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Cascading failures in local-world evolving networks

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第10期9卷 1336-1340页

作者： Zhe-jing BAO yi-jia CAO School of Electrical Engineering Zhejiang University Hangzhou 310027 China College of Electrical and Information Engineering Hunan University Changsha 410082 China

The local-world (LW) evolving network model shows a transition for the degree distribution between the exponential and power-law distributions, depending on the LW size. Cascading failures under intentional attacks in LW network models with different LW sizes were investigated using the cascading failures load model. We found that the LW size has a significant impact on the network's robustness against deliberate attacks. It is much easier to trigger cascading failures in LW evolving networks with a larger LW size. Therefore, to avoid cascading failures in real networks with local preferential attachment such as the Internet, the World Trade Web and the multi-agent system, the LW size should be as small as possible.

关键词： Complex network Local world (LW) Cascading failures Power-law Attack

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Audio Perceptual Hashing Based on NMF and MDCT Coefficients

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Chinese Journal of Electronics 2015年第3期24卷 579-583页

作者： LI Jinfeng WANG Hongxia jing yi School of Information and Science and Technology Southwest Jiaotong University College of Engineering Northeastern UniversityBoston

Audio perceptual hashing is a digest of audio contents, which is independent of content preserving manipulations, such as MP3 compression, amplitude scaling, noise addition, etc. It provides a fast and reliable tool for identification, retrieval, and authentication of audio signals. A new audio hashing scheme based on nonNegative matrix factorization(NMF) of Modified discrete cosine transform(MDCT) coefficients is proposed. MDCT coefficients, which have been widely used in audio coding,exhibit good discrimination for different audio contents and highly robustness against content preserving manipulations, especially MDCT based compression such as MP3,AAC, etc. Based on the extraction of MDCT coefficients of the audio frames firstly, NMF is used to construct hash bits. Experiment results demonstrate that, compared with methods mentioned in literature, the proposed scheme exhibits a high efficiency in terms of discrimination, perceptual robustness identification rate and time consumption.

关键词： Perceptual audio hashing Modified discrete cosine transform Non-negative matrix factorization Perceptual robustness

Phospholipase C gamma(PLCγ)regulates soluble trehalase in the 20E-induced fecundity of Apolygus lucorum

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Insect Science 2021年第2期28卷 430-444页

作者： Yong-An tan Xu-Dong Zhao Hou-Jun Sun jing Zhao Liu-Bin Xiao De-Jun Hao yi-Pin Jiang nstitute of Plant Protection Jiangsu Academy of Agricultural SciencesNanjingChina College of Forestry.Nanjing Forestry University NanjingChina Jiangsu Xuzhou Sweet Potato Research Center.Xuzhou Jiangsu ProvinceChina

Apolygus lucorum is the dominant pathogenic insect attacking Bacillus thuringiensis(Bt)cotton in ***,20-hydroxyecdysone(20E)has important functions in many biological processes,including insect *** C(PLC),which is an essential enzyme for phosphoinositide metabolism,is involved in 20E signal transduction,but its function in 20E-mediated reproduction in *** remains *** this study,20E increased A/PLCγ transcription as well as the abundance and activity of the encoded protein during molting and *** 20E treatment also induced the considerable accumulation of two second messengers,inositol triphosphate and *** expression levels of genes encoding vitellogenin(AlVg)and soluble trehalase(AlTre-1)were similar to those of AlPLCy,and were upregulated in response to *** silencing of AlPLCγ resulted in downregulated expression o f AITre-γ ***,the silencing of AlTre-1 and AlVg did not affect AlPLCγ ***,the silencing of AlVg did not alter AlTre-1 ***,an examination of the insect specimens indicated that AlPLCy is required for female adult reproduction,and that downregulated expression of this gene is associated with decreases in fecundity,adult longevity,and egg hatching rate as well as delayed oocyte *** propose that 20E regulates AlTre-1 expression via AlPLCy and affects Vg expression as well as ovary development to facilitate the reproductive activities of *** females.

