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The development of location-based social networks (LBSNs) has brought in massive users' mobility data, providing an unprecedented opportunity to study human mobile behavior. However, the existing location prediction methods suffer from incompleteness of mobility data and disability of selecting the effective feature. To better understand and describe mobile behavior, users' multi-features are induced...
As a new structure, reflecting gratings based on two-dimensional (2-D) piezoelectric phononic crystals (PCs) have been studied for several years. This paper has proposed an approach to analyze the reflectivity of this reflecting grating in two directions. In the method, resonant modal was firstly analyzed with three-dimensional (3-D) finite element method (FEM) using the commercial software COMSOL...
A three-dimensional (3D) finite element method (FEM) model was proposed to analyze the resonant modal of the transducers based on two-dimensional (2D) phononic crystals (PnCs). Using this model two modals existed with symmetric modal and anti-symmetric modal can be extracted, and then reflectivity of the transducers was derived. An example of transducer based on 2D PnCs composed of IDTs of aluminum...
Various application scenarios with multi-services are rising to prominence in Intelligent Transportation Systems (ITS). To better optimize ITS based-on Wideband Code Division Multiple Access (WCDMA) networks, the soft handover management is an indispensable technology. In this paper, a dual handover prioritization (DHP) scheme which is composed of two layers prioritization design is proposed to guarantee...
Machine-to-Machine (M2M) communication is rising to prominence in wireless networks. Besides the research hotspot on the random access (RA) overload solution, the energy consumption (EC) problem of massive synchronized machine type communications (MTC) devices should also be considered urgently. In this paper, a joint energy-saving mechanism is proposed for M2M communication, which composed of overload...
Ethyl acetate (EtAc) is mainly used as solvent in paints and coatings industry, inks production and as industrial solvent in many other branches of industry. Esterification of acetic acid with ethanol may be performed to synthesize ethyl acetate. In this paper, a reactive distillation (RD) column with packing cation exchange resins as a catalyst is applied. Mathematical models of reactive distillation...
Long-term evolution (LTE) of the UMTS terrestrial radio access and radio access network is considered to ensure the competitiveness of 3GPP radio-access technology in a longer time frame. To minimize/optimize the user equipment (UE) power consumption, and further to support various services and large amount of data transmissions, a discontinuous reception (DRX) mechanism with adjustable DRX cycles...
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