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Search Results: 1 - 10 of 61094 matches for " Minghui Yu "
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Numerical Solutions of Stochastic Differential Delay Equations with Poisson Random Measure under the Generalized Khasminskii-Type Conditions
Minghui Song,Hui Yu
Abstract and Applied Analysis , 2012, DOI: 10.1155/2012/127397
Abstract: The Euler method is introduced for stochastic differential delay equations (SDDEs) with Poisson random measure under the generalized Khasminskii-type conditions which cover more classes of such equations than before. The main aims of this paper are to prove the existence of global solutions to such equations and then to investigate the convergence of the Euler method in probability under the generalized Khasminskii-type conditions. Numerical example is given to indicate our results.
Numerical Solutions of Stochastic Differential Equations Driven by Poisson Random Measure with Non-Lipschitz Coefficients
Hui Yu,Minghui Song
Journal of Applied Mathematics , 2012, DOI: 10.1155/2012/675781
Abstract: The numerical methods in the current known literature require the stochastic differential equations (SDEs) driven by Poisson random measure satisfying the global Lipschitz condition and the linear growth condition. In this paper, Euler's method is introduced for SDEs driven by Poisson random measure with non-Lipschitz coefficients which cover more classes of such equations than before. The main aim is to investigate the convergence of the Euler method in probability to such equations with non-Lipschitz coefficients. Numerical example is given to demonstrate our results.
Simulation for Sludge Flocculation I: Brownian Dynamic Simulation for Perikinetic Flocculation of Charged Particle
Linshuang Liu,Guolu Yang,Minghui Yu
Mathematical Problems in Engineering , 2012, DOI: 10.1155/2012/527384
Abstract: To investigate sludge drying process, a numerical simulation based on Brownian dynamic for the floc with uncharged and charged particles was conducted. The Langevin equation is used as dynamical equation for tracking each particle in a floc. An initial condition and periodic boundary condition which well conformed to reality is used for calculating the floc growth process. Each cell consists of 1000 primary particles with diameter 0.1 ~ 4 μm. Floc growth is related to the thermal force and the electrostatic force. The electrostatic force on a particle in the simulation cell is considered as the sum of electrostatic forces from other particles in the original cell and its replicate cells. It is assumed that flocs are charged with precharged primary particles in dispersion system by ionization. By the analysis of the simulation figures, on one hand, the effects of initial particle size and sludge density on floc smashing time, floc radius of gyration, and fractal dimension were discussed. On the other hand, the effects of ionization on floc smashing time and floc structure were presented. This study has important practical value in the high-turbidity water treatment, especially for sludge drying.
Magnetically assisted fluorescence ratiometric assays for adenosine deaminase using water-soluble conjugated polymers
Fang He,MingHui Yu,Shu Wang
Chinese Science Bulletin , 2009, DOI: 10.1007/s11434-009-0195-2
Abstract: A magnetically assisted fluorescence ratiometric technique has been developed for adenosine deaminase assays with high sensitivity using water-soluble cationic conjugated polymers (CCPs). The assay contains three elements: a biotin-labeled aptamer of adenosine (biotin-aptamer), a signaling probe single-stranded DNA-tagged fluorescein at terminus (ssDNA-Fl) and a CCP. The specific binding of adenosine to biotin-aptamer makes biotin-aptamer and ssDNA-Fl unhybridized, and the ssDNA-Fl is washed out after streptavidin-coated magnetic beads are added and separated from the assay solution under magnetic field. In this case, after the addition of CCP to the magnetic beads solution, the fluorescence resonance energy transfer (FRET) from CCP to fluorescein is inefficient. Upon adding adenosine deaminase, the adenosine is converted into inosine, and the biotin-aptamer is hybridized with ssDNA-Fl to form doubled stranded DNA (biotin-dsDNA-Fl). The ssDNA-Fl is attached to the magnetic beads at the separation step, and the addition of CCP to the magnetic beads solution leads to efficient FRET from CCP to fluorescein. Thus the adenosine deaminase activity can be monitored by fluorescence spectra in view of the intensity decrease of CCP emission or the increase of fluorescein emission in aqueous solutions. The assay integrates surface-functionalized magnetic particles with significant amplification of detection signal of water-soluble cationic conjugated polymers.
