Jingchu University of Technology

www.jcut.edu.cn
Shayang, China
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Qi C.,Jingchu University of Technology
Proceedings - 2016 International Conference on Smart City and Systems Engineering, ICSCSE 2016 | Year: 2016

English writing teaching process design directly affect the students' writing level upgrade, this paper presents a dynamic assessment of the English writing teaching mode, in order to verify the superiority of the teaching mode, the design of the teaching experiment based on the experimental class and the control class of different teaching modes, using the social science statistical software of SPSS and statistical theory and empirical based on dynamic assessment of English teaching. The empirical results show that the dynamic assessment model has a good effect on the teaching of English writing, and value of promoting. © 2016 IEEE.


Zhao J.,Jingchu University of Technology
Electronics, Communications and Networks IV - Proceedings of the 4th International Conference on Electronics, Communications and Networks, CECNet2014 | Year: 2015

In designing a blind equalizer based on Backward Propagation (BP) neural networks, the choice of the error function is fundamental to parameters that are updated online. Therefore, after some research on the properties of cost functions, this paper proposed a way to replace the error function of BP neural networks with cost functions, and the property of the equalizer based on BP neural networks with different p values of the constant modulus algorithm CMA (p, 2) were simulated. Decision-Direct algorithm (DD), hyperbolic tangent error, and the stop-and-go (SAG) algorithm and their combinations or revisions with the CMA were studied. Results showed that when p =2, the CMA transferred a moderate value to update the parameters which leads to lower byte-error-rates (BERs) and good convergence trends. The combinations of CMA (2, 2) with the other three algorithms raised the behavior of the blind equalizer, while the HSCMA+CMA (2, 2) algorithm performed the best on the whole. © 2015 Taylor & Francis Group, London.


Tao Y.,Jingchu University of Technology
Electronics, Communications and Networks IV - Proceedings of the 4th International Conference on Electronics, Communications and Networks, CECNet2014 | Year: 2015

As a new generation of Internet protocol, IP v6 has solved, to some extent, the problem that the number of IP v4 addresses would be consumed soon. The IP v6 protocol enhances the support for network security and uses, in a compulsory manner, the IP Sec protocol to implement the security functions including authentication and encryption. This paper introduces the deployment of IP Sec using OpenSWAN according to the topological structure of IP v6 campus network. © 2015 Taylor & Francis Group, London.


Wan W.,Jingchu University of Technology
Procedia Engineering | Year: 2017

This paper considers an inverse mixed eigenvalue problem for a damped spring-mass system. The problem of reconstructing the vibration system from its partial physical parameters, complex mode and a real mode of the corresponding undamped system is considered. By solving a kind of quadratic inverse eigenvalue problems, the necessary and sufficient condition for the solvability of the problem is obtained, and a numerical method for solving the problem is proposed. The numerical example shows feasibility of the method. © 2017 The Authors. Published by Elsevier Ltd.


Hu Y.,Jingchu University of Technology | Lai Y.,Jingchu University of Technology
Plant Physiology and Biochemistry | Year: 2015

Histones, acting as the core of nucleosome, are the chief protein component of chromatin. They play an important role in gene regulation by covalent modification at several sites and histone variants replacement. Five major families of histones exist: H1, H2A, H2B, H3 and H4. The protein sequences within each family appear to be highly conserved. In this paper, we identified 60 histone proteins in rice (Oryza sativa) including 14 H2A, 15 H2B, 16 H3, 11 H4 and 4 H1. Sequence analysis indicates that histone protein sequences in plant are more variable than in animal. Interestingly, we found a rice-specific H4 variant which showed several amino acid substitutions with canonical protein and was expressed in different tissues in a low level. Expression analysis indicates that a subset of histone genes were expressed in a similar pattern and many of them responded to stress conditions. Specifically, we found that two H2A.Z genes were down-regulated by stress in leaves but not in roots suggesting that they might be involved in stress response. © 2014 Elsevier Masson SAS.


Jin N.-Y.,Jingchu University of Technology
Journal of Coordination Chemistry | Year: 2012

Two new dioxomolybdenum(VI) complexes, [MoO2L 1(CH3OH)] (1) and [MoO2L2(H 2O)] (2), where L1 and L2 are dianionic form of N′-(2-hydroxy- 3-methoxybenzylidene)-4methoxybenzohydrazide and N′-(2-hydroxy- 3methoxybenzylidene)-2-hydroxybenzohydrazide, respectively, have been synthesized and structurally characterized by spectroscopic methods and singlecrystal X-ray determination. The complexes are mononuclear molybdenum(VI) compounds. Mo in each complex is octahedral. The difference in the substituent groups in the benzohydrazides leads to coordination of different solvent molecules. Crystals of the complexes are stabilized by hydrogen bonds. The complexes are effective catalysts for sulfoxidation. © 2012 Taylor & Francis.