关键词： Apolygus luconmn phospholipase C reproduction soluble trehalase 20-hydroxyecdysone vitellogenin

Construction of eukaryotic plasmid expressing human TGFBI and its influence on human corneal epithelial cells

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International Journal of Ophthalmology(English edition) 2012年第1期5卷 38-44页

作者： jing-yi Niu, jing-Xiang Zhong Department of Ophthalmology the First Affiliated Hospital of Jinan University Guangzhou 510630 Guangdong Province China Institution of Ophthalmology the Medical College of Jinan University Guangzhou 510632 Guangdong Province China

AIM: To detect the expression of transforming growth factor beta-induced gene (TGFBI) protein in human corneal tissue and overexpress it in the human corneal epithelial cells in order to discuss the function of TGFBI in the pathogenesis of corneal dystrophy. METHODS: Immunohistochemistry (IHC) was used to detect the expression of TGFBI in the human cornea tissue. TGFBI cDNA was obtained by reverse transcription-PCR from human corneal total RNA extracted from cornea transplant donor and cloned into pCMV-N-HA vector. The recombinant pCMV-N-HA-TGFBI plasmid transfected human corneal epithelial cells. Forty-eight hours later, mRNA and proteins were harvested from cells for real-time PCR analysis and western blot assay respectively. RESULTS: IHC indicated TGFBI mainly exist below the human corneal epithelium layer. Transfection of recombinant pCMV-N-HA-TGFBI into human corneal epithelial cells resulted in effective expression of TGFBI, as shown by increased mRNA level detected by real-time KR as well as increased protein level detected by Western blot. Meanwhile the result of real-time KR and Western blot shown the expression of MMP1,MMP3(matrix rnetalloproteinases MMP) increased while the expressin of TIMP1 (tissue inhibitors of matrix metalloproteinases TIMP) decreased. CONCLUSION: TGFBI mainly exists below the corneal epithelial layer, recombinant eukaryotic expression vector harboring human TGFBI cDNA was obtained and efficiently overexpressed in human corneal epithelial cells. Meanwhile the TGFBI overexpression in human corneal epithelial cells result in MMPI., MMP3 increasing and TIMP1 decreasing. The result might be helpful for studying the function and role of TGFBI in pathogenesis of corneal dystrophy.

关键词： TGFBI human corneal epithelial cells matrix metalloproteinases

Novel sutureless transplantation for primary pterygium associated with cysts

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International Journal of Ophthalmology(English edition) 2011年第3期4卷 280-283页

作者： yi Shao, jing-Lin yi Department of Ophthalmology the First Affiliated Hospital of Nanchang University Nanchang 330006 Jiangxi Province China Department of Science education the First Affiliated Hospital of Nanchang University Nanchang 330006 Jiangxi Province China Department of Endocrinology the Third Hospital of Nanchang the Affiliated Nanchang Hospital of Southern Medical University Nanchang 330009 Jiangxi Province China Laboratory of Neurobiology University of California·Irvine Irvine California 92697 USA

AIM: To evaluate the efficacy and safety of a novel sutureless AMT (amniotic membrane transplantation) or CAT (conjunctivolimbal autograft transplantation) using fibrin glue for reconstructing corneoconjunctival surfaces for primary pterygium associated with cysts. METHODS: A prospective descriptive study was made of the period 1 January 2006-1 May 2009. Nine patients with primary pterygium associated with cysts underwent pterygium and cyst excision followed by sutureless AMT or CAT using fibrin glue. RESULTS: During a mean follow-up of 8.00 +/- 0.67 months, all eyes maintained a smooth and stable corneal epithelial surface without recurrent erosion or persistent epithelial defect. The limbal donor site showed the presence of mild depressions without the formation of pseudopterygium. All eyes have good tear secretion function, tear film stability and ocular motility. CONCLUSION: Sutureless transplantation using fibrin glue is safe and effective for restoring a stable corneoconjunctival epithelium in primary pterygium associated with cysts.

关键词： sutureless pterygium cyst AMT CAT

Photoinduced Charge Transfer Processes of Zinc Porphyrin Derivatives for Dye-sensitized Solar Cells

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Chemical Research in Chinese Universities 2013年第5期29卷 974-981页

作者： ZHAO yi-dan FU jing-jing LI Hai-bin DONG Hao LIAO yi Department of Chemistry Capital Normal University Beijing 100048 P. R. China Institute of Chemistry for Functionalized Material College of Chemistry and Chemical Engineering Liaoning Normal University Dalian 116029 P. R. China

