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In view of the development of the computer network and the vehicle networking technology in the field of transportation, the traffic data which need to be processed in the practical application is explosive. ARM-Linux was proposed based on cloud computing hadoop platform real-time monitoring remote terminal in the big scheme of data analysis and calculation, Hadoop is facing big data computing, open...
With restrict of market and society policy, some manufacturing firms' profit becomes less and less especially in the hydraulic fracturing field. This paper proposes a hydraulic fracturing product service system (HF-PSS) as a new firm strategy to shift from product-centered paradigm to service-centered paradigm for maximizing profit and totally satisfying customer needs to tackle this dilemma. Considering...
Sound waves in audible range are used for agglomeration monitoring and early warning of fluidized bed for the ethylene polymerization. According to the energy distribution in the frequency domain and the shift characteristics of the power spectral centroid of the normal and agglomeration signals, the sampling rate and signal pre-processing approaches are determined. Energy ratios of each wavelet packet...
Smart Home System is an inevitable trend of modern home due to its increasing affordability with development of IOT (Internet of Things). A complete Smart Home System empowers users to centralize the control of home devices, meanwhile, enables system administrators to manage them conveniently. For example, administrators can update/upgrade system data to support new equipment, push news and advertisements...
Digital Ocean is of great strategic significance for the development of the country, its powerful data acquisition ability and spatial analysis ability to provide support and security to safeguard the national marine rights and interests, the reasonable exploitation of marine resources. Current situation and development trend of the digital ocean is analyzed and forecast. Based on the geographical...
Route backtracking has been applied in many fields, especially in tracing criminal cars. However, because of weak light, shading or shelter, plate numbers are unable to be recognized and the vehicle cannot be traced. So, this paper put forwards a route backtracking method based on video data and road network. the method get routes information by means of vehicles features extraction and matching method...
Dynamic monitoring crop growth can keep track of the crop growth status, seedlings, soil moisture, nutriture and their changes and then the appropriate management strategies will be taken to ensure timely the normal growth and development. This study represented the potential of satellite hyperspectral imagery to monitor winter wheat biophysical and biochemical characteristics through narrow-band...
Heading stage is the key stage of corn in whole growth phase, degree of corn tasseling directly related to the yield and quality in heading stage. Remote sensing data in the reflective optical domain function as a unique cost-effective source for providing spatially and temporally distributed information on key biophysical and biochemical parameters of vegetation. Based on remote sensing data to acquire...
Voltage sag has been one of the most concerned problems of power quality. Identifying the location of the source of voltage sag is critically necessary for power-quality troubleshooting, diagnosis and mitigation, and it is helpful to distinguish responsibilities and solve disputes caused by voltage sag. This paper analyses and compares four existing location methods based on reactive power change,...
We investigate link-state advertising in multi-domain networks with dynamic traffic. A novel triggering scheme is proposed to monitor a subset of domain links, and thereby achieve a balance between salability and accuracy.
Technology advantages of body sensor networks (BSN) have shown great deal of promises in medical applications. In this paper we introduced a wearable device for biofeedback application based on the BSN platform we had developed. The biofeedback device we have developed includes the heart rate monitoring belt with conductive fabric and the biofeedback device with respiration belt. A wearable respiratory...
Technology advantages of body sensor networks (BSN) have shown great deal of promises in medical applications. In this paper we introduced a wearable device for biofeedback application based on the BSN platform we had developed. The biofeedback device we have developed includes the heart rate monitoring belt with conductive fabric and the biofeedback device with respiration belt. A wearable respiratory...
In order to solve the problem that the present E-learning platforms are insufficient to support learning process, this paper brings the thought of workflow into E-learning environment, presents the definition of learningflow and learningflow system, analyzes the characteristics and main function modules of learningflow system, then a learningflow reference model is put forward and the key problems...
In this paper, we study the efficiency of inter-domain state advertising in multi-domain networks, in which the intra-domain topology is substituted with a full-mesh topology of abstract links interconnecting the border nodes of the domain. The advertising trigger rate of individual abstract link is taken as the metric of efficiency. We present an analytical model that reveals the contributions of...
The article introduces the mechanism of the power cable fault and the present status of temperature and strain online monitoring of power cable firstly. Then the sensing theories and design of fiber Bragg grating (FBG) are analyzed. A temperature and strain online monitoring system of power cable based on FBG, which uses a sensor network combined wavelength division multiplexing (WDM) and time division...
As security and reliability issues grow to be major social concerns, there are growing interests in combining multiple global navigation satellite systems (GNSS) into new generation of GNSS. Consequently traditional integrity monitoring systems like receiver autonomous integrity monitoring (RAIM) techniques which are generally based on the assumption of a single outlier model, will not perform well...
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