Chuanjun Xia

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The traditional centralized load balancing had a relatively low reliability, and the distributed load balancing had a huge overhead. To solve these problems, this paper mapped heterogeneous wireless networks to distributed grids by introducing Resource Management Unit, and then presented a hierarchical semi-centralized architecture for load balancing of(More)
Single-mode fibres with low loss and a large transmission bandwidth are a key enabler for long-haul high-speed optical communication and form the backbone of our information-driven society. However, we are on the verge of reaching the fundamental limit of single-mode fibre transmission capacity. Therefore, a new means to increase the transmission capacity(More)
The electropolymerization and doping/dedoping properties of polyaniline ultrathin films on Au electrode surfaces were investigated by a combination of in situ electrochemical techniques, i.e., electrochemical surface plasmon spectroscopy (ESPR) and the electrochemical quartz crystal microbalance (EQCM). In the ESPR measurements, we employed two wavelengths,(More)
Residues of hexachlorohexanes isomers (HCHs) and dichlorodiphenyltrichloroethane and metabolites (DDTs) in the soils and sediments of Dayanghan Wetland in Wuhu, China were investigated. The concentrations of ΣHCH in soils and sediments averaged 1.35 and 3.77 μg/kg with the predominance of β-HCH and δ-HCH, respectively. The concentrations of ΣDDT in soils(More)
We report the synthesis and characterization of dendritic thiophene derivatives with their unique supramolecular assembly into 2-D crystals, nanowires, and nanoparticle aggregates. The structure and size of the dendrons and dendrimers have been confirmed with various techniques, such as NMR, SEC, and MALDI-TOF-MS. The mass values were consistent with the(More)
Various free radical surface initiated polymerization (SIP) conditions were investigated on clay nanoparticles coated with monocationic 2,2'-azobisisobutyronitrile (AIBN) type free radical initiators. Interesting differences in the mechanism of polymer nanocomposite product formation and the role of nanoparticle surface bound AIBN initiators were observed(More)
Optical buffering is known to significantly improve the performance of optical packet and burst switched networks and a number of useful analytic models for the case of Poisson traffic have been proposed previously. In this paper, we propose an approximate analytic model for generally distributed arrivals, specifically treating Gammadistributed interarrival(More)
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