Jiaying University is a public provincial undergraduate university based in Meizhou City in Guangdong Province, southern China.The university grew out of the Women's Normal School established in 1913 and received its name because Meizhou was known as Jiaying during the Qing Dynasty . Wikipedia.
Huang K.-K.,Jiaying University |
Dai D.-Q.,Sun Yat Sen University
IEEE Transactions on Geoscience and Remote Sensing | Year: 2012
Remote sensing images offer a large amount of information but require on-board compression because of the storage and transmission constraints of on-board equipment. JPEG2000 is too complex to become a recommended standard for the mission, and CCSDS-IDC fixes most of the parameters and only provides quality scalability. In this paper, we present a new, low-complexity, low-memory, and efficient embedded wavelet image codec for on-board compression. First, we propose the binary tree as a novel and robust way of coding remote sensing image in wavelet domain. Second, we develop an adaptive scanning order to traverse the binary tree level by level from the bottom to the top, so that better performance and visual effect are attained. Last, the proposed method is processed with a scan-based mode, which significantly reduces the memory requirement. The proposed method is very fast because it does not use any entropy coding and rate-distortion optimization, while it provides quality, position, and resolution scalability. Being less complex, it is very easy to implement in hardware and very suitable for on-board compression. Experimental results show that the proposed method can significantly improve peak signal-to-noise ratio compared with SPIHT without arithmetic coding and scan-based CCSDS-IDC, and is similar to scan-based JPEG2000. © 1980-2012 IEEE.
Tang C.-B.,Jiaying University
Acta Crystallographica Section E: Structure Reports Online | Year: 2010
The title hydrazone compound, C15H14N 2O2, was prepared by the condensation of 4-hy-droxy-benzaldehyde with 2-methyl-benzohydrazide in methanol. The dihedral angle between the two benzene rings is 42.3 (2)°. In the crystal structure, molecules are linked by inter-molecular O - H⋯O, O - H⋯N and N - H⋯O hydrogen bonds, forming a three-dimensional framework.
Tang C.-B.,Jiaying University
Acta Crystallographica Section E: Structure Reports Online | Year: 2011
In the title compound, C15H15N3O, the dihedral angle between the pyridine and benzene rings is 36.3 (2)°. In the crystal, molecules are linked through intermolecular N -H⋯O hydrogen bonds, forming chains along the b axis.
Liang W.Y.,Jiaying University
Applied Mechanics and Materials | Year: 2014
Flash is an electronic animation that can be watched on a computer or monitor with a microprocessor. It is rich in content and can simultaneously display images, sound and text, its data is very few, generally speaking, the amount of data of an animated video accounts for 1/ 4 to 1/ 10 of a physical video with the same size and definition. Its development brings opportunities for modern educational technology curriculum of higher normal university, making it present a more rich content and form. The relevant overviews of online virtual laboratory are first discussed in this paper, and then is its construction process. © (2014) Trans Tech Publications, Switzerland.
Li S.,Jiaying University
Luminescence | Year: 2012
A new Eu(III) complex, Eu(III)(DBM) 3BIOQ, has been synthesized with dibenzoylmethane (DBM) as the first ligand and 2-(benzimidazol-2-yl)-8- octyloxyquinoline (BIOQ) as the second ligand. The stability of the complex was analysed by DSC-TG. The results show that the Eu(III) complex has a relatively high thermal stability with a melting point of 235 °C and a decomposition temperature (onset) of 252 °C. The fluorescence properties of the compound were also investigated. The fluorescence results reveal that the as-prepared complex shows the characteristic maximum emission spectra of Eu(III) at 611 nm (® ex = 350 nm). In addition, the photoluminescence spectrum of the complex in the solid state exhibits a single and symmetrical emission band at 611 nm, with a full width at half-maximum of 4.7 nm, showing high colour purity. This finding indicates the possibility for the development of brighter red luminescent materials. Copyright © 2011 John Wiley & Sons, Ltd.