We studied the excitation energies of zinc porphyrin（ZnP） and zinc porphyrin analogues（ZnP-R） with long-range corrected（LC） density functional theory. We compared three recent LC functionals, wB97XD, CAM-B3LYP, LC-wPBE and functionals B3LYP with the experiments. It was lbund that the low energy excitation is well predicted for ZnP with the LC-wPBE functional based on 6-31G（d） basis set. Excited-state geometry optimiza- tions lbr all the compounds were carried out. It was shown that upon the photo-excitation nearly 1 e transferred to the acceptor unit[dodecafluorosubphthalocyanine, SubPc（F）12] and a highly polarized state formed in compound 5. But after the relaxation of the first excited state, the electron on the acceptor went back to the ZnP a little and then shifted from ZnP to the donor segment[bis（4-hexylphenyl）amino] partially. The computed excited-state radiative lifetime（r） for compound 5 is 943 μs, which shows a reasonable agreement with the experimental observation. According to the long-lived exciton in strong push-pull compound 5, we proposed that electron injection to semiconductor might occur alter vibrational relaxation of excited state.

关键词： Excitation energy Long-range corrected(LC) functional Zinc porphyrin Zinc porphyrin analogue Elec-tron injection

Three-dimensional Numerical Simulation of Viscoelastic Phase Separation under Shear: the Roles of Bulk and Shear Relaxation Moduli

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Chinese Journal of Polymer Science 2015年第11期33卷 1562-1573页

作者： jing-yi Chen Zhong Jin 杨科大 School of Materials Science and Engineering Beihang University Supercomputing Center Computer Network Information Center Chinese Academy of Sciences

The morphological, dynamic and rheological characteristics in the viscoelastic phase separation（VPS） of sheared polymer solutions are investigated by three-dimensional（3D） numerical simulations of viscoelastic model. The simulations are accelerated by graphic process unit（GPU） to break through the limitation of computation power. Firstly, the morphological and dynamic characteristics of VPS under shear are presented by comparing with those in classic phase separation（CPS）. The results show that the phase inversion and phase shrink take place in VPS under shear. Then, the roles of bulk and shear relaxation moduli in VPS are investigated in details. The bulk relaxation modulus slows down the phase separation process under shear, but not affects the dynamic path of VPS. The dynamic path can be divided into three stages： freezing stage, growth stage and stable stage. The second overshoot phenomenon in the shear stress is observed, and explained by the breakdown and reform of string structures. The shear modulus affects morphology evolution in the late stage of VPS under shear.

关键词： Viscoelastic model Phase separation Polymer solution Shear

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Synthesis and Properties of An Aminated hypocrellin B

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Chinese Chemical Letters 2001年第2期12卷 117-118页

作者： yi Jin tanG jing yi AN Institute of photographic chemistry Academi SinicaBeijing 100101

A new aminated-perylenequinone derivative 2 was synthesized by the reaction of 1 (hypocrellin B) with 6-aminohexanoic-acid. The structure of 2 was identified by UV-Vis, MS, IR and H-1-NMR. Thc amphiphility spectrum an... 详细信息

关键词： Hypocrellins amination amphiphility photochemical properties

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An Alternative Algorithm for the Symmetry Classification of Ordinary Differential Equations

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Sound & Vibration 2022年第1期56卷 65-76页

作者： yi Tian jing Pang College of Data Science and Application Inner Mongolia University of TechnologyHohhot010080China Inner Mongolia Autonomous Region Engineering and Technology Research Center of Big Data Based Software Service Hohhot010080China College of Science Inner Mongolia University of TechnologyHohhot010051China Inner Mongolia Key Laboratory of Statistical Analysis Theory for Life Data and Neural Network Modeling Inner Mongolia University of TechnologyHohhot010051China

This is the first paper on symmetry classification for ordinary differential equations(ODEs)based on Wu’s *** carry out symmetry classification of two ODEs,named the generalizations of the Kummer-Schwarz equations which involving arbitrary ***,Lie algorithm is used to give the determining equations of symmetry for the given equations,which involving arbitrary ***,differential form Wu’s method is used to decompose determining equations into a union of a series of zero sets of differential characteristic sets,which are easy to be solved *** branch of the decomposition yields a class of symmetries and associated *** algorithm makes the classification become direct and *** Dimitrov Bozhkov,and Pammela Ramos da Conceição have used the Lie algorithm to give the symmetry classifications of the equations talked in this paper in *** this paper,we can find that the differential form Wu’s method for symmetry classification of ODEs with arbitrary function(parameter)is effective,and is an alternative method.

关键词： Kummer-Schwarz equation ordinary differential equations(ODEs) differential form Wu’s method