Magnetically assisted fluorescence ratiometric assays for adenosine deaminase using water-soluble conjugated polymers

Fang He,MingHui Yu,Shu Wang,

科学通报(英文版) , 2009,
Abstract: A magnetically assisted fluorescence ratiometric technique has been developed for adenosine deaminase assays with high sensitivity using water-soluble cationic conjugated polymers (CCPs). The assay contains three elements: a biotin-labeled aptamer of adenosine (biotin-aptamer), a signaling probe single-stranded DNA-tagged fluorescein at terminus (ssDNA-Fl) and a CCP. The specific binding of adenosine to biotin-aptamer makes biotin-aptamer and ssDNA-Fl unhybridized, and the ssDNA-Fl is washed out after streptavidin-coated magnetic beads are added and separated from the assay solution under magnetic field. In this case, after the addition of CCP to the magnetic beads solution, the fluorescence resonance energy transfer (FRET) from CCP to fluorescein is inefficient. Upon adding adenosine deaminase, the adenosine is converted into inosine, and the biotin-aptamer is hybridized with ssDNA-Fl to form doubled stranded DNA (biotin-dsDNA-Fl). The ssDNA-Fl is attached to the magnetic beads at the separation step, and the addition of CCP to the magnetic beads solution leads to efficient FRET from CCP to fluorescein. Thus the adenosine deaminase activity can be monitored by fluorescence spectra in view of the intensity decrease of CCP emission or the increase of fluorescein emission in aqueous solutions. The assay integrates surface-functionalized magnetic particles with significant amplification of detection signal of water-soluble cationic conjugated polymers. Supported by the “100 Talents” Program of the Chinese Academy of Sciences, and the National Natural Science Foundation of China (Grant No. 20574073)
ivljenje v spreminjajo i se kitajski urbani pokrajini: tudija mesta Dalian
Juyong Zhang,Nico Kotze,Minghui Yu
Urbani Izziv , 2012,
Abstract: Dalian je drugo najpomembnej e mesto na jugu province Liaoning na severovzhodu Kitajske. Neko je tam stalo naselje Qingniwa, ki so ga med letoma 1858 in 1950 drug za drugim zasedli Britanci, Japonci in Rusi. Vsak osvajalec je v mestu uvedel svoj arhitekturni slog. Rusi so mesto med drugo svetovno vojno odvzeli Japoncem, leta 1950 pa so ga kon no vrnili Kitajski. Po letu 1950 je bila ve ina stavb in obmo ij iz asa ruskega imperija poru ena zaradi prenove, ki je potekala v mestu. Najve je spremembe so se zgodile po letu 1984, ko so mesto razglasili za posebno gospodarsko obmo je, zlasti pa v 90. letih 20. stoletja, ko je postal upan Bo Xilai, ki je v mestu uredil parke, avtoceste in kro i a. Tradicionalno grajeno okolje je skoraj izginilo; danes je to sodobno mesto, v katerem se gradijo obse na stanovanjska naselja. V njem prevladujejo stanovanjske stolpnice, v katerih ivi 5,72 milijona prebivalcev. Leta 2011 je bila med 400 prebivalci opravljena anketa, v kateri so morali ti izraziti svoje mnenje o ivljenju v Dalianu in na njegovem ureditvenem obmo ju ter oceniti svoje ivljenjske pogoje in stopnjo zadovoljstva s stanovanji. Rezultati ankete so jasno razkrili negotovost ve ine anketirancev glede spremenljivk, povezanih s kakovostjo stanovanj ter z naravo, s kakovostjo in z dostopnostjo razpolo ljivih storitev. Kljub temu je najve anketirancev navedlo, da imajo javni promet, odprte prostore, parke in rekreativne povr ine na voljo blizu doma.