Zhong Q.-H.,Jiaying University
European Physical Journal B | Year: 2010
We have presented a theoretical calculation of the differential cross section (DCS) for the electron Raman scattering (ERS) process associated with the surface optical (SO) phonon modes in semiconductor quantum dots (QDs). We consider the Fröhlich electron-phonon interaction in the framework of the dielectric continuum approach. Different scattering configurations are discussed and the selection rules for the processes are also studied. Singularities are found to be sensitively size-dependent and by varying the size of the QDs, it is possible to control the frequency shift in the Raman spectra. A discussion of the phonon behavior for QDs with large and small size is presented. The numerical results are also compared with that of experiments. © 2010 EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg.
Zhong X.-Y.,Jiaying University
Procedia Engineering | Year: 2011
Weka is a data mining platform based on Java with open source code, which gathers many machine learning algorithms to mine data, including data pretreatment, classification, cluster class, association rule mining and visual interactive page. The server will record massive web log files when user visits the website, each item of the files records related information of visitor, such as the time, IP address, action, request pages as well as the state and so on. The system mines web log on weka platform, it obtains the custom of different user to visit the website by processing and analyzing primary data, and mines unusual information, and provides the reference for the policy decision and construction of website. Simulation results show that, applying weka in web log mining, will obtain frequent model which user visits the website, optimize the website structure, and make convenient to build intelligence website. © 2011 Published by Elsevier Ltd.
Xu H.,Jiaying University
Protein and Peptide Letters | Year: 2010
Flavonoids, also called vitamin P, are widely distributed in plants fulfilling many functions. Yeast α- glucosidase (YAGH; EC 22.214.171.124), as extensively used target protein for screening bioactive compounds from medicine plants, was selected to explore the possible mechanisms of multiple biological function of flavonoids. The results in this study indicated that flavonoids, as mixed-type inhibitors, quenched the intrinsic fluorescence of YAGH by a mixed fluorescence quenching mechanism. The interaction information between flavonoids and YAGH was analyzed using a flexible docking method (AutoDock) and showed that 3', 4' dihydroxyl groups of B ring and 3-OH of C ring played a more important role in the inhibition activity than other hydroxyl groups, because the 3', 4' dihydroxyl groups of B ring directly interacted with the active-site residues of YAGH to inhibit enzyme activity and 3-OH of C ring seemed to be necessary to maintain the proper binding orientation of flavonoid molecules, thereby making the hydroxyl groups of B ring interact with active-site residues tightly in the hydrophobic pocket of YAGH. The results supply a basis for understanding the mechanisms of multiple biological functions of flavonoids. © 2010 Bentham Science Publishers Ltd.
Jiaying University | Date: 2015-11-21
The present invention relates to the technical field of -sitosterol drugs and provides a drug sustained release agent based on -sitosterol and a preparation method thereof. The drug sustained release agent based on the -sitosterol is applied to drugs with the -sitosterol as a main drug component and is prepared from the components including a drug carrier, a hydrophilic gel material, a erodible matrix material and an insoluble matrix material, wherein the drug carrier is a -cyclodextrin-polyamide-amine dendrimer composites, -sitosterol is from a plant raw material, and a host-guest inclusion complex is composed of the main drug component and the drug carrier according to the mass ratio of 0.1:0.1-0.1:5. A preparation method comprises the following steps: preparing the inclusion complex, mixing auxiliaries, carrying out compression moulding and the like. The drug sustained release agent based on -sitosterol has the characteristics of stable drug concentration, high biological activity, good drug solubility and long acting effect.
Jiaying University | Date: 2015-11-20
The present invention relates to the technical field of oleanolic acid drugs and provides a drug sustained release agent based on oleanolic acid and a preparation method thereof. The drug sustained release agent based on the oleanolic acid is applied to drugs with the oleanolic acid as a main drug component and is prepared from the components including a drug carrier, a hydrophilic gel material, a erodible matrix material and an insoluble matrix material, wherein the drug carrier is -cyclodextrin-chitosan composites, wherein the oleanolic acid is from a plant raw material, and a host-guest inclusion complex is composed of the main drug component and the drug carrier according to the mass ratio of 0.1:0.1-0.1:5. A preparation method comprises the following steps: preparing the inclusion complex, mixing auxiliaries, carrying out compression moulding and the like. The drug sustained release agent based on oleanolic acid has the characteristics of stable drug concentration, high biological activity, good drug solubility and long acting effect.