The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Distributed generators and micro-grid connection in distribution network has changed power flow from unidirectional to bidirectional. Therefore, it is necessary to install directional components to locate the fault position accurately when there is a short circuit fault in distribution network. However, voltage information is not available because there are no voltage transformers in most of the current...
The high-spatial-resolution aerosol retrieval algorithm using Chinese High-Resolution Earth Observation Satellite I (GF-1) wide-field images is developed, which retrieves the aerosol optical depth (AOD) over China for studying the impact of aerosol on climatic and environmental change. The algorithm is based on the red/blue surface reflectance correlations and the lookup table method. To reduce the...
Network virtualization has been regarded as a core attribute of Future Internet. To improve the quality of virtual network, it is important to diagnose the faulty components quickly and accurately. Recently more and more researches focus on end-user fault diagnosis, which can fit incomplete knowledge and dynamic challenges. In this paper, we present a fault diagnosis system called DiaEO in virtual...
This paper introduces the SBE-19plus SEACAT profiler and points out the problems exist in its applications. To solve the problem of limited energy and to get CTD data real-time display with easy operation, the paper gives a brief design of remote power supplied CTD real-time monitoring system and its detailed software design. Finally, the paper gives the test result which proves that the system can...
The mechanism of power grid GIC is complex and has multiple factors. The geomagnetic activity is one of the main factors. In this paper, by using the wavelet neural network, a forecasting model for GIC caused by gradual commencement magnetic storm is introduced. The GIC data and geomagnetic data monitored during the magnetic storms are the basic data of the model. The GIC data collected in Ling'ao...
Network path loss rate is an important indicator of the network performance. Given a network with n end hosts, existing systems require O(n log n) measurements, and thus consume more management time and costs. An efficient network path loss rates inference method is proposed in this paper, which only needs to measure less part of paths to infer the loss rate of all remaining paths with higher accuracy,...
The application of structural health monitoring (SHM) based on fiber Bragg grating (FBG) for airships is investigated. In order to verify the validity of the FBG-based SHM in the field of airships, a qualitative strain monitoring experiment for ZHIYUAN-1 airship nosecone has been carried out. A commercial FBG interrogation system (Micron Optics sm130) is used in this experiment to measure the strain...
This paper presents a ubiquitous marketing environment using pervasive technologies to facilitate added-value services in lodging operations. The key is to integrate comprehensive technologies and ubiquitous marketing services, facilitating an added-value system, to provide and manage added-valued marketing services. Added-valued marketing services are studied regarding both website and Smartphone...
Using the water hyacinth to conduct the purification research, which simulates the urban river water, the experimental study discovery, compare the still water condition with the move water condition which the velocity of flow is 1.74cm/s, water hyacinth has slightly the superiority to DO, NH3-N, TN purifies at the move water condition, in the experimental process the DO average density respectively...
Based on the analysis of the influence of the vibration and noise of the running transformer on China's power grid, the monitoring technology is studied. With the use of computer technology, communications technology and network technology, a web-based on-line monitoring system for the vibration and noise of the transformer is developed. With SQL Server 2000 as the database, the system uses the Winsock...
In recent years the satellite monitoring capabilities in particular to derive maps of aerosol optical depth (AOD) have increased tremendously. There are many aerosol retrieval algorithms for different satellites and sensors. In 2005, a new algorithm for AOD retrieval by synergetic use of of Terra and Aqua MODIS data (SYNTAM) was proposed by Tang et al. With this algorithm, surface reflectance and...
As the key component of the ecosystems, vegetation is the main receptor of acid pollution. The present study aims to reveal influence of acid deposition on vegetations in subtropical China through comparison inter/inter-annual and seasonal variations of NDVI in 11 eco-regions between severe acid rain region (SR) and normal acid rain region (NR), based on the SPOT/VGT_10Day_NDVI and precipitation pH...
Consumers increasingly want to make informed and proactive decisions based on an understanding of their energy consumption. However, current energy monitoring solutions are either too limited in the information they provide or are too intrusive. We consider a solution for disaggregating the electrical power consumption of individual appliances connected in a residential electricity network, with a...
The geomagnetically-induced currents (GIC) on the power grid results from changes of geomagnetic field caused by solar activity, which is the significant problem and needs to be monitored to provide data for disaster analysis. In this paper, we combine with computer networks and communication technologies; develop the Web-based monitoring system for geomagnetically-induced current. The system's background...
In order to conduct effectively data mining to the abnormal data in the mass tax data to get decision rules of tax information system, a decision rules mining algorithm based on positive approximation is proposed, which is based on the traditional rough set theory and the decision-making table of coordination. A practice applied in tax monitoring table in a tax department is validated, which shows...
An IA-RWA computation with QoT compensation based on double Cooperating PCEs is presented and extended AMSON testbed is verified. Two kinds of IA-RWA computation with QoT compensation strategies including Cooperating PCEs based and RSVP based strategies are demonstrated and compared.
On Oct. 28th, 2009, a heavy fog hit East China. From the MODIS RGB composite image, it can be seen clearly that, much of land of the area (110°-123°E, 30°-42°N) was covered by the heavy fog or cloud. Using MODIS multi-satellite algorithm for aerosol optical depth (AOD) retrieval, we get the AOD Map at 470, 550 and 660 nm from MODIS data at 1km × 1km resolution. By Validating with the AERONET data,...
The domestic interior water body was monitored Based on an HJ-1 satellite multi-spectrum data. Chlorophyll a density is inverted from the empirical model based on the different area and different season. Suspension density inversion is based on the photobiology model of near-infrared waveband method. Based on chlorophyll a and the suspension density, the interior water body trophic level index is...
This paper describes a case study of satellite data integrated with HYSPLIT forward-trajectory model to forecast air quality in regional scale. During mid-October 2009, a severe haze event occurs in eastern China. With the help of HYSPLIT Trajectory Model, a 24-hr, 48-hr and 72-hr forward trajectory from three regions with high aerosol optical depth (AOD) values were created. Forward trajectories...
The variability of pulse wave was found and discussed recently. The cross-correlation of variability of the parameters of pulse wave was studied in this paper. We found that the variability of the features in time was closely related. However, the variability of the features in time had little correlation with that of the amplitude features of pulse wave. The complexity of the variability of these...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.