Living in a changing Chinese urban landscape: The Dalian case study
Juyong Zhang,Nico Kotze,Minghui Yu
Urbani Izziv , 2012,
Abstract: Dalian is the second–most important city in the southern part of Liaoning Province in northeast China. The city can trace its history back to the Qingniwa settlement. This settlement was occupied from 1858 until 1950 in succession by the British, Japanese and Russian Empires, with each imposing its own building styles on the city. However, from 1950, when the city was finally returned to China by the Russians, who had captured it from the Japanese during the Second World War, most of the imperial buildings and sites were lost to redevelopment within the city. The most dramatic changes have taken place since 1984, when the city was declared a Special Economic Zone, and particularly during the 1990s, when Bo Xilai became the mayor and introduced parks, extensive motorways and many traffic circles. At present, having lost most of its traditional built environment, Dalian is a modern city marked by dramatic housing developments and dominated by multi-family high-rise buildings to accommodate its population of 5.72 million. In 2011, a survey was conducted among 400 inhabitants of the city to ascertain their perceptions concerning life in Dalian and the Dalian Development Zone, their living conditions and their level of satisfaction with their housing. From the survey, it was clear that the majority of the interviewees were uncertain about the variables concerning the structural quality of their housing units and the nature, quality and accessibility of the services provided. However, most of them indicated that public transport, open spaces, parks and recreational facilities were within easy reach of their housing units.
The Research of Urban Rail Transit Sectional Passenger Flow Prediction Method  [PDF]
Qian Li, Yong Qin, Ziyang Wang, Minghui Zhan, Yu Liu, Zhongxin Zhao, Zhiguo Li
Journal of Intelligent Learning Systems and Applications (JILSA) , 2013, DOI: 10.4236/jilsa.2013.54026
Abstract: This paper studies the short-term prediction methods of sectional passenger flow, and selects BP neural network combined with the characteristics of sectional passenger flow itself. With a case study, we design three different schemes. We use Matlab to realize the prediction of the sectional passenger flow of the Beijing subway Line 2 and make comparative analysis. The empirical research shows that combining data characteristics of sectional passenger flow with the BP neural network have good prediction accuracy.
Effects of Tumor Necrosis Factor-β (TNF-β) 252A>G Polymorphism on the Development of Migraine: A Meta-Analysis
Ruozhuo Liu, Minghui Ma, Mingyu Cui, Zhao Dong, Xiaolin Wang, Wei Zhang, Minghui Yang, Shengyuan Yu
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0100189
Abstract: Background and Objective Genetic factors including TNF-β have been considered as important components in the aetiology of migraine. Many studies have investigated the association between TNF-β 252A>G polymorphism and migraine risk, with debatable results. This study was designed to examine whether the TNF-β 252A>G polymorphism confers genetic susceptibility to migraine in diverse populations. Method Studies eligible for this meta-analysis were searched in the PubMed, Embase, and CNKI by using the keywords “tumor necrosis factor”, “TNF”, “252A>G”, “rs909253”, “polymorphism”, “polymorphisms”, “variant”, “SNP”, combined with “migraine” or “migraine with aura (MA)” or “migraine without aura (MO)”. Pooled ORs and 95% CI were appropriately calculated using the fixed-effect model. Results We finally included a total of seven studies, providing 5 557 migraineurs and 20 543 unrelated healthy controls. Meta-analysis results showed no statistical evidence of a significant association between TNF-β 252A>G polymorphism and overall migraine risk. Stratified analyses by type of migraine and gender revealed similar results. Interestingly, an OR with 95% CI representing an increased migraine risk was indicated in Asians under the recessive model (GG vs. AG + AA: OR, 1.38; 95%CI, 1.04–1.84; P for heterogeneity, 0.665). Conclusions Our findings appear to support the hypothesis that genetic variability of 252A>G polymorphism in TNF region may modulate risk of migraine in the population of Asian ancestry.
Research on the Comprehensive Evaluation of Information System Based on Preference DEA Model
基于偏好序DEA的信息系统综合评价研究

Yu Xiuyan Li Minghui,
于秀艳
,李明惠

现代图书情报技术 , 2005,
Abstract: The preference DEA model is put forward based on the traditional DEA model to solve the comprehensive evaluation, and to solve the same efficient DMU with the average cross - efficiency. The preference DEA model is applied to the evaluation of information system. The result shows that the preference DEA model reflects the preference and offers lots of information for decision - makers.
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