous sizes. Automatic detection and diagnosis of system faults in the large-scale information systems is complicated and important in both practice and research. In this paper, we propose a Graph-based Fault Diagnosis approach in...
As the application of information system has been increasingly constructed in large enterprises and institutions, IT operation and maintenance have been developed into a integrated operation and maintenance system with multi-grade, multi-level and multi-control parameters, and its security level is difficult to be measured with a single indicator. On the basis of satisfying the dispatching and monitoring...
Data capture is important for some critical network applications, such as network diagnosis and criminal investigation. In multi-channel wireless networks, the fundamental challenge for data capture is how to assign operation channels to wireless sniffers. The existing approaches make some impractical assumptions, such as the prior knowledge on network traffic and the perfect conditions of data capture...
With the development of e-Learning applications, there is an increasing demand to measure or evaluate learners' behavior in online courses. Various technical approaches have been proposed for this purpose, among which the measurement of the learner's head pose is a fundamental technique. It can be used to evaluate the learner's attention, e.g. whether he/she is reading the online course materials...
under the background of climate warming, obvious decrease trend in frequency and intensity of cold wave that invaded Guangdong province, South China have been observed in recent years. However in January of 2016, a named “super cold wave” which caused serious influence on human health and agriculture production invaded Guangdong. In this paper, satellite derived land surface temperature (LST) from...
Lifetime of wireless sensor nodes is a big challenge in bridge structural monitoring as these nodes may be deployed inside the bridges. In this situation, it is infeasible to replace batteries or harvest solar and wind energy. To prolong lifetime, vibration energy begins to be utilized to replenish energy for sensor nodes. In this study, a vibration energy harvester based on Micro Fiber Composite...
In day care for a driver, continuous ECG (electrocardiogram) monitoring is required because symptoms of cardiac arrhythmia and hypoxia can occur unexpectedly. To enhance care service and quality for a driver, this study proposed a real-time ECG monitoring system of transmitting ECG signals to Android mobile phones or tablets through Bluetooth transmission in vehicles. These signals are then uploaded...
In the last decades, along with the continuously evolving of the Internet Protocol-based network, numerous Internet programs that have played critical roles in the current technological era are being developed inclusive of interactive applications. Nevertheless, the transmission performance and user experience of these instant services that require high bandwidth or low latency may suffer when serious...
Self-adaptation of Multi-agent systems requires dynamic decision making and planning at runtime. Modeling the contextual and executable requirements of such systems as planning actions and states, this paper proposes a requirements-driven planning approach to self-adaptation. The planning model includes the states of the system context and the actions describing the behaviors of its multiple agents,...
Accurate and reliable information on land use is a basis of agricultural disaster warning and emergency action. The natural disasters typhoon, cold disaster, drought, and so on, have great influences on agricultural production in Guangdong Province, China. Through literature analysis at home and abroad, it was pointed out that Chinese HJ satellites have become important sources of remote sensing images...
Foundry integration and manufacturing challenges for 2.5D TSV technology are discussed, with focus on in-line defectivity and warpage control. The major defect types and yield correlation are scrutinized. The results show that Cu out-diffusion from TSV due to oxide liner isolation defects has a bigger impact on yield compared to open TSV. The model suggests that one redundant TSV is enough to mitigate...
To find the changes of surface compositions during life time of the Scandia-doped impregnated dispenser cathodes, two cathodes have been tested at an activation temperature of 1150°CB-Mo and an operation temperature of 1000°CB-Mo, respectively, in an AES system up to more than 7,000 hours. Surface compositions were monitored in-situ at intervals. The tested results have been reported and discussed...
Smart Grid is an important application in Internet Of Things (IOT). Monitoring data in large-scale smart grid are massive, real-time and dynamic which collected by a lot of sensors, Intelligent Electronic Devices (IED) and etc.. All on account of that, traditional centralized storage proposals aren't applicable to data storage in large-scale smart grid. Therefore, we propose a data-centric storage...
There is vigorous development in Healthcare terminals. It not only reduces much of medical resources, but also is more convenient for people to monitor their physical condition, so has met with a warm reception. However, all of the devices in the terminals are electronic. Some small factors have an impact on the measuring result, lead to more or less deviation even mistakes. The paper researches on...
Operating data in smart grid are usually collected by a lot of sensors in Cyber-Physical systems. Monitoring data in large-scale smart grid are massive, real-time and dynamic. All on account of that, traditional centralized storage proposals isn't applicable to data storage in large-scale smart grid. Therefore, we propose a data-centric storage approach in support of monitoring system in large-scale...
Abstract: In view of using symmetrical normalization for smaller deviation than standard normalization for the multi-tau photon correlator in the whole delay time range but need more monitor channels. We suggest employing symmetrical normalization when the lag time larger than 16384 and standard normalization smaller than 16384. Deviation of symmetrical normalization and standard normalization was...
Cable tension force is one of the most important criteria for assessing the work condition of a cable-stayed bridge. As a result, it is necessary to be monitored during operation. Rapid development of wireless sensor network (WSN) technology makes it possible to realize cable tension monitoring conveniently. In this paper, a wireless sensor network based monitoring system was proposed for cable tension...
This paper presents a hybrid sensor network with both fixed nodes and mobile nodes for monitoring and protecting Milu Deer, a specific kind of rare animals in China. Our goal is to provide unprecedented fine-grained environmental and individual data for zoologists and explore potential problems in hybrid sensor networks. Total 116 nodes have been deployed up to now, which consists of 30 mobile nodes...
The Mote architecture is the most popular platform used in wireless sensor network applications. In this architecture, microcontroller is responsible for all jobs, such as scheduling, sampling, computing, and communication. In the past one year, two practical applications: bridge structural health monitoring system and rare animal monitoring system are developed and deployed in Wuxi and Beijing, China...
In order to meet the requirements of the system running environments simulation for virtual machines' performance optimization and anomaly detection, an extensible tool named Characteristic Scenarios Simulator for Virtual Machine was developed base on the summarization and analysis of characteristic scenarios of virtual machines' running. The simulator takes an Analyser-Manager-Worker core architecture...
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