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Wireless Capsule Endoscopy (WCE) is a novel revolutionary medical technology obtaining visual information of the entire gastrointestinal, especially the small intestine. However, reviewing a WCE video is a highly time-consuming assignment for the doctors. Focused on the salient region of the WCE images, this paper has proposed a new method to obtain the video abstract. The most representative frames...
The 3D facial surface demonstrates rich information about human beings' expressions. However, methods to recognize humans' facial expression are mainly still focusing on 2D images, which is not robust to pose and lighting conditions. In this paper, the problem of the person-independent facial expression recognition is addressed on basis of the line segments connected by specific 3D automatically detected...
This paper studies the method of extracting two-dimensional terrain profile of the earth great circle from the Shuttle Radar Topography Mission (SRTM) data for the arbitrary wave propagation path, uses the bilinear interpolation method to obtain the elevation value of the arbitrary location on the terrain profile, and compares the result with the result of the GIS software to verify the correctness...
Non-uniform mesh technology of parabolic equation method is introduced to solve the radio wave propagation problems in forest more efficiently. The simulation errors of radio wave propagation in forest with different uniform grids are analyzed first. The results indicate that fine grid in forest area is necessary to ensure the simulation accuracy. As typical scenes for simulation are usually forest...
In this paper, power coverage characteristic and multipath diversity scheme for downlink simulcast distributed antenna system (DAS) are investigated based on a wideband channel measurement at 6 GHz for indoor scenario. With measured path loss (PL), power coverage property is analyzed. Compared with centralized antenna system (CAS), DAS can introduce 5–17 dB PL gain, and achieve a higher coverage ratio...
The performances of various antenna configurations are compared from a capacity point of view for the high-speed railway MIMO system. The standard IMT-Advanced (IMT-A) channel model proposed by International Telecommunication Union (ITU) is adopted in the capacity analysis. The results show that the MIMO capacity increases with the element number and spacing of the antenna array. It is also illustrated...
Distributed antenna system (DAS) is a very promising technology to enhance the capacity of indoor communication system due to the inherent macro and micro diversity. With its natural characteristics of reducing the access distance and increasing the probability of line-of-sight (LoS) coverage, DAS can greatly enhance the power efficiency, which is in accordance with the goal of green communication...
Affecting factors of biosorption of MoO42− by Pseudomonas Pseudoalcaligenes were studied, influences of biosorption by pH, temperature, coexisting metal ions and additional glucose were tested. The test results showed that the best pH for biosorption was 7, the best temperature for biosorption was 30°C∼50°C, the balance time of biosorption was 40∼60min. Influence by coexisting metal ions was significant...
Femtocell, as a new emerging deployment scenario for next generation mobile wireless communication systems, has attracted more and more attention recently for providing sufficient indoor coverage and stable backhaul link. The interference problem is publicly known as a key for femtocells to be widely deployed. So lots of standardizing bodies and research groups are dedicated to the interference study...
Coordinated multi-points (CoMP) transmission has been widely proved to be effective to combat co-channel interference by a number of theoretical literatures. However, a common assumption is made that the optical fiber required by coordination between base stations (BSs) is always ready to be used which is quite impractical in the real world. Therefore, Intra-Site CoMP, which only involves coordination...
ITO/AZO double films were deposited by RF sputtering on p-Si(lOO) substrate to fabricate ITO/AZO/SiCVp-Si SIS heterojunction. The structural, optics and electrical properties of the ITO/AZO films were characterized by UV-VIS spectrophotometer, four point probe and Hall effect measurement, respectively. The results show that ITO/AZO films have good quality. The electrical junction properties were investigated...
A novel ITO/SiO2/np Silicon SINP violet and blue enhanced photovoltaic device has been fabricated by thermal diffusion of phosphorus for shallow junction to enhance the spectral responsivity within the wavelength range of 400-600 nm, low temperature thermally grown an ultrathin silicon dioxide and RF sputtering ITO antireflection coating to reduce the reflected light and enhance the sensitivity. The...
Adding a certain concentration of Pb2+ to the culture medium. Two strong lead-resistant strains of microorganisms labeled as J13 and Y7, were selected from six soil samples, J13 and Y7 belongs to Erwinia sp. and Bacillus respectively through preliminary identification. J13 and Y7 were inoculated into culture medium which added with PbCO3 and carried out activation test of lead in precipitation fraction...
ITO/AZO double films were deposited by RF sputtering on p-Si texturized substrate to fabricate ITO/AZO/SiO2/p-Si SIS heterojunction. The structural, optics and electrical properties of the ITO/AZO films were characterized by UV-VIS spectrophotometer, four point probe, respectively. The results show that ITO/AZO films have good quality. The electrical junction properties were investigated by I-V measurement,...
Short-term load forecasting may impact the plan of the production of the electricity system and the arrangement of the power system short-term operation mode, and it has great economic significance. Some scholars used BP neural network to forecast the short-term load, and they found it has the intrinsic defects. Itpsilas difficult to determine the network structure and it easily run into partial minimum...
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