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Aerodynamic roughness length (z0) is one of those important biophysical parameters, which influence energy exchange at the land-atmosphere interface, so it is significant to quantify the z0 accurately. In this paper, a scheme parameterizing land-surface z0 at regional scale has been approached based on multi-resource remote sensing data, including LiDAR and optical remote sensing. Firstly, we retrieved...
A 76–108MHz FM Transmitter emits 120dBμVrms output signal using an embedded antenna on a PCB. A proposed on-chip calibration scheme digitally tunes an on-chip capacitor array to centre the embedded antenna resonance circuit with an external inductor at the desired FM channel. The transmitter achieves a 60dB audio SINAD, better than −45dB LO leakage and −50dB sideband suppression with −30/−55dB ACLR...
In recent years, the increasing popularity of mobile devices, such as smart-phones and tablets, is driving the demand for integrating multiple radios on a single SoC to reduce cost, form factor and external BOM [1]. These devices require ubiquitous wireless connectivity, which means concurrent operation with different radios. While concurrent operation of multiple radios brings excellent user experiences,...
Selecting Sichuan Province as the study area, setting rainfall-induced shallow landslide hazard for the research objectives, choosing slope, fault zone, rivers, lithology, soil type and vegetation as the main evaluation factors of the environmental vulnerability assessment. Based on the landslides disaster database since 5.12 Earthquake in Sichuan Province, the weights of the evaluation factors are...
Typhoon is one of the worst natural disasters in the world. Sustainable development of the social and economic of our country is restricted by the effect of Typhoon. High-intensity rainfall brought by Typhoon is an important factor in the formation of disaster. There are two factors, the hazard of the Typhoon disaster control factors and the vulnerability of the regions Typhoon disaster happened,...
Regional precipitation-induced landslide is one of the major geologic hazards in our country, which features large areas of damage, simultaneity, sudden breakout and serious consequences. Especially in Sichuan province where has happened earthquake, tectonic changed, secondary disasters happened very frequently. It is essential to carry out the research into the forecast and early warning of precipitation-induced...
The Ms 8.0 Wenchuan earthquake, occurred on 12 May 2008 in Sichuan Province, caused enormous property damages and human casualties. In order to remove threat from the secondary landslides effectively, this study used techniques of remote sensing and GIS to generate susceptibility map, taking the case of Wenchuan County. The factors controlling landslides are obtained from geological maps and DEM,...
The 0908 typhoon “Morakot” heavily attacked Taiwan. It brought strong rainfall which not only caused water level rise in several reservoirs and rivers, but also triggered a large number of landslides, debris flow, collapse and other geological disasters. In this paper, using NDVI(Normal Differential Vegetation Index) subtractive method, together with band combination symbol coding method, “Morakot”...
The structure of customer communication network provides us the insights into the function of customers' relationships. In this paper, we use egocentric social network to explore how people manage their personal and group communications over time. Our primary goal is that our findings can provide business insights and help devise strategies for telecom service providers. We are interested in tracking...
The paper use the EOS-MODIS land surface temperature production (LST) to study the temporal and spatial thermal environment distribution of Bejing-capital zone, and Urban Heat island (UHI) intensity in the ten cities in the region were also studied by LST corrected by topography characteristic. In order to find the driving factors of UHI, the relationship between urban Land cover, NDVI and LST are...
The paper focused on spatial and temporal distribution of thermal environment by Land Surface Temperature(LST) and brightness temperature retrieved from ASTER and Landsat TM/ETM in Beijing-capital zone, and analyzing scale effect of multi-resolution LST data (LST retrieved by ASTER and MODIS LST product)with the variety of landuse and NDVI. The result showed that the UHI phenomena had increasing tendency...
In the mobile call mini challenge of VAST 2008 contest, we explored the temporal communication patterns of Catalano/Vidro social network which is reflected in the mobile call data. We focus on detecting the hierarchy of the social network and try to get the important actors in it. We present our tools and methods in this summary. By using the visual analytic approaches, we can find out not only the...
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