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With the extensive applications of Internet, the Internet data have grown at full speed. To directly reveal the relationship among mass data and the latent characteristics in information with visualization techniques has become an important research topic. Concerning small resource storage capacity and low data exchange efficiency of the traditionally visualization C/S system, this paper adopts the...
Snow cover is one of the most important components in predicting global water and influence the global heat budget. In this study, we reported the spatial and temporal distribution of seasonal wet snow cover derived from enhanced resolution (4.45 km/pix) QuikSCAT Ku band backscatter measurements in the winters of 2002–2009 of China. A threshold method was used to detect melt events. The main melt...
Snow water equivalent is a key parameter in hydrology and climatology. In this study, we estimates snow water equivalent based on bi-continuous vector radiative transfer (VRT) model at X (9.6 GHz) and Ku (17.2 GHz) bands radar scatter. First, the relationship between snow optical thickness and single scattering albedo at X and Ku bands is established by analyzing the database generated from bi-continuous...
Estimate surface air temperature (Ta) accurately in fine scale is very necessary for hydrological simulation, especial in glacierized basins. The purpose of this paper is to present a framework to mapping the Ta using multi-source remote sensing data and reanalysis dataset. The main content includes two parts: (a) filling the gaps in remotely sensed land surface temperature (LST) using spatial-temporal...
In this work, the inverse spin Hall effect was separated from the spin rectification effect by two methods. One is originated from that the inverse spin Hall effect which is an odd function of the spin injection direction while the spin rectification effect is independent on it. The second method is based on the relation between the direction of static magnetic field and the symmetric and anti-symmetric...
This paper describes the new applications of simulated annealing (SA) algorithm to three different domains: (1) design and modification of district heating pipe-networks, (2) sizing of the branch based CMOS (Complementary Metal-Oxide-Semiconductor) digital circuits, and (3) design of finite wordlength, parallel-structured filter banks. In each application, the appropriate cost function is described...
TRPV5 and TRPV6 are unique members of the TRP super family. They are highly selective for Ca2+ ions with multiple layers of Ca2+-dependent inactivation mechanisms, expressed at the apical membrane of Ca2+ transporting epithelia, and robustly responsive to 1,25-dihydroxivitamin D3. These features are well suited for their roles as Ca2+ entry channels in the first step of transcellular Ca2+ transport...
L-band radiometry is a promising pathway for soil moisture estimation at global scale. An observation system simulation experiment was conducted for LEWIS over the SMOSREX bare soil site in 2006 through coupling the Variable Infiltration Capacity(VIC) land surface model and a Multi-Option L-band Microwave Emission Model(MOLMEM) in this study. Impacts from different dielectric constant models and roughness...
LVDS (low-voltage differential signaling) technology provides an attractive solution for fast data transmission which has low power consumption. An enhanced LVDS transmission protocol is developed in this paper for reliable high-speed board-to-board LVDS data transmission in rail flaw ultrasonic testing system. The protocol, which is based on 8B/10B encoding and dynamic time-delay adjustment, avoids...
A large amount of data is produced in the process of ultrasonic testing of rail, and it's necessary to compress the raw data with a loss-less compression algorithm. This paper analyses statistical characteristics of ultrasonic test data of rail, and makes researches on the commonly used loss-less compression algorithm, Huffman compression algorithm and LZW compression algorithm. In order to improve...
The Microgrid voltage may deviate from the grid voltage when it operates in islanded mode, which will result in unexpected large inrush currents during the re-connection process. This paper proposed a new self-synchronization control strategy for synchronverter with local loads which utilizes the reference phase angle of synchronverter as the reference angle in the rotating frame. A compensation quantity...
The Tibetan culture is one of the most unique religious in the world, and it has deeply influenced the Chinese culture in many ways. What's more, the Tibetan area in Yunnan Province is important for the world, not only in the nomadic culture, but also in religious culture and Chinese history. With the aid of the current advanced technology, especially the Geographic Information System (GIS) and Virtual...
In order to monitor and predict Dianchi cyanobacterial blooms in different time scales, the system was studied based on the multi-function wireless sensor network technology and geographic information systems. The gray theory and BP artificial neural network were combined to achieve dynamic forecasting and prediction of water quality; temporal and spatial expression using GIS technology to display...
In this paper the virtual synchronization control strategy is applied to MMC based VSC-HVDC system to improve the performances of stable state and dynamic state. The small signal model of the virtual synchronization controller is built to show the performance when the system is subjected to small interferes. Then the characteristics of the system in different operation state are analyzed. As the virtual...
Application which combines intelligent terminals based on Android platform with sensor network is developing faster and faster. In order to achieve the Android terminal's controlling hardware sensors through wireless net, the subject realizes a USB Accessory Mode + ZigBee data communication mode by the way of research, comparison and scientific experiment of combining Android platform with wireless...
With the wide use of video-editing software, more and more similar videos are uploaded to the video-sharing platforms in cloud storage. The large number of near-duplicate videos would not only make the users not satisfactory, but also consume more resources with service providers. Since the near-duplicate videos have redundancy at the content level, the traditional de-duplication technology is not...
This essay studies the inner connection among the mechanical evacuation system, mechanical air supply system and natural air supply system in the Large indoor stadium via CFD numerical simulation. The influence on the smoke evacuation system by the different air supply methods is also discussed. That will provide theoretic foundation to design of smoke evacuation system and air supply system.
Validation is important for any satellite-based remote sensing products. In this paper, in situ soil moisture observations from 38 stations over the 1 °×1 ° domain from the central Tibetan Plateau Soil Moisture/Temperature Monitoring Network (CTP-SMTMN) and 152 stations from the Soil Climate Analysis Network (SCAN) over continental U.S. are used to determine the reliability of Aquarius level-2 soil...
Changes of LUCC have a significant impact on runoff by altering surface evaporation, soil moisture conditions, and the amount of trapped ground cover, which directly impact the sustainable development of the watershed ecology. In this paper, based on remote sensing images, we simulate the runoff of land-use changes of differing slopes using GIS technology and SWAT model in Erhai basin. The results...
Satellite based High Resolution Precipitation Product (HRPP) (generally with a temporal resolution of 3h and spatial resolution of 0.25°×0.25°) is a valuable data source in global and regional hydroclimatologic applications. However uncertainty information for most of the satellite-based HRPPs is unavailable up to present. This paper presents a statistical evaluation study of daily TMPA research time...
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