Li A.-M.,Jingchu University of Technology
Journal of Coordination Chemistry | Year: 2014

Two new structurally similar molybdenum(VI) complexes, [MoO 2L1(CH3OH)] (1) and [MoO2L 2(CH3OH)] (2), where L1 is the dianionic form of N′-(2-hydroxy-5-nitrobenzylidene)-2-methylbenzohydrazide and L 2 is the dianionic form of N′-(2-hydroxy-4-methoxybenzylidene)- 2-methylbenzohydrazide, were prepared and structurally characterized by elemental analysis, infrared spectra, and single-crystal X-ray diffraction. 1 crystallizes in the monoclinic space group P21/c, with unit cell dimensions a = 7.941(1), b = 14.337(2), c = 15.141(2) Å, β = 92.782(2)°, V = 1721.8(4) Å3, Z = 4, R1 = 0.0286, wR2 = 0.0650, GOOF = 1.028. 2 crystallizes in the triclinic space group P-1, with unit cell dimensions a = 8.003(1), b = 10.608(1), c = 10.880(1) Å, α = 95.745(2)°, β = 97.627(2)°, γ = 105.762(2)°, V = 872.0(2) Å3, Z = 2, R1 = 0.0226, wR2 = 0.0595, GOOF = 1.116. X-ray analysis indicates that Mo in the complexes are coordinated by the phenolate oxygen, imino nitrogen, and enolate oxygen of the benzohydrazone, methanol, and two oxo groups, generating octahedral coordination. The oxidation of olefins with the complexes as catalysts was evaluated, indicating that the complexes showed excellent catalytic efficiency in oxidation of most aliphatic and aromatic substrates under mild conditions using tert-butyl hydrogen peroxide as oxidant. © 2014 © 2014 Taylor & Francis.


Li A.-M.,Jingchu University of Technology
Journal of Coordination Chemistry | Year: 2014

Two structurally similar vanadium(V) complexes, [VOL1L] (1) and [VOL2L] (2), where L1 is the dianionic form of N'-(3,5-dibromo-2-hydroxybenzylidene)-4-methoxybenzohydrazide, L2 is the dianionic form of N'-(3,5-dibromo-2-hydroxybenzylidene)nicotinohydrazide, and L is benzohydroxamate, were prepared and characterized by elemental analysis, infrared spectra, and single crystal X-ray diffraction. 1 crystallizes in the monoclinic space group P21/c, with unit cell dimensions a = 12.0262(7), b = 16.5629(9), c = 12.3449(8) Å, β = 105.160(2)°, V = 2373.4(2) Å3, Z = 4, R1 = 0.0376, wR2 = 0.0844, GOOF = 1.058; 2 crystallizes in the monoclinic space group P2 1/c, with unit cell dimensions a = 10.6439(7), b = 16.1968(9), c = 13.1108(8) Å, β = 104.180(2)°, V = 2191.4(2) Å3, Z = 4, R1 = 0.0521, wR2 = 0.1142, GOOF = 1.018. X-ray analysis indicates that vanadium in the complexes are coordinated by phenolate oxygen, imino nitrogen, and enolate oxygen of the hydrazone, two oxygens of the benzohydroxamate, and one oxo, generating octahedral coordination. Oxidations of olefins with the complexes as catalysts were evaluated. The complexes showed effective catalytic efficiency in oxidation of several aliphatic and aromatic substrates under mild conditions, using tert-butyl hydrogen peroxide as oxidant. © 2014 © 2014 Taylor & Francis.


Zhang H.-X.,Jingchu University of Technology | Liu Y.,Jingchu University of Technology
Steroids | Year: 2014

Introducing amide bonds into a steroid nucleus or its side chain may reduce the acute toxicity and enhance the pharmaceutical activity. In this work, a designed steroidal amide compound, named 3β-hydroxy-17-aza-d-homo-5- androsten-17-one (HAAO), was synthesized and identified. The interactions between HAAO and human serum albumin (HSA) were studied by multiple spectroscopic methods and molecular modeling procedures. It was found that HAAO locates in Sudlow's site I in subdomain IIA of HSA molecules, relying on hydrogen bonds and van der Waals power to form HAAO-HSA complexes at ground state. The number of binding sites, binding constants, enthalpy change (ΔHθ), Gibbs free energy change (ΔG θ) and entropy change (ΔSθ) were calculated at different temperatures based on fluorescence quenching theory and classical thermodynamic equation. The percentages content of the HSA's secondary structures in presence of HAAO were detected by circular dichroism (CD) spectra and compared with those in no presence of HAAO. In addition, the experimental results of both binding site and conformational change were further confirmed by molecular modeling investigation, in which more details of the binding were visually unfolded. The information provided by the study may be useful for designing novel chemotherapeutic drugs and be helpful both in the early stages of drug discovery and in clinical practice. © 2013 Elsevier Ltd. All rights reserved.


He X.-Q.,Jingchu University of Technology
Journal of Coordination Chemistry | Year: 2013

Two new dioxomolybdenum(VI) complexes, [MoO2L 1(CH30H)]CH30H (1) and [MoO2L 2(CH30H)] (2), where L1 and L2 are dianionic forms of N'-(3-bromo-2-hydroxybenzylidene)-4-hydroxybenzohydrazide and N'-(2-hydroxybenzylidene)-2-hydroxy-3-methylbenzohydrazide, respectively, have been synthesized. The complexes have been characterized by elemental analyzes, IR spectra, molar conductance data, and single crystal X-ray determination. Mo in each complex is octahedral. The crystals of the complexes are stabilized by hydrogen bonds and weak π π stacking interactions. The complexes function as effective olefin epoxidation catalysts with hydrogen peroxide as oxidant and sodium hydrogen carbonate as a co-catalyst at room temperature. © 2013 Taylor and Francis.

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